Mobile rechargeable battery of new energy automobile

A new energy vehicle and mobile charging technology, applied in the direction of non-aqueous electrolyte batteries, secondary batteries, battery electrodes, etc., can solve problems such as explosions, hidden safety hazards, abnormal discharge, etc., and achieve low stacking density, guaranteed safety, The effect of reducing the internal resistance of the electrode

Pending Publication Date: 2021-11-05
柴同明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion batteries are highly sensitive to temperature during use, and the capacity will decrease after long-term use, which poses a certain safety hazard and may even cause an explosion
During the working process of the power battery, frequent charging and discharging will cause the battery temperature to be too high. Due to the small space where the battery is located, the heat is difficult to dissipate, which will form heat accumulation, which will cause the temperature of the battery to rise, and the temperature will affect the battery. Such as battery capacity, cycle life, charge and discharge current, etc., which affect the output and input of battery power and the safety performance of the battery; Therefore, the effective control of the battery temperature is very important to its working efficiency and safety performance. When the power battery is working, the temperature of the battery cells at the inner center is high, while the temperature of the battery cells at the edge is suitable. In this case, the temperature consistency of the power battery will decrease, which will affect the performance and life of the battery.

Method used

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  • Mobile rechargeable battery of new energy automobile
  • Mobile rechargeable battery of new energy automobile
  • Mobile rechargeable battery of new energy automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] combine Figure 1-4, a new energy vehicle mobile rechargeable battery, including a battery pack 10 and a battery pack 20 located in the battery pack 10, the battery pack 10 includes a matching upper case 11 and a lower case 12, the upper case 11 and the lower case The box body 12 is sealed and connected, and the two side plates 21 and the middle plate 22 of the battery pack 20 are provided with liquid cooling plates 23, and the gaps between the single cells of the battery pack 20 are filled with cooling medium, and the side plates 21 And the middle plate 22 adopts a frame structure, and the periphery of the liquid cooling plate 23 is fixed in the frame structure of the side plate 21 and the middle plate 22 .

[0036] The inner bottom of the lower box body 12 is provided with a circulating water channel 30 communicating with the liquid cold plate 23, and the lower box body 12 is provided with a liquid inlet 15 and a liquid outlet port 16 communicating with the circulatin...

Embodiment 2

[0041] The circulating water channel adopts a U-shaped pipe, and the liquid cold plate and the U-shaped pipe are filled with an aqueous solution of ethylene glycol, which is a mixture of 50% of water and ethylene glycol solution. The density of the aqueous solution, ρ 1 1060-1088kg / m 3 , specific heat capacity C 1 3126-3362 kg -1 k -1 , thermal conductivity λ 1 0.32-0.41W·m -1 k -1 , dynamic viscosity μ 1 It is 2.2-22.5pa·s.

[0042] The Reynolds number Re of the ethylene glycol aqueous solution in the liquid cold plate and the circulating water channel satisfies: Re=ρ 1 vL / μ 1 , where v is the average velocity of the section (m / s), and L is the characteristic length (m).

[0043] Both the liquid cold plate and the circulating water channel are made of aluminum, and the aluminum material has a density ρ 2 2564-2731kg / m 3 , specific heat capacity C 2 198-253J·kg -1 k -1 , thermal conductivity λ 2 855-964W·m -1 k -1 , and ρ 2 (C 2 +λ 2 ) / (λ 2 -C 2 ) is gre...

Embodiment 3

[0046] The single battery of the battery pack 20 is a lithium battery, and the negative electrode of the lithium battery adopts a nickel oxide nanoparticle / carbon nano helmet composite material, and the preparation of the composite material includes the following steps:

[0047] S1. Preparation of SiO 2 For nanospheres, mix 63.3ml of isopropanol with 23.5ml of ultrapure water and 13ml of ammonia water and stir evenly, add 0.6ml of tetraethyl orthosilicate, stir at room temperature for 60 minutes, then add dropwise 5ml of tetraethyl orthosilicate, and stir for 2 hours at 35°C , the product was centrifuged, washed with water and alcohol three times, and vacuum-dried at 70°C for 10 hours to obtain SiO2 balls;

[0048] S2, by sol-gel method on SiO 2 The ball is covered with phenolic resin coating (RF) to form RF / SiO 2 , the 1gSiO 2 Add 70ml of water and 28ml of ethanol to the sphere for ultrasonic dispersion for 30min, add 2.3g of cetyltrimethylammonium bromide (CTAB), 0.35g of...

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Abstract

The invention relates to a mobile rechargeable battery of a new energy automobile. The mobile rechargeable battery comprises a battery pack and a battery assembly arranged in the battery pack; liquid cooling plates are arranged on two side plates and a middle plate of the battery assembly; gaps between single batteries of the battery assembly are filled with cooling media; the battery pack comprises an upper box body and a lower box body which are matched with each other; and a circulating water channel communicated with the liquid cooling plates is arranged at the bottom end in the lower box body, a liquid inlet and a liquid outlet which are communicated with the circulating water channel are formed in the lower box body, and convection fans are arranged on the side walls of the two ends of the lower box body. According to the rechargeable battery provided by the invention, the mode of combining the pipeline and the battery pack is adopted, so that the space is saved, and the cooling effect is enhanced.

Description

technical field [0001] The invention belongs to the technical field of new energy batteries, and in particular relates to a mobile rechargeable battery for new energy vehicles. Background technique [0002] New energy vehicles refer to vehicles using new power, mainly including pure electric vehicles, hybrid vehicles, fuel cell vehicles, etc., which have the advantages of zero emission and no pollution. The power battery is also called a secondary battery. Performing a reversible electrochemical reaction, it can continuously release and store electrical energy. As the power source of electric vehicles, power batteries are divided into batteries and fuel cells. Batteries mainly include lithium-ion batteries, lead-acid batteries, nickel-metal hydride batteries, lithium polymer batteries Batteries, among which the composition of lithium-ion batteries mainly includes positive and negative electrode materials, electrolyte, and battery diaphragm. At present, lithium manganate, ter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/6554H01M10/6556H01M10/6563H01M10/6568H01M50/258H01M50/249H01M50/244H01M50/204H01M4/52H01M4/62H01M10/052
CPCH01M10/613H01M10/625H01M10/6554H01M10/6556H01M10/6563H01M10/6568H01M50/258H01M50/249H01M50/244H01M50/204H01M4/523H01M4/625H01M10/052H01M2004/021H01M2004/027Y02E60/10
Inventor 柴同明
Owner 柴同明
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