Automobile power battery high-voltage connection and control system
A vehicle power battery, connection control technology, applied in electric vehicles, electric traction, vehicle energy storage and other directions, can solve the problems affecting the safety of the whole vehicle, short service life, limited switching times, etc., to shorten the high-voltage power-on time, The effect of long service life and fast power-off speed
Inactive Publication Date: 2013-06-19
BRILLIANCE AUTO
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Problems solved by technology
[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.
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[0016] see figure 1 , the controller 1 is connected with the vehicle-mounted detection system 10; the controller communication receiving port is connected with the vehicle-mounted computer 11 communication output interface; the controller is respectively connected with the positive pole of the vehicle power battery 3 and the load 4 through three branches of the working circuit 2; One of the three branches of the circuit is sequentially connected to the gate G of the power-on IGBT6, the collector C of the power-on IGBT, the current limiting resistor 7, the load, the negative relay 5, and the negative pole of the vehicle power battery 3; the other branch is connected to the power-off The gate G of IGBT8, the collector C of the power-off IGBT, are connected to the load; the third branch is connected to the load through the main relay 9;
[0017] The detection system includes a current detection device, a voltage detection device or / and a temperature detection device; the communic...
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The invention provides an automobile power battery high-voltage connection and control system which aims to solve the problems that a relay is short in service life, times of opening and closing are limited, the relay can be damaged easily under the opening and closing operation in large current, when in serious conditions, the relay can not be disconnected, and the relay is arranged inside a battery pack and inconvenient to maintain when mechanical method connection is adopted. The automobile power battery high-voltage connection and 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 insulated gate bipolar transistors (IGBTs) and a main relay are arranged on three branches of the controller in a tandem connection mode, the two IGBTs are in parallel connection with the main relay, one end of the parallel circuit is connected with the positive electrode of a power battery, the other end of the parallel circuit is connected with a load, and a branch of one of the IGBTs is connected with a current limiting resistor. The other end of the load is connected with a negative electrode relay, and the negative electrode relay is connected with the negative electrode of the power battery. The automobile power battery high-voltage connection and control system has the advantages of being long in service life, quick in power-off speed, capable of shortening power-on time, safe and reliable. The automobile power battery high-voltage connection and control system further has the advantages of being easy 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 past 100 years of its development, the automobile industry has achieved significant improvement and great progress in energy saving, pollution, emission and other aspects, but the pollutants emitted by its tail 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 consumption of automobile...
Claims
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IPC IPC(8): B60L11/18
CPCY02T10/70
Inventor单红艳卢山王莹刘木林王兴华
OwnerBRILLIANCE AUTO