A series PACK structure battery pack

Abstract

The utility model belongs to battery technical field discloses a series connection type PACK structure battery package, including a plurality of battery unit that arranges in order, insulating plate, spring and aluminium band, the insulating plate sets up in the both sides of battery unit, the spring is fixed on the insulating plate and battery unit contact surface, the aluminium band sets up between spring and the pole of battery unit, is used for series connection battery unit, makes the aluminium band and battery unit pole contact surface close contact through the compression of spring force. The utility model makes the aluminium band and battery unit pole contact surface close contact through the compression of spring force, effectively solved the problem that battery unit is difficult to disassemble replacement in prior art because of laser welding, when the certain battery unit appears the trouble, releases the spring and can replace, reduced maintenance cost, avoided the resource waste that caused because single battery problem replaced entire battery package.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a series-connected PACK structure battery pack. Background Technology

[0002] Currently, most common battery pack structures use laser welding to connect multiple battery cells in series. This traditional method met the basic conductive connection requirements of battery packs for a certain period. Laser welding can form relatively fixed connection points, ensuring the transmission of current between battery cells and providing stable power support for various electronic devices and systems.

[0003] However, because laser welding creates a strong connection, it is difficult for maintenance personnel to separate a battery cell from the overall structure when it malfunctions or its performance deteriorates. This not only makes the repair process complex and time-consuming, increasing maintenance costs, but also requires replacing the entire battery pack due to a problem with a single battery cell, resulting in a huge waste of resources and seriously affecting the efficiency and economic benefits of the battery pack. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a series-connected PACK structure battery pack, which effectively solves the problem of difficult disassembly and replacement of battery cells due to laser welding in the prior art. When a battery cell fails, it can be replaced by releasing the spring, reducing maintenance costs and avoiding the waste of resources caused by replacing the entire battery pack due to a single battery problem.

[0005] The technical solution of this utility model is as follows: a series-connected PACK structure battery pack, including multiple battery cells, an insulating plate, a spring and an aluminum strip arranged in sequence. The insulating plate is disposed on both sides of the battery cell, the spring is fixed to the contact surface between the insulating plate and the battery cell, and the aluminum strip is disposed between the spring and the terminal of the battery cell for connecting the battery cells in series. The clamping force of the spring makes the aluminum strip and the contact surface of the battery cell terminal make tight contact.

[0006] Preferably, the battery cell includes multiple batteries 1 and batteries 2, with the terminals of batteries 1 in contact with the terminals of batteries 2.

[0007] Preferably, it further includes a conductive retaining ring, which is sleeved at the connection between the terminal of battery one and the terminal of battery two to enhance the conductive connection between battery one and battery two.

[0008] Preferably, the insulating plate has multiple fixing holes.

[0009] Preferably, the aluminum strip is provided with a detection hole, which is located between adjacent battery cells.

[0010] Preferably, the aluminum strip is provided with a first circular hole and a second circular hole in sequence, and the first circular hole and the second circular hole are arranged with the same center.

[0011] Preferably, the inner diameter of the first circular hole is larger than the inner diameter of the second circular hole.

[0012] Preferably, the terminal end of the battery cell is located inside the first circular hole and the second circular hole.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0014] In this application, the spring is fixed to the contact surface between the insulating plate and the battery cell, and the aluminum strip is set between the spring and the battery cell terminal. The clamping force of the spring makes the aluminum strip and the contact surface of the battery cell terminal tightly contacted, which effectively solves the problem that the battery cell is difficult to disassemble and replace due to laser welding in the prior art. When a battery cell fails, it can be replaced by releasing the spring, which reduces maintenance costs and avoids the waste of resources caused by replacing the entire battery pack due to a single battery problem. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the structure of this utility model;

[0017] Figure 2 This is a front view of the battery and aluminum strip structure in this utility model;

[0018] Figure 3 This is a front view of the insulating plate structure in this utility model;

[0019] Figure 4 This is a cross-sectional view of the insulating plate structure in this utility model;

[0020] Figure 5 This is a front view of the aluminum strip structure of this utility model;

[0021] Figure 6 This is a cross-sectional view of the aluminum strip structure of this utility model.

[0022] In the attached image:

[0023] 1. Insulating plate; 11. Fixing hole; 2. Spring; 3. Aluminum strip; 31. Detection hole; 32. First round hole; 33. Second round hole; 4. Battery one; 5. Battery two; 6. Conductive retaining ring. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] Please see Figure 1-6 A series-connected battery pack includes multiple battery cells arranged in sequence, an insulating plate 1, a spring 2, and an aluminum strip 3. The insulating plate 1 is disposed on both sides of the battery cells. The spring 2 is fixed to the contact surface between the insulating plate 1 and the battery cells. The aluminum strip 3 is disposed between the spring 2 and the terminals of the battery cells for series connection of the battery cells. The clamping force of the spring 2 ensures that the aluminum strip 3 is in close contact with the contact surface of the battery cell terminals. The battery cells are placed inside the insulating plate 1, the spring 2 is fixed to the contact surface between the insulating plate 1 and the battery cells, and then the aluminum strip 3 is placed between the spring 2 and the terminals of the battery cells. The elastic clamping force of the spring 2 ensures that the aluminum strip 3 is in close contact with the contact surface of the battery cell terminals, achieving series connection of the battery cells. This results in stable conductive connection between the battery cells, eliminates the need for complex welding processes, facilitates assembly and production, and effectively improves the manufacturing efficiency of the battery pack.

[0027] The battery unit includes multiple batteries 4 and 5, with the terminals of batteries 4 in contact with those of batteries 5. A conductive retaining ring 6 is fitted at the connection point between the terminals of batteries 4 and 5 to enhance the conductive connection. Arranging multiple batteries 4 and 5 sequentially, ensuring tight contact between the terminals of batteries 4 and 5, and fitting the conductive retaining ring 6 at the connection point enhances the conductive connection between batteries 4 and 5, improves current transmission efficiency, reduces energy loss, ensures the overall stability and reliability of the battery pack's power supply, and extends the battery pack's lifespan.

[0028] The insulating plate 1 is provided with multiple fixing holes 11, which are divided into upper and lower groups. One end of the spring 2 is placed in the fixing hole 11, and the fixing hole 11 provides a fixed support point for the spring.

[0029] The aluminum strip 3 has a detection hole 31 located between adjacent battery cells. During the use of the battery pack, the probe of the testing equipment can be brought into contact with the detection point of the battery cell through the detection hole 31 to obtain key information such as the voltage and temperature of the battery cell.

[0030] The aluminum strip 3 has a first circular hole 32 and a second circular hole 33 arranged concentrically. The inner diameter of the first circular hole 32 is larger than the inner diameter of the second circular hole 33. The terminal end of the battery unit is located inside the first circular hole 32 and the second circular hole 33. When welding the battery pack to the external circuit, the first circular hole 32 and the second circular hole 33 can avoid the welding protrusions of the sealing pins, thus avoiding the problem of poor soldering caused by unevenness of the protrusions.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A series-connected battery pack, characterized in that, include: Multiple battery cells arranged in sequence; Insulating plates (1) are disposed on both sides of the battery cell; Spring (2) is fixed to the contact surface between the insulating plate (1) and the battery cell; An aluminum strip (3) is placed between the spring (2) and the battery cell terminal to connect the battery cells in series. The clamping force of the spring (2) makes the aluminum strip (3) and the battery cell terminal contact surface in close contact.

2. The series-connected PACK structure battery pack as described in claim 1, characterized in that, The battery unit includes multiple battery one (4) and battery two (5), with the terminal of battery one (4) in contact with the terminal of battery two (5).

3. The series-connected PACK structure battery pack as described in claim 2, characterized in that, It also includes a conductive retaining ring (6), which is fitted at the connection between the terminal of battery one (4) and the terminal of battery two (5) to enhance the conductive connection between battery one (4) and battery two (5).

4. The series-connected PACK structure battery pack as described in claim 1, characterized in that, The insulating plate (1) is provided with multiple fixing holes (11).

5. The series-connected PACK structure battery pack as described in claim 1, characterized in that, The aluminum strip (3) is provided with a detection hole (31), which is located between adjacent battery cells.

6. The series-connected PACK structure battery pack as described in claim 1, characterized in that, The aluminum strip (3) is provided with a first circular hole (32) and a second circular hole (33) in sequence, and the first circular hole (32) and the second circular hole (33) are arranged with the same center.

7. The series-connected PACK structure battery pack as described in claim 6, characterized in that, The inner diameter of the first circular hole (32) is larger than the inner diameter of the second circular hole (33).

8. The series-connected PACK structure battery pack as described in claim 7, characterized in that, The terminal end of the battery cell is located inside the first circular hole (32) and the second circular hole (33).

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