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Dual battery vehicle electrical systems

An electrical system, dual-battery technology, applied in battery circuit devices, electric vehicles, vehicle components, etc., can solve problems such as power consumption

Active Publication Date: 2009-09-30
FORD GLOBAL TECH LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore there is some additional power consumption in the suspend state compared to the off state

Method used

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  • Dual battery vehicle electrical systems
  • Dual battery vehicle electrical systems

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Embodiment Construction

[0013] now refer to figure 1 , a dual-battery electrical system 2 for a vehicle engine includes a first battery 4 for driving a primary load 8 and a second battery 6 for driving a secondary load 10 . The batteries 4,6 are electrically connected to their respective loads 8,10. The main load 8 is mainly used for starting the vehicle and includes the fueling system, engine management controller and safety system. Secondary loads 10 include lights (both inside and outside the car), DVD players, in-car entertainment systems and mobile phone chargers. The electrical system is thus effectively divided into a primary circuit comprising the first battery 4 and the primary load 8 and a secondary circuit comprising the second battery 6 and the secondary load 10 .

[0014] The switch 12 is connected between the positive terminals of the first battery 4 and the second battery 6 . A battery system controller 14 is configured to control the operation of the switch 12 . A key operated ign...

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Abstract

The invention relates to a dual battery vehicle electrical systems and provides dual battery electrical system for a vehicle having an engine comprises a primary load and a secondary load and is switchable between an ON state in which the engine is running, an OFF state in which the engine is not running, a START state in which the primary load requires power to start the engine, and a PAUSE state in which the engine is not running. A first battery powers the primary load, a second battery powers the secondary load, a battery switch is closable to connect the first battery to the second battery such that both batteries can provide power to both loads. The transition to and from the OFF state is via a user activated mechanism and transition to and from the PAUSE state is via a user-independent mechanism. A controller controls operation of the battery switch when the system enters and / or leaves the PAUSE state.

Description

technical field [0001] The invention relates to a dual battery electrical system for a vehicle. Background technique [0002] In today's vehicles, a large number of electrical loads are driven by one or more batteries of the vehicle. These loads typically include the starter motor used to crank the engine, and may include other systems whose operation is primarily used to start the vehicle, such as safety systems and engine management systems. When the vehicle ignition is off, it is obviously not desirable to drain one or more batteries by driving other loads such as the radio, lights, phone charger or in-car entertainment system, so that when the vehicle needs to be started, the battery does not have enough power to drive the starter mechanism. To avoid this situation, it is known to have a dual battery system in which two batteries are used to start the vehicle, one of which is dedicated to the starter mechanism. A dedicated starter battery is switched off after use so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18B60L1/00B60L1/14
CPCH02J7/1423H02J1/10Y02T10/7005F02N11/087F02N11/0866Y02T10/70B60K1/04B60R16/04B60W10/26
Inventor 马克·科恩丹尼尔·科克穆罕默德·西迪基保罗·塔伯罕达伦·库森
Owner FORD GLOBAL TECH LLC
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