Battery pack

Abstract

Provided is a battery pack (100), comprising: a case (10), wherein a mounting cavity is formed in the case (10), an opening in communication with the mounting cavity is formed at the top of the case (10), and a first protrusion (11) is formed on at least part of a peripheral edge of the opening; a bracket (20), wherein the bracket (20) is arranged around the peripheral edge of the opening, and is provided with a plurality of second protrusions (21), the second protrusions (21) being connected to the first protrusion (11); and a first cold plate (30), wherein the first cold plate (30) is arranged on the bracket (20). The battery pack (100) is provided with the first protrusion (11) and the second protrusions (21), such that connection between the support (20) and the case (10) can be facilitated, an improvement in the mounting efficiency of the bracket (20) and the case (10) is facilitated, the connection strength of the bracket (20) and the case (10) can be increased, and the connection strength between the first cold plate (30) and the case (10) can thus be ensured.

Description

battery pack

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. CN202420868155.6, filed on April 24, 2024, entitled "Battery Pack", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery pack manufacturing technology, and in particular to a battery pack. Background Technology

[0004] In existing solutions, the cold plate of the battery pack is usually fixed to the housing by a bracket. However, the connection between the existing bracket and the housing is complicated, which is not conducive to improving the installation efficiency of the bracket and the housing.

[0005] Application content

[0006] In view of this, the purpose of this application is to provide a battery pack that can improve the installation efficiency of the bracket and the housing.

[0007] This application provides a battery pack, comprising: a housing, wherein an installation cavity is formed within the housing, and an open opening communicating with the installation cavity is formed on the top of the housing, and a first protrusion is formed on at least a portion of the periphery of the open opening; a bracket, wherein the bracket is arranged around the periphery of the open opening, and a plurality of second protrusions are provided on the bracket, the second protrusions being connected to the first protrusions; and a first cold plate, wherein the first cold plate is disposed on the bracket.

[0008] Beneficial effects: By setting the first and second protrusions, the connection between the bracket and the housing can be facilitated, which can improve the installation efficiency of the bracket and the housing. At the same time, the connection strength between the bracket and the housing can be increased, thereby ensuring the connection strength between the first cold plate and the housing.

[0009] In one optional embodiment, the first protrusion extends toward the mounting cavity, and there are multiple first protrusions arranged at intervals along the circumference of the opening. The second protrusion extends toward the periphery of the opening, and there are multiple second protrusions arranged at intervals along the circumference of the bracket. The number of first protrusions and second protrusions corresponds one-to-one.

[0010] In one alternative embodiment, the second protrusion overlaps the first protrusion, and the second protrusion is screwed to the first protrusion.

[0011] In one alternative embodiment, the bracket is formed as a rectangular ring, and a first reinforcing beam is formed on the bracket, with both ends of the first reinforcing beam connected to the bracket.

[0012] In one alternative embodiment, a perforation is formed on the bracket, the perforation penetrating the bracket along the thickness direction of the bracket, so that the wiring harness inside the mounting cavity exits through the perforation.

[0013] In one alternative embodiment, a plurality of second reinforcing beams are formed inside the box, and the plurality of second reinforcing beams are arranged at intervals inside the box.

[0014] In one alternative embodiment, at least one of the second reinforcing beams is formed as a reinforcing plate, the reinforcing plate extending vertically, and the top of the reinforcing plate supporting the first cold plate.

[0015] In one optional embodiment, an end plate is provided between the reinforcing plate and the first cold plate, the lower end of the end plate is connected to the reinforcing plate, a boss is formed on the end plate, the boss extends toward the first cold plate, and the upper end of the boss abuts against the lower surface of the first cold plate.

[0016] In one optional embodiment, there are multiple end plates, which are arranged sequentially along the length of the reinforcing plate.

[0017] In one optional embodiment, the battery pack further includes a first battery module and a second battery module, wherein the first battery module is supported on the first cold plate and the second battery module is disposed within the mounting cavity. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of a battery pack according to an embodiment of this application;

[0020] Figure 2 is an exploded view of the battery pack shown in Figure 1;

[0021] Figure 3 is a schematic diagram of the battery pack shown in Figure 2, excluding the bracket and the first cold plate;

[0022] Figure 4 is a schematic diagram of the battery pack shown in Figure 3 excluding the end plate;

[0023] Figure 5 is a schematic diagram of the bracket shown in Figure 2;

[0024] Figure 6 is a schematic diagram of the end plate shown in Figure 3.

[0025] Numbering in the diagram: 100-Battery pack; 10-Box body; 11-First protrusion; 12-Second reinforcing beam; 121-Reinforcing plate; 20-Bracket; 21-Second protrusion; 22-First reinforcing beam; 23-Perforation; 30-First cold plate; 40-End plate; 41-Boss; 50-Second cold plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The battery pack 100 according to an embodiment of the present application is described below with reference to Figures 1 to 6.

[0028] Referring to Figures 1, 2 and 5, a battery pack 100 according to an embodiment of this application includes: a housing 10, a bracket 20 and a first cold plate 30.

[0029] Specifically, an installation cavity is formed inside the housing 10, and an open opening communicating with the installation cavity is formed on the top of the housing 10. At least a portion of the periphery of the open opening is formed with a first protrusion 11. That is, the first protrusion 11 can be formed on a portion of the periphery of the open opening, or the first protrusion 11 can be formed on the entire periphery of the open opening. The bracket 20 is arranged around the periphery of the open opening, and a plurality of second protrusions 21 are provided on the bracket 20. The second protrusions 21 are connected to the first protrusions 11. The first cold plate 30 is provided on the bracket 20.

[0030] For example, as shown in Figures 1, 2 and 5, the upper part of the housing 10 is open to form an opening, the interior of the housing 10 forms an installation cavity, the bracket 20 extends around the periphery of the opening, the second protrusion 21 is connected to the first protrusion 11, and the first cold plate 30 is connected to the bracket 20.

[0031] When assembling the battery pack 100, first place the bracket 20 in the open position, then connect the second protrusion 21 to the first protrusion 11, and finally connect the first cold plate 30 to the bracket 20. At this time, the battery pack 100 is assembled.

[0032] The battery pack 100 of this application is provided with a first protrusion 11 and a second protrusion 21. The first protrusion 11 and the second protrusion 21 cooperate to facilitate the connection between the bracket 20 and the housing 10, thereby improving the installation efficiency of the bracket 20 and the housing 10. At the same time, the cooperation between the first protrusion 11 and the second protrusion 21 can increase the connection strength between the bracket 20 and the housing 10, preventing the bracket 20 from separating from the housing 10, thereby ensuring the connection strength between the first cold plate 30 and the housing 10.

[0033] According to the battery pack 100 of the embodiment of this application, the first protrusion 11 and the second protrusion 21 are provided, which can facilitate the connection between the bracket 20 and the housing 10, improve the installation efficiency of the bracket 20 and the housing 10, and increase the connection strength between the bracket 20 and the housing 10, thereby ensuring the connection strength between the first cold plate 30 and the housing 10.

[0034] According to some embodiments of this application, referring to Figures 4 and 5, the first protrusion 11 extends toward the mounting cavity, and there are multiple first protrusions 11, that is, the number of first protrusions 11 can be two, three, four or more. Multiple first protrusions 11 are arranged at intervals along the circumference of the opening. The second protrusion 21 extends toward the circumference of the opening, and there are multiple second protrusions 21, that is, the number of second protrusions 21 can be two, three or four or more. Multiple second protrusions 21 are arranged at intervals along the circumference of the bracket 20. The number of first protrusions 11 and second protrusions 21 correspond one-to-one.

[0035] In this way, the multiple first protrusions 11 and multiple second protrusions 21 can further increase the connection strength between the bracket 20 and the housing 10, thereby further preventing the bracket 20 from separating from the housing 10, and thus ensuring the connection strength between the first cold plate 30 and the housing 10. At the same time, the first protrusions 11 and the second protrusions 21 are connected in the mounting cavity, thereby preventing the first protrusions 11 and the second protrusions 21 from protruding to the outside of the housing 10, thereby reducing the volume of the housing 10 and facilitating the transportation of the housing 10.

[0036] For example, as shown in Figures 4 and 5, two first protrusions 11 are provided on the left periphery of the open opening, and four first protrusions 11 are provided on the right periphery of the open opening. The first protrusions 11 extend horizontally toward the mounting cavity. Two second protrusions 21 are provided on the left side of the bracket 20, and four second protrusions 21 are provided on the right side of the bracket 20. The second protrusions 21 extend horizontally toward the periphery of the open opening.

[0037] According to some optional embodiments of this application, referring to FIG1, the second protrusion 21 overlaps the first protrusion 11, and the second protrusion 21 and the first protrusion 11 are screwed together. Thus, this connection form has a simple structure, low cost, and is easy to use in mass production.

[0038] According to some optional embodiments of this application, referring to Figures 1 and 5, the bracket 20 is formed as a rectangular ring, and a first reinforcing beam 22 is formed on the bracket 20, with both ends of the first reinforcing beam 22 connected to the bracket 20. Thus, this bracket 20 has a simple structure and is easy to manufacture. At the same time, the first reinforcing beam 22 can strengthen the bracket 20 and prevent damage to the bracket 20.

[0039] For example, as shown in Figures 1 and 5, a first reinforcing beam 22 is provided at the middle position in the left-right direction of the bracket 20. The first reinforcing beam 22 extends in the front-back direction, and the front and rear ends of the first reinforcing beam 22 are connected to the bracket 20.

[0040] According to some optional embodiments of this application, referring to FIG5, a through hole 23 is formed on the bracket 20. The through hole 23 penetrates the bracket 20 along the thickness direction (vertical direction as shown in FIG5) so that the wiring harness inside the mounting cavity can pass through the through hole 23. Thus, the through hole 23 can facilitate the wiring harness to pass through the mounting cavity, thereby facilitating the connection between the battery module inside the mounting cavity and the outside of the housing 10.

[0041] For example, as shown in Figure 5, the perforation 23 extends from the outer edge of the bracket 20 toward the interior of the bracket 20, and the perforation 23 penetrates the bracket 20 in the vertical direction. Two perforations 23 are provided.

[0042] According to some embodiments of this application, referring to Figures 3 and 4, a plurality of second reinforcing beams 12 are formed inside the box body 10. That is, there are two, three, four or more second reinforcing beams 12 inside the box body 10, and the plurality of second reinforcing beams 12 are arranged at intervals inside the box body 10. Thus, the reinforcing beams can strengthen the strength of the box body 10 and prevent damage to the box body 10. At the same time, the plurality of reinforcing beams can further strengthen the strength of the box body 10.

[0043] For example, as shown in Figures 3 and 4, the second reinforcing beam 12 extends in the front-to-back direction, and three second reinforcing beams 12 are formed inside the box body 10. The three reinforcing beams are arranged at intervals in the left-to-right direction.

[0044] According to some optional embodiments of this application, referring to Figures 3 and 4, at least one second reinforcing beam 12 is formed as a reinforcing plate 121, which extends vertically and supports the first cold plate 30 at its top. Thus, the reinforcing plate 121 can support the first cold plate 30, thereby preventing the first cold plate 30 from deforming under stress and ensuring the service life of the first cold plate 30.

[0045] For example, as shown in Figures 3 and 4, the middle second reinforcing beam 12 is formed as a reinforcing plate 121, which extends toward the first cold plate 30.

[0046] According to some optional embodiments of this application, referring to Figures 3, 4 and 6, an end plate 40 is provided between the reinforcing plate 121 and the first cold plate 30. The lower end of the end plate 40 (as shown in Figure 3) is connected to the reinforcing plate 121. A boss 41 is formed on the end plate 40. The boss 41 extends toward the first cold plate 30, and the upper end of the boss 41 (as shown in Figure 3) abuts against the lower surface of the first cold plate 30.

[0047] In this way, the end plate 40 can protect the end of the battery module, thereby preventing damage to the battery module. At the same time, the boss 41 abuts against the first cold plate 30, eliminating the need for the entire upper end of the end plate 40 to abut against the first cold plate 30, thereby reducing the material used in the end plate 40 and thus reducing the manufacturing cost of the end plate 40.

[0048] For example, as shown in Figures 3, 4 and 6, the lower end of the end plate 40 is snapped onto the reinforcing plate 121, and the upper end of the end plate 40 has an upwardly extending boss 41. The length of the boss 41 is less than the length of the end plate 40, and the upper end of the boss 41 abuts against the lower surface of the first cold plate 30.

[0049] According to some optional embodiments of this application, referring to Figures 3 and 4, the number of end plates 40 is multiple, that is, the number of end plates 40 can be two, three, four or more, and the multiple end plates 40 are arranged sequentially along the length direction of the reinforcing plate 121 (as shown in Figure 4, the front-back direction of the reinforcing plate 121). Therefore, the number of end plates 40 can be adjusted according to actual needs, thereby increasing the freedom in the design of the length of the end plates 40.

[0050] According to some embodiments of this application, referring to FIG1, the battery pack 100 further includes a first battery module and a second battery module. The first battery module is supported on a first cold plate 30, and the second battery module is disposed in the mounting cavity. Thus, the first battery module and the second battery module form a double-layer module, thereby increasing the energy density of the battery pack 100 and ensuring the battery pack 100's energy storage capacity. Simultaneously, the first cold plate 30 can cool the first battery module and the second battery module, thereby effectively preventing thermal runaway of the first battery module and the second battery module.

[0051] Furthermore, as shown in Figures 1 and 3, the battery pack 100 may further include a second cold plate 50, which is disposed at the bottom of the mounting cavity, and the second battery module is supported on the second cold plate 50. Thus, the second cold plate 50 can perform heat exchange on the second battery module, thereby further preventing thermal runaway of the second battery module and ensuring the safe use of the battery pack 100.

[0052] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims. Industrial applicability

[0053] The battery pack provided in this application, by providing a first protrusion and a second protrusion, can facilitate the connection between the bracket and the housing, improve the installation efficiency of the bracket and the housing, and increase the connection strength between the bracket and the housing, thereby ensuring the connection strength between the first cold plate and the housing.

Claims

1. A battery pack, characterized in that, include: A housing, wherein an installation cavity is formed inside the housing, and an open opening communicating with the installation cavity is formed on the top of the housing, and a first protrusion is formed on at least a portion of the periphery of the open opening; A bracket is provided around the periphery of the opening, and the bracket is provided with a plurality of second protrusions, the second protrusions being connected to the first protrusions; The first cold plate is disposed on the bracket.

2. The battery pack according to claim 1, characterized in that, The first protrusion extends toward the mounting cavity, and there are multiple first protrusions, which are arranged at circumferential intervals along the opening. The second protrusion extends toward the periphery of the opening, and there are multiple second protrusions. The multiple second protrusions are arranged at intervals along the circumference of the bracket, and the number of the first protrusions corresponds one-to-one with the number of the second protrusions.

3. The battery pack according to claim 2, characterized in that, The second protrusion overlaps the first protrusion, and the second protrusion is screwed to the first protrusion.

4. The battery pack according to claim 1, characterized in that, The bracket is formed in a rectangular ring shape, and a first reinforcing beam is formed on the bracket, with both ends of the first reinforcing beam connected to the bracket.

5. The battery pack according to claim 1, characterized in that, The bracket has a through hole that extends through the bracket along its thickness direction, so that the wiring harness inside the mounting cavity can exit through the through hole.

6. The battery pack according to claim 1, characterized in that, Multiple second reinforcing beams are formed inside the box, and the multiple second reinforcing beams are arranged at intervals inside the box.

7. The battery pack according to claim 6, characterized in that, At least one of the second reinforcing beams is formed as a reinforcing plate, the reinforcing plate extending vertically, and the top of the reinforcing plate supporting the first cold plate.

8. The battery pack according to claim 7, characterized in that, An end plate is provided between the reinforcing plate and the first cold plate. The lower end of the end plate is connected to the reinforcing plate. A boss is formed on the end plate, which extends toward the first cold plate, and the upper end of the boss abuts against the lower surface of the first cold plate.

9. The battery pack according to claim 8, characterized in that, The number of end plates is multiple, and the multiple end plates are arranged sequentially along the length direction of the reinforcing plate.

10. The battery pack according to claim 1, characterized in that, Also includes: A first battery module and a second battery module, wherein the first battery module is supported on the first cold plate and the second battery module is disposed in the mounting cavity.

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