Automotive power battery high-voltage connection control system
An automotive power battery and connection control technology, applied in the field of automotive battery high-voltage connection control system and high-voltage connection control system, can solve the problems of affecting the safety of the whole vehicle, short service life, limited switching times, etc., and shorten the high-voltage power-on time. , the effect of long service life and fast power-off
Inactive Publication Date: 2017-02-22
南通海轶锶换热设备有限公司
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Problems solved by technology
If you do not do anything to directly connect the power battery and the electrical equipment, the voltage applied to the relay will be too large, and the current flowing through the relay will be too large and the relay will be burned.
[0004] At present, the battery of an electric vehicle needs to be powered on quickly. To shorten the power-on time, a resistor with a small resistance value must be selected, so that the current flowing through the relay will increase, which will affect the service life of the relay.
If the resistance value of the resistor is selected too large, it cannot meet the requirements of the whole vehicle for the power-on time; in some cases (such as leakage of electricity, personal safety, collision, motor out of control causing speeding, etc.), there may be a problem of power-off with load. special requirements
At this time, a high-voltage arc will appear in the relay, which will burn the relay and fail to complete the power-off process.
In addition, the relay is connected mechanically, which has a short service life and a limited number of switches
Especially when the switch operation is performed under high current, it is easier to damage the relay. In severe cases, the relay cannot be disconnected, which will affect the safety of the whole vehicle.
Moreover, the relay is inside the battery pack, so it is inconvenient to repair and replace.
Method used
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[0016] Referring to Figure 1, the controller 1 is connected to the on-board detection system 10; the communication receiving port of the controller is connected to the on-board computer
[0017] 11 Communication output interface connection; the controller is respectively connected to the positive pole of the vehicle power battery 3 and the load 4 through the three branches of the working circuit 2; one of the three branches of the working circuit is connected to the power-on IGBT6 gate G, the upper Power IGBT collector C, current limiting resistor 7, load, negative relay 5, vehicle power battery 3 negative pole; the other branch is connected to the power-off IGBT8 gate G, power-off IGBT collector C, and connected to the load; the third The branch is connected to the load through the main relay 9; the positive pole of the power supply is connected to the emitter E of the upper IGBT, the main relay, and the emitter E of the lower power IGBT in turn.
[0018] The detection system...
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The invention provides an automotive power battery high-voltage connection control system and aims at solving the problem that a relay is connected in a mechanical mode, is short in service life, is limited in switching time, is easily damaged under large-current switching operation, cannot be disconnected under severe situation and is inconvenient to maintain due to the fact that the relay is located inside a battery pack. The automotive power battery high-voltage connection control system comprises a controller and is characterized in that a communication data interface and an input signal interface are connected with the controller, two IGBT and a main relay are serially connected to three branch circuits of the controller, the two IGBT and the main relay are connected in parallel, a positive pole of a power battery is connected to one end of the parallel connection circuit, the other end of the parallel connection circuit is connected with a load, and current-limiting resistors are connected to the branch circuit of one IGBT. The other end of the load is connected with a cathode relay, and the cathode relay is connected to a negative pole of the power battery. The automotive power battery high-voltage connection control system has the advantages that the service life is long, high-voltage electrifying time is shortened, the de-electrifying speed is high and the system is safe and stable. The system further has the advantages of being simple and convenient to operate, simple in structure, convenient to install and the like.
Description
technical field [0001] The invention relates to the field of a high-voltage connection control system for an automobile battery, in particular to a high-voltage connection control system for an automobile power battery. Background technique [0002] With the depletion of earth's energy and the seriousness of environmental pollution year by year, countries around the world are paying more and more attention to energy conservation and environmental protection. In the more than 100 years of its development, the automobile industry has made significant improvements and considerable progress in energy conservation, pollution, emissions and other aspects, but the pollutants emitted by its exhaust gas are still the main pollution source of the earth's atmosphere today. The automobile industry consumes a large part of the world's oil production. According to statistics, the energy consumption of vehicles accounts for 40% of the world's total energy consumption, and the energy consum...
Claims
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IPC IPC(8): B60L3/06B60L11/18
CPCB60L3/0023B60L3/06B60L58/13B60L2240/549B60L2260/44Y02T10/70Y02T90/16
Inventor程海霞
Owner南通海轶锶换热设备有限公司