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Power Systems

A power system and electrical technology, applied in the field of power systems, can solve problems such as power supply failures and inability to supply power, and achieve the effect of reducing changes

Active Publication Date: 2020-03-03
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned structure, if the failure of the lead storage battery occurs, power cannot be supplied from the lead storage battery to general loads.
In addition, if the lithium-ion battery fails, the power supply from the lithium-ion battery to the load requiring constant voltage will be cut off, and there is a possibility of failure.

Method used

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Embodiment Construction

[0017] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. A vehicle using the power supply system of this embodiment runs with an engine (internal combustion engine) as a drive source, and has a so-called idling stop function and a coasting function.

[0018] Such as figure 1 As shown, this power supply system includes a rotary machine 10 , a lead storage battery 11 , a lithium ion storage battery 12 , a starter 13 , various electric loads 14 a to 14 c , a MOS switch 15 , and an SMR switch 16 . Among them, the lithium-ion storage battery 12 and the respective switches 15 and 16 are accommodated in an unillustrated housing (accommodating case) to be integrated to form a battery unit U. In addition, the battery unit U has a control unit 20 constituting a battery control unit, and the switches 15 and 16 and the control unit 20 are accommodated in a housing in a state of being mounted on the same board.

[0019] In the ba...

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PUM

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Abstract

A power supply system used in a vehicle having a rotating machine (10) driven by electric power supply to start an engine, including: a lead storage battery (11) and a lithium ion storage battery (12), which are connected to the rotating machine (10) Parallel connection; MOS switch (15), which is connected to the lead storage battery (11) and the lithium ion storage battery (12) in the first connection line (21) electrically connecting the lead storage battery (11) and the lithium ion storage battery (12) Between; electrical loads (14a~14c), they are connected to the lead storage battery side among the lead storage battery side and the lithium ion storage battery side in the first connection line (21) through the mode of the MOS switch (15); and A control unit (20) maintains a MOS switch (15) in an on state after the power supply of the vehicle is turned on, except for starting the engine by the generator (10).

Description

technical field [0001] The present invention relates to a power supply system mounted on a vehicle. Background technique [0002] A power supply system mounted on a vehicle uses a plurality of storage batteries (for example, a lead storage battery and a lithium ion storage battery), and selectively uses each storage battery to supply electric power to various electric loads of the vehicle. [0003] For example, in the technology disclosed in Japanese Patent Application Laid-Open No. 2012-130108, a lead storage battery is connected to a lithium ion storage battery through a switch. In addition, among various electrical loads, the voltage required to supply electric power is approximately constant or at least fluctuates within a predetermined range. The constant voltage required for stability requires that the electrical load be electrically connected to the lithium ion storage battery side. In this way, the lithium-ion battery is responsible for the power supply to the load ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/03B60R16/033H02J7/34
CPCB60R16/03B60R16/033H02J7/34H01M10/48H01M16/00B60L1/00B60L2260/26B60L58/20H01M10/06H01M10/0525H01M2220/20Y02E60/10Y02T10/70B60W10/00
Inventor 寺本年世齐藤成则
Owner DENSO CORP