Patent Description:
At present, in the manufacturing process of batteries, in order to improve the performance of the batteries, it is necessary to perform formation processing on the batteries. During formation processing on the batteries, gas will be generated inside the batteries, and the residual gas inside the batteries will seriously affect the performance of the batteries. Therefore, it is necessary to extract the gas inside the batteries during formation processing on the batteries.

In the actual manufacturing process, it is usually necessary to simultaneously extract gas from a plurality of batteries. Before the gas extracting operation, it is necessary to conduct a flow test on each gas extracting channel of a formation mechanism. However, due to the poor test accuracy of a traditional flow test method, it is difficult to accurately determine whether the gas extracting channel is blocked. When one or more gas extracting channels are blocked, it may lead to residual gas inside some batteries after completing the gas extracting operation, which is not conducive to improving the yield of the batteries. <CIT> discloses a testing tool which comprises a shell, at least one suction cup, a flow sensor and a signal acquisition module. An accommodating cavity is formed in the shell. The suction cups are arranged on the shell, and each suction cup is communicated with the corresponding pipeline; the number of the flow sensors is the same as that of the pipelines, the flow sensors are in one-to-one correspondence with the pipelines, and the flow sensors are used for obtaining the flow of the corresponding pipelines.

Embodiments of the present application aim to provide a flow test tool, a negative pressure formation apparatus, and a battery manufacturing device to solve the technical problem of poor test accuracy of flow test methods in related technologies when conducting flow tests on a plurality of channels. The present invention is defined by the flow test tool of independent claim <NUM>, the negative pressure formation apparatus of claim <NUM> and the battery manufacturing device of claim <NUM>. In the following, in case parts of the description and drawing referring to embodiments, which are not covered by the claims are not presented as embodiments of the invention, but as examples useful for understanding the invention.

The technical solutions used in the embodiments of the present application are as follows:
According to the first aspect, an embodiment of the present application provides a flow test tool. The flow test tool includes a base and a flow test module mounted on the base, the flow test module is provided with a plurality of test interfaces, and each test interface is connected to a fluid channel of a mechanism to be tested one by one.

The flow test tool provided in the embodiment of the present application at least has the following beneficial effects: the flow test module of the flow test tool provided in the embodiment of the present application is provided with a plurality of test interfaces, and the test interface is connected to the fluid channel of the mechanism to be tested one by one, so that the flow test tool can conduct flow tests on each fluid channel of the mechanism to be tested at the same time. In the test process, the flow resistance of the fluid in each fluid channel is roughly the same to ensure that flow tests can be conducted on each fluid channel of the mechanism to be tested at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel of the mechanism to be tested by the flow test tool.

According to the present invention, the flow test tool further includes adapter assemblies, each adapter assembly includes an adapter mounted on the base, the adapter is provided with a plurality of adapter channels, one open end of the adapter channel is connected to the test interface one by one, and the other open end of the adapter channel is connected to the fluid channel one by one.

By adopting the above technical solution, the test interface is connected to the adapter channel one by one, and then, the adapter channel is connected to the fluid channel one by one. Since the position of each adapter channel is relatively fixed, the test interface can be accurately and quickly connected to the fluid channel, so as to effectively improve the convenience of use of the flow test tool.

In some embodiments of the present application, the flow test tool further includes a plurality of connecting pipes, the adapter is provided with a first sleeve at the open end of the adapter channel close to the test interface, the flow test module is provided with a second sleeve at the test interface, one end of the connecting pipe is sleeved with the first sleeve, and the other end of the connecting pipe is sleeved with the second sleeve.

By adopting the above technical solution, it is convenient to realize the connection between the adapter and the flow test module.

In some embodiments of the present application, the adapter assembly further includes a plurality of sealing members, one end of the sealing member is in sealed connection with the open end of the adapter channel close to the fluid channel one by one, and the other end of the sealing member is in sealed connection with the open end of the fluid channel close to the adapter one by one.

By adopting the above technical solution, the gas tightness of connection between the adapter channel and the fluid channel is effectively improved, and the condition of fluid leakage in the communication area between the adapter channel and the fluid channel is effectively avoided, thereby further improving the accuracy of flow tests on each fluid channel of the mechanism to be tested by the flow test tool.

In some embodiments of the present application, the adapter is provided with a third sleeve at the open end of the adapter channel close to the fluid channel, and the sealing member has an annular structure and is sleeved with the third sleeve.

By adopting the above technical solution, it is convenient to realize the sealed connection between the sealing member and the adapter.

In some embodiments of the present application, the adapter is provided with a first annular groove at the outer peripheral edge of the open end of the adapter channel close to the fluid channel, and the sealing member has an annular structure and is inserted into the first annular groove.

In some embodiments of the present application, the sealing member abuts against the outer peripheral edge of the open end of the fluid channel close to the adapter.

By adopting the above technical solution, it is convenient to realize the sealed connection between the sealing member and the fluid channel of the mechanism to be tested.

According to the present invention, the base includes a first seat body and a first sliding rail arranged on the first seat body, the flow test module is mounted on the first seat body, and the adapter is slidably mounted on the first sliding rail.

By adopting the above technical solution, the position of the adapter can be adjusted according to the position of each fluid channel of the mechanism to be tested along the extension direction of the first sliding rail, and then, the flow test tool can be adapted to more types of mechanisms to be tested, thereby effectively improving the universality of the flow test tool.

According to the present invention, the base further includes a second sliding rail arranged on the first seat body, the flow test module is slidably mounted on the second sliding rail, and the second sliding rail and the first sliding rail are arranged in parallel.

By adopting the above technical solution, in the process of adjusting the position of the adapter, the flow test module can move synchronously with the adapter to ensure that the relative position between the flow test module and the adapter remains unchanged, so as to avoid the condition of failure of the connection between the test interface and the adapter channel caused by applying a larger pull force to the connecting portion between the test interface and the adapter channel, thereby effectively improving the use reliability of the flow test tool.

In some embodiments of the present application, the base further includes support rods, and the support rods are connected between the first seat body and the first sliding rail.

By adopting the above technical solution, the height of the flow test tool can be effectively increased, and then, the flow test tool can adapt to the driving strokes of driving mechanisms such as a lifting mechanism, so that a driving mechanism can be used to drive the flow test tool to move towards the direction of the mechanism to be tested to achieve the connection between the test interface and the fluid channel of the mechanism to be tested.

In some embodiments of the present application, the support rod is a telescopic rod.

By adopting the above technical solution, the height of the flow test tool can be adjusted according to the driving strokes of different driving mechanisms, and then, the flow test tool can work in cooperation with more types of driving mechanisms, thereby effectively improving the universality of the flow test tool.

In some embodiments of the present application, the flow test tool further includes a controller electrically connected to a host computer, and the flow test module is electrically connected to the controller.

By adopting the above technical solution, the flow data measured by the flow test module can be transmitted to the host computer in real time through the controller, so as to collect test data.

According to the second aspect, an embodiment of the present application provides a negative pressure formation apparatus. The negative pressure formation apparatus includes a formation mechanism and a flow test tool according to any one of the above embodiments, the formation mechanism is provided with a plurality of fluid channels, and the test interface is connected to the fluid channel one by one.

The negative pressure formation apparatus provided in the embodiment of the present application at least has the following beneficial effects: since the negative pressure formation apparatus provided in the embodiment of the present application uses the flow test tool according to any one of the above embodiments, before formation processing on batteries, the flow test tool can be used to conduct flow tests on each fluid channel of the formation mechanism. During the flow test, the flow resistance of the gas in each fluid channel is roughly the same to ensure that flow tests can be conducted on each fluid channel of the formation mechanism at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel of the formation mechanism by the flow test tool.

In some embodiments of the present application, the negative pressure formation apparatus further includes a lifting mechanism, and the lifting mechanism is configured to drive the flow test tool to move towards the direction close to the formation mechanism, so as to enable the test interface to be connected to the fluid channel one by one.

By adopting the above technical solution, the automatic connection between the test interface of the flow test tool and the fluid channel of the formation mechanism can be realized, the manpower is saved, and the convenience of use of the negative pressure formation apparatus is effectively improved.

In some embodiments of the present application, the lifting mechanism includes a lifting seat and a driver, the base is arranged on the lifting seat, and the driver is configured to drive the lifting seat to move towards the direction close to the formation mechanism, so as to enable the test interface to be connected to the fluid channel one by one.

In some embodiments of the present application, the lifting seat is provided with a first conductive element electrically connected to a power source, the base is provided with a second conductive element electrically connected to the flow test module, and the second conductive element is capable of abutting against the first conductive element after the base is placed on the lifting seat.

By adopting the above technical solution, after the base is placed on the lifting seat, the first conductive element abuts against the second conductive element, that is, the flow test tool can be electrified without the additional electrifying operation on the flow test tool, thereby further improving the convenience of use of the negative pressure formation apparatus.

In some embodiments of the present application, the first conductive element and/or the second conductive element are conductive leaf springs.

By adopting the above technical solution, it is effectively ensured that the first conductive element can be in close contact with the second conductive element.

In some embodiments of the present application, the lifting seat includes a second seat body and a positioning seat mounted on the second seat body, the second seat body is connected to the power output end of the driver, and the base is arranged on the positioning seat.

By adopting the above technical solution, the position of the flow test tool is effectively limited to prevent the displacement of the flow test tool during the movement of the flow test tool driven by the lifting mechanism, thereby ensuring that the flow test tool can be accurately connected to the formation mechanism.

In some embodiments of the present application, the base is provided with positioning holes, and the positioning seat is provided with positioning parts; or, the base is provided with positioning parts, and the positioning seat is provided with positioning holes; and the positioning parts are inserted into the positioning holes.

By adopting the above technical solution, under the cooperation between the positioning parts and the positioning holes, the position of the flow test tool is effectively limited to prevent the displacement of the flow test tool during the movement of the flow test tool driven by the lifting mechanism, thereby ensuring that the flow test tool can be accurately connected to the formation mechanism.

According to the third aspect, an embodiment of the present application provides a battery manufacturing device. The battery manufacturing device includes a negative pressure formation apparatus according to any one of the above embodiments.

The battery manufacturing device provided in the embodiment of the present application at least has the following beneficial effects: since the present application uses the negative pressure formation apparatus according to any one of the above embodiments, before formation processing on batteries, the flow test tool can be used to conduct flow tests on each fluid channel of the formation mechanism. During the flow test, the flow resistance of the gas in each fluid channel is roughly the same to ensure that flow tests can be conducted on each fluid channel of the formation mechanism at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel of the formation mechanism by the flow test tool.

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for description in the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present application. Those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Here, the reference numerals in the drawings are as follows:.

In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application clearer, the present application will be described in further detail below in conjunction with the drawings and embodiments. It should be understood that specific embodiments described herein are intended only to explain the present application, but not to limit the present application.

It should be noted that when an element is considered to be "fixed" or "arranged" on another element, the element may be directly or indirectly located on another element. When an element is considered to be "connected to" another element, the element may be directly or indirectly connected to another element.

It is to be understood that, the orientation or position relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are based on the orientation or position relationships shown in the drawings and are only for facilitating the description of the present application and simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore will not be interpreted as limiting the present application.

In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined by "first", "second", "third" or "fourth" may expressly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically defined.

In the manufacturing process of batteries, it is necessary to perform formation processing on the batteries. The formation processing refers to the process of charging the batteries for the first time to activate the batteries. During formation processing on the batteries, gas will be generated inside the batteries, and the residual gas inside the batteries may easily cause expansion and deformation of the batteries, resulting in adverse effects on the performance of the batteries. Therefore, it is necessary to extract the gas inside the batteries during formation processing on the batteries.

At present, in order to improve the production efficiency, it is usually necessary to perform formation processing on a plurality of batteries at the same time and extract gas from the plurality of batteries at the same time. Therefore, it is necessary to arrange a plurality of fluid channels for gases to flow through on the formation mechanism, and the fluid channels are communicated with the insides of the batteries one by one so as to extract the gas inside each battery. In order to ensure the same gas extracting speed for each battery, it is necessary to ensure that the gas flow in each fluid channel is the same. Therefore, before the gas extracting operation on the batteries, it is necessary to test the flow value of each fluid channel.

The flow test mode used currently is to insert a flow meter into any fluid channel and then start a gas extracting mechanism to form a negative pressure in each fluid channel, so as to measure the flow value of the fluid channel in which the flow meter is inserted, and then, the same mode is used to test the flow values of other fluid channels. However, since the flow resistance of the fluid channel in which the flow meter is inserted is greater than the fluid resistance of other fluid channels, after the gas extracting mechanism is started, the volume of the gas flowing into the fluid channel in which the flow meter is inserted will be less than the volume of the gas flowing into other fluid channels. As a result, the flow value of the fluid channel measured by the flow meter is less than the actual flow value of the fluid channel, so that the flow value of each fluid channel cannot be accurately measured, and whether the gas extracting channel is blocked cannot be accurately determined. When one or more gas extracting channels are blocked, it may lead to residual gas inside some batteries after completing the gas extracting operation, which is not conducive to improving the yield of the batteries.

In order to improve the accuracy of flow tests on each fluid channel, an embodiment of the present application provides a flow test tool. A flow test module of the flow test tool is provided with a plurality of test interfaces, and the test interface is connected to a fluid channel of a mechanism to be tested one by one, so that the flow test tool can conduct flow tests on each fluid channel of the mechanism to be tested at the same time. In the test process, the flow resistance of the gas in each fluid channel is roughly the same to ensure that flow tests can be conducted on each fluid channel of the mechanism to be tested at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel of the mechanism to be tested by the flow test tool.

According to the first aspect, an embodiment of the present application provides a flow test tool <NUM>. The flow test tool <NUM> can be used for a negative pressure formation apparatus, a negative pressure feeding apparatus, a water supply apparatus, an infusion apparatus and the like, and is configured to conduct flow tests on the fluid channels of the above apparatus, wherein fluids may be gases or liquids.

The flow test tool <NUM> provided in the embodiment of the present application is described below by taking the flow test tool <NUM> provided in the embodiment of the present application, which is used for a negative pressure formation apparatus, as an example with reference to the drawings.

Referring to <FIG>, the flow test tool <NUM> includes a base <NUM> and flow test modules <NUM>. The flow test modules <NUM> are mounted on the base <NUM>, the flow test module <NUM> is provided with a plurality of test interfaces, and the test interface is connected to a fluid channel <NUM> of a mechanism to be tested one by one.

The base <NUM> refers to a component for providing mounting space for the flow test module <NUM> and other components of the flow test tool <NUM>. The base <NUM> may be an integrally formed structural member, and the structural member may be in the form of a platy structure, a columnar structure, or the like, which is not specifically limited herein. Of course, in other embodiments, the base <NUM> may also be an assembly formed by assembling a plurality of components. The base <NUM> is made of a rigid material, and the rigid material includes, but is not limited to, aluminum, copper, iron, steel, plastic, or the like, which is not specifically limited herein.

The flow test module <NUM> refers to a component for obtaining the flow value of the fluid channel <NUM>. The test interface of the flow test module <NUM> may be a gas outlet of the flow test module <NUM>, that is, the gas flows out of the flow test module <NUM> through the test interface. The test interface of the flow test module <NUM> may also be a gas inlet of the flow test module <NUM>, that is, the gas flows into the flow test module <NUM> through the test interface.

The following takes an example in which the test interface of the flow test module <NUM> is a gas outlet of the flow test module <NUM> for description.

The flow test module <NUM> is further provided with a suction port <NUM> communicated with the test interface, and the gas enters the flow test module <NUM> from the suction port <NUM> and then flows out of a flow meter <NUM> through the test interface. The flow test module <NUM> may be a separate component or an integrated component. When the flow test module <NUM> is a separate component, the flow test module <NUM> may include a plurality of flow meters <NUM>. The flow meter <NUM> is provided with a test interface and a suction port <NUM>. During a flow test, the gas enters the flow meter <NUM> from the suction port <NUM> and then flows out of the flow meter <NUM> through the test interface, so as to obtain the flow value of the gas flow. When the flow test module <NUM> is an integrated component, the flow test module <NUM> may be provided with a plurality of test interfaces, a plurality of suction ports <NUM> and a plurality of test channels. The suction port <NUM>, the test interface and the test channel are communicated one by one. During a flow test, the gas enters the test channel from the suction port <NUM> and then flows out of the flow meter <NUM> through the test interface, so as to obtain the flow value of the gas flow.

For the convenience of description, the X direction shown in <FIG> is the length direction of the flow test tool <NUM>, the Y direction shown in <FIG> is the width direction of the flow test tool <NUM>, and the Z direction shown in <FIG> is the height direction of the flow test tool <NUM>.

The distribution structure of each test interface of the flow test module <NUM> may be determined according to the distribution structure of the port of each fluid channel <NUM> of the mechanism to be tested. For example, each test interface of the flow test module <NUM> may be sequentially distributed along the length direction of the flow test tool <NUM>. For another example, each test interface of the flow test module <NUM> may be sequentially distributed along the width direction of the flow test tool <NUM>. One or a plurality of flow test modules <NUM> may be provided, for example, two or three flow test modules <NUM> may be provided. When a plurality of flow test modules <NUM> are provided, the distribution structure of each flow test module <NUM> may be determined according to the distribution structure of the port of each fluid channel <NUM> of the mechanism to be tested. For example, a plurality of flow test modules <NUM> may be sequentially distributed along the length direction of the flow test tool <NUM>. For another example, a plurality of flow test modules <NUM> may be sequentially distributed along the width direction of the flow test tool <NUM>.

In this embodiment, a plurality of flow test modules <NUM> are provided, the plurality of flow test modules <NUM> are sequentially distributed along the width direction of the flow test tool <NUM>, and each test interface of the flow test module <NUM> is sequentially distributed along the length direction of the flow test tool <NUM>.

The one-to-one connection between the test interface and the fluid channel <NUM> of the mechanism to be tested refers to the one-to-one correspondence and intercommunication between each test interface and each fluid channel <NUM>. The gas can enter the corresponding fluid channel <NUM> through the test interface.

The flow test module <NUM> of the flow test tool <NUM> provided in the embodiment of the present application is provided with a plurality of test interfaces, and the test interface is connected to the fluid channel <NUM> of the mechanism to be tested one by one, so that the flow test tool <NUM> can conduct flow tests on each fluid channel <NUM> of the mechanism to be tested at the same time. In the test process, the flow resistance of the fluid in each fluid channel <NUM> is roughly the same to ensure that flow tests can be conducted on each fluid channel <NUM> of the mechanism to be tested at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel <NUM> of the mechanism to be tested by the flow test tool <NUM>.

According to the present invention, referring to <FIG> and <FIG> to <FIG>, the flow test tool <NUM> further includes adapter assemblies <NUM>, the adapter assembly <NUM> includes an adapter <NUM>, the adapter <NUM> is mounted on the base <NUM> and is provided with a plurality of adapter channels <NUM>, one open end of the adapter channel <NUM> is connected to the test interface one by one, and the other open end of the adapter channel <NUM> is connected to the fluid channel <NUM> one by one.

The adapter <NUM> refers to a component arranged between the test interface and the fluid channel <NUM> and used as a communication medium between the test interface and the fluid channel <NUM>. The adapter <NUM> has various structures, such as a platy structure and a rod-shaped structure, which are not specifically limited herein. The adapter <NUM> may be made of a rigid material, and the rigid material includes, but is not limited to, aluminum, copper, iron, steel, plastic, or the like, which is not specifically limited herein.

For the convenience of description, the X direction shown in <FIG> is the length direction of the adapter <NUM>, the Y direction shown in <FIG> is the width direction of the adapter <NUM>, and the Z direction shown in <FIG> is the thickness direction of the adapter <NUM>.

The adapter channel <NUM> is a transfer channel for communicating the test interface with the fluid channel <NUM>. Each adapter channel <NUM> is sequentially distributed along the length direction of the adapter <NUM>. The adapter channel <NUM> penetrates through the adapter <NUM> to form two open ends. Optionally, the adapter channel <NUM> may penetrate through the adapter <NUM> along the thickness direction of the adapter <NUM>, that is, two open ends of the adapter channel <NUM> are respectively arranged on two opposite sides of the adapter <NUM> along the thickness direction of the adapter <NUM>; or the adapter channel <NUM> may also penetrate through the adapter <NUM> along the width direction of the adapter <NUM>, that is, two open ends of the adapter channel <NUM> are respectively arranged on two opposite sides of the adapter <NUM> along the width direction of the adapter <NUM>. When the adapter channel <NUM> penetrates through the adapter <NUM> along the thickness direction of the adapter <NUM>, in order to facilitate the connection of the test interface and the fluid channel <NUM> with the adapter channel <NUM> respectively, the flow test module <NUM> and the mechanism to be tested are respectively arranged on two opposite sides of the adapter <NUM> along the thickness direction of the adapter <NUM>. When the adapter channel <NUM> penetrates through the adapter <NUM> along the width direction of the adapter <NUM>, in order to facilitate the connection of the test interface and the fluid channel <NUM> with the adapter channel <NUM> respectively, the flow test module <NUM> and the mechanism to be tested are respectively arranged on two opposite sides of the adapter <NUM> along the width direction of the adapter <NUM>.

The one-to-one connection between one open end of the adapter channel <NUM> and the test interface refers to the one-to-one correspondence and intercommunication between one open end of each adapter channel <NUM> and each test interface. The test interface may be directly connected to the adapter channel <NUM> to achieve intercommunication, or the test interface may also be indirectly connected to the adapter channel <NUM> to achieve intercommunication. For example, the flow test tool <NUM> further includes a plurality of connecting pipes <NUM>, one end of the connecting pipe <NUM> is connected to the test interface, and the other end of the connecting pipe <NUM> is connected to one open end of the adapter channel <NUM>, thereby achieving intercommunication between the test interface and the adapter channel <NUM>. Referring to <FIG>, <FIG>, <FIG> and <FIG>, when the test interface is connected to the adapter channel <NUM> through the connecting pipe <NUM>, the adapter <NUM> is provided with a first sleeve <NUM> at the open end of the adapter channel <NUM> close to the test interface, that is, the open end of the adapter channel <NUM> close to the test interface is located in the first sleeve <NUM>; the flow test module <NUM> is provided with a second sleeve <NUM> at the test interface, that is, the test interface is located in the second sleeve <NUM>; and one end of the connecting pipe <NUM> is sleeved with the first sleeve <NUM>, and the other end of the connecting pipe <NUM> is sleeved with the second sleeve <NUM>, thereby achieving intercommunication between the test interface and the adapter channel <NUM>.

The one-to-one connection between the other open end of the adapter channel <NUM> and the fluid channel <NUM> refers to the one-to-one correspondence and intercommunication between the other open end of each adapter channel <NUM> and each test interface. The gas can sequentially flow through the test interface, one open end of the adapter channel <NUM> and the other open end of the adapter channel <NUM> to enter the corresponding fluid channel <NUM>.

By adopting the above technical solution, the test interface is connected to the adapter channel <NUM> one by one, and then, the adapter channel <NUM> is connected to the fluid channel <NUM> one by one. Since the position of each adapter channel <NUM> is relatively fixed, the test interface can be accurately and quickly connected to the fluid channel <NUM>, so as to effectively improve the convenience of use of the flow test tool <NUM>.

In some embodiments of the present application, referring to <FIG>, the adapter assembly <NUM> further includes a plurality of sealing members <NUM>, one end of the sealing member <NUM> is in sealed connection with the open end of the adapter channel <NUM> close to the fluid channel <NUM> one by one, and the other end of the sealing member <NUM> is in sealed connection with the open end of the fluid channel <NUM> close to the adapter <NUM> one by one.

The sealing member <NUM> refers to a component for isolating the communication area between the adapter channel <NUM> and the fluid channel <NUM> from the external environment. The sealing member <NUM> has an annular structure, that is, the middle of the sealing member <NUM> is provided with a cavity for gases to flow through, and the cavity penetrates through two end surfaces of the sealing member <NUM> to form two cavity openings. The gas can enter the cavity of the sealing member <NUM> through one cavity opening of the sealing member <NUM> from the adapter channel <NUM>, and then enter the flow channel through another cavity opening of the sealing member <NUM>. The sealing member <NUM> is made of a flexible material, and the flexible material includes, but is not limited to, rubber, silicone, or the like, which is not specifically limited herein.

There are multiple modes of sealed connection between the sealing member <NUM> and the open end of the adapter channel <NUM> close to the fluid channel <NUM>. For example, referring to <FIG>, the adapter <NUM> is provided with a third sleeve <NUM> at the open end of the adapter channel <NUM> close to the fluid channel <NUM>, that is, the open end of the adapter channel <NUM> close to the fluid channel <NUM> is located in the third sleeve <NUM>, and the sealing member <NUM> is sleeved with the third sleeve <NUM>. For another example, referring to <FIG> and <FIG>, the adapter <NUM> is provided with a first annular groove <NUM> at the outer peripheral edge of the open end of the adapter channel <NUM> close to the fluid channel <NUM>, that is, the open end of the adapter channel <NUM> close to the fluid channel <NUM> is located in the inner annular space of the first annular groove <NUM>, and the sealing member <NUM> is inserted into the first annular groove <NUM>.

There are multiple modes of sealed connection between the sealing member <NUM> and the open end of the fluid channel <NUM> close to the adapter <NUM>. For example, the sealing member <NUM> abuts against the outer peripheral edge of the open end of the fluid channel <NUM> close to the adapter <NUM> to enable the sealing member <NUM> to encircle the open end of the fluid channel <NUM> close to the adapter <NUM>. For another example, the mechanism to be tested is provided with a fourth sleeve at the open end of the fluid channel <NUM> close to the adapter <NUM>, that is, the open end of the fluid channel <NUM> close to the adapter <NUM> is located in the fourth sleeve, and the sealing member <NUM> is sleeved with the fourth sleeve. For another example, the mechanism to be tested is provided with a second annular groove at the outer peripheral edge of the open end of the fluid channel <NUM> close to the adapter <NUM>, that is, the open end of the fluid channel <NUM> close to the adapter <NUM> is located in the inner annular space of the second annular groove, and the sealing member <NUM> is inserted into the second annular groove.

By adopting the above technical solution, the gas tightness of connection between the adapter channel <NUM> and the fluid channel <NUM> is effectively improved, and the condition of fluid leakage in the communication area between the adapter channel <NUM> and the fluid channel <NUM> is effectively avoided, thereby further improving the accuracy of flow tests on each fluid channel <NUM> of the mechanism to be tested by the flow test tool <NUM>.

According to the present invention, referring to <FIG>, the base <NUM> includes a first seat body <NUM> and a first sliding rail <NUM>, the first sliding rail <NUM> is arranged on the first seat body <NUM>, the flow test module <NUM> is mounted on the first seat body <NUM>, and the adapter <NUM> is slidably mounted on the first sliding rail <NUM>.

The first seat body <NUM> refers to a main support component of the base <NUM>, and the first seat body <NUM> is configured to provide mounting space for components such as the flow test module <NUM> and the first sliding rail <NUM>. The first seat body <NUM> is made of a rigid material, and the rigid material includes, but is not limited to, aluminum, copper, iron, steel, plastic, or the like, which is not specifically limited herein.

The first sliding rail <NUM> can extend along the width direction of the flow test tool <NUM>, and can also extend along the length direction of the flow test tool <NUM>. In other words, the adapter <NUM> can slide along the width direction of the flow test tool <NUM>, and can also slide along the length direction of the flow test tool <NUM>. The number of first sliding rails <NUM> can be determined according to actual design needs. For example, two or three first sliding rails <NUM> may be provided. In this embodiment, two first sliding rails <NUM> are provided, and the two first sliding rails <NUM> are respectively arranged on two opposite sides of the first seat body <NUM>. For example, when the first sliding rail <NUM> can extend along the width direction of the flow test tool <NUM>, the two first sliding rails <NUM> are respectively arranged on two opposite sides of the first seat body <NUM> along the length direction of the first seat body <NUM>, and the adapter <NUM> is slidably connected between the two first sliding rails <NUM>.

There are multiple structural forms of the first sliding rail <NUM>. In some embodiments, referring to <FIG> and <FIG>, the first sliding rail <NUM> has a platy structure, the first sliding rail <NUM> is provided with a first guide groove <NUM>, and the adapter <NUM> is slidably connected to the first guide groove <NUM>. Specifically, the adapter <NUM> may be slidably connected to the first guide groove <NUM> through a fastener such as a bolt or a screw. When the adapter <NUM> moves to a preset position along the first guide groove <NUM>, the position of the adapter <NUM> can be locked by tightening the fastener.

In other embodiments, the first sliding rail <NUM> has a strip structure, the adapter <NUM> is provided with a first sliding block, the first sliding block is provided with a first sliding groove, and the first sliding block is in sliding fit with the first sliding rail <NUM> through the first sliding groove. Specifically, the adapter <NUM> further includes a fastener which may be a bolt, a screw, or the like. The first sliding block is provided with a threaded hole, the threaded hole penetrates to the first sliding groove from the outer wall of the first sliding block, and the fastener is connected to the threaded hole. When the adapter <NUM> moves to a preset position along the first sliding rail <NUM>, the fastener can be screwed to enable the fastener to pass through the threaded hole and be pressed against the first sliding rail <NUM>, so as to lock the position of the adapter <NUM>.

By adopting the above technical solution, the position of the adapter <NUM> can be adjusted according to the position of each fluid channel <NUM> of the mechanism to be tested along the extension direction of the first sliding rail <NUM>, and then, the flow test tool <NUM> can be adapted to more types of mechanisms to be tested, thereby effectively improving the universality of the flow test tool <NUM>.

According to the present invention, the base <NUM> further includes a second sliding rail arranged on the first seat body <NUM>, the flow test module <NUM> is slidably mounted on the second sliding rail, and the second sliding rail and the first sliding rail <NUM> are arranged in parallel.

When the flow test module <NUM> includes a plurality of flow meters <NUM>, the number of second sliding rails is the same as the number of flow meters <NUM>, and the flow meter <NUM> is in sliding fit with the second sliding rail one by one. When the flow test module <NUM> is an integrated component, the number of second sliding rails can be determined according to actual design needs. For example, two second sliding rails are provided, and two opposite sides of the flow test module <NUM> are in sliding fit with the two second sliding rails one by one.

There are multiple structural forms of the second sliding rail. In some embodiments, the second sliding rail has a platy structure, the second sliding rail is provided with a second guide groove, and the flow test module <NUM> is slidably connected to the second guide groove.

In other embodiments, the second sliding rail has a strip structure, the flow test module <NUM> is provided with a second sliding block, the second sliding block is provided with a second sliding groove, and the second sliding block is in sliding fit with the second sliding rail through the second sliding groove.

By adopting the above technical solution, in the process of adjusting the position of the adapter <NUM>, the flow test module <NUM> can move synchronously with the adapter <NUM> to ensure that the relative position between the flow test module <NUM> and the adapter <NUM> remains unchanged, so as to avoid the condition of failure of the connection between the test interface and the adapter channel <NUM> caused by applying a larger pull force to the connecting portion between the test interface and the adapter channel <NUM>, thereby effectively improving the use reliability of the flow test tool <NUM>.

In some embodiments of the present application, referring to <FIG> and <FIG>, the base <NUM> further includes support rods <NUM>, and the support rods <NUM> are connected between the first seat body <NUM> and the first sliding rail <NUM>.

The support rod <NUM> is a connecting component between the first seat body <NUM> and the first sliding rail <NUM>, which plays a role in supporting the first sliding rail <NUM>. The support rod <NUM> extends along the height direction of the flow test tool <NUM>. One end of the support rod <NUM> is connected to the first seat body <NUM>. There are multiple modes of connection between the support rod <NUM> and the first seat body <NUM>, such as fastening connection, welding and bonding, which are not specifically limited herein. The other end of the support rod <NUM> is connected to the first sliding rail <NUM>. There are multiple modes of connection between the support rod <NUM> and the first sliding rail <NUM>, such as fastening connection, welding and bonding, which are not specifically limited herein. A plurality of support rods <NUM> may be provided. In order to ensure the mounting stability of the first sliding rail <NUM>, at least one support rod <NUM> is connected to both ends of the first sliding rail <NUM>. The support rod <NUM> is made of a rigid material, and the rigid material includes, but is not limited to, aluminum, copper, iron, steel, plastic, or the like, which is not specifically limited herein.

Since the flow test tool <NUM> needs to be connected to a formation mechanism <NUM>, the volume and weight of the flow test tool <NUM> are relatively large. Therefore, it is usually necessary to use a lifting mechanism <NUM> to lift the flow test tool <NUM> to achieve the connection between the flow test tool <NUM> and the formation mechanism <NUM>. By adopting the above technical solution, the height of the flow test tool <NUM> can be effectively increased, and then, the flow test tool <NUM> can adapt to the driving strokes of driving mechanisms such as the lifting mechanism <NUM>, so that a driving mechanism can be used to drive the flow test tool <NUM> to move towards the direction of the mechanism to be tested to achieve the connection between the test interface and the fluid channel <NUM> of the mechanism to be tested.

In some embodiments of the present application, the support rod <NUM> is a telescopic rod.

In other words, the support rod <NUM> can be extended or shortened along the height direction of the flow test tool <NUM>. Specifically, referring to <FIG>, <FIG> and <FIG>, the support rod <NUM> includes a first rod segment <NUM> and a second rod segment <NUM>, one end of the first rod segment <NUM> is connected to the first seat body <NUM>, one end of the second rod segment <NUM> is connected to the first sliding rail <NUM>, and the other end of the first rod segment <NUM> is telescopically connected to the other end of the second rod segment <NUM>.

There are multiple modes of telescopic connection between the first rod segment <NUM> and the second rod segment <NUM>. For example, one end of the first rod segment <NUM> close to the second rod segment <NUM> is provided with a threaded part, one end of the second rod segment <NUM> close to the first rod segment <NUM> is provided with a threaded hole, the threaded part is in threaded connection in the threaded hole, and the first rod segment <NUM> or the second rod segment <NUM> can be screwed to extend or shorten the support rod <NUM>. For another example, one end of the second rod segment <NUM> close to the first rod segment <NUM> is provided with a gas pressure cavity, one end of the first rod segment <NUM> close to the second rod segment <NUM> is in sealed connection in the gas pressure cavity, and different pressures may be applied to the first rod segment <NUM> or the second rod segment <NUM> to extend or shorten the support rod <NUM>.

By adopting the above technical solution, the height of the flow test tool <NUM> can be adjusted according to the driving strokes of different driving mechanisms, and then, the flow test tool <NUM> can work in cooperation with more types of driving mechanisms, thereby effectively improving the universality of the flow test tool <NUM>.

In some embodiments of the present application, referring to <FIG>, the flow test tool <NUM> further includes a controller <NUM> electrically connected to a host computer <NUM>, and the flow test module <NUM> is electrically connected to the controller <NUM>.

The controller <NUM> is an electronic component for receiving flow data obtained by the flow test module <NUM> and transmitting the flow data to the host computer <NUM>. The controller <NUM> may be electrically connected to the host computer <NUM> through a data cable to achieve data interaction between the controller <NUM> and the host computer <NUM>. The controller <NUM> may also conduct data interaction with the host computer <NUM> in a mode of wireless communication. For example, both the controller <NUM> and the host computer <NUM> are provided with a wireless communication module, and a wireless communication path is established between the wireless communication module of the controller <NUM> and the wireless communication module of the host computer <NUM>, so as to achieve data interaction between the controller <NUM> and the host computer <NUM>. In a similar way, the controller <NUM> may be electrically connected to the flow test module <NUM> through a data cable to achieve data interaction between the controller <NUM> and the flow test module <NUM>. The controller <NUM> may also conduct data interaction with the flow test module <NUM> in a mode of wireless communication. For example, both the controller <NUM> and the flow test module <NUM> are provided with a wireless communication module, and a wireless communication path is established between the wireless communication module of the controller <NUM> and the wireless communication module of the flow test module <NUM>, so as to achieve data interaction between the controller <NUM> and the flow test module <NUM>. The controller <NUM> includes, but is not limited to, a programmable logic controller (PLC) <NUM>, a central processing unit (CPU), or the like, which is not specifically limited herein.

By adopting the above technical solution, the flow data measured by the flow test module <NUM> can be transmitted to the host computer <NUM> in real time through the controller <NUM>, so as to collect test data.

According to the second aspect, an embodiment of the present application further provides a negative pressure formation apparatus <NUM>. Referring to <FIG>, the negative pressure formation apparatus <NUM> includes a formation mechanism <NUM> and a flow test tool <NUM> according to any one of the above embodiments. The formation mechanism <NUM> is provided with a plurality of fluid channels <NUM>, and the test interface is connected to the fluid channel <NUM> one by one.

The formation mechanism <NUM> is a mechanism for performing formation processing on a battery, wherein the fluid channel <NUM> of the formation mechanism <NUM> is connected to the inside of the battery one by one to extract the gas inside the battery. The negative pressure formation apparatus <NUM> may further include a gas extracting mechanism <NUM>, and the gas extracting end of the gas extracting mechanism <NUM> is communicated with each fluid channel <NUM> of the formation mechanism <NUM>. Specifically, the formation mechanism <NUM> is further provided with a convergence channel <NUM>, each fluid channel <NUM> is communicated with the convergence channel <NUM>, and the gas extracting end of the gas extracting mechanism <NUM> is communicated with the convergence channel <NUM>. During a flow test on the fluid channel <NUM>, the test interface of the flow test module <NUM> is connected to the fluid channel <NUM> one by one, then, the gas extracting mechanism <NUM> is started to form a negative pressure in the fluid channel <NUM>, and the gas enters the fluid channel <NUM> through the flow test module <NUM> to enable the flow test module <NUM> to obtain the flow data of each fluid channel <NUM>. The negative pressure formation apparatus <NUM> may further include a host computer <NUM>, and the host computer <NUM> is electrically connected to the controller <NUM> of the flow test tool <NUM>. The flow test module <NUM> transmits the flow data to the controller <NUM>, then, the controller <NUM> transmits the flow data to the host computer <NUM>, and the host computer <NUM> analyzes and processes the flow data to determine whether each fluid channel <NUM> is blocked according to analysis results.

Since the negative pressure formation apparatus <NUM> provided in the embodiment of the present application uses the flow test tool <NUM> according to any one of the above embodiments, before formation processing on batteries, the flow test tool <NUM> can be used to conduct flow tests on each fluid channel <NUM> of the formation mechanism <NUM>. During the flow test, the flow resistance of the gas in each fluid channel <NUM> is roughly the same to ensure that flow tests can be conducted on each fluid channel <NUM> of the formation mechanism <NUM> at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel <NUM> of the formation mechanism <NUM> by the flow test tool <NUM>.

In some embodiments of the present application, referring to <FIG>, the negative pressure formation apparatus <NUM> further includes a lifting mechanism <NUM>, and the lifting mechanism <NUM> is configured to drive the flow test tool <NUM> to move towards the direction close to the formation mechanism <NUM>, so as to enable the test interface to be connected to the fluid channel <NUM> one by one.

The lifting mechanism <NUM> is a power mechanism for driving the flow test tool <NUM> to move to enable the flow test tool <NUM> to be connected to the formation mechanism <NUM>. The driving direction of the lifting mechanism <NUM> is the height direction of the flow test tool <NUM>. In other words, the formation mechanism <NUM> is arranged on one side of the flow test tool <NUM> along the height direction of the flow test tool <NUM>, and the lifting mechanism <NUM> is arranged on the other side of the flow test tool <NUM> along the height direction of the flow test tool <NUM>.

By adopting the above technical solution, the automatic connection between the test interface of the flow test tool <NUM> and the fluid channel <NUM> of the formation mechanism <NUM> can be realized, the manpower is saved, and the convenience of use of the negative pressure formation apparatus <NUM> is effectively improved.

In some embodiments of the present application, referring to <FIG>, the lifting mechanism <NUM> includes a lifting seat <NUM> and a driver <NUM>, the base <NUM> is arranged on the lifting seat <NUM>, and the driver <NUM> is configured to drive the lifting seat <NUM> to move towards the direction close to the formation mechanism <NUM>, so as to enable the test interface to be connected to the fluid channel <NUM> one by one.

The lifting seat <NUM> is a support component for supporting the flow test tool <NUM>. The driver <NUM> is a power source of the lifting mechanism <NUM>, which is configured to provide power for the lifting seat <NUM> to move away from or close to the formation mechanism <NUM>. It can be understood that the power output end of the driver <NUM> is connected to the lifting seat <NUM>. The driver <NUM> is a linear driver, and the linear driver includes, but is not limited to, an electric pneumatic cylinder, an electric hydraulic cylinder, a gear rack driver, a ball screw driver, or the like, which is not specifically limited herein.

In some embodiments of the present application, referring to <FIG>, the lifting seat <NUM> is provided with a first conductive element <NUM> electrically connected to a power source, the base <NUM> is provided with a second conductive element <NUM> electrically connected to the flow test module <NUM>, and the second conductive element <NUM> is capable of abutting against the first conductive element <NUM> after the base <NUM> is placed on the lifting seat <NUM>.

Both the first conductive element <NUM> and the second conductive element <NUM> are made of a conductive material, and the conductive material includes, but is not limited to, copper, tin, aluminum, conductive plastic, conductive rubber, or the like, which is not specifically limited. There are multiple structural forms of the first conductive element <NUM> and the second conductive element <NUM>. For example, both the first conductive element <NUM> and the second conductive element <NUM> have a sheet structure. For another example, both the first conductive element <NUM> and the second conductive element <NUM> have a columnar structure. In this embodiment, both the first conductive element <NUM> and the second conductive element <NUM> have a sheet structure. Specifically, in order to ensure close contact between the first conductive element <NUM> and the second conductive element <NUM>, both the first conductive element <NUM> and the second conductive element <NUM> are conductive leaf springs.

The arrangement positions of the first conductive element <NUM> and the second conductive element <NUM> can be determined according to actual design needs. For example, the first conductive element <NUM> is arranged on a support surface of the lifting seat <NUM>, and the second conductive element <NUM> is arranged at the bottom of the base <NUM>. For another example, the first conductive element <NUM> is arranged on a side wall of the lifting seat <NUM>, and the second conductive element <NUM> is arranged on an outer side surface of the base <NUM>. The arrangement positions are not specifically limited herein.

By adopting the above technical solution, after the base <NUM> is placed on the lifting seat <NUM>, the first conductive element <NUM> abuts against the second conductive element <NUM>, that is, the flow test tool <NUM> can be electrified without the additional electrifying operation on the flow test tool <NUM>, thereby further improving the convenience of use of the negative pressure formation apparatus <NUM>.

In some embodiments of the present application, the lifting seat <NUM> includes a second seat body <NUM> and a positioning seat <NUM> mounted on the second seat body <NUM>, the second seat body <NUM> is connected to the power output end of the driver <NUM>, and the base <NUM> is arranged on the positioning seat <NUM>.

The second seat body <NUM> refers to a main support component of the lifting seat <NUM>. The second seat body <NUM> is made of a rigid material, and the rigid material includes, but is not limited to, aluminum, copper, iron, steel, plastic, or the like, which is not specifically limited herein.

The positioning seat <NUM> is a component for limiting the position of the flow test tool <NUM>. The positioning seat <NUM> and the second seat body <NUM> may be integrally formed, or the positioning seat <NUM> and the second seat body <NUM> may also be independently formed respectively, and then, the positioning seat <NUM> and the second seat body <NUM> are assembled.

By adopting the above technical solution, the position of the flow test tool <NUM> is effectively limited to prevent the displacement of the flow test tool <NUM> during the movement of the flow test tool <NUM> driven by the lifting mechanism <NUM>, thereby ensuring that the flow test tool <NUM> can be accurately connected to the formation mechanism <NUM>.

In some embodiments of the present application, referring to <FIG>, the base <NUM> is provided with positioning holes <NUM>, the positioning seat <NUM> is provided with positioning parts <NUM>, and the positioning parts <NUM> are inserted into the positioning holes <NUM>.

The positioning part <NUM> protrudes from the support surface of the lifting seat <NUM> along the height direction of the flow test tool <NUM> (that is, the Z direction shown in <FIG>), and correspondingly, the positioning hole <NUM> is recessed at the bottom of the base <NUM> along the height direction of the flow test tool <NUM>. The outer diameter of the positioning part <NUM> is roughly the same as the pore size of the positioning hole <NUM>. After the positioning part <NUM> is inserted into the positioning hole <NUM>, the outer peripheral wall of the positioning part <NUM> adheres to the hole wall of the positioning hole <NUM> to limit the relative position between the base <NUM> and the positioning seat <NUM>, thereby limiting the position of the flow test tool <NUM>. Of course, due to the manufacturing tolerance, there may be a certain gap between the outer peripheral wall of the positioning part <NUM> and the hole wall of the positioning hole <NUM>.

In some other embodiments of the present application, the base <NUM> is provided with positioning parts <NUM>, the positioning seat <NUM> is provided with positioning holes <NUM>, and the positioning parts <NUM> are inserted into the positioning holes <NUM>.

The positioning part <NUM> protrudes from the bottom of the base <NUM> along the height direction of the flow test tool <NUM> (that is, the Z direction shown in <FIG>), and correspondingly, the positioning hole <NUM> is recessed on the support surface of the lifting seat <NUM> along the height direction of the flow test tool <NUM>.

By adopting the above technical solution, under the cooperation between the positioning parts <NUM> and the positioning holes <NUM>, the position of the flow test tool <NUM> is effectively limited to prevent the displacement of the flow test tool <NUM> during the movement of the flow test tool <NUM> driven by the lifting mechanism <NUM>, thereby ensuring that the flow test tool <NUM> can be accurately connected to the formation mechanism <NUM>.

According to the third aspect, an embodiment of the present application further provides a battery manufacturing device. The battery manufacturing device includes a negative pressure formation apparatus <NUM> according to any one of the above embodiments.

Since the present application uses the negative pressure formation apparatus <NUM> according to any one of the above embodiments, before formation processing on batteries, the flow test tool <NUM> can be used to conduct flow tests on each fluid channel <NUM> of the formation mechanism <NUM>. During the flow test, the flow resistance of the gas in each fluid channel <NUM> is roughly the same to ensure that flow tests can be conducted on each fluid channel <NUM> of the formation mechanism <NUM> at the same time and in the same or similar test environment, thereby effectively improving the accuracy of flow tests on each fluid channel <NUM> of the formation mechanism <NUM> by the flow test tool <NUM>.

Claim 1:
A flow test tool (<NUM>), wherein the flow test tool comprises a base (<NUM>) and a flow test module (<NUM>) mounted on the base, the flow test module is provided with a plurality of test interfaces, and each test interface is connected to a fluid channel (<NUM>) of a mechanism to be tested one by one;
wherein the flow test tool further comprises adapter assemblies (<NUM>), each adapter assembly comprises an adapter (<NUM>) mounted on the base, the adapter is provided with a plurality of adapter channels (<NUM>), one open end of the adapter channel is connected to the test interface one by one, and the other open end of the adapter channel is connected to the fluid channel one by one;
wherein the base comprises a first seat body (<NUM>) and a first sliding rail (<NUM>) arranged on the first seat body, the flow test module is mounted on the first seat body, and the adapter is slidably mounted on the first sliding rail; characterized in that
the base further comprises a second sliding rail arranged on the first seat body, the flow test module is slidably mounted on the second sliding rail, and the second sliding rail and the first sliding rail are arranged in parallel.