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Protection device and method, and power supply system

A technology of protection device and power supply system, applied in emergency protection circuit device, automatic disconnection emergency protection device, power consumption device, etc., can solve the problems of circuit disconnection, obstacles to the normal operation of the car, and the inability of the air switch to reset automatically.

Active Publication Date: 2017-10-24
江苏易美新思新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the fuse is blown, the circuit between the power supply device and the load is disconnected, which hinders the car from returning to normal operation
In addition, the disconnection of the air switch also disconnects the circuit between the power supply equipment and the load, but because the air switch cannot be automatically reset, it also hinders the car from returning to normal operation

Method used

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  • Protection device and method, and power supply system
  • Protection device and method, and power supply system
  • Protection device and method, and power supply system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] see figure 1 , the first embodiment of the present invention provides a power supply system 10 , the power supply system 10 includes: a power supply device 11 , a load 12 and a protection device 100 . Wherein, the positive pole of the power supply equipment 11 is connected to the load 12 , and the protection device 100 is respectively connected to the negative pole of the power supply equipment 11 and the load 12 .

[0027] The power supply device 11 is used to provide electric energy for the normal operation of the load 12, and the power supply device 11 may be composed of a plurality of interconnected storage batteries. The power supply device 11 is connected to the load 12 , outputs the stored electric energy to the load 12 by discharging to ensure the normal operation of the load 12 , or obtains externally input electric energy by charging to store the electric energy.

[0028] Load 12 is a component on an automobile, for example, an electric motor. The load 12 ca...

no. 2 example

[0031] see figure 2 , the second embodiment of the present invention provides a protection device 100 , which is applied to a power supply system, and the protection device 100 includes: a detection processing module 110 and a switch module 120 . Wherein, the detection processing module 110 is respectively connected to the negative pole of the power supply device 11 and the switch module 120 , and the switch module 120 is connected to the load 12 .

[0032] The detection processing module 110 is used to detect and obtain voltage signals in the power supply loop of the power supply system. The comparator is used to determine whether the voltage signal satisfies the preset condition, and if so, triggers to output the first level to the switch module 120 . Afterwards, the comparator is used to determine whether the voltage signal falls back to meet the preset condition, and if not, triggers to output the second level to the switch module 120 .

[0033] The switch module 120 is...

no. 3 example

[0065] see Figure 6 , the third embodiment of the present invention provides a protection method applied to a protection device. The protection method includes: step S100 and step S200.

[0066] Step S100: Obtain the voltage signal of the power supply loop in the power supply system.

[0067] Step S200: judging whether the voltage signal meets the preset condition, if so, controlling the switch module to be in the off state, and then judging whether the voltage signal satisfies the preset condition, if not, controlling the switch module to be in the on state . .

[0068] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the method described above can refer to the corresponding process in the aforementioned device, which will not be repeated here.

[0069] To sum up: the embodiments of the present invention provide a protection device and method, and a power supply system, wherein the protec...

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Abstract

The embodiment of the invention provides a protection device and method and a power supply system and belongs to the field of electric transportation equipment technology, wherein the protection device is applied to the power supply system. The protection device comprises a detecting and processing module and a switch module; the detecting and processing module is separately connected with power supply equipment and the switch module, and the switch module is connected with a load. The detecting and processing module detects a voltage signal in a power supply system loop, and when the voltage signal satisfying a preset condition is judged, the switch module is controlled to be in a disconnect state so as to realize the protection of the load. When the switch module is in a disconnect state, the detecting and processing module judges whether the voltage satisfies the preset condition, if not, the switch module is controlled to be in a conducting state from the disconnect state, so that the power supply system automatically returns to normal work. Then, according to the invention, protection for the load is realized without influencing the normal work of a vehicle through the automatic judgment and control of the detecting and processing module.

Description

technical field [0001] The invention relates to the technical field of electric transportation equipment, in particular to a protection device and method, and a power supply system. Background technique [0002] With the development and improvement of science and technology, in order to reduce the consumption of non-renewable petrochemical energy, in the field of automobiles, new energy vehicles based on electric energy have gradually been applied. [0003] At present, new energy vehicles are completely powered by the power supply equipment of the battery pack, and the safety of the power supply equipment is particularly important. A fuse or an air switch is a measure for overcurrent protection or short circuit protection for the power supply equipment. When the power supply exceeds the current limit to supply power to the load, the fuse is blown or the air switch is disconnected, thereby blocking the power supply to the load and playing a protective role. After the fuse is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20H02H3/24H02H3/06B60L3/00B60L3/04
CPCB60L3/0046B60L3/04H02H3/06H02H3/207
Inventor 余韬王林侯晓华郭维
Owner 江苏易美新思新能源科技有限公司
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