Vehicle-mounted charging and discharging system and vehicle with same
A charge-discharge, capacitor technology, applied in the field of vehicles, can solve the problems of the electrolytic capacitor C1', such as lifespan, shock resistance, increased volume and cost, and unfavorable system reliability, so as to reduce the number of switching tubes, reduce cost and volume, and improve shock resistance. effect of level
Active Publication Date: 2021-03-30
BYD CO LTD
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Problems solved by technology
For this system, in order to provide a stable input DC voltage for the latter stage part2', a large-capacity electrolytic capacitor C1' is required between Part1' and Part2', which increases the volume and cost of the system, and the electrolytic capacitor C1' has a lifespan and is shock-resistant problem, which is detrimental to the reliability of the system
Method used
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Embodiment Construction
[0022] 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.
[0023] Refer below Figure 2-Figure 7 An on-vehicle charging and discharging system according to an embodiment of the present invention will be described.
[0024] figure 2 is a block diagram of an on-board charging and discharging system according to an embodiment of the present invention, such as figure 2 As shown, the vehicle charging and discharging system 100 of the embodiment of the present invention includes a first resonant circuit module 10 , a second resonant circuit module 20 , a first rectification circuit module 80 , a second rectification circuit module 81 and a control module 50 .
[0025] Wherein, the first resonant circuit module 10 is used for converting the input electrical signal. The first resonant circuit module 10 includes a firs...
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The invention discloses a vehicle-mounted charging and discharging system and a vehicle with the same, the vehicle-mounted charging and discharging system comprises two resonance circuit modules, tworectification circuits and a control module, and the first resonance circuit module performs conversion processing on an input electric signal; the second resonance circuit module performs conversionprocessing on the input electric signal; the first rectification circuit module and the second rectification circuit module are used for rectifying an input electric signal, and the two paths of resonance circuit modules reuse a three-bridge-arm circuit conversion unit; the control module controls the first resonance circuit module and the first rectification circuit module in a first half periodof power supply, or controls the second resonance circuit module and the second rectification circuit module in a second half period of power supply, or when a high-voltage battery pack charges a low-voltage battery pack, the three-bridge-arm circuit conversion unit, the first rectification circuit module and the second rectification circuit module are controlled. According to the system and the vehicle, the electrolytic-capacitor-free design is adopted, the cost can be reduced, and the stability is improved.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to an on-vehicle charging and discharging system and a vehicle with the on-vehicle charging and discharging system. Background technique [0002] figure 1 It is a circuit diagram of an on-board charging and discharging system in the related art. One end of the system is connected to the power grid, and the other end is connected to the battery pack, including two-stage circuits of Part1' and Part2'. During forward charging, Part1' realizes AC-DC conversion and power factor correction, and outputs DC voltage. Part2’ is a DC-DC converter that outputs a suitable voltage to charge the battery pack. For this system, in order to provide a stable input DC voltage for the latter stage part2', a large-capacity electrolytic capacitor C1' is required between Part1' and Part2', which increases the volume and cost of the system, and the electrolytic capacitor C1' has a lifespan and is shock-r...
Claims
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Login to View More IPC IPC(8): B60L53/20
CPCB60L53/20Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 杨柳吴昊刘宇许兴发
Owner BYD CO LTD