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Columnar secondary battery and battery controller

A battery controller and controller technology, which is applied in secondary batteries, secondary battery repair/maintenance, electrochemical generators, etc., can solve the problems of insufficient layout space, low welding efficiency, and affecting battery capacity, etc.

Pending Publication Date: 2020-10-23
麦格松(湖北)电源系统有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this structure has low welding efficiency, and needs to insert the electrode caps one by one and spot-weld each pin one by one, which leads to high production costs; Out of the position of the pin hole and the pad of the pin, and in order to avoid the short circuit between the pin and other components, the pad of the pin must be kept away from other components by a certain distance, resulting in a serious shortage of layout space for other components, so some parts have to be saved. Functional components or components are placed on the front of the circuit board to increase the overall height of the controller in the axial direction, thereby affecting the battery capacity

Method used

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  • Columnar secondary battery and battery controller
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  • Columnar secondary battery and battery controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0172] Example 1, N-type No. 5 steel shell lithium ion secondary battery.

[0173] See figure 1 with figure 2 The battery 100a mainly includes a battery cell 200a and a controller 400a. The cell 200a has a cylindrical shape and has a cell positive electrode 230a and a cell negative electrode 220a. The controller 400a is coaxially arranged on the end where the positive electrode 230a of the cell is located and is packaged as a whole with the No. 5 steel shell cell 200a.

[0174] The cell 200a shown in this embodiment is a CID cell, that is, a cell with a current cut-off protection structure. When the cell fails (such as overheating, short circuit, overcharge, etc.), a lot of gas will be generated inside, and when the pressure increases, The inside of the battery cell will be automatically disconnected to protect it.

[0175] The outer shell of the cell 200a is a steel shell, and the internal structure of the cell is not the main technical problem solved by the present invention, so...

Embodiment 2

[0250] Example 2, N-type No. 5 soft-packed lithium ion secondary battery.

[0251] Figure 14 to Figure 20 It is the structure diagram of the N-type No. 5 soft pack lithium ion secondary battery and its controller.

[0252] See Picture 14 with Figure 15 The battery 100b includes a battery housing 110b, a battery cell 200b and a controller 400b.

[0253] The battery cell 200b of this embodiment is a soft-packed lithium ion battery cell, which is also cylindrical, like the above-mentioned embodiment, and has a battery cell positive electrode 230b and a battery cell negative electrode 220b.

[0254] The battery housing 110b is a cylindrical structure with one end open and the other end closed. The cell positive electrode 230b is a positive electrode sheet, and the cell negative electrode 220b is a negative electrode sheet.

[0255] The positive electrode 230b of the cell is a tab structure with a certain length. After the negative electrode 220b of the cell is extended, it is bent again...

Embodiment 3

[0265] Example 3, N-type No. 7 steel shell lithium ion secondary battery.

[0266] Figure 21 to Figure 27 It is the structure diagram of N-type No. 7 steel shell lithium ion secondary battery and its controller.

[0267] The structure of the secondary battery in this embodiment is similar to that in embodiment 1. The difference is that embodiment 1 is AA battery and this embodiment is AA battery. Since the diameter of AA battery is smaller than that of AA battery, the controller There may be slight differences in design, which are mainly manifested in: In this embodiment, the movable end of the inner electrode 330c of the controller 400c supporting the lithium-ion secondary battery of the No. 7 steel shell is circular, and the electrode cap pad 310c has a different shape.

[0268] See Figure 21 , The battery 100c includes: a battery cell 200c and a controller 400c.

[0269] The battery cell 200c of this embodiment is a steel shell lithium ion battery cell, which is also cylindrical ...

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Abstract

The invention discloses a columnar secondary battery and a battery controller, the battery comprises a battery cell and a controller coaxially packaged with the battery cell, the controller comprisesa circuit board and an electrode cap, the circuit board comprises a first surface and a second surface which are opposite to each other, and a circuit component is arranged and welded on the second surface; and the electrode cap is made of a conductive metal material and is welded on the first surface of the circuit board in a patch mode, an electrode cap bonding pad used for welding the electrodecap is arranged on the first surface of the circuit board, and a channel is formed in the electrode cap bonding pad. The structure of the controller is optimized by welding the electrode caps in a patch mode, so that the axial height of the controller is reduced, and the absolute storage energy and the volumetric specific energy of the rechargeable battery are further improved.

Description

Technical field [0001] The invention relates to a columnar battery, in particular to a columnar lithium ion secondary battery technology and a battery controller applied to the battery. Background technique [0002] GB / T 8897.2 (IEC 60086-2) standardized cylindrical primary batteries, such as China's popular specifications of No. 5 batteries, No. 7 batteries, etc., have been widely used in the field of handheld or portable electronic and electrical products. Because primary batteries cannot be reused, and there are problems such as high battery usage costs and environmental pollution by discarded batteries, the consumer market is increasingly demanding rechargeable battery products that can replace GB / T 8897.2 (IEC 60086-2) standardized primary batteries . [0003] With the rapid development of lithium ion battery charge and discharge control technology, the charge and discharge control circuit is adopted to control the charge and discharge of the lithium ion battery, and then the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/0525H01M2/20
CPCH01M10/425H01M10/0525Y02E60/10
Inventor 李松赵家悦邓爱雯
Owner 麦格松(湖北)电源系统有限责任公司