Overcurrent protection circuit and control method therefor, electronic equipment and storage medium

An overcurrent protection circuit and control method technology, applied in battery overcurrent protection, safety/protection circuit, emergency protection circuit devices, etc., can solve the problems of complex protection circuit control, high cost, damage to the AC load of the charger, etc. Fast and stable overcurrent protection, low cost, simple control effect

Inactive Publication Date: 2018-11-20
苏州舜唐新能源电控设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when charging the power battery, the current flowing into the power battery is too large; when the charger performs current inversion, the current flowing out of the power battery is too large, resulting in damage to the charger or the AC load; the existing protection circuit is complicated to control , the cost is high, and the over-current protection cannot be effectively, quickly and stably

Method used

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  • Overcurrent protection circuit and control method therefor, electronic equipment and storage medium
  • Overcurrent protection circuit and control method therefor, electronic equipment and storage medium
  • Overcurrent protection circuit and control method therefor, electronic equipment and storage medium

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] overcurrent protection circuits such as figure 1 As shown, it includes a sampling circuit, a comparison circuit, a logic transformation circuit, and a trigger circuit. The driving circuit performs sampling, obtains the current sampling signal, outputs the current sampling signal to the comparison circuit, the comparison circuit receives the current sampling signal and compares it, generates a comparison signal, outputs the comparison signal to the logic conversion circuit, and the logic conversion circuit performs logic conversion on the comparison signal convert, generate an intermediate ...

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Abstract

The invention provides an overcurrent protection circuit, which comprises a sampling circuit, a comparison circuit, a logic conversion circuit and a trigger circuit, wherein the sampling circuit is connected with a drive circuit in series and connected with the comparison circuit; the comparison circuit is connected with the logic conversion circuit; the logic conversion circuit is connected withthe trigger circuit; the sampling circuit is used for sampling the drive circuit to obtain a current sampling signal and outputting the current sampling signal to the comparison circuit; the comparison circuit is used for receiving the current sampling signal, comparing the current sampling signal to generate a comparison signal and outputting the comparison signal to the logic conversion circuit;the logic conversion circuit is used for carrying out logic conversion on the comparison signal to generate an intermediate logic signal and outputting the intermediate logic signal to the trigger circuit; and the trigger circuit generates an overcurrent protection signal through the intermediate logic signal. The invention further relates to a control method for the overcurrent protection circuit, electronic equipment and a storage medium. Overcurrent protection can be effectively, quickly and stably carried out, the control is simple and the cost is low.

Description

technical field [0001] The invention relates to the technical field of protection circuits, in particular to an overcurrent protection circuit, a control method thereof, electronic equipment, and a storage medium. Background technique [0002] The overcurrent protection circuit is used to protect the target circuit when the protected target circuit has an overcurrent phenomenon. The electric vehicle on-board charger is a device that can convert energy between the power grid and the power battery of the electric vehicle. The energy of the internal high-voltage power battery is converted into 220V / 50Hz AC to drive the AC load or charge the power battery of other electric vehicles. However, when charging the power battery, the current flowing into the power battery is too large; when the charger performs current inversion, the current flowing out of the power battery is too large, resulting in damage to the charger or the AC load; the existing protection circuit is complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08H02H1/00H02J7/00
CPCH02H1/0007H02H3/08H02J7/00304H02J7/0031
Inventor 陈滨方翰珅方波
Owner 苏州舜唐新能源电控设备有限公司
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