Lithium battery pack terminal and lithium battery pack

Abstract

The lithium battery pack terminal comprises a first line bank, a second line bank, a connecting assembly, a protection assembly and a clamping seat assembly, the first line bank is electrically connected to the positive electrode of a group of lithium batteries, and the second line bank is electrically connected to the negative electrode of the group of lithium batteries; the connecting assembly is used for connecting positive and negative electrodes of adjacent row groups of lithium batteries, the protection assembly is arranged outside the lithium batteries, the protection assembly is used for shielding a joint of the connecting assembly, the clamping seat assembly is arranged outside the lithium batteries, and the clamping seat assembly is also used for clamping and limiting the protection assembly. According to the utility model, the lithium battery, the first line bank, the second line bank, the connecting assembly and the clamping seat assembly are used in a matched manner, and the binding cap can be clamped outside the screw cap of the connecting assembly and can limit the protective frame, so that the protective frame and the protective pad can protect the side of the lithium battery, and the service life of the lithium battery is prolonged. And the lithium battery is prevented from being damaged by pressure at the bolt joint of the connecting assembly.

Description

A lithium battery pack terminal and a lithium battery pack Technical Field

[0001] This utility model relates to the field of lithium batteries, and in particular to a lithium battery pack terminal and a lithium battery pack. Background Technology

[0002] A lithium battery pack is made up of multiple lithium batteries arranged in a horizontal and vertical line. The terminals of the lithium battery pack are the parts that connect the battery pack to the external circuit and are responsible for transmitting current and signals. In a lithium battery pack, the rationality and reliability of the terminal design directly affect the performance, safety and service life of the battery pack.

[0003] When wiring lithium batteries, they are usually connected in parallel in a row, with the positive and negative terminals of adjacent battery rows connected in series. When connecting the positive and negative terminals of adjacent battery rows, conductive wires are usually used, and the connection method is usually bolts or welding. However, since the positive and negative terminals of adjacent battery rows are located on the side of the lithium battery, the connection point on the side may come into direct contact with the lithium battery when the battery row is packaged or sealed, which may cause external pressure damage to the lithium battery and thus result in a certain defect. Summary of the Invention

[0004] The purpose of this invention is to provide a lithium battery pack terminal and a lithium battery pack to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery pack terminal for connecting the positive and negative terminals of a lithium battery, comprising:

[0006] The first terminal block is electrically connected to the positive terminal of a group of lithium batteries;

[0007] The second terminal block is electrically connected to the negative terminal of a group of lithium batteries;

[0008] A connection component for connecting the positive and negative terminals of adjacent rows of lithium batteries;

[0009] A protective component is disposed outside the lithium battery and is used to shield the connection point of the connecting component.

[0010] A retainer assembly is disposed outside the lithium battery, and the retainer assembly is also used to retain and limit the engagement of the protective component.

[0011] Preferably, the connection component includes:

[0012] The third terminal block is inclinedly disposed on one side of the first terminal block and the second terminal block;

[0013] The bolts, the third terminal block, the first terminal block and the second terminal block are all provided with through holes that match the bolts;

[0014] Nut, the nut being threaded onto the end of the outer wall of the bolt.

[0015] Preferably, the protective component includes:

[0016] A protective frame, which is fitted over the outside of the lithium battery;

[0017] A protective pad is connected to the inside of the protective frame, and the inner wall of the protective pad is in contact with the lithium battery;

[0018] A restraint cap is fixedly connected to the outside of the protective frame and is slidably engaged with the outside of the nut.

[0019] Preferably, the card holder assembly includes:

[0020] The first card holder is snapped onto the top of the lithium battery;

[0021] The second retainer is engaged with the bottom of the lithium battery, and the first and second retainers are used to limit the position of the protective components.

[0022] Preferably, the card holder assembly further includes:

[0023] A support column is disposed between the first card holder and the second card holder;

[0024] The fixing screw has a groove on the opposite side of the first and second card holders that matches the fixing screw, and the end of the outer wall of the fixing screw is threaded to the support column.

[0025] Preferably, the protective component further includes:

[0026] A fixing plate, the end of which is fixedly connected to the protective frame;

[0027] The support rod has its end fixedly connected to the protective frame, and the first and second card seats each have a corresponding slot on their opposite sides.

[0028] Another objective of this invention is to provide a lithium battery pack, which includes the aforementioned lithium battery pack terminals.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] This utility model utilizes the combined use of a lithium battery, a first terminal block, a second terminal block, a connecting component, and a card holder component. The protective component includes a protective frame, a protective pad, and a restraint cap. The restraint cap can be snapped onto the outside of the nut of the connecting component and can limit the movement of the protective frame, thereby protecting the sides of the lithium battery from pressure damage caused by the bolt connection of the connecting component. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 is a schematic diagram of the internal structure of part of the front of this utility model;

[0033] Figure 3 is a schematic diagram of the internal structure of the restraint cap of this utility model.

[0034] In the diagram: 1. Lithium battery; 2. First terminal block; 3. Second terminal block; 4. Connecting assembly; 41. Third terminal block; 42. Bolt; 43. Nut; 5. Protective assembly; 51. Protective frame; 52. Protective pad; 53. Restraint cap; 54. Fixing plate; 55. Support rod; 6. Card slot assembly; 61. First card slot; 62. Second card slot; 63. Support column; 64. Fixing screw. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] This utility model provides a lithium battery pack terminal as shown in Figures 1-3, used for connecting the positive and negative terminals of lithium battery 1.

[0037] Example 1

[0038] The assembly includes a first terminal block 2, a second terminal block 3, a connecting component 4, a protective component 5, and a retainer assembly 6. The first terminal block 2 is electrically connected to the positive terminal of a group of lithium batteries 1, and the second terminal block 3 is electrically connected to the negative terminal of a group of lithium batteries 1, as shown in Figure 1. The first terminal block 2 and the second terminal block 3 are used to connect the positive and negative terminals of a group in parallel, respectively. The connecting component 4 is used to connect the positive and negative terminals of adjacent groups of lithium batteries 1, and to connect the positive and negative terminals of adjacent groups of lithium batteries 1 in series. The number of lithium batteries 1 connected in parallel and in series is related to the final product design model of the lithium batteries 1, and it belongs to the prior art, so it will not be described in detail here. The protective component 5 is set on the outside of the lithium batteries 1. The protective component 5 is used to shield the connection of the connecting component 4, thereby improving the stability of multiple lithium batteries 1 combinations and preventing the connecting component 4 from damaging the lithium batteries 1. The retainer assembly 6 is set on the outside of the lithium batteries 1 and is also used to retain and limit the protective component 5.

[0039] Specifically, the connecting component 4 includes a third terminal block 41, a bolt 42, and a nut 43. The third terminal block 41 is inclinedly disposed on one side of the first terminal block 2 and the second terminal block 3. The ends of the third terminal block 41, the first terminal block 2, and the second terminal block 3 are all provided with through holes that match the bolt 42. The nut 43 is threaded onto the end of the outer wall of the bolt 42, as shown in Figure 1. The third terminal block 41 connects the staggered first terminal block 2 and the second terminal block 3 through the bolt 42 and the nut 43, realizing the series connection of adjacent lithium battery groups 1.

[0040] In particular, the protective component 5 includes a protective frame 51, a protective pad 52, and a restraint cap 53. The protective frame 51 is fitted onto the outside of the lithium battery 1, the protective pad 52 is connected to the inside of the protective frame 51, and the inner wall of the protective pad 52 is in contact with the lithium battery 1. The two protective frames 51 are wrapped around the outside of the multiple lithium batteries 1 through the protective pad 52. The restraint cap 53 is fixedly connected to the outside of the protective frame 51 and slides and engages with the outside of the nut 43. The restraint cap 53 can engage and limit the nut 43 so that the rotating bolt 42 can engage with the nut 43, and can also prevent the nut 43 and bolt 42 from squeezing the lithium battery 1.

[0041] Example 2

[0042] Based on Embodiment 1, the card holder assembly 6 includes a first card holder 61 and a second card holder 62. The first card holder 61 is attached to the top of the lithium battery 1, and the second card holder 62 is attached to the bottom of the lithium battery 1. The first card holder 61 and the second card holder 62 are used to limit the protective component 5. Both the first card holder 61 and the second card holder 62 are provided with heat dissipation holes to ensure the normal heat dissipation of the lithium battery 1.

[0043] Furthermore, the card holder assembly 6 also includes a support post 63 and a fixing screw 64. The support post 63 is disposed between the first card holder 61 and the second card holder 62. The opposite sides of the first card holder 61 and the second card holder 62 are provided with grooves that match the fixing screw 64. The end of the outer wall of the fixing screw 64 is threadedly connected to the support post 63. Under the action of the support post 63 and the fixing screw 64, the stability of the first card holder 61 and the second card holder 62 installed on the lithium battery 1 can be guaranteed, thereby ensuring the stability of the lithium battery 1 assembly.

[0044] Furthermore, the protective assembly 5 also includes a fixing plate 54 and a support rod 55. The end of the fixing plate 54 is fixedly connected to the protective frame 51, and the fixing plate 54 can ensure the stability of the distance between the two protective frames 51. The end of the support rod 55 is fixedly connected to the protective frame 51. The first card holder 61 and the second card holder 62 are each provided with a slot corresponding to the support rod 55 on their opposite sides. One end of the outer wall of the support rod 55 is engaged with the slot, which can limit the position of the two protective frames 51 outside the lithium battery 1, thereby ensuring the stability of the installation of the two protective frames 51.

[0045] As shown in Figure 1, this embodiment provides a lithium battery pack, which includes the lithium battery pack terminals described above. The lithium battery pack is composed of multiple lithium batteries arranged longitudinally and transversely in the first card holder 61 and the second card holder 62.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery pack terminal for connecting the positive and negative terminals of a lithium battery (1), characterized in that, include: First terminal block (2), the first terminal block (2) is electrically connected to the positive terminal of a group of lithium batteries (1); second terminal block (3), the second terminal block (3) is electrically connected to the negative terminal of a group of lithium batteries (1); connecting component (4), the connecting component (4) is used to connect the positive and negative terminals of adjacent groups of lithium batteries (1); protective component (5), the protective component (5) is disposed outside the lithium battery (1), the protective component (5) is used to shield the connection point of the connecting component (4); card holder component (6), the card holder component (6) is disposed outside the lithium battery (1), the card holder component (6) is also used to lock and limit the protective component (5).

2. A lithium battery pack terminal according to claim 1, characterized in that, The connecting assembly (4) includes: a third terminal block (41), which is inclinedly disposed on one side of the first terminal block (2) and the second terminal block (3); a bolt (42), the ends of the third terminal block (41), the first terminal block (2) and the second terminal block (3) are provided with through holes that match the bolt (42); and a nut (43), which is threaded onto the end of the outer wall of the bolt (42).

3. A lithium battery pack terminal according to claim 2, characterized in that, The protective component (5) includes: a protective frame (51) which is fitted onto the outside of the lithium battery (1); a protective pad (52) which is connected to the inside of the protective frame (51) and the inner wall of the protective pad (52) is in contact with the lithium battery (1); and a restraint cap (53) which is fixedly connected to the outside of the protective frame (51) and the restraint cap (53) is slidably engaged with the outside of the nut (43).

4. A lithium battery pack terminal according to claim 3, characterized in that, The card holder assembly (6) includes: a first card holder (61) which is engaged with the top of the lithium battery (1); and a second card holder (62) which is engaged with the bottom of the lithium battery (1). The first card holder (61) and the second card holder (62) are used to limit the position of the protective component (5).

5. A lithium battery pack terminal according to claim 4, characterized in that, The card holder assembly (6) further includes: a support column (63), which is disposed between the first card holder (61) and the second card holder (62); and a fixing screw (64), wherein the opposite sides of the first card holder (61) and the second card holder (62) are provided with grooves that match the fixing screw (64), and the end of the outer wall of the fixing screw (64) is threadedly connected to the support column (63).

6. A lithium battery pack terminal according to claim 5, characterized in that, The protective component (5) further includes: a fixing plate (54), the end of which is fixedly connected to the protective frame (51); a support rod (55), the end of which is fixedly connected to the protective frame (51), and a slot corresponding to the support rod (55) is provided on the opposite side of the first card seat (61) and the second card seat (62).

7. A lithium battery pack, characterized in that, The lithium battery pack includes the lithium battery pack terminals as described in any one of claims 1-6.

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