Battery module and battery

Abstract

The utility model relates to a battery module and a battery, and the battery module comprises a battery cell assembly which comprises a plurality of battery cells which are sequentially arranged and fixed into a whole; the insulating part is arranged at the upper end of the battery cell assembly, the insulating part comprises a fixing piece, and a first opening and closing piece and a second opening and closing piece which are respectively connected to two sides of the fixing piece, the fixing piece is fixed on the battery cells, the fixing piece is provided with assembling holes which are in plug-in fit with the pole columns of the battery cells, and the first opening and closing piece and the second opening and closing piece are connected in an opening and closing manner; the electric connection assembly is arranged at the upper end of the fixing sheet and is electrically connected with the pole of the battery cell; wherein the first opening and closing sheet and the second opening and closing sheet can be opened relatively to expose the electric connection assembly, and the first opening and closing sheet and the second opening and closing sheet can be closed relatively to wrap the electric connection assembly in the insulating part. The high-voltage switch cabinet is convenient to overhaul and maintain, good in maintainability and good in insulativity.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery module and a battery. Background Art

[0002] In existing battery modules, an insulating sheet is generally provided at the upper end of the battery cell assembly, but battery modules equipped with insulating sheets are often inconvenient to inspect and have poor maintainability. For example, in some related technologies, the insulating sheet is tied and fixed to the steel strips on both sides of the battery module by cable ties. Before the battery module is placed in the box, the insulating sheet must be tied and fixed first. After packing, due to limited operating space, once the insulating sheet is removed, it cannot be fixed to the battery module again, so it is inconvenient to check the voltage of the battery module and the maintainability is poor.

[0003] Therefore, it is very necessary to provide a battery module and a battery that are easy to repair and maintain and have good maintainability. Summary of the invention

[0004] Based on this, the utility model provides a battery module, which includes:

[0005] A battery cell assembly, comprising a plurality of battery cells arranged in sequence and fixed into one body;

[0006] An insulating member is disposed at the upper end of the battery cell assembly, the insulating member includes a fixing plate and a first opening and closing plate and a second opening and closing plate respectively connected to both sides of the fixing plate, the fixing plate is fixed to the battery cell, and the fixing plate is provided with an assembly hole for plugging and matching with the pole of each battery cell, and the first opening and closing plate and the second opening and closing plate can be opened and closed for connection; and

[0007] An electrical connection assembly, disposed at the upper end of the fixing plate and electrically connected to the pole of the battery cell;

[0008] The first opening and closing piece and the second opening and closing piece can be relatively opened to expose the electrical connection component, and the first opening and closing piece and the second opening and closing piece can also be relatively closed to cover the electrical connection component in the insulating member.

[0009] Furthermore, the battery module also includes a connector for opening or closing the first opening and closing piece and the second opening and closing piece, the connector includes a first connecting portion arranged at an edge of the first opening and closing piece and a second connecting portion arranged at an edge of the second opening and closing piece, and the first connecting portion and the second connecting portion are detachably connected.

[0010] Furthermore, the battery cells are arranged in sequence along a first direction, and the first connecting portion and the second connecting portion extend along the first direction respectively.

[0011] Furthermore, the fixing sheets are respectively bonded and fixed to the battery cells.

[0012] Furthermore, the insulating member also includes a first side piece connecting the first opening and closing piece and the fixed piece and a second side piece connecting the second opening and closing piece and the fixed piece, the first side piece and the second side piece are respectively bent upward and extended from both sides of the fixed piece, and the fixed piece, the first side piece, the second side piece and the closed first opening and closing piece and the second opening and closing piece jointly limit a receiving space for receiving the electrical connection component.

[0013] Furthermore, a first folding mark is formed between the first opening and closing piece and the first side piece, a second folding mark is formed between the first side piece and the fixing piece, a third folding mark is formed between the fixing piece and the second side piece, and a fourth folding mark is formed between the second side piece and the second opening and closing piece.

[0014] Furthermore, the accommodating space is constructed as a heat-conducting channel with openings at both ends, and the fixing plate is also provided with a first clearance through hole corresponding to the explosion-proof valve of the battery cell, and the first clearance through hole is connected to the heat-conducting channel.

[0015] Furthermore, the aperture of the first clearance through hole is larger than the diameter of the explosion-proof valve.

[0016] Furthermore, the electrical connection assembly includes a circuit board and a bus bar, and the circuit board is electrically connected to the poles of the battery cell through the bus bar.

[0017] The utility model also provides a battery, which comprises a box and any one of the above-mentioned battery modules, wherein the battery module is installed in the box.

[0018] Compared with the prior art, the beneficial features of the utility model are: the battery module and the battery, the insulating part is arranged at the upper end of the battery cell assembly, the insulating part includes a fixing plate and a first opening and closing plate and a second opening and closing plate respectively connected to both sides of the fixing plate, the fixing plate is fixed to the battery cell, and the fixing plate is provided with an assembly hole which is plugged and matched with the poles of each battery cell, so as to facilitate the connection between the battery cell and the electrical connection component and the installation is convenient, the first opening and closing plate and the second opening and closing plate can be opened and closed for connection, the first opening and closing plate and the second opening and closing plate can be relatively opened to expose the electrical connection component electrically connected to the battery cell pole, so as to facilitate the inspection and maintenance and have good maintainability. After the inspection and maintenance is completed, the first opening and closing plate and the second opening and closing plate can be closed, so as to cover the electrical connection component in the insulating part and have good insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a first state of a battery module according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1A schematic structural diagram of a battery module shown in FIG. 1 , wherein the electrical connection components are removed;

[0021] Figure 3 for Figure 1 A schematic diagram of the insulating structure of the battery module shown;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the battery cell components in the battery module shown;

[0023] Figure 5 This is a schematic diagram of a second state of a battery module according to an embodiment of the utility model;

[0024] Figure 6 for Figure 5 A schematic diagram of the insulating structure of the battery module shown;

[0025] Among them: 1-battery cell assembly (101-battery cell (1011-first pole, 1012-second pole, 1013-explosion-proof valve)), 2-insulating member (201-fixed plate (2011-first assembly hole, 2012-second assembly hole, 2013-first clearance hole), 202-first opening and closing plate, 203-second opening and closing plate, 204-first side plate, 205-second side plate, 206-first folding mark, 207-second folding mark, 208-third folding mark, 209-fourth folding mark, 210-heat conduction channel), 3-electrical connection assembly (301-circuit board (3011-second clearance hole), 302-bus bar), 4-connecting member (401-first connecting part, 402-second connecting part, 403-zipper head), 5-foam sheet (501-third clearance hole). DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] Please refer to Figures 1 to 6 The battery module of the embodiment of the utility model includes a battery cell assembly 1, an insulating member 2 and an electrical connection assembly 3. The battery cell assembly 1 includes a plurality of battery cells 101 arranged in sequence and fixed into one. The insulating member 2 is arranged at the upper end of the battery cell assembly 1, and the insulating member 2 includes a fixing plate 201, a first opening and closing plate 202 and a second opening and closing plate 203. The fixing plate 201 is fixed to the battery cell 101, and an assembly hole for plugging and matching with the poles of each battery cell 101 is opened on the fixing plate 201. The first opening and closing plate 202 and the second opening and closing plate 203 are respectively connected to both sides of the fixing plate 201, and the first opening and closing plate 202 and the second opening and closing plate 203 can be opened and closed. The electrical connection assembly 3 is arranged at the upper end of the fixing plate 201, and the electrical connection assembly 3 is electrically connected to the poles of the battery cell 101. The first opening and closing piece 202 and the second opening and closing piece 203 can be relatively opened to expose the electrical connection component 3 , and the first opening and closing piece 202 and the second opening and closing piece 203 can also be relatively closed to cover the electrical connection component 3 in the insulating component 2 .

[0030] As an example, the insulating member 2 may be made of PP (Polypropylene). It is understandable that in other embodiments, the insulating member 2 may also be made of other materials, which will not be described in detail herein.

[0031] For some examples, please refer to Figure 4 Each battery cell 101 has a first pole 1011 and a second pole 1012. Figure 3 The assembly holes of the fixing plate 201 are divided into a first assembly hole 2011 and a second assembly hole 2012. The fixing plate 201 may be provided with a plurality of first assembly holes 2011 and a plurality of second assembly holes 2012. The first assembly holes 2011 are plugged and matched with the first poles 1011 of the battery cell 101 in a one-to-one correspondence, and the second assembly holes 2012 are plugged and matched with the second poles 1012 of the battery cell 101 in a one-to-one correspondence. The first pole 1011 may be a positive pole, and the second pole 1012 may be a negative pole.

[0032] In some preferred embodiments, please refer to Figures 1 to 3 , Figure 5 and Figure 6 , the battery module also includes a connector 4. Please refer to Figures 1 to 3 , the connecting member 4 can be used to open the first opening and closing piece 202 and the second opening and closing piece 203. Please refer to Figure 5 and Figure 6 The connector 4 can also be used to close the first opening and closing piece 202 and the second opening and closing piece 203. The connector 4 includes a first connecting portion 401 and a second connecting portion 402. The first connecting portion 401 is arranged at the edge of the first opening and closing piece 202, and the second connecting portion 402 is arranged at the edge of the second opening and closing piece 203. The first connecting portion 401 and the second connecting portion 402 are detachably connected.

[0033] In this embodiment, when maintenance is required, the first connection part 401 and the second connection part 402 can be disconnected. Figure 1 , so that the first opening and closing piece 202 and the second opening and closing piece 203 can be opened to check whether the voltage, temperature and other parameters of the battery module are normal. After the inspection is completed, the first connecting part 401 and the second connecting part 402 can be reconnected together to close the first opening and closing piece 202 and the second opening and closing piece 203. Please refer to Figure 5 , the electrical connection assembly 3 is covered therein, and the insulation effect is good. The first connection part 401 and the second connection part 402 can be repeatedly disassembled as needed, which is convenient to use, easy to repair and maintain, and improves the service life of the battery module.

[0034] For some examples, see Figures 1 to 3 , Figure 5 and Figure 6 As shown, the connecting member 4 may be a zipper structure. The connecting member 4 may include a zipper head 403, a first connecting portion 401, and a second connecting portion 402. The first connecting portion 401 may be a first sprocket, which is fixed to the edge of the first opening and closing piece 202. The second connecting portion 402 may be a second sprocket, which is fixed to the edge of the second opening and closing piece 203. Under the action of the zipper head 403, the first connecting portion 401 and the second connecting portion 402 may be engaged with each other, so that the first opening and closing piece 202 and the second opening and closing piece 203 are closed. Under the action of the zipper head 403, the first connecting portion 401 and the second connecting portion 402 may also be separated, so that the first opening and closing piece 202 and the second opening and closing piece 203 may be relatively opened.

[0035] In other examples, the connecting member 4 may also be a snap-fit ​​structure. For example, the first connecting portion 401 may be a snap-fit ​​tooth, which may be fixed to the edge of the first opening and closing piece 202. The second connecting portion 402 may be a snap-fit ​​hole, which may be opened at the edge of the second opening and closing piece 203. The first connecting portion 401 and the second connecting portion 402 may be snap-fitted, and the first connecting portion 401 and the second connecting portion 402 may be snap-fitted together, so that the first opening and closing piece 202 and the second opening and closing piece 203 are closed. The first connecting portion 401 and the second connecting portion 402 may also be separated, so that the first opening and closing piece 202 and the second opening and closing piece 203 may be relatively opened.

[0036] It should be noted that, in other embodiments, the connecting member 4 may also be other structures, as long as the connecting member 4 can enable the first opening and closing piece 202 and the second opening and closing piece 203 to be opened and closed and connected, which will not be elaborated here.

[0037] In some preferred embodiments, please refer to Figure 3 and Figure 4 The battery cells 101 are arranged in sequence along the first direction, and the first connecting portion 401 and the second connecting portion 402 extend along the first direction, so that the first opening and closing piece 202 and the second opening and closing piece 203 can be opened along the first direction, thereby facilitating a more comprehensive inspection of the battery module and improving maintainability.

[0038] In some preferred embodiments, the fixing sheet 201 is respectively bonded and fixed to each battery cell 101, which not only has a simple structure and is easy to install, thereby improving assembly efficiency, but also the installation of the insulating member 2 will not have an adverse effect on other structures on the battery module, further ensuring the insulation effect.

[0039] In some preferred embodiments, please refer to Figures 1 to 3 , Figure 5 and Figure 6 The insulating member 2 further includes a first side piece 204 and a second side piece 205. The first side piece 204 connects the first opening and closing piece 202 and the fixed piece 201, and the second side piece 205 connects the second opening and closing piece 203 and the fixed piece 201. The first side piece 204 and the second side piece 205 are bent upward and extend from both sides of the fixed piece 201 respectively. The fixed piece 201, the first side piece 204, the second side piece 205, and the closed first opening and closing piece 202 and the second opening and closing piece 203 jointly limit a receiving space for receiving the electrical connection component 3. The insulating member 2 includes a first side piece 204 and a second side piece 205, which can allow the electrical connection component 3 to be accommodated in a accommodating space with a certain height, thereby protecting the electrical connection component 3 and preventing the closed first opening and closing piece 202 and the second opening and closing piece 203 from pressing on the electrical connection component 3. It also makes it easier to open and close the first opening and closing piece 202 and the second opening and closing piece 203, and can also prevent the opening and closing operations of the first opening and closing piece 202 and the second opening and closing piece 203 from affecting the electrical connection component 3, thereby making the battery module structure more stable and reliable.

[0040] In some preferred embodiments, please refer to Figures 1 to 3 , Figure 5 and Figure 6The insulating member 2 further includes a first folding mark 206, a second folding mark 207, a third folding mark 208 and a fourth folding mark 209. The first folding mark 206 is formed between the first opening and closing piece 202 and the first side piece 204, the second folding mark 207 is formed between the first side piece 204 and the fixing piece 201, the third folding mark 208 is formed between the fixing piece 201 and the second side piece 205, and the fourth folding mark 209 is formed between the second side piece 205 and the second opening and closing piece 203. In this embodiment, the first opening and closing piece 202 can be opened and closed along the first folding mark 206, and the second opening and closing piece 203 can be opened and closed along the fourth folding mark 209. The first folding mark 206 and the fourth folding mark 209 limit the opening and closing paths of the first opening and closing piece 202 and the second opening and closing piece 203, which makes it easier to open and close the first opening and closing piece 202 and the second opening and closing piece 203, and is more convenient to use. In addition, the first folding mark 206, the second folding mark 207, the third folding mark 208 and the fourth folding mark 209 are provided. After the insulating part 2 is folded along the folding marks, the insulating part 2 can have a accommodating space of a fixed size, which not only improves the assembly efficiency, but also improves the product yield of the battery module.

[0041] In some more preferred embodiments, the receiving space is constructed as a heat conduction channel 210 with openings at both ends, and the fixing plate 201 is further provided with a first clearance hole 2013 corresponding to the explosion-proof valve 1013 of the battery cell 101, and the first clearance hole 2013 is connected to the heat conduction channel 210. As an example, please refer to Figure 5 and Figure 6 , the openings can be located at both ends of the X direction of the heat conduction channel 210. If thermal runaway occurs, the insulating member 2 can not only play a certain isolation role, but the heat conduction channel 210 can also play a certain guiding role on the thermal runaway airflow, guiding the thermal runaway airflow to flow in the first direction in the heat conduction channel 210 and be discharged, so as to facilitate rapid heat dissipation.

[0042] In some examples, the aperture of the first through hole 2013 is larger than the diameter of the explosion-proof valve 1013 , so as to facilitate the airflow in thermal runaway to enter the heat conduction channel 210 .

[0043] In some preferred embodiments, please refer to Figure 1 The electrical connection assembly 3 may include a circuit board 301 and a bus bar 302 , and the circuit board 301 is electrically connected to the pole of the battery cell 101 through the bus bar 302 .

[0044] In some more preferred embodiments, please refer to Figure 1 A second through hole 3011 corresponding to the explosion-proof valve 1013 of the battery cell 101 is provided on the circuit board 301, which can not only protect the circuit board 301 and further reduce the damage to the circuit board 301 caused by thermal runaway, but also facilitate the airflow of thermal runaway to enter the heat conduction channel 210.

[0045] As an example, the circuit board 301 may be a PCB (Printed Circuit Board). It is understandable that in other embodiments, the circuit board 301 may also be other types of circuit boards 301, which will not be described in detail herein.

[0046] In some more preferred embodiments, please refer to Figure 1 The battery module may further include a foam sheet 5, which is disposed between the electrical connection component 3 and the fixing sheet 201. The foam sheet 5 may not only serve as an insulating buffer, but also facilitate production line operation and assembly.

[0047] For some examples, see Figure 1 The foam sheet 5 may also be provided with a third through hole 501 corresponding to the explosion-proof valve 1013 of the battery cell 101 , so as to facilitate the airflow in thermal runaway to enter the heat conduction channel 210 .

[0048] The battery of the embodiment of the utility model comprises a box body and any one of the above-mentioned battery modules, wherein the battery module is installed in the box body.

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A battery module, characterized in that: include: A battery cell assembly, comprising a plurality of battery cells arranged in sequence and fixed into one body; An insulating member is disposed at the upper end of the battery cell assembly, the insulating member includes a fixing plate and a first opening and closing plate and a second opening and closing plate respectively connected to both sides of the fixing plate, the fixing plate is fixed to the battery cell, and the fixing plate is provided with an assembly hole for plugging and matching with the pole of each battery cell, and the first opening and closing plate and the second opening and closing plate can be opened and closed for connection; and An electrical connection assembly, disposed at the upper end of the fixing plate and electrically connected to the pole of the battery cell; The first opening and closing piece and the second opening and closing piece can be relatively opened to expose the electrical connection component, and the first opening and closing piece and the second opening and closing piece can also be relatively closed to cover the electrical connection component in the insulating member.

2. The battery module according to claim 1, characterized in that: The battery module also includes a connector for opening or closing the first opening and closing piece and the second opening and closing piece, the connector includes a first connecting portion arranged at an edge of the first opening and closing piece and a second connecting portion arranged at an edge of the second opening and closing piece, and the first connecting portion and the second connecting portion are detachably connected.

3. The battery module according to claim 2, characterized in that: The battery cells are arranged in sequence along a first direction, and the first connecting portion and the second connecting portion extend along the first direction respectively.

4. The battery module according to claim 1, characterized in that: The fixing sheets are respectively bonded and fixed to the battery cells.

5. The battery module according to claim 1, characterized in that: The insulating member also includes a first side piece connecting the first opening and closing piece and the fixed piece and a second side piece connecting the second opening and closing piece and the fixed piece. The first side piece and the second side piece are respectively bent upward and extended from both sides of the fixed piece. The fixed piece, the first side piece, the second side piece and the closed first opening and closing piece and the second opening and closing piece jointly limit a receiving space for receiving the electrical connection component.

6. The battery module according to claim 5, characterized in that: A first folding mark is formed between the first opening and closing piece and the first side piece, a second folding mark is formed between the first side piece and the fixing piece, a third folding mark is formed between the fixing piece and the second side piece, and a fourth folding mark is formed between the second side piece and the second opening and closing piece.

7. The battery module according to claim 5, characterized in that: The receiving space is constructed as a heat conduction channel with openings at both ends. The fixing plate is also provided with a first clearance through hole corresponding to the explosion-proof valve of the battery core, and the first clearance through hole is connected to the heat conduction channel.

8. The battery module according to claim 7, characterized in that: The aperture of the first clearance through hole is larger than the diameter of the explosion-proof valve.

9. The battery module according to claim 1, characterized in that: The electrical connection assembly includes a circuit board and a bus bar, and the circuit board is electrically connected to the pole of the battery cell through the bus bar.

10. A battery, characterized in that: It comprises a box body and a battery module as claimed in any one of claims 1 to 9, wherein the battery module is installed in the box body.

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