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contactor device

A technology of contactors and contact bridges, applied in relays, contact engagement, non-polar relays, etc., can solve problems such as attention interference and reduced driving comfort, and achieve the effects of improving comfort, reducing switching noise, and simplifying the design structure

Active Publication Date: 2017-04-12
ROBERT BOSCH GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concentration of the user of the motor vehicle is also disturbed by the loud switching noise, which leads to a reduction in the driving comfort associated with the motor vehicle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] figure 1 A circuit diagram of an energy storage battery 2 connected to the electrical on-board electrical system of a motor vehicle is shown. The energy storage battery 2 is connected via main contactors 3 and 4 to connection points 5 and 6 which lead to the high-voltage on-board electrical system of the motor vehicle. On the positive side of the accumulator, a precharging contactor 7 and a precharging resistor 8 are connected in series parallel to the main contactor 3 .

[0019] When the motor vehicle is switched on, the contactor 4 at the negative pole of the accumulator is first closed. The pre-charging contactor 7 is then closed. As a result, the electrical loads and the inverter (and sometimes the capacitors contained therein) on the high-voltage network are initially supplied with voltage via the pre-charging resistor 8 . After a certain time delay, the contactor 3 is closed and the pre-charging contactor 7 is opened again, after which the motor vehicle is read...

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PUM

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Abstract

The present invention includes a contactor device (1) including at least two contactors (3, 4). Each of the contactors (3, 4) includes at least one contact bridge (9, 10) which can reciprocate between a closing position and a maximum opening position. The contactors (3, 4) head for each other while the contact bridges (9, 10) move to each maximum position at the same time. The contactors are separated from each other while moving to each closing position at the same time or moving in reverse. In the contactor device, when the contact bridges (9, 10) reach their closing positions and / or their maximum positions, they can brake with a buffer method. The contactor device (1) includes at least one damping device (18).

Description

technical field [0001] The invention relates to a contactor device. Background technique [0002] In electrically propellable motor vehicles, such as hybrid vehicles and electric vehicles, accumulators, which are mostly produced on a lithium basis, are usually used as the main energy source. In such accumulators, generally one hundred accumulator cells are connected in series, whereby voltages of approximately 400 volts and currents of several hundred amperes can be generated, which flow, for example, when the motor vehicle is accelerating or braking at full speed. [0003] The accumulator is connected to the vehicle power grid through a contactor. Conventionally contactors are generally relatively large and heavy in order to be able to withstand high currents and to be able to switch the currents. [0004] When the motor vehicle is started or switched off, the contactors are switched, which is usually accompanied by relatively loud switching noises, which can also be incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H50/30H01H1/20H01H51/20
CPCH01H50/30H01H50/546H01H51/20H01H50/045H01H50/305
Inventor G·加兰布
Owner ROBERT BOSCH GMBH