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Electric actuator with pre-heating

A pre-charging, electric vehicle technology, applied in the field of vehicles, can solve problems such as damage to electronic amplifiers, high cost, inability to provide turn-on current, etc., and achieve the effect of reducing power loss

Active Publication Date: 2016-06-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, very high turn-on currents can flow, typical electronic driver stages cannot even provide such turn-on currents
This turn-on current can cause damage to the electronic amplifier
The driver stage has to be designed relatively complex only for low temperature conditions, which however entails significantly higher costs

Method used

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  • Electric actuator with pre-heating
  • Electric actuator with pre-heating
  • Electric actuator with pre-heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] from according to figure 1 A schematic circuit diagram of an electrical energy store with a battery separation unit is known from the illustration in .

[0031] exist figure 1 The battery separation unit 10 shown in is connected to a high-voltage battery 12 . The high-voltage battery includes a battery pack or a battery module, inside which a plurality of battery cells 14 are electrically connected to each other. According to figure 1 In the illustration in , the high-voltage battery 12 also includes a service plug 16 .

[0032] A battery separation unit 10 designated with reference numeral 10 comprises a positive battery pole 18 and a negative battery pole 32 . The battery disconnecting unit 10 contains a main contactor 20 for the positive battery pole 18 in a first battery connection line 42 . Main contactor 20 includes an electromechanical switch 24 , which is also referred to as a main contactor switch for battery positive pole 18 and is actuated via a main con...

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Abstract

The invention relates to a method for operating an electrical network, in particular an onboard network of a vehicle, in particular of a hybrid vehicle (HEV), of a plug-in hybrid vehicle (PHEV) or of an electric vehicle (EV). Said network comprises a battery system, which contains a battery separation unit (10), with which a high-voltage battery (12) can be separated from a battery positive pole (18) and / or a battery negative pole (32) or from both battery poles (18, 32) of the on-board network. A main contactor and / or precharging contactor coil (22, 28, 36) of at least one electromagnetic switch (20, 24) is pre-heated. In the case of a pulse-width modulation signal control, the actuation takes place with a fraction (54), preferably 10% to 30%, of an activation pulse width. In the case of actuation by direct current signals, the main contactor and / or precharging contactor coils (22, 28, 36) are preheated according to the temperature in the interior of the electrical energy accumulator with heating gradients (62, 64, 66) chosen according to the temperature.

Description

technical field [0001] The invention relates to a method for operating an electrical network, in particular an on-board electrical system of a vehicle having a battery system, for example a hybrid vehicle or an electric vehicle, which comprises a battery separation unit. With the battery disconnection unit, the electrical energy store can be disconnected from the vehicle electrical system at the battery positive pole and / or the battery negative pole. Background technique [0002] Lithium-ion battery systems are currently mostly used in stationary applications, such as wind power plants, and in installations for emergency power supplies, as well as in mobile applications, such as hybrid electric vehicles (HEV) or electric vehicles (EV). For such battery systems, very high requirements are placed on the reliability and finally on the service life with regard to the usable energy content, the usable power, the charge and discharge efficiency, the absence of memory effects. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L11/18H01H47/32
CPCB60L3/0084B60L58/10B60L2240/662H01H47/325B60L58/27H01H50/12Y02T10/70Y02T10/72Y02T90/14Y02T90/16Y10S903/903B60L3/0069B60Y2200/91B60Y2200/92H01H45/12H01H47/32B60L3/0046B60L2240/36H02J7/0031H02J7/0045H03K3/017
Inventor T.沙伊德利希S.贝格曼
Owner ROBERT BOSCH GMBH
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