Voltage measurement method, operating method and control device for a vehicle electrical system, and vehicle electrical system and vehicle

A technology of voltage measurement and vehicle network, which is applied in the field of vehicle network and vehicle itself, can solve the problems such as unavoidable additional costs, achieve the effect of reducing equipment expenses and investment costs, and improving accuracy

Active Publication Date: 2020-06-02
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The measurement overhead required for this precision has hitherto been associated with corresp

Method used

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  • Voltage measurement method, operating method and control device for a vehicle electrical system, and vehicle electrical system and vehicle
  • Voltage measurement method, operating method and control device for a vehicle electrical system, and vehicle electrical system and vehicle

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Embodiment Construction

[0037] Below, refer to figure 1 with 2 , to describe the embodiments and technical background of the present invention in detail. Identical and equivalent elements and parts acting in the same or equivalent manner are denoted by the same reference numerals. A detailed description of the elements and components mentioned is not repeated each time the elements and components appear.

[0038] The features and other properties shown can be separated from one another in any desired form and can be combined with one another in any desired way without departing from the spirit of the invention.

[0039] figure 1 A vehicle network 100 is shown schematically, which can be used in conjunction with the operating method according to the invention and / or the voltage measuring method S according to the invention.

[0040] In this embodiment, the figure 1 The on-vehicle network 100 shown in is composed of a high-voltage network 10, a traction network 20, and a DC voltage charging networ...

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Abstract

The invention relates to a voltage measurement method for a vehicle electrical system (100) of a vehicle, which vehicle electrical system consists of a high-voltage network (10) and at least one further network (20, 30). In the vehicle electrical system (100), (i) the high-voltage network (10) has a voltage-measuring device (15) that can be or is electrically connected to a positive terminal (11')and to a negative terminal (12') of a high-voltage source (40) by means of a first line (11) and by means of a second line (12), respectively, and (ii) the further network (20, 30) has first and second lines (21, 31; 22, 32), which can be electrically connected to the first line (11) and to the second line (12), respectively, of the high-voltage network (10) by means of contactors (23N, 23P; 33N,33P) and has a further voltage-measuring device (25, 35) that can be or is electrically connected to the first and second lines of the further network. In the method, (iii) in the calibration mode with the contactors (23N, 23P; 33N, 33P) closed, the voltage-measuring device (25, 35) of the further network (20, 30) is calibrated against the voltage-measuring device (15) of the high-voltage network(10) such that at least one calibration parameter is derived, and (iv) in the measurement mode, a voltage measurement is performed in the further network (20, 30) by means of the voltage-measuring device (25, 35) of the further network (20, 30), with compensation by means of the calibration parameter.

Description

technical field [0001] The invention relates to a voltage measurement method, an operating method and a control device for a vehicle network as well as the vehicle network and the vehicle itself. Background technique [0002] In many vehicle designs that rely at least in part on electrical operation, battery-based high-voltage networks are increasingly used in the on-board network in cooperation with other networks, for example with traction, low-voltage and charging networks. In such on-board networks, knowledge of the electrical operating parameters, in particular the voltages within the sub-networks, is required for safe operation. Another boundary condition is to maintain a certain measurement accuracy when determining the value of the voltage. The measuring outlay required for this precision has hitherto been associated with corresponding additional costs, which cannot be avoided by known techniques without loss of precision. Contents of the invention [0003] The t...

Claims

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Application Information

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IPC IPC(8): G01R35/00G01R19/00
CPCG01R35/005G01R19/0084G01R31/007
Inventor J.朱尔J.霍林格
Owner VOLKSWAGEN AG
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