Shell of battery monomer, battery monomer with shell and battery pack

Abstract

The utility model discloses a shell of a battery monomer, the battery monomer with the shell and a battery pack, and the shell comprises a main shell, a shell cover and a shell cover, the inner side of the main shell defines a containing cavity; the mounting plate is connected with the main shell, a fixing part is arranged on the mounting plate, and the fixing part is used for being detachably connected with a box body of the battery pack. According to the shell disclosed by the utility model, the mounting plate is arranged, and the mounting plate is detachably connected with the box body of the battery pack through the fixing part, so that the single battery can be flexibly mounted and dismounted in the box body, the convenience of assembling, dismounting and maintaining the battery pack can be further improved, and the maintenance cost of the battery pack is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery monomer housing and a battery monomer and a battery pack having the same. Background Art

[0002] Traditional battery cell casings are standard rectangular or cylindrical. During assembly, whether it is a CTP structure battery pack or a traditional module structure battery pack, a large amount of adhesive is usually used to fix the battery cell or module. This makes repairs more difficult and costly when the battery fails in the future. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery cell housing, which can realize the flexible installation and removal of a single battery cell in the housing, thereby improving the convenience of assembly, disassembly and maintenance of the battery pack and reducing the maintenance cost of the battery pack.

[0004] The utility model also provides a battery monomer having the shell.

[0005] The utility model also provides a battery pack having the battery monomer.

[0006] The shell of the battery cell according to the first aspect of the utility model includes: a main shell, the inner side of which defines a accommodating cavity; a mounting plate, which is connected to the main shell and has a fixing portion provided on the mounting plate, which is used for detachable connection with the box body of the battery pack.

[0007] According to the shell of the battery cell of the utility model, by providing a mounting plate, and the mounting plate is detachably connected to the box body of the battery pack through a fixing part, it is possible to flexibly install and disassemble a single battery cell in the box body, thereby improving the convenience of assembly, disassembly and maintenance of the battery pack and reducing the maintenance cost of the battery pack.

[0008] According to some embodiments of the present invention, the fixing portion is formed as a fixing hole, and the mounting plate is configured to be connected to the box body by a fastener passing through the fixing hole.

[0009] According to some embodiments of the present invention, there are a plurality of mounting plates, and the plurality of mounting plates are arranged at intervals along the circumference of the main shell, and the fixing portion is formed on each of the mounting plates.

[0010] According to some embodiments of the utility model, the main shell includes: a bottom plate; a first side plate, wherein the number of the first side plates is two, the two first side plates extend along the length direction of the shell and are arranged at intervals in the width direction of the shell, and the lower ends of the two first side plates are connected to the bottom plate; a second side plate, wherein the number of the second side plates is two, the two second side plates extend along the width direction of the shell and are arranged at intervals in the length direction of the shell, and the lower ends of the two second side plates are connected to the bottom plate, and the mounting plate is connected to the bottom of the main shell and extends outward away from the main shell in a horizontal direction.

[0011] According to some embodiments of the present invention, there are two mounting plates, and the two mounting plates are arranged on both sides of the bottom plate in the length direction.

[0012] According to some embodiments of the present invention, the mounting plate, the bottom plate and the two first side plates are integrally formed.

[0013] According to some embodiments of the present invention, the mounting plate and the bottom plate are integrally formed, and the bottom plate is welded to the first side plate and the second side plate.

[0014] According to some embodiments of the present invention, the two mounting plates are respectively formed integrally with the adjacent second side plates, and the second side plates are welded to the first side plates and the bottom plate.

[0015] A battery cell according to a second aspect of the present invention comprises the housing of the battery cell according to the first aspect of the present invention.

[0016] According to the battery cell of the utility model, the overall performance of the battery cell is improved by providing the battery cell housing of the first aspect.

[0017] The battery pack according to the third aspect of the present invention comprises: a box body and a battery cell according to the second aspect of the present invention, wherein a cavity is formed in the box body, a plurality of the battery cells are stacked in the cavity, and a mounting plate of the battery cell is detachably connected to the box body.

[0018] According to the battery pack of the utility model, by providing the battery cells of the second aspect mentioned above and by utilizing the mounting plate to be detachably connected to the box body, the use of the bottom thermal conductive structural adhesive can be reduced, and at the same time, a single battery cell can be disassembled and replaced, thereby reducing the maintenance cost of the battery pack.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a partial schematic diagram of a battery pack according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of a battery cell shown in ;

[0022] Figure 3 is a schematic diagram of a housing according to an embodiment of the utility model;

[0023] Figure 4 is a schematic diagram of a housing according to another embodiment of the utility model;

[0024] Figure 5 is a schematic diagram of a housing according to another embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the box.

[0026] Reference numerals:

[0027] 1000, battery pack;

[0028] 100. Battery cell;

[0029] 10. Shell; 11. Main shell; 111. Bottom plate; 112. First side plate; 113. Second side plate; 12. Mounting plate; 121. Fixing hole;

[0030] 200, box body; 201, mounting hole. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference below Figure 2-Figure 5 The housing 10 of the battery cell 100 according to the first embodiment of the present invention is described.

[0033] like Figure 2 As shown, the shell 10 of the battery cell 100 according to the first aspect of the embodiment of the utility model includes: a main shell 11 and a mounting plate 12, the inner side of the main shell 11 defines a accommodating cavity; the mounting plate 12 is connected to the main shell 11, and a fixing part is provided on the mounting plate 12, and the fixing part is used to be detachably connected to the box body 200 of the battery pack 1000.

[0034] Specifically, the main shell 11 is mainly used to accommodate the electrode assembly, isolate the interior of the battery cell 100 from the outside, effectively prevent the interior of the battery cell 100 from communicating with the outside, and thus improve the reliability of the battery cell 100. The shape of the main shell 11 can be adjusted according to the type of the battery cell 100. For example, when the battery cell 100 is a square battery, the main shell 11 is square, and when the battery cell 100 is a cylindrical battery, the main shell 11 is cylindrical. In the embodiments of the present invention, the main shell 11 is square as an example for description.

[0035] The mounting plate 12 is connected to the side of the main shell 11 away from the accommodating cavity, and is used to fix the battery cell 100 on the box body 200. In this way, there is no need to use thermal conductive structural adhesive to fix the battery cell 100 and the box body 200, thereby reducing the use of thermal conductive structural adhesive. At the same time, the mounting plate 12 is detachably connected to the box body 200 through the fixing part. In this way, when a single battery cell 100 inside the battery pack 1000 has an unrepairable fault, only the damaged battery cell 100 can be replaced, thereby reducing the overall maintenance difficulty and maintenance cost of the battery pack 1000.

[0036] According to the shell 10 of the battery cell 100 of the embodiment of the utility model, by providing a mounting plate 12, and the mounting plate 12 is detachably connected to the box body 200 of the battery pack 1000 through a fixing part, it is possible to realize flexible installation and disassembly of a single battery cell 100 in the box body 200, thereby improving the convenience of assembly, disassembly and maintenance of the battery pack 1000 and reducing the maintenance cost of the battery pack 1000.

[0037] According to some embodiments of the present invention, Figure 2 As shown, the fixing portion is formed as a fixing hole 121, and the mounting plate 12 is configured to be connected to the box body 200 by a fastener passing through the fixing hole 121. Among them, the fastener has a simple structure and has a certain connection strength. Therefore, the mounting plate 12 is connected to the box body 200 by the fastener passing through the fixing hole 121, which can increase the connection stability and reliability between the battery cell 100 and the box body 200. In addition, there are many types of fasteners, for example, bolts, screws, etc.

[0038] According to some embodiments of the utility model, there are multiple mounting plates 12, and the multiple mounting plates 12 are arranged at intervals along the circumference of the main shell 11, and a fixing portion is formed on each mounting plate 12. For example, the number of mounting plates 12 can be two, three or more, and the multiple mounting plates 12 are arranged at intervals along the circumference of the main shell 11, which can increase the contact area between the battery cell 100 and the box body 200, and can also fix the battery cell 100 in multiple directions, thereby increasing the installation stability of the battery cell 100 and the box body 200.

[0039] According to some embodiments of the present invention, Figure 3-Figure 5 As shown, the main shell 11 includes: a bottom plate 111, a first side plate 112 and a second side plate 113, there are two first side plates 112, the two first side plates 112 extend along the length direction of the shell 10 and are arranged at intervals in the width direction of the shell 10, and the lower ends of the two first side plates 112 are connected to the bottom plate 111; there are two second side plates 113, the two second side plates 113 extend along the width direction of the shell 10 and are arranged at intervals in the length direction of the shell 10, and the lower ends of the two second side plates 113 are connected to the bottom plate 111, and the mounting plate 12 is connected to the bottom of the main shell 11 and extends outward away from the main shell 11 in the horizontal direction.

[0040] Specifically, the two first side panels 112 are the two large surfaces of the shell 10, the two second side edges are arranged adjacent to the two first side panels 112, and the first side panels 112 and the second side panels 113 are arranged in sequence around the periphery of the bottom plate 111 to define a receiving cavity together. The mounting plate 12 is connected to the bottom of the main shell 11, which is conducive to the fixed connection between the battery cell 100 and the bottom wall of the box body 200, so that the use of thermal conductive structural adhesive at the bottom of the battery pack box body 200 can be reduced; the mounting plate 12 extends outward away from the main shell 11 in the horizontal direction, which can increase the contact area between the battery cell 100 and the box body 200, and further increase the installation stability of the battery cell 100.

[0041] According to some embodiments of the present invention, Figure 2 As shown, there are two mounting plates 12, which are arranged on both sides of the length direction of the bottom plate 111. In this way, the installation stability of the battery cell 100 and the box body 200 can be increased, and the reliability of the battery pack 1000 can be improved. At the same time, it is also beneficial for the battery cells 100 to be stacked in the width direction to form a battery module, reduce the gap between two adjacent battery cells 100, and ensure the energy density of the battery module.

[0042] According to some embodiments of the present invention, Figure 3 As shown, the mounting plate 12, the bottom plate 111 and the two first side plates 112 are integrally formed. In this way, the assembly steps of the housing 10 can be reduced and the assembly rate of the battery cell 100 can be increased.

[0043] According to some embodiments of the present invention, Figure 4 As shown, the mounting plate 12 is integrally formed with the bottom plate 111, and the bottom plate 111 is welded to the first side plate 112 and the second side plate 113. In this way, the housing 10 can be sealed after the electrode assembly is put into the housing, thereby simplifying the assembly process of the battery cell 100 and improving the assembly rate of the battery cell 100. At the same time, the mounting plate 12 is integrally formed with the bottom plate 111, and the mounting plate 12 does not need to be welded to the bottom plate 111, so that the number of welding points can be reduced, thereby further improving the reliability of the housing 10 and reducing the risk of leakage of the battery cell 100.

[0044] According to some embodiments of the present invention, Figure 5 As shown, the two mounting plates 12 are respectively integrally formed with the adjacent second side plates 113, and the second side plates 113 are welded to the first side plates 112 and the bottom plate 111. Specifically, the mounting plate 12 and the second side plates 113 are integrally formed into an L shape, and the two second side plates 113 and the mounting plate 12 are respectively located on both sides of the length direction of the shell 10, and are welded to the first side plates 112 and the bottom plate 111, wherein the welding connection has a large structural strength and is easy to operate, and thus the use of the welding connection can increase the overall structural strength of the shell 10, and thus can improve the reliability of the battery cell 100, and at the same time, can also increase the connection strength between the mounting plate 12 and the shell 10, and thus can effectively avoid the mounting plate 12 being pulled when the battery pack 1000 is shaken, causing the mounting plate 12 and the shell 10 to break, thereby further improving the installation stability of the battery cell 100.

[0045] The battery cell 100 according to the second embodiment of the present invention includes the housing 10 of the battery cell 100 according to the first embodiment of the present invention.

[0046] According to the battery cell 100 of the embodiment of the present invention, the housing 10 of the battery cell 100 of the first embodiment is provided, thereby improving the overall performance of the battery cell 100 .

[0047] The battery pack 1000 according to the embodiment of the third aspect of the present invention comprises: a box body 200 and a battery cell 100 according to the embodiment of the second aspect of the present invention, a cavity is formed in the box body 200, a plurality of battery cells 100 are stacked in the cavity, and the mounting plate 12 of the battery cell 100 is detachably connected to the box body 200.

[0048] Furthermore, a mounting hole 201 is formed on the bottom wall of the box body, and the mounting hole 201 corresponds to the fixing hole 121 one by one.

[0049] Furthermore, the battery pack 1000 also includes a liquid cooling plate having mounting holes 201 formed thereon, and a plurality of battery cells 100 are directly fixed on the liquid cooling plate, so that the battery cells 100 can directly exchange heat with the liquid cooling plate, thereby improving the heat exchange effect of the liquid cooling plate.

[0050] According to the battery pack 1000 of the embodiment of the utility model, by setting the battery cell 100 of the above-mentioned second aspect embodiment and utilizing the mounting plate 12 to be detachably connected with the box body 200, the use of the bottom thermal conductive structural adhesive can be reduced, and the disassembly and replacement of a single battery cell 100 can be realized, thereby reducing the maintenance cost of the battery pack 1000.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cell housing, characterized in that: include: A main shell, the inner side of which defines a receiving cavity; A mounting plate is connected to the main shell, and a fixing portion is provided on the mounting plate, and the fixing portion is used for detachable connection with the box body of the battery pack.

2. The battery cell housing according to claim 1, characterized in that: The fixing portion is formed as a fixing hole, and the mounting plate is configured to be connected to the box body by a fastener passing through the fixing hole.

3. The battery cell housing according to claim 1, characterized in that: There are a plurality of mounting plates, which are arranged at intervals along the circumference of the main shell, and each mounting plate is formed with the fixing portion.

4. The battery cell housing according to claim 1, characterized in that: The main shell comprises: Base plate; A first side plate, wherein the number of the first side plates is two, the two first side plates extend along the length direction of the shell and are arranged at intervals in the width direction of the shell, and the lower ends of the two first side plates are connected to the bottom plate; a second side plate, wherein the number of the second side plates is two, the two second side plates extend along the width direction of the shell and are arranged at intervals in the length direction of the shell, and the lower ends of the two second side plates are connected to the bottom plate, The mounting plate is connected to the bottom of the main housing and extends outwardly away from the main housing in a horizontal direction.

5. The battery cell housing according to claim 4, characterized in that: There are two mounting plates, and the two mounting plates are arranged on both sides of the bottom plate in the length direction.

6. The battery cell housing according to claim 5, characterized in that: The mounting plate, the bottom plate and the two first side plates are integrally formed.

7. The battery cell housing according to claim 5, characterized in that: The mounting plate and the bottom plate are integrally formed, and the bottom plate is welded to the first side plate and the second side plate.

8. The battery cell housing according to claim 5, characterized in that: The two mounting plates are respectively formed integrally with the adjacent second side plates, and the second side plates are welded to the first side plates and the bottom plate.

9. A battery cell, characterized in that: A housing comprising a battery cell according to any one of claims 1-8.

10. A battery pack, characterized in that: include: A box body and a plurality of battery cells according to claim 9, wherein a cavity is formed in the box body, a plurality of the battery cells are stacked and arranged in the cavity, and a mounting plate of the battery cells is detachably connected to the box body.

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