Lithium battery fixing structural member and lithium battery

Abstract

The utility model provides a lithium battery fixing structural member and a lithium battery, and relates to the technical field of batteries. The lithium battery fixing structural member is characterized in that the lithium battery fixing structural member is a cube without a bottom surface; the upper surface of the cube is provided with a plurality of threaded holes, screws matched with the threaded holes and a plurality of supporting ribs arranged upwards. Each surface of the cube is provided with a plurality of holes with preset shapes and a bulge structure; the protruding structure is used for being arranged in a plastic shell of the lead-acid battery to play a fixing role. According to the utility model, the lithium battery fixing structural member matched with the plastic shell of the lead-acid battery is arranged, and the lithium ion battery cell and the battery management system are fixed through the lithium battery fixing structural member, so that the problems of overlarge weight and poor heat dissipation of the battery caused by fixing in a glue pouring manner in the prior art are avoided; the heat dissipation efficiency of the lithium battery is improved, and the weight of the lithium battery is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a fixing structure part for a lithium battery and a lithium battery. Background Art

[0002] Lithium-ion battery cells gradually replace lead-acid batteries due to their advantages such as high energy density, long life cycle, and environmental protection. However, at present, many battery compartments are still designed according to the plastic shells of the original lead-acid batteries. Therefore, when replacing, it is necessary to keep the plastic shells of the lithium-ion battery cells and lead-acid batteries consistent.

[0003] In the existing structure, in order to fix the lithium-ion battery cell and the Battery Management System (BMS) in the plastic shell of the lead-acid battery, a form of applying glue or pouring glue is usually adopted. When the glue application method is used, the glue will age and fall off after being used for a period of time, resulting in the inability to fix the lithium-ion battery cell and BMS; although the form of pouring glue can fix the lithium-ion battery cell and BMS for a long time, it will cause an increase in the overall weight and manufacturing cost of the battery, and at the same time, the heat dissipation performance of the battery is relatively poor. Summary of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a fixing structure part for a lithium battery and a lithium battery.

[0005] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0006] In the first aspect, the utility model provides a fixing structure part for a lithium battery. The fixing structure part for a lithium battery is a cube without a bottom surface;

[0007] The upper surface of the cube is provided with a plurality of threaded holes, screws matching the plurality of threaded holes, and a plurality of upwardly arranged support ribs;

[0008] Each surface of the cube is provided with a plurality of holes and protruding structures with a preset shape; the protruding structures are used for being arranged in the plastic shell of the lead-acid battery to play a fixing role.

[0009] Optionally, the length and width of the cube are correspondingly smaller than the length and width of the plastic shell; the length and width of the cube are correspondingly larger than the length and width of the lithium-ion battery cell.

[0010] Optionally, the plurality of support ribs are symmetrically arranged on the upper surface of the cube, and the positions where the plurality of support ribs are located are on the two side edges of the upper surface of the cube.

[0011] Optionally, the height of the plurality of support ribs is greater than the height of the battery management system.

[0012] Optionally, the cube and the plurality of support ribs are made of metal, and the plurality of support ribs are welded to the upper surface of the cube.

[0013] Optionally, a preset number of cable tie holes are provided on the protruding structure on the upper surface of the cube.

[0014] Optionally, a metal sheet parallel to the upper surface of the cube is welded to one end of the support rib away from the upper surface of the cube.

[0015] Optionally, the height of the lithium battery fixing structure is less than the height of the plastic housing.

[0016] In a second aspect, an embodiment of the present invention provides a lithium battery, including: a lithium ion battery cell, a plastic housing, a plastic upper cover, a battery management system, and the lithium battery fixing structure according to the first aspect above;

[0017] The lithium ion battery cell is disposed inside the lithium battery fixing structure, and the battery management system is fixed to the upper surface of the lithium battery fixing structure through a plurality of threaded holes and screws matching the plurality of threaded holes;

[0018] The lithium battery fixing structure is disposed inside the plastic housing, and the protruding structure on the lithium battery fixing structure contacts the inside of the plastic housing;

[0019] The plastic housing and the plastic upper cover are fixedly connected.

[0020] Optionally, the plastic housing and the plastic upper cover are adhered by glue.

[0021] The present invention provides a lithium battery fixing structure and a lithium battery. Among them, a lithium battery fixing structure includes: the lithium battery fixing structure is a cube without a bottom surface; a plurality of threaded holes, screws matching the plurality of threaded holes, and a plurality of upward support ribs are provided on the upper surface of the cube; a plurality of holes and protruding structures with preset shapes are provided on each surface of the cube; the protruding structure is used for fixing in the plastic housing of the lead-acid battery. In the present invention, by providing a lithium battery fixing structure matching the plastic housing of the lead-acid battery and fixing the lithium ion battery cell and the battery management system through the lithium battery fixing structure, the problems of excessive battery weight and poor heat dissipation caused by the existing glue filling method are avoided, the heat dissipation efficiency of the lithium battery is improved, and the weight of the lithium battery is reduced.

[0022] The following will further describe the present invention in detail with reference to the drawings and embodiments. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structure diagram of a lithium battery fixing structure provided by an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the structure of a lithium battery provided by an embodiment of the present utility model. Detailed implementation manners

[0025] The present utility model will be further described in detail below in conjunction with specific embodiments, but the implementation manners of the present utility model are not limited thereto.

[0026] In order to reduce the weight and manufacturing cost of the lithium battery and at the same time increase the heat dissipation performance of the lithium battery, an embodiment of the present utility model provides a lithium battery fixing structure member. Figure 1 Three-dimensional structure diagram of a lithium battery fixing structure member provided by an embodiment of the present utility model. As Figure 1 shown, the lithium battery fixing structure member is a cube without a bottom surface;

[0027] A plurality of threaded holes, screws 1 matching the plurality of threaded holes, and a plurality of support ribs 2 arranged upward are provided on the upper surface of the cube;

[0028] A plurality of holes 3 with a preset shape and a convex structure 4 are provided on each surface of the cube; the convex structure 4 is used for being arranged in the plastic shell of the lead-acid battery to play a fixing role.

[0029] It should be noted that in the embodiment of the present utility model, Figure 1 the shape and position of the support rib 2 are only illustrative. For example, the support rib 2 can also be in the shape of a hollow cube, and the position of the support rib 2 can also be symmetrically arranged on the front edge of the upper surface of the cube, as long as it can achieve the purpose of fixing in the plastic shell of the lead-acid battery and allowing the battery management system to be embedded. The present utility model embodiment does not limit the specific position setting.

[0030] In addition, Figure 1 the number of the convex structures 4 in

[0031] is only exemplary. For example, it can also be one, that is, a convex structure 4 is provided in the middle of each surface, as long as it can achieve the purpose of keeping the lithium battery fixing structure member stable on the side in the plastic shell of the lead-acid battery without shaking.

[0032] An embodiment of the present utility model provides a lithium battery fixing structure member and a lithium battery. Among them, a lithium battery fixing structure member includes: the lithium battery fixing structure member is a cube without a bottom surface; a plurality of threaded holes, screws matching the plurality of threaded holes, and a plurality of upwardly provided support ribs are provided on the upper surface of the cube; a plurality of holes and protruding structures with a preset shape are provided on each surface of the cube; the protruding structure is used to be arranged in the plastic shell of the lead-acid battery to play a fixing role. In the embodiment of the present utility model, by providing a lithium battery fixing structure member matching the plastic shell of the lead-acid battery, and fixing the lithium-ion battery cell and the battery management system through the lithium battery fixing structure member, the problems of excessive battery weight and poor heat dissipation caused by the existing fixing method of pouring glue are avoided, the heat dissipation efficiency of the lithium battery is improved, and the weight of the lithium battery is reduced.

[0033] Optionally, the length and width of the cube are correspondingly smaller than the length and width of the plastic shell; the length and width of the cube are correspondingly larger than the length and width of the lithium-ion battery cell.

[0034] It should be noted that, in this embodiment, it is preferred that the length and width of the cube are set so that it just fits the lithium-ion battery cell inside and closely fits the plastic shell outside.

[0035] Preferably, the plurality of support ribs 2 are symmetrically arranged on the upper surface of the cube, and the positions where the plurality of support ribs 2 are located are on the two side edges of the upper surface of the cube.

[0036] Optionally, the height of the plurality of support ribs 2 is greater than the height of the battery management system.

[0037] It should be noted that, in the embodiment of the present utility model, setting the height of the support ribs 2 to be greater than the height of the battery management system is mainly to enable the battery management system to dissipate heat well in the plastic shell.

[0038] Optionally, the cube and the plurality of support ribs 2 are made of metal, and the plurality of support ribs 2 are welded to the upper surface of the cube.

[0039] Optionally, a preset number of cable tie holes 5 are provided on the protruding structure 4 on the upper surface of the cube.

[0040] It should be noted that, in the embodiment of the present utility model, the cable tie holes 5 are mainly used to fix the wire harness.

[0041] Optionally, a metal sheet parallel to the upper surface of the cube is welded to the end of the support rib 2 away from the upper surface of the cube.

[0042] Optionally, the height of the lithium battery fixing structure member is less than the height of the plastic shell.

[0043] It should be noted that the height of the lithium battery fixing structure is set to be less than the height of the plastic shell mainly to enable the lithium battery fixing structure to be completely wrapped inside the plastic shell.

[0044] Corresponding to a lithium battery fixing structure, an embodiment of the present invention provides a lithium battery. Figure 2 The following is a schematic structural diagram of a lithium battery provided by an embodiment of the present invention. As Figure 2 shown, it includes: a lithium-ion battery cell 11, a plastic shell 10, a plastic upper cover 13, a battery management system 14, and the lithium battery fixing structure 12 of the above embodiment;

[0045] The lithium-ion battery cell 11 is arranged inside the lithium battery fixing structure 12, and the battery management system 14 is fixed on the upper surface of the lithium battery fixing structure 12 through a plurality of threaded holes and screws 1 that match the plurality of threaded holes;

[0046] The lithium battery fixing structure 12 is arranged inside the plastic shell 10, and the protruding structure 4 on the lithium battery fixing structure 12 is in contact with the inside of the plastic shell 10;

[0047] The plastic shell 10 and the plastic upper cover 13 are fixedly connected.

[0048] Optionally, the plastic shell 10 and the plastic upper cover 13 are adhesively bonded with glue.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0050] Although the present application is described herein in connection with various embodiments, however, in the process of implementing the claimed present application, those skilled in the art can understand and achieve other variations of the disclosed embodiments by viewing the accompanying drawings and the disclosed content. In the description of the present invention, the term "including" does not exclude other components or steps, the term "one" or "a" does not exclude a plurality of cases, and the meaning of "a plurality" is two or more unless otherwise specifically defined. In addition, certain measures are described in different embodiments, but this does not mean that these measures cannot be combined to produce good results.

[0051] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A lithium battery fixing structure, characterized in that: The lithium battery fixing structure is a cube without a bottom surface; The upper surface of the cube is provided with a plurality of threaded holes, screws matching the plurality of threaded holes, and a plurality of supporting ribs arranged upwards; Each surface of the cube is provided with a plurality of holes of preset shapes and a protruding structure; the protruding structure is used to be arranged in the plastic shell of the lead-acid battery to play a fixing role.

2. The lithium battery fixing structure according to claim 1, characterized in that: The length and width of the cube are correspondingly smaller than the length and width of the plastic shell; the length and width of the cube are correspondingly larger than the length and width of the lithium-ion battery cell.

3. The lithium battery fixing structure according to claim 1, characterized in that: The plurality of support ribs are symmetrically arranged on the upper surface of the cube, and the plurality of support ribs are located on both side edges of the upper surface of the cube.

4. The lithium battery fixing structure according to claim 1, characterized in that: The height of the plurality of support ribs is greater than the height of the battery management system.

5. The lithium battery fixing structure according to claim 1, characterized in that: The cube and the plurality of supporting ribs are made of metal, and the plurality of supporting ribs are welded to the upper surface of the cube.

6. The lithium battery fixing structure according to claim 1, characterized in that: A preset number of tie holes are arranged on the protruding structure on the upper surface of the cube.

7. The lithium battery fixing structure according to claim 1, characterized in that: A metal sheet parallel to the upper surface of the cube is welded to one end of the support rib away from the upper surface of the cube.

8. The lithium battery fixing structure according to claim 1, characterized in that: The height of the lithium battery fixing structure is smaller than the height of the plastic shell.

9. A lithium battery, characterized in that: include: A lithium-ion battery cell, a plastic shell, a plastic upper cover, a battery management system, and a lithium battery fixing structure as claimed in any one of claims 1 to 8; The lithium-ion battery cell is arranged inside the lithium battery fixing structure, and the battery management system is fixed to the upper surface of the lithium battery fixing structure through a plurality of threaded holes and screws matching the plurality of threaded holes; The lithium battery fixing structure is arranged inside the plastic shell, and the protrusion structure on the lithium battery fixing structure is in contact with the inside of the plastic shell; The plastic shell and the plastic upper cover are fixedly connected.

10. The lithium battery according to claim 9, characterized in that: The plastic shell and the plastic upper cover are bonded together by glue.

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