Title:
DC/DC CONVERSION CIRCUIT, POWER UNIT, CHARGING PILE, AND CHARGING AND DISCHARGING HEATING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/133831
Kind Code:
A1
Abstract:
Provided are a DC/DC conversion circuit (10), a power unit (1), a charging pile (100), and a charging and discharging heating method. The circuit comprises a first rectification module (11), an input end of the first rectification module (11) being connected to a power grid (2) by means of an AC/DC conversion circuit (20); a transformer module (12), an input end of the transformer module (12) being connected to an output end of the first rectification module (11); an energy storage module (14); a second rectification module (13), an input end of the second rectification module (13) being used for being connected to an output end of the transformer module (12) or being connected to the energy storage module (14), and an output end of the second rectification module (13) being used for being connected to a battery pack (3) of an electric vehicle when the charging pile (100) charges the electric vehicle; the second rectification module (13) is used for being in communication with the transformer module (12) and for implementing charging and discharging within a first frequency range between the power grid (2) and the battery pack (3) so as to heat the battery pack (3); or is used for being in communication with the energy storage module (14) and for implementing charging and discharging within a second frequency range between the energy storage module (14) and the battery pack (3) so as to heat the battery pack (3); the first frequency range is smaller than the second frequency range.
Inventors:
LI ZHANLIANG (CN)
DAN ZHIMIN (CN)
YAN YU (CN)
HUANG XIAOJIAN (CN)
ZUO XIYANG (CN)
ZHAO YUANMIAO (CN)
WANG XIAO (CN)
DAN ZHIMIN (CN)
YAN YU (CN)
HUANG XIAOJIAN (CN)
ZUO XIYANG (CN)
ZHAO YUANMIAO (CN)
WANG XIAO (CN)
Application Number:
PCT/CN2022/072104
Publication Date:
July 20, 2023
Filing Date:
January 14, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/615; B60L53/31; B60L58/27
Foreign References:
| CN113733986A | 2021-12-03 | |||
| CN112599889A | 2021-04-02 | |||
| CN213734672U | 2021-07-20 | |||
| CN202423513U | 2012-09-05 | |||
| CN202435108U | 2012-09-12 | |||
| US20130181682A1 | 2013-07-18 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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