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Double-gun power distribution direct current charger protective device

A protection device and charger technology, which is applied in the direction of circuit devices, battery circuit devices, collectors, etc., can solve the problems of parallel connection of batteries, high power consumption of diodes, damage to cars or equipment, etc., to prevent mutual discharge, circuit elements The effect of less components and cost reduction

Active Publication Date: 2015-10-21
SHENZHEN CLOU ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the simultaneous charging of two vehicles by the DC power distribution double-gun charger, when the two contactors of power distribution malfunction, the batteries of the two vehicles will be connected in parallel, causing the battery with high voltage to discharge to the battery with low voltage. Very large and can easily cause damage to the car or equipment
In order to prevent such accidents, two high-power diodes are currently connected in series on the two charging circuits. However, due to the large power consumption of the series connected diodes, the heat is serious, the cost is high, and the breakdown cannot be detected in time, which is easy to cause damage. The batteries of the two cars are connected in parallel, which poses a major safety hazard

Method used

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  • Double-gun power distribution direct current charger protective device

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specific Embodiment

[0024] The second control normally open contact JK2 and the third control normally open contact JK3 are two contacts that control figure 2 The third relay coil KM3, the fourth relay coil KM4, the fifth relay coil KM5 and the sixth relay coil KM6, so as to realize the double gun output, such as figure 2 As shown, the third relay auxiliary normally open contact AUX3 and the fourth relay auxiliary normally open contact AUX4 drive the first intermediate relay coil KA1, the fifth relay auxiliary normally open contact AUX5 and the sixth relay auxiliary normally open contact Point AUX6 drives the second intermediate relay coil KA2, while the first intermediate relay normally closed contact KA1NC and the second intermediate relay normally closed contact KA2NC are connected in parallel and then connected in series figure 2 In the control loop of the first relay coil KM1 and the second relay coil KM2, when the two charging guns output at the same time (that is, two cars are charged a...

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Abstract

The invention discloses a double-gun power distribution direct current charger protective device, including a first rectification module, a second rectification module, a first charging gun, a second charging gun, a double charging power distribution loop and a control circuit which is used for controlling the double charging power distribution loop. The control circuit is connected between a power end and the ground. An output end of the first rectification module is connected with a first input end of the double charging power distribution loop. An output end of the second rectification module is connected with a second input end of the double charging power distribution loop. The invention uses relay contacts in the double charging power distribution loop and the control circuit for interlocking, so that a contactor is prevented from generating maloperation, and a phenomenon of mutual discharging between batteries is effectively prevented. According to the invention, the structure is simple, the circuit components are a few, the reliability is high, the cost can be effectively reduced, and large scale production and application is feasible. The invention can be widely applied to the automobile charging field.

Description

technical field [0001] The invention relates to a charging protection device, in particular to a dual-gun power distribution DC charger protection device. Background technique [0002] During the simultaneous charging of two vehicles by the DC power distribution double-gun charger, when the two contactors of power distribution malfunction, the batteries of the two vehicles will be connected in parallel, causing the battery with high voltage to discharge to the battery with low voltage. Large and can easily cause damage to the car or equipment. In order to prevent such accidents, two high-power diodes are currently connected in series on the two charging circuits. However, due to the large power consumption of the series connected diodes, the heat is serious, the cost is high, and the breakdown cannot be detected in time, which is easy to cause damage. The batteries of the two cars are connected in parallel, which poses a major safety hazard. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): H02J7/00G05F1/66
Inventor 赵正权
Owner SHENZHEN CLOU ELECTRONICS
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