Battery barrel and electric vehicle

Abstract

The utility model relates to the field of electric vehicles, in particular to a battery barrel and an electric vehicle. The battery barrel is used for the electric vehicle and comprises a barrel body and a connecting assembly, the barrel body is made of semi-hard foaming materials, and the wall thickness of the barrel body ranges from 7 mm to 15 mm. The outer surface of the barrel body is provided with at least one instrument installation area, the instrument installation area is provided with the connecting assembly to fix an instrument, and the connecting assembly is inserted into the side wall of the barrel body in the wall thickness direction of the barrel body. According to the battery barrel provided by the invention, the barrel body of the battery barrel is made of the semi-hard foaming material, so that the weight is lighter; the thickness of the barrel body is relatively large, and the barrel body has the effects of sound insulation, heat preservation and impact resistance; due to the thickness of the barrel body, the connecting assembly can be inserted into the side wall of the barrel body to fix related instruments, and therefore the overall assembly structure is more compact.

Description

Technical Field

[0001] This application relates to the field of electric vehicles, and in particular to a battery pack and an electric vehicle. Background Technology

[0002] Electric vehicles are vehicles powered by electric motors. They are equipped with power batteries that supply power to the motors, propelling the vehicle forward or backward. To facilitate battery installation and replacement, the vehicles have battery compartments where the power batteries can be stored. However, existing battery compartments are heavy, do not insulate against noise, and cannot keep the batteries warm in low ambient temperatures. Furthermore, the thin walls of the battery compartments prevent the installation of related equipment. Utility Model Content

[0003] The purpose of this application is to provide a battery box and an electric vehicle to solve the problems of existing battery boxes being too heavy, not soundproof, not heat-insulating, and unable to install related instruments.

[0004] This application provides a battery can for an electric vehicle, the battery can including a can body and a connecting component;

[0005] The barrel body is formed of a semi-rigid foam material, and the wall thickness of the barrel body is between 7mm and 15mm;

[0006] The outer surface of the barrel is provided with at least one instrument mounting area, and the instrument mounting area is provided with the connecting component to fix the instrument, and the connecting component is inserted into the side wall of the barrel along the wall thickness direction of the barrel.

[0007] In the above technical solution, the barrel body is further formed of foamed polypropylene.

[0008] In the above technical solution, the connecting component further includes at least one self-tapping screw.

[0009] In the above technical solution, the barrel body is further provided with a connecting hole, which is used to connect the frame of the electric vehicle.

[0010] In the above technical solution, a pre-embedded ring is further provided inside the connecting hole.

[0011] The above technical solution further includes a heat dissipation device;

[0012] The barrel has an installation port, which is opposite to the heat-generating area of ​​the battery, and the heat dissipation device is embedded in the installation port.

[0013] In the above technical solution, the heat dissipation device is further provided with a limiting groove in the circumference, and the mounting port is provided with a limiting countersunk platform in the circumference. The limiting countersunk platform is placed in the limiting groove, and the inner surface of the heat dissipation device does not protrude from the inner wall of the barrel.

[0014] Furthermore, the above technical solution also includes a temperature sensor;

[0015] The temperature sensor is installed inside the barrel to detect the battery temperature;

[0016] The instrument includes a controller, and the temperature sensor is electrically connected to the controller;

[0017] When the battery temperature reaches a preset temperature, the temperature sensor communicates with the controller to cause the controller to cut off the power supply to the electric vehicle and control the heat dissipation device to turn on.

[0018] Furthermore, the above technical solution also includes an alarm device;

[0019] The alarm device is electrically connected to the controller. When the battery temperature reaches the preset temperature, the temperature sensor is communicatively connected to the controller to activate the alarm device.

[0020] This application also provides an electric vehicle, including the battery pack described in the above-described solution.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] The battery compartment provided in this application is made of semi-rigid foam material to make it lighter; the thickness of the compartment is relatively thick, which has the functions of sound insulation, heat insulation and impact resistance; the thickness of the compartment allows the connecting components to be inserted into the side wall of the compartment to fix the relevant instruments, thereby making the overall assembly structure more compact.

[0023] This application also provides an electric vehicle, including the battery pack described in the above solution. Based on the above analysis, it is clear that the electric vehicle also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1A first structural schematic diagram of the battery pack provided in this application;

[0026] Figure 2 A schematic diagram of the second structure of the battery pack provided in this application;

[0027] Figure 3 A schematic diagram of the first assembly structure of the battery pack and the vehicle frame provided in this application;

[0028] Figure 4 This is a schematic diagram of the second assembly structure of the battery pack and the vehicle frame provided in this application.

[0029] In the diagram: 101-Barrel body; 102-Controller; 103-Speaker; 104-Connection hole; 105-Frame; 106-Notch; 107-Gap; 108-Platform; 109-Embedded ring; 110-Mounting port; 111-Miniature fan; 112-Limiting groove; 113-Limiting recess. Detailed Implementation

[0030] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Example 1

[0034] See Figures 1 to 4As shown, the battery pack provided in this application is used for electric vehicles. The battery pack includes a body 101 and a connecting assembly. The battery of the electric vehicle is placed inside the body 101, and the connecting assembly is used to install the instrument outside the body 101.

[0035] The barrel 101 is formed of semi-rigid foam material, and the wall thickness of the barrel 101 is between 7mm and 15mm. At least one instrument mounting area is provided on the outer surface of the barrel 101. The instrument mounting area is provided with a connecting component to fix the instrument, and the connecting component is inserted into the side wall of the barrel 101 along the wall thickness direction.

[0036] Specifically, the battery casing 101 is made of semi-rigid foam material. Due to the lower density of foam material, a battery casing 101 of the same volume made of foam material is lighter than one made of PP plastic. To ensure sufficient strength, the casing 101 is relatively thick, but its thick-walled structure does not significantly affect the weight. The thick-walled casing 101 provides sound insulation. Furthermore, in low ambient temperatures, the thick-walled casing 101 helps to keep the battery warm.

[0037] Furthermore, the wall thickness of the barrel 101 is between 7mm and 15mm. The connecting assembly can be inserted into the side wall of the barrel 101 from the outside to secure the instrument to the outside of the barrel 101, resulting in a more compact overall assembly structure. The wall thickness of the barrel 101 also ensures that the connecting assembly will not penetrate the side wall and thus affect battery placement. The instrument may include a controller 102, a speaker 103, and other related components. The number and location of the instrument mounting areas can be set according to actual needs.

[0038] In an optional embodiment, the barrel 101 is formed of foamed polypropylene.

[0039] In this embodiment, expanded polypropylene (EPP) is a highly crystalline polymer / gas composite material that has higher mechanical strength compared to EPS (expanded polystyrene). EPP is lightweight, elastic, shock-resistant, pressure-resistant, has a high deformation recovery rate, good absorption performance, is oil-resistant, acid-resistant, alkali-resistant, resistant to various chemical solvents, non-absorbent, insulating, heat-resistant (-40~130℃), non-toxic, odorless, and 100% recyclable with almost no performance degradation, making it an environmentally friendly foam plastic.

[0040] Specifically, compared to existing PP plastic battery cases, EPP battery cases can reduce weight by 80%. Specifically, an EPP battery case weighs 150 grams, while a PP plastic battery case of the same volume weighs 760 grams. The cost of EPP battery cases is reduced by 60%, as the EPP foaming mold uses aluminum molds, significantly reducing mold costs and simplifying the equipment structure. As a cushioning material, EPP battery cases can significantly reduce sound insulation and impact resistance, improving user experience. Simultaneously, EPP material has excellent thermal insulation properties, maintaining battery stability in cold winter environments.

[0041] In an optional embodiment, the connecting component includes at least one self-tapping screw.

[0042] In this embodiment, the number of self-tapping screws included in the connecting assembly needs to be determined based on the instrument installed in the corresponding instrument mounting area. For example, for the speaker 103, which has two mounting holes, two self-tapping screws are needed in the instrument mounting area where the speaker 103 is installed. These two self-tapping screws pass through the two mounting holes and are screwed into the side wall of the barrel 101 to secure the speaker 103. For instruments with other numbers of mounting holes, the corresponding number of self-tapping screws can be used to secure the instrument.

[0043] In an optional embodiment, the battery box 101 is provided with a connection hole 104, which is used to connect to the frame 105 of the electric vehicle, thereby fixing the battery box to the frame 105.

[0044] In this embodiment, such as Figure 3 and Figure 4 As shown, the battery compartment is located opposite the saddle of the electric vehicle, so the shape of the edge of the compartment 101 matches the shape of the saddle. A notch 106 is provided at the front of the compartment 101 to provide installation space for the saddle's mounting hinge. A notch 107 is provided at the rear of the compartment 101 to provide installation space for the saddle lock.

[0045] Furthermore, on both sides of the notch 106, the battery box 101 is provided with two connecting holes 104, and the frame 105 is provided with two corresponding fixing holes at these locations. Bolts pass through the connecting holes 104 and the fixing holes to connect the battery box to the frame 105. A platform 108 is provided at the rear of the battery box 101, and the platform 108 is provided with three connecting holes 104. The frame 105 is provided with three corresponding fixing holes at these locations. Bolts pass through the connecting holes 104 and the fixing holes to connect the battery box to the frame 105, which can further install and fix the battery box.

[0046] In an optional embodiment, a pre-embedded ring 109 is provided inside the connecting hole 104.

[0047] In this embodiment, due to the low density of the foamed material, to ensure a reliable connection between the frame 105 and the battery box 101, a plastic ring can be pre-embedded in the connection hole 104 to facilitate screw installation and prevent damage to the connection hole 104. Preferably, the frame 105 is provided with a positioning post, which has a threaded hole. The positioning post is placed inside the pre-embedded ring 109, and bolts are screwed into the threaded hole from the side of the battery box 101 to connect the battery box and the frame 105, which can reliably position the battery box.

[0048] In an optional embodiment, the battery compartment also includes a heat dissipation device; the compartment body 101 has an installation port 110, and the installation port 110 is opposite to the heat-generating area of ​​the battery, and the heat dissipation device is embedded in the installation port 110.

[0049] In this embodiment, in addition to the temperature control system, the electric vehicle also incorporates a heat dissipation device to achieve active heat dissipation. The heat dissipation device can be a micro fan 111 or heat pipe technology, which automatically activates when the battery temperature exceeds a set threshold, effectively dissipating the heat generated by the battery, preventing overheating, and ensuring battery safety.

[0050] In an optional embodiment, a limiting groove 112 is provided circumferentially for the heat dissipation device, and a limiting platform 113 is provided circumferentially for the mounting port 110. The limiting platform 113 is placed in the limiting groove 112, and the inner surface of the heat dissipation device does not protrude from the inner wall of the barrel 101.

[0051] In this embodiment, such as Figure 2 As shown in the figure, the heat dissipation device is a miniature fan 111, and the outline of the miniature fan 111 is square. The mounting port 110 on the barrel 101 is also square. The four corners of the shell of the miniature fan 111 are provided with limiting grooves 112, and the four corners of the mounting port 110 are correspondingly provided with four limiting recesses 113. When the miniature fan 111 is installed in the mounting port 110, the four limiting recesses 113 are inserted into the four limiting grooves 112 to achieve positioning of the miniature fan 111. The limiting recesses 113 are recessed relative to the inner wall of the barrel 101, so the miniature fan 111 can be embedded in the mounting port 110 and the inner surface of the miniature fan 111 does not protrude from the inner wall of the barrel 101, thus not occupying the internal space of the barrel 101 and affecting the installation of the battery.

[0052] Optionally, the miniature fan 111 can be connected to the barrel 101 by bolts passing through the mounting holes at the four corners of the miniature fan 111 and the limiting countersunk platform 113, thereby further installing and fixing the miniature fan 111.

[0053] Example 2

[0054] The battery compartment in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0055] In an optional embodiment, the battery compartment also includes a temperature sensor; the temperature sensor is installed inside the compartment 101 to detect the battery temperature; the instrument includes a controller 102, and the temperature sensor is electrically connected to the controller 102; when the battery temperature reaches a preset temperature, the temperature sensor communicates with the controller 102 to enable the controller 102 to cut off the power supply to the electric vehicle and control the cooling device to turn on.

[0056] In this embodiment, a temperature sensor installed inside the battery compartment can monitor the battery temperature in real time while the electric vehicle is running. In case of an emergency, such as battery overheating or short circuit, the temperature sensor detects that the battery temperature exceeds the set temperature. The controller 102 can cut off the battery output to prevent thermal runaway from causing a fire, and at the same time activate the electric vehicle's cooling system (including the cooling device and the electric vehicle's liquid cooling system) to cool down the battery and prevent the danger from escalating further.

[0057] In an optional embodiment, the battery compartment also includes an alarm device. The alarm device is electrically connected to the controller 102. When the battery temperature reaches a preset temperature, the temperature sensor communicates with the controller 102 to activate the alarm device, thereby alerting the driver and protecting the safety of the personnel.

[0058] Example 3

[0059] This application provides an electric vehicle in embodiment three, which includes the battery pack of any of the above embodiments. Therefore, it has all the beneficial technical effects of the battery pack of any of the above embodiments, which will not be repeated here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A battery holder for electric vehicles, characterized in that, The battery compartment includes a compartment body and a connecting assembly; The barrel body is formed of a semi-rigid foam material, and the wall thickness of the barrel body is between 7mm and 15mm; The outer surface of the barrel is provided with at least one instrument mounting area, and the instrument mounting area is provided with the connecting component to fix the instrument, and the connecting component is inserted into the side wall of the barrel along the wall thickness direction of the barrel.

2. The battery holder according to claim 1, characterized in that, The barrel body is formed of foamed polypropylene.

3. The battery holder according to claim 1, characterized in that, The connecting assembly includes at least one self-tapping screw.

4. The battery holder according to claim 1, characterized in that, The barrel has a connecting hole for connecting the frame of the electric vehicle.

5. The battery compartment according to claim 4, characterized in that, A pre-embedded ring is provided inside the connection hole.

6. The battery compartment according to claim 1, characterized in that, It also includes a heat dissipation device; The barrel has an installation port, which is opposite to the heat-generating area of ​​the battery, and the heat dissipation device is embedded in the installation port.

7. The battery compartment according to claim 6, characterized in that, The heat dissipation device is provided with a limiting groove in the circumference, and the mounting port is provided with a limiting countersunk platform in the circumference. The limiting countersunk platform is placed in the limiting groove, and the inner surface of the heat dissipation device does not protrude from the inner wall of the barrel.

8. The battery compartment according to claim 6, characterized in that, It also includes a temperature sensor; The temperature sensor is installed inside the barrel to detect the battery temperature; The instrument includes a controller, and the temperature sensor is electrically connected to the controller; When the battery temperature reaches a preset temperature, the temperature sensor communicates with the controller to cause the controller to cut off the power supply to the electric vehicle and control the heat dissipation device to turn on.

9. The battery compartment according to claim 8, characterized in that, It also includes alarm devices; The alarm device is electrically connected to the controller. When the battery temperature reaches the preset temperature, the temperature sensor is communicatively connected to the controller to activate the alarm device.

10. An electric vehicle, characterized in that, Includes the battery can as described in any one of claims 1 to 9.

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