End plate, battery module and battery pack

Abstract

The utility model provides an end plate, a battery module and a battery pack, the end plate provided by the utility model is arranged at the end part of the battery module and comprises a plate body, and hoisting holes and fixing positions which are arranged on the plate body, and at least two hoisting holes and at least two fixing positions are arranged in sequence along the width direction of the battery module; each fixing position is positioned on one side, facing each battery cell group in the battery module, of the plate body, and is arranged in one-to-one correspondence with each battery cell group so as to fix the end part of the corresponding battery cell group; and each hoisting hole is formed by concave molding of the plate body and is used for being connected with a hook of hoisting equipment. The end plate disclosed by the utility model not only can reduce the number of workpieces and the time for the battery module to enter a shell so as to be beneficial to improving the assembly efficiency of the battery pack, but also can reduce the occupation of the internal space of the battery pack and ensure that the battery pack has better energy density, so that the end plate has higher practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an end plate. Meanwhile, the utility model also relates to a battery module of the end plate, and a battery pack provided with the battery module. Background Art

[0002] At present, a single square lithium battery module usually has two end plates at both ends, with several battery cells in the middle of the end plates. When a single module is assembled into a shell, four hooks of a lifting equipment are usually hooked on the hook holes of each end plate, and then the single module is lifted into the shell.

[0003] When the end plate of a conventional battery module is in the process of putting the battery module into the shell, if there are multiple single modules in the battery pack, then the assembly time required to lift all the single modules into the shell will be relatively long, which will increase the process assembly time of a single battery pack, reduce efficiency, and is not conducive to increasing production capacity. Utility Model Content

[0004] In view of this, the present invention aims to provide an end plate, which is beneficial to improving the assembly efficiency of a battery pack.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An end plate is arranged at the end of a battery module, comprising a plate body, and a hoisting hole and a fixing position arranged on the plate body, and along the width direction of the battery module, the hoisting hole and the fixing position are at least two arranged in sequence;

[0007] Each of the fixing positions is located on a side of the plate body facing each battery cell group in the battery module, and is arranged one-to-one corresponding to each battery cell group, so as to fix the end of the corresponding battery cell group;

[0008] Each of the hoisting holes is concavely formed in the plate body and is used to be connected to a hook of a hoisting device.

[0009] Furthermore, each of the hanging holes is located on a side of the plate body away from each of the battery cell groups, and along the width direction of the battery module, there are two hanging holes respectively arranged on both sides of the plate body.

[0010] Furthermore, along the width direction of the battery module, threaded holes are respectively provided on both sides of the plate body, and each of the threaded holes is used to fix the plate body in the shell of the battery pack.

[0011] Furthermore, each of the threaded holes is arranged through the plate body along the height direction of the battery module, and each of the threaded holes is respectively connected to the lifting hole on the corresponding side.

[0012] Furthermore, the plate body is provided with a limiting slot, and the limiting slot can limit the movement of the straps used to fix each of the battery cell groups.

[0013] Furthermore, the plate body is provided with a protrusion protruding toward a side away from each of the battery cell groups, and the limiting slot is formed between two of the protrusions.

[0014] Furthermore, a reinforcing rib is provided on one side of the plate body away from each of the battery cell groups; and / or two protective bases are provided on the top of the plate body, each of the protective bases is used to form insulation protection for the positive bus and the negative bus in the battery module.

[0015] Furthermore, the reinforcing ribs include mutually intersecting transverse ribs and longitudinal ribs provided on the plate body, the transverse ribs are extended along the width direction of the battery module, and the longitudinal ribs are extended along the height direction of the battery module.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The end plate described in the utility model can fix multiple battery cell groups at one time by setting multiple fixing positions, and after co-setting the lifting holes, two or more battery cell groups can be lifted into the shell in one time, thereby reducing the number of workpieces and the time for battery module to enter the shell, which is beneficial to improving the assembly efficiency of the battery pack. At the same time, the lifting holes are concavely formed by the plate body, which is beneficial to realize a hidden design, does not occupy the internal space of the battery pack, and is beneficial to ensure that the battery pack has a good energy density, thereby having a good use effect.

[0018] Secondly, the lifting holes are located on the side of the plate away from the battery pack, which can avoid interference between the hook and the battery pack during the lifting operation. The two lifting holes are located on both sides of the plate, which is conducive to improving the stability of the lifting operation. The setting of the threaded hole is conducive to ensuring the structural stability of the battery pack. The setting of the limit slot can fix the position of the strap to prevent the strap from shifting and causing the battery module structure to become unstable.

[0019] In addition, the limit slot is formed between the two protrusions on the plate body, with a simple structure and reasonable layout. The setting of the reinforcing ribs is conducive to achieving weight reduction while ensuring the structural strength of the end plate. The setting of the protective base is conducive to the insulation and protection of the positive bus and the negative bus, ensuring the safety of the battery pack. The reinforcing ribs are mainly composed of cross-intersecting transverse ribs and longitudinal ribs, which have better structural reinforcement effect, simple structure, and low mold development cost.

[0020] In addition, another object of the present invention is to provide a battery module, comprising a plurality of battery cell groups, and the end plates as described above disposed at the ends of each of the battery cell groups.

[0021] In addition, another object of the present invention is to provide a battery pack, wherein the battery module is disposed in a shell of the battery pack.

[0022] The battery module, battery pack and the end plate described in the present invention have the same beneficial effects as those of conventional technologies, and will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a structural schematic diagram of an end plate according to an embodiment of the utility model when it is installed on a battery module;

[0025] Figure 2 This is a schematic diagram of the structure of the end plate and the protective base when they are assembled according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic structural diagram of the end plate according to an embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the protective base described in an embodiment of the utility model;

[0028] Description of reference numerals:

[0029] 10. Battery module; 100. Battery cell group;

[0030] 1. Plate body; 11. Lifting hole; 12. Fixing position; 13. Threaded hole; 14. Protrusion; 141. Limiting slot; 15. Horizontal rib; 16. Longitudinal rib; 17. Protective base; 171. Placement table; 172. Hook; 18. Card slot; 19. Binding strap. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] Embodiment 1

[0036] The present embodiment relates to an end plate, which is arranged at the end of the battery module 10, which helps to reduce the number of workpieces and the time for the battery module 10 to enter the shell, so as to improve the assembly efficiency of the battery pack, and can reduce the space occupied by the battery pack, ensuring that the battery pack has a better energy density.

[0037] In terms of overall structure, Figures 1 to 4 As shown, the end plate of this embodiment includes a plate body 1, and a hoisting hole 11 and a fixing position 12 provided on the plate body 1, and along the width direction of the battery module 10, there are at least two hoisting holes 11 and fixing positions 12 arranged in sequence.

[0038] Each fixing position 12 is located on the side of the plate body 1 facing each battery cell group 100 in the battery module 10, and is arranged one by one with each battery cell group 100, so as to fix the end of the corresponding battery cell group 100. Each lifting hole 11 is concavely formed by the plate body 1, and is used to connect with the hook of the lifting equipment.

[0039] It is worth noting that the relevant structural parts not mentioned in the battery module 10 of this embodiment can refer to the various structures of the battery module 10 products known to those skilled in the art. For example, in addition to the above-mentioned end plates and battery cell groups 100, the battery pack also includes other components such as a return bus.

[0040] At the same time, the specific structure of the battery cell group 100 of this embodiment is composed of multiple battery cells arranged in sequence, and the battery cell here refers to a square shell battery cell in particular. Since the structure and effect of fixing two groups of battery cell groups 100 by the end plate are basically the same as that of fixing multiple groups of battery cell groups 100, this embodiment is described below by taking the battery cell module including two groups of battery cell groups 100, that is, the end plate including two fixing positions 12 as an example.

[0041] Specifically, in this embodiment, as a preferred implementation form, see Figure 2 and Figure 3As shown, each lifting hole 11 is located on a side of the plate body 1 away from each battery cell group 100 , and along the width direction of the battery module 10 , there are two lifting holes 11 respectively arranged on both sides of the plate body 1 .

[0042] It can be understood that each lifting hole 11 is located on the side of the plate body 1 away from each battery cell group 100, which can avoid interference between the hook and the battery cell group 100 during the lifting operation, and the lifting holes 11 are two respectively arranged on both sides of the plate body 1, which is conducive to improving the stability of the lifting operation.

[0043] Furthermore, as a preferred implementation form, in this embodiment, along the width direction of the battery module 10, threaded holes 13 are respectively provided on both sides of the plate body 1, and each threaded hole 13 is used to fix the plate body 1 in the housing of the battery pack. In this way, not only is the cost reduction facilitated by adopting the screw connection method, but also the structural stability of the battery pack is ensured.

[0044] In the specific implementation, in this embodiment, as a preferred implementation form, each threaded hole 13 is arranged through the plate body 1 along the height direction of the battery module 10, and each threaded hole 13 is respectively connected to the hoisting hole 11 on the corresponding side. The advantage of this arrangement is that the hook of the hoisting equipment can be hooked into the threaded hole 13 connected to the hoisting hole 11, thereby improving the reliability of the hoisting operation.

[0045] In addition, in this embodiment, as a preferred implementation form, still refer to Figure 2 As shown, the plate body 1 is provided with a limit slot 141, which can limit the movement of the strap 19 used to fix each battery cell group 100. In this way, the strap 19 is prevented from deviating and causing the battery module 10 to become unstable. Furthermore, the strap 19 here can be a steel strap commonly used by those skilled in the art.

[0046] In detail, in this embodiment, as a preferred implementation form, the plate body 1 is provided with a protrusion 14 protruding toward the side away from each battery cell group 100, and the limit slot 141 is formed between the two protrusions 14. The advantage of such a setting is that the structure is simple and the layout is reasonable, which is conducive to improving the added value of the end plate.

[0047] In addition, see Figure 2 and Figure 3 As shown, in this embodiment, as a preferred implementation form, a reinforcing rib is provided on the side of the plate body 1 away from each battery cell group 100 to facilitate weight reduction while ensuring the structural strength of the end plate.

[0048] In specific implementation, in this embodiment, as a preferred implementation form, the reinforcing rib portion includes mutually intersecting transverse ribs 15 and longitudinal ribs 16 arranged on the plate body 1, the transverse ribs 15 extend along the width direction of the battery module 10, and the longitudinal ribs 16 extend along the height direction of the battery module 10.

[0049] In this way, not only the structural reinforcement effect is better, but also the structure is simple and the mold development cost is low. In the specific structure, the transverse ribs 15 and the longitudinal ribs 16 can be preferably set to multiple, and the multiple transverse ribs 15 and the multiple longitudinal ribs 16 can cross each other to form a grid-like reinforcement rib part to ensure that the plate body 1 has good structural strength.

[0050] In addition, as a preferred implementation form, in this embodiment, two protective bases 17 are provided on the top of the plate body 1, and each protective base 17 is used to form insulation protection for the positive bus and the negative bus in the battery module 10. This is conducive to forming insulation and protection for the positive bus and the negative bus, ensuring the safety of the battery pack.

[0051] In specific implementation, as a preferred implementation form, see Figure 4 As shown, the protective base 17 of this embodiment includes a main body, a placement platform 171 provided on the top of the main body for fixing the positive bus and the negative bus, and a hook 172 provided on the bottom of the main body, and combined with Figure 2 As shown, a clamping groove 18 for the clamping hook 172 to be clamped into is provided on the top of the plate body 1, so that the protective base 17 is clamped with the plate body 1, thereby improving the convenience of disassembly and assembly of the two.

[0052] The end plate of the present embodiment can fix multiple battery cell groups 100 at a time by setting multiple fixing positions 12, and after co-setting the lifting holes 11, two or more battery cell groups 100 can be lifted into the shell at one time, thereby reducing the number of workpieces and the time for the battery module 10 to enter the shell, so as to improve the assembly efficiency of the battery pack. At the same time, the lifting holes 11 are concavely formed by the plate body 1, which is conducive to realizing a hidden design, does not occupy the internal space of the battery pack, and is conducive to ensuring that the battery pack has a good energy density, thereby having a good use effect.

[0053] Embodiment 2

[0054] The present embodiment relates to a battery module 10, which includes a plurality of battery cell groups 100 and end plates disposed at the ends of each battery cell group 100, as in the first embodiment. At the same time, the present embodiment also relates to a battery pack, in which the battery module 10 is disposed.

[0055] The battery module 10 and battery pack of this embodiment, by providing the end plate in the first embodiment, can improve the efficiency of shell insertion while ensuring good energy density, thereby helping to increase production capacity and reduce manufacturing costs, thereby having better product competitiveness.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An end plate, arranged at the end of a battery module, characterized in that: It comprises a plate body, and a hoisting hole and a fixing position provided on the plate body, and along the width direction of the battery module, the hoisting hole and the fixing position are at least two arranged in sequence; Each of the fixing positions is located on a side of the plate body facing each battery cell group in the battery module, and is arranged one-to-one corresponding to each battery cell group, so as to fix the end of the corresponding battery cell group; Each of the hoisting holes is concavely formed in the plate body and is used to be connected to a hook of a hoisting device.

2. The end plate according to claim 1, characterized in that: Each of the hanging holes is located on a side of the plate body away from each of the battery cell groups and along a width direction of the battery module. There are two of the hanging holes, which are respectively arranged on both sides of the plate body.

3. The end plate according to claim 2, characterized in that: Along the width direction of the battery module, threaded holes are respectively provided on both sides of the plate body, and each of the threaded holes is used to fix the plate body in the shell of the battery pack.

4. The end plate according to claim 3, characterized in that: Each of the threaded holes is arranged through the plate body along the height direction of the battery module, and each of the threaded holes is communicated with the hoisting hole on the corresponding side.

5. The end plate according to claim 1, characterized in that: The plate body is provided with a limiting slot, and the limiting slot can limit the movement of the straps used to fix each of the battery cell groups.

6. The end plate according to claim 5, characterized in that: The plate body is provided with a protrusion protruding toward a side away from each of the battery core groups, and the limiting slot is formed between two of the protrusions.

7. The end plate according to any one of claims 1 to 6, characterized in that: A reinforcing rib is provided on one side of the plate away from each of the battery cell groups; and / or, Two protective bases are arranged on the top of the plate body, and each of the protective bases is used to form insulation protection for the positive busbar and the negative busbar in the battery module.

8. The end plate according to claim 7, characterized in that: The reinforcing ribs include mutually intersecting transverse ribs and longitudinal ribs arranged on the plate body, the transverse ribs extending along the width direction of the battery module, and the longitudinal ribs extending along the height direction of the battery module.

9. A battery module, characterized in that: The invention comprises a plurality of battery cell groups and an end plate according to any one of claims 1 to 8 arranged at the end of each of the battery cell groups.

10. A battery pack, characterized in that: The battery module according to claim 9 is arranged in the shell of the battery pack.

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