source:Industry News
release time:2023-02-17
Hits:0
Popular:
Pre -heating of lithium batteries is one of the effective ways to solve the problem of low temperature characteristics of lithium batteries. The use of lithium battery's own power to provide power supply for heating equipment is a commonly used battery heating method, but this method will consume a considerable part of the battery energy during the heating process, which will reduce the effective capacity of lithium battery discharge to a certain extent. Common lithium battery low temperature heating technology is divided into two types: external heating and internal heating. Let's introduce these two lithium battery low temperature heating technology. External heating methods include air heating, liquid heating, phase -changing material heating, and heat resistance heating device or heat pump heating. These heating methods are generally located in the battery pack, or in a container that is set in a thermal circulation medium. The internal heating method heating the battery is to motivate the internal electrochemical substances inside the battery through AC current, so that the battery itself generates heat.
1. External heating
Regarding the use of air to heat, some researchers used the battery to conduct experiments with a set of atmospheric simulation systems. The experimental results showed that compared to batteries exposed in low -temperature environments, the surrounding air was heated to release more capacity.
Compared with air heating, liquid heating has a better heating rate and higher thermal conversion efficiency. However, liquid heating requires more complicated heating systems. There are many practical cases in the application of liquid heating in electric vehicles and hybrid vehicles. For example: In the Chevrolet Volt car, heating surrounding the battery pack heating solution is heated by a 360V heater.
The heating battery of phase -changing materials has also been used. When the battery temperature drops to the phase change temperature point of the phase transformer material, the heat stored in the phase transformer material will be released to keep the ambient temperature constant, that is, pass the calories to the battery pack. The main advantage of phase -changing materials is that it can be used in an environment with a faster temperature change.
2. Internal heating
Communication inspiration heating. Compared with external heating, another commonly used heating method, the structural design will be relatively simple, that is, heating batteries through the transformer current. It does not need to be designed with heat transfer structure, but only loads a certain frequency of communication and incentives in the positive and negative electrode of the battery. The incentive effect is on the electrochemical substance inside the battery, which is equivalent to the effect of reciprocating and discharging discharge.
Compared with DC heating current, the AC current or positive square wave current can heated the battery during the discharge and charging cycle, so that the battery temperature will rise, and the battery loading status (SOC) is basically unchanged. Due to these characteristics, the internal warm -up method has become a field of more research. In 2004, a foreign researcher was the first to propose to use the current transformer current to heated directly to the lithium ion battery, and only use the resistance effect of the battery to produce heat. They did some tests of different batteries in different SOC states and different temperatures (-20 ° C ~ 40 ° C). The test results show that under a certain multiplier current, all batteries will produce heat quickly.
Read recommendations:
14650 Lithium Ion Battery for Electric Toothbrush
The Excellence of LG 18650 Lithium-Ion Batteries: Powering Modern Devices
12V modular iron phosphate battery.lithium ion golf cart batteries
Last article:Balanced principle of battery pack
Next article:Advantages of Ni-MH battery
related suggestion
lithium batteries for solar panels wholesale
2023-03-20lithium batteries for boats Vendor
2023-03-22lithium batteries for boats wholesale
2023-03-22solar power storage wholesale
2023-03-20lithium boat batteries
2023-03-22lithium batteries for boats Production
2023-03-2212v deep cycle battery
2023-05-08trolling motor battery
2023-05-0848 volt golf cart batteries
2023-05-0824 volt marine battery
2023-05-08portable power station solar
2023-05-0824v deep cycle battery
2023-05-08Marine Boat 12V 24V 36V Deep Cycle RV Lithium LiFePo4 Battery for Trolling Motor
2022-09-30Home Energy Storage System 51.2V 150Ah LiFePo4 Battery Pack
2023-06-19Golf Cart 51.2V 105Ah LiFePo4 Battery Pack IP67 Waterproof with Bluetooth
2022-09-2912V 150Ah 200Ah LiFePo4 Motive Battery Pack for Clean Car Electric Vehicle
2023-02-1412V 200Ah LiFePo4 Battery Pack Prismatic Cell 4000 Cycles Lithium Ion IP65 200A Discharge for Trolling Motor Golf Cart
2025-02-28Can a Solar Generator Run a Space Heater? An Expert’s Guide
2022-09-08Selecting the Right 12V Lithium Battery for Industrial and Mobility Applications
2025-03-14The Versatility and Reliability of 12V 100Ah AGM Batteries: A Comprehensive Overview
2025-03-18Choosing the Right 12 Volt Battery for Your Electric Scooter
2025-03-14Understanding Battery Specifications: The 153-5710 and 153-5656 Models
2025-03-18Precautions for drone batteries.lithium batteries for solar panels manufacturer
2023-03-27What is a high Lithium battery
2023-06-15What are the advantages of ternary lithium batteries?lithium trolling motor battery
2023-06-26UAV intelligent battery knowledge popularization
2023-02-03How much do you know about lithium battery?portable power station with solar panel
2023-06-05