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Battery arrangement system with improved symmetry

A battery, balancing technology, applied in battery circuit devices, batteries, secondary batteries, etc., can solve problems such as damage to energy efficiency

Active Publication Date: 2020-02-14
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This impairs energy efficiency

Method used

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  • Battery arrangement system with improved symmetry
  • Battery arrangement system with improved symmetry
  • Battery arrangement system with improved symmetry

Examples

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Embodiment Construction

[0025] exist figure 1 A first embodiment of a battery arrangement system 100 according to the invention is shown in . The first battery unit 111 is connected in series with the second battery unit 121 and the third battery unit 131 . A differential amplifier 150 designed as an operational amplifier is provided, the output of which is coupled to the second pole (in this case the positive pole) of the second battery cell 121 . The non-inverting input end of the differential amplifier 150 is connected to the positive pole of the first battery unit 111 . The inverting input terminal of the differential amplifier 150 is connected to the first pole (here, the negative pole) of the first battery cell 111 via the first resistor R1. The inverting input terminal of the differential amplifier 150 is connected to the output terminal of the differential amplifier 150 and to the positive pole of the second battery unit 121 via the second resistor R2 and the resistor R0 . In this first sp...

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Abstract

The invention relates to a battery arrangement system (100), comprising a first battery unit (111) with a first terminal and a second terminal; a second battery unit (121) which is serially connectedto the first battery unit (111) and which comprises a first terminal and a second terminal; and a differential amplifier (151) with an inverting input, a non-inverting input, and an output at which anamplified difference between the signal at the inverting input and the signal at the non-inverting input is produced; wherein the non-inverting input of the differential amplifier (151) is connectedto the second terminal of the first battery unit (111) and to the first terminal of the second battery unit (121), the inverting input of the differential amplifier (151) is coupled to the first terminal of the first battery unit (111) and to the second terminal of the second battery unit (121), and the output of the differential amplifier (151) is connected to the second terminal of the second battery unit (121). The invention is characterized in that a coupling element (200) with two load terminals is connected between the output of the differential amplifier (151) and the second terminal ofthe second battery unit (121), the coupling element allowing the second battery unit (121) to be charged via the coupling element (200) but at most allowing a slight discharge of the second battery unit in the direction of the output of the differential amplifier (151).

Description

technical field [0001] The invention relates to a battery arrangement according to the preamble of claim 1, an electric drive according to claim 9 comprising an electric machine connected to such a battery arrangement, and an electric drive with such an electric drive. Motor vehicle 10 of the driving device. Background technique [0002] In order to make the voltage available thereby as uniform as possible and thus to achieve the best possible power capability in a battery arrangement comprising different battery cells, so-called voltage balancing circuits (often also referred to as battery cell balancing Circuit (battery cell balancing circuits)). That is, for example in US 2005 / 0269989 A1 a circuit is described which equalizes the battery cells to be balanced (the battery cells may also include multiple battery cells). Furthermore, such a circuit according to US 2014 / 0035360 A1 is connected in such a way that it can also be expanded as desired. [0003] DE 10 2016 207 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCB60L50/66H01M10/425H01M2220/20H01M10/441Y02T10/70Y02T10/7072Y02T90/14Y02E60/10B60L53/10H02J7/0016H02J7/04
Inventor S·罗瑟
Owner BAYERISCHE MOTOREN WERKE AG
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