Integrated busbar assembly for battery module

Abstract

The utility model relates to an integrated busbar assembly for a battery module, which comprises an integrated busbar, a protective cover and a heat insulation piece, the protective cover covers the integrated busbar, the integrated busbar is detachably connected with the protective cover, the heat insulation piece is arranged on one side, facing the integrated busbar, of the protective cover, and the protective cover is detachably connected with the heat insulation piece. And the pressure release valve is opposite to the pressure release valve of the battery module. According to the integrated busbar assembly for the battery module provided by the utility model, the integrated busbar, the protective cover and the heat insulation piece are integrated, so that the integrated busbar is prevented from being damaged, and meanwhile, the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an integrated busbar assembly for a battery module and a battery module. Background Art

[0002] With the development of economy and the advancement of science and technology, power batteries are widely used in industries such as electric vehicles. In order to ensure that the power battery can work within the specified voltage range and temperature range, it is necessary to collect the voltage signal and temperature signal of each battery cell in the battery module. In the prior art, an integrated busbar is generally used to collect the voltage signal and temperature signal of the battery. The integrated busbar is a battery module collection integrated component. The integrated busbar is an important structure that integrates electrical connection, voltage collection, and temperature collection.

[0003] The existing integrated busbar is usually directly connected to the battery module. After the battery module is put into the box, a module heat insulation is added on the top of the battery module. At the same time, a protective cover is installed on the side of the battery module, and a fireproof cover is installed on the inner top of the cover (corresponding to the position of the battery pressure relief valve). The above solution not only wastes man-hours, but also increases costs. Moreover, before the module heat insulation is installed, the integrated busbar lacks protection, resulting in the welding points and metal of the integrated busbar being exposed. During the operation of the production line, the integrated busbar is prone to collision and scratching, causing damage. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated busbar assembly for a battery module, which integrates an integrated busbar, a protective cover and a heat insulating member into one body to prevent the integrated busbar from being damaged, while improving assembly efficiency and reducing production costs.

[0005] An integrated busbar assembly for a battery module comprises an integrated busbar, a protective cover and a heat insulating member, wherein the protective cover is arranged on the integrated busbar, the integrated busbar and the protective cover are detachably connected, and the heat insulating member is arranged on a side of the protective cover facing the integrated busbar and opposite to the pressure relief valve of the battery module.

[0006] In the above technical solution, the protective cover is provided on the integrated busbar, so that the integrated busbar and the protective cover are integrated into one body, thereby preventing the integrated busbar from being damaged during the operation of the production line. When an object falls, the protective cover effectively prevents the object from directly contacting the integrated busbar, thereby preventing the integrated busbar from being damaged. At the same time, the integrated busbar and the protective cover are detachably connected, so that the entire integrated busbar and the protective cover are easy to install, disassemble and repair. A heat insulating member is provided on the side of the protective cover facing the integrated busbar, and the heat insulating member is opposite to the pressure relief valve of the battery module. The heat insulating member has a fireproof function, and can prevent the airflow from spraying out from the pressure relief valve position to penetrate the PACK protective cover after the battery cell runs out of control and reaches high temperature, thereby causing damage to surrounding personnel or property. The utility model prevents the integrated busbar from being damaged by integrating the integrated busbar, the protective cover and the thermal insulation member into one body, while improving assembly efficiency and reducing production costs.

[0007] Furthermore, the protective cover is provided with extension parts around it, and a plurality of positioning bosses are provided on the peripheral side of the integrated busbar. When the protective cover is connected to the integrated busbar, the positioning bosses abut against the inner side of the extension parts.

[0008] In the above technical solution, by arranging an extension portion around the protective cover and arranging a plurality of spaced positioning bosses on the peripheral side of the integrated busbar, when the protective cover is connected to the integrated busbar, the positioning bosses abut against the inner sides of the extension portions, thereby achieving precise positioning and fixation between the protective cover and the integrated busbar. This design improves the assembly accuracy and stability of the integrated busbar and the protective cover, and reduces performance problems caused by improper assembly.

[0009] Furthermore, at least one buckle is provided at a corner of the integrated busbar, and a positioning buckle matching the buckle is provided on the inner side of the extension portion.

[0010] In the above technical solution, buckles are provided at the corners of the integrated busbar, and positioning buckles are provided on the inner side of the extension portion. The buckles have openings. When the integrated busbar is connected to the protective cover, the positioning buckles extend into the openings, further enhancing the connection stability between the protective cover and the integrated busbar. This design can provide better protection under vibration or impact conditions and reduce the risk of damage to the protective cover and the integrated busbar.

[0011] Furthermore, a groove body is provided on one side of the protective cover close to the integrated busbar, the groove body extends along one side of the length direction of the protective cover, and the heat insulating member is provided in the groove body.

[0012] In the above technical solution, a groove is provided on the protective cover, and the heat insulating member is provided in the groove. This design can ensure that the heat insulating member is stably fixed on the protective cover and is not easy to fall off or shift. At the same time, the design of the groove also facilitates the installation and removal of the heat insulating member, thereby improving the maintenance convenience of the assembly.

[0013] Furthermore, the trough body is provided with a limit block, and the limit block abuts against the thermal insulation component.

[0014] In the above technical solution, a limit block is arranged in the tank body to abut against the thermal insulation component, thereby ensuring that the position of the thermal insulation component in the tank body is stable and will not shift due to vibration or impact, thereby improving the use effect and life of the thermal insulation component.

[0015] Furthermore, the size of the thermal insulation element matches the size of the trough body.

[0016] In the above technical solution, by matching the size of the heat insulating member with the size of the tank body, it can be ensured that the heat insulating member is fully embedded in the tank body without any gaps or voids, thereby improving the heat insulation effect. This design helps prevent heat from leaking from the gap between the heat insulating member and the tank body, further improving the safety of the assembly. At the same time, this design also avoids the installation difficulties and performance degradation caused by size mismatch.

[0017] Furthermore, a boss is formed on a side of the protective cover away from the trough body and corresponding to a position of the trough body.

[0018] In the above technical solution, a boss is formed on the side of the protective cover away from the trough body and corresponding to the position of the trough body. On the one hand, the depth of the trough body is increased to ensure that the thermal insulation component can be tightly connected to the trough body. On the other hand, the overall thickness of the protective cover is reduced to reduce production costs.

[0019] Furthermore, at least one end of the protective cover is provided with a first notch and a second notch, and the first notch is adjacent to the second notch.

[0020] In the above technical solution, the protective cover is provided with a first notch and a second notch, respectively for the wire harness and the connecting piece to pass through, and the connecting piece is used to connect the aluminum bars in series. The first notch and the second notch facilitate the arrangement and connection of the wire harness and the aluminum bar, and improve the electrical connection efficiency of the battery module. At the same time, it also facilitates subsequent maintenance and replacement work.

[0021] Furthermore, the thermal insulation member is a mica sheet.

[0022] In the above technical solution, using mica sheets and other thermal insulation materials as thermal insulation components can ensure that the protective cover has good thermal insulation performance. Mica sheets have the characteristics of high temperature resistance, corrosion resistance, and low thermal conductivity, and can effectively prevent the transfer and diffusion of heat, thereby improving the safety and reliability of the integrated busbar.

[0023] Compared with the prior art, the beneficial effects of the utility model are: by integrating the integrated busbar, the protective cover and the heat insulation into one, the integrated busbar is prevented from being damaged, while the assembly efficiency is improved and the production cost is reduced. A protective cover is provided, and the protective cover is detachably connected to the integrated busbar. The integrated busbar can be protected from damage by foreign objects through the protective cover. During the operation of the production line, when foreign objects fall, the protective cover can effectively prevent the foreign objects from contacting the integrated busbar, and prevent the integrated busbar from being collided or scratched; a heat insulation piece is provided on the side of the protective cover close to the integrated busbar, and the heat insulation piece corresponds to the pressure relief valve of the battery module. The heat insulation piece has a fireproof effect, and can prevent the airflow from spraying out from the pressure relief valve position to penetrate the PACK protective cover after the battery cell loses control of the high temperature, causing damage to the surrounding personnel or property. At the same time, the integrated busbar, the protective cover and the heat insulation piece with signal acquisition function are integrated into one and then connected to the battery module to form a complete battery system. This design not only improves the overall performance and safety of the battery system, but also facilitates the installation, use and maintenance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the exploded structure of an integrated busbar assembly for a battery module according to an embodiment of the utility model.

[0025] Figure 2 It is a schematic structural diagram of a protective cover according to an embodiment of the utility model.

[0026] Figure 3 for Figure 1 A is an enlarged schematic diagram.

[0027] Figure 4 for Figure 2 A magnified schematic diagram of B.

[0028] Figure 5 It is a schematic diagram of the assembly of an integrated busbar assembly for a battery module according to an embodiment of the utility model.

[0029] Figure 6 It is a schematic structural diagram of a battery module according to an embodiment of the utility model.

[0030] Description of Figure Numbers

[0031] 1. Integrated busbar; 1011. Positioning boss; 1012. Buckle; 1012a. Opening;

[0032] 2. Protective cover; 201. Extension portion; 202. Positioning buckle; 203. Groove; 204. Limiting block; 205. Boss; 206. First notch; 207. Second notch;

[0033] 3. Thermal insulation; 4. Wiring harness; 5. Connectors; 6. Battery module; 7. Cover. DETAILED DESCRIPTION

[0034] The integrated busbar assembly and battery module of the utility model for battery modules will be further described in detail below in conjunction with specific embodiments and drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0035] Please refer to Figure 1 and Figure 2 In a preferred embodiment, the integrated busbar assembly for a battery module of the utility model includes an integrated busbar 1, a protective cover 2 and a heat insulating member 3. The protective cover 2 is disposed on the integrated busbar 1. The integrated busbar 1 and the protective cover 2 are detachably connected. The heat insulating member 3 is disposed on a side of the protective cover 2 facing the integrated busbar 1 and opposite to the pressure relief valve of the battery module 6.

[0036] It can be seen from the above technical solution that the protective cover 2 is provided on the integrated busbar 1, so that the integrated busbar 1 and the protective cover 2 are integrated into one body, thereby preventing the integrated busbar 1 from being damaged during the production line operation. When an object falls, the protective cover 2 effectively prevents the object from directly contacting the integrated busbar 1, thereby preventing the integrated busbar 1 from being damaged. At the same time, the integrated busbar 1 and the protective cover 2 are detachably connected, so that the entire integrated busbar 1 and the protective cover 2 are easy to install, disassemble and repair; the protective cover 2 is provided with a heat insulation 3 on the side facing the integrated busbar 1, and the heat insulation 3 is opposite to the pressure relief valve of the battery module. The heat insulation 3 has a fireproof function, and can prevent the airflow from spraying out from the pressure relief valve position to penetrate the PACK protective cover after the battery cell runs out of control and reaches high temperature, thereby causing damage to the surrounding personnel or property. The utility model integrates the integrated busbar 1, the protective cover 2 and the heat insulation 3 into one body, thereby preventing the integrated busbar 1 from being damaged, while improving the assembly efficiency and reducing the production cost.

[0037] In some other embodiments, the size of the integrated busbar 1 is smaller than that of the protective cover 2, and the integrated busbar 1 and the protective cover 2 are interference fit, so that the connection between the integrated busbar 1 and the protective cover 2 is more stable and tight.

[0038] It should be noted that the integrated busbar 1 in the embodiment of the present application can be vacuum-formed, so that the product is thinner, lighter, more flexible, and has higher flatness, which solves the problems of low flatness, heavy weight, and high manufacturing cost of the integrated busbar formed by injection molding, and can effectively reduce the weight and cost of the power battery module.

[0039] Please refer to Figure 1 and Figure 3, illustratively, the protective cover 2 is provided with an extension portion 201 around it, and a plurality of positioning bosses 1011 are provided on the peripheral side of the integrated busbar 1. When the protective cover 2 is connected to the integrated busbar 1, the positioning bosses 1011 abut against the inner side of the extension portion 201. By providing the extension portion 201 around the protective cover 2 and providing a plurality of positioning bosses 1011 arranged at intervals on the peripheral side of the integrated busbar 1, when the protective cover 2 is connected to the integrated busbar 1, the positioning bosses 1011 abut against the inner side of the extension portion 201, thereby achieving precise positioning and fixation between the protective cover 2 and the integrated busbar 1. This design improves the assembly accuracy and stability of the integrated busbar 1 and the protective cover 2, and reduces performance problems caused by improper assembly. At the same time, by connecting the positioning boss 1011 to the protective cover 2, the material of a single positioning boss 1011 and a single installation process are reduced, thereby reducing the cost of the product and the weight of components.

[0040] Please refer to Figure 3 and Figure 4 In this embodiment, at least one buckle 1012 is provided at the corner of the integrated busbar 1, and the buckle 1012 has an opening 1012a. A positioning buckle 202 matching the opening 1012a is provided on the inner side of the extension portion 201. The buckle 1012 is provided at the corner of the integrated busbar 1, and the positioning buckle 202 is provided on the inner side of the extension portion 201. The buckle 1012 has an opening 1012a. When the integrated busbar 1 is connected to the protective cover 2, the positioning buckle 202 extends into the opening 1012a, further enhancing the connection stability between the protective cover 2 and the integrated busbar 1. This design can provide better protection under vibration or impact conditions and reduce the risk of damage to the protective cover 2 and the integrated busbar 1.

[0041] Please refer to Figure 2 and Figure 4 A slot 203 is provided on one side of the protective cover 2 close to the integrated busbar 1. The slot 203 extends along one side of the length direction of the protective cover 2, and the heat insulating member 3 is provided in the slot 203. The slot 203 is provided on the protective cover 2, and the heat insulating member 3 is provided in the slot 203. This design can ensure that the heat insulating member 3 is stably fixed on the protective cover 2 and is not easy to fall off or shift. At the same time, the design of the slot 203 also facilitates the installation and removal of the heat insulating member 3, thereby improving the maintenance convenience of the assembly.

[0042] In this embodiment, the slot body 203 is provided with a limit block 204, and the limit block 204 abuts against the thermal insulation 3. The limit block 204 is arranged in the slot body 203 to abut against the thermal insulation 3, ensuring that the position of the thermal insulation 3 in the slot body 203 is stable and will not be displaced due to vibration or impact, thereby improving the use effect and life of the thermal insulation 3. Exemplarily, there are six limit blocks 204 in this embodiment, which are respectively located at the corners and the middle of the slot body 203, ensuring that the thermal insulation 3 is stably arranged in the slot body and ensuring the thermal insulation effect.

[0043] Specifically, the size of the heat insulating member 3 matches the size of the tank body 203. By matching the size of the heat insulating member 3 with the size of the tank body 203, it can be ensured that the heat insulating member 3 is completely embedded in the tank body 203 without any gaps or voids, thereby improving the heat insulation effect. This design helps prevent heat from leaking from the gap between the heat insulating member 3 and the tank body 203, further improving the safety of the assembly, and at the same time, this design also avoids installation difficulties and performance degradation problems caused by size mismatch.

[0044] Please refer to Figure 1 In this embodiment, a boss 205 is formed on the side of the protective cover 2 away from the trough body 203 and at a position corresponding to the trough body 203. The boss 205 is formed on the side of the protective cover 2 away from the trough body 203 and at a position corresponding to the trough body 203. On the one hand, the depth of the trough body 203 is increased to ensure that the thermal insulation member 3 can be closely connected to the trough body 203. On the other hand, the overall thickness of the protective cover 2 is reduced, thereby reducing the production cost.

[0045] Please refer to Figure 1 and Figure 5 At least one end of the protective cover 2 is provided with a first notch 206 and a second notch 207, the first notch 206 and the second notch 207 are arranged adjacent to each other, the first notch 206 is used for the wire harness 4 to pass through, the second notch 207 is used for the connector 5 to pass through, and the connector 5 is used to connect the aluminum bars in the integrated busbar 1 in series. The first notch 206 and the second notch 207 are arranged on the protective cover 2, respectively for the wire harness 4 and the connector 5 to pass through, which facilitates the arrangement and connection of the wire harness 4 and the aluminum bar, and improves the electrical connection efficiency of the battery module. At the same time, it also facilitates subsequent maintenance and replacement work.

[0046] It should be noted that the thermal insulation member 3 of this embodiment is a mica sheet. Using thermal insulation materials such as mica sheets as the thermal insulation member 3 can ensure that the protective cover has good thermal insulation performance. Mica sheets have the characteristics of high temperature resistance, corrosion resistance, and low thermal conductivity. They can effectively prevent the transfer and diffusion of heat, and improve the safety and reliability of the integrated busbar 1. The mica sheet is formed of mica and glass fiber composite materials, and has high temperature resistance and fire resistance. The design value of the explosion-resistant air pressure strength is less than the pressure strength of the pressure relief valve opening, which does not affect the smooth ejection of high-temperature eruption materials, and has a certain thermal protection effect on the top of the battery module.

[0047] Please refer to Figure 6 The battery module 6 includes a plurality of battery cells arranged side by side, and the integrated busbar 1, the protective cover 2 and the heat insulating member 3 are integrated into one body and electrically connected to the battery module 6. A complete battery system can be formed by combining the integrated busbar 1, the protective cover 2, the heat insulating member 3 and the battery module 6. This design not only improves the overall performance and safety of the battery system, but also facilitates the installation, use and maintenance of the system.

[0048] Meanwhile, the battery module also includes a cover 7, which is arranged on the periphery of the plurality of battery cells. By arranging the cover 7 on the periphery of the battery cells, the battery cells can be prevented from being affected and damaged by the external environment, thereby extending the service life of the battery module 6.

[0049] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An integrated busbar assembly for a battery module, characterized in that: It includes an integrated busbar, a protective cover and a heat insulating member. The protective cover is arranged on the integrated busbar. The integrated busbar and the protective cover are detachably connected. The heat insulating member is arranged on a side of the protective cover facing the integrated busbar and opposite to the pressure relief valve of the battery module.

2. The integrated busbar assembly for a battery module according to claim 1, characterized in that: The protective cover is provided with an extension portion around it, and a plurality of positioning bosses are provided on the peripheral side of the integrated busbar. When the protective cover is connected to the integrated busbar, the positioning bosses abut against the inner side of the extension portion.

3. The integrated busbar assembly for a battery module according to claim 2, characterized in that: At least one buckle is provided at a corner of the integrated busbar, and a positioning buckle matching the buckle is provided on the inner side of the extension portion.

4. The integrated busbar assembly for a battery module according to claim 1, characterized in that: A slot body is provided on one side of the protective cover close to the integrated busbar. The slot body extends along one side of the length direction of the protective cover. The heat insulating member is provided on the slot body.

5. The integrated busbar assembly for a battery module according to claim 4, characterized in that: The trough body is provided with a limit block, and the limit block abuts against the heat insulation component.

6. The integrated busbar assembly for a battery module according to claim 4, characterized in that: The size of the heat insulating member matches the size of the tank body.

7. The integrated busbar assembly for a battery module according to claim 4, characterized in that: A boss is formed on one side of the protection cover away from the slot body and corresponding to the position of the slot body.

8. The integrated busbar assembly for a battery module according to claim 1, characterized in that: At least one end of the protective cover is provided with a first notch and a second notch, and the first notch is adjacent to the second notch.

9. The integrated busbar assembly for a battery module according to claim 1, characterized in that: The heat insulation member is a mica sheet.

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