Battery pack and electric equipment

Abstract

The utility model relates to the technical field of power batteries, in particular to a battery pack which comprises a box body, a cold plate and a connector assembly, the box body comprises a frame body and a containing space defined by the frame body, the containing space comprises a battery bin for containing a battery module, a first bin and a second bin, the first bin and the second bin are arranged on the two opposite sides of the battery bin, and the cold plate is arranged at the bottom of the box body. The connector assembly is arranged in the first bin and communicates with the cold plate, and reinforcing ribs surrounding the connector assembly are arranged in the first bin. According to the battery pack, the size can be reduced, the cost is reduced, and the strength of the box body can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and specifically provides a battery pack and electrical equipment. Background Art

[0002] With the development of society, new energy vehicles (NEVs) such as lithium batteries are being vigorously promoted to reduce atmospheric pollution from vehicle exhaust. As the power source of these NEVs, onboard batteries dissipate significant amounts of heat during operation, necessitating a dedicated water cooling system within the battery pack to control the battery temperature. As demands for power and range for NEVs continue to rise, battery modules are also increasing in size, increasing the requirements for water cooling system layout. Conventional battery pack cooling systems typically consist of three main components: a water quick-change unit, water pipes, and a cold plate. The water quick changer serves as the interface between the battery pack and the entire vehicle and has a large ability to absorb tolerances. The cold plate is a component that directly cools the battery cells, and its cooling efficiency directly affects the cooling effect of the battery cells. The water pipe, as a connecting component connecting the water quick changer and the cold plate, is mainly used to absorb the tolerances between the water quick changer and the cold plate and cannot directly cool the battery cells. In addition, the setting of the water pipe and the arrangement of the pipe connections require space. The water pipes occupy a large space, which is not conducive to the trend of miniaturization and lightweighting. In addition, the setting of the water pipes and pipelines also increases costs. The setting of the water pipes and the arrangement of the pipelines require a cavity in the box, which leads to low strength of the box.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provide a new battery pack that can reduce the volume, reduce the cost and enhance the strength of the box.

[0005] The utility model provides a battery pack, comprising:

[0006] The box body includes a frame and a receiving space formed by the frame, wherein the receiving space includes a battery compartment for accommodating the battery module and a first compartment and a second compartment provided on opposite sides of the battery compartment;

[0007] A cold plate, arranged at the bottom of the box;

[0008] a connector assembly, disposed in the first compartment and in communication with the cold plate;

[0009] Wherein, reinforcing ribs surrounding the joint assembly are provided in the first compartment.

[0010] When adopting the above technical solution, the connector assembly of the present invention is located within the first compartment and communicates with the cold plate, eliminating the inlet and outlet water pipes and quick-connect connectors, allowing the connector assembly to connect directly to the cold plate. This eliminates the need for water pipes and quick-connect connectors, reducing the number of components used, volume, and cost. Ribs surrounding the connector assembly are provided within the first compartment. Adding these ribs within the cavity enhances the mechanical strength of the box and makes the battery pack structure more reliable.

[0011] In the preferred technical solution of the above battery pack, the connector assembly includes a connector and a pipe, and the pipe is connected to the cold plate.

[0012] When the above technical solution is adopted, the piping is directly connected and communicated with the cold plate, and the joint is communicated with the vehicle end assembly, so that the structure is simple and the connection reliability is high.

[0013] In the preferred technical solution of the above battery pack, the connector includes a main body, an insert provided on a first side of the main body, and a connecting tube provided on a second side of the main body, and the main body is installed in the first compartment.

[0014] When the above technical solution is adopted, the connector is installed in the first compartment, which not only facilitates assembly with the vehicle-end component, but also makes full use of the space in the box so that the connector assembly and the battery module will not affect each other during assembly.

[0015] In the preferred technical solution of the above battery pack, the insert is engaged with the pipe and the connector is in conduction with the pipe.

[0016] When the above technical solution is adopted, the clamping cooperation between the insert and the pipe makes the assembly and disassembly of the joint and the pipe convenient and the connection reliable.

[0017] In a preferred technical solution of the above battery pack, the cold plate includes a water inlet and a water outlet, and the water inlet and the water outlet are arranged along the arrangement direction of the first compartment and the second compartment.

[0018] When the above technical solution is adopted, the water inlet and the water outlet are arranged along the arrangement direction of the first compartment and the second compartment, so that the axis connecting the water inlet and the water outlet is consistent with the length direction of the vehicle body, which not only makes full use of the space of the first compartment and improves the space utilization rate, but also, the water inlet and the water outlet are arranged in this way, the flow channel of the cold plate is evenly distributed, and the coolant flows through the same distance on the left and right sides of the cold plate, so that the flow resistance is consistent, and thus the flow rate is consistent, so that the temperature uniformity of the battery module is also better.

[0019] In the preferred technical solution of the above battery pack, there are two connecting tubes, one of which is close to the battery compartment and the other is far away from the battery compartment.

[0020] When the above technical solution is adopted, the connecting pipe is connected to the vehicle-end component and communicated with the piping. The distances between the two connecting pipes and the battery compartment are unequal. The connecting pipes are communicated with the water inlet and outlet of the cold plate. This allows the flow channel of the cold plate to be evenly distributed, and the coolant flows through the same distance on the left and right sides of the cold plate, resulting in consistent flow resistance and thus consistent flow rate. Therefore, the temperature uniformity of the battery module is also better.

[0021] In the preferred technical solution of the above battery pack, the connector assembly is located in the middle of the first compartment, and the reinforcing ribs are symmetrically arranged along the axis connecting the connecting tubes.

[0022] When the above technical solution is adopted, the reinforcing ribs are located in the first compartment, which can strengthen the mechanical strength of the box. The symmetrical arrangement of the reinforcing ribs and the convenience of forming can not only ensure sufficient strength, but also improve the rigidity of the box. At the same time, it can have uniform support and stress distribution in different directions, which can reduce the occurrence of stress concentration.

[0023] In the preferred technical solution of the above-mentioned battery pack, the first compartment includes a first wall close to the battery compartment, a second wall away from the battery compartment, and a third wall and a fourth wall connecting the first wall and the second wall, and the reinforcing rib connects at least two of the first wall, the second wall, the third wall and the fourth wall.

[0024] When the above technical solution is adopted, the reinforcing ribs are connected to two of the first wall, the second wall, the third wall and the fourth wall of the first bin, which not only increases the strength of the box body but also ensures the stability of the connection.

[0025] In the preferred technical solution of the above battery pack, the height of the reinforcing rib is not higher than the height of the first wall and not lower than half the height of the second wall.

[0026] When adopting the above technical solution, the height of the reinforcing rib is not higher than the height of the first wall and not lower than half the height of the second wall. It can not only play a better reinforcing role, but also does not occupy vertical space when assembling the battery pack, which facilitates assembly and saves space.

[0027] In a second aspect, the present invention provides an electrical device comprising the battery pack described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a structural diagram of the box and the cold plate of the utility model;

[0030] Figure 2 This is a schematic diagram of the installation structure of the connector assembly of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the joint assembly and the cold plate of the utility model;

[0032] Figure 4 It is an exploded view of the connector assembly of the present invention.

[0033] Reference numerals:

[0034] 1. Box body; 11. Frame; 12. Battery compartment; 13. Second compartment; 14. First compartment; 141. Reinforcement rib; 142. First wall; 143. Second wall; 144. Third wall; 145. Fourth wall; 15. Expansion beam;

[0035] 2. Cold plate; 21. Water inlet; 22. Water outlet;

[0036] 3. Connector assembly; 31. Pipe; 310. Pipe body; 311. Sleeve; 3111. Clamping groove; 3112. Receiving cavity; 32. Connector; 320. Main body; 321. Insert; 3210. Main body; 3211. Clamping portion; 322. Connecting pipe;

[0037] L. Axis connection line. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0039] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," "back," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "connect," "dispose," and "install" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0041] like Figures 1 to 4 As shown, in the first aspect, the battery pack of the present invention includes a box body 1, a cold plate 2 and a connector assembly 3. The box body 1 includes a frame body 11 and a receiving space formed by the frame body 11. The receiving space includes a battery compartment 12 for accommodating a battery module and a first compartment 14 and a second compartment 13 provided on opposite sides of the battery compartment 12. The cold plate 2 is provided at the bottom of the box body 1. The connector assembly 3 is provided in the first compartment 14 and is connected to the cold plate 2. The first compartment 14 is provided with a reinforcing rib 141 surrounding the connector assembly 3.

[0042] The connector assembly 3 of the present invention is located within the first compartment 14 and communicates with the cold plate 2. This eliminates the need for water pipes and quick-connect connectors, allowing the connector assembly 3 to connect directly to the cold plate 2. This eliminates the need for water pipes and quick-connect connectors, reducing the number of components, size, and cost. Reinforcing ribs 141 surrounding the connector assembly 3 are provided within the first compartment 14. Adding these ribs to the cavity enhances the mechanical strength of the box 1, making the battery pack structure more reliable.

[0043] like Figures 1 to 2 As shown, the box body 1 is welded together by die-casting parts and profile parts. There are two die-casting parts and two profile parts. The die-casting parts are arranged on the front and rear sides of the vehicle body and correspond to the positions of the front and rear of the vehicle, that is, one die-casting part is located in the front direction of the vehicle and the other is located in the rear direction of the vehicle. The first compartment 14 and the second compartment 13 are arranged on the die-casting part. The die-casting part also includes an expansion beam 15 that is directly or indirectly in contact with the battery module to support the battery module.

[0044] like Figures 3 and 4 As shown, the connector assembly 3 includes a connector 32 and a piping 31. The piping 31 is connected to the cold plate 2. The piping 31 is directly connected and communicated with the cold plate 2. The connector 32 is communicated with the vehicle-end assembly, making the structure simple and the connection reliability high. The connector 32 includes a main body 320, an insert 321 provided on the first side of the main body 320, and a connecting pipe 322 provided on the second side of the main body 320. The main body 320 is installed in the first compartment 14, which is not only convenient for assembly with the vehicle-end assembly, but also can make full use of the space of the box 1, so that the connector assembly 3 and the battery module will not affect each other during assembly. The insert 321 is clamped and matched with the piping 31, and the connector 32 is connected to the piping 31. The clamping and matching of the insert 321 and the piping 31 makes the connector 32 and the piping 31 easy to assemble and disassemble and the connection reliable.

[0045] Reference Figures 3 and 4The cold plate 2 includes a water inlet 21 and a water outlet 22, which are arranged along the arrangement direction of the first compartment 14 and the second compartment 13, so that the axis line L of the water inlet 21 and the water outlet 22 is consistent with the length direction of the vehicle body, which not only makes full use of the space of the first compartment 14 and improves the space utilization rate, but also, the water inlet 21 and the water outlet 22 are arranged in this way, so that the flow channel of the cold plate 2 is evenly distributed, and the coolant flows through the same distance on the left and right sides of the cold plate 2, so that the flow resistance is consistent, thereby making the flow rate consistent, so that the temperature uniformity of the battery module is also better.

[0046] Reference Figures 1 to 2 There are two connecting pipes 322, one of which is close to the battery compartment 12 and the other is far away from the battery compartment 12. The connecting pipes 322 are connected to the vehicle-end assembly and communicate with the piping 31. The distances between the two connecting pipes 322 and the battery compartment 12 are not equal. The connecting pipes 322 are connected to the water inlet 21 and the water outlet 22 of the cold plate 2. In this way, the flow channel of the cold plate 2 can be evenly distributed, and the coolant flows through the same distance on the left and right sides of the cold plate 2, so that the flow resistance is consistent, thereby making the flow consistent, so that the temperature uniformity of the battery module is also better.

[0047] Reference Figure 2 The joint assembly 3 is located in the middle position of the first compartment 14, and the reinforcing ribs 141 are symmetrically arranged along the axial line L of the connecting pipe 322. The reinforcing ribs 141 are located in the first compartment 14, which can play a role in reinforcing the mechanical strength of the box body 1. The symmetrical arrangement of the reinforcing ribs 141 is convenient for molding, which can not only ensure sufficient strength, but also improve the rigidity of the box body 1. At the same time, it can have uniform support and stress distribution in different directions, which can reduce the occurrence of stress concentration.

[0048] Reference Figures 1 to 2The first compartment 14 includes a first wall 142 close to the battery compartment 12, a second wall 143 away from the battery compartment 12, and a third wall 144 and a fourth wall 145 connecting the first wall 142 and the second wall 143. The reinforcing rib 141 connects at least two of the first wall 142, the second wall 143, the third wall 144, and the fourth wall 145, which not only increases the strength of the box body 1 but also ensures the stability of the connection. The height of the reinforcing rib 141 is not higher than the height of the first wall 142 and not lower than half the height of the second wall 143. It not only plays a good reinforcing role, but also does not occupy vertical space when assembling the battery pack, making assembly convenient and space-saving. In this embodiment, the horizontal projection of the first compartment 14 is roughly an isosceles trapezoid, and the third wall 144 and the fourth wall 145 are the two legs of the trapezoid and are symmetrically arranged along the axis line L. There are multiple reinforcing ribs 141 and they are arranged in strip shape. Of course, they can also be in other shapes such as blocks or columns, as long as the reinforcing ribs 141 are connected in the first compartment 14. One of the reinforcing ribs 141 is consistent with the setting direction of the third wall 144 or the fourth wall 145, and encloses a diamond-shaped area with other reinforcing ribs 141. Of course, they can also be in other shapes such as rectangles and polygons.

[0049] In the second aspect, the electric device of the present invention includes the battery pack of the first aspect. The electric device of this technical solution includes the battery pack of any technical solution of the present invention, and thus has all the technical effects of the battery pack of any technical solution of the present invention.

[0050] It should be noted that the above preferred embodiments are only used to illustrate the principles of the present invention and are not intended to limit the scope of protection of the present invention. Without departing from the principles of the present invention, those skilled in the art may adjust the above configuration so that the present invention can be applied to more specific application scenarios.

[0051] Of course, the above-mentioned replaceable implementations, as well as the replaceable implementations and the preferred implementations, can be used in a cross-functional manner to combine new implementations to suit more specific application scenarios.

[0052] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: include: The box body includes a frame and a receiving space formed by the frame, wherein the receiving space includes a battery compartment for accommodating the battery module and a first compartment and a second compartment provided on opposite sides of the battery compartment; a cold plate, arranged at the bottom of the box; a connector assembly, disposed in the first compartment and in communication with the cold plate; Wherein, reinforcing ribs surrounding the joint assembly are provided in the first compartment.

2. The battery pack according to claim 1, wherein: The joint assembly includes a joint and a pipe, and the pipe is connected to the cold plate.

3. The battery pack according to claim 2, wherein: The joint includes a main body, an insert provided on a first side of the main body, and a connecting pipe provided on a second side of the main body. The main body is installed in the first bin.

4. The battery pack according to claim 3, wherein: The insert is clamped and matched with the pipe, and the joint is in conduction with the pipe.

5. The battery pack according to claim 1, wherein: The cold plate includes a water inlet and a water outlet, and the water inlet and the water outlet are arranged along an arrangement direction of the first bin and the second bin.

6. The battery pack according to claim 3, characterized in that: There are two connecting pipes, one of which is close to the battery compartment and the other is far away from the battery compartment.

7. The battery pack according to claim 6, characterized in that: The joint assembly is located in the middle of the first compartment, and the reinforcing ribs are symmetrically arranged along the axis connecting the connecting pipes.

8. The battery pack according to claim 1, wherein: The first compartment includes a first wall close to the battery compartment, a second wall away from the battery compartment, and a third wall and a fourth wall connecting the first wall and the second wall, and the reinforcing rib connects at least two of the first wall, the second wall, the third wall and the fourth wall.

9. The battery pack according to claim 1, wherein: The height of the reinforcing rib is not higher than the height of the first wall and not lower than half the height of the second wall.

10. An electrical device, characterized in that: Comprising the battery pack according to any one of claims 1 to 9.

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