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Parallel battery pack control method and system, electronic equipment and vehicle

A control method and technology of electronic equipment, applied in the control of parallel battery packs, the control system of parallel battery packs, and the field of vehicles, can solve the problems that lithium battery packs cannot be connected in parallel, use in parallel, and it is difficult to use multiple lithium battery packs, etc., to achieve Ease of deployment and implementation

Active Publication Date: 2021-04-02
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when trying to use lithium battery packs in parallel, due to the existence of the battery management system, lithium battery packs cannot be directly connected in parallel like lead-acid batteries, and it is difficult to use multiple lithium battery packs in parallel. Therefore, multiple lithium battery packs are required. The implementation scheme of using battery packs in parallel

Method used

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  • Parallel battery pack control method and system, electronic equipment and vehicle
  • Parallel battery pack control method and system, electronic equipment and vehicle
  • Parallel battery pack control method and system, electronic equipment and vehicle

Examples

Experimental program
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Embodiment 1

[0055] An embodiment of the present invention provides a control method for parallel battery packs. The control method includes:

[0056] S1) Determine the main control unit corresponding to the battery management system of the parallel battery pack, wherein the battery management system not determined as the main control unit is determined as the slave unit of the main control unit;

[0057] S2) Feed back the branch detection data of the battery pack corresponding to the first battery management system to the main control unit, wherein the branch detection data includes the branch current of the battery pack corresponding to the first battery management system , the first battery management system may be one or more battery management systems;

[0058] S3) Receive the control instruction sent by the main control unit through the second battery management system, wherein the control instruction is determined by the main control unit through the branch detection data, the first...

Embodiment 2

[0075] The embodiment of the present invention and embodiment 1 belong to the same inventive concept. The embodiment of the present invention provides a control system for parallel battery packs. The control system includes:

[0076] A master control determining module, configured to determine a master control unit corresponding to a battery management system of a battery pack connected in parallel, wherein the battery management system not determined as the master control unit is determined as a slave unit of the master control unit;

[0077] A data feedback module, configured to feed back branch detection data of the battery pack corresponding to the first battery management system to the main control unit, wherein the branch detection data includes the battery pack corresponding to the first battery management system branch current;

[0078] A data receiving module, configured to receive a control instruction issued by the main control unit through the second battery manage...

Embodiment 3

[0082] The embodiment of the present invention belongs to the same inventive concept as Embodiments 1 and 2. The embodiment of the present invention provides a power supply device, the power supply device includes a parallel battery pack, and the parallel battery pack forms a main circuit with a load device or a charging device. The parallel battery pack includes a plurality of battery packs, each battery pack is in a branch, and a battery module, a discharge switch and a charge switch are connected in series on the branch, and the discharge switch is also connected in parallel with the first trigger diode and the first trigger diode The anode of a trigger diode is connected to the cathode of the battery module, the charge switch is also connected in parallel with the second trigger diode and the cathode of the second trigger diode is connected to the cathode of the first trigger diode; the discharge switch , the charging switch, the first trigger diode and the second trigger d...

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Abstract

The invention provides a parallel battery pack control method and system, electronic equipment and a vehicle, and belongs to the technical field of batteries. The method comprises the following steps:determining a main control unit corresponding to a battery management system of a parallel battery pack; feeding back the branch detection data of the battery pack corresponding to a first battery management system to the main control unit; receiving a control instruction sent by the main control unit through a second battery management system, wherein the control instruction is determined by themain control unit through the branch detection data, and both the first battery management system and the second battery management system are determined as slave units; and according to the controlinstruction, making a battery pack corresponding to the second battery management system be added into or withdrawn from a main loop, wherein the main loop comprises the parallel battery pack and loadequipment, or the main loop comprises the parallel battery pack and charging equipment. The method can be used for parallel connection of the lithium battery packs.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a control method for parallel battery packs, a control system for parallel battery packs, an electronic device and a vehicle. Background technique [0002] With the continuous improvement of living standards, hybrid or electric vehicles such as RVs and minivans are gradually being purchased for people's use needs. As a vehicle mainly used for outdoor life or long-distance running, backup power is particularly important, such as RVs, the demand for backup power is increasing, and it is difficult for lead-acid batteries to meet the demand. People are beginning to focus on lithium batteries with higher energy density. . Lithium batteries usually need to be used with a battery management system (Battery Management System, BMS). The battery management system can monitor battery voltage, temperature, current and other parameters, and perform protection based on these data, s...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/0029H02J7/00302H02J7/00306H02J7/0019H02J7/00304H02J7/00308H02J7/00309
Inventor 杨逊王君生谈作伟汤胤博李庆
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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