Motor control circuit, charging and discharging method, heating method and vehicle
A technology of motor control and charging method, which is applied in the fields of charging and discharging methods, heating methods, vehicles, and motor control circuits, which can solve the problems of increasing device volume and cost, and achieve the effects of high heating efficiency, cost reduction, and increased temperature
Active Publication Date: 2022-01-07
BYD CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a motor control circuit, a charging and discharging method, a heating method and a vehicle, so as to solve the problem in the prior art that a booster circuit needs to be added and the power battery needs to be heated when charging the power battery using a boost charging method. The need to increase the PTC heater leads to the problem of increasing the volume and cost of the entire device
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0039] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0040] Embodiment 1 of the present invention provides a motor control circuit, such as figure 1 and figure 2 As shown, the motor control circuit includes a first switch module 102, a three-phase inverter 103, a three-phase AC motor 104, an energy storage module 107, a second switch module 105 and a control module 108, and the motor control circuit passes through the first switch module 102 connected to the power supply module 101 or the power consumption module 120, the...
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The invention proposes a motor control circuit, a charging and discharging method, a heating method and a vehicle. The motor control circuit includes a first switch module, a three-phase inverter, a three-phase AC motor, an energy storage module, a second switch module and a control module. , the first switch module is used to connect the power supply module or the power consumption module, the second switch module is connected to the power battery, the three-phase inverter is connected between the first switch module and the second switch module, the three-phase inverter, the three-phase The AC motor and the energy storage module are connected in sequence, and the energy storage module is also connected to the power supply module or power consumption module. The technical solution of the present invention enables the power supply module to charge the power battery, and at the same time, the power battery can be discharged for the power module, and power can be taken from the power supply module or the power battery through the three-phase coil and three-phase inverter inside the three-phase AC motor. The internal heating device provides a heat source, which can increase the temperature of the parts to be heated, and the heating efficiency is high, and the temperature of the parts to be heated rises quickly.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a motor control circuit, a charging and discharging method, a heating method and a vehicle. Background technique [0002] With the development and rapid popularization of electric vehicles, the charging technology of electric vehicle power batteries has become more and more important. The charging technology needs to meet the needs of different users. The current boost charging circuit is generally between the charging pile and the power battery. A DC / DC bridge circuit with bidirectional buck-boost is added to the positive and negative busbars. Low-temperature battery heating generally uses PTC heaters or electric heating wire heaters to heat the coolant in the battery cooling circuit at low temperatures, and the coolant is used to heat the battery. The battery cells are heated to a predetermined temperature. There are also other solutions that use the engine controlle...
Claims
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IPC IPC(8): B60K1/00B60L50/60H02P27/06
CPCB60K1/00H02P27/06B60K2001/008B60L50/60Y02T10/70Y02T10/64
Inventor 廉玉波凌和平宁荣华潘华谢飞跃牟利
Owner BYD CO LTD