A Modular Lithium Battery DC Power Supply System
A technology of DC power supply system and battery management system, which is applied in the direction of battery circuit device, secondary battery, battery parallel conversion, etc., to achieve the effect of increasing the use capacity, wide applicable temperature range, and enhancing the use field
Active Publication Date: 2019-06-11
BEIJING FANGZHI TECH CO LTD
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Problems solved by technology
However, due to technical problems in safety, charge and discharge control, etc. during the use of lithium batteries, the power system has not yet adopted lithium batteries as backup power on a large scale.
Method used
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[0019] In order to clearly illustrate the technical characteristics of this solution, the following describes the present invention in detail through specific implementations and in conjunction with the accompanying drawings.
[0020] Such as Figure 1-2 As shown, a modular lithium battery DC power supply system includes several lithium battery packs. The lithium battery pack 14 includes an explosion-proof box. A charging module 1 is provided in the explosion-proof box. One end of the charging module 1 is connected to a lithium battery pack through a wire. 2 is connected to the input end, the output end of the lithium battery pack 2 is connected to the DC output end 3 through a wire passing through the explosion-proof box shell, the lithium battery pack 2 is connected to the battery management system 4 arranged in the explosion-proof box, the battery management system 4 They are respectively connected to the fire extinguishing device 5, the smoke sensor 6, the heater 7, the fan 8...
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The invention relates to a modular lithium battery DC power system, the system comprises a plurality of lithium battery packs, one of the lithium battery packs comprises an explosion-proof tank, a charging module is arrange in the explosion-proof tank, one end of the charging module is connected with an input end of one lithium battery pack through a wire, the lithium battery group is connected with a battery management system in a explosion-proof case, and the battery management system is separately connected with a fire extinguishing device, a smoke sensor, a heater, a fan, a discharge control unit and a equalization module in the explosion-proof case through wires in sequence; the equalization module is connected with the lithium battery pack through a wire, and the discharge control unit is connected with a DC output end through a wire. According to the invention, the service life is long, the applicable temperature range is wide, the control mode is optimized, the capacity is hardly reduced in maintenance process, the battery packs can perform on-line autonomous equalization, the battery packs can perform off-line autonomous maintenance, the battery packs support hot swap, and the using process is nontoxic and non-polluting.
Description
Technical field: [0001] The invention relates to a modularized lithium battery DC power supply system. Background technique: [0002] The DC power supply system of power plants and stations in the power industry shoulders the responsibility of providing safe, stable and reliable power protection for relay protection, automation equipment, communication equipment, accident lighting, etc. in the power system, so as to ensure the safe and stable operation of the DC power system Has a very important meaning. For a long time, the DC power supply system of power system plant and station has always used lead-acid battery pack as backup battery. However, this type of power system has many shortcomings. In order to ensure that the battery has sufficient power at all times, the batteries used in the DC power supply of the existing plants need to face the situation of long-term floating charge. This long-term floating charge will cause the lead-acid battery to passivate and reduce the bat...
Claims
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IPC IPC(8): H02J7/00H01M10/42
CPCH01M10/4207H02J7/0014H02J7/0024Y02E60/10
Inventor 姜志鹏沈照建姜志华张恒
Owner BEIJING FANGZHI TECH CO LTD