Device and method for verifying insulation monitoring accuracy and leakage protection of battery pack management system

A management system and insulation monitoring technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problem that there is no unified insulation monitoring accuracy error range, and there is no verification of the battery management system accuracy. , There is no specific requirements and inspection methods to achieve the effect of verification accuracy

Inactive Publication Date: 2016-01-20
BEIJING SHANXIN DINGZHONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no uniform error range of insulation monitoring accuracy, and the detection of insulation leakage is tested by simulating or changing the insulation threshold without a battery pack
However, battery pack manufacturers only use insulation testing equipment to verify the insulation of battery packs, and have not verified the accuracy of the battery management system and the function of the battery management system to alarm and cut off the relay when the battery pack leaks.
Therefore, there is no specific requirement and test method for the test in this area.

Method used

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  • Device and method for verifying insulation monitoring accuracy and leakage protection of battery pack management system
  • Device and method for verifying insulation monitoring accuracy and leakage protection of battery pack management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] like figure 2 As shown, a device for verifying the insulation monitoring accuracy and leakage protection of the battery pack management system is used to verify the insulation monitoring accuracy of the battery pack 1 detected by the battery pack management system, and then evaluate its leakage protection, including the first single-throw switch K1 , the first single-throw switch K2, the double-throw switch K3, the rheostat box 2, the ammeter 3 and the insurance 4;

[0038] The connection mode of the circuit is that the rheostat box 2, the ammeter 3 and the insurance 4 are connected in series. Specifically, one end of the rheostat box 2 is connected in series with the ammeter 3 and the other end is connected to the moving end c of the double-throw switch K3; the first fixed end a of the double-throw switch K3 The positive pole of the battery pack 1 is connected to the first wire harness 5 through the first single-throw switch K1 in turn; the second fixed end b of the d...

Embodiment 2

[0045] A method for verifying the insulation monitoring accuracy and leakage protection of a battery pack management system, the steps comprising:

[0046] Step 1, connect the circuit according to the content described in Embodiment 1, and ensure that the circuit connection is intact and there is no disconnection phenomenon;

[0047] The concrete method of described step 1 comprises:

[0048] Take a multimeter, adjust it to the resistance level, clamp the positive and negative needles of the multimeter to the first wire harness 5 and the third wire harness 7 respectively, close the first single-throw switch K1, and close the double-throw switch K3 to the first non-moving end a; compare Whether the value displayed on the multimeter is consistent with the resistance adjusted by the rheostat box 2, if the multimeter has no display, it means that the circuit is broken, and the circuit needs to be checked and reconnected;

[0049] Then clamp the positive and negative hands of the ...

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Abstract

The invention discloses a device and a method for verifying insulation monitoring accuracy and leakage protection of a battery pack management system, which are used for verifying insulation monitoring accuracy of a detected battery pack (1) of the battery pack management system. The device comprises a first single-throw switch (K1), a second single-throw switch (K2), a double-throw switch (K3), a variable resistance box (2), an ammeter (3) and a fuse (4), wherein one end of the variable resistance box (2) is connected with the ammeter (3) in series, and the other end is connected with a movable end (c) of the double-throw switch (K3); a first fixed end (a) of the double-throw switch (K3) is connected with a positive electrode of the battery pack (1) through the first single-throw switch (K1) and the first wire harness (5) in sequence; a second fixed end (b) of the double-throw switch (K3) is connected with a negative electrode of the battery pack (1) through the second single-throw switch (K2) and a second wire harness (6) in sequence; and one end of the fuse (4) is connected with the ammeter (3) in series, and the other end is connected a shell body of the battery pack (1) through a third wire harness (7). The device and the method can be used for verifying accuracy of the battery pack management system, and the battery pack management system alarms when an insulation problem of the battery pack occurs, thereby protecting the battery pack, and standardizing the insulation testing method of the battery pack management system.

Description

technical field [0001] This patent relates to the technical field of electronics and safety testing and certification, in particular to a device and testing method for verifying the insulation monitoring accuracy and leakage protection of a battery pack management system. Background technique [0002] The battery pack management system (BMS) is a bridge between the lithium battery in the battery pack and the outside world. Through numerous monitoring circuits and control circuits, sensors and measuring devices connected to the battery pack and internal battery cells, the BMS can collect, process, and store data in real time. Important information during the operation of the battery pack, and exchange information with external devices such as vehicle controllers or grid energy storage hosts, to solve key issues such as safety, availability, and service life in lithium battery systems. [0003] In addition to the basic functions of total voltage collection, battery cell voltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R35/00
Inventor 詹天佑陈世强
Owner BEIJING SHANXIN DINGZHONG TECH
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