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An electric vehicle motor driver with a built-in high-current relay

A technology of motor drivers and relays, applied in motor control, electrical components, control systems, etc., can solve problems such as uneven distribution of large currents, interference, etc., and achieve the effects of facilitating contact heat dissipation, improving reliability, and avoiding overload problems

Active Publication Date: 2018-03-09
四川大能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an electric vehicle motor driver with a built-in high-current relay. On the basis of facilitating system integration, it can eliminate the uneven distribution of large current and the interference of high current to the control layer, and improve Motor Driver Reliability

Method used

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  • An electric vehicle motor driver with a built-in high-current relay
  • An electric vehicle motor driver with a built-in high-current relay
  • An electric vehicle motor driver with a built-in high-current relay

Examples

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Embodiment 1

[0030] In this example, if Figure 5 As shown, the present invention has a built-in high current relay electric car The motor driver includes a control layer 3 and a power layer 4 . On this basis, an external power supply access terminal 1 is added, and the external power supply terminal 1 is connected to the vehicle power supply (not shown) through a power supply line. In the present invention, the external power supply terminal 1 is also Install the first contact 9, specifically as Figure 5 As shown in (b), the power inlet line is connected to the upper part of the external power supply terminal 1, and the first contact 9 is installed on the lower part of the power supply external terminal 1, and the first contact 9 is a metal sheet with good electrical conductivity , the bottom end of the external access terminal 1 of the power supply is fixed on the control layer 3, and is not connected to the circuit board of the control layer, that is, it is insulated. An insulating...

Embodiment 2

[0042] In this example, if Figure 6 As shown, will Figure 5 The relay actuator 5 is replaced by a miniature linear motor 10, and the contact copper plate, that is, the relay metal plate 6, is driven back and forth by the linear motor 10 to realize the opening and closing of the relay.

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Abstract

The invention discloses an electric vehicle motor driver provided with a built-in large current relay. By dividing a power connection terminal into a power external connection terminal and a power inner connection terminal and mounting a first contact and a second contact respectively on the parts, above a control layer, of the power external connection terminal and the power inner connection terminal, a built-in large current relay is formed together with a relay executor mounted in the control layer and a relay metal board mounted on the relay executor. In this way, by mounting the relay contacts on wiring terminals of the motor driver directly, the whole large current circuit does not go through the control layer, so that interference on the control layer by large current is avoided and reliability of the motor driver is enhanced. At the same time, since the contacts are mounted on the wiring terminal, the contact area of the contacts and the relay metal board can be enlarged, so that large current switching on and off is realized. Besides, since the large current flow path is shortened, heat produced by the contacts can be dissipated through the wiring terminals, so that contact heat dissipation is facilitated.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle motor drivers, and more specifically relates to an electric vehicle motor driver with a built-in high-current relay. Background technique [0002] Electric vehicles use vehicle-mounted power supplies as power, drive wheels with motors, do not burn gasoline, do not produce exhaust, and are widely used all over the world. [0003] The motor that drives the electric vehicle is equipped with a motor driver (or called a motor controller), which is used to input the electric energy of the on-board battery into the motor, and the motor then converts the electric energy into the driving force of the electric vehicle. The motor driver controls the motor acceleration, deceleration, braking and other actions by controlling the drive current. Electric vehicle motor power ranges from thousands of watts to hundreds of kilowatts, so the driving current of the motor can reach thousands of amperes. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P29/00
CPCH02P29/00
Inventor 陈汝佳刁双林
Owner 四川大能科技有限公司