Multi-series battery pack structure

Abstract

The utility model discloses a multi-series battery pack structure in the technical field of storage batteries, which comprises battery cells, insulation sheets, insulation protection plates, electrode plates and protection modules, the insulation sheets are arranged between the adjacent battery cells and used for isolating the adjacent battery cells, and the insulation protection plates are arranged on the upper layers of the battery cells and used for providing additional insulation protection; the protection module is arranged around the battery cell and is used for preventing an external object from being in direct contact with the battery cell; by additionally arranging the insulation protection plate, the insulation sheet and the protection module, multiple safety protection of the lithium battery is realized, the safety and the stability of the lithium battery are improved, and the lithium battery structure has the advantages of simple structure, easiness in manufacturing, low cost and the like, is suitable for various occasions needing high-safety and high-stability lithium batteries, and has wide application prospects. And the arranged insulation protection plate is elastically connected with the protection module, so that the impact resistance of the battery cell is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a multi-series battery pack structure. Background Technology

[0002] With the advancement of technology and the rapid development of the new energy industry, lithium batteries, as important energy storage components, have been widely used in electric vehicles, portable electronic devices, and energy storage systems. However, lithium batteries pose safety hazards during use, such as overcharging, over-discharging, short circuits, and high temperatures. In the event of a malfunction, these hazards can lead to fires or even explosions, threatening personal safety and property. Furthermore, integrated battery packs are prone to deformation from even minor impacts, potentially causing battery explosions, short circuits, and fires. Therefore, designing a lithium battery structure with multiple safety protection functions is of paramount importance.

[0003] Based on this, the present invention designs a multi-series battery pack structure to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-series battery pack structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-series battery pack structure includes battery cells, insulating sheets, insulating protection plates, electrode plates, and protective modules. The insulating sheets are disposed between adjacent battery cells to isolate them. The insulating protection plates are disposed on the upper layer of the battery cells to provide additional insulation protection. The protective modules are arranged around the battery cells to prevent external objects from directly contacting them.

[0007] As a further aspect of this utility model: both the protective module and the insulating sheet are made of high-strength, wear-resistant and corrosion-resistant materials.

[0008] As a further embodiment of this utility model, the protective module is arranged around the battery cell to form one or more protective layers.

[0009] As a further embodiment of this utility model: the insulating protection plate and the protective module enclose a connecting cavity, a battery circuit board is installed in the connecting cavity, and an external wire is connected to the battery circuit board that passes through the protective module.

[0010] As a further embodiment of this utility model: the surface of the insulating protection plate has a plurality of pin ports, which are positioned opposite to the electrode plates.

[0011] As a further embodiment of this utility model, the insulating protection plate and the protective module are installed using an elastic connection method.

[0012] As a further embodiment of this utility model: the protective module is provided with multiple layers, and a vertical groove is provided on the side wall of the protective module. The side wall of the insulating protective plate is slidably engaged in the vertical groove. An internal spring is installed in the vertical groove in both the upper and lower directions to connect with the insulating protective plate and keep the insulating protective plate horizontal.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves multiple safety protections for lithium batteries by adding an insulating protection plate, insulating sheet and protective module, thereby improving the safety and stability of lithium batteries. The lithium battery structure has the advantages of simple structure, easy manufacturing and low cost, and is suitable for various occasions that require high safety and high stability lithium batteries.

[0015] 2. The insulating protection plate and the protective module of this utility model are elastically connected, which improves the impact resistance of the battery cell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the fully encapsulated protective module of this application;

[0018] Figure 3 This is a schematic diagram of the structure after removing the protective module and the insulating protection board;

[0019] Figure 4 for Figure 3 Top view;

[0020] Figure 5 This is a schematic diagram of the connection between the battery cell assembly and the electrode plates;

[0021] Figure 6 for Figure 5 Partial exploded view.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Protection module; 2. Battery circuit board; 3. Insulating protection board; 4. Electrode sheet; 5. Battery cell; 6. Insulating sheet; 7. External wiring. Detailed Implementation Example

[0024] Please see Figure 1-6This utility model provides a technical solution: a multi-series battery pack structure, including a battery cell 5, an insulating sheet 6, an insulating protection plate 3, an electrode sheet 4, and a protective module 1. The insulating sheet 6 is disposed between adjacent battery cells 5 to isolate adjacent battery cells 5. The insulating protection plate 3 is disposed on the upper layer of the battery cells 5 to provide additional insulation protection. The protective module 1 is arranged around the battery cells 5 to prevent external objects from directly contacting the battery cells 5.

[0025] The protective module 1 and the insulating sheet 6 are both made of high-strength, wear-resistant and corrosion-resistant materials.

[0026] The protective module is arranged around the battery cell 5 to form one or more protective layers;

[0027] During operation, the protection module 1 is arranged around the battery cell 5 to form one or more protective layers, such as... Figure 1 The structure shown is the protective box. The protective module 1 is made of high-strength, wear-resistant, and corrosion-resistant materials, such as metals and alloys. The main function of the protective module 1 is to prevent external objects (such as sharp objects, corrosive liquids, etc.) from directly contacting the battery cell 5, thereby avoiding damage to the battery cell 5 or causing safety accidents.

[0028] The insulating protection plate 3 and the protective module 1 enclose a connecting cavity, a battery circuit board 2 is installed in the connecting cavity, and an external wire 7 that passes through the protective module 1 is connected to the battery circuit board 2.

[0029] During operation, the battery circuit board 2 is mainly used to control the charging and discharging process, as well as to perform additional detection on multiple battery cells 5.

[0030] The insulating protection plate 3 has multiple pin ports on its surface, and the pin ports are positioned opposite to the electrode plate 4.

[0031] During operation, the pin ports are designed to facilitate the electrical connection between the battery circuit board 2 and the electrode plates. Example

[0032] The difference between this embodiment and Embodiment 1 is that:

[0033] The insulating protection board 3 and the protective module 1 are installed using a flexible connection method;

[0034] The protective module 1 has multiple layers, and the side wall of the protective module 1 has a vertical groove. The side wall of the insulating protection plate 3 is slidably locked in the vertical groove. The vertical groove has built-in springs that are connected to the insulating protection plate 3 and keep the insulating protection plate 3 horizontal in both the upper and lower directions.

[0035] During operation, the flexible connection provides the insulating protection plate 3 with a deformation space. When the protective module 1 is impacted, the insulating protection plate 3 will deform, providing a buffer space for the battery cell 5, preventing the battery cell 5 from deforming and improving its impact resistance. For example, by opening a vertical groove on the side wall of the protective module 1 in conjunction with a built-in spring, the insulating protection plate 3 has the ability to move up and down. When the protective module 1 is impacted from above, the impact from above, due to the buffer of the connecting cavity, has a certain deformation capacity. When the bottom of the protective module 1 is impacted, the battery cell 5 will be pushed upward. If the insulating protection plate 3 uses a rigid connection, it will directly cause the battery cell 5 to be squeezed and deformed. However, the insulating protection plate 3 will produce a small upward displacement at this time, thus providing a margin of upward movement for multiple battery cells 5, preventing the battery cell 5 from deforming and improving the overall impact resistance.

Claims

1. A multi-series battery pack structure, comprising a battery cell (5), an insulating sheet (6), an insulating protection plate (3), an electrode sheet (4), and a protective module (1), characterized in that: The insulating sheet (6) is disposed between adjacent cells (5) to isolate adjacent cells (5), and the insulating protection plate (3) is disposed on the upper layer of the cell (5) to provide additional insulation protection; the protective module (1) is arranged around the cell (5) to prevent external objects from directly contacting the cell (5).

2. The multi-series battery pack structure according to claim 1, characterized in that: Both the protective module (1) and the insulating sheet (6) are made of high-strength, wear-resistant and corrosion-resistant materials.

3. The multi-series battery pack structure according to claim 1, characterized in that: The protective module is arranged around the battery cell (5) to form one or more protective layers.

4. The multi-series battery pack structure according to claim 1, characterized in that: The insulating protection plate (3) and the protective module (1) enclose a connecting cavity, and a battery circuit board (2) is installed in the connecting cavity. An external wire (7) is connected to the battery circuit board (2) and passes through the protective module (1).

5. The multi-series battery pack structure according to claim 1, characterized in that: The insulating protection plate (3) has multiple pin ports on its surface, and the pin ports are positioned opposite to the electrode plate (4).

6. The multi-series battery pack structure according to claim 4, characterized in that: The insulating protection board (3) and the protective module (1) are installed in an elastic connection manner.

7. The multi-series battery pack structure according to claim 6, characterized in that: The protective module (1) has multiple layers. A vertical groove is provided on the side wall of the protective module (1). The side wall of the insulating protection plate (3) is slidably locked in the vertical groove. Built-in springs are installed in the vertical groove in both the upper and lower directions to connect with the insulating protection plate (3) and keep the insulating protection plate (3) horizontal.

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