Patent Description:
This section only provides background information related to the present disclosure and does not necessarily refer to the prior art.

At present, with the rapid development of new energy vehicles, more and more power batteries have entered the public eye.

During the manufacturing process of a power battery, the electrolyte needs to be injected into a battery case. The electrolyte is generally pre-stored in an electrolyte IBC tank, the electrolyte IBC tank is provided with a chip carrier, the chip carrier is configured to fix a chip, data information, such as the formula of the electrolyte, is stored in the chip, and the data information of the electrolyte needs to be read by a reading head and then entered into a system, so as to ensure the traceability of each production link.

In related technologies, when the reading head reads the electrolyte information in the chip, the lack of fixing measures between the reading head and the chip causes that the reading head can not stably adhere to the chip, and the data reading process is unstable, thereby requiring repeated operations to accurately read the electrolyte information in the chip. Moreover, due to the lack of protective measures during the reading process of the reading head, the reading head and the chip may be corroded because of splashing of corrosive liquids, which may affect the service life of the reading head and the chip.

<CIT> discloses an apparatus comprising the features of the pre-characterising portion of claim <NUM>.

In view of the above problems, the present application provides a reading head protection apparatus and system to achieve stable and reliable adhesion between the reading head and the chip, so as to improve the efficiency of the reading head in reading the stored information in the chip. At the same time, the reading head and the chip can be prevented from being corroded by corrosive liquids, so as to prolong the service life of the reading head and the chip.

According to the first aspect, the present application provides a reading head protection apparatus according to claim <NUM>, including: a protective jacket including a reading head connection end and a chip connection end connected to the reading head connection end, the reading head connection end being configured to connect to a reading head, and the chip connection end being configured to connect to a chip carrier, wherein a first mounting cavity is arranged in the reading head connection end, a second mounting cavity is arranged in the chip connection end, and the second mounting cavity is communicated with the first mounting cavity.

In the reading head protection apparatus provided according to the first aspect of the present application, the reading head connection end and the chip connection end are arranged on the protective jacket, the reading head connection end is configured to connect to the reading head, the chip connection end is configured to connect to the chip carrier, the reading head connection end and the chip connection end are respectively provided with the first mounting cavity and the second mounting cavity which are communicated with each other, the first mounting cavity is adapted to the reading head, and the second mounting cavity is adapted to the chip carrier in shape. As a result, before the reading head reads the stored information in the chip, the chip carrier may first be mounted in the second mounting cavity, and fixed to the chip connection end, and then, the reading head is mounted in the first mounting cavity, and fixed to the reading head connection end after adhering to the chip on the chip carrier, so that the reading head can stably read the stored information in the chip, so as to improve the efficiency of the reading head in reading the stored information in the chip. Furthermore, when the reading head reads the stored information in the chip, the reading head and the chip are located in the protective jacket, so the protective jacket plays a protective role to prevent corrosive liquids such as electrolyte from dripping and splashing onto the surfaces of the reading head and the chip, thereby improving the safety of the reading head in reading the stored information in the chip, and prolonging the service life of the reading head and the chip.

In addition, the reading head protection apparatus provided according to the present application may also have the following additional technical features:
In some embodiments of the present application, the reading head connection end includes a first connecting sleeve, the first mounting cavity is formed in the first connecting sleeve, and a connecting portion is arranged in the first mounting cavity and configured to connect to the reading head.

The reading head can be inserted into the first mounting cavity in the first connecting sleeve and connected to the connecting portion in the first mounting cavity to fix to the protective jacket, thereby stably reading the stored information in the chip.

In some embodiments of the present application, the connecting portion includes an internal thread configured to threadedly connect to the reading head.

The connecting portion includes an internal thread, it can be understood that the reading head has an external thread, and the external thread of the reading head is threadedly connected to the internal thread of the first connecting sleeve, thereby ensuring the reliability of connection between the reading head and the reading head connection end, preventing the reading head from moving relative to the reading head connection end, and facilitating the detachment of the reading head from the chip connection end after reading the stored information in the chip.

According to the invention, the chip connection end includes a second connecting sleeve, the second mounting cavity is formed in the second connecting sleeve and configured to have an interference fit to the chip carrier.

The second mounting cavity is adapted to the chip carrier in size, so that the connection between the chip carrier and the chip connection end can be achieved by interference fit without any additional assembly structure, facilitating the assembly, which prevents the chip carrier from detaching from the second mounting cavity in a free state, and facilitates the detachment between the chip carrier and the chip connection end under an external force.

In some embodiments of the present application, the second connecting sleeve and the first connecting sleeve are coaxially arranged.

The second connecting sleeve and the first connecting sleeve are coaxially arranged, and correspondingly, the second mounting cavity and the first mounting cavity extend along the same axis, so that on the one hand, the overall aesthetics of the product is improved; and on the other hand, after the chip carrier is inserted into the second mounting cavity and the reading head is inserted into the first mounting cavity, the position of the reading head can correspond to the position of the chip, thereby ensuring that the reading head can adhere to the chip.

According to the invention, the inner diameter of the second connecting sleeve is greater than the inner diameter of the first connecting sleeve; and a step portion is formed at an end of the second mounting cavity connected to the first mounting cavity, the step portion has a stopper surface configured to abut against the chip carrier.

By arranging the step portion at the end of the second mounting cavity connected to the first mounting cavity, when the chip carrier is inserted into the second mounting cavity, the stopper surface of the step portion can abut against the chip carrier, and stop and limit the chip carrier, to prevent further movement of the chip carrier towards the direction of the first mounting cavity.

According to the invention, the reading head protection apparatus further includes a sealing member arranged on the stopper surface, the sealing member is provided with a communication hole allowing the reading head to pass through.

By arranging the sealing member on the stopper surface and arranging the communication hole allowing the reading head to pass through on the sealing member, on the one hand, corrosive liquids can be prevented from entering the first mounting cavity along the inner side wall of the second mounting cavity when the chip carrier is inserted into the second mounting cavity, so as to reduce the corrosion of the reading head; and on the other hand, the reading head can pass through the communication hole to be in contact with the chip, thereby ensuring that the reading head can stably read the stored information in the chip.

In some embodiments of the present application, an anti-corrosion coating is arranged on the surface of the protective jacket.

By arranging the anti-corrosion coating on the surface of the protective jacket, the protective jacket can be prevented from being corroded by corrosive liquids, thereby prolonging the service life of the protective jacket.

According to the second aspect, the present application provides an information reading device according to claim <NUM>, including: a reading head having a reading end; a chip carrier embedded with a chip; and a reading head protection apparatus according to any one of claims <NUM> to <NUM>, wherein the chip carrier has an interference fit to the second mounting cavity, the reading head is threadedly connected to the first mounting cavity, and the reading end is configured to be in contact connection with the chip.

In the information reading device provided according to the second aspect of the present application, an external thread is arranged on the outer periphery of the reading head and configured to threadedly connect to the internal thread in the first mounting cavity. When the chip carrier is inserted into the second mounting cavity, the chip carrier faces the reading head to ensure that when the reading head is inserted into the first mounting cavity, the reading head can be in contact connection with the chip, so that the reading head can stably read the stored information in the chip.

In some embodiments of the present application, the reading head is further provided with a stopper portion spaced apart from the reading end, an end of the protective jacket of the reading head protection apparatus away from the chip carrier is provided with a position-limit groove, and the stopper portion is configured to be located in the position-limit groove when the end of the reading head is in contact with the chip.

By arranging the position-limit groove at the end of the protective jacket away from the chip carrier, when the reading head is inserted into the first mounting cavity and is in contact connection with the chip, the stopper portion on the reading head can be located in the position-limit groove to limit the insertion depth of the reading head to prevent the damage to the reading head due to stress concentration, thereby further improving the safety of the reading head in use.

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating the preferred embodiments only and are not to be considered a limitation to the present application. Also, the same components are denoted by the same reference numerals throughout the drawings. In the drawings:.

Embodiments of the technical solutions of the present application will be described in detail below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore are only used as examples and cannot be used to limit the protection scope of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art belonging to the technical field of the present application. The terms used herein are intended only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "including" and "having" and any variations thereof in the specification and the claims of the present application and in the description of drawings above are intended to cover non-exclusive inclusion.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only to distinguish between different objects, and are not to be understood as indicating or implying a relative importance or implicitly specifying the number, particular order, or primary and secondary relation of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically defined.

The reference to "embodiments" herein means that specific features, structures or characteristics described in combination with embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is simply a description of an association of associated objects, which indicates that there may exist three relationships, for example, A and/or B may mean: the presence of A, the presence of both A and B, and the presence of B. In addition, the character "/" herein generally means that the associated objects before and after it are in an "or" relationship.

In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two) groups, and "multiple sheets" refers to two or more (including two) sheets.

In the description of the embodiments of the present application, the orientation or position relationships indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are orientation or position relationships shown based on the drawings. These terms are only for the convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the specified apparatus or component needs to have a specific orientation and needs to be constructed and operated in the specific orientation, so that it can not be understood as a limitation to the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise clearly specified and defined, the technical terms "mounting", "connected", "connection", "fixing", and the like should be understood in a broad sense. For example, the "connection" may be fixed connection, detachable connection or integrated connection, may be mechanical connection or electrical connection, or may be direct connection, indirect connection through an intermediate, internal communication of two components, or interaction between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

During the manufacturing process of a power battery, the electrolyte needs to be injected into a battery case. The electrolyte is generally pre-stored in an electrolyte IBC tank, the electrolyte IBC tank is provided with a chip carrier, the chip carrier is embedded with a chip, data information, such as the formula of the electrolyte, is stored in the chip, and the data information of the electrolyte needs to be read by a reading head and then entered into a system, so as to ensure the traceability of each production link.

When the reading head reads the electrolyte information in the chip, the lack of fixing measures between the reading head and the chip causes that the reading head can not stably adhere to the chip, and the data reading process is unstable, thereby requiring repeated operations to accurately read the electrolyte information in the chip, resulting in lower reading efficiency. Moreover, due to the lack of protective measures for the reading head during the reading process, after the electrolyte is injected from the electrolyte IBC tank into the battery case through a liquid injection tube, the residual electrolyte in the liquid injection tube will inevitably drip onto the chip carrier and the reading head, leading to corrosion of the reading head and the chip, thereby affecting the service life of the reading head and the chip.

In order to avoid the conditions that a reading head cannot stably and reliably read the electrolyte information in a chip and the reading head and the chip may be corroded due to electrolyte splashing during the reading process of the reading head, the present application designs a reading head protection apparatus which uses a reading head connection end and a chip connection end of a protective jacket to respectively connect to the reading head and the chip, and then, the reading head and the chip are in contact connection in a first mounting cavity and a second mounting cavity of the protective jacket, so as to ensure the stability and reliability of the reading head and the chip in contact, thereby improving the stability and reliability of the reading head in reading the electrolyte information in the chip, preventing corrosion caused by contact between the reading head and chip and the electrolyte, and effectively prolonging the service life of the reading head and the chip.

The reading head protection apparatus disclosed in the embodiments of the present application includes, but is not limited to, a reading head for reading the electrolyte information in the chip on an electrolyte IBC tank.

Referring to <FIG>, <FIG> is a schematic structural view of a reading head protection apparatus provided in some embodiments of the present application from one perspective; <FIG> is a schematic structural view of a reading head protection apparatus provided in some embodiments of the present application from another perspective; and <FIG> is a schematic cross-sectional structural view taken along line A-A in <FIG>. According to some embodiments of the present application, the first aspect of the present application provides a protection apparatus <NUM> of a reading head <NUM>. The protection apparatus <NUM> of the reading head <NUM> includes a protective jacket <NUM>, and the protective jacket <NUM> includes a reading head connection end <NUM> and a chip connection end <NUM> connected to the reading head connection end <NUM>, wherein the reading head connection end <NUM> is configured to connect to the reading head <NUM>, the chip connection end <NUM> is configured to connect to a chip carrier <NUM>, a first mounting cavity <NUM> is arranged in the reading head connection end <NUM>, a second mounting cavity <NUM> is arranged in the chip connection end <NUM>, and the second mounting cavity <NUM> is communicated with the first mounting cavity <NUM>.

After the reading head connection end <NUM> is connected to the reading head <NUM>, there will be no relative movement between the reading head <NUM> and the protective jacket <NUM> in a free state; and after the chip connection end <NUM> is connected to the chip carrier <NUM>, there will be no relative movement between the chip carrier <NUM> and the protective jacket <NUM> in a free state.

As a example, cross sections of the first mounting cavity <NUM> and the second mounting cavity <NUM> are both circular, the first mounting cavity <NUM> is configured to at least accommodate the reading end of the reading head <NUM>, and the second mounting cavity <NUM> is configured to at least accommodate an end of the chip carrier <NUM> provided with a chip <NUM>.

The reading head connection end <NUM> and the chip connection end <NUM> are arranged on the protective jacket <NUM>, and the reading head connection end <NUM> and the chip connection end <NUM> are respectively provided with the first mounting cavity <NUM> and the second mounting cavity <NUM> which are communicated with each other. As a result, before the reading head <NUM> reads the stored information in the chip <NUM>, first, the chip carrier <NUM> may be mounted in the second mounting cavity <NUM>, and the chip carrier <NUM> is fixed to the chip connection end <NUM>; and then, the reading head <NUM> is connected to the reading head connection end <NUM>, and the reading end of the reading head <NUM> adheres to the chip <NUM> on the chip carrier <NUM> in the second mounting cavity <NUM> through the first mounting cavity <NUM>, so that the reading head <NUM> can stably read the stored information in the chip <NUM>, so as to improve the efficiency of the reading head <NUM> in reading the stored information in the chip <NUM>. Furthermore, when the reading head <NUM> reads the stored information in the chip <NUM>, the reading head <NUM> and the chip <NUM> are located in the protective jacket <NUM>, so the protective jacket <NUM> plays a protective role to prevent corrosive liquids such as electrolyte from dripping and splashing onto the surfaces of the reading head <NUM> and the chip <NUM>, thereby improving the safety of the reading head <NUM> in reading the stored information in the chip <NUM>, and prolonging the service life of the reading head <NUM> and the chip <NUM>.

Referring to <FIG> and <FIG>, according to some embodiments of the present application, the reading head connection end <NUM> includes a first connecting sleeve, the first mounting cavity <NUM> is formed in the first connecting sleeve, and a connecting portion configured to connect to the reading head <NUM> is arranged in the first mounting cavity <NUM>.

As a example, an external thread <NUM> is arranged on the outer periphery of the reading head <NUM>, and at this time, the connecting portion is an internal thread <NUM>; or an elastic bulge may be arranged on the outer periphery of the reading head <NUM>, and at this time, the connecting portion is a clamping groove.

When the reading head <NUM> is inserted into the first mounting cavity <NUM> in the first connecting sleeve and connected to the connecting portion in the first mounting cavity <NUM>, the fixation between the reading head <NUM> and the protective jacket <NUM> can be achieved, thereby stably reading the stored information in the chip <NUM>.

Referring to <FIG> and <FIG>, according to some embodiments of the present application, the connecting portion includes an internal thread <NUM> configured to threadedly connect to the reading head <NUM>.

It can be understood that the external thread <NUM> is arranged on the outer periphery of the reading head <NUM>, at this time, the connecting portion is the internal thread <NUM>, and the external thread <NUM> of the reading head <NUM> is threadedly connected to the internal thread <NUM> of the first connecting sleeve, thereby ensuring the reliability of connection between the reading head <NUM> and the reading head connection end <NUM>, preventing the reading head <NUM> from moving relative to the reading head connection end <NUM>, and facilitating the detachment of the reading head <NUM> from the chip connection end <NUM> after reading the stored information in the chip <NUM>.

According to some embodiments of the present application, the chip connection end <NUM> includes a second connecting sleeve, the second mounting cavity <NUM> is formed in the second connecting sleeve, and the second mounting cavity <NUM> is configured to have an interference fit to the chip carrier <NUM>.

The interference fit refers to the connection achieved by making the fit between parts have an interference effect.

The second mounting cavity <NUM> has an interference fit to the chip carrier <NUM>, an assembly structure is not needed, the assembly is convenient, the chip carrier <NUM> can be prevented from detaching from the second mounting cavity <NUM> in a free state, and the chip carrier <NUM> and the chip connection end <NUM> can be detached conveniently under the action of an external force. Of course, an internal thread may be arranged in the second connecting sleeve, and an external thread may be arranged on the outer periphery of the chip carrier <NUM>, so that the chip carrier <NUM> is threadedly connected to the second connecting sleeve.

Referring to <FIG> and <FIG>, according to some embodiments of the present application, the second connecting sleeve and the first connecting sleeve are coaxially arranged.

The first connecting sleeve and the second connecting sleeve are barrel-shaped and are arranged along the same axis, and correspondingly, the second mounting cavity <NUM> and the first mounting cavity <NUM> extend along the same axis.

By adopting the above arrangement mode, on the one hand, the overall product is relatively regular, thereby improving the overall aesthetics of the product; and on the other hand, after the chip carrier <NUM> is inserted into the second mounting cavity <NUM> and the reading head <NUM> is inserted into the first mounting cavity <NUM>, the position of the reading head <NUM> can correspond to the position of the chip <NUM>, thereby ensuring that the reading head <NUM> can adhere to the chip <NUM>.

Referring to <FIG> and <FIG>, according to some embodiments of the present application, the inner diameter of the second connecting sleeve is greater than the inner diameter of the first connecting sleeve; and a step portion is formed at an end of the second mounting cavity <NUM> connected to the first mounting cavity <NUM>, the step portion has a stopper surface <NUM>, and the stopper surface <NUM> is configured to abut against the chip carrier <NUM>.

The inner diameter of the first connecting sleeve is greater than the inner diameter of the second connecting sleeve, that is, the diameter of the first mounting cavity <NUM> is greater than the diameter of the second mounting cavity <NUM>.

When the chip carrier <NUM> is inserted into the second mounting cavity <NUM> and the stopper surface <NUM> of the step portion abuts against the chip carrier <NUM>, the stopper surface <NUM> can play a stop limit role to prevent further movement of the chip carrier <NUM> along the second mounting cavity <NUM>.

Referring to <FIG>, according to some embodiments of the present application, the protection apparatus <NUM> of the reading head <NUM> further includes a sealing member <NUM> arranged on the stopper surface <NUM>, and the sealing member <NUM> is provided with a communication hole <NUM> allowing the reading head <NUM> to pass through.

As a example, the sealing member <NUM> is a rubber pad or a silicone pad, and the rubber pad or the silicone pad has elasticity to achieve elastic deformation under the squeezing action of the chip carrier <NUM>, thereby playing a sealing role to prevent the electrolyte from entering the first mounting cavity <NUM> along the inner wall of the second mounting cavity <NUM>.

By arranging the sealing member <NUM> on the stopper surface <NUM>, on the one hand, corrosive liquids such as electrolyte can be prevented from entering the first mounting cavity <NUM> along the inner side wall of the second mounting cavity <NUM> when the chip carrier <NUM> is inserted into the second mounting cavity <NUM>, so as to reduce the corrosion of the reading head <NUM>; and on the other hand, the reading head <NUM> can pass through the communication hole <NUM> to be in contact with the chip <NUM>, thereby ensuring that the reading head <NUM> can stably read the stored information in the chip <NUM>.

According to some embodiments of the present application, an anti-corrosion coating is arranged on the surface of the protective jacket <NUM>.

The anti-corrosion coating refers to a covering layer coated on the surface of the protective jacket <NUM> to isolate the protective jacket <NUM> from surrounding media to prevent corrosion of the protective jacket <NUM>. The surface of the protective jacket <NUM> includes an inner surface and an outer surface of the protective jacket <NUM>.

By arranging the anti-corrosion coating on the surface of the protective jacket <NUM>, the protective jacket <NUM> can be prevented from being corroded by corrosive media, thereby prolonging the service life of the protective jacket <NUM>.

Referring to <FIG>, according to some embodiments of the present application, the present application provides a protection apparatus <NUM> of a reading head <NUM>. The protection apparatus <NUM> of the reading head <NUM> includes a protective jacket <NUM> and a sealing member <NUM>. The protective jacket <NUM> includes a first connecting sleeve and a second connecting sleeve coaxial with the first connecting sleeve. A first mounting cavity <NUM> is arranged in the first connecting sleeve, and a second mounting cavity <NUM> communicated with the first mounting cavity <NUM> is arranged in the second connecting sleeve. An internal thread <NUM> is arranged in the first mounting cavity <NUM>, and the internal thread <NUM> is configured to threadedly connect to the reading head <NUM>. The second mounting cavity <NUM> is configured to have an interference fit to the chip carrier <NUM>, and a step portion is formed at an end of the second mounting cavity <NUM> connected to the first mounting cavity <NUM>. The step portion has a stopper surface <NUM> configured to abut against the chip carrier <NUM>. The sealing member <NUM> is arranged on the stopper surface <NUM> to prevent corrosive liquids such as the electrolyte from entering the first mounting cavity <NUM> along the wall surface of the second mounting cavity <NUM>. In this way, after the chip <NUM> has an interference fit to the second mounting cavity <NUM>, when the reading end of the reading head <NUM> is inserted into the first mounting cavity <NUM> and is in contact connection with the chip <NUM>, the reading head <NUM> is threadedly connected to the internal thread <NUM> in the first mounting cavity <NUM>, thereby stably reading the stored information in the chip <NUM>. At the same time, since the reading head <NUM> and the chip <NUM> are located in the protective jacket <NUM>, the protective jacket <NUM> can play a protective role to prevent the reading head <NUM> and the chip <NUM> from being corroded by corrosive liquids such as the electrolyte, thereby prolonging the service life of the reading head <NUM> and the chip <NUM>.

Referring to <FIG>, according to some embodiments of the present application, the second aspect of the present application provides an information reading device <NUM>, including a reading head <NUM>, a chip carrier <NUM> and a protection apparatus <NUM> of a reading head <NUM> according to any item in the first aspect, wherein the reading head <NUM> has a reading end, and the reading end is configured to be in contact connection with the chip <NUM>; the chip carrier <NUM> is embedded with the chip <NUM>; and the chip carrier <NUM> has an interference fit to the second mounting cavity <NUM>, and the reading head <NUM> is threadedly connected to the first mounting cavity <NUM>.

In the information reading device <NUM> provided according to the second aspect of the present application, an external thread <NUM> is arranged on the outer periphery of the reading head <NUM>, and the external thread <NUM> is configured to threadedly connect to the internal thread <NUM> in the first mounting cavity <NUM>. When the chip carrier <NUM> is inserted into the second mounting cavity <NUM>, the chip carrier <NUM> faces the reading head <NUM> to ensure that when the reading head <NUM> is inserted into the first mounting cavity <NUM>, the reading head <NUM> can be in contact connection with the chip <NUM>, so that the reading head <NUM> can stably read the stored information in the chip <NUM>.

According to some embodiments of the present application, the reading head <NUM> is further provided with a stopper portion <NUM> spaced apart from the reading end, an end of the protective jacket <NUM> of the protection apparatus <NUM> of the reading head <NUM> away from the chip carrier <NUM> is provided with a position-limit groove <NUM>, and the stopper portion <NUM> is configured to be located in the position-limit groove <NUM> when the end of the reading head <NUM> is in contact with the chip <NUM>.

As a example, position-limit groove <NUM> is a circular groove, and the stopper portion <NUM> is an annular protrusion that partially protrudes from the periphery of the end of the reading head <NUM> away from the chip carrier <NUM> in the direction away from axis of the reading head <NUM>.

By arranging the position-limit groove <NUM> at the end of the protective jacket <NUM> away from the chip carrier <NUM>, when the reading head <NUM> is inserted into the first mounting cavity <NUM> and is in contact connection with the chip <NUM>, the stopper portion <NUM> on the reading head <NUM> can be located in the position-limit groove <NUM> to limit the insertion depth of the reading head <NUM> to prevent the damage to the reading head <NUM> due to stress concentration, thereby further improving the safety of the reading head <NUM> in use.

The above descriptions are only preferred specific embodiments.

Claim 1:
A reading head protection apparatus (<NUM>), comprising:
a protective jacket (<NUM>) comprising a reading head connection end (<NUM>) and a chip connection end (<NUM>) connected to the reading head connection end (<NUM>), the reading head connection end (<NUM>) being configured to connect to a reading head (<NUM>), and the chip connection end (<NUM>) being configured to connect to a chip carrier (<NUM>), wherein
a first mounting cavity (<NUM>) is arranged in the reading head connection end (<NUM>), a second mounting cavity (<NUM>) is arranged in the chip connection end (<NUM>), and the second mounting cavity (<NUM>) is communicated with the first mounting cavity (<NUM>),
the chip connection end (<NUM>) comprises a second connecting sleeve, the second mounting cavity (<NUM>) is formed in the second connecting sleeve and configured to have an interference fit to the chip carrier (<NUM>),
the inner diameter of the second connecting sleeve is greater than the inner diameter of the first connecting sleeve; and
a step portion is formed at an end of the second mounting cavity (<NUM>) connected to the first mounting cavity (<NUM>), the step portion has a stopper surface (<NUM>) configured to abut against the chip carrier (<NUM>),
characterised by
a sealing member (<NUM>) arranged on the stopper surface (<NUM>), wherein
the sealing member (<NUM>) is provided with a communication hole (<NUM>) allowing the reading head (<NUM>) to pass through.