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Electrical circuit breaker, method of operating an electrical circuit breaker and electrical traction network

A safety device and electrical technology, applied in the field of electrical traction network, can solve problems such as high trigger threshold, achieve the effect of small structure space, save control electronic equipment, save expenses and costs

Active Publication Date: 2018-06-05
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these large safety devices have a relatively high tripping threshold in the new state, so that a correspondingly large cable cross-section of the connected high-voltage vehicle network must be selected.

Method used

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  • Electrical circuit breaker, method of operating an electrical circuit breaker and electrical traction network
  • Electrical circuit breaker, method of operating an electrical circuit breaker and electrical traction network
  • Electrical circuit breaker, method of operating an electrical circuit breaker and electrical traction network

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Embodiment Construction

[0040] exist figure 1 A schematic illustration of a connection unit 51 in a motor vehicle 50 is shown in . The connection unit 51 has two electromechanical contactors 52 , 53 , a current sensor 56 , fuses 54 a , b and a controller 55 . During battery operation (e.g. while driving or while charging the battery), the battery cells 57 and the contactors 52, 53 of the high-voltage battery 12 are protected against overloading by limiting the maximum permissible current, wherein current boundary conditions such as the battery cells 57 temp. For this purpose, the controller 55 detects via the current sensor 56 the current supplied by the battery unit 57 to consumers such as the electric motor 59a and the air conditioner compressor 59b of the vehicle, the heater 59c, the charging device 59d or the DC / DC converter 59e. If the maximum current is exceeded, the contactors 52 , 53 are opened by means of the controller 55 after a predefined plausibility test time. Damage to the battery u...

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PUM

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Abstract

The invention relates to an electrical circuit breaker, method for operating an electrical circuit breaker, and an electrical traction supply system, including an electro-pyrotechnic igniter (3), a severing element (4) that moves by the electro-pyrotechnic igniter, and a bus (5) having a separation section (6), wherein the movable severing element is arranged in relation to the electro-pyrotechnicigniter and the separation section of the bus so that, after the electro-pyrotechnic igniter is triggered, the movable severing element is set in motion and severs the bus in the separation section,wherein the electrical circuit breaker includes at least one triggering apparatus (8a, 8b) configured to provide an ignition current necessary for triggering the electro-pyrotechnic igniter based on the current transmitted by the at least one portion of the current rail or time change thereof while the current transmitted by the at least one portion (11a, 11b) of the bus and the time change thereof exceeds a boundary value. The invention also relates to an associated method and an electrical traction network.

Description

technical field [0001] The invention relates to an electric safety device, an operation method of the electric safety device and an electric traction network. Background technique [0002] A high-voltage battery for a vehicle contains, in addition to the battery cells, a connection unit (“Battery Junction Box”), which enables the high voltage inside the battery to be actively connected to or disconnected from the vehicle traction network. This makes it possible for the high voltage to be present on the traction network of the vehicle only during driving, whereas no voltage is present when the vehicle is stationary. Usually, the connection unit has two electromechanical contactors via which the positive and negative paths can be connected or disconnected. [0003] During battery operation (eg while driving or while charging the battery), the battery cells and electromechanical contactors are protected against overloading by limiting the maximum permissible current, taking in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/04B60R16/03
CPCB60L3/04B60R16/03B60L3/0046H01H39/006B60L2240/545B60L50/64H02H7/18H01H2039/008B60L58/24Y02T10/70
Inventor R.库贝
Owner VOLKSWAGEN AG