CN219106259U

CN219106259U - Battery module

Info

Publication number: CN219106259U
Application number: CN202223164195.2U
Authority: CN
Inventors: 宗彦震
Original assignee: Zhuhai Cosmx Power Co Ltd
Current assignee: Zhuhai Cosmx Power Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-05-30
Anticipated expiration: 2032-11-25
Also published as: WO2024109255A1

Abstract

The application provides a battery module. The battery module includes a battery and a protection module. The battery includes a housing and a post. The pole is arranged on the shell. The housing is provided with a recess. The concave part is arranged at intervals with the pole. The number of batteries is plural. The plurality of cells are arranged side by side. The protection module comprises a collection circuit board and a switching sheet. The acquisition circuit board is electrically connected with the switching piece. At least a portion of the acquisition circuit board is positioned within the recess. The acquisition circuit board is electrically connected with the pole through the switching piece. The battery module can solve the problem that the protection module occupies a large space to cause low energy density of the battery module.

Description

Battery module

Technical Field

The application relates to the technical field of batteries, in particular to a battery module.

Background

Along with the improvement of the intelligent level of the electronic products, the power consumption of the electronic products is also increased. The user puts higher demands on the time of battery use and the charging speed. Fast-charging batteries have become one of the most dominant developments in consumer batteries. Therefore, batteries are required to have higher capacities, while also meeting the requirements for faster charging.

The plurality of batteries may be connected in series or in parallel to form a battery module, so that electric power may be supplied to the electronic product. The battery is typically provided with a protection module. The protection module can collect information such as voltage and temperature of the battery, so that protection can be provided for the battery core in the charging or discharging process, and the problems of overcharge, overdischarge, overcurrent, short circuit, superhigh temperature charging and discharging and the like are avoided. In the related art, the protection module occupies a large internal space of the battery module, so that the energy density of the battery module is low.

Disclosure of Invention

The application provides a battery module, can solve the protection module and occupy great space and lead to battery module's energy density low problem.

The application provides a battery module, it includes:

the battery comprises a shell and a pole, wherein the pole is arranged on the shell, the shell is provided with a concave part, the concave part and the pole are arranged at intervals, the number of the batteries is multiple, and the batteries are arranged side by side;

the protection module comprises a collection circuit board and a switching piece, wherein the collection circuit board is electrically connected with the switching piece, at least part of the collection circuit board is positioned in the concave part, and the collection circuit board is electrically connected with the pole through the switching piece.

According to the battery module, on one hand, the size of the battery core can be increased adaptively under the condition that the overall size of the battery module is kept unchanged, and the energy density of the battery module is improved; on the other hand, under the condition that the size of the battery cell is kept unchanged, the external space occupied by the protection module can be effectively reduced, so that the overall size of the battery module is reduced, and the portability of the battery module is improved.

According to one embodiment of the application, the battery comprises two poles of opposite polarity, between which a recess is provided. The battery comprises two polar posts with opposite polarities, and the two polar posts are positioned on the same side of the concave part; alternatively, two poles are provided between the two recesses.

According to one embodiment of the present application, two cells are arranged side by side along the length of the cells, and the pole faces of one cell are arranged toward the pole faces of the other cell.

According to an embodiment of the application, a gap is formed between the two shells, the protection module further comprises a flexible connecting piece, the two acquisition circuit boards arranged at intervals are connected through the flexible connecting piece along the width direction of the battery, and the flexible connecting piece is located in the gap.

According to one embodiment of the application, the number of the acquisition circuit boards is arranged in a one-to-one correspondence with the number of the concave parts. The protection module further comprises a flexible connecting piece, and two adjacent acquisition circuit boards are connected through the flexible connecting piece.

According to one embodiment of the application, two adjacent acquisition circuit boards are respectively located at two sides of the flexible connecting piece.

According to an embodiment of the application, along the width direction of battery, a plurality of batteries set up side by side, along the length direction of battery, a plurality of battery respective concave parts are located same one side, and protection module still includes flexible connection spare, along the width direction, two adjacent collection circuit boards that the interval set up link to each other through flexible connection spare.

According to one embodiment of the present application, a plurality of cells are arranged side by side in the thickness direction of the cells, and the concave portion of one cell is arranged corresponding to the concave portion of the other cell in the adjacent two cells.

According to one embodiment of the application, the protection module further comprises a flexible connecting piece, and the collection circuit board is arranged on the surface of the flexible connecting piece facing the concave part in a protruding mode along the length direction of the battery.

According to one embodiment of the application, the surface of the collecting circuit board facing away from the concave part is flush with the surface of the flexible connecting piece facing away from the battery, and the orthographic projection of the collecting circuit board is located inside the orthographic projection of the shell along the thickness direction of the battery.

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

According to one embodiment of the present application, the flexible connection unit is insulated from the housing.

According to one embodiment of the application, the protection module further comprises a flexible connection and an output interface, the output interface being connected with one of the acquisition circuit boards by the flexible connection.

According to an embodiment of the application, the battery module comprises an insulating connecting piece, two adjacent batteries are connected through the insulating connecting piece, and the insulating connecting piece wraps a gap, a flexible connecting plate and a collecting circuit board.

According to one embodiment of the application, the battery module further comprises an insulating piece, wherein the insulating piece is positioned in the concave part, and the insulating piece is arranged between the acquisition circuit board and the battery; and/or the number of the groups of groups,

the battery module further comprises heat-conducting glue, and the heat-conducting glue is connected with the acquisition circuit board and the battery.

Drawings

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

Fig. 1 is a schematic view showing a partial structure of a battery according to an embodiment of the related art;

fig. 2 is a schematic view showing a partial structure of a battery according to an embodiment of the present application;

fig. 3 is a schematic view showing a partial structure of a battery according to another embodiment of the present application;

fig. 4 is a schematic view showing a partial structure of a battery according to still another embodiment of the present application;

fig. 5 is a schematic structural view of a battery module according to an embodiment of the present application;

FIG. 6 is an enlarged schematic view of FIG. 5A;

fig. 7 is an exploded view of a battery module according to another embodiment of the present application;

fig. 8 is a schematic structural view of a battery module according to still another embodiment of the present application;

fig. 9 is a schematic structural view of a battery module according to still another embodiment of the present application;

FIG. 10 is an enlarged schematic view at B in FIG. 7;

fig. 11 is a schematic structural view of a battery module according to still another embodiment of the present application.

Reference numerals illustrate:

100. a battery module; 100a, an accommodating space;

110. a battery;

111. a housing; 111a, a recess;

1111. a housing; 11111. a bottom plate; 11112. a side plate;

1112. a cover body;

1113. flanging;

112. a pole;

113. a battery cell;

1131. tab

120. A protection module;

121. collecting a circuit board;

122. a transfer sheet;

123. a flexible connection member;

124. an output interface;

130. an insulating connector;

200. a battery;

210. a battery cell; 211. a tab;

220. a housing;

230. a pole; 231. an internal adaptor; 232. an external connection;

x, length direction; y, width direction; z, thickness direction.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

The battery 110 of the embodiment of the present application may include a lithium ion secondary battery, a lithium sulfur battery, a sodium lithium ion battery, or the like, and is not limited in this application. The battery 110 is generally divided into a square battery and a pouch battery in a packaged manner, and the battery 110 of the present application may be a square battery.

The battery module 100 of the present application may provide energy for vehicles, ships, mini-planes, etc. Taking a vehicle as an example, the vehicle of the application can be a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile.

The battery 110 may be used as a driving power source for an automobile to supply driving power to the automobile instead of or in part of fuel oil or natural gas. Illustratively, the battery 110 provides electrical power to the drive motor. The driving motor is connected with wheels on the vehicle through a transmission mechanism so as to drive the vehicle to travel. Specifically, the battery 110 may be horizontally disposed at the bottom of the vehicle.

The battery 110 is configured with a protection module 120. The protection module 120 is connected to the battery 110. The protection module 120 can collect information such as voltage and temperature of the battery 110, so as to provide protection for the battery core 113 during charging or discharging, and avoid the problems of overcharge, overdischarge, overcurrent, short circuit, ultra-high temperature charging and discharging, and the like.

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

Referring to fig. 1, a battery 200 generally includes a cell 210, a housing 220, and a post 230. The battery cell 210 is located inside the housing 220. One end of the cell 210 may lead out a tab 211. The pole 230 may include an inner adapter 231 and an outer connector 232. The internal adaptor 231 is located within the housing 220 to connect with the tab 211. An external connector 232 is located outside the housing 220 to connect with external circuitry. The inner adapter 231 and the outer connector 232 may be disposed opposite to each other in the thickness direction of the housing 220.

It should be noted that the number of the poles 230 may be two. The inner adapter 231 and the outer connector 232 of each of the two poles 230 may be insulated from the housing 220 to reduce the possibility of shorting the battery 200.

The tab 211 and the internal adapter 231 generally occupy only a portion of the space within the housing 220, and in the protection module, the acquisition circuit board occupies the main space of the protection module. Accordingly, the applicant has found that it would be advantageous to increase the energy density of the battery module if the space of the battery 200, where the tabs 211 and the internal adapter 231 are not provided, could be reasonably utilized so that it could accommodate a portion of the collecting circuit board.

In this application, referring to fig. 2 to 4, the applicant is provided with the 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 a portion of the collecting circuit board 121 may be positioned in the recess 111a to reduce the space of the battery module 100 occupied by the collecting circuit board. Therefore, the size of the battery cell can be adaptively increased under the condition that the overall size of the battery module 100 is kept unchanged, which is beneficial to improving the energy density of the battery module 100.

In addition, in the case that the size of the battery cells 113 is maintained, the possibility that the protection module occupies the external space can be effectively reduced, thereby being beneficial to reducing the overall size of the battery module 100 to improve the portability of the battery module 100.

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

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

The battery 110 includes a housing 111 and a post 112. The pole 112 is provided to the housing 111. The housing 111 is provided with a recess 111a. The recess 111a is spaced apart from the pole 112. The number of the batteries 110 is plural. The plurality of batteries 110 are arranged side by side.

The protection module 120 includes a collection circuit board 121 and a patch 122. The acquisition circuit board 121 is electrically connected to the transfer sheet 122. At least a portion of the acquisition circuit board 121 is located within the recess 111a. The acquisition circuit board 121 is electrically connected to the pole 112 via the switching piece 122.

At least part of the collection circuit board 121 in the embodiment of the present application is located in the concave portion 111a, so that the effective space occupied by the collection circuit board 121 can be reduced. The effective space is a space affecting the size of the cell 113. The recess 111a of the present application is provided in a region of the case 111 where the tab 1131 and the post 112 are not provided, and does not affect the size of the battery cell 113. Therefore, the collecting circuit board 121 is located in the concave portion 111a, which is not easy to occupy more effective space.

In summary, on the one hand, the embodiment of the present application can adaptively increase the size of the battery core 113 under the condition that the overall size of the battery module 100 remains unchanged, which is beneficial to improving the energy density of the battery module 100; on the other hand, in the case that the size of the battery cells 113 is maintained, the possibility that the protection module 120 occupies an effective space can be effectively reduced, thereby advantageously reducing the overall size of the battery module 100 to improve the portability of the battery module 100.

In some examples, referring to fig. 5-9, one or more acquisition circuit boards 121 may be disposed within one recess 111a of an embodiment of the present application; alternatively, when the recess 111a of one battery 110 is provided opposite to the recess 111a of the other battery 110, one collecting circuit board 121 may be commonly provided in both recesses 111a.

In some examples, the interior of the battery 110 is provided with an electrical cell 113. The battery cell 113 may be a wound battery cell 113 or a laminated battery cell 113, which is not limited in this application.

In some possible implementations, referring to fig. 5 and 6, the collection circuit boards 121 in the embodiments of the present application are disposed in one-to-one correspondence with the number of the concave portions 111a. The protection module 120 may also include a flexible connection 123. The two acquisition circuit boards 121 are electrically connected by a flexible connection 123.

In some examples, one acquisition circuit board 121 may be disposed within each recess 111a. That is, each battery 110 may be configured with at least one acquisition circuit board 121. When the number of the collection circuit boards 121 is plural, the collection circuit boards 121 can shunt the current, so that the collection circuit boards 121 can disperse the heat generated by the current to different positions of the battery module 100, which is beneficial to reducing the possibility of influencing the working performance due to overhigh local temperature.

In some examples, when the number of the collection circuit boards 121 is plural, adjacent two collection circuit boards 121 may be electrically connected by the flexible connection 123.

In some examples, the flexible connector 123 may be a flexible circuit board, or the flexible connector 123 may be made of a metal material having conductivity. Illustratively, the conductive metallic material may be copper.

When the flexible connection member 123 is made of a conductive metal material, insulation is required between the flexible connection member 123 and the adapter plate 122 and between the flexible connection member 123 and the housing 111, so as to reduce the possibility of short circuit of the battery 110.

In some examples, adjacent two acquisition circuit boards 121 may be located on either side of the flexible connection 123 along the length direction X.

In some implementations, referring to fig. 2, the battery 110 of the embodiments of the present application includes two oppositely polarized poles 112. A recess 111a is provided between the two poles 112.

In some examples, at least one recess 111a may be provided between two poles 112. At least part of the collecting circuit board 121 is located in the recess 111a.

In some implementations, referring to fig. 3 and 4, the battery 110 includes two oppositely polarized poles 112. The two poles 112 may be located on the same side of the recess 111 a; alternatively, two poles 112 may be provided between the two recesses 111a.

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

In some implementations, referring to fig. 4-6, the length direction X of the battery 110 is shown. Two cells 110 are arranged side by side, and the post 112 of one cell 110 is arranged facing the post 112 of the other cell 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 and the recess 111a of the other battery 110 may be disposed opposite to each other to form the accommodation space 100a. The number of the collection circuit boards 121 provided in each accommodation space 100a may be at least one.

In some examples, the plurality of collecting circuit boards 121 located in the same receiving space 100a may be connected by a flexible connection 123. In the width direction Y, the pickup circuit boards 121 in the adjacent two concave portions 111a may be connected by a flexible connection 123.

In some examples, the battery 110 may be provided with two recesses 111a. Two concave portions 111a are provided at intervals in the width direction Y of the battery 110. Two concave portions 111a may be provided at both ends in the width direction Y. The number of concave portions 111a and the number of the pickup circuit boards 121 may be one-to-one correspondence. That is, in the present embodiment, when two batteries 110 are arranged in parallel in the longitudinal direction X, the number of the collecting circuit boards 121 may be four.

Because the collection circuit board 121 in the protection module 120 occupies a larger space, and the collection circuit boards 121 in the embodiment of the application can be located in the accommodating space 100a, the effective space of the collection circuit board 121 occupying the battery module 100 can be effectively reduced, thereby being beneficial to improving the energy density of the battery module 100.

In addition, the plurality of acquisition circuit boards 121 can be distributed in the concave parts 111a at different positions, so that current can be split, and the possibility that the local temperature is too high to influence the working performance due to the fact that the local current of the acquisition assembly is large is reduced.

In some examples, in the width direction Y, the transfer tab 122 may be disposed at an end of the acquisition circuit board 121 facing the pole 112. The switching pieces 122 may be disposed in one-to-one correspondence with the poles 112.

For example, referring to fig. 5 and 6, an end of the collecting circuit board 121 facing the pole 112 may be provided with a transfer tab 122 in the width direction Y.

In some examples, the patch 122 may have electrical conductivity. Illustratively, the adapter plate 122 may be a nickel plate.

In some implementations, referring to fig. 6, there is a gap t between two housings 111 of embodiments of the present application along the length direction X. Along the width direction Y of the battery 110, two acquisition circuit boards 121 disposed at intervals are connected by a flexible connection 123. The flexible connection 123 is located in the gap.

In some examples, along the length direction X, the flexible connector 123 and the adapter plate 122 may be disposed in an insulating manner, so that the possibility of the flexible connector 123 contacting the adapter plate 122 and causing a short circuit of the battery 110 may be reduced.

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

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 tab 122.

In some examples, the thickness of the flexible connector 123 and the thickness of the adapter plate 122 may be set smaller to reduce the effective space taken up.

In some implementations, as shown in fig. 2 and 7, a plurality of cells 110 are arranged side by side along the width direction Y of the cells 110. The concave portions 111a of the plurality of batteries 110 are located on the same side in the longitudinal direction X of the batteries 110. The opening directions of the concave portions 111a of the plurality of batteries 110 are the same. Adjacent two of the acquisition circuit boards 121 disposed at intervals in the width direction Y are connected by a flexible connection 123.

In some examples, the orthographic projection of the collecting circuit board 121 may be located at the orthographic projection portion of the housing 111 along the thickness direction Z, so that the effective space occupied by the protection module 120 along the length direction X may be reduced, which is advantageous for improving the energy density of the battery module 100.

In some examples, the battery 110 may be provided with at least one recess 111a. One collecting circuit board 121 may be provided in each of the concave portions 111a of the plurality of cells 110 arranged side by side in the width direction Y. Two adjacent acquisition circuit boards 121 can be connected through a flexible connector 123.

In some examples, one collecting circuit board 121 is provided for each battery 110, and when the collecting circuit board 121 is located between two poles 112, one switching piece 122 may be provided at each end of the collecting circuit board 121 in the width direction Y to be connected to the poles 112 at each side of the recess 111a.

In some realizable forms, as shown in fig. 8 and 9, a plurality of cells 110 are arranged side by side in the thickness direction Z of the cells 110, and the concave portion 111a of one cell 110 is arranged corresponding to the concave portion 111a of the other cell 110 in the adjacent two cells 110.

In some examples, the housing 111 may include a housing 1111 and a cover 1112 connected. The housing 1111 may include a bottom plate 11111 and side plates 11112. The bottom plate 11111 and the side plate 11112 may together enclose a space that accommodates the battery cell 113. The post 112 may be disposed on the side plate 11112. In two adjacent cells 110, the bottom plate 11111 of one cell 110 may be connected to the cover 1112 of the other cell 110. Alternatively, the respective bottom plates 11111 of two adjacent cells 110 may be connected. The embodiment of the present application is not particularly limited.

In some examples, the housing 1111 and the cover 1112 may be connected using a welding process. For example, the connection between the housing 1111 and the cover 1112 may be laser welding.

In some examples, the housing 111 of the battery 110 may be a metallic material. Illustratively, the material of both the housing 1111 and the cover 1112 may be stainless steel.

In some examples, the collection circuit board 121 may be convexly disposed at a surface of the flexible connection member 123 facing the recess 111a along the length direction X of the battery 110. The surface of the collecting 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. In the thickness direction Z, the orthographic projection of the acquisition circuit board 121 may be located inside the orthographic projection of the housing 111. Along the length direction X, the front projection of the flexible connection 123 is located inside the front projection of the housing 111.

In some implementations, referring to fig. 9, the housing 111 of the embodiments of the present application includes a flange 1113. The pole 112 is provided on one side of the flange 1113 in the thickness direction Z of the battery 110. In the thickness direction Z, in the adjacent two cells 110, the respective burring 1113 are located on both sides of the flexible connection member 123, respectively.

In some examples, the flange 1113 may be disposed on a side of the side plate 11112 facing away from the bottom plate 11111. In the thickness direction Z, the front projection of the outer contour of the flange 1113 may exceed the front 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 of the housing 1111 and the cover 1112, thereby facilitating an improvement in connection reliability of the two.

In some examples, referring to fig. 7 and 10, when a plurality of cells 110 are arranged side by side in the width direction Y, the burring 1113 of one cell 110 may be connected to the side plate 11112 of the other cell 110 in adjacent two cells 110. The flange 1113 of one cell 110 and the flange 1113 of the other cell 110 may be disposed opposite to each other in the thickness direction Z. In other words, in the thickness direction Z, in the adjacent two cells 110, the orthographic projection of the burring 1113 of one cell 110 and the orthographic projection of the burring 1113 of the other cell 110 have overlapping regions.

The overall width of two adjacent batteries 110 arranged side by side is smaller than the sum of the widths of two batteries 110, so that, on one hand, the size of the battery module 100 can be reduced along the width direction Y, which is beneficial to improving the portability of the battery module 100. On the other hand, in the case where the battery module 100 is certain, the width dimension of the battery cells 113 may be increased accordingly, so that the energy density of the battery module 100 may be improved.

In some examples, referring to fig. 8, a plurality of cells 110 may be disposed side by side in the thickness direction Z. When the bottom plate 11111 of one cell 110 is connected to the cover 1112 of another cell 110, the plurality of concave portions 111a of the plurality of cells 110 may be separated from each other in the thickness direction Z by respective burring 1113. Two acquisition circuit boards 121 adjacent to each other in the thickness direction Z may be connected by a flexible connection 123. A flexible connector 123 leading from one acquisition circuit board 121 may span the flange 1113 and the cover 1112 to connect to the other acquisition circuit board 121.

In some examples, referring to fig. 9, two adjacent cells 110 are shown, where the backplane 11111 of one cell 110 is connected to the backplane 11111 of the other cell 110. The recess 111a of one battery 110 and the recess 111a of the other battery 110 may be disposed correspondingly so that the recess 111a of the one battery 110 and the recess 111a of the other battery 110 may communicate with each other to form the accommodation space 100a.

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

In some examples, the collection circuit board 121, the flexible connection 123, and the transfer sheet 122 may be located inside the outer contour of the cover 1112, so that the collection circuit board 121, the flexible connection 123, and the transfer sheet 122 may occupy the effective space of the battery module 100.

In some examples, one end of the collecting circuit board 121 may be provided with one switching piece 122 in the width direction Y, and one switching piece 122 may be simultaneously connected with the two poles 112 of the two batteries 110; the other end of the collecting circuit board 121 may be provided with two switching pieces 122, and the two switching pieces 122 may be connected with the two poles 112 of the two batteries 110, respectively.

In some implementations, referring to fig. 5-9, 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 connection 123.

The output interface 124 of the embodiments of the present application may be used to connect with an external host side. The output interface 124 may communicate data information collected by the battery 110 to the host side. The user can view the status of the battery 110 through the host side.

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

In some realizations, referring to fig. 10, the battery module 100 includes an insulating connector 130. Adjacent cells 110 are connected by an insulating connector 130.

When two batteries 110 are arranged side by side in the longitudinal 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 case 111 of one of the batteries 110, and another portion may cover the case 111 of the other battery 110, so that the two batteries 110 may be fixedly connected.

In some examples, along the length direction X, the collection circuit board 121, the flexible connection 123, and the switching piece 122 between the two batteries 110 may all be located inside the insulating connection 130, so that dust accumulation on the collection circuit board 121 may be reduced, resulting in a possibility of affecting the workability.

In some examples, the insulating connector 130 may be insulating glue. One side of the insulating gummed paper is adhered with the gum.

In some possible embodiments, the battery module 100 further includes an insulator (not shown in the drawings). The insulator is located within the recess 111a. The insulator is disposed between the acquisition circuit board 121 and the battery 110.

The insulating member of the embodiment of the application can insulate and isolate the acquisition circuit board 121 from the battery 110, so that the possibility of short circuit caused by connection of the acquisition circuit board 121 and the battery 110 can be reduced.

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

In some examples, the number of insulators may be multiple. The battery module 100 may further include a plurality of heat conductive sheets (not shown in the drawings). The heat conducting fin can conduct out the heat generated in the working process of the acquisition circuit board 121, and the possibility of faults caused by the overhigh temperature of the acquisition circuit board 121 is reduced. Illustratively, the thermally conductive sheet and the insulating member may be alternately laminated.

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

In some realizable forms, the battery module 100 further includes a heat conductive adhesive (not shown in the figures). The heat conductive paste connects the acquisition circuit board 121 and the battery 110.

The heat-conducting glue of the embodiment of the application can connect the acquisition circuit board 121 and the battery 110 on one hand; on the other hand, the heat generated by the acquisition circuit board 121 can be dispersed.

In some examples, a heat conductive adhesive may be located within the recess 111a to reduce the possibility that the heat conductive adhesive occupies the effective space itself, resulting in a decrease in the energy density of the battery module 100. Illustratively, a thermally conductive adhesive may be disposed between the acquisition circuit board 121 and the sidewalls of the recess 111a.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiments or implications herein must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the embodiments herein. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless specifically stated otherwise.

The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the present application described herein may be implemented, for example, in sequences other than those illustrated or described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The term "plurality" herein refers to two or more. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship; in the formula, the character "/" indicates that the front and rear associated objects are a "division" relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present application are merely for ease of description and are not intended to limit the scope of the embodiments of the present application.

It should be understood that, in the embodiments of the present application, the sequence number of each process described above does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A battery module, comprising:

2. The battery module according to claim 1, wherein the battery includes two opposite polarity poles, the recess being provided between the two poles;

alternatively, the battery comprises two polar posts with opposite polarities, and the two polar posts are positioned on the same side of the concave part;

alternatively, the battery includes two poles of opposite polarities, and the two poles are disposed between the two recesses.

3. The battery module according to claim 1, wherein two of the cells are arranged side by side in a longitudinal direction of the cells, and the pole faces of one of the cells are arranged toward the pole faces of the other of the cells.

4. The battery module according to claim 3, wherein a gap is provided between the two housings, the protection module further comprises a flexible connection member, the two collection circuit boards arranged at intervals are connected through the flexible connection member in the width direction of the battery, and the flexible connection member is located in the gap.

5. The battery module according to claim 4, wherein the number of the collecting circuit boards is arranged in one-to-one correspondence with the number of the concave portions, the protection module further comprises a flexible connecting member, and two adjacent collecting circuit boards are connected through the flexible connecting member.

6. The battery module according to claim 5, wherein adjacent two of the collecting circuit boards are located at both sides of the flexible connection member, respectively, in the length direction.

7. The battery module according to claim 1, wherein a plurality of the batteries are arranged side by side in a width direction of the batteries, the recesses of the plurality of the batteries are positioned on the same side in a length direction of the batteries, the protection module further comprises a flexible connecting member, and adjacent two of the acquisition circuit boards arranged at intervals in the width direction are connected by the flexible connecting member.

8. The battery module according to claim 1, wherein a plurality of the cells are arranged side by side in a thickness direction of the cells, and the concave portion of one of the cells is arranged corresponding to the concave portion of the other cell in adjacent two of the cells.

9. The battery module according to claim 7 or 8, wherein the protection module further comprises a flexible connection member, and the collecting circuit board is convexly disposed on a surface of the flexible connection member facing the recess along a length direction of the battery.

10. The battery module of claim 9, wherein a surface of the collection circuit board facing away from the recess is flush with a surface of the flexible connection member facing away from the battery, and an orthographic projection of the collection circuit board is located inside an orthographic projection of the housing in a thickness direction of the battery.

11. The battery module of claim 10, wherein the orthographic projection of the flexible connector is located inside the orthographic projection of the housing along the length direction.

12. The battery module according to claim 6 or 10, wherein the flexible connection unit is insulated from the housing.

13. The battery module of claim 1, wherein the protection module further comprises a flexible connection and an output interface, the output interface being connected with one of the acquisition circuit boards through the flexible connection.

14. The battery module according to claim 4, wherein the battery module comprises an insulating connecting member through which adjacent two of the batteries are connected, the insulating connecting member wrapping the gap, the flexible connecting plate, and the collecting circuit board.

15. The battery module of claim 4, further comprising an insulator positioned within the recess, the insulator disposed between the acquisition circuit board and the battery; and/or the number of the groups of groups,

the battery module further comprises heat conducting glue, and the heat conducting glue is connected with the acquisition circuit board and the battery.