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Integration of batteries and supercapacitors in

A technology of power system and battery unit, which is applied in the direction of battery disconnection circuit, battery circuit device, collector, etc., to achieve the effect of simple structure, simple control and maintenance, and small volume

Pending Publication Date: 2022-07-22
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an additional converter with multiple semiconductor components represents an additional cost

Method used

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  • Integration of batteries and supercapacitors in
  • Integration of batteries and supercapacitors in
  • Integration of batteries and supercapacitors in

Examples

Experimental program
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Embodiment Construction

[0018] Embodiments of the present invention will now be described more fully with reference to the accompanying drawings. These embodiments should not be construed as limiting, but are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of all aspects of the invention to those skilled in the art.

[0019] Embodiments of the present invention provide an electric vehicle having an in-vehicle power supply system 1 . Electric vehicles can be passenger cars or utility vehicles of any weight class. Electric vehicles may be operated by a driver or have some degree of autonomy, such as automated guided vehicles (AGVs) or autonomous vehicles (AVs). The electric vehicle may also be an autonomous mobile robot (AMR).

[0020] image 3 It is a circuit diagram of a part of the in-vehicle power system 1 . The energy source side includes the image 3 Two parallel branches on the left and in the center: one branch with high cap...

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PUM

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Abstract

An in-vehicle power system (1) comprises: a battery branch comprising a battery cell (2) arranged in series with a diode (5); and a high-capacity cell (3) having a maximum voltage exceeding a nominal voltage of the battery cell. The battery branch and the high capacity unit are arranged in parallel to feed a load side (4) of the on-board power system. The battery branch further comprises a switching device (6) configured to disconnect the battery cells in response to an excessive load side current. The switching device may allow the high capacity cell to inject current into the load side at a voltage less than the nominal voltage of the battery cell, and / or may allow the high capacity cell to absorb regenerative current from the load side at a voltage greater than the nominal voltage of the battery cell.

Description

technical field [0001] The present disclosure relates to the field of power supply systems for vehicles, and in particular to power supply systems that integrate a battery and at least one ultracapacitor. Background technique [0002] Power systems in electric vehicles, including automated guided vehicles (AGVs) and autonomous mobile robots (AMRs), utilize batteries to power different elements or loads within the system. Typically, since multiple different voltages are required, the load side may be equipped with multiple parallel DC-DC converters for supplying power at a nominal voltage lower than the battery voltage. The load side may also include converter circuitry for stabilizing the battery voltage. exist figure 1 In the example battery powered power supply system shown, cell 2 operates at voltages in the range of 20V to 30V and is regulated at 24V by boost / buck stage 11 on which cell 2 Interface with other components of the load side 4 . The load side 4 also inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/34
CPCH02J7/345H02J7/0031H02J7/0063H02J7/00304H02J2310/40Y02T10/70B60L50/66
Inventor 艾哈迈德·阿布德拉基姆法兰斯·迪吉库伊曾
Owner ABB (SCHWEIZ) AG