CN213936471U

CN213936471U - A lithium battery protection board for preventing overcharge

Info

Publication number: CN213936471U
Application number: CN202023219565.9U
Authority: CN
Inventors: 黄欢欢
Original assignee: Shenzhen Zhuopuwei Electronic Technology Co ltd
Current assignee: Shenzhen Zhuopuwei Electronic Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-10
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a prevent lithium battery protection board of overcharge, including main part, overload protection device, fuse, protection IC, temperature controller and balanced circuit, be equipped with in the main part overload protection device, overload protection device one side is equipped with the fuse, fuse one side is equipped with MOS, MOS one side is equipped with protection IC, protection IC bottom is equipped with the temperature controller, temperature controller one side is equipped with balanced circuit. The utility model discloses the lithium battery protection board inboard that sets up is equipped with the visor, can play the effect of dustproof protection to the main part, when traditional lithium battery protection board does not connect charger and load, lithium battery group does not close power supply circuit, lead to its security insufficient, this device is equipped with overload protection device and fuse and protects the main part, when the current takes place unusually, the fuse can automatic fusing, play the guard action to the main part, the normal use of lithium cell has been guaranteed, the life of lithium cell has been prolonged.

Description

Lithium battery protection board capable of preventing overcharge

Technical Field

The utility model relates to a lithium battery protection technical field particularly, relates to a prevent lithium battery protection board of overcharge.

Background

With the development of mobile electronic devices, lithium batteries have become the primary power source for electronic devices. In order to ensure the safety of the lithium battery, a protection circuit board is arranged in the lithium battery. The circuit board is usually connected with the battery cell by spot welding through a nickel sheet and a tab of the battery cell. In the packaging process of the battery, the nickel sheet needs to be bent into an L shape, so the bending capability of the nickel sheet, that is, the number of times of bending can be borne, needs to have higher requirements, and the bending resistance of the L-shaped nickel sheet is related to various aspects, such as material, hardness, thickness, bending angle, and the like. Each of which can improve the level of bending resistance. However, due to the influence of factors such as structure and cost, it is not convenient to change or improve the conductive sheet from each angle, and with the development of society, the conductive sheet is more and more widely used in various fields, and the requirements for the conductive sheet are also increased, so that the conductive sheet not only has good conductivity, but also has other additional functions such as a protection function.

The existing lithium battery pack is generally protected by a hardware lithium battery protection board, the lithium battery protection board is used for carrying out charge and discharge protection on the series lithium battery pack, so that the lithium battery pack is protected from over-discharge, over-charge, over-current and output short circuit protection, the voltage difference between each single battery is ensured to be less than a set value when the lithium battery is fully charged, the uniform charge of each single battery of the battery pack is realized, however, the existing lithium battery protection board is in a real-time working state, when the lithium battery protection board is not connected with a charger and a load, the lithium battery pack is not powered off, the voltage output still exists, the safety is insufficient, even, safety accidents are caused, and the problem is solved by the lithium battery protection board capable of preventing over-charge.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent lithium battery protection shield of overcharge to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent lithium battery protection board of overcharge, includes main part, overload protection device, fuse, protection IC, temperature controller and balanced circuit, be equipped with in the main part overload protection device, overload protection device one side is equipped with the fuse, fuse one side is equipped with MOS, MOS one side is equipped with protection IC, protection IC bottom is equipped with the temperature controller, temperature controller one side is equipped with balanced circuit.

Furthermore, a protective cover is arranged at the upper end of the main body and buckled on the main body.

Furthermore, a heat dissipation copper sheet is arranged on the main body and welded on the main body.

Furthermore, a resistor is arranged on the main body and welded on the main body.

Furthermore, the fuse wire is in a glass tube shape and is made of nickel and nickel alloy.

Further, the cross-sectional area of the overload protection device corresponds to a set current.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a prevent lithium battery protection board that overcharges, the lithium battery protection board inboard that this device set up is equipped with the visor, can play the effect of dustproof protection to the main part, when traditional lithium battery protection board does not connect charger and load, lithium battery group does not close power supply circuit, it still has voltage output, lead to its security insufficient, cause the incident even, this device is equipped with overload protection device and fuse protects the main part, when the current takes place unusually, the fuse can automatic fusing, play the guard action to the main part, the normal use of lithium cell has been guaranteed, the life of lithium cell has been prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lithium battery protection plate for preventing overcharge according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a main body of a lithium battery protection plate for preventing overcharge according to an embodiment of the present invention.

Reference numerals:

1. a main body; 2. a protective cover; 3. a heat-dissipating copper bar; 4. an overload protection device; 5. fusing the wires; 6. MOS; 7. a resistance; 8. protecting the IC; 9. a temperature controller; 10. and (6) equalizing the lines.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

please refer to fig. 1-2, according to the embodiment of the present invention, a lithium battery protection plate for preventing overcharge includes a main body 1, an overload protection device 4, a fuse 5, a protection IC8, a temperature controller 9 and an equalizing circuit 10, the overload protection device 4 is disposed on the main body 1, the fuse 5 is disposed on one side of the overload protection device 4, the fuse 5 is disposed on one side of the fuse 6, the protection IC8 is disposed on one side of the MOS6, the temperature controller 9 is disposed at the bottom end of the protection IC8, and the equalizing circuit 10 is disposed on one side of the temperature controller 9.

Through the above technical scheme of the utility model, 1 upper end in main part is equipped with visor 2, visor 2 lock joint is in main part 1, be equipped with heat dissipation copper sheet 3 in main part 1, heat dissipation copper sheet 3 welds on main part 1, and heat dissipation copper sheet 3's effect plays radiating effect to main part 1 for protect main part 1, be equipped with resistance 7 in main part 1, resistance 7 welds on main part 1, fuse 5 is the glass tubulose, adopts the alloy of nickel and nickel, 4 cross-sectional areas of overload protection device are corresponding with the electric current size of settlement.

When specifically using, the utility model relates to a prevent lithium battery protection board that overcharges, the lithium battery protection board inboard that this device set up is equipped with visor 2, can play the effect of dustproof protection to main part 1, when traditional lithium battery protection board does not connect charger and load, lithium battery group does not close power supply circuit, it still has voltage output, lead to its security not enough, cause the incident even, this device is equipped with overload protection device 4 and fuse 5 and protects main part 1, when the current takes place unusually, fuse 5 can automatic fusing, play the guard action to main part 1, the normal use of lithium cell has been guaranteed, the life of lithium cell has been prolonged.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery protection board for preventing overcharging, characterized in that it comprises a main body (1), an overload protection device (4), a fuse (5), a protection IC (8), a thermostat (9) and a balancer In the circuit (10), the overload protection device (4) is provided on the main body (1), the fuse (5) is provided on one side of the overload protection device (4), and the fuse (5) One side is provided with a MOS (6), one side of the MOS (6) is provided with the protection IC (8), and the bottom end of the protection IC (8) is provided with the thermostat (9), so The equalizing circuit (10) is provided on one side of the temperature controller (9).

2 . The lithium battery protection board for preventing overcharging according to claim 1 , wherein the upper end of the main body ( 1 ) is provided with a protective cover ( 2 ), and the protective cover ( 2 ) is buckled to the main body. 3 . (1) on.

3. A lithium battery protection board for preventing overcharging according to claim 1, wherein the main body (1) is provided with a heat dissipation copper sheet (3), and the heat dissipation copper sheet (3) is welded on the on the main body (1).

4. A lithium battery protection board for preventing overcharge according to claim 1, wherein the main body (1) is provided with a resistor (7), and the resistor (7) is welded to the main body (1) superior.

5 . The lithium battery protection board for preventing overcharging according to claim 1 , wherein the fuse wire ( 5 ) is in the shape of a glass tube and adopts nickel and a nickel alloy. 6 .

6 . The lithium battery protection board for preventing overcharge according to claim 1 , wherein the cross-sectional area of the overload protection device ( 4 ) corresponds to the set current. 7 .