Portable safe charging system and method suitable for lithium battery in low-temperature environment
A low-temperature battery and charging method technology, which is applied in the field of lithium-ion batteries, can solve problems such as the lack of portability of the power grid and the lack of versatility of lithium battery heating, and achieve the effects of ensuring safety and simplifying the system structure
Active Publication Date: 2021-07-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0003] In view of this, the purpose of the present invention is to provide a lithium battery portable safe charging system and method suitable for low temperature environments, aiming to solve the problem of lack of versatility in the prior art that requires external equipment to heat the lithium battery, and Solve the problem that the grid power supply is not portable in the prior art
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[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0032] The system of the present invention first combines the power supply, an external low-temperature power-depleted battery and a portable low-temperature charging device; when using an all-weather battery as a power supply, the portable low-temperature charging device outputs current to its own heating element to generate heat and recover The temperature of the all-climate battery itself. When using other types of low-temperature resistant batteries or power frequency AC as the power source, there is no...
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The invention relates to a portable system and method for safely charging a low-temperature battery. The system comprises a low-temperature power supply source, a power supply source selection switching circuit, a power supply adjusting circuit, a charging control module and an inversion module. Firstly, the power supply source, a low-temperature lithium battery and a portable low-temperature charging device are combined; then the power supply source supplies power, the portable low-temperature charging equipment controls to output alternating current to heat the lithium battery, and the temperature is recovered; and finally, the portable low-temperature charging equipment controls to output direct current to charge the lithium battery with the recovered temperature. The system can adapt to power supply of various forms of power supply sources, various heating conditions and charging requirements can be set manually, and safe charging of the low-temperature lithium battery without preassembling heating equipment is achieved.
Description
technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a portable and safe charging method for an external low-temperature exhausted battery. Background technique [0002] With the widespread application of lithium-ion batteries, various forms of charging have emerged one after another. Because low temperature has a great impact on the performance and safety of lithium-ion batteries, especially when charging lithium-ion batteries directly below 0°C, it is more likely to cause internal lithium plating, which will further affect the service life and reduce safety. Carrying out safe charging is an important technical problem to be solved in this field at present. The existing solution usually adopts the method of heating first and then charging, that is, the lithium battery is heated by an external device by using an oil bath and a PTC heating resistor, and then charged by a charger. However, with the development of mobi...
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Login to View More IPC IPC(8): H02J7/00H02J7/02H01M10/44H01M10/615
CPCH02J7/0029H02J7/00047H02J7/0013H02J7/02H01M10/443H01M10/615Y02E60/10
Inventor 李军求杨子传孙逢春朱超峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY