Battery pack and power device
By setting pole columns on both sides of the thickness direction of the battery cell and arranging the battery cell along the thickness direction, the problem of high production cost of the battery pack is solved, and few parts, low production cost and overall performance improvement is achieved.
Patent Information
- Application Number
- CN202421977222.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The production cost of existing battery packs is high, resulting in corresponding increase in the production cost of the whole vehicle.
By setting pole columns on both sides of the thickness direction of the battery cell and arranging the battery cell in the thickness direction in the shell, the number of parts and production process flow are reduced, and material and labor costs are reduced.
It achieves fewer parts and low production costs of battery packs, reduces weight and space volume, and improves overall performance and safety performance.
Smart Images
Figure CN223006954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery manufacturing, in particular to a battery pack and a power device. Background Art
[0002] It is pointed out in the related art that the development of new energy vehicles is changing with each passing day. Since the cost of the battery pack accounts for 40%-60% of the total vehicle cost, the cost of the battery pack lies in the cost of the components themselves and the labor cost. The high production cost of the battery pack leads to a high production cost of the whole vehicle or a relatively low vehicle configuration. Content of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model provides a battery pack with fewer components and lower production cost.
[0004] The utility model also provides a power device with the above battery pack.
[0005] The battery pack according to the first aspect of the utility model includes: a housing, in which a receiving cavity is formed; a battery module, which is arranged in the receiving cavity. The battery module includes a plurality of battery cells, and the plurality of battery cells are arranged along the thickness direction. The positive electrode post and the negative electrode post of each battery cell are respectively arranged on both sides of the battery cell in the thickness direction.
[0006] According to the battery pack of the utility model, by arranging the electrode posts on both sides of the battery cell in the thickness direction and arranging the battery cells along the thickness direction in the housing, there is no need to set up a bus bar, which reduces the number of components in the battery pack, reduces the weight of the battery pack, and there is no need for other assembly production processes, reducing the production process flow. Therefore, the material cost and labor cost of the battery pack are reduced, and the space volume of the battery pack is reduced.
[0007] In some embodiments, the battery pack further includes: a support member, which is arranged on each battery cell. The support member is respectively arranged opposite to the positive electrode post and the negative electrode post of the battery cell in the thickness direction, and the support member is spaced apart from the electrode post on the same side.
[0008] In some embodiments, the battery pack further includes: a buffer assembly, which is arranged between every two adjacent battery cells.
[0009] In some embodiments, the buffer assembly is arranged on the two side surfaces of the battery cell in the thickness direction. The buffer assembly includes: a first buffer member and a second buffer member. The first buffer member extends circumferentially around one side surface of the battery cell where it is located, and the second buffer member is arranged on the circumferential inner side of the first buffer member.
[0010] In some embodiments, the first buffer member is a foam, and / or the second buffer member is an aerogel.
[0011] In some embodiments, the thickness dimension of the support member is the same as that of one of the positive electrode post and the negative electrode post, and the thickness dimensions of the positive electrode post and the negative electrode post are the same.
[0012] In some embodiments, the thickness of the positive electrode post is 1 mm - 2 mm, and / or the thickness of the negative electrode post is 1 mm - 2 mm, and / or the thickness of the support member is 1 mm - 2 mm.
[0013] In some embodiments, the support member is formed as a plastic part.
[0014] In some embodiments, the battery pack further includes: a cover plate, and the cover plate covers the open mouth of the accommodation cavity.
[0015] The power device according to the second aspect of the present invention includes the battery pack according to the first aspect of the present invention above.
[0016] By providing the battery pack of the first aspect above, the overall performance of the power device is improved, the safety performance of the power device is enhanced, and the cost of the power device is reduced.
[0017] The additional aspects and advantages of the present invention will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the present invention;
[0019] Figure 2 is Figure 1 a schematic diagram of the battery cell shown in ;
[0020] Figure 3 is Figure 2 a schematic diagram of the battery cell shown in from another angle;
[0021] Figure 4 is Figure 2 a schematic diagram of the battery cell shown in from yet another angle;
[0022] Figure 5 is Figure 4 a schematic diagram of the battery cell shown in, wherein the buffer assembly is provided on the battery cell.
[0023] Reference Signs:
[0024] 100. Battery pack; 1. Housing; 2. Battery cell; 21. Positive terminal; 22. Negative terminal; 3. Support member; 4. Buffer assembly; 41. First buffer member; 42. Second buffer member. Detailed implementation manners
[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0026] The following refers to Figures 1 - 5 Describe the battery pack 100 according to the embodiment of the first aspect of the present invention.
[0027] As Figures 1 - 5 shown, the battery pack 100 according to the embodiment of the first aspect of the present invention includes: a housing 1 and a battery module.
[0028] Specifically, an accommodation cavity is formed in the housing 1, the battery module is disposed in the accommodation cavity, the battery module includes a plurality of battery cells 2, the plurality of battery cells 2 are arranged in the thickness direction, and the positive terminal 21 and the negative terminal 22 of each battery cell 2 are respectively disposed on both sides of the battery cell 2 in the thickness direction. Thus, the structure of the battery pack 100 is simple and ingeniously designed.
[0029] According to the battery pack 100 of the embodiment of the present invention, by disposing the terminals on both sides of the battery cell 2 in the thickness direction and arranging the battery cells 2 in the housing 1 in the thickness direction, there is no need to provide a bus bar, which reduces the number of components in the battery pack 100, reduces the weight of the battery pack 100, and there is no need for other assembly production processes, reducing the production process flow, thereby reducing the material cost and labor cost of the battery pack 100 and reducing the space volume of the battery pack 100.
[0030] In some embodiments of the present invention, as Figure 2 shown, the battery pack 100 further includes: a support member 3, the support member 3 is disposed on each battery cell 2, the support member 3 is relatively disposed with the positive terminal 21 and the negative terminal 22 in the thickness direction of the battery cell 2, and the support member 3 is spaced apart from the terminal on the same side. That is to say, the support member 3 cooperates with the terminal to ensure the structural stability inside the battery pack 100 and prevent contact or impact between the battery cells 2.
[0031] In some embodiments of the present invention, as Figure 5As shown, the battery pack 100 further includes: a buffer assembly 4, which is disposed between every two adjacent battery cells 2. Thus, the buffer assembly 4 can meet the requirements of the core's cyclic expansion, and the buffer assembly 4 absorbs vibrations and impact forces, reducing the physical contact between the battery cells 2, thereby reducing the risk of damage caused by collision or vibration.
[0032] Further, the buffer assembly 4 is disposed on both side surfaces in the thickness direction of the battery cell 2. The buffer assembly 4 includes: a first buffer member 41 and a second buffer member 42. The first buffer member 41 extends circumferentially around one side surface of the battery cell 2 where it is located, and the second buffer member 42 is disposed inside the circumference of the first buffer member 41. Thus, the structure of the buffer assembly 4 is simple and ingeniously designed, and can meet the requirements of the core's cyclic expansion.
[0033] Preferably, the first buffer member 41 is a foam, and the second buffer member 42 is an aerogel.
[0034] In some embodiments of the present invention, the thickness dimension of the support member 3 is the same as that of one of the positive electrode post 21 and the negative electrode post 22, and the thickness dimensions of the positive electrode post 21 and the negative electrode post 22 are the same. Thus, the overall structural stability of the battery pack 100 is improved. Since the support member 3 is dimensionally matched with the electrode post, it can ensure that the battery cell 2 is more firmly fixed in the battery pack 100, thereby reducing displacement caused by vibration or impact during transportation or use.
[0035] In some embodiments of the present invention, the thickness of the positive electrode post 21 is 1 mm - 2 mm, and / or the thickness of the negative electrode post 22 is 1 mm - 2 mm, and / or the thickness of the support member 3 is 1 mm - 2 mm. For example, the thickness of the positive electrode post 21 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc.; the thickness of the negative electrode post 22 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc.; the thickness of the support member 3 can be 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc.
[0036] Preferably, the support member 3 is formed as a plastic part, and the plastic material has high hardness and good insulation.
[0037] In some embodiments of the present invention, the battery pack 100 further includes: a cover plate, which covers the open mouth of the accommodation cavity. Thus, it can effectively prevent dust, water, and shock, and is convenient for assembly and maintenance.
[0038] The power device according to the second aspect embodiment of the present utility model includes the battery pack 100 according to the above first aspect embodiment of the present utility model.
[0039] By providing the battery pack 100 of the above first aspect embodiment, the overall performance of the power device is improved, the safety performance of the power device is enhanced, and the cost of the power device is reduced according to the power device of the embodiment of the present utility model.
[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.
[0042] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0043] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0044] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A battery pack, characterized in that: include: A housing having a receiving cavity formed therein; A battery module is arranged in the accommodating cavity, and the battery module includes a plurality of battery cells, and the plurality of battery cells are arranged along the thickness direction, and the positive electrode column and the negative electrode column of each battery cell are respectively arranged on both sides of the battery cell in the thickness direction.
2. The battery pack according to claim 1, characterized in that: Also includes: A support member is provided on each of the battery cells, the support member is respectively arranged opposite to the positive electrode column and the negative electrode column in the thickness direction of the battery cell, and the support member is spaced apart from the electrode columns on the same side.
3. The battery pack according to claim 2, characterized in that: Also includes: A buffer assembly is provided between every two adjacent battery cells.
4. The battery pack according to claim 3, characterized in that: The buffer assembly is arranged on both side surfaces of the battery cell in the thickness direction, and includes: a first buffer member and a second buffer member, the first buffer member extends circumferentially around one side surface of the battery cell where it is located, and the second buffer member is arranged on the circumferential inner side of the first buffer member.
5. The battery pack according to claim 4, characterized in that: The first buffer component is foam, and / or the second buffer component is aerogel.
6. The battery pack according to any one of claims 2 to 5, characterized in that: The thickness of the support member is the same as the thickness of one of the positive electrode column and the negative electrode column, and the thickness of the positive electrode column is the same as the thickness of the negative electrode column.
7. The battery pack according to any one of claims 2 to 5, characterized in that: The thickness of the positive electrode column is 1 mm-2 mm, and / or the thickness of the negative electrode column is 1 mm-2 mm, and / or the thickness of the support member is 1 mm-2 mm.
8. The battery pack according to any one of claims 2 to 5, characterized in that: The support member is formed as a plastic member.
9. The battery pack according to any one of claims 1 to 5, characterized in that: Also includes: A cover plate is arranged to cover the open opening of the accommodating cavity.
10. A power device, characterized in that: A battery pack comprising any one of claims 1-9.