Stacking Power Supply Cabinet

A stacking power supply cabinet is provided. The stacking power supply cabinet includes a top assembly and at least one battery module. In a case that the number of the battery module is more than one and the multiple battery modules are stacked sequentially from top to bottom, an electric connection path for power supply and/or storage is established among the stacked multiple battery modules, and the electric connection path is conducted via a power transmission line in the top assembly, and then the battery modules are charged. Thus, in the installation process of the power supply cabinet, the electric connection path for the power supply and/or storage among the multiple stacked battery modules is uncharged before the top assembly is installed, thereby reducing the risk of electric shock to the human body and improving the safety during the installation process of the stacking power supply cabinet.

The present disclosure claims the priority to Chinese Patent Application No. 202010849205.2, titled “STACKING POWER SUPPLY CABINET”, filed on Aug. 21, 2020, with the China National Intellectual Property Administration, the content of which is incorporated herein by reference.

FIELD

The present disclosure relates to the technology field of power electronics, and particularly, to a stacking power supply cabinet.

BACKGROUND

With the rapid development of photovoltaic distributed energy system, a lithium battery, as an import part of a photovoltaic energy storage battery, is widely used in both daily life and industrial production. The voltage of one lithium battery is low, which cannot meet the requirements of an external device. In order to meet the requirements, multiple lithium batteries are usually connected in series to form a power supply cabinet with a voltage of several hundred volts, and each lithium battery in the power supply cabinet is served as a battery module.

In practice, a specific structure of the power supply cabinet is shown inFIG. 1, and an internal circuit thereof is shown inFIG. 2. Referring toFIGS. 1 and 2, the power supply cabinet is usually installed in a particular sequence: firstly a base assembly03is installed at the bottom, then battery modules02are stacked layer by layer from bottom to top, and finally a power management module01is installed at the top. In this installation sequence, there is a voltage between two poles of a connector port on an upper surface of each battery module02, and the voltage will increase by one step every time one more battery module02is stacked. Furthermore, the risk of electric shock to the human body is high during the installation process since the distance between the two poles of the connector port on the upper surface of the battery module02is small.

SUMMARY

In view of the above, a stacking power supply cabinet is provided according to embodiments of the present disclosure, so as to reduce the risk of electric shock to the human body during an installation process of a power supply cabinet.

To realize the aforementioned object, following technical solutions are provided according to the embodiments of the present disclosure.

A stacking power supply cabinet is provided, including a top assembly and at least one battery module;

in a case that a number of the battery modules is more than one, the multiple battery modules are sequentially stacked from top to bottom; and

an electric connection path for power supply and/or storage is established among the multiple battery modules, and the electric connection path is conducted by the top assembly.

Optionally, the top assembly is a top cover;

wherein the stacking power supply cabinet further includes a base assembly and a battery management module;

the top cover, the base assembly, the battery management module and the multiple battery modules are respectively provided with a power transmission line and a signal transmission line inside;

the power transmission line in the top cover is configured to achieve a short-circuit connection function of the power transmission line and configured to connect to an uppermost battery module;

the power transmission line in the base assembly is configured to connect to the battery management module and a bottommost battery module; and

the power transmission line in the battery management module is configured to connect to the base assembly and an external device.

Optionally, the battery management module is arranged on a side of the stacking power supply cabinet.

Optionally, the battery management module further includes: a breaker, a first terminal of a quick pluggable terminal, a positive connector of an energy storage device, and a negative connector of the energy storage device;

where two power transmission lines from a first end of the breaker pass through the first terminal of the quick pluggable terminal, and are connected to the base assembly; and

another two power transmission lines from a second end of the breaker are connected to an inner terminal of the positive connector of the energy storage device and an inner terminal of the negative connector of the energy storage device respectively.

Optionally, the number of the power transmission lines are three inside each of the multiple battery modules, that is, a first power transmission line, a second power transmission line and a third power transmission line, wherein:

the first power transmission line is connected to a positive electrode of the battery module where the first power transmission line is located, and is led out from a first port of a second terminal of a quick pluggable terminal on an upper surface of the battery module;

the second power transmission line is connected to a negative electrode of the battery module where the second power transmission line is located, and is led out from a first port of a first terminal of a quick pluggable terminal on a lower surface of the battery module; and

the third power transmission line is connected between a second port of the second terminal of the quick pluggable terminal and a second port of the first terminal of the quick pluggable terminal.

Optionally, the top cover further includes: a DC/DC module, a positive connector of a charging device and a negative connector of the charging device; wherein:

additional two power transmission lines from the first end of the breaker inside the battery management module are connected to the base assembly, and then connected to a fourth power transmission line and a fifth transmission line passing through each of the multiple battery modules sequentially from bottom to up, and then connected to one side of the DC/DC module;

another side of the DC/DC module is connected to an inner terminal of the positive connector of the charging device and an inner terminal of the negative connector of the charging device respectively.

Optionally, the number of the power transmission lines is five inside each of the multiple battery modules, that is, a first power transmission line, a second power transmission line, a third power transmission line, a fourth power transmission line and a fifth power transmission line; wherein:

the first power transmission line is connected to a positive electrode of the battery module where the first power transmission line is located, and is led out from a first port of a second terminal of a quick pluggable terminal on an upper surface of the battery module;

the second power transmission line is connected to a negative electrode of the battery module where the second power transmission line is located, and is led out from a first port of a first terminal of a quick pluggable terminal on a lower surface of the battery module;

the third power transmission line is connected between a second port of the second terminal of the quick pluggable terminal and a second port of the first terminal of the quick pluggable terminal;

the fourth power transmission line is connected between a third port of the second terminal of the quick pluggable terminal and a third port of the first terminal of the quick pluggable terminal; and

the fifth power transmission line is connected between a fourth port of the second terminal of the quick pluggable terminal and a fourth port of the first terminal of the quick pluggable terminal.

Optionally, one side of the battery module is concave, to embed the battery management module.

Optionally, the stacking power supply cabinet further includes a side cover configured to cover other parts on the side of the battery module.

Optionally, the top assembly is a battery management module; wherein:

the stacking power supply cabinet further includes a base assembly;

the base assembly, the battery management module and each of the multiple battery modules are respectively provided with a corresponding power transmission line and a corresponding signal transmission line inside;

the power transmission line in the battery management module is configured to achieve a short-circuit connection function of the power transmission line and a connection function with an external device, and configured to connect to an uppermost battery module; and

the power transmission line in the base assembly is configured to connect to a bottommost battery module.

Optionally, the battery management module further includes: a breaker, a first terminal of a first quick pluggable terminal, a first terminal of a second quick pluggable terminal, a positive connector of an energy storage device, and a negative connector of the energy storage device;

wherein two power transmission lines from a first end of the breaker pass through the first terminal of the first quick pluggable terminal and all the battery modules, and are connected to a second terminal of the first quick pluggable terminal of the base assembly;

another two power transmission lines from a second end of the breaker are connected to an inner terminal of the positive connector of the energy storage device and an inner terminal of the negative connector of the energy storage device respectively;

another power transmission line inside the battery management module is arranged in the first terminal of the second quick pluggable terminal, two terminals of the power transmission line are led out from a first port of the first terminal of the second quick pluggable terminal and a second port of the first terminal of the second quick pluggable terminal respectively, pass through all the battery modules, and are connected to a second terminal of the second quick pluggable terminal of the base assembly; and

two power transmission lines from the second terminal of the first quick pluggable terminal are connected to the second terminal of the second quick pluggable terminal inside the base assembly through.

Optionally, the battery management module further includes: a DC/DC module, a positive connector of a charging device, and a negative connector of the charging device;

where two power transmission lines from the first end of the breaker are connected to a side of the DC/DC module; and

another side of the DC/DC module is connected to an inner terminal of the positive connector of the charging device and an inner terminal of the negative connector of the charging device respectively.

Optionally, the number of the power transmission lines is five inside each of the multiple battery modules, that is, a first power transmission line, a second power transmission line, a third power transmission line, a fourth power transmission line and a fifth power transmission line; wherein:

the first power transmission line is connected to a positive electrode of the battery module where the first power transmission line is located, and is led out from a first port of a second terminal of a first quick pluggable terminal on an upper surface of the battery module;

the second power transmission line is connected to a negative electrode of the battery module where the second power transmission line is located, and is led out from a first port of a first terminal of a first quick pluggable terminal on a lower surface of the battery module;

the third power transmission line is connected between a second port of the second terminal of the first quick pluggable terminal and a second port of the first terminal of the first quick pluggable terminal;

the fourth power transmission line is connected between a first port of the second terminal of a second quick pluggable terminal on the upper surface of the battery module and a first port of the first terminal of a second quick pluggable terminal on the lower surface of the battery module; and

the fifth power transmission line is connected between a second port of the second terminal of the second quick pluggable terminal and a second port of the first terminal of the second quick pluggable terminal.

Optionally, each of the multiple battery modules includes: a battery management system (BMS), a quick pluggable terminal and at least one battery cell; wherein:

positive electrodes of all the battery cells in the battery module are connected in series to form a positive electrode of the battery module, and negative electrodes of all the battery cells in the battery module are connected in series to form a negative electrode of the battery module;

the BMS is connected to all battery cells in the battery module, and is connected to a signal transmission line inside the battery module where the BMS is located; and

the quick pluggable terminal includes at least one pair of quick pluggable terminals, and each of the at least one pair of quick pluggable terminals includes a second terminal arranged on an upper surface of the battery module and a first terminal arranged on a lower surface of the battery module.

According to the aforementioned technical solutions, in the stacking power supply cabinet provided by the present disclosure, in a case that a number of the battery modules is more than one and multiple battery modules are stacked sequentially from top to bottom, an electric connection path for power supply and/or storage is established among the multiple stacked battery modules, and the electric connection path is conducted via a power transmission line in a top assembly, and then the battery modules are charged. Thus, in the installation process of the power supply cabinet, the electric connection path for the power supply and/or storage among the multiple stacked battery modules is uncharged before the top assembly is installed, thereby reducing the risk of electric shock to the human body and improving the safety during the installation process of the stacking power supply cabinet.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present disclosure will be described clearly and completely hereinafter in conjunction with the drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only some rather than all of the embodiments of the present disclosure. Any other embodiments obtained based on the embodiments of the present disclosure by those skilled in the art without any creative effort fall within the scope of protection of the present disclosure.

In the present disclosure, the relationship terminologies such as “first”, “second” and the like are only used herein to distinguish one entity or operation from another, rather than to necessitate or imply that the actual relationship or order exists between the entities or operations. Further, the term “include”, “comprise” or any variant thereof is intended to encompass nonexclusive inclusion so that a process, method, article or device including a series of elements includes not only those elements but also other elements which have not been listed definitely or an element(s) inherent to the process, method, article or device. Moreover, the expression “comprising a(n) . . . ” in which an element is defined will not preclude presence of an additional identical element(s) in a process, method, article or device comprising the defined element(s) unless further defined.

Reference is made toFIG. 1, which is a power supply cabinet in prior art. The power supply cabinet includes: a power management module01, battery modules02and a base assembly03. The base assembly03is at the bottom, the battery modules02are sequentially stacked on the base assembly03, and the power management module01is installed on an uppermost battery module02.FIG. 2illustrates an internal circuit of the power supply cabinet. The base assembly03has a function of short-circuit connection. The electric connection among the battery modules02is conducted before the power management module01is installed, that is, an electric path between ports of a plug connector on an upper surface of the uppermost battery module02and batteries in all battery modules02is formed. Thus, two poles of the ports of the plug connector on the upper surface of the uppermost battery module02are always charged. Furthermore, the more the battery modules02are stacked, the greater the voltage between the two poles of the ports of the plug connector on the upper surface of the uppermost battery module02is, therefore resulting in a high risk of electric shock to human body.

A stacking power supply cabinet is provided according to an embodiment of the present disclosure, to solve the problem of high risk of electric shock to human body during the installation process of a power supply cabinet. The stacking power supply cabinet includes a top assembly and at least one battery module04. Reference is made toFIGS. 3aand 4a, which illustrate a specific connection method of the stacking power supply cabinet.

The number of the battery module04may be selected according to specific conditions, which is not limited herein.

In a case that the number of the battery module04in the stacking power supply cabinet is more than one, multiple battery modules04are stacked from top to bottom in sequence. This kind of top-to-bottom stacking way allows flexible configuration of battery capacity, and additional wiring scheme or an external cabinet are not required, thereby resulting in convenient and easy installation of the power supply cabinet.

After the battery modules are stacked, an electric connection path for power supply and/or storage established among the multiple battery modules cannot be conducted, and only after the installation of the top assembly is completed, the electric connection path is conducted through the top assembly, specifically through a power transmission line200inside the top assembly (seeFIG. 3bandFIG. 4b).

According to the aforementioned technical solutions, in the stacking power supply cabinet, the electric connection path for the power supply and/or storage is established among the stacked multiple battery modules40, and the electric connection path is conducted via the top assembly, and then battery modules are charged. Thus, in the installation process of the power supply cabinet, the electric connection path for the power supply and/or storage among the multiple stacked battery modules40is uncharged before the top assembly is installed, thereby reducing the risk of electric shock to the human body and improving the safety during the installation process of the stacking power supply cabinet.

Optionally, the top assembly in the foregoing embodiment may be a top cover10(as shown inFIG. 3a) or a battery management module30(as shown inFIG. 4a). In practical applications, the top assembly includes but is not limited to the aforementioned two implementations which are merely two examples for illustration herein. The top assembly may be selected according to actual situations, and all of which fall within the protection scope of the present disclosure.

Two stacking power supply cabinets corresponding to the aforementioned two implementations are described in detail hereinafter.

Reference is made toFIGS. 3aand 3b, which illustrate a specific structure of a stacking power supply cabinet according to an embodiment of the present disclosure. The stacking power supply cabinet includes: a base assembly20, a battery management module30, a top cover10functioned as a top assembly and at least one battery module40.

If the number of the battery module40is more than one in the stacking power supply cabinet, multiple battery modules40are sequentially stacked from top to bottom. The top cover10, the base assembly20, the battery management module30and the multiple battery modules40are respectively provided with a power transmission line200and a signal transmission line inside. The power transmission line200in the top cover10is configured to achieve a short-circuit connection function of the power transmission line200and configured to connect to an uppermost battery module40. The power transmission line200in the base assembly20is configured to connect to the battery management module30and a bottommost battery module40. The power transmission line200in the battery management module30is configured to connect to the base assembly20and an external device.

Referring toFIGS. 3aand 3b, the battery management module30includes: a breaker33, a first terminal60of a quick pluggable terminal, a positive connector31of an energy storage device, a negative connector32of the energy storage device, and four power transmission lines200.

In the battery management module30, two power transmission lines200are led out from a first end of the breaker33, pass through the first terminal60of the quick pluggable terminal and are connect to the base assembly20, and then are connected to a bottommost battery module40via the base assembly20. Another two power transmission lines200are led out from a second end of the breaker33, and are connected to an inner terminal of the positive connector31of the energy storage device and an inner terminal of the negative connector32of the energy storage device respectively. An outer terminal of the positive connector31of the energy storage device and an outer terminal of the negative connector32of the energy storage device are used for connecting to an external device.

Referring toFIGS. 3aand 3b, the internal circuit of the top cover10includes: one power transmission line200and a first terminal60of a quick pluggable terminal. The power transmission line200is connected between a first port of the first terminal60of the quick pluggable terminal and a second port of the first terminal60of the quick pluggable terminal, and thus the two ports are short-circuited.

Referring toFIGS. 3aand 3b, the internal circuit of the base assembly20includes: a second terminal51of a first quick pluggable terminal, a second terminal52of a second quick pluggable terminal, and two power transmission lines200. One of the two power transmission lines200is connected between a first port of the second terminal51of the first quick pluggable terminal and a second port of the second terminal52of the second quick pluggable terminal. Another one of the two power transmission lines200is connected between a second port of the second terminal51of the first quick pluggable terminal and a first port of the second terminal52of the second quick pluggable terminal.

Referring toFIGS. 3aand 3b, the internal circuit of each of the multiple battery modules40includes three power transmission lines200, that is, a first power transmission line200, a second power transmission line200and a third power transmission line200. The first power transmission line200is connected to a positive electrode B+ of the battery module40where the first power transmission line200is located, and is led out from a first port of a second terminal50of a quick pluggable terminal on an upper surface of the battery module40. The second power transmission line200is connected to a negative electrode B− of the battery module40, and is led out from a first port of a first terminal60of the quick pluggable terminal on a lower surface of the battery module40. The third power transmission line200is connected between a second port of the second terminal50of the quick pluggable terminal and a second port of the first terminal60of the quick pluggable terminal of the battery module40.

According to the detailed description of components of the stacking power supply cabinet in the above, the stacking power supply cabinet with the internal circuit structure shown inFIGS. 3aand 3bcan be used as an energy storage device, to meet requirements of energy storage.

In practical applications, except for energy storage, the power supply cabinet is also required to have a charging function, to meet the demand for charging external devices. In the prior art, the energy storage cabinet cannot charge external devices, so an additional charging device is installed to meet the demand for charging. Due to the installation of the additional charging device, not only the cost but also the occupied area of the energy storage cabinet may increase.

In consideration of the above problems, a stacking power supply cabinet with another circuit structure is also provided according to an embodiment of the present disclosure. Referring toFIGS. 6aand 6b, the top cover10, based on the structure as shown inFIGS. 3aand 3b, further includes: a DC/DC module11, a positive connector12of a charging device, a negative connector13of a charging device, and additional four power transmission lines200. One of the additional four first power transmission line200is used to connect a positive electrode at a first side of the DC/DC module11to an inner terminal of the positive connector12of the charging device. Another one of the additional four power transmission line200is used to connect a negative electrode at the first side of the DC/DC module11to an inner terminal of the negative connector13of the charging device. Another two of the additional four power transmission line200are led out from a second side of the DC/DC module11, and are connected to a third port and a fourth port of the first terminal60of the quick pluggable terminal in the top cover10respectively.

Each battery module40includes five of the power transmission lines200, that is, a first power transmission line200, a second power transmission line200, a third power transmission line200, a fourth power transmission line200and a fifth power transmission line200. The first power transmission line200is connected to a positive electrode B+ of a battery module40where the first power transmission line200is located, and is led out from a first port of a second terminal50of a quick pluggable terminal on an upper surface of the battery module40. The second power transmission line200is connected to a negative electrode B− of the battery module40, and is led out from a first port of a first terminal60of the quick pluggable terminal on a lower surface of the battery module40. The third power transmission line200is connected between a second port of the second terminal50of the quick pluggable terminal on the upper surface of the battery module40and a second port of the first terminal60of the quick pluggable terminal on the lower surface of the battery module40. The fourth power transmission line200is connected between a third port of the second terminal50of the quick pluggable terminal on the upper surface of the battery module40and a third port of the first terminal60of the quick pluggable terminal on the lower surface of the battery module40. The fifth power transmission line400is connected between a fourth port of the second terminal50of the quick pluggable terminal on the upper surface of the battery module40and a fourth port of the first terminal60of the quick pluggable terminal on the lower surface of the battery module40.

The internal circuit of the base assembly20, based on the structure as shown inFIGS. 3aand 3b, further includes additional two power transmission lines200. One of the additional two power transmission lines200is connected between a third port of the second terminal51of the first quick pluggable terminal and a third port of the second terminal52of the second quick pluggable terminal in the base assembly20. Another one of the additional two power transmission lines200is connected between a fourth port of the second terminal51of the first quick pluggable terminal and a fourth port of the second terminal52of the second quick pluggable terminal in the base assembly20.

The internal circuit of the battery management module30, based on the structure as shown inFIGS. 3aand 3b, further includes additional two power transmission lines200. The additional two power transmission lines200led out from the first end of the breaker33are connected to a third port and a fourth port of the first terminal60of the quick pluggable terminal in the battery module30, and then connected to the base assembly20, and then connected to a fourth power transmission line and a fifth transmission line passing through each of the plurality of battery modules sequentially from bottom to up, and finally connected to the second side of the DC/DC module.

From the above detailed description of components of the stacking power supply cabinet, it can be seen that the stacking power supply cabinet with the internal circuit structure shown inFIGS. 6aand 6bcan not only be functioned as an energy storage device, but also as a charging device, that is, the stacking power supply cabinet is capable of charging electrical devices with different voltage levels through the voltage conversion of the DC/DC module11. Thus, the stacking power supply cabinet can realize functions of both the energy storage device and the charging device, thereby saving the cost and occupation of the stacking power supply cabinet.

Referring toFIG. 5, in practical applications, the base assembly20may be arranged on the lowermost layer, each battery module40is sequentially stacked on the base assembly20, and the top cover10is arranged above an uppermost battery module40. In order to facilitate the connection of internal power transmission lines, the battery management module30may be arranged on a side of the stacking power supply cabinet. In a preferred embodiment, the battery management module30is arranged on a lower side of the stacking power supply cabinet as shown inFIG. 5. In order to protect the battery management module30, the battery management module30is preferably arranged in an independent switching box as shown inFIG. 5.

In practical applications, the specific implementation manner in which the battery management module30is arranged on the lower side of the stacking power supply cabinet may be: the battery management module30is embedded in the battery module40as shown inFIG. 5; alternatively, the battery management module30is externally attached to any side surface of the battery module40, which may be selected according to actual applications and will not be limited herein. In practical applications, the specific implementation manner includes but is not limited to the above two implementations, and all of which fall within the protection scope of the present disclosure.

In a case that the battery management module30is embedded in the battery module40, as shown inFIG. 7, one side of the battery module40is concave so that the battery management module30can be embedded. A second terminal50of a quick pluggable terminal is provided at a right-angle corner of an upper surface of the battery module40, and a first terminal60of the quick pluggable terminal is provided at a corresponding position of a lower surface of the battery module40(which is not shown inFIG. 7, and can be seen inFIG. 3bandFIG. 6b).

Referring toFIG. 3bandFIG. 6b, a first terminal60of a quick pluggable terminal is provided at a position of a lower surface of the top cover10corresponding to the position of the second terminal50of the quick pluggable terminal in the battery module40, to meet the requirement of quickly establishing the electrical connection between the top cover10and the battery management module40.

Referring toFIG. 8, a second terminal51of a first quick pluggable terminal is provided at a position on an upper surface of the base assembly20corresponding to the position of the first terminal60of the quick pluggable terminal in the battery module40, to meet the requirement of quickly establishing the electrical connection between the base assembly20and the battery module40. Furthermore, a second terminal52of a second quick pluggable terminal is provided on an upper surface of the base assembly20, at a side adjacent to the second terminal51of the first quick pluggable terminal in the base assembly20, to meet the requirement of quickly establishing the electrical connection between the base assembly20and the battery management module30.

Referring toFIG. 9, a first terminal60of a quick pluggable terminal is provided at the bottom of the battery management module30, to quickly establish an electrical connection with the base assembly20. A positive connector31of an energy storage device and a negative connector32of the energy storage device (which are not shown inFIG. 9, and can be seen inFIG. 3bandFIG. 6b) are provided on the top of the battery management module30. Threaded through holes70are provided at four right-angles on a side of the battery management module30, to facilitate the installation of the battery management module30.

It should be noted that, two handles100with a predetermined distance are provided respectively at a position on the upper surface of the base assembly20and a position on the upper surface of the battery module40corresponding to the position on the upper surface of the base assembly20. Two concave structures (not shown in the figure) with a predetermined distance are provided at a position on a lower surface of the top cover10and a position on a lower surface of the battery module40corresponding to the position on the lower surface of the top cover10. The two handles100and the two concave structures are used to limit the position during installation. The lower handle100is fastened to the box wall of the upper component by a bolt for the purpose of fixing. This installation method of combining the mounting component with the handle100can not only reduce the space occupied by the stacking power supply cabinet, but also reduce the manufacturing cost of the stacking power supply cabinet, which is beneficial to practical application of the stacking power supply cabinet.

Optionally, in a case that one side of the battery module40in the stacking power cabinet is concave and the number of battery modules40is multiple, the stacking power cabinet further includes: a side cover for covering other parts on the side surface where the switching box is located, as shown inFIG. 5. Thus, the aesthetics of the stacking power supply cabinet is improved, and dust accumulation is effectively prevented.

It should be noted that, in the aforementioned embodiments, the first terminal60of the quick pluggable terminal may be a male terminal of the quick pluggable terminal or a female terminal of the quick pluggable terminal, which is not limited herein; and the second terminal50of the quick pluggable terminal is in the same case. It should be noted that, in the aforementioned embodiments, the electrical connection between corresponding two parts is established through the first terminal60of the quick pluggable terminal and the second terminal50of the quick pluggable terminal. Therefore, the first terminal60of the quick pluggable terminal and the second terminal50of the quick pluggable terminal should be used together, that is, one terminal of the quick pluggable terminal is a male terminal, and the other terminal of the quick pluggable terminal is a female terminal. Types of the first terminal60and the second terminal50of the quick pluggable terminal are not limited herein, and may be determined according to specific circumstances, but all of which will fall within the protection scope of the present disclosure.

A stacking power supply cabinet is provided according to an embodiment of the present disclosure. Referring toFIGS. 4aand 4b, the stacking power supply cabinet includes: a base assembly20, a battery management module30functioned as a top assembly and at least one battery module40.

If the number of the battery module40is more than one in the stacking power supply cabinet, multiple battery modules40are sequentially stacked from top to bottom. The base assembly20, the battery management module30and the multiple battery modules40are respectively provided with a power transmission line200and a signal transmission line inside. The power transmission line200in the battery management module30is configured to achieve a short-circuit connection function of the power transmission line200and a connection function with an external device, and configured to connect to an uppermost battery module40. A power transmission line200in the base assembly20is configured to connect to a bottommost battery module40.

Referring toFIGS. 4aand 4b, the internal circuit of the base assembly20includes: a second terminal51of a first quick pluggable terminal, a second terminal52of a second quick pluggable terminal and two power transmission lines200. One of the two power transmission lines200is connected between a first port of the second terminal51of the first quick pluggable terminal and a second port of the second terminal52of the second quick pluggable terminal. Another one of the two power transmission lines200is connected between a second port of the second terminal51of the first quick pluggable terminal and a first port of the second terminal52of the second quick pluggable terminal.

The internal circuit of each battery module40includes five power transmission lines200, that is, a first power transmission line200, a second power transmission line200, a third power transmission line200, a fourth power transmission line200and a fifth power transmission line200. The first power transmission line200is connected to a positive electrode B+ of the battery module40where the first power transmission line200is located, and is led out from a first port of a second terminal51of a first quick pluggable terminal on an upper surface of the battery module40. The second power transmission line200is connected to a negative electrode B− of the battery module40, and is led out from a first port of a first terminal61of the first quick pluggable terminal on a lower surface of the battery module40. The third power transmission line200is connected between a second port of the second terminal51of the first quick pluggable terminal and a second port of the first terminal61of the first quick pluggable terminal. The fourth power transmission line200is connected between a first port of a second terminal52of a second quick pluggable terminal on the upper surface of the battery module40and a first port of a first terminal62of the second quick pluggable terminal on the lower surface of the battery module40. The fifth power transmission line400is connected between a second port of the second terminal52of the second quick pluggable terminal and a second port of the first terminal62of the second quick pluggable terminal.

Referring toFIGS. 4aand 4b, the internal circuit of the battery management module30includes: a breaker33, a first terminal61of a first quick pluggable terminal, a first terminal62of a second quick pluggable terminal, a positive connector31of an energy storage device, a negative connector32of an energy storage device, and five power transmission lines200. Two of the five power transmission lines200are led out from a first end of the breaker33, pass through the first terminal60of the first quick pluggable terminal and all the battery modules400, and connect to the second terminal51of the first quick pluggable terminal of the base assembly20. Another two of the five power transmission lines200are led out from a second end of the breaker33, and are connected to an inner terminal of the positive connector31of the energy storage device and an inner terminal of the negative connector32of the energy storage device respectively. The outer terminal of the positive connector31of the energy storage device and the outer terminal of the negative connector32of the energy storage device are respectively used to connect an external device. A last one of the five power transmission lines200is arranged inside the first terminal62of the second quick pluggable terminal of the battery management module30. Two ends of the last one of the five power transmission lines200are led out from the first port and the second port of the first terminal62of the second quick pluggable terminal respectively, pass through all battery modules40, and are connected to the second terminal52of the second quick pluggable terminal of the base assembly20.

From the above detailed description of components of the stacking power supply cabinet, it can be seen that the stacking power supply cabinet with the internal circuit structure shown inFIGS. 4aand 4bmay be functioned as an energy storage machine to satisfy requirements of energy storage of an external device. In practical applications, the stacking power supply cabinet may adopt another internal circuit structure and also be functioned as a charging device, and an internal circuit structure thereof is described in details hereinafter.

In the stacking power supply cabinet, internal circuit structures of the base assembly20and each battery module40are similar to those of the stacking power supply cabinet as shown inFIGS. 4aand 4b, which will not be described again herein for simplicity.

Referring toFIG. 10, the internal circuit structure of the battery management module30, based on the structure as shown inFIGS. 4aand 4b, further includes: a DC/DC module11, a positive connector12of a charging device, a negative connector13of a charging device, and additional two power transmission lines200. The additional two first power transmission lines200connect the first end of the breaker33to a side of the DC/DC module11. Another side of the DC/DC module11is connected to an inner terminal of the positive connector12of the charging device and an inner terminal of the negative connector13of the charging device. An outer terminal of the positive connector12of the charging device and an outer terminal of the negative connector13of the charging device are connected to an external device.

The arrangement of the second terminals and the first terminals of connecting devices on each component in the stacking power supply cabinet according to this embodiment, and the installation method between each component are similar to those described in the aforementioned embodiments, which will not be described herein for simplicity.

Each battery module40in the embodiments includes: a battery management system (BMS), a quick pluggable connector, and at least one battery cell. Positive electrodes of all the battery cells in the battery module are connected in series to form a positive electrode B+of the battery module40, and negative electrodes of all the battery cells in the battery module are connected in series to form a negative electrode B− of the battery module40. The BMS is connected to all the battery cells in the battery module, and is connected to a signal transmission line inside the battery module40where the BMS is located.

The quick pluggable connector includes at least one pair of quick pluggable terminals, and each pair of quick pluggable terminals includes a second terminal50arranged on an upper surface of the battery module40and a first terminal60arranged on a lower surface of the battery module40, for leading out corresponding power transmission lines200. The quick pluggable connector in each battery module40in the stacking power supply cabinet as shown inFIGS. 3aand 3bincludes one pair of quick pluggable terminals, and each of the pair of the quick pluggable terminals includes two ports. The quick pluggable connector in each battery module40in the stacking power supply cabinet as shown inFIGS. 6aand 6bincludes one pair of quick pluggable terminals, and each of the pair of the quick pluggable terminals includes four ports. The quick pluggable connector in each battery module40in the stacking power supply cabinet as shown inFIGS. 4aand 4bincludes two pairs of quick pluggable terminals, and each of the two pairs of the quick pluggable terminals includes two ports.

It should be noted that, in the aforementioned embodiments, the first terminal60of the quick pluggable terminal may be a male terminal of the quick pluggable terminal or a female terminal of the quick pluggable terminal, which is not limited herein; and the second terminal of the quick pluggable terminal is in the same case. It should be noted that, in the aforementioned embodiments, the electrical connection between corresponding two parts is established through the first terminal60of the quick pluggable terminal and the second terminal50of the quick pluggable terminal. Therefore, the first terminal60of the quick pluggable terminal and the second terminal50of the quick pluggable terminal should be used together, that is, one terminal of the quick pluggable terminal is a male terminal, and the other terminal of the quick pluggable terminal is a female terminal. Types of the first terminal60and the second terminal50of the quick pluggable terminal are not limited herein, and may be determined according to specific circumstances, but all of which will fall within the protection scope of the present disclosure.

The above embodiments in the present disclosure are described in a progressive manner. Each of the embodiments is mainly focused on describing its differences from other embodiments, and references may be made among these embodiments with respect to the same or similar portions among these embodiments. Descriptions of the apparatus disclosed in the embodiments are simple since the apparatus corresponds to the method disclosed in the embodiments, and related explanations can be found in descriptions of the method.

The above embodiments are preferred embodiments of the present disclosure and are not intended to limit the scope of the present disclosure. It should be understood that, for those skilled in the art, alternations, modifications or equivalent substitutions may be made to the technical solutions of the present disclosure according to the methods and technical solutions above without departing from the scope of the technical solutions of the present disclosure. These alternations, modifications or equivalent substitutions made according to the technical essence of the present disclosure fall within the protection scope of the present disclosure.