WO2024109255A1

WO2024109255A1 - Battery module

Info

Publication number: WO2024109255A1
Application number: PCT/CN2023/117211
Authority: WO
Inventors: 宗彦震
Original assignee: 珠海冠宇电源有限公司
Priority date: 2022-11-25
Filing date: 2023-09-06
Publication date: 2024-05-30
Also published as: CN219106259U

Abstract

A battery module. The battery module comprises a battery and a protection module. The battery comprises a housing and a pole column. The pole column is arranged in the housing. The housing is provided with a recess. The recess and the pole column are arranged with a gap between same. There are a plurality of batteries. The plurality of batteries are arranged side by side. The protection module comprises a collection circuit board and an adapter piece. The collection circuit board and the adapter piece are electrically connected. At least part of the collection circuit board is located in the recess. And the collection circuit board is electrically connected to the pole column by means of the adapter piece.

Description

Battery Module

This application claims priority to the Chinese patent application filed with the China Patent Office on November 25, 2022, with application number 202223164195.2 and application name “Battery Module”, all contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of battery technology, and in particular to a battery module.

Background technique

As the level of electronic products becomes more intelligent, the power consumption of electronic products is also increasing. Users have higher requirements for battery life and charging speed. Fast charging batteries have become one of the main development directions of consumer batteries. Therefore, the battery needs to have a higher capacity and also needs to meet the requirements of faster charging.

Multiple batteries can be connected in series or in parallel to form a battery module, which can provide power for electronic products. Batteries are usually equipped with a protection module. The protection module can collect information such as the voltage and temperature of the battery, so as to provide protection for the battery cell during charging or discharging, avoiding problems such as overcharging, over-discharging, overcurrent, short circuit, and ultra-high temperature charging and discharging. In the related art, the protection module occupies a large internal space of the battery module, so the energy density of the battery module is low.

Summary of the invention

The present application provides a battery module, which can solve the problem that the protection module occupies a large space and causes the energy density of the battery module to be low.

The present application provides a battery module, which includes:

A battery comprises a shell and a pole, wherein the pole is arranged in the shell, the shell is provided with a recess, the recess is spaced apart from the pole, and the number of batteries is multiple, and the multiple batteries are arranged side by side;

The protection module comprises a collection circuit board and an adapter, the collection circuit board and the adapter are electrically connected, at least part of the collection circuit board is located in the recess, and the collection circuit board is electrically connected to the pole through the adapter.

The battery module provided by the present application can, on the one hand, adaptively increase the size of the battery cell while keeping the overall size of the battery module unchanged, which is beneficial to improving the energy density of the battery module; on the other hand, When the size of the battery cell remains unchanged, the external space occupied by the protection module can be effectively reduced, which is beneficial to reducing the overall size of the battery module and improving the portability of the battery module.

According to one embodiment of the present application, the battery comprises two poles with opposite polarities, and a recess is arranged between the two poles. The battery comprises two poles with opposite polarities, and the two poles are located on the same side of the recess; or, the two poles are arranged between the two recesses.

According to one embodiment of the present application, two batteries are arranged side by side along the length direction of the battery, and the pole of one battery is arranged facing the pole of the other battery.

According to one embodiment of the present application, there is a gap between the two shells, and the protection module also includes a flexible connector. Along the width direction of the battery, the two collection circuit boards spaced apart are connected by the flexible connector, and the flexible connector is located in the gap.

According to an embodiment of the present application, the number of the acquisition circuit boards is set in one-to-one correspondence with the number of the recesses. The protection module further includes a flexible connector, and two adjacent acquisition circuit boards are connected via the flexible connector.

According to an embodiment of the present application, two adjacent acquisition circuit boards are respectively located on two sides of the flexible connector.

According to one embodiment of the present application, multiple batteries are arranged side by side along the width direction of the battery, and along the length direction of the battery, the recesses of the multiple batteries are located on the same side. The protection module also includes a flexible connector, and along the width direction, two adjacent collection circuit boards arranged at intervals are connected via the flexible connector.

According to one embodiment of the present application, a plurality of batteries are arranged side by side along the thickness direction of the battery, and in two adjacent batteries, the recess of one battery is arranged to correspond to the recess of the other battery.

According to an embodiment of the present application, the protection module further includes a flexible connector, and along the length direction of the battery, the collection circuit board is protrudingly disposed on a surface of the flexible connector facing the recess.

According to one embodiment of the present application, the surface of the acquisition circuit board facing away from the recess is flush with the surface of the flexible connector facing away from the battery, and along the thickness direction of the battery, the orthographic projection of the acquisition circuit board is located inside the orthographic projection of the housing.

According to an embodiment of the present application, along the length direction, the orthographic projection of the flexible connector is located inside the orthographic projection of the housing.

According to an embodiment of the present application, the flexible connector is insulated from the housing.

According to an embodiment of the present application, the protection module further includes a flexible connector and an output interface, and the output interface is connected to one of the acquisition circuit boards via the flexible connector.

According to one embodiment of the present application, the battery module includes an insulating connector, and two adjacent batteries are connected by the insulating connector, and the insulating connector wraps the gap, the flexible connecting plate and the collection circuit board.

According to one embodiment of the present application, the battery module further includes an insulating member, and the insulating member is located in the recess. The insulating member is arranged between the collection circuit board and the battery; and/or,

The battery module also includes thermally conductive adhesive, which connects the collection circuit board and the battery.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

FIG1 is a schematic diagram of a partial structure of a battery according to an embodiment of the related art;

FIG2 is a schematic diagram of a partial structure of a battery according to an embodiment of the present application;

FIG3 is a schematic diagram of a partial structure of a battery according to another embodiment of the present application;

FIG4 is a schematic diagram of a partial structure of a battery according to another embodiment of the present application;

FIG5 is a schematic structural diagram of a battery module according to an embodiment of the present application;

FIG6 is an enlarged schematic diagram of point A in FIG5 ;

FIG7 is a schematic diagram of the exploded structure of a battery module according to another embodiment of the present application;

FIG8 is a schematic structural diagram of a battery module according to another embodiment of the present application;

FIG9 is a schematic structural diagram of a battery module according to another embodiment of the present application;

FIG10 is an enlarged schematic diagram of point B in FIG7;

FIG. 11 is a schematic structural diagram of a battery module according to yet another embodiment of the present application.

Description of reference numerals:
100, battery module; 100a, accommodation space;
110. Battery;
111, housing; 111a, recess;
1111, housing; 11111, bottom plate; 11112, side plate;
1112, cover body;
1113, flanging;
112. Pole;
113. Battery cell;
1131, ear;
120. Protection module;
121. Collect circuit boards;
122. Adapter;
123. Flexible connector;
124. Output interface;
130. Insulating connectors;
200. Battery;
210, battery cell; 211, tab;
220, housing;
230, pole; 231, internal adapter; 232, external connector;
X, length direction; Y, width direction; Z, thickness direction.

The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

The battery 110 of the embodiment of the present application may include a lithium ion secondary battery, a lithium sulfur battery or a sodium lithium ion battery, etc., which is not limited in the present application. The battery 110 is generally divided into a square battery and a soft pack battery according to the packaging method. The battery 110 of the present application may be a square battery.

The battery module 100 of the present application can provide energy for vehicles, ships, small aircraft and other equipment. Taking a vehicle as an example, the vehicle of the present application can be a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.

The battery 110 can be used as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle. For example, the battery 110 provides electrical energy for the drive motor. The drive motor is connected to the wheels on the vehicle through a transmission mechanism to drive the vehicle to move. Specifically, the battery 110 can be horizontally arranged at the bottom of the vehicle.

The battery 110 is provided with a protection module 120. The protection module 120 is connected to the battery 110. The protection module 120 can collect information such as the voltage and temperature of the battery 110, so as to provide protection for the battery cell 113 during the charging or discharging process, and avoid problems such as overcharging, overdischarging, overcurrent, short circuit, and ultra-high temperature charging and discharging.

However, in the related art, the protection module occupies a large space, which easily affects the size of the battery cell 210, thereby resulting in a phenomenon in which the energy density of the battery module is reduced.

As shown in FIG. 1 , a battery 200 generally includes a battery cell 210, a housing 220, and a pole 230. The battery cell 210 is located at The battery cell 210 may be provided with a tab 211 at one end thereof. The pole 230 may include an internal adapter 231 and an external connector 232. The internal adapter 231 is located inside the housing 220 to be connected to the tab 211. The external connector 232 is located outside the housing 220 to be connected to an external circuit. Along the thickness direction of the housing 220, the internal adapter 231 and the external connector 232 may be arranged opposite to each other.

It should be noted that there may be two poles 230. The internal adapter 231 and the external connector 232 of the two poles 230 may be insulated and isolated from the housing 220 to reduce the possibility of a short circuit in the battery 200.

The tabs 211 and the internal adapter 231 usually only occupy part of the space in the housing 220, and in the protection module, the collection circuit board occupies the main space of the protection module. Therefore, the applicant has found that if the space on the battery 200 where the tabs 211 and the internal adapter 231 are not provided can be reasonably utilized so that it can accommodate part of the collection circuit board, it will be beneficial to improve the energy density of the battery module.

In the present application, referring to FIGS. 2 to 4 , the applicant has provided a recess 111a at a position where the tab 211 and the internal adapter 231 are not provided on the housing 220. The opening of the recess 111a faces outward. At least part of the acquisition circuit board 121 can be located in the recess 111a to reduce the space of the battery module 100 occupied by the acquisition circuit board. Thus, while the overall size of the battery module 100 remains unchanged, the size of the battery cell can be adaptively increased, which is beneficial to improving the energy density of the battery module 100.

In addition, when the size of the battery cell 113 remains unchanged, the possibility of the protection module occupying the external space can be effectively reduced, which is beneficial to reducing the overall size of the battery module 100 and improving the portability of the battery module 100.

The battery module 100 provided in the present application is further described below in conjunction with specific embodiments.

2 to 11 , the battery module 100 according to the embodiment of the present application includes a battery 110 and a protection module 120 .

The battery 110 includes a housing 111 and a pole 112. The pole 112 is disposed on the housing 111. The housing 111 is provided with a recess 111a. The recess 111a is spaced apart from the pole 112. There are a plurality of batteries 110. The plurality of batteries 110 are arranged side by side.

The protection module 120 includes a collection circuit board 121 and an adapter plate 122. The collection circuit board 121 and the adapter plate 122 are electrically connected. At least part of the collection circuit board 121 is located in the recess 111a. The collection circuit board 121 is electrically connected to the pole 112 through the adapter plate 122.

At least part of the acquisition circuit board 121 of the embodiment of the present application is located in the recess 111a, which can reduce the effective space occupied by the acquisition circuit board 121. It should be noted that the effective space refers to the space that affects the size of the battery cell 113. The recess 111a of the present application is set in the area where the pole ear 1131 and the pole 112 are not set on the shell 111, and does not affect the size of the battery cell 113. Therefore, the acquisition circuit board 121 of the present application is located in the recess 111a and is not easy to occupy More effective space.

In summary, the embodiments of the present application can, on the one hand, adaptively increase the size of the battery cell 113 while keeping the overall size of the battery module 100 unchanged, which is beneficial to improving the energy density of the battery module 100; on the other hand, while keeping the size of the battery cell 113 unchanged, it can effectively reduce the possibility of the protection module 120 occupying the effective space, which is beneficial to reducing the overall size of the battery module 100 and improving the portability of the battery module 100.

In some examples, referring to FIGS. 5 to 9 , one or more acquisition circuit boards 121 may be disposed in a recess 111 a of an embodiment of the present application; or, when a recess 111 a of one battery 110 is disposed opposite to a recess 111 a of another battery 110 , a acquisition circuit board 121 may be disposed in both recesses 111 a .

In some examples, a battery cell 113 is disposed inside the battery 110. The battery cell 113 may be a wound battery cell 113 or a laminated battery cell 113, which is not limited in the present application.

In some achievable ways, as shown in FIG5 and FIG6 , the number of the acquisition circuit boards 121 and the number of the recesses 111 a in the embodiment of the present application are arranged one-to-one. The protection module 120 may further include a flexible connector 123. The two acquisition circuit boards 121 are electrically connected via the flexible connector 123.

In some examples, a collection circuit board 121 may be correspondingly disposed in each recess 111a. That is, each battery 110 may be configured with at least one collection circuit board 121. When there are multiple collection circuit boards 121, the multiple collection circuit boards 121 may shunt the current, so that the multiple collection circuit boards 121 may disperse the heat generated by the current to different positions of the battery module 100, which is helpful to reduce the possibility of local over-temperature affecting the working performance.

In some examples, when there are multiple acquisition circuit boards 121 , two adjacent acquisition circuit boards 121 may be electrically connected via a flexible connector 123 .

In some examples, the flexible connector 123 may be a flexible circuit board, or the flexible connector 123 may also be made of a conductive metal material. For example, the conductive metal material may be copper.

It should be noted that when the flexible connector 123 is made of a conductive metal material, the flexible connector 123 and the adapter 122 as well as the flexible connector 123 and the housing 111 need to be insulated to reduce the possibility of a short circuit in the battery 110 .

In some examples, along the length direction X, two adjacent acquisition circuit boards 121 may be located on two sides of the flexible connector 123 , respectively.

In some achievable embodiments, as shown in FIG2 , the battery 110 of the embodiment of the present application includes two poles 112 with opposite polarities. A recess 111 a is provided between the two poles 112 .

In some examples, at least one recess 111a may be provided between two poles 112. At least a portion of the plate 121 is located within the recess 111 a .

In some achievable embodiments, as shown in Fig. 3 and Fig. 4 , the battery 110 includes two poles 112 with opposite polarities. The two poles 112 may be located on the same side of the recess 111a; or, the two poles 112 may also be disposed between the two recesses 111a.

In some examples, the number of the recess 111a may be one. The two poles 112 may be located on the same side of the recess 111a. Alternatively, the number of the recess 111a may be multiple. A pole 112 may be disposed between two adjacent recesses 111a.

In some achievable embodiments, as shown in FIG. 4 to FIG. 6 , along the length direction X of the battery 110 , two batteries 110 are arranged side by side, and the pole 112 of one battery 110 is arranged facing the pole 112 of the other battery 110 .

In some examples, the pole 112 may be disposed at one end of the housing 111 along the length direction X. The recess 111a of one battery 110 may be disposed opposite to the recess 111a of another battery 110 to form a receiving space 100a. The number of the acquisition circuit board 121 disposed in each receiving space 100a may be at least one.

In some examples, a plurality of collecting circuit boards 121 in the same accommodation space 100a may be connected by a flexible connector 123. Along the width direction Y, the collecting circuit boards 121 in two adjacent recesses 111a may be connected by a flexible connector 123.

In some examples, the battery 110 may be provided with two recesses 111a. The two recesses 111a are arranged at intervals along the width direction Y of the battery 110. The two recesses 111a may be arranged at both ends of the width direction Y. The number of recesses 111a and the number of acquisition circuit boards 121 may correspond one to one. That is, in this embodiment, when two batteries 110 are arranged side by side along the length direction X, the number of acquisition circuit boards 121 may be four.

Since the acquisition circuit board 121 in the protection module 120 occupies a large space, and the acquisition circuit board 121 in the embodiment of the present application can be located in the accommodating space 100a, the effective space occupied by the acquisition circuit board 121 in the battery module 100 can be effectively reduced, which is beneficial to improving the energy density of the battery module 100.

In addition, a plurality of acquisition circuit boards 121 may be distributed in the recesses 111a at different positions, so that the current can be shunted to reduce the possibility that the local current of the acquisition component is large and the local temperature is too high, which affects the working performance.

In some examples, along the width direction Y, the adapter plate 122 may be disposed at one end of the collection circuit board 121 facing the pole 112. The adapter plate 122 may be disposed in a one-to-one correspondence with the pole 112.

For example, referring to FIG. 5 and FIG. 6 , along the width direction Y, an adapter sheet 122 may be provided at one end of the collection circuit board 121 facing the pole 112 .

In some examples, the transfer sheet 122 may be conductive. For example, the transfer sheet 122 may be a nickel sheet.

In some achievable embodiments, as shown in FIG6 , there is a gap t between the two housings 111 of the embodiment of the present application along the length direction X. Along the width direction Y of the battery 110, the two spaced collection circuit boards 121 are connected by a flexible connector 123. The flexible connector 123 is located in the gap.

In some examples, along the length direction X, the flexible connector 123 and the adapter 122 may be insulated from each other, thereby reducing the possibility of the flexible connector 123 contacting the adapter 122 and causing a short circuit in the battery 110 .

In some examples, along the length direction X, the flexible connector 123 may be located between two adapter sheets 122 .

In some examples, along the length direction X, a gap t may be provided between the respective housings 111 of the two batteries 110 to accommodate the flexible connector 123 and the adapter 122 .

In some examples, the thickness of the flexible connector 123 and the thickness of the adapter sheet 122 can be set to be smaller to reduce the occupied effective space.

In some achievable embodiments, as shown in FIG. 2 and FIG. 7 , multiple batteries 110 are arranged side by side along the width direction Y of the battery 110. Along the length direction X of the battery 110, the recesses 111a of the multiple batteries 110 are located on the same side. The opening directions of the recesses 111a of the multiple batteries 110 are the same. Along the width direction Y, two adjacent collection circuit boards 121 arranged at intervals are connected by a flexible connector 123.

In some examples, along the thickness direction Z, the orthographic projection of the acquisition circuit board 121 can be located at the part of the orthographic projection of the housing 111, thereby reducing the effective space occupied by the protection module 120 along the length direction X, which is beneficial to improving the energy density of the battery module 100.

In some examples, the battery 110 may be provided with at least one recess 111 a. Along the width direction Y, each of the recesses 111 a of the plurality of batteries 110 arranged side by side may be provided with a collection circuit board 121. Two adjacent collection circuit boards 121 may be connected by a flexible connector 123.

In some examples, each battery 110 is configured with a collection circuit board 121, and when the collection circuit board 121 is located between two poles 112, a transfer sheet 122 can be provided at both ends of the collection circuit board 121 along the width direction Y to be respectively connected to the poles 112 on both sides of the recess 111a.

In some achievable embodiments, as shown in FIGS. 8 and 9 , a plurality of batteries 110 are arranged side by side along a thickness direction Z of the battery 110 , and in two adjacent batteries 110 , a recess 111 a of one battery 110 is arranged to correspond to a recess 111 a of another battery 110 .

In some examples, the housing 111 may include a shell 1111 and a cover 1112 connected to each other. The shell 1111 may include a bottom plate 11111 and a side plate 11112. The bottom plate 11111 and the side plate 11112 may be jointly arranged to form a space for accommodating the battery cell 113. The pole 112 may be disposed on the side plate 11112. Of two adjacent batteries 110, the bottom plate 11111 of one battery 110 may be connected to the cover 1112 of the other battery 110. Alternatively, the respective bottom plates 11111 of two adjacent batteries 110 may be connected. This is not specifically limited in the embodiments of the present application.

In some examples, the housing 1111 and the cover 1112 may be connected by welding. For example, the housing 1111 and the cover 1112 may be connected by laser welding.

In some examples, the housing 111 of the battery 110 may be made of a metal material. For example, the housing 1111 and the cover 1112 may both be made of stainless steel.

In some examples, along the length direction X of the battery 110, the collection circuit board 121 may be protruding from the surface of the flexible connector 123 facing the recess 111a. The surface of the collection circuit board 121 facing away from the recess 111a and the surface of the flexible connector 123 facing away from the battery 110 may be flush with each other. Along the thickness direction Z, the orthographic projection of the collection circuit board 121 may be located inside the orthographic projection of the housing 111. Along the length direction X, the orthographic projection of the flexible connector 123 is located inside the orthographic projection of the housing 111.

In some achievable embodiments, as shown in FIG. 9 , the housing 111 of the embodiment of the present application includes a flange 1113. Along the thickness direction Z of the battery 110, the pole 112 is disposed on one side of the flange 1113. Along the thickness direction Z, in two adjacent batteries 110, the flanges 1113 of each are located on both sides of the flexible connector 123, respectively.

In some examples, the flange 1113 may be disposed on the side of the side plate 11112 facing away from the bottom plate 11111. Along the thickness direction Z, the orthographic projection of the outer contour of the flange 1113 may exceed the orthographic projection of the outer contour of the bottom plate 11111. The flange 1113 may be used to connect the housing 1111 and the cover 1112 to increase the contact area between the housing 1111 and the cover 1112, thereby facilitating improving the connection reliability between the two.

In some examples, as shown in FIG. 7 and FIG. 10 , when a plurality of batteries 110 are arranged side by side along the width direction Y, the flange 1113 of one battery 110 of two adjacent batteries 110 may be connected to the side plate 11112 of the other battery 110. The flange 1113 of one battery 110 and the flange 1113 of another battery 110 may be arranged opposite to each other along the thickness direction Z. In other words, along the thickness direction Z, the orthographic projection of the flange 1113 of one battery 110 and the orthographic projection of the flange 1113 of another battery 110 of two adjacent batteries 110 have an overlapping area.

The overall width of two adjacent batteries 110 arranged side by side in the embodiment of the present application is less than the sum of the widths of the two batteries 110, so that on the one hand, the size of the battery module 100 can be reduced along the width direction Y, which is conducive to improving the portability of the battery module 100. On the other hand, when the battery module 100 is constant, the width of the battery cell 113 can be increased accordingly, so that the energy density of the battery module 100 can be improved.

In some examples, as shown in FIG. 8 , multiple batteries 110 may be arranged side by side along the thickness direction Z. When the bottom plate 11111 of one battery 110 is connected to the cover 1112 of another battery 110, the multiple recesses 111a of the multiple batteries 110 may be separated by their respective flanges 1113 along the thickness direction Z. Two adjacent collection circuit boards 121 along the thickness direction Z may be connected by a flexible connector 123. The flexible connector 123 led out from one collection circuit board 121 may cross the flange 1113 and the cover 1112 to connect to another collection circuit board 121.

In some examples, as shown in FIG. 9 , in two adjacent batteries 110 , the bottom plate of one battery 110 11111 is connected to the bottom plate 11111 of another battery 110. The recess 111a of one battery 110 and the recess 111a of another battery 110 may be arranged correspondingly, so that the recess 111a of one battery 110 and the recess 111a of another battery 110 may be communicated with each other to form an accommodation space 100a.

In some examples, when the battery 110 is provided with a recess 111 a, two adjacent batteries 110 may be provided with a collection circuit board 121. The collection circuit board 121 may be located in the accommodation space 100 a. Along the thickness direction Z, the protection module 120 may be located between the two covers 1112 .

In some examples, the acquisition circuit board 121, the flexible connector 123 and the adapter plate 122 can all be located on the inner side of the outer contour of the cover body 1112, thereby reducing the effective space occupied by the acquisition circuit board 121, the flexible connector 123 and the adapter plate 122 in the battery module 100.

In some examples, along the width direction Y, one end of the acquisition circuit board 121 may be provided with an adapter plate 122, and one adapter plate 122 may be connected to the two poles 112 of the two batteries 110 at the same time; the other end of the acquisition circuit board 121 may be provided with two adapter plates 122, and the two adapter plates 122 may be connected to the two poles 112 of the two batteries 110 respectively.

In some achievable embodiments, as shown in FIG. 5 to FIG. 9 , the protection module 120 further includes an output interface 124 . The output interface 124 is connected to one of the acquisition circuit boards 121 via a flexible connector 123 .

The output interface 124 of the embodiment of the present application can be used to connect to an external host terminal. The output interface 124 can transmit data information collected by the battery 110 to the host terminal. The user can view the status of the battery 110 through the host terminal.

In some examples, the output interface 124 may be located outside the battery module 100 .

In some achievable embodiments, as shown in FIG10 , the battery module 100 includes an insulating connector 130 . Two adjacent batteries 110 are connected via the insulating connector 130 .

When the two batteries 110 are arranged side by side along the length direction X, the pole 112 of one battery 110 is arranged facing the pole 112 of the other battery 110. A portion of the insulating connector 130 may cover the outer shell 111 of one of the batteries 110, and another portion may cover the outer shell 111 of the other battery 110, so that the two batteries 110 can be fixedly connected.

In some examples, along the length direction X, the collection circuit board 121, the flexible connector 123 and the adapter 122 between the two batteries 110 can all be located inside the insulating connector 130, thereby reducing the possibility of dust accumulation on the collection circuit board 121 and affecting working performance.

In some examples, the insulating connector 130 may be an insulating tape with adhesive on one side.

In some achievable embodiments, the battery module 100 further includes an insulating member (not shown in the figure). The insulating member is located in the recess 111 a and is disposed between the collection circuit board 121 and the battery 110 .

The insulating member of the embodiment of the present application can insulate and isolate the acquisition circuit board 121 from the battery 111. This can reduce the possibility of a short circuit caused by the connection between the acquisition circuit board 121 and the battery 110.

In some examples, the material of the insulating member may be PI (Polyimide).

In some examples, the number of insulating members may be multiple. The battery module 100 may also include multiple heat conducting sheets (not shown in the figure). The heat conducting sheets can conduct away the heat generated during the operation of the collection circuit board 121, reducing the possibility of failure caused by excessive temperature of the collection circuit board 121. Exemplarily, the heat conducting sheets and the insulating members may be alternately stacked.

In some examples, the heat conductive sheet may be made of a silicone material having thermal conductivity.

In some achievable embodiments, the battery module 100 further includes a thermally conductive adhesive (not shown in the figure) that connects the collection circuit board 121 and the battery 110 .

The thermal conductive adhesive of the embodiment of the present application can connect the collection circuit board 121 and the battery 110 on the one hand, and can also disperse the heat generated by the collection circuit board 121 on the other hand.

In some examples, the thermally conductive adhesive may be located in the recess 111a to reduce the possibility that the thermally conductive adhesive occupies effective space and causes a decrease in the energy density of the battery module 100. For example, the thermally conductive adhesive may be disposed between the collection circuit board 121 and the side wall of the recess 111a.

In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, product, or apparatus.

The term "plurality" as used herein refers to two or more than two. The term "and/or" as used herein refers only to It is a type of relationship that describes the relationship between related objects, indicating that there can be three types of relationships. For example, A and/or B can represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the related objects are in an "or"relationship; in a formula, the character "/" indicates that the related objects are in a "division" relationship.

It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

A battery module, characterized in that it comprises:

A battery, comprising a shell and a pole, wherein the pole is arranged in the shell, the shell is provided with a recess, the recess is spaced apart from the pole, the number of the battery is multiple, and the multiple batteries are arranged side by side;

The protection module comprises a collection circuit board and an adapter plate, wherein the collection circuit board and the adapter plate are electrically connected, at least a portion of the collection circuit board is located in the recess, and the collection circuit board is electrically connected to the pole through the adapter plate.
The battery module according to claim 1, characterized in that the battery comprises two poles with opposite polarities, and the recess is provided between the two poles;

Alternatively, the battery comprises two poles with opposite polarities, and the two poles are located on the same side of the recess;

Alternatively, the battery comprises two poles with opposite polarities, and the two poles are arranged between the two recesses.
The battery module according to claim 1 is characterized in that, along the length direction of the battery, the two batteries are arranged side by side, and the pole of one battery is arranged facing the pole of the other battery.
The battery module according to claim 3 is characterized in that there is a gap between the two shells, and the protection module also includes a flexible connector, and the two collection circuit boards spaced apart along the width direction of the battery are connected by the flexible connector, and the flexible connector is located in the gap.
The battery module according to claim 4 is characterized in that the number of the acquisition circuit boards is arranged in a one-to-one correspondence with the number of the recesses, and the protection module further includes a flexible connector, and two adjacent acquisition circuit boards are connected by the flexible connector.
The battery module according to claim 5 is characterized in that, along the length direction, two adjacent acquisition circuit boards are respectively located on both sides of the flexible connector.
The battery module according to claim 1 is characterized in that, along the width direction of the battery, the plurality of batteries are arranged side by side, along the length direction of the battery, the respective recesses of the plurality of batteries are located on the same side, and the protection module further comprises a flexible connector, and along the width direction, two adjacent collection circuit boards spaced apart are connected via the flexible connector.
The battery module according to claim 1 is characterized in that, along the thickness direction of the battery, a plurality of the batteries are arranged side by side, and in two adjacent batteries, the recess of one battery is arranged corresponding to the recess of the other battery.
The battery module according to claim 7 or 8 is characterized in that the protection module also includes a flexible connector, and along the length direction of the battery, the collection circuit board is protrudingly arranged on a surface of the flexible connector facing the recess.
The battery module according to claim 9 is characterized in that the surface of the acquisition circuit board facing away from the recess is flush with the surface of the flexible connector facing away from the battery, and along the thickness direction of the battery, the orthographic projection of the acquisition circuit board is located inside the orthographic projection of the outer shell.
The battery module according to claim 10, characterized in that, along the length direction, the orthographic projection of the flexible connector is located inside the orthographic projection of the housing.
The battery module according to claim 6 or 10, characterized in that the flexible connector is insulated from the shell.
The battery module according to claim 1 is characterized in that the protection module also includes a flexible connector and an output interface, and the output interface is connected to one of the acquisition circuit boards through the flexible connector.
The battery module according to claim 4 is characterized in that the battery module includes an insulating connector, two adjacent batteries are connected by the insulating connector, and the insulating connector wraps the gap, the flexible connecting plate and the collection circuit board.
The battery module according to claim 4, characterized in that the battery module further comprises an insulating member, the insulating member is located in the recess, and the insulating member is arranged between the acquisition circuit board and the battery; and/or,

The battery module also includes a thermally conductive adhesive, which connects the acquisition circuit board and the battery.