CN205429112U - Device of lithium cell among hybrid vehicle - Google Patents
Device of lithium cell among hybrid vehicle Download PDFInfo
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- CN205429112U CN205429112U CN201620156706.1U CN201620156706U CN205429112U CN 205429112 U CN205429112 U CN 205429112U CN 201620156706 U CN201620156706 U CN 201620156706U CN 205429112 U CN205429112 U CN 205429112U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 74
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000012782 phase change material Substances 0.000 claims description 19
- 239000012188 paraffin wax Substances 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 23
- 238000001816 cooling Methods 0.000 abstract description 22
- 230000007423 decrease Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000012071 phase Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005192 partition Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
本实用新型公开了一种混合动力汽车中锂电池的装置，包括：箱体放置多列锂电池组；液冷套套置于所述箱体外表面；进风口设置于所述箱体的左侧上部；出风口设置于所述箱体的右侧下部；进风楔形通道沿所述进风口设置于所述锂电池组上方，进风楔形通道的内径沿着进风路径的延长逐渐缩小；出风楔形通道沿所述出风口设置于所述锂电池组下方，所述出风楔形通道的内径沿着出风路径的延长逐渐缩小；复数个第一导流板，每一所述锂电池组上方设置有一所述第一导流板；复数个第二导流板，每一所述锂电池组下方设置有一所述第二导流板；耦合散热结构设置于相邻的所述锂电池组之间，所述耦合散热结构包括出风槽道和变相部，用以对所述相邻的所述锂电池组散热。
The utility model discloses a lithium battery device in a hybrid electric vehicle, which comprises: a box body is placed with multiple rows of lithium battery groups; a liquid cooling sleeve is placed on the outer surface of the box body; an air inlet is arranged on the left side of the box body The upper part; the air outlet is arranged on the lower right side of the box; the air inlet wedge-shaped channel is arranged above the lithium battery pack along the air inlet, and the inner diameter of the air inlet wedge-shaped channel gradually decreases along the extension of the air inlet path; the air outlet The air wedge-shaped channel is arranged below the lithium battery pack along the air outlet, and the inner diameter of the air outlet wedge-shaped channel gradually decreases along the extension of the air outlet path; a plurality of first deflectors, each of the lithium battery packs There is a first deflector above; a plurality of second deflectors, and a second deflector under each lithium battery pack; the coupling heat dissipation structure is arranged on adjacent lithium battery packs Between them, the coupling heat dissipation structure includes an air outlet channel and a phase changing part for dissipating heat from the adjacent lithium battery packs.
Description
技术领域technical field
本实用新型涉及汽车电子应用技术领域，尤其涉及一种混合动力汽车中锂电池的装置。The utility model relates to the technical field of automotive electronics applications, in particular to a device for a lithium battery in a hybrid electric vehicle.
背景技术Background technique
蓄电池是混合动力电动汽车的重要组成部分，其工作状态的好坏直接影响整车的安全性、经济性等。锂离子电池在充放电过程中会放出热量，同时在汽车有限的的空间中电池组一般采用紧凑的布置形式，如果散热不及时则会引起电池内部的热积累，导致热失控，严重影响电池的性能及安全，温度的不一致会引起电池性能的不一致，造成部分电池的过充过放，使电池性能整体下降。此外，环境温度在10℃以下时，电池的放电容量开始下降，当温度低于-20℃时尤为明显，严重影响电池组与电动汽车的正常使用。The battery is an important part of a hybrid electric vehicle, and its working condition directly affects the safety and economy of the vehicle. Lithium-ion batteries will release heat during charging and discharging. At the same time, the battery pack is generally arranged in a compact form in the limited space of the car. If the heat dissipation is not timely, it will cause heat accumulation inside the battery, resulting in thermal runaway, which seriously affects the battery. Performance and safety, inconsistent temperature will cause inconsistent battery performance, resulting in overcharging and overdischarging of some batteries, resulting in overall decline in battery performance. In addition, when the ambient temperature is below 10°C, the discharge capacity of the battery begins to decline, especially when the temperature is below -20°C, which seriously affects the normal use of battery packs and electric vehicles.
目前，散热方法主要分为：空气冷却法、液体冷却法、相变材料冷却法、热管冷却法等。At present, heat dissipation methods are mainly divided into: air cooling method, liquid cooling method, phase change material cooling method, heat pipe cooling method, etc.
其中，强迫空气对流冷却法由于其结构简单，成本低以及较好的散热效果得到广泛的应用。但在较高的环境温度、持续大负荷等条件下，该方法不仅能耗大大增加，且散热效果也无法达到要求，且由于电池组的排列顺序及进风口长致使远离进风口的电池组散热慢，散热效果不均匀。Among them, the forced air convection cooling method is widely used because of its simple structure, low cost and better heat dissipation effect. However, under conditions such as high ambient temperature and continuous heavy load, this method not only greatly increases energy consumption, but also fails to meet the requirements for heat dissipation, and due to the arrangement of the battery packs and the length of the air inlet, the battery pack far away from the air inlet will dissipate heat. Slow, uneven cooling effect.
相变材料冷却法，利用材料相变过程中的吸取相变潜热的特性达到冷却的目的。该方法不需要额外的设备，不需要能量驱动，具有较好的热缓冲作用。但是，其属于一种被动的散热方法，只能在相变温度范围起作用，且由于相变材料较低的导热率导致其吸热速度较低，在大负荷条件下散热效果不理想。单纯的相变材料冷却系统多采用在电池四周填充相变材料来实现，此结构很难实现对电池组的加热。The phase change material cooling method uses the characteristic of absorbing latent heat of phase change during the phase change process of the material to achieve the purpose of cooling. The method does not require additional equipment, does not require energy drive, and has better thermal buffering effect. However, it is a passive heat dissipation method, which can only work in the phase change temperature range, and due to the low thermal conductivity of the phase change material, the heat absorption rate is low, and the heat dissipation effect is not ideal under heavy load conditions. The pure phase change material cooling system is mostly realized by filling the phase change material around the battery, and this structure is difficult to realize the heating of the battery pack.
热管冷却法，热管是一种密封结构的空心管，一端为蒸发端，另一端是冷凝端，管中含有蒸发时传递大量热量的液体以及冷凝时将液体带回起始点的吸液芯，是一种利用相变高效传热的热传导器。该方法能够较好地解决电池组散热的问题，但增加了系统的复杂程度，且由于热管单向传热的性质，此结构同样很难实现对电池组的加热。Heat pipe cooling method, the heat pipe is a hollow tube with a sealed structure, one end is the evaporation end, the other end is the condensation end, the tube contains a liquid that transfers a large amount of heat during evaporation and a liquid-absorbing core that brings the liquid back to the starting point during condensation. A heat conductor that utilizes phase transitions to transfer heat efficiently. This method can better solve the problem of heat dissipation of the battery pack, but it increases the complexity of the system, and due to the one-way heat transfer property of the heat pipe, it is also difficult to heat the battery pack with this structure.
实用新型内容Utility model content
针对现有的散热方法存在的上述问题，现提供一种旨在实现可使电池组均匀散热、结构简单且散热效果好的混合动力汽车中锂电池的装置。Aiming at the above-mentioned problems in the existing heat dissipation methods, a device for lithium batteries in hybrid electric vehicles with uniform heat dissipation of the battery pack, simple structure and good heat dissipation effect is provided.
具体技术方案如下：The specific technical scheme is as follows:
一种混合动力汽车中锂电池的装置，包括：A device for a lithium battery in a hybrid vehicle, comprising:
箱体，用以放置多列锂电池组；The box is used to place multiple rows of lithium battery packs;
液冷套，套置于所述箱体外表面；A liquid cooling jacket is placed on the outer surface of the box;
进风口，设置于所述箱体的左侧上部；The air inlet is arranged on the upper left side of the box;
出风口，设置于所述箱体的右侧下部；The air outlet is arranged at the lower right side of the box;
进风楔形通道，沿所述进风口设置于所述锂电池组上方，所述进风楔形通道的内径沿着进风路径的延长逐渐缩小；The air inlet wedge-shaped passage is arranged above the lithium battery pack along the air inlet, and the inner diameter of the air inlet wedge-shaped passage gradually decreases along the extension of the air inlet path;
出风楔形通道，沿所述出风口设置于所述锂电池组下方，所述出风楔形通道的内径沿着出风路径的延长逐渐缩小；The air outlet wedge-shaped channel is arranged below the lithium battery pack along the air outlet, and the inner diameter of the air outlet wedge-shaped channel gradually decreases along the extension of the air outlet path;
复数个第一导流板，每一所述锂电池组上方设置有一所述第一导流板；A plurality of first deflectors, one first deflector is arranged above each lithium battery pack;
复数个第二导流板，每一所述锂电池组下方设置有一所述第二导流板；A plurality of second deflectors, one second deflector is arranged under each lithium battery pack;
耦合散热结构，设置于相邻的所述锂电池组之间，所述耦合散热结构包括出风槽道和变相部，用以对所述相邻的所述锂电池组散热。The coupling heat dissipation structure is arranged between the adjacent lithium battery packs, and the coupling heat dissipation structure includes an air outlet channel and a phase changing part for dissipating heat from the adjacent lithium battery packs.
优选的，所述第一导流板的前端与每一组所述锂电池组的上表面靠近所述进风口的一侧连接，所述第一导流板的末端朝向所述进风口的进风方向。Preferably, the front end of the first deflector is connected to the side of the upper surface of each group of lithium battery packs close to the air inlet, and the end of the first deflector faces toward the inlet of the air inlet. wind direction.
优选的，所述第二导流板的前端与每一组所述锂电池组的下表面靠近所述出风口的一侧连接，所述第二导流板的末端朝向所述出风口的出风方向。Preferably, the front end of the second deflector is connected to the side of the lower surface of each set of lithium battery packs close to the air outlet, and the end of the second deflector faces toward the outlet of the air outlet. wind direction.
优选的，所述出风槽道设置于相邻的所述锂电池组之间，以使所述进风楔形通道与所述出风楔形通道之间形成气流。Preferably, the air outlet slots are arranged between adjacent lithium battery packs, so that an airflow is formed between the air inlet wedge-shaped channel and the air outlet wedge-shaped channel.
优选的，所述出风槽道包括两块竖直的隔板，两块所述隔板相对的一侧沿水平方向分别均匀设置有多个竖直的翅片，相邻两块所述翅片与两块所述隔板组合形成一竖直的安装槽。Preferably, the air outlet channel includes two vertical partitions, and the opposite sides of the two partitions are respectively uniformly provided with a plurality of vertical fins along the horizontal direction, and two adjacent fins The sheet is combined with the two partitions to form a vertical installation groove.
优选的，所述变相部为多个，每个所述变相部沿所述出风槽道的气流方向均匀间隔设置于所述出风槽道中。Preferably, there are multiple phase-changing parts, and each of the phase-changing parts is uniformly spaced in the air outlet channel along the airflow direction of the air outlet channel.
优选的，所述变相部间隔的密封安装于所述安装槽内。Preferably, the phase-changing part is installed in the installation groove in a sealed manner at intervals.
优选的，所述变相部采用变相材料石蜡。Preferably, the phase-changing part uses paraffin wax as a phase-changing material.
优选的，所述箱体内侧密封有变相材料层。Preferably, a phase-changing material layer is sealed inside the box.
优选的，所述变相材料层为石蜡层。Preferably, the phase-changing material layer is a paraffin wax layer.
上述技术方案的有益效果：The beneficial effect of above-mentioned technical scheme:
在本技术方案中，采用楔形通道达到了风道越狭窄风流越快，带走的热量就越多，从而缓解远离进风口的锂电池组散热慢效果差的弊端；利用导流板可增强风阻提高流场的均匀性；采用液冷套可吸收箱体表面的温度，提高散热效率；当大负荷时，通过变相部可在锂电池组温度达到一定值时，抑制锂电池组的温度的上升，起到热缓冲的作用，混合动力汽车中锂电池的装置还具有结构简单且散热效果好的优点。In this technical solution, the wedge-shaped channel is used to achieve the narrower the air channel, the faster the air flow, and the more heat it will take away, thereby alleviating the disadvantages of slow heat dissipation of the lithium battery pack far away from the air inlet; the wind resistance can be enhanced by using the deflector Improve the uniformity of the flow field; use the liquid cooling jacket to absorb the temperature on the surface of the box and improve the heat dissipation efficiency; when the load is heavy, the temperature of the lithium battery pack can be suppressed from rising when the temperature of the lithium battery pack reaches a certain value through the phase change unit , play the role of heat buffer, the device of lithium battery in hybrid electric vehicles also has the advantages of simple structure and good heat dissipation effect.
附图说明Description of drawings
图1为本实用新型所述的混合动力汽车中锂电池的装置的一种实施例的结构主视图；Fig. 1 is the structure front view of a kind of embodiment of the device of lithium battery in the hybrid electric vehicle described in the utility model;
图2为图1中P-P面的截面视图；Fig. 2 is the sectional view of P-P face in Fig. 1;
图3为图1中耦合散热结构的示意图。FIG. 3 is a schematic diagram of the coupled heat dissipation structure in FIG. 1 .
具体实施方式detailed description
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
需要说明的是，在不冲突的情况下，本实用新型中的实施例及实施例中的特征可以相互组合。It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
下面结合附图和具体实施例对本实用新型作进一步说明，但不作为本实用新型的限定。The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.
如图1-3所示，一种混合动力汽车中锂电池的装置，包括：As shown in Figure 1-3, a lithium battery device in a hybrid vehicle includes:
箱体1，用以放置多列锂电池组5；Box 1, used to place multiple rows of lithium battery packs 5;
液冷套14，套置于箱体1的外表面；The liquid cooling jacket 14 is placed on the outer surface of the box body 1;
进风口4，设置于箱体1的左侧上部；The air inlet 4 is arranged on the upper left side of the box body 1;
出风口3，设置于箱体1的右侧下部；The air outlet 3 is arranged at the lower right side of the box body 1;
进风楔形通道2，沿进风口4设置于锂电池组5上方，进风楔形通道2的内径沿着进风路径的延长逐渐缩小；The air inlet wedge-shaped channel 2 is arranged above the lithium battery pack 5 along the air inlet 4, and the inner diameter of the air inlet wedge-shaped channel 2 gradually decreases along the extension of the air inlet path;
出风楔形通道11，沿出风口3设置于锂电池组5下方，出风楔形通道11的内径沿着出风路径的延长逐渐缩小；The air outlet wedge-shaped channel 11 is arranged below the lithium battery pack 5 along the air outlet 3, and the inner diameter of the air outlet wedge-shaped channel 11 gradually decreases along the extension of the air outlet path;
复数个第一导流板12，每一锂电池组5上方设置有一第一导流板12；A plurality of first deflectors 12, each lithium battery pack 5 is provided with a first deflector 12;
复数个第二导流板13，每一锂电池组5下方设置有一第二导流板13；A plurality of second deflectors 13, a second deflector 13 is arranged under each lithium battery pack 5;
耦合散热结构6，设置于相邻的锂电池组5之间，耦合散热结构6包括出风槽道10和变相部8，用以对相邻的锂电池组5散热。The coupling heat dissipation structure 6 is disposed between adjacent lithium battery packs 5 , and the coupling heat dissipation structure 6 includes an air outlet channel 10 and a phase changing portion 8 for dissipating heat to adjacent lithium battery packs 5 .
在本实施例中，采用楔形通道达到了风道越狭窄风流越快，带走的热量就越多，从而缓解远离进风口4的锂电池组5散热慢效果差的弊端；利用导流板可增强风阻提高流场的均匀性；采用液冷套14可防止箱体1的温度过高吸收箱体1外表面的温度，提高散热效率。当大负荷时，通过变相部8可在锂电池组5温度达到一定值时，抑制锂电池组5的温度的上升，起到热缓冲的作用，混合动力汽车中锂电池的装置具有结构简单且散热效果好的优点。In the present embodiment, the narrower the air duct is, the faster the air flow is and the more heat is taken away by adopting the wedge-shaped passage, thereby alleviating the disadvantage of slow heat dissipation effect of the lithium battery pack 5 far away from the air inlet 4; Enhancing the wind resistance improves the uniformity of the flow field; adopting the liquid cooling jacket 14 can prevent the temperature of the box body 1 from being too high and absorb the temperature of the outer surface of the box body 1, thereby improving the heat dissipation efficiency. When the load is heavy, when the temperature of the lithium battery pack 5 reaches a certain value, the temperature of the lithium battery pack 5 can be suppressed by the phase-changing part 8, so as to play the role of thermal buffer. The device of the lithium battery in the hybrid electric vehicle has a simple structure and The advantage of good cooling effect.
在优选的实施例中，第一导流板12的前端与每一组锂电池组5的上表面靠近进风口4的一侧连接，第一导流板12的末端朝向进风口4的进风方向。In a preferred embodiment, the front end of the first deflector 12 is connected to the side of the upper surface of each lithium battery pack 5 near the air inlet 4, and the end of the first deflector 12 faces the air inlet of the air inlet 4. direction.
在本实施例中，通过第一导流板12增加风阻以提高流场的均匀性。In this embodiment, the wind resistance is increased through the first deflector 12 to improve the uniformity of the flow field.
在优选的实施例中，第二导流板13的前端与每一组锂电池组5的下表面靠近出风口3的一侧连接，第二导流板13的末端朝向出风口3的出风方向。In a preferred embodiment, the front end of the second deflector 13 is connected to the side of the lower surface of each lithium battery pack 5 near the air outlet 3, and the end of the second deflector 13 faces the air outlet of the air outlet 3. direction.
在本实施例中，通过第二导流板13增加风阻以提高流场的均匀性。In this embodiment, the wind resistance is increased through the second deflector 13 to improve the uniformity of the flow field.
如图1-3所示，在优选的实施例中，出风槽道10设置于相邻的锂电池组5之间，以使进风楔形通道2与出风楔形通道11之间形成气流，以实现空气散热。As shown in Figures 1-3, in a preferred embodiment, the air outlet channel 10 is arranged between adjacent lithium battery packs 5, so that an airflow is formed between the air inlet wedge-shaped channel 2 and the air outlet wedge-shaped channel 11, for air cooling.
如图3所示，在优选的实施例中，出风槽道10包括两块竖直的隔板7，两块隔板7相对的一侧沿水平方向分别均匀设置有多个竖直的翅片9，相邻两块翅片9与两块隔板7组合形成一竖直的安装槽。变相部8为多个，每个变相部8沿出风槽道10的气流方向均匀间隔设置于出风槽道10中。变相部8间隔的密封安装于安装槽内。未安装变相部8的安装槽形成出风槽道10。As shown in Figure 3, in a preferred embodiment, the air outlet channel 10 includes two vertical partitions 7, and the opposite sides of the two partitions 7 are respectively uniformly provided with a plurality of vertical fins along the horizontal direction. 9, two adjacent fins 9 are combined with two partitions 7 to form a vertical installation groove. There are multiple phase changing parts 8 , and each phase changing part 8 is evenly spaced in the air outlet channel 10 along the airflow direction of the air outlet channel 10 . The phase-changing part 8 is installed in the installation groove with a seal at intervals. The installation slots where the phase changing portion 8 is not installed form the air outlet channel 10 .
进一步地，变相部8采用变相材料石蜡。Further, the phase-changing part 8 adopts the phase-changing material paraffin.
在本实施例中，以高导热率的铝或铜制成带翅片9的板翅式隔板7，在翅片9间隙中以间隔的形式填充相变材料同时留出出风槽道10，其中相变材料被密封在翅片9之间，防止相变过程中出现泄漏现象。板翅式结构能够提高整体散热面积，并通过翅片9导热解决石蜡材料导热率过低的问题。该结构还具有空气导流分配作用，能够提高温度一致性。In this embodiment, the plate-fin separator 7 with fins 9 is made of aluminum or copper with high thermal conductivity, and the gaps between the fins 9 are filled with phase-change materials in the form of intervals while leaving the air outlet channel 10 , wherein the phase change material is sealed between the fins 9 to prevent leakage during the phase change process. The plate-fin structure can increase the overall heat dissipation area, and solve the problem of too low thermal conductivity of the paraffin wax material through heat conduction through the fins 9 . The structure also features air distribution for improved temperature uniformity.
在优选的实施例中，箱体1内侧密封有变相材料层，以起到热缓冲、绝热、保温的作用。In a preferred embodiment, the inner side of the box body 1 is sealed with a phase-changing material layer to play the role of thermal buffer, heat insulation and heat preservation.
进一步地，变相材料层为石蜡层。Further, the phase-changing material layer is a paraffin layer.
石蜡作为相变材料为可根据使用情况不同，在相变温度35℃～50℃间选取。在冬季等低温条件下选取相变温度为35℃～40℃的相变材料；在典型工况下选取相变温度为40℃～45℃的相变材料；在夏季等环境温度较高时选取相变温度为45℃～50℃的相变材料。常温及夏季高温等情况下(25℃～40℃)，在小负荷时，锂电池组5的温度缓慢升高，由风机经进风口4输入冷却空气，冷却空气经翅片9导流、分配，对锂电池组5进行冷却，热空气经出风口3排出，在此过程中，根据锂电池温度调整进风量大小，风量以保持出风槽道10中为层流状态的最大风量为上限。在大负荷时，先由风机输入冷却空气对锂电池组5进行冷却，当温度上升到高于相变材料的相变温度时，锂电池组5的热量经隔板7、翅片9传递给相变材料，相变材料发生固-液相变吸热过程，抑制锂电池组5的温度上升，起到热缓冲作用。负荷由大变小时，冷却空气将带走相变材料中储存的热量，保障相变材料能够持续工作。环境温度低于10℃的情况下，混合动力电动汽车启动时锂电池组5温度过低，利用发动机的余热对进风口4的空气进行加热，热空气经出风槽道10实现对锂电池组5的加热，保证锂电池组5的正常使用。行驶过程中，可以利用锂电池组5发出的热量对锂电池组5进行保温，同时通过控制风机调节进风量，将锂电池组5温度控制在最佳温度范围。As a phase change material, paraffin can be selected at a phase change temperature between 35°C and 50°C according to different usage conditions. Select phase change materials with a phase transition temperature of 35°C to 40°C in low temperature conditions such as winter; select phase change materials with a phase transition temperature of 40°C to 45°C under typical working conditions; A phase change material with a phase change temperature of 45°C to 50°C. Under the conditions of normal temperature and high temperature in summer (25°C-40°C), the temperature of the lithium battery pack 5 rises slowly when the load is small, and the fan enters the cooling air through the air inlet 4, and the cooling air is diverted and distributed through the fins 9 , the lithium battery pack 5 is cooled, and the hot air is discharged through the air outlet 3. In the process, the air intake volume is adjusted according to the temperature of the lithium battery, and the air volume is the maximum air volume that maintains the laminar flow state in the air outlet channel 10 as the upper limit. When the load is heavy, the cooling air from the blower is first used to cool the lithium battery pack 5. When the temperature rises above the phase transition temperature of the phase change material, the heat of the lithium battery pack 5 is transferred to the The phase change material, the phase change material undergoes a solid-liquid phase change endothermic process, which inhibits the temperature rise of the lithium battery pack 5 and acts as a thermal buffer. When the load changes from large to small, the cooling air will take away the heat stored in the phase change material to ensure that the phase change material can continue to work. When the ambient temperature is lower than 10°C, the temperature of the lithium battery pack 5 is too low when the hybrid electric vehicle is started, and the waste heat of the engine is used to heat the air in the air inlet 4, and the hot air passes through the air outlet channel 10 to realize cooling of the lithium battery pack. 5 to ensure the normal use of the lithium battery pack 5. During driving, the heat generated by the lithium battery pack 5 can be used to keep the lithium battery pack 5 warm, and at the same time, the temperature of the lithium battery pack 5 can be controlled within the optimum temperature range by controlling the fan to adjust the air intake.
以上所述仅为本实用新型较佳的实施例，并非因此限制本实用新型的实施方式及保护范围，对于本领域技术人员而言，应当能够意识到凡运用本实用新型说明书及图示内容所作出的等同替换和显而易见的变化所得到的方案，均应当包含在本实用新型的保护范围内。The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the implementation and protection scope of the present utility model. For those skilled in the art, they should be aware The schemes obtained by making equivalent replacements and obvious changes shall all be included in the protection scope of the present utility model.
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Cited By (9)
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| CN107732348A (en) * | 2017-09-26 | 2018-02-23 | 睿馨（珠海）投资发展有限公司 | Power battery module and its cooling system |
| CN107768767A (en) * | 2017-09-26 | 2018-03-06 | 深圳市曼戈弘电池企业（有限合伙） | The water cooling system and its application method of a kind of battery system |
| CN109509937A (en) * | 2018-12-29 | 2019-03-22 | 银隆新能源股份有限公司 | Container air conditioner cooling system and container |
| CN109792013A (en) * | 2016-10-07 | 2019-05-21 | 美国肯联铝业汽车制造有限公司 | Battery case for automobile batteries temperature management |
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| CN107768767A (en) * | 2017-09-26 | 2018-03-06 | 深圳市曼戈弘电池企业（有限合伙） | The water cooling system and its application method of a kind of battery system |
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| CN109509937A (en) * | 2018-12-29 | 2019-03-22 | 银隆新能源股份有限公司 | Container air conditioner cooling system and container |
| CN110027445A (en) * | 2019-03-05 | 2019-07-19 | 安徽力高新能源技术有限公司 | A kind of heat management system and method for battery management system |
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| CN112271357A (en) * | 2020-12-22 | 2021-01-26 | 四川大学 | A liquid cooling module and a heat dissipation structure of a battery cell series long single battery |
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