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Method for detecting the functionality of load switch of battery, and battery having associated device

A technology of load switch and battery, applied in the direction of testing electrical devices in transportation, measuring electricity, electric vehicles, etc., can solve problems such as inability to diagnose, achieve the effect of saving additional components, realizing cost advantages, and realizing safety gains

Inactive Publication Date: 2015-07-15
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this malfunction cannot be diagnosed in the case of inactive batteries due to defective batteries and discharged capacitors

Method used

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  • Method for detecting the functionality of load switch of battery, and battery having associated device
  • Method for detecting the functionality of load switch of battery, and battery having associated device
  • Method for detecting the functionality of load switch of battery, and battery having associated device

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Embodiment Construction

[0027] figure 1 The battery 1 having the device for identifying the function of the load switch 3 in the embodiment of the present invention is shown. The battery 1 is, for example, a traction battery of a vehicle. The vehicle includes a plurality of electrical appliances, such as an electric drive chain (Antriebsstrang), which is powered by a battery 1. The battery 1 includes a positive connection point 12 and a negative connection point 13. Through these two connection points 12, 13, the battery 1 is coupled with the electrical appliances of the vehicle. The battery voltage of the battery 1 is provided to the electrical appliances of the vehicle through the connection contacts 12 and 13. However, in order to suppress load spikes, figure 1 When the capacitor 7 connected between the connection points 12 and 13 is charged, it is first connected to the figure 1 Electrical appliances on the vehicle side not shown in. The capacitor 7 is conductively connected to the positive ...

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Abstract

The invention relates to a method for detecting the functionality of a load switch of a battery, and a battery having an associated device. The battery capable of detecting the functionality of a load switch of a battery comprises: a first battery pole, which is arranged for conductively connecting with the first connection point of the capacitor through the first switch; a second battery pole, which is arranged for conductively connecting with the second connection point of the capacitor through the load switch; a first switching device, which is arranged for applying the switch signal to switch the load switch to an open state; a second switching device, which is arranged for closing the first switch in duration time (T) of the predicted test interval; a measuring device, which is arranged for detecting the capacitor voltage on the capacitor during or after the test intervel; and an analytical unit, which is arranged for evaluating the function ability of the load switch as not given when the capacitor voltage is greater than or equal to the threshold voltage.

Description

Technical field [0001] The present invention relates to a method for identifying the function of a load switch of a battery and a battery having a device for identifying the function of a load switch of the battery. Background technique [0002] In hybrid vehicles and electric vehicles, the battery or battery pack is connected to other components such as a drive, a backup generator, and a charging plug through a power protection device. These components are often fed by a device that generates single-phase or multi-phase AC voltage or pulsed DC voltage from the battery voltage of the battery. Due to the load spikes generated here, this device is equipped with an energy storage device. The energy storage device is usually a capacitor. The capacitance of the capacitor can take a considerable value. [0003] If one of the components is switched on, the capacitor must first be charged. Only then can the component run. The charging of this circuit is usually realized with load resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCB60L3/0069G01R31/006G01R31/3278G01R31/327G01R31/36
Inventor J·萨尔齐格
Owner ROBERT BOSCH GMBH