CN204391213U - A kind of lithium battery - Google Patents

Abstract

The utility model discloses a kind of lithium battery; comprise one group of lithium cells, administration module, charging module, microprocessor and protection module; described lithium cells is connected mutually; the lithium cells of series connection is controlled by administration module and connects charging module, and each lithium cells connects microprocessor and protection module respectively.The utility model is compared with conventional art; by built-in microprocessor; intelligentized method is adopted to provide balanced protection to battery; play the maximum performance of lithium ion battery; simultaneously; protection module, by the protection of the several important performances to discharge and recharge, temperature and short circuit, further increases useful life.

Description

a lithium battery

technical field

The utility model belongs to the field of battery electronics, in particular to a lithium battery.

Background technique

Due to the advantages of stable discharge voltage, wide operating temperature range, low self-discharge rate, long storage life, no memory effect, small size, light weight and no pollution, lithium batteries have gradually replaced lead-acid batteries and nickel-cadmium batteries. The mainstream of power batteries. However, lithium batteries also have many problems: on the one hand, lithium batteries have high requirements for charging and discharging. When overcharging occurs, the electrolyte will be decomposed, which will increase the temperature and pressure inside the battery; The material copper will melt to cause an internal short circuit and increase the temperature; when the external circuit is short circuited or the discharge current is too large, due to the characteristics of high internal resistance, the internal power consumption of the battery will increase, and the temperature will also rise, which may cause oxidation or decomposition of the electrolyte , resulting in shortened battery life; when the above conditions occur, the pressure and heat of the lithium-ion battery will increase greatly, and it is easy to generate sparks, burn or even explode. Therefore, lithium-ion batteries are equipped with protection circuits without exception. Furthermore, in order to reduce the loss of lithium-ion batteries caused by high current in power equipment, it is necessary to use multiple lithium battery cells in series to form a battery pack, which solves the problem of loss caused by high current, but brings the lithium battery combination The new problem: the inconsistency of the internal characteristics of each single-cell lithium battery will inevitably lead to inconsistent charging and discharging of each lithium battery. Therefore, it is necessary to solve the balance problem of each single-cell lithium battery in the battery pack during the charging and discharging process.

Contents of the invention

Purpose of the invention: The purpose of this utility model is to provide a lithium battery for the deficiencies of the prior art.

Technical solution: In order to achieve the purpose of the above invention, the utility model is specifically accomplished as follows: a lithium battery, including a group of lithium battery units, a management module, a charging module, a microprocessor and a protection module, and the lithium battery units are connected to each other In series, the lithium battery units connected in series are controlled by the management module and connected to the charging module, and each lithium battery unit is connected to the microprocessor and the protection module respectively.

Wherein, the protection module includes a charge and discharge balance protection unit, a temperature protection unit and a short circuit protection unit.

Beneficial effects: Compared with the traditional technology, the utility model provides balanced protection for the battery through the built-in microprocessor and adopts an intelligent method, and exerts the maximum performance of the lithium-ion battery. The protection of several important performances further improves the service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

A lithium battery as shown in Figure 1 includes a group of lithium battery units 1, a management module 2, a charging module 3, a microprocessor 4 and a protection module 5, the lithium battery units 1 are connected in series, and the lithium battery units connected in series 1 is controlled by the management module 2 and connected to the charging module 3, and each lithium battery unit 1 is respectively connected to the microprocessor 4 and the protection module 5; the protection module 5 includes a charge and discharge balance protection unit 51, a temperature protection unit 52 and Short circuit protection unit 53 .

Claims (2)

1. a lithium battery; comprise one group of lithium cells (1), administration module (2), charging module (3), microprocessor (4) and protection module (5); it is characterized in that; described lithium cells (1) is connected mutually; the lithium cells (1) of series connection is controlled by administration module (2) and connects charging module (3), and each lithium cells (1) connects microprocessor (4) and protection module (5) respectively.

2. lithium battery according to claim 1; it is characterized in that, described protection module (5) comprises charge and discharge provides balanced protection unit (51), temperature protection unit (52) and short-circuit protection unit (53).