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Brake feedback control circuit and method of electric vehicle

A technology of braking feedback and electric vehicles, which is applied in the direction of electric vehicles, electric braking systems, vehicle components, etc., can solve problems such as inability to brake, and achieve the effect of avoiding impact and improving braking safety performance

Active Publication Date: 2012-06-20
苏州海格电控股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing an improved brake feedback control circuit and scheme for an electric vehicle, which overcomes the disadvantage that the electric vehicle cannot brake when the power battery is sufficient, and improves the performance of the electric vehicle. Brake safety performance

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  • Brake feedback control circuit and method of electric vehicle

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Embodiment Construction

[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0017] The invention provides an improved braking feedback control circuit and scheme of an electric vehicle, which overcomes the disadvantage that the electric vehicle cannot brake when the power battery is sufficient, and improves the braking safety performance of the electric vehicle.

[0018] Such as figure 1 Shown is the brake feedback control circuit of the electric vehicle of the present invention, the control circuit includes a controller 1, a power battery 2, a motor 3 and a first DC contactor 4 and second DC contactor 8, a braking resistor 6 is arranged in parallel with the motor 3, and the braking resistor 6 controls the braking resist...

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Abstract

The invention discloses a brake feedback control circuit of an electric vehicle. The control circuit comprises a controller, a power battery, a motor, a first DC (direct current) contactor and a second DC contactor, wherein the first DC contactor and the second DC contactor are used for controlling the on / off of the circuit between the power battery and the motor; a brake resistor is connected in parallel with the motor; and the brake resistor controls the on / off of the circuit between the brake resistor and the motor through a first DC contactor and a fuse. Through the brake feedback control circuit and method of an electric vehicle disclosed by the invention, the shortcoming that the electric vehicle cannot be braked when the power battery is sufficient is overcome, thereby improving the safety performance in braking the electric vehicle and avoiding influence on the driver caused by different brake feelings.

Description

technical field [0001] The invention relates to an electronic control system of an electric vehicle, in particular to a brake feedback control circuit and method of the electric vehicle. Background technique [0002] Braking energy feedback is one of the key technologies for pure electric vehicles and hybrid vehicles to reduce fuel consumption. The current braking energy feedback control method simply superimposes the motor braking force and mechanical braking force, but the motor braking is limited by the battery capacity. limit. When the battery power is low, the battery can absorb the braking feedback energy, and the motor can brake, and the total braking force is the motor braking force plus the mechanical braking force; when the battery power is sufficient, the battery can no longer absorb the braking feedback energy. If the energy is low, the motor cannot perform braking, and the total braking force is only the mechanical braking force. Sufficient or insufficient bat...

Claims

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Application Information

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IPC IPC(8): B60L7/08
Inventor 陆中华
Owner 苏州海格电控股份有限公司
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