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Charging voltage switching device, control method and automobile

A charging voltage and switching device technology, applied in battery circuit devices, battery/fuel cell control devices, electric vehicles, etc., can solve the problems of high cost, heavy weight, and large size, and achieve low cost, light weight, and small size Effect

Active Publication Date: 2020-08-18
GEELY AUTOMOBILE INST NINGBO CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing solutions in the market are DC / DC or Boost / buck, which are costly, heavy and large in size, and require a separate cooling system due to the large amount of heat generated

Method used

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  • Charging voltage switching device, control method and automobile
  • Charging voltage switching device, control method and automobile
  • Charging voltage switching device, control method and automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A charging voltage switching device such as Figure 1-2 As shown, it includes a voltage measurement module 6 for measuring the charging voltage amplitude of the charging device 5; a voltage judgment module 7 for judging the charging and discharging switching state according to the charging voltage amplitude of the charging device 5; a charging and discharging platform switching module 3, It is used to control the opening and closing of the controllable switch group according to the switching state of charging and discharging, that is, to control the switching between the charging and discharging circuit in series charging state, parallel charging state and discharging state. The charging and discharging circuit includes the first battery pack 1 and the second battery Group 2; switching state monitoring module 8, used to monitor the charging and discharging switching state of the charging and discharging circuit; the first battery pack 1 and the second battery pack 2 are ...

Embodiment 2

[0106] The charging and discharging circuit in the second embodiment is different from that in the first embodiment. Such as Figure 8As shown, the switch group 7 includes a fifth switch 35, a sixth switch 36 and a seventh switch 37, wherein the fifth switch 35 is a single-pole double-throw switch, and the positive pole of the first battery pack 1 is electrically connected to the first terminal of the charging device. The positive pole of the first battery pack 1 is electrically connected to the negative pole of the second battery pack 2 through the sixth switch 36, the negative pole of the first battery pack 1 is electrically connected to the positive pole of the second battery pack 2, and the positive pole of the second battery pack 2 is connected to the positive pole of the second battery pack 2. The negative poles of the second battery pack 2 are electrically connected to terminals a and b on one side of the fifth switch 35 respectively, the other side of the fifth switch ...

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Abstract

The invention relates to a charging voltage switching device, a control method and an automobile. The device comprises a voltage measurement module which is used for measuring the charging voltage amplitude of charging equipment; a voltage judgment module which is used for judging the charging and discharging switching state according to the charging voltage amplitude of the charging equipment; acharging and discharging platform switching module which is used for controlling on-off of the controllable switch group according to the charging and discharging switching state, namely controlling switching of the charging and discharging circuit among a series charging state, a parallel charging state and a discharging state; and a switching state monitoring module which is used for monitoringthe charging and discharging switching state of the charging and discharging circuit. The charging and discharging circuit comprises a first battery pack and a second battery pack. The voltage of thebattery pack is divided into two parts, and the logic relationship between the two parts of the battery pack is changed through the switching controller and the switch group, so that the voltage of the battery pack is increased and reduced, and switching of two voltage platforms is realized on the premise of ensuring the safety.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a charging voltage switching device, a control method and a vehicle. Background technique [0002] The charging system provides energy supply for the operation of electric vehicles. It is an important basic support system for electric vehicles and an important link in the commercialization and industrialization of electric vehicles. With the rapid development of the electric vehicle industry, charging technology has become one of the key factors restricting the development of the industry, and intelligent and fast charging methods have become the development trend of electric vehicle charging technology. [0003] At present, the voltage platform of pure electric family vehicles is 400VDC, the maximum power of charging piles in the market is 150kW, and the full charging time is 80-100 minutes. Some models have been developed to increase the platform voltage to 800VDC to achieve ...

Claims

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Application Information

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IPC IPC(8): B60L58/19H02J7/00
CPCB60L58/19H02J7/0024H02J7/0029H02J7/00712Y02T10/70Y02T10/7072
Inventor 潘福中占莉郑松太李慧明赵跃新吴旭峰张震
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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