Battery module and electric equipment

Abstract

The utility model relates to a battery module and electric equipment, and relates to the technical field of batteries, the battery module comprises a plurality of batteries, a bus piece and a cold plate, each battery comprises a top cover and two pole columns arranged on the top cover; the bus piece comprises a connecting part and a heat conducting part which are connected with each other, the connecting part is used for connecting the poles of two adjacent batteries, and the heat conducting part is bent towards the direction close to the top cover so as to at least extend between the two poles; the cold plate comprises a body and a protrusion protruding relative to the surface of the body, the body covers the connecting part, and the protrusion covers the heat conduction part. According to the battery module and the electric equipment, the heat exchange area between the cold plate and the confluence piece can be increased, the cooling effect of the confluence piece is improved, and the working temperature of the busbar is kept in a normal range.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly relates to a battery module and an electrical device. Background Art

[0002] In the related art, a battery module includes a plurality of batteries. Current transfer is achieved between adjacent batteries through a busbar. The busbar generates heat during operation. To prevent the temperature of the busbar from being too high, in the prior art, a cold plate can be covered on the busbar to cool it down. In the related art, the heat exchange area between the cold plate and the busbar is small, and the cooling effect on the busbar is not good. It is still easy for the temperature of the busbar to be relatively high, which is likely to cause safety accidents. Utility Model Content

[0003] To solve the above technical problems, embodiments of this application provide a battery module and an electrical device, which can increase the heat exchange area between the cold plate and the busbar, improve the cooling effect of the busbar, and keep the temperature of the busbar within the normal range during operation.

[0004] In a first aspect, a battery module is provided, including:

[0005] A plurality of batteries, each battery including a top cover and two pole posts provided on the top cover;

[0006] A busbar, the busbar including a connecting portion and a heat conducting portion connected to each other. The connecting portion is used to connect the pole posts of two adjacent batteries, and the heat conducting portion bends towards the direction close to the top cover to at least extend between the two pole posts;

[0007] A cold plate, including a body and a protrusion protruding from the surface of the body. The body covers the connecting portion, and the protrusion covers the heat conducting portion.

[0008] According to the first aspect of this application, the two pole posts of the same battery are respectively connected to two busbars. The two heat conducting portions of the two busbars extend relatively towards the ends away from the connecting portions connected to them respectively and form a first gap. Among them, the width range of the first gap is 3 - 6 mm.

[0009] According to the first aspect of this application, the battery module further includes:

[0010] A first isolation member, disposed between the two pole posts of the battery. The first isolation member includes a first isolation plate and a first protrusion protruding from the surface of the first isolation plate. The first isolation plate is disposed between the top cover and the heat conducting portion, and the first protrusion is disposed in the first gap;

[0011] Wherein, the first spacer is in interference fit between the top cover and the heat conducting part, and the height of the first rib relative to the top cover is greater than or equal to the height of the heat conducting part relative to the top cover.

[0012] According to the first aspect of the present application, the first spacer is a voltage acquisition board, and a voltage acquisition component is provided on a side of the voltage acquisition board facing away from the battery. The heat conducting part presses against the voltage acquisition component, wherein the voltage acquisition component is an elastic body.

[0013] According to the first aspect of the present application, one ends of the heat conducting parts of two busbars connected to two adjacent batteries arranged in the first direction extend relatively away from the connection parts to which they are respectively connected and form a second gap, wherein the width range of the second gap is 3-6 mm.

[0014] According to the first aspect of the present application, the battery module further includes:

[0015] A second spacer, including a second spacer plate, a second rib and a third rib protruding from opposite side surfaces of the second spacer plate respectively. The second spacer plate is arranged between the pole columns of two batteries arranged in the first direction and between the top cover and the heat conducting part. The second rib is arranged between the side walls of two batteries arranged in the first direction, and the third rib is arranged in the second gap;

[0016] Wherein, the second spacer is in interference fit between the top cover and the heat conducting part, and the height of the third rib relative to the top cover is greater than or equal to the height of the heat conducting part relative to the top cover.

[0017] According to the first aspect of the present application, the second rib is a temperature acquisition board, and a temperature acquisition component is provided on at least one side wall of the second rib. The temperature acquisition component presses against the side wall of the battery opposite thereto.

[0018] According to the first aspect of the present application, the first spacer is an insulating and heat conducting member.

[0019] According to the first aspect of the present application, the second spacer is an insulating and heat conducting member.

[0020] According to the first aspect of the present application, an insulating and heat conducting layer is covered between the busbar and the cold plate, and a part of the insulating and heat conducting layer is bent to adapt to the bent part of the busbar and the side wall of the protrusion.

[0021] In a second aspect, an electrical device is further provided, including the battery module as described in the previous embodiment.

[0022] The battery module and the electrical device provided by the embodiments of the present application achieve heat exchange through the connection part between the body of the cold plate and the bus bar, and achieve heat exchange through the convex part of the cold plate and the heat-conducting part of the bus bar, which can enable the whole of the cold plate and the bus bar to achieve heat exchange. Compared with the related art in which the cold plate only exchanges heat with a part of the bus bar, the heat exchange area between the cold plate and the bus bar can be effectively increased, the cooling effect of the bus bar can be improved, and the temperature of the bus bar during operation can be kept within the normal range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By describing the embodiments of the present application in more detail with reference to the drawings, the above and other objects, features and advantages of the present application will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0024] Figure 1 An exploded schematic diagram of a battery module provided by an exemplary embodiment of the present application.

[0025] Figure 2 A schematic structural diagram of a battery provided by an exemplary embodiment of the present application.

[0026] Figure 3 A schematic structural diagram of a bus bar provided by an exemplary embodiment of the present application.

[0027] Figure 4 A partial sectional view of a battery module provided by an exemplary embodiment of the present application.

[0028] Figure 5 For Figure 4 an enlarged schematic view of part A in

[0029] Figure 6 A partial schematic view of a battery module provided by an exemplary embodiment of the present application after removing the cold plate and part of the bus bar.

[0030] Figure 7 For Figure 4 an enlarged schematic view of part B in

[0031] Figure 8 A schematic structural diagram of a second spacer provided by an exemplary embodiment of the present application.

[0032] Reference numerals: 100 - battery module; 110 - battery; 111 - top cover; 112 - terminal post; 120 - bus bar; 121 - connection part; 122 - heat conducting part; 130 - cold plate; 131 - body; 132 - protrusion; 140 - insulating heat conducting layer; 150 - first spacer; 151 - first separator plate; 152 - first rib; 160 - voltage acquisition component; 170 - second spacer; 171 - second separator plate; 172 - second rib; 173 - third rib; 180 - temperature acquisition component; 190 - box body. Detailed implementation manners

[0033] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0034] Figure 1 An exploded view of the battery module provided in an exemplary embodiment of the present application. Figure 2 A structural diagram of the battery provided in an exemplary embodiment of the present application. As Figure 1 and Figure 2 shown, the battery module 100 provided in the embodiment of the present application may include a plurality of batteries 110. Each battery 110 includes a top cover 111 and two terminal posts 112. The two terminal posts 112 are disposed on the top cover 111. Generally, the two terminal posts 112 are usually divided into a positive terminal post and a negative terminal post.

[0035] As Figure 1 shown, a plurality of batteries 110 are usually assembled in a box body 190, and the box body 190 plays a protective role for the plurality of batteries 110.

[0036] Figure 3 A structural diagram of the bus bar provided in an exemplary embodiment of the present application. As Figure 1 and Figure 3 shown, the battery module 100 may further include a bus bar 120. The bus bar 120 includes a connection part 121 and a heat conducting part 122 that are connected to each other. Generally, heat conducting parts 122 are connected to both opposite sides of the connection part 121, thereby increasing the heat conducting area. Optionally, the heat conducting part 122 may also be provided only on one side of the connection part 121. Referring to Figure 6 , the connection part 121 is used to connect the terminal posts 112 of two adjacent batteries 110. In this way, the bus bar 120 transfers current between two adjacent batteries 110.

[0037] Figure 4 A partial sectional view of the battery module provided in an exemplary embodiment of the present application. Figure 5 For Figure 4 the enlarged view at A inFigures 3 to 5 As shown, the heat conducting part 122 is bent towards the top cover 111. In this way, at least part of the heat conducting part 122 can extend between the two pole columns 112, making full use of the space between the two pole columns 112 and effectively improving the space utilization rate.

[0038] In one embodiment, all of the heat conducting part 122 is located between the two pole columns 112, which can further utilize the space between the two pole columns 112.

[0039] It should be noted that at least part of the aforementioned heat conducting part 122 extending between the two pole columns 112 can be understood as at least part of the heat conducting part 122 extending between the two pole columns 112 of the same battery 110, or it can also be understood as at least part of the heat conducting part 122 extending between the adjacent two pole columns 112 of two adjacent batteries 110.

[0040] Combined with Figure 1 and Figure 5 As shown, the battery module 100 may further include a cold plate 130. Generally, the cold plate 130 covers the bus bar 120 and cools the bus bar 120. Specifically, the cold plate 130 includes a main body 131 and a protrusion 132 protruding from the surface of the main body 131. The main body 131 covers the connecting part 121, and the protrusion 132 covers the heat conducting part 122. In this way, on the one hand, the heat transferred from the pole column 112 to the connecting part 121 and the heat generated by the connecting part 121 itself after being energized can be transferred to the main body 131, and heat exchange is achieved between the main body 131 and the connecting part 121, thereby cooling the connecting part 121 and the pole column 112; on the other hand, the heat transferred from the top cover 111 of the battery 110 to the heat conducting part 122 and the heat generated by the heat conducting part 122 itself after being energized can be transferred to the protrusion 132, and heat exchange is achieved between the protrusion 132 and the heat conducting part 122, thereby cooling the heat conducting part 122 and the top cover 111 of the battery 110. The heat conducting part 122 is bent towards the top cover 111, so as to reduce the distance between the heat conducting part 122 and the top cover 111 and improve the heat exchange efficiency.

[0041] It should be understood that for the battery module 100 provided in the embodiments of the present application, heat exchange is achieved through the connection portion 121 between the body 131 of the cold plate 130 and the bus bar 120, and heat exchange is achieved through the protrusion 132 of the cold plate 130 and the heat conducting portion 122. This can enable heat exchange to be achieved throughout the cold plate 130 and the bus bar 120. Compared with the related art where the cold plate 130 only exchanges heat with a part of the bus bar 120, the heat exchange area between the cold plate 130 and the bus bar 120 can be effectively increased, the cooling effect of the bus bar 120 can be improved, the temperature of the bus bar 120 during operation can be maintained within the normal range, and heat exchange can also be performed on the battery top cover, improving the overall heat exchange efficiency and ensuring battery safety.

[0042] It should be noted that for the cold plate 130, providing the protrusion 132 on the body 131 can also enhance the overall strength of the cold plate 130 and make it not easily bent. Moreover, by embedding the protrusion 132 in the bent heat conducting portion 122, the positioning and assembly between the cold plate 130 and the bus bar 120 can be facilitated, effectively improving the assembly efficiency of the cold plate 130.

[0043] As Figure 5 shown, for the same battery 110, the two pole posts 112 of the battery 110 are respectively connected to the connection portions 121 of the two bus bars 120, the two heat conducting portions 122 of the two bus bars 120 both extend between the two pole posts 112, and the ends of the two heat conducting portions 122 away from the connection portions 121 they are respectively connected to extend relatively and form a first gap ( Figure 5 the distance indicated by the label C in

[0044] ). In this way, the two heat conducting portions 122 can be prevented from contacting each other, causing a short circuit in the battery 110.

[0045] As Figure 5 shown, the battery module 100 may further include a first isolation member 150, and the first isolation member 150 is disposed between the two pole posts 112 of the battery 110. Specifically, the first isolation member 150 may include a first isolation plate 151 and a first rib 152 protruding from the surface of the first isolation plate 151. The first isolation plate 151 is disposed between the top cover 111 and the heat conducting portion 122. The first isolation plate 151 prevents the heat conducting portion 122 from directly contacting the top cover 111, avoiding the problem of short circuit. The first rib 152 is disposed in the first gap, and the first rib 152 can prevent the two heat conducting portions 122 from contacting each other, thereby further avoiding the occurrence of a short circuit.

[0046] It should be noted that the first isolation plate 151 is in interference fit between the top cover 111 and the heat conduction part 122, so that the first isolation plate 151, the top cover 111 and the heat conduction part 122 are in close contact with each other, facilitating the rapid transfer of heat. Moreover, the height of the first rib 152 relative to the top cover 111 (i.e., the distance between the top wall of the first rib 152 and the surface of the top cover 111) is greater than or equal to the height of the heat conduction part 122 relative to the top cover 111 (i.e., the distance between the top wall of the heat conduction part 122 and the surface of the top cover 111). In this way, on the one hand, the first rib 152 can completely prevent the two heat conduction parts 122 from contacting each other, and prevent the two heat conduction parts 122 from contacting and short-circuiting each other; on the other hand, the first rib 152 can be in direct contact with the protrusion 132 of the cold plate 130, and can quickly transfer part of the heat transferred by the top cover 111 of the battery 110 to the cold plate 130, effectively improving the cooling efficiency of the top cover 111 of the battery 110.

[0047] In one embodiment, the first isolation plate 151 is an insulating and heat-conducting member, which can play an insulating role on the one hand to prevent the two heat conduction parts 122 from being electrified and short-circuited with each other; on the other hand, it can quickly transfer the heat generated by the top cover 111 of the battery 110 to the heat conduction part 122, which is beneficial to improving the cooling efficiency of the top cover 111 of the battery 110.

[0048] Figure 6 This is a partial schematic diagram of the battery module provided by an exemplary embodiment of the present application after removing the cold plate and part of the bus bar. As Figure 6 shown, the first isolation plate 151 is a voltage acquisition board. A voltage acquisition member 160 is provided on the side of the voltage acquisition board facing away from the battery 110. The heat conduction part 122 is pressed against the voltage acquisition member 160. The voltage acquisition member 160 can detect the working voltage of the battery 110 by connecting to the heat conduction part 122, and transfer the working voltage data to the control unit through the voltage acquisition board. Therefore, the first isolation plate 151 can play a comprehensive role of insulation and voltage acquisition.

[0049] It should be noted that for the convenience of installation and disassembly, the voltage acquisition member 160 is an elastic body. After the heat conduction part 122 is welded to the pole column, it is pressed against the voltage acquisition member 160, and the voltage acquisition member 160 is in a compressed state. In this way, under the action of the restoring force, the voltage acquisition member 160 can always contact the heat conduction part 122, which is beneficial to continuously acquire voltage data, improve the accuracy of voltage acquisition data, and avoid the problem of poor contact caused by vibration.

[0050] In one embodiment, an installation groove can be provided on the side of the voltage acquisition board facing away from the battery 110. The voltage acquisition member 160 is arranged in the installation groove, and part of the voltage acquisition member 160 protrudes out of the installation groove to abut against the heat conduction part 122. In this way, the installation groove can limit and protect the voltage acquisition member 160.

[0051] In one embodiment, a groove may also be provided at the corresponding portion of the heat conducting portion 122 pressing against the voltage collecting member 160. The groove engages with the voltage collecting member 160, which can also limit and protect the voltage collecting member 160.

[0052] Figure 7 is Figure 4 the enlarged schematic view at B in. As Figure 4 and Figure 7 shown, for two adjacent batteries 110 arranged along the first direction ( Figure 4 and Figure 7 the directions indicated by arrows E and F in), the ends of the two heat conducting portions 122 of the two bus bars 120 connected to the two batteries 110 extend relatively away from the connection portions 121 to which they are respectively connected and form a second gap ( Figure 7 the distance indicated by the identifier D in), so that the two heat conducting portions 122 can be prevented from contacting each other, causing a short circuit of the battery 110.

[0053] In one embodiment, the width range of the second gap is 3 - 6 mm. For example, the width of the second gap can be 3 mm, 5 mm, 6 mm, etc.

[0054] As Figure 7 shown, the battery module 100 may further include a second isolating member 170. For two adjacent batteries 110 arranged along the first direction, the second isolating member 170 is disposed between the two batteries 110. Specifically, the second isolating member 170 may include a second isolating plate 171, and second protruding strips 172 and third protruding strips 173 protruding from the two opposite side surfaces of the second isolating plate 171 respectively. The second isolating plate 171 is disposed between the pole columns 112 of two adjacent batteries 110 arranged along the first direction, and the second isolating plate 171 is disposed between the top cover 111 of the battery 110 and the heat conducting portion 122. The second isolating plate 171 prevents a short circuit between the top cover 111 and the heat conducting portion 122; the second protruding strip 172 is disposed between the side walls of two adjacent batteries 110 arranged along the first direction, and the second protruding strip 172 can prevent the side walls of the two batteries 110 from contacting each other, avoiding a short circuit of the two batteries 110; the third protruding strip 173 is disposed in the second gap, and the third protruding strip 173 can prevent the two heat conducting portions 122 from contacting each other, thereby further avoiding the occurrence of a short circuit.

[0055] It should be noted that the second partition plate 171 is in interference fit between the top cover 111 and the heat conduction part 122, so that the second partition plate 171, the top cover 111 and the heat conduction part 122 are in close contact with each other, facilitating rapid heat transfer. Moreover, the height of the third rib 173 relative to the top cover 111 (i.e., the distance between the top wall of the third rib 173 and the surface of the top cover 111) is greater than or equal to the height of the heat conduction part 122 relative to the top cover 111 (i.e., the distance between the top wall of the heat conduction part 122 and the surface of the top cover 111). In this way, on the one hand, the third rib 173 can completely prevent the two heat conduction parts 122 from contacting each other, preventing the two heat conduction parts 122 from contacting and short-circuiting each other; on the other hand, the third rib 173 can be in direct contact with the protrusion 132 of the cold plate 130, and can quickly transfer part of the heat transferred by the top cover 111 of the battery 110 to the cold plate 130, effectively improving the cooling efficiency of the top cover 111 of the battery 110.

[0056] In an embodiment, the second partition plate 171 is an insulating and heat-conducting member. On the one hand, it can play an insulating role to prevent the two heat conduction parts 122 from being electrified and short-circuited; on the other hand, it can quickly transfer the heat generated by the top cover 111 of the battery 110 to the heat conduction part 122, which is beneficial to improving the cooling efficiency of the top cover 111 of the battery 110.

[0057] It can be understood that the heat conduction part 122 can be arranged on both sides of the pole 112 along the first direction, so as to expand the overall volume of the bus bar 120, thereby improving the overall heat exchange effect. The heat conduction part 122 can also be arranged on one side of the pole 112 to simplify the structure, and the position of the heat conduction part 122 can be configured according to needs. Refer to Figure 6 As shown, in order to improve the heat exchange efficiency, heat conduction parts 122 are connected to both sides of the two bus bars of the same battery, so that the two bus bars can cover most of the area on the top cover. Further, the two bus bars cover all the area of the top cover except the first gap, so as to maximize the heat exchange area and improve the space utilization rate.

[0058] Figure 8 This is a schematic structural diagram of the second separator provided by an exemplary embodiment of the present application. As Figure 8As shown, the second rib extends downward to form a plate-like structure. The second rib 172 can be configured as a temperature acquisition plate, or a temperature acquisition plate can be provided on the second rib 172. The temperature acquisition member 180 is provided on at least one side wall of the second rib 172. The temperature acquisition member 180 abuts against the side wall of the battery 110 opposite thereto, that is, between two batteries 110 arranged in the first direction. In this way, the temperature acquisition member 180 is in direct contact with the side wall of the battery 110, and the temperature of the battery 110 can be detected more accurately. Moreover, the temperature acquisition member 180 can transmit the temperature data of the battery 110 to the control unit through the temperature acquisition plate. Therefore, the second rib 172 can play a comprehensive role of insulation and auxiliary temperature acquisition. It should be noted that at this time, the second rib 172 is an insulating and heat-insulating member to prevent heat exchange between the cold plate 130 and the battery, which may affect the temperature detection result. The whole of the second partition plate 171 can be an insulating and heat-insulating member to ensure the heat-insulating effect. Or only the second rib is an insulating and heat-insulating member, and other structures are still insulating and heat-conducting members to take into account cooling the battery top cover and acquiring the temperature of the side of the battery for temperature measurement.

[0059] As Figure 5 and Figure 7 shown, an insulating and heat-conducting layer 140 is covered between the bus bar 120 and the cold plate 130. On the one hand, the insulating and heat-conducting layer 140 can play an insulating role to avoid short circuit caused by the mutual contact between the bus bar 120 and the cold plate 130. On the other hand, it can ensure heat transfer between the bus bar 120 and the cold plate 130 and guarantee the cooling effect of the cold plate 130 on the bus bar 120.

[0060] It should be noted that a part of the insulating and heat-conducting layer 140 is bent. In this way, it can be adapted to the bent part of the bus bar 120 and the side wall of the protrusion 132, which is convenient for the insulating and heat-conducting layer 140 to closely adhere to the bus bar 120 and the protrusion 132, and ensure that heat can be transferred quickly.

[0061] In an embodiment, the insulating and heat-conducting layer 140 may include a heat-conducting pad, a heat-conducting coating, etc.

[0062] The embodiment of the present application also provides an electrical device, which includes the battery module 100 of the foregoing embodiment and has all the functions and all the beneficial effects of the battery module 100.

[0063] In one embodiment, the electrical device can be powered by the battery module 100 described above. Among them, the electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, an energy storage device, an amusement device, an elevator and a lifting device, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.; the electric toy includes a stationary or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy or an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator and a planer, etc.; the energy storage device can be an energy storage wall, a base station energy storage, a container energy storage, etc.; the amusement device can be a carousel, a drop tower, etc. This application does not impose special restrictions on the above electrical device.

[0064] The basic principles of this application have been described in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in this application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of this application. In addition, the above-disclosed specific details are only for the purposes of illustration and facilitating understanding, rather than limitations. These details do not limit this application to necessarily adopt the above specific details to implement.

[0065] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any way. Words such as "including", "comprising", "having", etc. are open-ended words, meaning "including but not limited to", and can be used interchangeably with each other. The words "or" and "and" used here refer to the word "and / or", and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with each other.

[0066] It should also be noted that in the devices, equipment, and methods of this application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of this application.

[0067] The above description of the disclosed aspects enables any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Accordingly, the present application is not intended to be limited to the aspects shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0068] The above description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although numerous example aspects and embodiments have been discussed above, those skilled in the art will recognize some variations, modifications, alterations, additions, and subcombinations thereof.

Claims

1. A battery module, characterized in that, Comprising: A plurality of batteries (110), each battery (110) including a top cover (111) and two pole posts (112) provided on the top cover (111); A bus bar (120), the bus bar (120) including a connecting portion (121) and a heat conducting portion (122) connected to each other, the connecting portion (121) being used for connecting the pole posts (112) of two adjacent batteries (110), and the heat conducting portion (122) being bent towards the direction close to the top cover (111) so as to extend at least between the two pole posts (112); A cold plate (130), including a main body (131) and a protrusion (132) protruding from the surface of the main body (131), the main body (131) covering the connecting portion (121), and the protrusion (132) covering the heat conducting portion (122).

2. The battery module according to claim 1, wherein The two pole posts (112) of the same battery (110) are respectively connected to two bus bars (120), and the ends of the two heat conducting portions (122) of the two bus bars (120) away from the connecting portions (121) to which they are respectively connected extend relatively and form a first gap, wherein the width range of the first gap is 3-6 mm.

3. The battery module according to claim 2, wherein, The battery module further includes: A first spacer (150) provided between the two pole posts (112) of the battery (110), the first spacer (150) including a first separator plate (151) and a first rib (152) protruding from the surface of the first separator plate (151), the first separator plate (151) being provided between the top cover (111) and the heat conducting portion (122), and the first rib (152) being provided in the first gap; Wherein, the first separator plate (151) is in interference fit between the top cover (111) and the heat conducting portion (122), and the height of the first rib (152) relative to the top cover (111) is greater than or equal to the height of the heat conducting portion (122) relative to the top cover (111).

4. The battery module according to claim 3, characterized in that, The first separator plate (151) is a voltage acquisition plate, a voltage acquisition component (160) is provided on the side of the voltage acquisition plate facing away from the battery (110), and the heat conducting portion (122) presses against the voltage acquisition component (160), wherein the voltage acquisition component (160) is an elastic body.

5. The battery module according to claim 1, characterized in that, The ends of the two heat conducting portions (122) of the two bus bars (120) connected to two adjacent batteries (110) arranged in a first direction away from the connecting portions (121) to which they are respectively connected extend relatively and form a second gap, wherein the width range of the second gap is 3-6 mm.

6. The battery module according to claim 5, wherein The battery module further includes: The second spacer (170) includes a second partition plate (171), a second rib (172), and a third rib (173) protruding from opposite side surfaces of the second partition plate (171). The second partition plate (171) is disposed between the pole columns (112) of two batteries (110) arranged along the first direction, and is disposed between the top cover (111) and the heat conducting portion (122). The second rib (172) is disposed between the side walls of two batteries (110) arranged along the first direction, and the third rib (173) is disposed in the second gap. Wherein, the second spacer (170) is in interference fit between the top cover (111) and the heat conducting portion (122), and the height of the third rib (173) relative to the top cover (111) is greater than or equal to the height of the heat conducting portion (122) relative to the top cover (111).

7. The battery module according to claim 6, characterized in that, The second rib (172) is a temperature acquisition plate, and temperature acquisition components (180) are disposed on at least one side wall of the second rib (172). The temperature acquisition components (180) are pressed against the side wall of the battery (110) opposite thereto.

8. The battery module according to claim 3, wherein The first spacer (150) is an insulating and heat conducting component.

9. The battery module according to claim 1, characterized in that, An insulating and heat conducting layer (140) is covered between the bus bar component (120) and the cold plate (130), and a part of the insulating and heat conducting layer (140) is bent to fit the bent portion of the bus bar component (120) and the side wall of the protrusion (132).

10. An electrical equipment, characterized in that, Comprising the battery module according to any one of claims 1 to 9.

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