Device and method of detecting precharge function of battery pack

A function detection and battery pack technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of easy outflow, high-voltage components not working normally, easy to miss test items, etc., and achieve good automatic detection effect

Active Publication Date: 2019-09-10
SVOLT ENERGY TECHNOLOGY CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The motor controller of the electric vehicle has a large capacitance in front of the load. During cold start, there is no charge on the capacitor or only a low residual voltage. Inrush current, this inrush current will cause damage to the high-voltage components, causing the high-voltage components to not work normally. The package needs to add a pre-charge function when designing, and the capacitor is pre-charged first when it is powered on
[0003] Existing equipment cannot detect whether the pre-charging resistance value during the assembly

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method of detecting precharge function of battery pack
  • Device and method of detecting precharge function of battery pack
  • Device and method of detecting precharge function of battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0037] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0038] figure 1 It is a schematic structural diagram of a battery pack pre-charging function detection device provided by an embodiment of the present invention. Such as figure 1 As shown, the pre-charging function detection device of the battery pack 1 includes: a test unit 2 and a control unit 3, wherein the control unit 3 is used to connect the test unit 2 to both ends of the battery pack 1 to The battery pack 1 is made to precharge the test unit 2, and when the precharging completion time is less than or equal to a preset value, it is judged that the precharging function of the battery pack 1 is normal.

[0039] The control unit 3 of the present invention controls the test u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to the field of electric vehicles and provides a device and a method of detecting a precharge function of a battery pack. The device of detecting the precharge function of the battery pack in the present invention comprises: a test unit and a control unit, wherein the control unit is used for connecting the test unit to two ends of the battery pack, such that the battery pack precharges the test unit; and when the time of completing the precharge is smaller than or equal to a preset value, determining that the precharge function of the battery pack is normal. Thepresent invention can automatically detect the precharge function of the battery pack well.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a battery pack pre-charging function detection device and method. Background technique [0002] The motor controller of the electric vehicle has a large capacitance in front of the load. During cold start, there is no charge on the capacitor or only a low residual voltage. Inrush current, this inrush current will cause damage to the high-voltage components, causing the high-voltage components to not work normally. The package needs to add a pre-charge function during design, and the capacitor is pre-charged before power-on. [0003] Existing equipment cannot detect whether the pre-charging resistance value during the assembly process is correct during the battery pack off-line testing process. The status of the pre-charging relay, main positive and main negative relays needs to be manually closed to detect whether there is an adhesion fault, and the test time is long. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R31/385
CPCG01R31/3865
Inventor 魏海潮阳飞
Owner SVOLT ENERGY TECHNOLOGY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap