High-voltage protection device for power battery of new energy vehicle
A power battery and high-voltage protection technology, which is applied in the direction of electrical devices, battery/fuel cell control devices, secondary battery repair/maintenance, etc., can solve the problems of poor temperature stability and detection accuracy, poor expandability, and difficulty in achieving high Low-voltage channel switching and other issues, to achieve high stability and detection accuracy, improve safety, and improve the effect of expansion capabilities
Pending Publication Date: 2022-06-03
HENAN VOCATIONAL & TECHN COLLEGE OF COMM
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
It is a current detection circuit in the prior art, which uses transistors as a whole to form a current mirror, which has low power consumption, but poor temperature stability and detection accuracy
[0004] like figure 2 As shown, it is the high-voltage protection circuit of the prior art. In the figure, only the high-voltage protection detection function is involved, and it is difficult to realize the switching of high-voltage and low-voltage paths, and the future expandability is poor.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The present invention will be further described below in conjunction with the embodiments.
[0022] like image 3 , Figure 4 , Figure 5 As shown, a high-voltage protection device for a power battery of a new energy vehicle is proposed for this application, which includes a state acquisition front-end, a multiplexer, and a power supply high-voltage management circuit connected in sequence.
[0023] In the state acquisition front-end circuit, the current of the power battery under normal operation is an important indicator to ensure the safety of the battery. Once the transient current of the battery is too large during the charging and discharging process, it may cause the battery to overheat and cause serious accident hazards. Therefore, the research on the current detection circuit of the power battery pack is also particularly critical. Because the subsequently selected ADC converts an analog voltage signal, the current should be converted into an analog voltage ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a high-voltage protection device for a power battery of a new energy vehicle. The high-voltage protection device comprises a state acquisition front end, a multiplexer and a power supply high-voltage management circuit, current and temperature signals of the state acquisition front end are respectively detected by a Hall sensor and a temperature sensor; the multiplexer is provided with a high-voltage switch and a low-voltage switch for selecting high-voltage information of the battery and analog low-voltage signals converted by temperature and current, and the state information of the battery entering the ADC is selected by switching on and switching off the switches. The power supply high-voltage management circuit is based on a linear voltage regulator structure, the power supply voltage rejection ratio of the circuit is improved by combining a pre-voltage-stabilizing circuit and a negative feedback loop, a soft start circuit is designed, and the electrification safety of the power supply management circuit is ensured.
Description
technical field [0001] The present application relates to the field of power batteries and high-voltage protection, in particular to a high-voltage protection device for a power battery of a new energy vehicle. Background technique [0002] In today's automotive industry, the level of development of electric vehicles is further improved. Among them, detecting the state of the battery pack inside an electric vehicle is one of the core technologies for the development of electric vehicles. However, the domestic technology progress is slow, and there are few studies on such problems. At the request of the manufacturer, it is necessary to independently develop a battery state detection circuit. Based on the current research situation in our country, a circuit that can detect the state of electric vehicle power battery is designed. Realize the detection of current, temperature and voltage, realize the high-voltage protection of the power battery, and ensure that the electric ve...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): B60L3/00B60L58/10B60L58/24H01M10/42
CPCB60L3/0046B60L3/00B60L58/10B60L58/24H01M10/42H01M2220/20Y02T10/70
Inventor张涛陈楠秦军磊崔源姬中平李迪张羽昆罗江婷程斯张晓波
OwnerHENAN VOCATIONAL & TECHN COLLEGE OF COMM