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Battery unit and method for operating a battery unit

A technology for battery cells and battery modules, which is applied in the direction of battery circuit devices, batteries, electrical components, etc., and can solve problems such as impracticality

Pending Publication Date: 2020-12-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This seems impractical due to the high number of variants of motor vehicles and lead-acid batteries and battery sensors that exist on the market

Method used

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  • Battery unit and method for operating a battery unit
  • Battery unit and method for operating a battery unit
  • Battery unit and method for operating a battery unit

Examples

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Embodiment Construction

[0054] In the following description of embodiments of the invention, identical or similar elements are identified with the same reference numerals, a repeated description of these elements being omitted in individual cases. The figures show only schematically the subject-matter of the invention.

[0055] figure 1 A schematic diagram of a battery unit 10 according to the first embodiment is shown on an on-board electrical system 50 of a motor vehicle (not shown here). In this context, the supply line of the pilot voltage in the motor vehicle is referred to as vehicle electrical system 50 .

[0056] Vehicle electrical system 50 here has a nominal voltage of 12 volts with respect to ground line 55 in the motor vehicle. The battery unit 10 has a battery sensor 52 .

[0057] The battery unit 10 includes a positive pole 12 which is connected to a vehicle electrical system 50 . The battery cell 10 also includes a negative pole 11 connected to a battery sensor 52 . The battery se...

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PUM

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Abstract

The invention relates to a battery unit (10) for use in a vehicle electrical system (50) of a motor vehicle, comprising a battery module (20) for producing a first voltage between a positive pole (12)and a negative pole (11), a battery sensor (52), which is electrically connected to the negative pole (11), and a control element (30), which has a first terminal (31) electrically connected to the positive pole (12) and which comprises a DC-to-DC converter (35). The DC-to-DC converter (35) generates a second voltage between a second terminal (32) of the control element (30) and the negative pole(11) in dependence on at least one state variable of the battery module (20), and the battery sensor (52) is electrically connected to the second terminal (32), the battery sensor (52) having means for measuring the second voltage and means for measuring a current flowing through the negative pole (11), or the battery sensor (52) comprising a current sensor and being connected to a control unit which has means for measuring the second voltage and / or means for determining a current flowing through the negative pole (11). The invention also relates to a method for operating a battery unit (10)according to the invention in a vehicle electrical system (50) of a motor vehicle, wherein the second voltage is generated by the DC-to-DC converter (35) of the control element (30) in dependence on the state variable of the battery module (20).

Description

technical field [0001] The invention relates to a battery unit for use in an on-board electrical system of a motor vehicle, comprising a battery module for generating a first voltage applied between the positive pole of the battery unit and the negative pole of the battery unit, a battery electrically connected to the negative pole A battery sensor and a control element having a first contact electrically connected to the positive pole and including a DC transformer. The invention also relates to a method for operating a battery unit according to the invention in an onboard electrical system of a motor vehicle. Background technique [0002] In conventional motor vehicles with an internal combustion engine, lead-acid batteries are often used as energy stores in the 12V vehicle electrical system. Such lead-acid batteries with positive and negative poles are used in particular as starter batteries for starting internal combustion engines. The vehicle electrical system and its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/382
CPCG01R31/006G01R31/382B60R16/033H01M2220/20H01M10/425H01M10/482H01M10/0525Y02E60/10G01R31/3842H02J2207/20H02J7/0048H02J7/005H01M50/569H01M2010/4271
Inventor M·霍厄瑙M·福克斯K-J·舒勒A·莱姆基J·柯纳B·开普勒R·格罗施克C·威廉
Owner ROBERT BOSCH GMBH
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