Delay-start pre-charging circuit for robot

A technology of delayed start and pre-charging circuit, applied in circuit devices, battery circuit devices, safety/protection circuits, etc., can solve problems such as battery pre-charging circuit failure, inability to pre-charge the post-driver, and inability to protect the DC contactor, etc. , to achieve the effect of reducing the starting current

Pending Publication Date: 2021-10-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the DC contactor is used as the main power switch, since the DC contactor needs to be closed, the pre-charging circuit inside the battery is used to drive the coil of the DC contactor, which makes it impossible to pre-ch

Method used

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  • Delay-start pre-charging circuit for robot

Examples

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Example Embodiment

[0015] Example: Reference figure 1 The shown pre-charging circuit for delayed start of a robot includes a robot battery input terminal J1, a power input terminal BATTRY_INPUT, a pre-charging resistor power-on switch MOS transistor Q1, a rear-stage circuit charging resistor R1, and a rear-stage load connection terminal connected in sequence. J2.

[0016] In this embodiment, pin 1 of the robot battery input terminal J1 is connected to the power input terminal BATTRY_INPUT, and pin 2 is grounded.

[0017] The precharge resistor power-on switch MOS tube Q1 is a P-channel MOS tube, and its model is IRF5210STRLPBF. A resistor R2 with a resistance value of 10KΩ is connected between the gate and the source of the pre-charge resistor power-on switch MOS tube Q1, and the model is MM1Z12V The diode D1, the resistor R2 is connected in parallel with the diode D1, and a resistor R5 with a resistance value of 30K is connected between the resistor R2 and the gate of the pre-charging resistor...

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Abstract

The invention discloses a delay-start pre-charging circuit for a robot. The delay-start pre-charging circuit comprises a robot battery input terminal J1, a power supply input end BATTRY_INPUT, a pre-charging resistance power-on switch MOS tube Q1 and a post-stage load connection terminal J2 which are connected in sequence, wherein the source electrode of a delay-start circuit power supply switch MOS tube Q2 is arranged between and connected with the robot battery input terminal J1 and the source electrode of the pre-charging resistance power-on switch MOS tube Q1; a complete-machine switch terminal J3 is arranged between and connected with the source electrode of the pre-charging resistance power switch MOS tube Q1 and the source electrode of a delay-start circuit power switch MOS tube Q2; the drain electrode of the delay-start circuit power switch MOS tube Q2 is connected with a delay-start circuit power supply U1; the delay-start circuit power supply U1 is connected with a time delay circuit; and the output end of the time delay circuit is sequentially connected with a current amplification circuit, a direct current contactor driving connection terminal J4 and a driving coil of a direct current contactor. According to the delay-start pre-charging circuit for the robot, the effects of protecting the direct-current contactor, reducing starting current and protecting a post-stage circuit are achieved.

Description

technical field [0001] The invention relates to the technical field of robot starting circuits, in particular to a delay starting precharging circuit for robots. Background technique [0002] Robots generally contain various sensors and drivers, as well as executive motors, and their main power switches generally use DC contactors. The robot power supply bus generally adopts a large-capacity electrolytic capacitor or a structure in which multiple electrolytic capacitors are connected in parallel. The capacity is large. If the relay directly connected in series with the capacitor is closed, the initial state of the capacitor is equivalent to a short circuit, which will cause the relay contact to instantly A large current flows, which may burn out the relay contacts or reduce the life of the relay. Therefore, it is necessary to use a pre-charging circuit to pre-charge the electrolytic capacitor. [0003] The pre-charging circuit in the prior art is set at the BMS output term...

Claims

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Application Information

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IPC IPC(8): H02J7/00H03K17/284
CPCH02J7/00304H02J7/0045H02J7/007H03K17/284Y02E60/10
Inventor 邹翼波蔡宝京
Owner SUZHOU UNIV
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