Fully-immersed power battery integrated equipment for electric bicycle and application of fully-immersed power battery integrated equipment

Abstract

The invention discloses fully-immersed power battery integrated equipment for an electric bicycle and application of the fully-immersed power battery integrated equipment to the electric bicycle. The fully-immersed power battery integrated equipment for the electric bicycle comprises a box body and a battery cell, the box body is provided with a containing space and is used for containing cooling liquid, the cooling liquid comprises at least one of halogenated hydrocarbon and an insulating medium, and the battery cell is immersed in the cooling liquid. According to the fully-immersed power battery integrated equipment provided by the invention, the safety performance of the battery can be effectively improved, so that the problem that fire disasters cannot be effectively prevented from occurring and spreading when the battery of an electric bicycle is subjected to thermal runaway can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling electronic equipment, and in particular to a fully immersed power battery integrated equipment for an electric bicycle and an application of the equipment on the electric bicycle. Background Art

[0002] With the strong support for the new energy industry, electric bicycles have become popular in almost every household and are closely related to people's lifestyles. However, while people enjoy the convenience brought by electric bicycles, the safety accidents they cause have gradually become a pain point of concern for the industry.

[0003] When charging and discharging, electric bicycles generate a lot of heat, which causes the battery temperature to rise. When the heat accumulates to a certain level, it is easy to trigger thermal runaway of the battery, and in severe cases, it will cause the electric bicycle to spontaneously combust. At present, there is no technology and equipment in China that can effectively suppress thermal runaway fires of electric bicycle batteries, resulting in the battery heat dissipation and fire safety issues of electric bicycles not being effectively resolved. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention provides a fully submerged power battery integrated device for electric bicycles and its application in electric bicycles. The fully submerged power battery integrated device provided by the present application can effectively improve the safety performance of the battery, thereby solving the problem that the electric bicycle cannot effectively avoid the occurrence and spread of fire when the battery is in thermal runaway.

[0005] In the first aspect of the present invention, the present invention proposes a fully immersed power battery integrated equipment for electric bicycles. According to an embodiment of the present invention, the fully immersed power battery integrated equipment for electric bicycles includes: a box body and a battery cell, the box body has a containing space for containing a coolant, wherein the coolant includes at least one of a halogenated hydrocarbon and an insulating medium, and the battery cell is immersed in the coolant.

[0006] According to the fully immersed power battery integrated equipment of the above embodiment of the present invention, by placing the battery cell in the accommodation space of the box body, and injecting the fully immersed coolant into the accommodation space, the fully immersed equipment integration for the fire safety of the power battery of the electric bicycle is realized, wherein the coolant includes at least one of halogenated hydrocarbons and insulating media, and has high flame retardancy and thermal conductivity. When the heat generated by the battery cell during operation can be absorbed and transferred to the external environment by the fully immersed coolant filled in the accommodation space of the box body, when the highly flame-retardant fully immersed coolant faces the rapidly accumulated heat that can cause the battery fire, it can still rely on its own flame retardancy to prevent the occurrence and spread of the battery thermal runaway fire, thereby ensuring the fire safety of the power battery of the electric bicycle. Further, the highly flame-retardant fully immersed coolant can not only play the role of heat dissipation and flame retardancy in time, but also can be used as an insulation layer between the battery cell and the external environment when operating under low temperature conditions, which greatly alleviates the mileage anxiety of the battery cell caused by the low ambient temperature, and enhances the battery's endurance in the external low temperature environment to a certain extent. Therefore, the fully immersed power battery integrated equipment provided by the present application can effectively improve the safety performance of the battery, thereby solving the problem that electric bicycles cannot effectively prevent the occurrence and spread of fire when the battery suffers thermal runaway.

[0007] In addition, the fully immersed power battery integrated equipment for electric bicycles according to the above embodiment of the present invention may also have the following additional technical features:

[0008] In some embodiments of the present invention, the halogenated hydrocarbon comprises C n H m X p , 1≤n≤4, 0≤m≤4, 2≤p≤6, and X includes one of Cl, Br and I. Thus, the flame retardant performance of the coolant can be improved, thereby effectively improving the safety performance of the battery, and solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0009] In some embodiments of the present invention, the insulating medium includes at least one of insulating oil, fluorinated liquid, synthetic ester and chlorinated paraffin. In this way, the flame retardant performance of the coolant can be improved, and the safety performance of the battery can be effectively improved, solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0010] In some embodiments of the present invention, the insulating oil includes at least one of mineral oil, silicone oil and vegetable oil. Thus, the insulation and heat dissipation performance of the coolant can be improved, thereby effectively improving the safety performance of the battery, and solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0011] In some embodiments of the present invention, the fluorinated liquid includes at least one of a perfluorinated compound and a hydrofluoroether. Thus, the fluorinated liquid has a flame retardant effect, which can improve the flame retardant performance of the coolant, thereby effectively improving the safety performance of the battery. At the same time, the fluorinated liquid also has insulation and heat dissipation effects, which can solve the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0012] In some embodiments of the present invention, the synthetic ester includes at least one of phosphate ester, fatty acid ester and polyester. Therefore, the synthetic ester is a high-ignition-point oil, has a certain degree of safety, and has the functions of insulation and heat dissipation, which can improve the flame retardant properties of the coolant, and thus can effectively improve the safety performance of the battery, solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery is thermally runaway.

[0013] In some embodiments of the present invention, the chlorinated paraffin includes one of chlorinated paraffin 42 and chlorinated paraffin 52. Thus, the flame retardant performance of the coolant can be improved, thereby effectively improving the safety performance of the battery, and solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0014] In some embodiments of the present invention, the box includes a connection port and a liquid injection port, the connection port is provided on the box for charging or discharging the battery cell, and the liquid injection port is provided on the box for injecting the coolant into the accommodation space. Therefore, a reasonable box design, including the setting of the connection port and the liquid injection port, helps to ensure the normal operation of the entire fully immersed integrated equipment and prolong the service life of the battery.

[0015] In some embodiments of the present invention, the box body further includes a fixing member, which is disposed at the bottom of the accommodation space and is used to fix the battery cell, thereby ensuring the stability of the battery cell, reducing the vibration and impact of the battery cell during use, reducing the risk of damage to the battery cell, and extending the service life of the battery cell.

[0016] In a second aspect of the present invention, the present invention provides an electric two-wheeled vehicle. According to an embodiment of the present invention, the electric two-wheeled vehicle includes the above-mentioned fully immersed power battery integrated equipment for electric bicycles. Therefore, the electric two-wheeled vehicle has excellent safety performance.

[0017] In a second aspect of the present invention, the present invention provides an electric tricycle. According to an embodiment of the present invention, the electric tricycle includes the above-mentioned fully immersed power battery integrated equipment for electric bicycles. Therefore, the electric tricycle has excellent safety performance.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 The schematic diagram of the structure of the fully immersed power battery integrated equipment for electric bicycles of the present application is shown;

[0021] Figure 2 A schematic diagram showing the structure of a vertical section of the integrated equipment of the present application is shown;

[0022] Figure 3 A schematic structural diagram of a transverse cross section of the integrated equipment of the present application is shown.

[0023] Figure Number:

[0024] A fully immersed power battery integrated device 100 for an electric bicycle comprises a box body 10 , a containing space 11 , a connection port 12 , a lead 121 , a liquid injection port 13 , a fixing member 14 , a flow channel gap 15 , and a battery cell 20 . DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In a first aspect of the present invention, the present invention provides a fully submerged power battery integrated device 100 for an electric bicycle. Figure 1-3 According to an embodiment of the present invention, the fully immersed power battery integrated equipment 100 for an electric bicycle includes: a box body 10 and a battery cell 20, the box body 10 has a containing space 11 for containing a coolant, wherein the coolant includes at least one of a halogenated hydrocarbon and an insulating medium, and the battery cell 20 is immersed in the coolant.

[0027] According to the fully immersed power battery integrated equipment 100 of the above embodiment of the present invention, by placing the battery cell 20 in the accommodating space 11 of the box body 10 and injecting fully immersed coolant into the accommodating space 11, fully immersed equipment integration for the fire safety of the electric bicycle power battery is realized, wherein the coolant includes at least one of a halogenated hydrocarbon and an insulating medium, and has high flame retardancy and thermal conductivity. When the heat generated by the battery cell 20 during operation can be absorbed by the fully immersed coolant filled in the accommodating space 11 of the box body 10 and transferred to the external environment, when the highly flame retardant fully immersed coolant faces rapidly accumulated heat that can cause a battery fire, it can still rely on its own flame retardancy to prevent the occurrence and spread of a battery thermal runaway fire, thereby ensuring the fire safety of the electric bicycle power battery. Furthermore, the highly flame-retardant fully immersed coolant can not only timely achieve the effects of heat dissipation and flame retardancy, but also can be used as an insulation layer between the battery cell 20 and the external environment when operating under low temperature conditions, greatly alleviating the mileage anxiety of the battery cell 20 caused by the low ambient temperature, and to a certain extent enhancing the battery's endurance in the external low temperature environment. Therefore, the fully immersed power battery integrated equipment 100 provided by the present application can effectively improve the safety performance of the battery, and thus can solve the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery is thermally runaway.

[0028] According to some embodiments of the present invention, the halogenated hydrocarbon comprises C n H m X p , 1≤n≤4, 0≤m≤4, 2≤p≤6, X includes one of Cl, Br and I. For example, n can be 1, 2, 3, 4, etc.; m can be 0, 1, 2, 3, 4, etc.; p can be 2, 4, 5, 6, etc. The halogen atoms (Cl, Br and I) in halogenated hydrocarbons have strong electronegativity, which can capture free radicals during the combustion process, interrupt the chain reaction of combustion, and thus inhibit the spread of flames. The molecular structure of 1≤n≤4, 0≤m≤4, 2≤p≤6 may make halogenated hydrocarbons have good stability at high temperatures, not easy to decompose or burn, and help improve the flame retardant properties of the coolant. As a result, the flame retardant properties of the coolant can be improved, and then the safety performance of the battery can be effectively improved, solving the problem that electric bicycles cannot effectively avoid the occurrence and spread of fire when the battery has thermal runaway.

[0029] According to some embodiments of the present invention, the insulating medium includes at least one of insulating oil, fluorinated liquid, synthetic ester and chlorinated paraffin. The above-mentioned insulating medium includes both low-flash point mineral oil, which can achieve the purpose of flame retardancy by increasing the amount of halogenated hydrocarbons added when mixed with halogenated hydrocarbons; it also includes high-ignition point oil (such as silicone oil, vegetable oil, synthetic ester, etc.), which is not easy to burn, thereby improving the flame retardant properties of the coolant; it also includes non-combustible insulating medium (such as fluorinated liquid), which can remain stable at high temperatures, is not easy to decompose or burn, and can improve the flame retardant properties of the coolant, and further improve the flame retardant safety. Therefore, the selection of the above-mentioned insulating medium can improve the flame retardant properties of the coolant, and can effectively improve the safety performance of the battery, and solve the problem that the electric bicycle cannot effectively avoid the occurrence and spread of fire when the battery is thermally runaway.

[0030] According to some embodiments of the present invention, the insulating oil includes at least one of mineral oil, silicone oil and vegetable oil. Mineral oil, silicone oil and vegetable oil usually have good thermal stability, are not easy to decompose or burn at high temperatures, and can reduce the risk of fire. When the battery is heated, the insulating oil can absorb part of the heat, reduce the temperature of the battery, and reduce the possibility of thermal runaway. Therefore, the use of the above-mentioned insulating oil can improve the flame retardant properties of the coolant, and then effectively improve the safety performance of the battery, solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery is in thermal runaway.

[0031] As an example, mineral oil includes but is not limited to No. 10 transformer insulation cooling oil, No. 25 transformer insulation cooling oil, No. 45 transformer insulation cooling oil, etc. Silicone oil includes but is not limited to methyl silicone oil, ethyl silicone oil and functionalized silicone oils thereof, such as dimethyl silicone oil, diethyl silicone oil, benzyl silicone oil, amino methyl silicone oil, etc. Vegetable oil includes but is not limited to soybean oil, corn oil, peanut oil, etc.

[0032] According to some embodiments of the present invention, the fluorinated liquid includes at least one of a perfluorinated compound and a hydrofluoroether. The fluorinated liquid has low surface energy and can form a uniform protective film on the surface of the battery to isolate oxygen and heat, thereby slowing down the rate of combustion. Among them, perfluorinated compounds and hydrofluoroethers usually have high chemical stability, are not easy to burn, and can remain stable in a high temperature environment. The above-mentioned fluorinated liquid has good heat absorption capacity, can absorb the heat generated by the battery, reduce the battery temperature, and reduce the risk of thermal runaway. Therefore, the use of the above-mentioned fluorinated liquid can improve the flame retardant properties of the coolant, and then can effectively improve the safety performance of the battery, solving the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery is in thermal runaway.

[0033] According to some embodiments of the present invention, the synthetic ester includes at least one of phosphate ester, fatty acid ester and polyester. Phosphorus ester contains phosphorus element, which can form substances such as phosphoric acid or polyphosphoric acid during combustion, which can promote carbonization and form a heat-insulating and oxygen-isolating carbon layer on the surface of the material, thereby preventing the spread of flames and playing a flame retardant role; fatty acid ester has a high flash point and autoignition point, making it difficult to burn. In addition, fatty acid ester may also decompose to produce some non-combustible gases during combustion, diluting the concentration of combustible gases, thereby slowing down the combustion rate; the molecular structure of polyester enables it to form a cross-linked structure during combustion, increasing the stability of the material and reducing the occurrence of combustion. At the same time, polyester also has a certain heat absorption capacity, which can reduce the temperature of the material and reduce the risk of thermal runaway. Therefore, the selection of the above-mentioned synthetic ester can improve the flame retardant properties of the coolant, and then effectively improve the safety performance of the battery, solving the problem that the electric bicycle cannot effectively avoid the occurrence and spread of fire when the battery is in thermal runaway.

[0034] As examples, the synthetic esters include, but are not limited to, methyl oleate, diethylhexyl carbonate, triethylhexanoin, trioctyl phosphate, trimethyl phosphate, triethyl phosphate, tributyl phosphate, and the like.

[0035] According to some embodiments of the present invention, the chlorinated paraffin includes one of chlorinated paraffin 42 and chlorinated paraffin 52. The above-mentioned chlorinated paraffin will decompose and produce hydrogen chloride gas when heated. The hydrogen chloride gas can absorb heat, reduce the flame temperature, and thus slow down the combustion speed. The hydrogen chloride gas produced by the decomposition can also dilute the concentration of the combustible gas, making it difficult to maintain combustion; the chlorinated paraffin can also form a covering layer on the surface of the combustion object, isolating the contact between oxygen and the combustion object, and preventing further combustion. Therefore, the use of the above-mentioned chlorinated paraffin can improve the flame retardant properties of the coolant, and then can effectively improve the safety performance of the battery, and solve the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery is thermally runaway.

[0036] According to some embodiments of the present invention, the box body 10 includes a connection port 12 and a liquid injection port 13, wherein the connection port 12 is provided on the box body 10 for charging or discharging the battery cell 20, and the liquid injection port 13 is provided on the box body 10 for injecting the coolant into the accommodating space 11. The setting of the connection port 12 can conveniently charge or discharge the battery cell 20, ensuring the normal use of the electric bicycle. The setting of the liquid injection port 13 makes it more convenient to inject coolant into the accommodating space 11, ensuring that the battery cell 20 can be completely immersed in the coolant. The injection of coolant can transfer heat in time when the battery falls into thermal runaway, and rely on the flame retardant characteristics to suppress the occurrence and further spread of fire, effectively improving the safety of the battery. Therefore, a reasonable design of the box body 10, including the setting of the connection port 12 and the liquid injection port 13, helps to ensure the normal operation of the entire fully immersed integrated equipment and extend the service life of the battery.

[0037] It should be noted that there is no particular limitation on the connection method between the connection port 12 and the battery cell 20 , and the battery cell 20 and the connection port 12 may be connected via a wire 121 .

[0038] According to some embodiments of the present invention, the box 10 further includes a fixing member 14, which is disposed in the accommodating space 11 and is used to fix the battery cell 20. The setting of the fixing member 14 can effectively fix the battery cell 20, prevent the battery cell 20 from shaking or shifting inside the box 10, and ensure the stability of the battery cell 20. Fixing the battery cell 20 can reduce the vibration and impact to the battery cell 20 during use, reduce the risk of damage to the battery cell 20, and extend the service life of the battery cell 20. The stable fixing method of the battery cell 20 can reduce problems such as poor contact or short circuit between the battery cells 20, improve the safety of battery use, and reduce the probability of safety accidents such as fire.

[0039] It should be noted that there is no special limitation on the structure of the fixing member 14 , and it may be a slot structure or a bracket structure, and those skilled in the art may flexibly select the structure according to their needs.

[0040] According to a specific embodiment of the present application, the fixing member 14 is a card slot structure, which is provided on the upper bottom surface and the lower bottom surface of the accommodating space 11. The card slot is adapted to the shape and number of the battery cell 20, and the battery cell 20 can be inserted therein, thereby achieving a fixing effect, and can effectively limit the movement of the battery cell 20, so that it remains stable inside the box 10. There is no special limitation on the number of battery cells 20 and the number of card slots, and technicians in this field can flexibly select according to needs. When a plurality of card slots are provided in the accommodating space 11, the space spacing between adjacent card slots can form a flow channel gap 15, which can provide storage space for full immersion of the coolant, increase the contact area between the battery cell 20 and the highly flame-retardant immersion coolant, and thus improve the efficiency of heat dissipation and flame retardancy.

[0041] It should be noted that the battery cell 20 is usually composed of a positive electrode sheet, a negative electrode sheet, an electrolyte and a separator. There is no special limitation on the shape of the battery cell 20. The shape of the battery cell 20 includes but is not limited to cylindrical, square and soft-pack, etc. Technicians in this field can flexibly select according to needs.

[0042] The fully immersed power battery integrated equipment 100 for electric bicycles provided in the present application has excellent heat dissipation, flame retardancy and low-temperature battery efficiency enhancement characteristics, which can, to a certain extent, ensure that the electric bicycle will not fail or even catch fire due to heating of the battery pack, and solve the current problem that electric bicycles cannot effectively prevent the occurrence and spread of fire when the power battery has thermal runaway. It is a very potential equipment solution in the field of electric bicycles and can be widely used in the electric bicycle industry or in products using high-power battery packs.

[0043] In the second aspect of the present invention, the present invention proposes an electric two-wheeled vehicle. According to an embodiment of the present invention, the electric two-wheeled vehicle includes the above-mentioned fully immersed power battery integrated equipment 100 for electric bicycles. As a result, the electric two-wheeled vehicle has excellent safety performance. It should be noted that the features and advantages described above for the fully immersed power battery integrated equipment 100 for electric bicycles are also applicable to the electric two-wheeled vehicle, and will not be repeated here.

[0044] In the third aspect of the present invention, the present invention proposes an electric tricycle. According to an embodiment of the present invention, the electric tricycle includes the above-mentioned fully immersed power battery integrated equipment 100 for electric bicycles. As a result, the electric tricycle has excellent safety performance. It should be noted that the features and advantages described above for the fully immersed power battery integrated equipment 100 for electric bicycles are also applicable to the electric tricycle, and will not be repeated here.

[0045] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in this area or the product specifications are used. The reagents or instruments used that do not specify the manufacturer are all conventional products that can be obtained commercially.

[0046] Example 1

[0047] 1) Preparation of coolant: The halogenated hydrocarbon hexachloropropylene (C3Cl6) and the insulating medium mineral oil are mixed uniformly in a mass ratio of 2:8 to obtain a coolant;

[0048] 2) injecting the coolant obtained in step 1) into the box body to which the battery cell has been fixed, so that the battery cell is fully immersed in the box body, thereby obtaining a fully immersed power battery integrated equipment for an electric bicycle;

[0049] 3) Apply the fully immersed power battery integrated equipment for electric bicycles obtained in step 2) to electric two-wheeled vehicles.

[0050] Example 2

[0051] The difference between Example 2 and Example 1 is that the halogenated hydrocarbon C3F6Br2 and the insulating medium hydrofluoroether are uniformly mixed in a mass ratio of 2:8 to obtain a coolant.

[0052] Example 3

[0053] The difference between Example 3 and Example 1 is that the halogenated hydrocarbon C4F8I2 and the insulating medium phosphate ester are uniformly mixed in a mass ratio of 2:8 to obtain a coolant.

[0054] Example 4

[0055] The difference between Example 4 and Example 1 is that the halogenated hydrocarbon C2H2Cl4 and the insulating medium chlorinated paraffin 42 are uniformly mixed in a mass ratio of 2:8 to obtain a coolant.

[0056] Example 5

[0057] The difference between Example 5 and Example 1 is that the fully immersed power battery integrated equipment for electric bicycles obtained in step 2) is applied to electric tricycles.

[0058] Comparative Example 1

[0059] The difference between Comparative Example 1 and Example 1 is that insulating medium mineral oil is directly used as the coolant.

[0060] Comparative Example 2

[0061] The difference between Comparative Example 1 and Example 1 is that no coolant is added to the battery integration equipment.

[0062] Testing and analysis

[0063] Under the same conditions, the flame retardant performance test was performed on the battery integrated equipment prepared in the above Examples 1-5 and Comparative Examples 1-2. The specific test method is as follows:

[0064] Flame retardant performance test:

[0065] 1) Perform standard charging of the lithium battery cell: 1C charging (current 1C, upper voltage 4.2V, cut-off current 0.05C);

[0066] 2) Place in air / insulating oil at room temperature: let stand for 30 minutes;

[0067] 3) Continue charging at 1C until thermal runaway is triggered, observe the battery cell status, and record the maximum temperature of the battery cell during thermal runaway, as well as the combustion and explosion of the battery cell and coolant.

[0068] The test results are shown in Table 2.

[0069] Table 2

[0070]

[0071]

[0072] “——” means no.

[0073] Results and Discussion

[0074] It can be seen from Table 1-2 that, compared with Comparative Example 1-2, the fully immersed power battery integrated equipment provided in Example 1-5 can effectively improve the safety performance of the battery, and solve the problem that the electric bicycle cannot effectively prevent the occurrence and spread of fire when the battery has thermal runaway.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A fully immersed power battery integrated equipment for electric bicycles, It is characterized in that include: A box body, the box body having a containing space for containing a coolant, wherein the coolant comprises at least one of a halogenated hydrocarbon and an insulating medium; The battery cell is immersed in the coolant.

2. The fully submerged power battery integrated equipment for electric bicycles according to claim 1, It is characterized in that The halogenated hydrocarbons include C n H m X p , 1≤n≤4, 0≤m≤4, 2≤p≤6, X comprises one of Cl, Br and I; and / or, The insulating medium includes at least one of insulating oil, fluorinated liquid, synthetic ester and chlorinated paraffin.

3. The fully submerged power battery integrated equipment for electric bicycles according to claim 2, It is characterized in that The insulating oil includes at least one of mineral oil, silicone oil and vegetable oil.

4. The fully submerged power battery integrated equipment for electric bicycles according to claim 2, It is characterized in that The fluorinated liquid includes at least one of a perfluorinated compound and a hydrofluoroether.

5. The fully submerged power battery integrated equipment for electric bicycles according to claim 2, It is characterized in that The synthetic ester includes at least one of phosphate ester, fatty acid ester and polyester.

6. The fully submerged power battery integrated equipment for electric bicycles according to claim 2, It is characterized in that The chlorinated paraffin includes one of chlorinated paraffin 42 and chlorinated paraffin 52.

7. A fully submerged power battery integrated equipment for an electric bicycle according to any one of claims 1 to 6, It is characterized in that The box body comprises: A connection port, provided on the box body, for charging or discharging the battery cell; A liquid injection port is provided on the box body and is used for injecting the cooling liquid into the accommodating space.

8. The fully submerged power battery integrated equipment for electric bicycles according to claim 7, It is characterized in that The box body also includes a fixing member, which is arranged in the accommodating space and is used to fix the battery core.

9. An electric two-wheeled vehicle, It is characterized in that The electric two-wheeled vehicle comprises the fully submerged power battery integrated equipment for electric bicycles according to any one of claims 1-8.

10. An electric tricycle, It is characterized in that The electric tricycle comprises the fully submerged power battery integrated equipment for electric bicycles as described in any one of claims 1-8.

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