Motor control device and motor starting control method
A technology for motor control and control circuits, applied in circuit devices, battery circuit devices, motor generators/starters, etc., can solve problems such as excessive current
Pending Publication Date: 2021-03-12
GREEN ENERGY BATTERY CO LTD
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- Abstract
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- Claims
- Application Information
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a pre-charging circuit protection method, which aims to solve the potential safety hazard caused by excessive current in the circuit and improve the safety of the circuit
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0037] In the present in...
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Abstract
The invention discloses a motor control device and a motor starting control method, the motor control device comprises a power supply module, a pre-charging capacitor, a pre-charging control circuit and a sampling circuit, the pre-charging control circuit is used for controlling a first switching tube to be conducted when receiving a motor starting signal so that the power supply module prechargesthe pre-charging capacitor, the sampling circuit is used for collecting a charging voltage value of the pre-charging capacitor and outputting the charging voltage value to the pre-charging control circuit, and the pre-charging control circuit is used for comparing the received charging voltage value with a preset voltage value, and when the charging voltage value is smaller than or equal to the preset voltage value, controlling the first switching tube to be disconnected, so that the power supply module stops charging the pre-charging capacitor The invention aims to solve the problem of potential safety hazards caused by overlarge current in a circuit and improve the safety of the circuit.
Description
technical field [0001] The invention relates to the technical field of switch protection, in particular to a motor control device and a motor startup control method. Background technique [0002] There are many electric vehicles, electric bicycles, electric motorcycles, electric special vehicles, etc. on the market, all of which use motors, and there is a capacitor with a large value inside. Since the capacitor is used as an energy storage element, if the capacitor is not fully charged at the moment the circuit is closed, the charging current of the capacitor in the circuit will be very large, which will cause an overcurrent phenomenon. In order to protect the motor from damage, the capacitor must be charged before the motor starts Charging is carried out, that is, pre-charging. [0003] A common technical method is to use a relay for precharging, but the size of the relay is relatively large and will occupy a large space, and the current small and micro electric vehicles h...
Claims
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Login to View More IPC IPC(8): H02P1/16H02J7/34
CPCH02P1/16H02J7/345H02J2207/50
Inventor 徐德飞
Owner GREEN ENERGY BATTERY CO LTD