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Heat balance management device for power battery pack and management method of heat balance management device

A power battery pack and management device technology, applied in secondary batteries, battery temperature control, secondary battery repair/maintenance, etc., can solve problems affecting battery life, safety hazards, low efficiency, etc.

Inactive Publication Date: 2015-11-18
江西尚立动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the power lithium-ion batteries used in new energy electric vehicles, whether it is lithium iron phosphate, lithium manganate or ternary lithium batteries, have poor safety performance at high temperatures, and charging at low temperatures is not only inefficient but also affects Battery life, on the contrary charging at high temperature will also cause safety hazards

Method used

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  • Heat balance management device for power battery pack and management method of heat balance management device
  • Heat balance management device for power battery pack and management method of heat balance management device
  • Heat balance management device for power battery pack and management method of heat balance management device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] When the electric vehicle is charging and the outdoor air temperature is too low, the temperature sensor 31 detects the temperature inside the battery box 1, and when the temperature inside the battery box 1 is 5°C, the vehicle charging heating method is adopted:

[0084] Step 1: The temperature sensor 31 feeds back the detected temperature data inside the battery case 1 to the battery management system 12;

[0085] Step 2: Process the temperature data fed back to the battery management system 12 as described in step 1, and check that the communication module 35 of the charging device 9 has no fault signal fed back to the battery management system 12. At this time, the charging device 9 is operating normally;

[0086] Step 3: When the charging device 9 described in Step 2 operates normally, the battery management system 12 closes the switch of the fifth relay switch 32 by controlling the coil in the fifth relay switch 32;

[0087] Step 4: After the switch of the fifth r...

Embodiment 2

[0092] When the electric vehicle is charging and the outdoor air temperature is too low, the temperature sensor 31 detects the temperature inside the battery box 1, and when the temperature inside the battery box 1 is 3°C, the vehicle charging heating method is adopted:

[0093] Step 1: The temperature sensor 31 feeds back the detected temperature data inside the battery case 1 to the battery management system 12;

[0094] Step 2: Process the temperature data fed back to the battery management system 12 as described in step 1, and check that the communication module 35 of the charging device 9 has no fault signal fed back to the battery management system 12. At this time, the charging device 9 is operating normally;

[0095] Step 3: When the charging device 9 described in Step 2 operates normally, the battery management system 12 closes the switch of the fifth relay switch 32 by controlling the coil in the fifth relay switch 32;

[0096] Step 4: After the switch of the fifth r...

Embodiment 3

[0101]When the electric vehicle runs for a long time, the temperature sensor 31 detects the temperature inside the battery box 1, and when the temperature inside the battery box 1 is 40°C, the cooling method of the vehicle running is adopted:

[0102] Step 1: The temperature sensor 31 feeds back the detected temperature data inside the battery case 1 to the battery management system 12;

[0103] Step 2: Process the temperature data fed back to the battery management system 12 in step 1 and feed it back to the vehicle controller 13. The vehicle controller 13 controls the coil of the first normally closed electromagnetic valve 37 and the second normally closed solenoid valve 37. The coil of the electromagnetic valve 38 opens the first normally closed electromagnetic valve 37 and the second normally closed electromagnetic valve 38, and then the vehicle controller 13 closes the switch of the first relay switch 10 by controlling the coil of the first relay switch 10;

[0104] Step ...

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Abstract

The invention belongs to a heat balance management device for a power battery pack and a management method of the heat balance management device. The heat balance management device comprises a power battery pack device and a power battery pack management system, wherein the power battery pack device comprises a battery box body, a storage liquid cooling device, a water suction pump and vehicle low-voltage power supply; a battery pack and a cooling device are arranged in the battery box body; the power battery pack management system comprises a humidity sensor and a temperature sensor, which are arranged in the battery box body; a communication module is arranged in charging equipment; the humidity sensor, the temperature sensor and the communication module are respectively connected with a battery management system; and the battery management system is connected with a whole vehicle controller. The heat balance management device has the advantages of simple structure, reasonable design and high controllability; and the safe service environment of the battery pack can be effectively and reliably ensured to prolong the service life; therefore, the safety and the reliability of an electric automobile are improved; the application range is expanded; and the endurance mileage is ensured.

Description

technical field [0001] The invention belongs to the technical field of battery pack heat balance, and in particular relates to a power battery pack heat balance management device and a management method thereof. Background technique [0002] At present, the power lithium-ion batteries used in new energy electric vehicles, whether it is lithium iron phosphate, lithium manganese oxide or ternary lithium batteries, have poor safety performance at high temperatures, and charging at low temperatures is not only inefficient but also affects Battery life, on the contrary charging at high temperature will also cause safety hazards. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and provide an effective and reliable environment to ensure the safe use of battery packs and improve the service life, thereby improving the safety and reliability of electric vehicles, expanding the scope of application, and ensuring A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/65H01M10/625H01M10/655H01M10/6567H01M10/6571
CPCH01M10/42Y02E60/10
Inventor 李正广张长虹何青林娄飞鹏
Owner 江西尚立动力科技有限公司
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