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A low-voltage battery supplemental circuit working method for new energy vehicle

A technology for low-voltage batteries and new energy vehicles. It is applied in battery circuit devices, different battery charging, charging/discharging current/voltage regulation, etc. It can solve the problems of low-voltage battery power and achieve the effect of avoiding deep discharge.

Active Publication Date: 2019-01-11
CHINA AUTOMOTIVE ENG RES INST
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, the low-voltage batteries for pure electric vehicles designed by various OEMs have small power

Method used

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  • A low-voltage battery supplemental circuit working method for new energy vehicle
  • A low-voltage battery supplemental circuit working method for new energy vehicle
  • A low-voltage battery supplemental circuit working method for new energy vehicle

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Embodiment Construction

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0047] The invention discloses a new energy vehicle low-voltage storage battery supplementary circuit working method, such as figure 1 As shown, it includes a low-voltage battery, a high-voltage battery, a DC / DC step-down module, a battery current acquisition module, a battery voltage acquisition module, a battery temperature acquisition module and a vehicle controller. In this embodiment, the low-voltage battery is a vehicle battery with an output voltage of 12V, and the high-voltage battery is a 24V or 48V lead-acid battery.

[0048] ...

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Abstract

A low-voltage battery supplemental circuit working method for new energy vehicle includes such step as connecting current collecting end of battery current collecting module with current collect end of low-voltage battery, connecting current output end of battery current collecting module with current input end of whole vehicle controller. The voltage acquisition terminal of the battery voltage acquisition module is connected with the voltage acquisition terminal of the low-voltage battery, and the voltage output terminal of the battery voltage acquisition module is connected with the voltageinput terminal of the vehicle controller. The temperature acquisition terminal of the battery temperature acquisition module is connected with the temperature acquisition terminal of the low-voltage battery, and the temperature output terminal of the battery temperature acquisition module is connected with the temperature input terminal of the vehicle controller. The invention can avoid the deep discharge of the low-voltage battery, cause irreversible damage to the battery, is favorable for the whole service life of the battery to be in a shallow charging and shallow discharging state, greatlyprolongs the service time of the battery, and reduces the service cost and maintenance cost of the vehicle owner.

Description

technical field [0001] The invention relates to the technical field of power replenishment for a low-voltage battery of a new energy vehicle, in particular to a working method for a power supplement circuit of a low-voltage battery of a new energy vehicle. Background technique [0002] For new energy vehicles, the low-voltage battery of the whole vehicle is mainly used to supply power to other control modules such as the vehicle anti-theft module and the vehicle remote wake-up control module when the vehicle is parked and locked. Different from the low-voltage battery of traditional fuel vehicles, which outputs a large current when starting, the power requirement of the low-voltage battery of pure electric vehicles is small. Therefore, the low-voltage batteries for pure electric vehicles designed by various OEMs have relatively low power. On the other hand, the low-voltage battery (lead-acid battery) is in a discharge state when the vehicle is parked and locked. In order to...

Claims

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Application Information

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IPC IPC(8): H02J7/00B60L1/00
CPCB60L1/00H02J7/0036H02J7/0047H02J7/0049H02J7/0068H02J7/007H02J2207/20
Inventor 徐磊杨勇张衡周亚棱关静
Owner CHINA AUTOMOTIVE ENG RES INST
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