CN108281701A - Uniform temperature pouch battery module and power battery - Google Patents
Uniform temperature pouch battery module and power battery Download PDFInfo
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- CN108281701A CN108281701A CN201810100646.5A CN201810100646A CN108281701A CN 108281701 A CN108281701 A CN 108281701A CN 201810100646 A CN201810100646 A CN 201810100646A CN 108281701 A CN108281701 A CN 108281701A
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M10/6554—Rods or plates
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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
Description
技术领域technical field
本发明涉及电池技术领域，具体涉及一种均温的软包电池模组及动力电池。The invention relates to the technical field of batteries, in particular to a temperature-equalized soft pack battery module and a power battery.
背景技术Background technique
软包锂电池是在液态锂离子电池套上一层聚合物外壳。在结构上采用铝塑膜包装，具有重量轻、比容量高、安全性能好、内阻小、设计灵活等优点，在市场上广泛得到使用。The soft-pack lithium battery is a liquid lithium-ion battery covered with a polymer shell. The structure is packaged with aluminum-plastic film, which has the advantages of light weight, high specific capacity, good safety performance, small internal resistance, flexible design, etc., and is widely used in the market.
现有技术中对软包电池的散热通常采用自然冷却、风冷、液冷等方式，其中液冷冷却效率最高。目前软包电池模组的液冷设计一般有两种方式，一种是在电芯之间增加导热金属板，并将其折弯与水冷板接触，另一种是直接在电芯之间安装液冷板。In the prior art, natural cooling, air cooling, liquid cooling, etc. are usually used to dissipate heat from pouch batteries, among which liquid cooling has the highest cooling efficiency. At present, there are generally two methods for the liquid cooling design of pouch battery modules, one is to add a heat-conducting metal plate between the cells, and bend it to contact the water-cooled plate, and the other is to install it directly between the cells Liquid cold plate.
但是，现阶段在电芯间增加的导热金属板均为分离式的，各个导热铝板在均温性上存在不足。However, at this stage, the heat-conducting metal plates added between the cells are all separated, and each heat-conducting aluminum plate has insufficient temperature uniformity.
发明内容Contents of the invention
(一)解决的技术问题(1) Solved technical problems
针对现有技术的不足，本发明提供了一种均温的软包电池模组及动力电池，解决了现有技术的各个导热铝板在均温性上存在不足的技术问题。Aiming at the deficiencies of the prior art, the present invention provides a uniform temperature pouch battery module and a power battery, which solves the technical problem of insufficient temperature uniformity of each heat-conducting aluminum plate in the prior art.
(二)技术方案(2) Technical solution
为实现以上目的，本发明通过以下技术方案予以实现：To achieve the above object, the present invention is achieved through the following technical solutions:
第一方面，提供一种均温的软包电池模组，包括铝壳外框，上述铝壳外框内部插接有一体成型的反S形结构导热板，上述反S形结构导热板侧面与铝壳外框的内侧面接触；上述铝壳外框的外表面设置有水冷板；In the first aspect, a soft-pack battery module with uniform temperature is provided, which includes an aluminum shell frame, and an integrally formed reverse S-shaped heat conduction plate is inserted inside the aluminum shell frame, and the side of the reverse S-shaped heat conduction plate is connected to the The inner surface of the aluminum shell frame is in contact; the outer surface of the aluminum shell frame is provided with a water cooling plate;
上述反S形结构导热板的上端面、下端面以及开口位置填装软包电芯组，上述软包电芯组包括两个软包电芯以及夹持在两个软包电芯之间的隔热板；The upper end surface, the lower end surface and the opening position of the above-mentioned reverse S-shaped heat conduction plate are filled with a soft-packed battery pack, and the above-mentioned soft-packed battery pack includes two soft-packed battery cells and a heat shield;
上述软包电芯的正负极耳嵌入集成盖板中，集成盖板与盖板相固定后通过左侧端板固定安装在铝壳外框的一侧，铝壳外框的另一侧设置有绝缘板通过右侧端板固定。The positive and negative tabs of the above-mentioned soft-packed batteries are embedded in the integrated cover plate. After the integrated cover plate is fixed with the cover plate, it is fixed and installed on one side of the aluminum shell frame through the left end plate, and the other side of the aluminum shell frame is set There is an insulating plate fixed through the right end plate.
上述软包电芯的正负极耳嵌入集成盖板中，上述集成盖板通过左侧端板固定安装在铝壳外框的一侧，上述集成盖板和左侧端板之间还设置有盖板，铝壳外框的另一侧设置有绝缘板通过右侧端板固定。The positive and negative tabs of the above-mentioned soft-packed batteries are embedded in the integrated cover plate, and the above-mentioned integrated cover plate is fixedly installed on one side of the aluminum shell frame through the left end plate, and there is also a gap between the above-mentioned integrated cover plate and the left end plate As for the cover plate, an insulating plate is arranged on the other side of the aluminum shell frame and fixed through the right end plate.
优选的，上述隔热板包括隔热涂层和云母板；上述隔热涂层涂覆在上述云母板上。Preferably, the heat insulation board includes a heat insulation coating and a mica board; the heat insulation coating is coated on the mica board.
优选的，上述反S形结构导热板厚度为08～1.5mm，折弯角度为90°，折弯半径不大于1mm。Preferably, the above-mentioned reverse S-shaped heat conduction plate has a thickness of 0.8-1.5 mm, a bending angle of 90°, and a bending radius of no more than 1 mm.
优选的，上述绝缘板厚度为08～1.5mm，绝缘板一侧面与右侧端板胶接。Preferably, the thickness of the insulation board is 0.8-1.5 mm, and one side of the insulation board is glued to the right end board.
优选的，上述铝壳外框外表明设为凹凸台。Preferably, the outer surface of the above-mentioned aluminum shell is set as a concave-convex platform.
优选的，上述水冷板设置在铝壳外框的底部或者任一侧面位置。Preferably, the above-mentioned water cooling plate is arranged at the bottom or any side of the aluminum shell frame.
第二方面，还提供一种动力电池，至少包括一组上述任一均温的软包电池模组。In the second aspect, there is also provided a power battery, comprising at least one set of any one of the temperature-equalizing pouch battery modules mentioned above.
(三)有益效果(3) Beneficial effects
本发明提供了一种均温的软包电池模组及动力电池。与现有技术相比，具备以下有益效果：The invention provides an even temperature soft pack battery module and a power battery. Compared with the prior art, it has the following beneficial effects:
1、本发明均温的软包电池模组，一体成型的反S形结构导热板侧面与铝壳外框的侧面均有接触，软包电芯发出的热量通过反S形结构导热板导入至铝壳外框侧面，进而传递到铝壳外框外表面的水冷板；采用一体成型的S形结构导热板，具有良好的均温性和导热性；各软包电芯与S形结构导热板的接触面具有良好的导热一致性，有效降低热扰动，能够将热量快速导入到水冷板上进行高效换热；并且在每组软包电芯的两个软包电芯之间设置有隔热板，能够很好的对软包电芯进行隔热，从而阻挡软包电芯间的热扩散，避免软包电芯之间发生热干扰。1. The soft pack battery module with uniform temperature of the present invention, the side of the integrally formed reverse S-shaped heat conduction plate is in contact with the side of the aluminum shell frame, and the heat emitted by the soft pack battery is introduced into the battery through the reverse S shape heat conduction plate The side of the aluminum shell frame, and then transferred to the water-cooled plate on the outer surface of the aluminum shell frame; the integrally formed S-shaped structure heat conduction plate has good temperature uniformity and thermal conductivity; each soft-packed battery cell and the S-shaped structure heat conduction plate The contact surface has good thermal conductivity consistency, effectively reduces thermal disturbance, and can quickly introduce heat to the water-cooled plate for efficient heat exchange; and there is a heat insulation between the two pouch cells of each group of pouch cells The board can well insulate the soft-packed cells, thereby blocking the thermal diffusion between the soft-packed cells and avoiding thermal interference between the soft-packed cells.
2、本发明均温的软包电池模组在铝壳外框外表面设为凹凸台，通过凹凸台增加铝壳外框与空气的接触面积，有利于散热，且起到减重的效果；位于最上方的电芯与铝壳外框顶部接触，其发出的热量传递给铝壳外框顶部，铝壳外框顶部的凹凸台，能够将热量快速导入至外界环境，提高了散热效果。2. The soft-pack battery module with uniform temperature of the present invention is provided with a concave-convex platform on the outer surface of the aluminum shell frame, and the contact area between the aluminum shell frame and the air is increased through the concave-convex platform, which is beneficial to heat dissipation and has the effect of reducing weight; The battery cell located at the top is in contact with the top of the aluminum shell frame, and the heat it emits is transferred to the top of the aluminum shell frame. The concave-convex platform on the top of the aluminum shell frame can quickly introduce heat to the external environment and improve the heat dissipation effect.
3、本发明提供的动力电池，散热效果好，使用寿命长。3. The power battery provided by the present invention has good heat dissipation effect and long service life.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明反S形结构导热板的结构示意图；Fig. 1 is the structural representation of the anti-S-shaped heat conduction plate of the present invention;
图2为本发明反S形结构导热板与软包电芯固定结构示意图；Fig. 2 is a schematic diagram of the fixed structure of the reverse S-shaped heat conducting plate and the soft-packed battery cell of the present invention;
图3为本发明均温的软包电池模组整体装配示意图；Fig. 3 is a schematic diagram of the overall assembly of the pouch battery module with uniform temperature in the present invention;
图4为本发明均温的软包电池模组与水冷板作用示意图。Fig. 4 is a schematic diagram of the function of the soft-pack battery module and the water-cooled plate of the present invention.
其中：1-左侧端板，2-盖板，3-集成盖板，4-铝壳外框，5-绝缘板，6-右侧端板，7-软包电芯，8-反S形结构导热铝板，9-水冷板。Among them: 1-left end plate, 2-cover plate, 3-integrated cover plate, 4-aluminum shell frame, 5-insulation plate, 6-right end plate, 7-soft package battery, 8-reverse S Shaped structure heat conduction aluminum plate, 9-water cooling plate.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
基于现有技术的不足，本发明实施例提供一种均温的软包电池模组，如图1～4所示，包括铝壳外框4，所述铝壳外框4内部插接有一体成型的反S形结构导热板8，所述反S形结构导热板8侧面与铝壳外框4的内侧面接触，所述铝壳外框4的外表面设置有水冷板9；Based on the deficiencies of the existing technology, the embodiment of the present invention provides a soft-pack battery module with uniform temperature, as shown in Figures 1 to 4, including an aluminum shell frame 4, which is plugged with an integrated Formed reverse S-shaped structure heat conduction plate 8, the side surface of the reverse S-shaped structure heat conduction plate 8 is in contact with the inner surface of the aluminum shell frame 4, and the outer surface of the aluminum shell frame 4 is provided with a water cooling plate 9;
如图2所示，反S形结构导热板8的上端面、下端面以及开口位置填装软包电芯组，所述软包电芯组包括两个软包电芯7以及夹持在两个软包电芯7之间的隔热板；As shown in Figure 2, the upper end surface, the lower end surface and the opening position of the reverse S-shaped structure heat conduction plate 8 are filled with a soft-packed battery pack, and the soft-packed battery pack includes two soft-packed battery cells 7 and clamped between two A heat shield between the two pouch cells 7;
如图3所示，所述软包电芯7的正负极耳嵌入集成盖板3中，集成盖板3与盖板2相固定后通过左侧端板1固定安装在铝壳外框4的一侧，铝壳外框4的另一侧设置有绝缘板5通过右侧端板6固定As shown in FIG. 3 , the positive and negative tabs of the soft pack cell 7 are embedded in the integrated cover plate 3 , and the integrated cover plate 3 is fixed to the cover plate 2 and fixed on the aluminum shell outer frame 4 through the left end plate 1 On one side, the other side of the aluminum shell frame 4 is provided with an insulating plate 5 fixed by the right end plate 6
本发明实施例的均温的软包电池模组，一体成型的反S形结构导热板侧面与铝壳外框的侧面均有接触，软包电芯发出的热量通过反S形结构导热板导入至铝壳外框侧面，进而传递到铝壳外框外表面的水冷板；采用一体成型的S形结构导热板，具有良好的均温性和导热性，各软包电芯与S形结构导热板接触面具有良好的导热一致性，有效降低热扰动，能够将热量快速导入到水冷板上进行高效换热。In the uniform temperature pouch battery module of the embodiment of the present invention, the side of the integrally formed reverse S-shaped structure heat conduction plate is in contact with the side of the aluminum shell outer frame, and the heat emitted by the pouch battery is introduced through the reverse S-shaped structure heat conduction plate to the side of the aluminum shell frame, and then transferred to the water-cooled plate on the outer surface of the aluminum shell frame; the integrally formed S-shaped structure heat conduction plate has good temperature uniformity and thermal conductivity, and the heat conduction between each soft-packed battery cell and the S-shaped structure The plate contact surface has good heat conduction consistency, effectively reduces thermal disturbance, and can quickly introduce heat to the water-cooled plate for efficient heat exchange.
此外，在具体实施过程中反S形结构导热板通过相邻的软包电芯组进行夹持固定，无需另外的固定装置，结构更加简单。且在每组软包电芯的两个软包电芯之间设置有隔热板，能够很好的对软包电芯进行隔热，从而阻挡软包电芯间的热扩散。在具体实施过程中，通过设置绝缘板可保证端板与电芯间的绝缘性能，避免潜在的短路危险，增强模组使用的稳定性、安全性；In addition, in the specific implementation process, the reverse S-shaped structure heat conduction plate is clamped and fixed by the adjacent pouch cell group, no additional fixing device is needed, and the structure is simpler. In addition, a heat insulation board is arranged between the two soft-packed cells of each group of soft-packed cells, which can well insulate the soft-packed cells, thereby preventing heat diffusion between the soft-packed cells. In the specific implementation process, the insulation performance between the end plate and the battery core can be guaranteed by setting the insulating plate, avoiding potential short circuit risks, and enhancing the stability and safety of the module;
在具体实施过程中，上述隔热板包括隔热涂层和云母板；上述隔热涂层涂覆在上述云母板上。In a specific implementation process, the above-mentioned heat insulation board includes a heat insulation coating and a mica board; the above heat insulation coating is coated on the above mica board.
在具体的实施过程中，上述反S形结构导热板8厚度为0.8～1.5mm，折弯角度为90°，折弯半径不大于1mm。反S形结构导热板8厚度优选为1mmIn a specific implementation process, the thickness of the above-mentioned reverse S-shaped heat conducting plate 8 is 0.8-1.5 mm, the bending angle is 90°, and the bending radius is not greater than 1 mm. The thickness of the reverse S-shaped structure heat conducting plate 8 is preferably 1mm
在具体的实施过程中，上述绝缘板5厚度为0.8～1.5mm，绝缘板5一侧面与右侧端板6胶接。绝缘板5厚度优选为0.8～1.5mm。In a specific implementation process, the thickness of the insulating plate 5 is 0.8-1.5 mm, and one side of the insulating plate 5 is glued to the right end plate 6 . The thickness of the insulating plate 5 is preferably 0.8 to 1.5 mm.
在具体的实施过程中，上述铝壳外框4外表面设为凹凸台。In a specific implementation process, the outer surface of the above-mentioned aluminum shell frame 4 is set as a concave-convex platform.
本发明实施例的均温的软包电池模组在铝壳外框外表面设为凹凸台，通过凹凸台增加铝壳外框外框与空气的接触面积，有利于散热，且起到减重的效果；位于最上方的电芯与铝壳外框顶部接触，其发出的热量传递给铝壳外框顶部，铝壳外框顶部的凹凸台，能够将热量快速导入至外界环境，提高了散热效果。The soft-pack battery module with uniform temperature in the embodiment of the present invention is provided with a concave-convex platform on the outer surface of the aluminum shell frame, and the contact area between the outer frame of the aluminum shell frame and the air is increased through the concave-convex platform, which is beneficial to heat dissipation and reduces weight. The effect; the battery cell located at the top is in contact with the top of the aluminum shell frame, and the heat it emits is transferred to the top of the aluminum shell frame, and the concave-convex platform on the top of the aluminum shell frame can quickly introduce heat to the external environment, improving heat dissipation Effect.
在具体的实施过程中，反S形结构导热板8为高导热复合环氧铝板、复合热管铝板、均温板中的任意一种。In a specific implementation process, the anti-S-shaped structure heat conduction plate 8 is any one of high heat conduction composite epoxy aluminum plate, composite heat pipe aluminum plate, and uniform temperature plate.
另一方面，本发明实施例还提供一种动力电池，至少包括一组上述任一实施例的均温的软包电池模组。On the other hand, an embodiment of the present invention also provides a power battery, including at least one set of temperature-equalizing pouch battery modules according to any one of the above-mentioned embodiments.
本发明是实施例提供的动力电池，在使用过程中电池的散热效果好，使用寿命长。The present invention is the power battery provided by the embodiment, and the battery has good heat dissipation effect and long service life during use.
综上所述，本发明实施例提供的均温的软包电池模组及动力电池，较现有技术具有以下有益效果：To sum up, the uniform temperature pouch battery module and power battery provided by the embodiment of the present invention have the following beneficial effects compared with the prior art:
1、一体成型的反S形结构导热板侧面与铝壳外框的侧面均有接触，软包电芯发出的热量通过反S形结构导热板导入至铝壳外框侧面，进而传递到铝壳外框外表面的水冷板；采用一体成型的S形结构导热板，具有良好的均温性和导热性；各软包电芯与S形结构导热板的接触面具有良好的导热一致性，有效降低热扰动，能够将热量快速导入到水冷板上进行高效换热；并且在每组软包电芯的两个软包电芯之间设置有隔热板，能够很好的对软包电芯进行隔热，从而阻挡软包电芯间的热扩散，避免软包电芯之间发生热干扰。1. The side of the integrally formed anti-S-shaped structure heat conduction plate is in contact with the side of the aluminum shell frame, and the heat emitted by the soft-packed battery is introduced to the side of the aluminum shell frame through the anti-S-shaped structure heat conduction plate, and then transferred to the aluminum shell The water-cooled plate on the outer surface of the outer frame; the integrally formed S-shaped structure heat conduction plate has good temperature uniformity and thermal conductivity; the contact surface of each soft-packed battery cell and the S-shaped structure heat conduction plate has good heat conduction consistency, effectively To reduce thermal disturbance, heat can be quickly introduced to the water-cooled plate for efficient heat exchange; and a heat shield is set between the two pouch cells of each group of pouch cells, which can well protect the pouch cells Heat insulation is carried out to block the heat diffusion between the soft-packed cells and avoid thermal interference between the soft-packed cells.
2、本发明实施例的均温的软包电池模组在铝壳外框外表明面设为凹凸台，通过凹凸台增加铝壳外框外框与空气的接触面积，有利于散热，且起到减重的效果；位于最上方的电芯与铝壳外框顶部接触，其发出的热量传递给铝壳外框顶部，铝壳外框顶部的凹凸台，能够将热量快速导入至外界环境，提高了散热效果。2. The uniform temperature soft-pack battery module of the embodiment of the present invention is set as a concave-convex platform on the outer surface of the aluminum shell frame, and the contact area between the outer frame of the aluminum shell frame and the air is increased through the concave-convex platform, which is beneficial to heat dissipation and plays an important role. The effect of weight reduction is achieved; the battery cell located at the top is in contact with the top of the aluminum shell frame, and the heat emitted by it is transferred to the top of the aluminum shell frame, and the concave-convex platform on the top of the aluminum shell frame can quickly introduce heat to the external environment. Improved cooling effect.
3、本发明实施例提供的动力电池，散热效果好，使用寿命长。3. The power battery provided by the embodiment of the present invention has good heat dissipation effect and long service life.
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
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Application publication date: 20180713 |