Separated square lithium battery

Abstract

The utility model provides a separated square lithium battery, and relates to the technical field of lithium batteries. Comprising a shell and a single lithium battery arranged on the inner side of the shell, partition plates used for separating the single lithium battery are symmetrically and fixedly connected to the inner side of the shell, first conductive heads are symmetrically arranged on the two sides of the single lithium battery, and a negative wire and a positive wire are embedded in the inner side of the shell and arranged on the two sides of the single lithium battery respectively. Second conductive heads corresponding to the first conductive heads are connected to the negative wire and the positive wire at equal intervals, through holes allowing the second conductive heads to penetrate through are formed in the inner side of the shell, the second conductive heads are movably connected with the first conductive heads, top covers are connected to the top of the shell through bolts, and the top covers correspond to the single lithium batteries one to one. The lithium battery pack provided by the utility model solves the problem that the existing lithium battery pack cannot independently maintain single lithium batteries.

Description

Technical Field

[0001] The utility model provides a separate square lithium battery, which relates to the technical field of lithium batteries. Background Art

[0002] Lithium batteries are a widely used rechargeable battery, mainly used in fields such as mobile electronic devices, electric vehicles and energy storage systems. Their main features include high energy density, long life, low self-discharge rate and light weight. The working principle of lithium batteries is to store and release electrical energy through the movement of lithium ions. The battery contains two electrodes inside - the positive electrode (usually a lithium-containing compound) and the negative electrode (usually graphite), as well as an electrolyte (usually a lithium-containing salt solution or solid electrolyte). When the battery is discharged, lithium ions move from the negative electrode to the positive electrode to release electrical energy; when charging, lithium ions move from the positive electrode to the negative electrode to store electrical energy.

[0003] In the prior art, multiple single lithium batteries are usually connected in series or in parallel to form a battery pack to meet the user's requirements for lithium battery capacity and voltage. Single lithium batteries are usually installed in the shell through a porous fixing plate, and whether in parallel or in series, the electrodes of the single lithium batteries are welded with nickel sheets. This method is both strong and safe, but it also makes it inconvenient to disassemble and maintain the single lithium batteries. Even if parallel connection can minimize the impact of damage to the single lithium battery on the overall performance of the battery, it still needs to be disassembled or replaced as a whole during maintenance, which makes maintenance difficult and costly. For this reason, we propose a separate square lithium battery. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing lithium battery pack cannot perform maintenance on single lithium batteries separately.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a separable square lithium battery, comprising a shell and a single lithium battery arranged on the inner side of the shell, a partition for separating the single lithium battery is symmetrically fixed to the inner side of the shell, and conductive heads 1 are symmetrically arranged on both sides of the single lithium battery, and negative and positive lines are embedded in the inner side of the shell, and the negative and positive lines are respectively arranged on both sides of the single lithium battery, and conductive heads 2 corresponding to the conductive head 1 are equidistantly connected to the negative and positive lines, and a through hole for the conductive head 2 to pass through is opened on the inner side of the shell, and the conductive head 2 is movably connected to the conductive head 1, and a top cover is connected to the top of the shell by bolts, and the top cover corresponds to the single lithium battery one by one.

[0006] Preferably, the conductive head 1 includes a conductive terminal connected to a single lithium battery, and the outer side of the conductive terminal is wrapped with an insulating seat 1.

[0007] Preferably, the second conductive head includes a conductive spring, a conductive terminal seat fixedly connected to one end of the conductive spring, and a second insulating seat wrapped around the outside of the conductive terminal seat. The conductive spring is fixedly connected to the positive wire and the negative wire, and the end faces of the first insulating seat and the second insulating seat are inclined planes that cooperate with each other.

[0008] Preferably, a limiting groove is formed inside the housing, and the position of the limiting groove corresponds to that of the second conductive head.

[0009] Preferably, an insulating rubber ring is arranged inside the top cover, and bumps that cooperate with the limiting groove are arranged on both sides of the insulating rubber ring.

[0010] Preferably, the partition plate is T-shaped.

[0011] Advantages of the present utility model:

[0012] The parallel connection between single lithium batteries is realized through the positive wire and the negative wire. At the same time, through the movable connection of the first conductive head and the second conductive head, a separated structure is formed between the single lithium battery and the housing. When a certain single lithium battery is damaged subsequently, only the top cover at the corresponding position needs to be removed and the single lithium battery at the corresponding position needs to be taken out, without affecting the overall operation of the battery. Description of the drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of a separated square lithium battery of the present utility model.

[0014] Figure 2 It is an exploded view of a separated square lithium battery of the present utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the first conductive head of a separated square lithium battery of the present utility model.

[0016] Figure 4 It is a sectional view of the housing of a separated square lithium battery of the present utility model.

[0017] Figure 5 It is a schematic diagram of the structure of the positive wire and the negative wire of a separated square lithium battery of the present utility model.

[0018] Figure 6 It is a bottom view of the top cover of a separated square lithium battery of the present utility model.

[0019] (1. Housing; 2. Top cover; 3. Positive wire; 4. Negative wire; 5. Single lithium battery; 6. First conductive head; 7. Partition plate; 8. First insulating seat; 9. Conductive terminal; 10. Limiting groove; 11. Second insulating seat; 12. Conductive spring; 13. Through hole; 14. Conductive terminal seat; 15. Insulating rubber ring; 16. Bump; 17. Second conductive head) Detailed implementation manners

[0020] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0021] Referring to Figures 1 to 6 , the present utility model provides a separable square lithium battery, including a housing 1 and a single lithium battery 5 arranged inside the housing 1. Partition plates 7 for separating the single lithium batteries 5 are symmetrically and fixedly connected inside the housing 1, and the partition plates 7 are in a T shape. Specifically, the single lithium batteries 5 are separated by the partition plates 7 so that the single lithium batteries 5 can be independent of each other, and at the same time, there are certain gaps between adjacent single lithium batteries 5 and between the single lithium batteries 5 and the inner wall of the housing 1, which is convenient for heat dissipation.

[0022] Furthermore, conductive heads one 6 serving as electrodes are symmetrically arranged on both sides of the single lithium battery 5. The conductive heads one 6 include conductive terminals 9 connected to the single lithium battery 5, and an insulating seat one 8 is wrapped outside the conductive terminals 9. The two conductive heads one 6 serve as the positive electrode and the negative electrode respectively, and the outer surface of the single lithium battery 5 is engraved with the symbols of “+” and “-” for distinguishing the positive and negative electrodes.

[0023] Furthermore, a negative wire 4 and a positive wire 3 are embedded inside the housing 1. The negative wire 4 and the positive wire 3 are respectively arranged on both sides of the single lithium battery 5, and conductive heads two 17 corresponding to the conductive heads one 6 are equidistantly connected on the negative wire 4 and the positive wire 3. Through holes 13 for the conductive heads two 17 to penetrate are opened inside the housing 1. The conductive heads two 17 include conductive springs 12, conductive end seats 14 fixedly connected to one end of the conductive springs 12, and insulating seats two 11 wrapped outside the conductive end seats 14. The conductive springs 12 are fixedly connected to the positive wire 3 and the negative wire 4, and the end faces of the insulating seats one 8 and the insulating seats two 11 are inclined planes that cooperate with each other. Specifically, when the single lithium battery 5 is placed downward inside the housing 1, the conductive heads one 6 come into contact with the conductive heads two 17. Through the mutual extrusion of the inclined planes, the conductive terminals 9 can be clamped into the conductive end seats 14 to achieve conduction. Through the arrangement of the conductive springs 12, the conductive heads one 6 and the conductive heads two 17 can always be closely attached together to ensure the stability of the connection. An insulating layer is wrapped outside the conductive springs 12.

[0024] Furthermore, limiting grooves 10 are opened inside the housing 1, and the positions of the limiting grooves 10 correspond to the conductive heads two 17. The limiting grooves 10 provide space for the entry of the conductive heads one 6 and also have a certain guiding effect.

[0025] Furthermore, a top cover 2 is connected to the top of the housing 1 by bolts. The top cover 2 corresponds to each single lithium battery 5 one by one. An insulating rubber ring 15 is arranged inside the top cover 2, and bumps 16 that cooperate with the limiting grooves 10 are arranged on both sides of the insulating rubber ring 15. The insulating rubber ring 15 and the bumps 16 can fill the gap between the single lithium battery 5 and the housing 1, ensuring the stability of the single lithium battery 5 in the housing 1. By providing an independent top cover 2 corresponding to each single lithium battery 5 one by one, when a certain single lithium battery 5 is damaged, only the top cover 2 at the corresponding position needs to be disassembled and the single lithium battery 5 at the corresponding position can be taken out.

[0026] Working principle: The single lithium battery 5 is placed downward inside the housing 1. The first conductive head 6 contacts the second conductive head 17. Through the mutual extrusion of the inclined surfaces, the conductive terminal 9 can be snapped into the conductive end seat 14 to achieve conduction. Through the movable connection between the first conductive head 6 and the second conductive head 17, when a certain single lithium battery 5 is damaged later, only the top cover 2 at the corresponding position needs to be disassembled and the single lithium battery 5 at the corresponding position can be taken out, without affecting the overall operation of the battery.

[0027] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the gist of the present invention creation, they shall fall within the protection scope of the present invention.

Claims

1. A separate square lithium battery, comprising a housing and a single lithium battery arranged inside the housing, characterized in that: A partition for separating single lithium batteries is symmetrically fixed on the inner side of the shell, and conductive heads 1 are symmetrically arranged on both sides of the single lithium battery. A negative electrode line and a positive electrode line are embedded in the inner side of the shell, and the negative electrode line and the positive electrode line are respectively arranged on both sides of the single lithium battery, and conductive heads 2 corresponding to the conductive head 1 are equidistantly connected to the negative electrode line and the positive electrode line. A through hole for the conductive head 2 to pass through is opened on the inner side of the shell, and the conductive head 2 is movably connected to the conductive head 1. A top cover is connected to the top of the shell by bolts, and the top cover corresponds to the single lithium batteries one by one.

2. A separate square lithium battery according to claim 1, characterized in that: The conductive head 1 includes a conductive terminal connected to a single lithium battery, and the outer side of the conductive terminal is wrapped with an insulating seat 1.

3. A separate square lithium battery according to claim 2, characterized in that: The conductive head 2 includes a conductive spring, a conductive end seat fixedly connected to one end of the conductive spring, and an insulating seat 2 wrapped around the outside of the conductive end seat. The conductive spring is fixedly connected to the positive line and the negative line. The end faces of the insulating seat 1 and the insulating seat 2 are both mutually matching inclined surfaces.

4. A separate square lithium battery according to claim 1, characterized in that: A limiting groove is provided on the inner side of the shell, and the position of the limiting groove corresponds to the second conductive head.

5. A separate square lithium battery according to claim 4, characterized in that: An insulating rubber ring is arranged on the inner side of the top cover, and protrusions matching with the limiting grooves are arranged on both sides of the insulating rubber ring.

6. A separate square lithium battery according to claim 1, characterized in that: The partition is T-shaped.

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