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Air-cooled soft-packed power battery box for locomotives

A power battery and air-cooling technology, applied in batteries, secondary batteries, battery pack components, etc., can solve the problems of increased weight, complex structure, poor thermal conductivity, etc., to reduce uneven current distribution, uniform temperature distribution, and structural Simple and compact effect

Pending Publication Date: 2019-08-30
CRRC ZIYANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, due to the large number of soft-pack power battery boxes used in locomotives, the cooling of the batteries is carried out by means of water-cooled tubes to remove the heat generated during use from the surface of the batteries. structure, and the thermal conductivity of the separator is relatively poor, resulting in relatively poor thermal conductivity in the vertical surface direction of the battery, resulting in poor heat dissipation of the battery, and a large temperature gradient inside the battery, resulting in uneven current distribution inside the battery. The capacity declines faster in the cycle, which reduces the cycle life of the battery
At the same time, the battery needs to add heat-conducting aluminum or copper fins, as well as water-cooled substrates and water piping systems. The structure is complex, the weight increases, and there is a risk of battery damage caused by coolant leakage.

Method used

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  • Air-cooled soft-packed power battery box for locomotives
  • Air-cooled soft-packed power battery box for locomotives
  • Air-cooled soft-packed power battery box for locomotives

Examples

Experimental program
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Effect test

Embodiment 1

[0040] like figure 1As shown, in this embodiment, an air-cooled soft pack power battery box for a locomotive is specifically provided, which includes a battery box 5, and the battery box 5 is divided into three independent heat dissipation frames by a heat insulating wall 3 , one end port of each heat dissipation frame is sealed with an insulating sealing plate 8, and an air inlet is provided on the insulating sealing plate 8, the air inlet is composed of a plurality of air inlet holes 16 arranged in the same direction, and the other The opposite end is provided with an air outlet, through which the cooling air of the air source system is input to the cooling frame, and after heat exchange, it is discharged from the air outlet and returned to the air source system.

[0041] like figure 1 , figure 2 , image 3 As shown, three battery modules 2 are arranged in each heat dissipation frame, and the three battery modules 2 are assembled and fixed in a side-by-side manner, and t...

Embodiment 2

[0052] like Figure 8 As shown, on the basis of Embodiment 1, this embodiment specifically provides an air-cooled soft pack power battery box for locomotives, including four battery boxes 5, and the four battery boxes 5 are stacked in sequence along the same direction , combined into a power battery system with different power requirements. In this embodiment, four layers are stacked vertically, each layer is a battery box 5, and the air inlets and air outlets on two adjacent battery boxes 5 are connected to realize the interior of the entire power battery box. Constitute a through heat dissipation channel.

[0053] like Figure 9 As shown, each of the battery boxes 5 is provided with different numbers of air volume adjustment holes 17, and the multiple air volume adjustment holes 17 located on the same battery box 5 are divided into multiple groups, and the air volume adjustment holes 17 of each group They are respectively opened on the insulating sealing plates 8 of the b...

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Abstract

The invention discloses an air-cooled soft-packed power battery box for locomotives, which belongs to the technical field of rail transit. A battery box body is divided by heat insulation walls into multiple independent heat dissipation frames. Each heat dissipation frame is provided with an insulating sealing plate at one end, an air inlet is arranged on each insulating sealing plate, and air outlets are arranged at the other end. Each heat dissipation frame is internally provided with at least one battery module. Tab air ducts are formed between the tops of the battery modules and the insulating sealing plates. Gaps are reserved and side air ducts are formed on the two sides of the battery modules. Each battery module includes several brackets, a battery core is clamped between every twoadjacent brackets, and the sides of the battery cores and the battery tabs are exposed in the side air ducts and the tab air ducts. Thus, the heat dissipation effect of the battery is improved, the temperature distribution inside the battery is more uniform, non-uniform current distribution inside the battery is reduced, and the cycle life of the battery is increased. At the same time, the air-cooled soft-packed power battery box for locomotives is simple and compact in structure, light and safe in use.

Description

technical field [0001] The invention belongs to the technical field of hybrid locomotives and new energy locomotives in rail transit, and in particular relates to an air-cooled soft pack power battery box for locomotives. Background technique [0002] At present, due to the large number of soft-pack power battery boxes used in locomotives, the cooling of the batteries is carried out by means of water-cooled tubes to remove the heat generated during use from the surface of the batteries. structure, and the thermal conductivity of the separator is relatively poor, resulting in relatively poor thermal conductivity in the vertical surface direction of the battery, resulting in poor heat dissipation of the battery, and a large temperature gradient inside the battery, resulting in uneven current distribution inside the battery. The capacity declines faster in the cycle, which reduces the cycle life of the battery. At the same time, the battery needs to add heat-conducting aluminu...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M10/613H01M10/615H01M10/617H01M10/625H01M10/6556H01M10/6557H01M10/6563B60L58/26
CPCH01M10/613H01M10/615H01M10/617H01M10/625H01M10/6556H01M10/6557H01M10/6563B60L58/26H01M2220/20H01M50/20Y02T10/70Y02E60/10
Inventor 牟俊彦石小佛张志鸿徐华胡利航王平华李廉枫孟玉发彭长福
Owner CRRC ZIYANG CO LTD
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