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Parallel connection device suitable for multi-channel direct-current power supply

A DC power supply, multi-channel technology, applied in circuit devices, battery circuit devices, measurement devices, etc., can solve the problem of time-consuming and labor-intensive parallel connection of multi-channel power supplies, and achieve the effect of avoiding poor contact, simple and convenient operation, and reducing complexity.

Pending Publication Date: 2022-03-04
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the current problem of time-consuming and labor-intensive parallel connection of multi-channel power supplies during lithium battery testing, the present invention provides a parallel device suitable for multi-channel DC power supplies. The specific scheme is as follows:

Method used

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  • Parallel connection device suitable for multi-channel direct-current power supply
  • Parallel connection device suitable for multi-channel direct-current power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: when the current intensity I of a test channel 1 When the charging and discharging requirements of the battery pack can be met, switch the double-pole double-throw switch 2 on the test channel on the parallel device to the single-channel output terminal, and then electrically connect the single-channel output terminals to the high-rate charging and discharging terminals respectively. On the positive and negative poles of the battery pack, at this time, the total output is a single channel, and the output current is I 1 , which is consistent with the current of the input DC power supply.

Embodiment 2

[0026] Embodiment two: when the sum of the current intensity of two test channels can satisfy the charging and discharging demand to battery pack, the current intensity on each channel is respectively 1 1 and I 2 , the two output terminals of the contactor 3 are electrically connected to the positive and negative poles of the battery pack requiring high-rate charge and discharge, and the two double-pole double-throw switches 2 on the two test channels are controlled on the parallel device. switch to the multi-channel output respectively, then the total output is dual-channel, and the output current is I 1 +I 2 .

Embodiment 3

[0027] Embodiment three: when the sum of the current intensity of n (n>2) test channels can satisfy the charging and discharging demand to battery pack, the current intensity on every channel is different, is respectively I 1 , I 2 ,..., I n , the two output terminals of the contactor 3 are electrically connected to the positive and negative poles of the battery pack requiring high-rate charge and discharge, and the n double-pole double-throw switches on the n test channels are controlled on the parallel device respectively. Switch to the multi-channel output terminal, then the total output is n channels, and the output current is I 1 +I 2 +…+I n .

[0028]The parallel device of the present invention can realize factory batch production, avoiding various uncertainties such as poor contact or excessive heat generation during the manual wiring process. Set respectively on the positive and negative terminals of the converter 1, tighten the fixing nut 104 and cover the cover ...

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Abstract

The invention discloses a parallel connection device suitable for a multi-channel direct-current power supply. The parallel connection device comprises a plurality of test channels and a parallel connection device, each test channel comprises a direct-current power supply; the parallel connection device comprises a plurality of converters, a plurality of double-pole double-throw switches and two contactors; the double-pole double-throw switch comprises a positive input pin, a negative input pin, a multi-channel positive output pin, a multi-channel negative output pin, a single-channel positive output pin and a single-channel negative output pin; positive and negative leads of the direct-current power supply are respectively connected with the positive binding post and the negative binding post; the positive binding post is electrically connected to the positive input pin, and the negative binding post is electrically connected to the negative input pin; the multi-channel positive output pin is electrically connected with the input end of one contactor; the multi-channel negative output pin is electrically connected with the input end of the other contactor; according to the parallel connection device, factory-like batch production can be achieved, universality is high, operation is easy and convenient, complexity of parallel connection operation of a traditional multi-channel direct-current power source is greatly reduced, and a large amount of manual wiring time is saved.

Description

technical field [0001] The invention relates to the field of lithium battery testing, in particular to a multi-channel DC power parallel connection device. Background technique [0002] Due to the low voltage and small capacity of the single battery, the battery pack in the electric vehicle or energy storage system is often composed of a large number of single batteries connected in series and parallel to form a module, and the module is then combined in series and parallel to form a battery pack . Due to the different combinations of series and parallel of battery modules or battery packs, the total voltage and allowable current are different. When performing high-rate charge and discharge, it is easy for the current intensity of the test channel to fail to meet the requirements. At present, when such phenomena occur in laboratory tests, different test channels in the test cabinet are often connected in parallel to achieve high current output. [0003] When high-rate cha...

Claims

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Application Information

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IPC IPC(8): H02J7/34G01R31/396
CPCH02J7/34G01R31/396
Inventor 麻姗姗杨刘倩侯璟玥
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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