Battery box and battery system

Abstract

The utility model provides a battery box body and a battery system. The battery box comprises a box body, the box body is provided with an accommodating cavity, and the top of the box body is provided with a mounting opening communicated with the accommodating cavity; the multiple supporting blocks are located in the containing cavity and arranged on the bottom face of the box body at intervals; the liquid cooling assembly is detachably arranged on the bottom surface of the box body, the liquid cooling assembly is provided with at least one first avoiding opening corresponding to the multiple supporting blocks, each first avoiding opening is internally provided with at least one supporting block, and the supporting blocks protrude out of the top surface of the liquid cooling assembly or are flush with the top surface of the liquid cooling assembly. According to the utility model, the problem of high maintenance cost caused by the integral structure of the liquid cooling plate and the battery box body in the prior art is solved.

Description

Technical Field

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

[0002] Currently, most battery systems use a CTP structure, typically integrating a liquid cooling plate into the lower case. This design significantly increases the cost of the lower case. Furthermore, since the case and the liquid cooling plate are integrated, damage to the case's side beams, bottom guard plate, or other structures requires replacement of the entire battery case, and thus the liquid cooling system, leading to increased maintenance costs.

[0003] Therefore, the prior art has the problem of high maintenance cost due to the integrated structure of the liquid cooling plate and the battery box. Utility Model Content

[0004] The main purpose of the present utility model is to provide a battery box and a battery system to solve the problem of high maintenance cost caused by the liquid cooling plate and the battery box being an integrated structure in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a battery box is provided, comprising: a box body, the box body having a accommodating cavity, and the top of the box body having an installation opening connected to the accommodating cavity; a support block, a plurality of support blocks, the plurality of support blocks are located in the accommodating cavity and are arranged at intervals on the bottom surface of the box body; a liquid cooling assembly, the liquid cooling assembly is detachably arranged on the bottom surface of the box body, and the liquid cooling assembly is provided with at least one first avoidance opening corresponding to the plurality of support blocks, and at least one support block is arranged in each first avoidance opening, and the support block protrudes from the top surface of the liquid cooling assembly or is flush with the top surface of the liquid cooling assembly.

[0006] Furthermore, the liquid cooling assembly includes: a harmonica tube group, with at least two harmonica tube groups; a liquid collecting pipe, with at least two liquid collecting pipes, the two ends of the harmonica tube group are respectively connected to different liquid collecting pipes, and any two adjacent harmonica tube groups and the liquid collecting pipes form a first avoidance opening.

[0007] Furthermore, the harmonica pipe group and the supporting block are parallel to each other.

[0008] Furthermore, there is an avoidance gap between the two ends of the support block in the length direction and the circumferential inner side wall of the box body, so as to avoid the liquid collecting pipe.

[0009] Furthermore, there are multiple harmonica tube groups, and the multiple harmonica tube groups are arranged at equal intervals; and / or the harmonica tube groups located at both ends of the arrangement direction of the multiple harmonica tube groups and the liquid collecting pipe and the circumferential inner wall of the box body form a second avoidance opening, and at least one supporting block is arranged in each second avoidance opening.

[0010] Furthermore, the liquid collecting pipe is close to the installation opening relative to the harmonica pipe group.

[0011] Furthermore, the battery box also includes a thermally conductive adhesive layer, which is arranged on the top surface of the liquid cooling component.

[0012] Furthermore, the battery box body also includes supporting foam, and the bottom surface of the box body is provided with supporting foam at least in the portion corresponding to the liquid cooling assembly.

[0013] According to another aspect of the present invention, a battery system is provided, comprising the above-mentioned battery box.

[0014] Furthermore, the battery system further includes a battery pack, and the length direction of the support block of the battery box is the same as the thickness direction of the battery cell of the battery pack.

[0015] Applying the technical solution of the present utility model, the battery case in this application includes a case body, a support block and a liquid cooling assembly, the case body has a accommodating cavity, and the top of the case body has a mounting opening connected to the accommodating cavity; there are multiple support blocks, and the multiple support blocks are located in the accommodating cavity and are arranged at intervals on the bottom surface of the case body; the liquid cooling assembly is detachably arranged on the bottom surface of the case body, and the liquid cooling assembly is provided with at least one first avoidance opening corresponding to the multiple support blocks, and at least one support block is provided in each first avoidance opening, and the support block protrudes from the top surface of the liquid cooling assembly or is flush with the top surface of the liquid cooling assembly.

[0016] When using the battery case of the present application, since the case body has a receiving cavity, the battery pack can be accommodated through the receiving cavity, and the battery pack can be temperature-controlled by the liquid cooling assembly arranged on the bottom surface of the case body, thereby ensuring the performance of the battery system. Secondly, the battery case of the present application also has a plurality of support blocks arranged on the bottom surface of the case body, and the support blocks protrude from the top surface of the liquid cooling assembly or are flush with the top surface of the liquid cooling assembly. Therefore, the support blocks of the present application can not only support the battery pack, but also protect the liquid cooling assembly to prevent the liquid cooling assembly from being excessively squeezed by the battery pack, thereby effectively ensuring the performance of the battery case. Moreover, since the liquid cooling assembly and the case body of the present application are detachably connected, when the battery case needs to be maintained, the case body and the liquid cooling assembly can be disassembled to avoid replacing the entire case body, thereby effectively reducing maintenance costs. Therefore, the battery case of the present application effectively solves the problem of high maintenance costs in the prior art due to the liquid cooling plate and the battery case being an integrated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 An exploded view of a battery system according to a specific embodiment of the present invention is shown;

[0019] Figure 2 Shown Figure 1 Schematic diagram of the internal structure of the battery system.

[0020] The above drawings include the following reference numerals:

[0021] 10. Box body; 11. Accommodating cavity; 12. Installation opening; 13. Upper cover; 20. Support block; 30. Liquid cooling assembly; 31. Harmonica tube assembly; 32. Liquid collecting pipe; 40. First avoidance opening; 41. Avoidance gap; 42. Second avoidance opening; 50. Thermal conductive adhesive layer; 60. Support foam; 70. Battery pack; 71. Battery cell. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0025] In order to solve the problem of high maintenance cost caused by the integrated structure of the liquid cooling plate and the battery box in the prior art, the present application provides a battery box and a battery system.

[0026] And, as Figure 1 and Figure 2 As shown, the battery system in this application has the following battery box.

[0027] like Figure 1 and Figure 2As shown, the battery case in the present application includes a case body 10, a support block 20 and a liquid cooling assembly 30. The case body 10 has a accommodating cavity 11, and the top of the case body 10 has a mounting opening 12 connected to the accommodating cavity 11; and the shell body may also include an upper cover 13 covering the mounting opening 12; there are multiple support blocks 20, and the multiple support blocks 20 are located in the accommodating cavity 11 and are spaced apart on the bottom surface of the case body 10; the liquid cooling assembly 30 is detachably arranged on the bottom surface of the case body 10, and the liquid cooling assembly 30 is provided with at least one first avoidance opening 40 corresponding to the multiple support blocks 20, and each first avoidance opening 40 is provided with at least one support block 20, and the support block 20 protrudes from the top surface of the liquid cooling assembly 30 or is flush with the top surface of the liquid cooling assembly 30.

[0028] When using the battery case of the present application, since the case body 10 has a receiving cavity 11, the battery pack 70 can be accommodated through the receiving cavity 11, and the battery pack 70 can be temperature-controlled by the liquid cooling assembly 30 arranged on the bottom surface of the case body 10, thereby ensuring the performance of the battery system. Secondly, the battery case of the present application also has a plurality of support blocks 20 arranged on the bottom surface of the battery body, and the support blocks 20 protrude from the top surface of the liquid cooling assembly 30 or are flush with the top surface of the liquid cooling assembly 30. Therefore, the support blocks 20 of the present application can not only support the battery pack 70, but also protect the liquid cooling assembly 30 to prevent the liquid cooling assembly 30 from being excessively squeezed by the battery pack 70, thereby effectively ensuring the performance of the battery case. In addition, since the liquid cooling assembly 30 and the case body 10 in the present application are detachably connected, when the battery case needs to be maintained, the case body 10 and the liquid cooling assembly 30 can be disassembled to avoid replacing the entire case body 10, thereby effectively reducing maintenance costs. Therefore, the battery box in the present application effectively solves the problem of high maintenance cost caused by the liquid cooling plate and the battery box being an integrated structure in the prior art.

[0029] Furthermore, it should be noted that, with regard to the selection of the material for the support block 20 in this application, the hardness of the selected material may be greater than the hardness of the liquid cooling assembly 30 , thereby further ensuring the protective effect of the support block 20 on the liquid cooling assembly 30 .

[0030] Preferably, the support block 20 protrudes from the top surface of the liquid cooling assembly 30 .

[0031] In the present application, for the battery system, the battery system also includes one or more battery packs 70, and the length direction of the support block 20 of the battery case is the same as the thickness direction of the battery cells 71 of the battery pack 70. In the present application, the battery pack 70 can be formed by combining multiple battery cells 71, and the multiple battery cells 71 can be divided into one row or multiple rows, and the multiple battery cells 71 in each row are arranged along the thickness direction. Therefore, in the present application, the length direction of the support block 20 is the same as the arrangement direction of the multiple battery cells 71 in each row. Among them, "multiple" in the embodiments of the present application means two or more than two, for example, multiple groups are two or more than two groups, and multiple rows are two or more than two rows. Of course, in the present application, the setting method of the support block 20 can be adaptively adjusted according to the actual usage.

[0032] In a specific embodiment of the present application, Figure 1 As shown, the liquid cooling assembly 30 includes a harmonica tube group 31 and a liquid collecting pipe 32. There are at least two harmonica tube groups 31 and at least two liquid collecting pipes 32. Each end of the harmonica tube group 31 is connected to a different liquid collecting pipe 32, and any two adjacent harmonica tube groups 31 and the liquid collecting pipe 32 form a first avoidance opening 40. In other words, in this embodiment, the battery pack 70 is primarily temperature-controlled by the harmonica tube group 31, thereby ensuring that the battery pack 70 maintains a normal operating temperature. Preferably, there are two liquid collecting pipes 32 in this embodiment, and the same liquid collecting pipe 32 is connected to the same end of the length direction of all harmonica tube groups 31. Therefore, in this embodiment, the two liquid collecting pipes 32 are arranged parallel to each other, and the length direction of the liquid collecting pipe 32 is perpendicular to the length direction of the harmonica tube group 31. In other words, all harmonica tube groups 31 are arranged between the two liquid collecting pipes 32. Exemplarily, the cooling liquid enters the harmonica pipe group 31 from one of the manifolds 32 and then flows out through the other manifold 32 .

[0033] Alternatively, as Figure 1 As shown, the extension direction of the harmonica pipe assembly 31 is parallel to the extension direction of the support block 20. This arrangement not only ensures that the support block 20 effectively supports the battery pack 70, but also effectively ensures a more compact internal structure of the box body 10, thereby achieving a miniaturized battery box design. Furthermore, this arrangement effectively prevents collisions between the support block 20 and the harmonica pipe assembly 31.

[0034] Alternatively, as Figure 2 As shown, clearances 41 exist between the longitudinal ends of the support block 20 and the circumferential inner wall of the battery case 10 to accommodate the liquid collector 32. In other words, in this application, the liquid cooling assembly 30 is primarily laid flat on the bottom surface of the battery case 10. This arrangement provides ample space for the liquid collector 32, ensuring a more compact internal structure for the battery case.

[0035] Preferably, if Figure 1 As shown, there are multiple harmonica pipe groups 31, and the multiple harmonica pipe groups 31 are arranged at equal intervals. This arrangement ensures that all first avoidance openings 40 are of the same size, thereby ensuring that each first avoidance opening 40 corresponds to the same number of support blocks 20, thereby ensuring a more stable force on the battery pack 70. Further preferably, each first avoidance opening 40 is provided with a corresponding support block 20. Of course, the number of support blocks 20 corresponding to each first avoidance opening 40 can be adaptively adjusted according to actual usage.

[0036] Alternatively, as Figure 1 As shown, the harmonica tube groups 31 at the ends of the arrangement, the liquid collecting pipe 32, and the circumferential inner wall of the box body 10 define a second escape opening 42. At least one support block 20 is disposed within each second escape opening 42. This arrangement ensures that the support blocks 20 corresponding to the second escape opening 42 can support the edges of the battery pack 70, thereby effectively preventing the battery pack 70 from tilting, thereby ensuring the stability and performance of the battery system.

[0037] Optionally, the liquid collecting tube 32 is positioned closer to the mounting opening 12 than the harmonica pipe assembly 31. That is, in terms of height, the top surface of the liquid collecting tube 32 is located above the top surface of the harmonica pipe assembly 31. This arrangement allows the liquid collecting tube 32 to provide a certain degree of positioning control for the edge of the battery pack 70, thereby improving the installation stability of the battery pack 70. Furthermore, the battery pack 70 can be positioned within the space enclosed by the portion of the liquid collecting tube 32 that is higher than the harmonica pipe assembly 31.

[0038] Alternatively, as Figure 2 As shown, the battery case further includes a thermally conductive adhesive layer 50, which is disposed on the top surface of the liquid cooling assembly 30. This arrangement effectively reduces the thermal resistance between the battery pack 70 and the liquid cooling assembly 30, thereby improving the heat exchange effect between the battery pack 70 and the liquid cooling assembly 30.

[0039] Alternatively, as Figure 2 As shown, the battery case further includes support foam 60, which is provided on at least the portion of the bottom surface of the case body 10 corresponding to the liquid cooling assembly 30. The support foam 60 provides a certain degree of support and shock absorption for the liquid cooling assembly 30, thereby preventing relative shaking between the liquid cooling assembly 30 and the case body 10 and ensuring the stability of the liquid cooling assembly 30.

[0040] In the present application, regarding the battery pack 70 and liquid cooling assembly 30 in the battery system, the battery pack 70 is located above the harmonica tube assembly 31 of the liquid cooling assembly 30. Since there are multiple harmonica tube assemblies 31, when there are multiple battery packs 70, each battery pack 70 can be provided with a corresponding harmonica tube assembly 31 on its bottom surface. The support blocks 20 between adjacent harmonica tube assemblies 31 provide support and protection for the battery packs 70. The thermally conductive adhesive layer 50 is disposed between the harmonica tube assembly 31 and the battery pack 70. Furthermore, since the harmonica tube assembly 31 and the support blocks 20 are arranged parallel to each other, the length of the harmonica tube assembly 31 is the same as the thickness of the battery cells 71 of the battery pack 70, or in other words, the arrangement direction of the battery cells 71.

[0041] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0042] 1. Effectively solves the problem of high maintenance cost caused by the integrated structure of the liquid cooling plate and the battery box in the existing technology;

[0043] 2. Simple structure and stable performance.

[0044] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery box, characterized in that: include: A box body (10), the box body (10) having a receiving cavity (11), and a top of the box body (10) having a mounting opening (12) communicating with the receiving cavity (11); A supporting block (20), wherein the supporting blocks (20) are multiple, and the multiple supporting blocks (20) are located in the accommodating cavity (11) and are spaced apart on the bottom surface of the box body (10); A liquid cooling assembly (30), wherein the liquid cooling assembly (30) is detachably arranged on the bottom surface of the box body (10), and the liquid cooling assembly (30) is provided with at least one first avoidance opening (40) corresponding to the plurality of support blocks (20), and at least one support block (20) is provided in each of the first avoidance openings (40), and the support block (20) protrudes from the top surface of the liquid cooling assembly (30) or is flush with the top surface of the liquid cooling assembly (30).

2. The battery box according to claim 1, characterized in that: The liquid cooling assembly (30) comprises: A harmonica pipe group (31), wherein the harmonica pipe group (31) is at least two; There are at least two liquid collecting pipes (32), and the two ends of the harmonica pipe group (31) are respectively connected to different liquid collecting pipes (32), and any two adjacent harmonica pipe groups (31) and the liquid collecting pipes (32) enclose the first avoidance opening (40).

3. The battery box according to claim 2, characterized in that: The harmonica pipe group (31) and the supporting block (20) are parallel to each other.

4. The battery box according to claim 2, characterized in that: There is an avoidance gap (41) between the two ends of the support block (20) in the length direction and the circumferential inner side wall of the box body (10) for avoiding the liquid collecting pipe (32).

5. The battery box according to claim 2, characterized in that: The harmonica pipe group (31) is multiple, The plurality of harmonica pipe groups (31) are arranged at equal intervals; and / or The harmonica tube groups (31) located at both ends of the arrangement direction among the plurality of harmonica tube groups (31), the liquid collecting pipe (32) and the circumferential inner side wall of the box body (10) form a second avoidance opening (42), and at least one support block (20) is provided in each of the second avoidance openings (42).

6. The battery box according to claim 2, characterized in that: The liquid collecting pipe (32) is close to the installation opening (12) relative to the harmonica pipe group (31).

7. The battery case according to any one of claims 1 to 6, characterized in that: The battery box further comprises a heat-conducting adhesive layer (50), and the heat-conducting adhesive layer (50) is arranged on the top surface of the liquid cooling component (30).

8. The battery case according to any one of claims 1 to 6, characterized in that: The battery box further comprises a supporting foam (60), and the supporting foam (60) is provided on at least a portion of the bottom surface of the box body (10) corresponding to the liquid cooling assembly (30).

9. A battery system, characterized in that: A battery case comprising the battery case according to any one of claims 1 to 8.

10. The battery system according to claim 9, characterized in that The battery system further comprises a battery pack (70), and the length direction of the support block (20) of the battery box is the same as the thickness direction of the battery cell (71) of the battery pack (70).

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