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Charging and discharging system, vehicle and alternating-current and direct-current power supply selection circuit

A technology of AC and DC power supply and charging and discharging power supply, which is applied in the field of vehicles and can solve problems such as limited charging power

Pending Publication Date: 2022-01-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The AC charging method is to connect the mains power to the vehicle charger, and convert the AC power into the DC power required by the battery pack to charge the battery pack through the vehicle charger. The charging power is largely limited by the power of the vehicle charger. There are more and more DC charging equipment in public charging facilities, and the charging equipment in expressway service areas are mainly DC charging. Speed, by adopting the new DC charging method on the dual-mode car, but the new DC charging method needs to be compatible with the AC charging method of the dual-mode car to a certain extent

Method used

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  • Charging and discharging system, vehicle and alternating-current and direct-current power supply selection circuit
  • Charging and discharging system, vehicle and alternating-current and direct-current power supply selection circuit
  • Charging and discharging system, vehicle and alternating-current and direct-current power supply selection circuit

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Embodiment Construction

[0037] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary, and embodiments of the present invention are described in detail below.

[0038] In order to solve the above problems, the following reference Figure 2-Figure 3 The charging and discharging system of the embodiment of the first aspect of the present invention is described. The system can effectively solve the compatibility problem of AC and DC charging and distribution, and has low cost.

[0039] In the embodiment, the basic concept of the embodiment of the present invention is based on the standard AC charging method of the vehicle, such as figure 2 As shown, the embodiment of the present invention is compatible with the AC charging mode and does not change the core component of the AC charging on-board charging and discharging device, and designs the multiplexing of the DC charging port and the AC charging port, that is, rea...

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Abstract

The invention discloses a charging and discharging system, a vehicle and an alternating-current and direct-current power supply selection circuit, and the charging and discharging system comprises a power distribution module, a vehicle-mounted charging and discharging device and the alternating-current and direct-current power supply selection circuit. The power distribution module comprises a direct-current relay unit and an alternating-current relay, and the direct-current relay unit is used for being switched on during direct-current charging and discharging and switched off during alternating-current charging and discharging; the alternating-current relay unit is used for being disconnected during direct-current charging and discharging and closed during alternating-current charging and discharging; the alternating-current and direct-current power supply selection circuit is used for controlling the coil of the alternating-current relay unit to be powered off during DC charging and discharging and controlling the coil of the alternating-current relay unit to be powered on during AC charging and discharging. The system can effectively solve the problem of compatibility of AC / DC charging and power distribution, and is low in cost.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a charging and discharging system, a vehicle and an AC / DC power selection circuit. Background technique [0002] In related technologies, inconvenient charging and long charging time have always been problems that need to be solved urgently in the promotion of new energy vehicles. Dual-mode vehicles are powered by oil and electricity, part of which comes from batteries and part of which comes from fuel. The demand for charging is relatively less dependent than that of pure electric vehicles. Therefore, most dual-mode vehicles are equipped with communication methods as standard, such as figure 1 The display shows the AC charging method, that is, connecting to an AC power supply device for charging. But at present, with the popularity of new energy vehicles, people are paying more and more attention to new energy vehicles, and they have a stronger voice on the convenience and spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/20B60L53/22H02J7/02H02J7/00
CPCB60L53/20B60L53/22H02J7/02H02J7/00045H02J2207/40Y02T10/70Y02T10/7072Y02T90/14
Inventor 李想想石雷罗建兴王旭东陈明文
Owner BYD CO LTD
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