High-side switch, anti-reversion and programmable pre-charging three-in-one control circuit for vehicle-mounted controller
A vehicle-mounted controller and control circuit technology, which is applied in the direction of circuit devices, battery circuit devices, emergency protection circuit devices, etc., can solve problems such as not meeting the safety power supply requirements of vehicles, and achieve equipment space saving, cost advantages, and failure rate reduction Effect
Pending Publication Date: 2021-05-25
SHENZHEN BOYONG TECH
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Problems solved by technology
[0006] Based on this, the present invention provides a high-side switch, anti-reverse and programmable pre-charge three-in-one control circuit for a vehicle-mounted controller, to solve the problem that the power supply circuit of the existing controller only has a pre-charge circuit or a high-side anti-reverse, Technical problems that do not meet the needs of vehicle safety power supply
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the preferred embodiment are only for convenience of description, and are not used to limit the scope of the present invention. The scope of implementation and the change or adjustment of its relative relationship shall also be regarded as the scope of implementation of the present invention without substantive changes in technical content.
[0026] Such as figure 1 and figure 2 As shown, the high-side switch, anti-reverse and programmable pre-charge three-in-one control circuit for the on-board controller includes the on-board battery, high-side anti-reverse circuit, programmable pre-charge control circuit and control circuit.
[0027] The high-side defense circuit includes power inductor L1, switch tubes Q1 and Q2, one end of power inductor L1 is connected to the p...
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The utility model relates to a high-side switch, anti-reverse-charging and programmable pre-charging three-in-one control circuit for a vehicle-mounted controller. The control circuit comprises a vehicle-mounted storage battery, a high-side anti-reverse-charging circuit, a programmable pre-charging control circuit and a control circuit; and the vehicle-mounted storage battery supplies power to a power circuit of the vehicle-mounted controller through the high-side anti-reverse-charging circuit, and the control circuit performs on-off control on the high-edge anti-reverse circuit through the programmable pre-charging control circuit. The beneficial effects of the invention lie in that the switching tubes Q1 and Q2 in the high-side anti-reverse circuit are turned on and off under the control of the control circuit, so that the high-side anti-reverse circuit has a high-side power switching function; when the polarity of the vehicle-mounted storage battery is reversed, the switching tubes Q1 and Q2 are automatically closed, so that the anti-reverse function of the power circuit is realized; and a switch of the high-edge anti-reverse circuit is controlled by a control signal RL of the control circuit, and the duty ratio of the control signal RL can be adjusted between 1% and 100% according to different charging speed requirements, so that the actual charging requirements are met, and electrical elements and vehicle-mounted electric equipment are better protected.
Description
technical field [0001] The invention relates to the technical field of vehicle-mounted power supply, in particular to a three-in-one control circuit of a high-side switch, anti-reverse and programmable pre-charge for a vehicle-mounted controller. Background technique [0002] The controller of the car is powered by the on-board battery. After the car is ignited, the on-board battery will charge the large-capacity energy storage capacitor on the input side of the power circuit in the on-board controller. If the pre-charging circuit is not used, the instantaneous charging current may maintain several times the rated current within hundreds of milliseconds, and the huge charging current may cause battery and fuse failure. In order to prevent wrong connections, anti-reverse connection protection circuits are used in the industry. Usually, the anti-reverse connection protection circuit for DC power input in high-voltage and low-current circuits uses the unidirectional conductivit...
Claims
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IPC IPC(8): H02H7/18H02H11/00H02J7/00H02J7/34
CPCH02H7/18H02H11/002H02J7/0071H02J7/345H02J7/342
Inventor 项春亮石文光朱子宇陈俊光
Owner SHENZHEN BOYONG TECH