CN110085941A - A kind of radiator structure for cylindrical lithium battery group - Google Patents
A kind of radiator structure for cylindrical lithium battery group Download PDFInfo
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- CN110085941A CN110085941A CN201910269036.2A CN201910269036A CN110085941A CN 110085941 A CN110085941 A CN 110085941A CN 201910269036 A CN201910269036 A CN 201910269036A CN 110085941 A CN110085941 A CN 110085941A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
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Abstract
本发明公开一种用于圆柱型锂电池组的散热结构，包括圆柱电池、平板热管、弧形导热铝片和散热片，所述弧形导热铝片包括弧形部分和平面部分，弧形部分的弧度与圆柱电池侧面外表面的弧度相同，圆柱电池放置于弧形导热铝片的弧形部分之中，平板热管的一端与弧形导热铝片的平面部分接触，平板热管的另一端与散热片接触。本发明采用弧形导热铝片紧密贴合圆柱电池的外表面，增大圆柱电池与弧形导热铝片的接触面积，弧形导热铝片通过平板热管将热量传导到散热片上，提高了导热效率，本发明利用了热管的高导热性将热量传导到热管另一端的散热片上，及时散发热量。
The invention discloses a heat dissipation structure for a cylindrical lithium battery pack, comprising a cylindrical battery, a flat heat pipe, an arc-shaped heat-conducting aluminum sheet and a heat sink, the arc-shaped heat-conducting aluminum sheet includes an arc portion and a plane portion, and the arc portion The arc of the cylindrical battery is the same as that of the outer surface of the side of the cylindrical battery. The cylindrical battery is placed in the arc-shaped part of the arc-shaped heat-conducting aluminum sheet. One end of the flat heat pipe is in contact with the flat part of the arc-shaped heat-conducting aluminum sheet. sheet contact. In the present invention, the arc-shaped heat-conducting aluminum sheet is closely attached to the outer surface of the cylindrical battery, thereby increasing the contact area between the cylindrical battery and the arc-shaped heat-conducting aluminum sheet, and the arc-shaped heat-conducting aluminum sheet conducts heat to the heat sink through the flat heat pipe, thereby improving the heat conduction efficiency , the present invention utilizes the high thermal conductivity of the heat pipe to conduct heat to the heat sink at the other end of the heat pipe to dissipate heat in time.
Description
技术领域technical field
本发明涉及散热结构技术领域，特别涉及一种用于圆柱形锂电池组的散热结构。The invention relates to the technical field of heat dissipation structures, in particular to a heat dissipation structure for a cylindrical lithium battery pack.
背景技术Background technique
对于圆柱型锂电池组，因为有多个锂电池集聚，电池组内部容易有大量的热量堆积，导致圆柱型锂电池组的温度快速升高，而且加剧了锂电池组的温度分布不均衡性。在现有技术中，锂电池散热方式有风冷，液冷，相变冷却等几种。但风冷在大功率放电时无法满足温控要求，液冷设备沉重，耗能较大且有泄露风险，相变冷却受到相变材料的限制。而且圆柱型锂电池不能像方型电池一样进行没有缝隙的组合，所以已有方案在电池组空间利用率方面也存在缺陷。For cylindrical lithium battery packs, because there are multiple lithium batteries gathered, a large amount of heat is likely to accumulate inside the battery pack, resulting in a rapid rise in the temperature of the cylindrical lithium battery pack, and exacerbating the uneven temperature distribution of the lithium battery pack. In the prior art, there are several heat dissipation methods for lithium batteries, such as air cooling, liquid cooling, and phase change cooling. However, air cooling cannot meet the temperature control requirements during high-power discharge. Liquid cooling equipment is heavy, consumes a lot of energy and has a risk of leakage. Phase change cooling is limited by phase change materials. Moreover, cylindrical lithium batteries cannot be combined without gaps like square batteries, so existing solutions also have defects in terms of battery pack space utilization.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服现有技术的不足，提供一种用于圆柱形锂电池组的散热结构，能提高圆柱形锂电池组的散热效率，有利于圆柱形锂电池组内温度一致。The object of the present invention is to overcome the deficiencies of the prior art, and provide a heat dissipation structure for a cylindrical lithium battery pack, which can improve the heat dissipation efficiency of the cylindrical lithium battery pack, and is conducive to uniform temperature in the cylindrical lithium battery pack.
本发明的技术方案为：一种用于圆柱型锂电池组的散热结构，包括圆柱电池、平板热管、弧形导热铝片和散热片，所述弧形导热铝片包括弧形部分和平面部分，弧形部分的弧度与圆柱电池侧面外表面的弧度相同，圆柱电池放置于弧形导热铝片的弧形部分之中，平板热管的一端与弧形导热铝片的平面部分接触，平板热管的另一端与铝制的散热片接触，散热片的长度与平板热管的宽度相同，散热片的高度不大于相邻圆柱电池的间距。其中，铝制的散热片可以增大平板热管与空气的换热面积，一个平板热管上可与多个弧形导热铝片接触，平板热管可快速传导热量至散热片，弧形导热铝片均匀排列，每个弧形导热铝片上横向放置一个圆柱电池。The technical solution of the present invention is: a heat dissipation structure for a cylindrical lithium battery pack, including a cylindrical battery, a flat heat pipe, an arc-shaped heat-conducting aluminum sheet and a heat sink, and the arc-shaped heat-conducting aluminum sheet includes an arc portion and a plane portion , the arc of the arc part is the same as the arc of the outer surface of the side surface of the cylindrical battery, the cylindrical battery is placed in the arc part of the arc-shaped heat-conducting aluminum sheet, one end of the flat heat pipe is in contact with the plane part of the arc-shaped heat-conducting aluminum sheet, and the flat heat pipe The other end is in contact with the aluminum heat sink, the length of the heat sink is the same as the width of the flat heat pipe, and the height of the heat sink is not greater than the distance between adjacent cylindrical batteries. Among them, the aluminum heat sink can increase the heat exchange area between the flat heat pipe and the air. One flat heat pipe can be in contact with multiple arc-shaped heat-conducting aluminum sheets, and the flat heat pipe can quickly transfer heat to the heat sink. Arranged, a cylindrical battery is placed horizontally on each curved heat-conducting aluminum sheet.
所述圆柱电池外层包覆绝缘膜，圆柱电池的两端分别为正极耳和负极耳。The outer layer of the cylindrical battery is coated with an insulating film, and the two ends of the cylindrical battery are positive tabs and negative tabs respectively.
所述弧形导热铝片与圆柱电池之间还设有导热硅胶垫，导热硅胶垫与圆柱电池侧面紧密贴合。导热硅胶垫与圆柱电池和弧形导热铝片之间紧密贴合，增大接触面积，增强导热效果。A heat-conducting silica gel pad is also provided between the arc-shaped heat-conducting aluminum sheet and the cylindrical battery, and the heat-conducting silica gel pad is closely attached to the side of the cylindrical battery. The heat-conducting silicone pad is closely attached to the cylindrical battery and the arc-shaped heat-conducting aluminum sheet to increase the contact area and enhance the heat conduction effect.
所述平板热管是由微通道铝扁管抽真空之后，再向微通道铝扁管中加注冷却液制成的。The flat heat pipe is made by adding cooling liquid to the micro-channel aluminum flat tube after the micro-channel aluminum flat tube is evacuated.
所述圆柱电池与导热硅胶垫之间、导热硅胶垫与弧形导热铝片之间的配合均为过盈配合。The cooperation between the cylindrical battery and the heat-conducting silica gel pad, and between the heat-conducting silica gel pad and the arc-shaped heat-conducting aluminum sheet are interference fits.
所述弧形导热铝片为U型结构或J型结构。The arc-shaped heat-conducting aluminum sheet is a U-shaped structure or a J-shaped structure.
所述弧形导热铝片与平板热管之间采用焊接连接。The arc-shaped heat-conducting aluminum sheet and the flat heat pipe are connected by welding.
所述散热片与平板热管之间采用焊接连接。The heat sink is connected to the flat heat pipe by welding.
所述散热片的数量为至少两个的偶数个数。The number of the cooling fins is an even number of at least two.
上述一种用于圆柱型锂电池组的散热结构，其原理为，圆柱电池产生的热量通过导热硅胶垫和弧形导热铝片传导到平板热管上，平板热管的高导热性将热量传导到平板热管的另一端，通过散热片把热量及时散发，有利于圆柱形锂电池组内温度一致。The above-mentioned heat dissipation structure for a cylindrical lithium battery pack is based on the principle that the heat generated by the cylindrical battery is transferred to the flat heat pipe through the heat-conducting silica gel pad and the arc-shaped heat-conducting aluminum sheet, and the high thermal conductivity of the heat pipe conducts the heat to the plate At the other end of the heat pipe, the heat is dissipated in time through the heat sink, which is conducive to the uniform temperature in the cylindrical lithium battery pack.
本发明相对于现有技术，具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
本用于圆柱型锂电池组的散热结构采用弧形导热铝片紧密贴合圆柱电池的外表面，增大圆柱电池与弧形导热铝片的接触面积，弧形导热铝片通过平板热管将热量传导到散热片上，提高了导热效率，本发明利用了热管的高导热性将热量传导到热管另一端的散热片上，及时散发热量，本发明结构紧凑，装备简易，温控性能好，而且避免了液体泄漏风险，安全性高。The heat dissipation structure used for cylindrical lithium battery packs uses arc-shaped heat-conducting aluminum sheets to closely fit the outer surface of cylindrical batteries, increasing the contact area between cylindrical batteries and arc-shaped heat-conducting aluminum sheets, and the arc-shaped heat-conducting aluminum sheets pass heat through flat heat pipes Conducted to the heat sink, which improves the heat conduction efficiency. The invention utilizes the high thermal conductivity of the heat pipe to transfer the heat to the heat sink at the other end of the heat pipe, and dissipates heat in time. The invention has compact structure, simple equipment, good temperature control performance, and avoids Risk of liquid leakage, high safety.
附图说明Description of drawings
图1为本用于圆柱型锂电池组的散热结构的结构示意图。FIG. 1 is a schematic structural diagram of a heat dissipation structure for a cylindrical lithium battery pack.
图2为圆柱电池、弧形导热铝片和导热硅胶垫的局部放大结构示意图。Fig. 2 is a partially enlarged structural schematic diagram of a cylindrical battery, a curved heat-conducting aluminum sheet and a heat-conducting silica gel pad.
图3为圆柱电池的结构示意图。Fig. 3 is a schematic structural diagram of a cylindrical battery.
图4为平板热管的结构示意图。Fig. 4 is a structural schematic diagram of a flat heat pipe.
图5为弧形导热铝片的结构示意图。Fig. 5 is a schematic diagram of the structure of the arc-shaped heat-conducting aluminum sheet.
图6为导热硅胶垫的结构示意图。Fig. 6 is a schematic diagram of the structure of the thermally conductive silicone pad.
图7为散热片的结构示意图。FIG. 7 is a schematic structural diagram of a heat sink.
其中，图中所示，1为圆柱电池、2为平板热管、3为弧形导热铝片、4为导热硅胶垫、5为散热片。Among them, as shown in the figure, 1 is a cylindrical battery, 2 is a flat heat pipe, 3 is an arc-shaped heat-conducting aluminum sheet, 4 is a heat-conducting silica gel pad, and 5 is a heat sink.
具体实施方式Detailed ways
下面结合实施例，对本发明作进一步的详细说明，但本发明的实施方式不限于此。The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.
实施例Example
本实施例一种设备，如图1～7所示，一种用于圆柱型锂电池组的散热结构，包括圆柱电池1、平板热管2、弧形导热铝片3和散热片5，所述弧形导热铝片包括弧形部分和平面部分，弧形部分的弧度与圆柱电池侧面外表面的弧度相同，圆柱电池放置于弧形导热铝片的弧形部分之中，平板热管的一端与弧形导热铝片的平面部分接触，平板热管的另一端与铝制的散热片接触，散热片的长度与平板热管的宽度相同，散热片的高度不大于相邻圆柱电池的间距。其中，铝制的散热片可以增大平板热管与空气的换热面积，一个平板热管上可与多个弧形导热铝片接触，平板热管可快速传导热量至散热片，弧形导热铝片均匀排列，每个弧形导热铝片上横向放置一个圆柱电池。圆柱电池外层包覆绝缘膜，圆柱电池的两端分别为正极耳和负极耳。弧形导热铝片与圆柱电池之间还设有导热硅胶垫4，导热硅胶垫与圆柱电池侧面紧密贴合。导热硅胶垫与圆柱电池和弧形导热铝片之间紧密贴合，增大接触面积，增强导热效果。平板热管是由微通道铝扁管抽真空之后，再向微通道铝扁管中加注冷却液制成的。圆柱电池与导热硅胶垫之间、导热硅胶垫与弧形导热铝片之间的配合均为过盈配合。弧形导热铝片为U型结构或J型结构。弧形导热铝片与平板热管之间采用焊接连接。散热片与平板热管之间采用焊接连接。散热片的数量为4个，根据圆柱电池产热量的大小设计不同尺寸。A device in this embodiment, as shown in Figures 1 to 7, is a heat dissipation structure for a cylindrical lithium battery pack, including a cylindrical battery 1, a flat heat pipe 2, an arc-shaped heat-conducting aluminum sheet 3, and a heat sink 5. The arc-shaped heat-conducting aluminum sheet includes an arc-shaped part and a flat part. The arc of the arc-shaped part is the same as that of the outer surface of the side surface of the cylindrical battery. The cylindrical battery is placed in the arc-shaped part of the arc-shaped heat-conducting aluminum sheet. The flat part of the heat-conducting aluminum sheet is in contact with the flat heat pipe, and the other end of the flat heat pipe is in contact with the aluminum heat sink. The length of the heat sink is the same as the width of the flat heat pipe, and the height of the heat sink is not greater than the distance between adjacent cylindrical batteries. Among them, the aluminum heat sink can increase the heat exchange area between the flat heat pipe and the air. One flat heat pipe can be in contact with multiple arc-shaped heat-conducting aluminum sheets, and the flat heat pipe can quickly transfer heat to the heat sink. Arranged, a cylindrical battery is placed horizontally on each curved heat-conducting aluminum sheet. The outer layer of the cylindrical battery is covered with an insulating film, and the two ends of the cylindrical battery are positive tabs and negative tabs respectively. There is also a heat-conducting silicone pad 4 between the arc-shaped heat-conducting aluminum sheet and the cylindrical battery, and the heat-conducting silicone pad closely fits the side of the cylindrical battery. The heat-conducting silicone pad is closely attached to the cylindrical battery and the arc-shaped heat-conducting aluminum sheet to increase the contact area and enhance the heat conduction effect. The flat heat pipe is made by adding cooling liquid to the micro-channel aluminum flat tube after the micro-channel aluminum flat tube is evacuated. The fit between the cylindrical battery and the heat-conducting silicone pad, and between the heat-conducting silicone pad and the arc-shaped heat-conducting aluminum sheet is an interference fit. The arc-shaped heat-conducting aluminum sheet is a U-shaped structure or a J-shaped structure. The arc-shaped heat-conducting aluminum sheet and the flat heat pipe are connected by welding. The heat sink is welded to the flat heat pipe. The number of heat sinks is 4, and different sizes are designed according to the heat generated by the cylindrical battery.
上述一种用于圆柱型锂电池组的散热结构，其原理为，圆柱电池产生的热量通过导热硅胶垫和弧形导热铝片传导到平板热管上，平板热管的高导热性将热量传导到平板热管的另一端，通过散热片把热量及时散发，有利于圆柱形锂电池组内温度一致。The above-mentioned heat dissipation structure for a cylindrical lithium battery pack is based on the principle that the heat generated by the cylindrical battery is transferred to the flat heat pipe through the heat-conducting silica gel pad and the arc-shaped heat-conducting aluminum sheet, and the high thermal conductivity of the heat pipe conducts the heat to the plate At the other end of the heat pipe, the heat is dissipated in time through the heat sink, which is conducive to the uniform temperature in the cylindrical lithium battery pack.
如上所述，便可较好地实现本发明，上述实施例仅为本发明的较佳实施例，并非用来限定本发明的实施范围；即凡依本发明内容所作的均等变化与修饰，都为本发明权利要求所要求保护的范围所涵盖。As mentioned above, the present invention can be better realized. The above-mentioned embodiment is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention; Covered by the scope of protection required by the claims of the present invention.
Claims (9)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115084718A (en) * | 2022-08-23 | 2022-09-20 | 四川大学 | Small-size power battery package unit, heat transfer structure and electric motor car |
| CN115764052A (en) * | 2022-11-07 | 2023-03-07 | 清华大学 | Battery module with cladding type flat plate heat pipe structure and battery pack |
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| CN115764052A (en) * | 2022-11-07 | 2023-03-07 | 清华大学 | Battery module with cladding type flat plate heat pipe structure and battery pack |
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