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A DC power supply system for electric vehicles

A power supply system and electric vehicle technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve the problems of high energy consumption and high cost, and achieve the effect of reducing hardware costs and energy consumption

Active Publication Date: 2016-03-30
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of high energy consumption and high cost of the existing DC power supply system for electric vehicles, the present invention provides a DC power supply system for electric vehicles with low cost and low energy consumption

Method used

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  • A DC power supply system for electric vehicles
  • A DC power supply system for electric vehicles
  • A DC power supply system for electric vehicles

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Embodiment Construction

[0019] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in 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.

[0020] Although the existing electric vehicle DC power supply system can realize real-time power supply for loads, the power battery in the system always supplies power to the auxiliary power module no matter whether the system is in working state, so when the system stops working, it still needs to consume the energy of the system, and then cause energy loss. In order to solve the above-mentioned technical problems existing in the existing electric vehicle DC power supply system, the present invention provides a DC power supply system for electric vehicles. The auxiliar...

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Abstract

The invention provides a direct current power supply system of an electric vehicle. The direct current power supply system comprises a motive power battery, a direct current-direct current (DC-DC) module, a storage battery, an auxiliary power supply module, a control module, a load and a first switch, wherein the motive power battery is respectively connected with the load and the storage battery through the DC-DC module, the storage battery is connected with one end of the auxiliary power supply module through the first switch, the other end of the auxiliary power supply module is respectively connected with the DC-DC module and the control module, and the control module is connected with the DC-DC module; the control module is used for receiving starting commands and controls the motive power battery to supply power to the load and the storage battery through the DC-DC module according to the voltage of the motive power battery, the output voltage of the DC-DC module and the load demand. The technical problems of high energy consumption and high cost of the direct current power supply system of the existing electric vehicle are solved. The direct current power supply system has the advantages that the cost is low, and the energy consumption is low.

Description

technical field [0001] The invention belongs to the field of electric vehicle power supply, and in particular relates to an electric vehicle DC power supply system. Background technique [0002] The existing electric vehicle DC power supply system such as figure 1 As shown, it includes a power battery 11, a DC-DC module 12, a battery 16, an auxiliary power supply module 14, a control module 13 and a load 15, wherein the power battery 11 is connected to the load 15 and the battery 16 through the DC-DC module 12, respectively. The power battery 11 is respectively connected to the control module 13 and the DC-DC module 12 through the auxiliary power supply module 14, and is used to supply power to the control module 13 and the DC-DC module 12, and the control module 13 is connected to the DC-DC module 12 for Receive the starting command, and control the power battery 11 to supply power to the load 15 and the storage battery through the DC-DC module 12 according to the voltage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 杨泗鹏梁树林张建华
Owner BYD CO LTD
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