A supercapacitor discharge circuit and new energy vehicle

Abstract

The invention relates to a super-capacitor discharge circuit, and the circuit comprises a voltage comparison unit, a discharge control unit, a discharge resistance unit, a main switch, a positive interface, and a negative interface. The discharge resistance unit comprises a first double-pole double-throw switch, a second double-pole double-throw switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor. The first and third resistors are connected in parallel between a first node and a second node. The second resistor and a fourth resistor are connected in parallel between the second node and a third node. The fifth and sixth resistors are connected in series between the third node and a first stationary contact of the upper end of the second double-pole double-throw switch. The second node is connected with a second moving contact of the lower end of the first double-pole double-throw switch and a second moving contact of the upper end of the second double-pole-double throw switch. The invention also relates to a new energy automobile comprising the super-capacitor discharge circuit.

Description

technical field [0001] The invention relates to a discharge circuit of a supercapacitor and a new energy vehicle containing the discharge circuit. Background technique [0002] Supercapacitors have the advantages of fast charging and discharging speed, high charging and discharging times, and long life. They are power energy storage devices with high energy conversion efficiency. In the application of new energy vehicles, the supercapacitors are combined in series and parallel to improve the voltage platform and energy storage capacity, and are used for motor controllers to drive motors. [0003] When a new energy vehicle breaks down and needs to overhaul and maintain the supercapacitor, because the supercapacitor bank has a high-voltage platform, the maintenance personnel will operate with electricity during the overhaul and maintenance process, and personal safety cannot be guaranteed. Therefore, it is necessary to discharge the supercapacitor to Safe voltage can carry ou...

AI Technical Summary

Problems solved by technology

At present, the existing supercapacitor discharge equipment for new energy vehicles has complex structures, large volumes, expensive prices, slow discharge speed and low safety.

as attached figure 1 , which is a supercapacitor discharge circuit that uses a single resistor to consume energy in the prior art. The discharge speed of this circuit is slow and the safety is not high

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