High-precision formation power supply circuit
A power circuit, high-precision technology, applied in the direction of battery disconnection circuit, battery circuit device, circuit device, etc., can solve the problems of general accuracy, excess resources, and additional cost, and achieve precise control of charging voltage, flexible debugging, and volume small effect
Pending Publication Date: 2021-10-22
SUZHOU HARMONTRONICS AUTOMATION TECH CO LTD
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Problems solved by technology
[0002] In the field of battery production, the formation process is a very important process, and the quality of the formation process mainly depends on the accuracy of the formation power supply. At present, there are many formation power supplies on the market with a maximum charging current of more than 10A and an average accuracy. Products that require a 3A charging current environment undoubtedly have a bit of excess resources and add a lot of additional costs
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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 protection scope of the present invention.
[0020] See figure 1 As shown, the high-precision formation power supply circuit of the present invention includes a charging chip (TPS54821), a discharging chip (TPS611781), the switch terminal (SW) of the charging chip (TPS54821) and the discharging chip (TPS611781) and the battery (LV) Connection, the input terminal (VIN) of the charging chip (TPS54821), the output terminal (VOUT) of the discharging chip (TPS611781) are connected to the high voltage power su...
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The invention provides a high-precision formation power supply circuit, which comprises a charging chip and a discharging chip; the switching ends of the charging chip and the discharging chip are connected with a battery, wherein the input end of the charging chip and the output end of the discharging chip are connected with a high-voltage power supply, and the enabling ends of the charging chip and the discharging chip are connected with a driving end. The comparison end of the discharge chip is connected with the current setting end through the first operational amplifier; the comparison end of the charging chip is connected with the current setting end through a second operational amplifier and is also connected with the voltage setting end through a third operational amplifier; the current setting end can adjust the current for charging and discharging the battery, and the voltage setting end can set the upper limit of the battery voltage. According to the high-precision formation power supply circuit, the size of the power circuit is small, the charging current and the charging voltage are accurately controlled, the precision after calibration can be within 0.05% and is higher than 0.1% of the current industry standard through large and small range switching control.The high-precision formation power supply circuit is designed based on a pure hardware circuit, and debugging is more flexible.
Description
technical field [0001] The invention relates to the technical field of circuit design, in particular to a high-precision formation power circuit. Background technique [0002] In the field of battery production, the formation process is a very important process, and the quality of the formation process mainly depends on the accuracy of the formation power supply. At present, there are many formation power supplies on the market with a maximum charging current of more than 10A and an average accuracy. Products that require a 3A charging current environment undoubtedly have a bit of excess resources and add a lot of additional costs. Contents of the invention [0003] In view of the deficiencies of the current prior art, the purpose of the present invention is to provide a high-precision formation power circuit. [0004] In order to achieve the above object, embodiments of the present invention adopt the following technical solutions: [0005] A high-precision forming powe...
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IPC IPC(8): H02J7/00
CPCH02J7/0069H02J7/0068H02J7/007H02J7/00304H02J7/00308H02J7/0031
Inventor 郁俊清
Owner SUZHOU HARMONTRONICS AUTOMATION TECH CO LTD