Battery box and vehicle

Abstract

The utility model relates to a battery box body and a vehicle. The battery box body comprises an accommodating cavity used for accommodating a battery; the ventilation assembly comprises a heat dissipation channel and an opening and closing piece, the opening and closing piece is arranged on an outlet of the heat dissipation channel, and the heat dissipation channel is used for communicating the accommodating cavity with the external environment so as to perform convection heat dissipation on the battery; the controller is electrically connected with the opening and closing piece and used for controlling the opening degree of the opening and closing piece according to the internal temperature of the containing cavity. According to the battery box body and the vehicle provided by the utility model, the heat dissipation of the battery can be adjusted according to the environment temperature and the working condition, the stability of the battery can be well maintained in a cold or hot environment, the energy consumption of the vehicle is reduced, and the endurance mileage is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery heat dissipation technology, and in particular to a battery box and vehicle. Background Technology

[0002] The power batteries of new energy vehicles generate a large amount of heat during operation or charging and discharging. If not dissipated in time, this can lead to performance degradation, shortened lifespan, and even safety risks. In low-temperature environments, the batteries also need to be heated to ensure they are at a suitable operating temperature. Battery cooling typically employs various methods, including natural air cooling, forced air cooling, and liquid cooling. When heating is required, electric heating films are often used to heat the batteries. Natural air cooling utilizes natural airflow to remove some of the heat from the air surrounding the battery. Forced air cooling uses structures such as fans to force airflow. Liquid cooling involves arranging coolant pipes or plates around the battery module, pumping coolant into the pipes to absorb and remove the heat generated by the battery.

[0003] The power batteries in new energy vehicles are typically installed in battery boxes. These boxes protect the batteries from external impacts, preventing damage from bumps or collisions during driving, reducing the risk of fire and explosion in accidents, and are easy to integrate. Battery boxes generally come in two structures: ventilated and enclosed. Ventilated boxes offer better air cooling but poor insulation under heating conditions, while enclosed boxes provide better insulation but are difficult to cool. The current structure of battery boxes may result in higher energy consumption for temperature control of the power battery, affecting the vehicle's driving range. Utility Model Content

[0004] Therefore, it is necessary to provide a battery box and vehicle to address the problem that the current battery box structure cannot balance heat dissipation and heating conditions, resulting in high vehicle energy consumption.

[0005] In a first aspect, a battery housing is provided, the battery housing comprising:

[0006] A receiving cavity for accommodating a battery; and,

[0007] A ventilation assembly includes a heat dissipation channel and an opening / closing element, the opening / closing element being disposed at the outlet of the heat dissipation channel, the heat dissipation channel being used to connect the receiving cavity and the external environment to perform convective heat dissipation on the battery;

[0008] A controller, electrically connected to the opening and closing member, is used to control the opening degree of the opening and closing member according to the internal temperature of the receiving cavity.

[0009] In one embodiment, the battery housing further includes a temperature sensor electrically connected to the controller for detecting the internal temperature of the housing cavity.

[0010] In one embodiment, the opening and closing component includes a cord winder louver lifting cable and a louver. The louver is disposed at the outlet of the heat dissipation channel, and the cord winder is disposed above the louver. One end of the louver lifting cable is connected to the louver, and the other end is wound around the cord winder. The cord winder is electrically connected to the controller, and the controller is used to control the operation of the cord winder to open or close the louver.

[0011] In one embodiment, the ventilation assembly further includes a motor electrically connected to the controller, and the output shaft of the motor is connected to the rope winder for driving the rope winder to rotate.

[0012] In one embodiment, ventilation holes are provided on the wall of the battery housing.

[0013] In one embodiment, the ventilation opening is covered with a filter screen.

[0014] In one embodiment, the battery housing further includes a position sensor for measuring the opening degree of the opening / closing element, the position sensor being electrically connected to the controller.

[0015] In one embodiment, the battery housing further includes a power source electrically connected to the controller and the ventilation assembly for supplying power to the controller and the ventilation assembly.

[0016] Secondly, a vehicle is provided, comprising:

[0017] A battery for powering the vehicle;

[0018] The battery housing as described in the first aspect or any embodiment of the first aspect is used to house the battery.

[0019] In one embodiment, the vehicle further includes a battery health management system electrically connected to the controller of the battery housing for acquiring the temperature of the battery, and the controller of the battery housing for controlling the opening degree of the opening and closing mechanism based on the temperature of the battery.

[0020] The battery pack and vehicle described above utilize a controller to adjust the opening of the opening mechanism based on the internal temperature of the housing. This allows the cooling effect of the ventilation components to be adjusted in real time according to the battery's operating status and temperature changes, providing flexible control and preventing overheating or undercooling. This ensures the battery operates within a suitable temperature range. The cooling channel connects the housing to the external environment, enabling air convection within the housing for natural convection cooling of the battery. Air circulates through the outlet of the cooling channel, further enhancing the convection cooling effect. The opening degree of the cooling channel is controlled by the opening mechanism; when the battery temperature drops below a certain level, the opening can be closed or reduced to decrease the entry of outside air, thereby reducing the energy consumption of the heating elements. The battery pack and vehicle described above can adjust battery cooling according to ambient temperature and operating conditions, maintaining battery stability effectively in both cold and hot environments, reducing vehicle energy consumption, and increasing driving range. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a battery box according to an embodiment of the present invention;

[0023] Figure 2 This is a structural block diagram of a battery box provided in one embodiment of the present utility model.

[0024] To make the above and other objects, features, advantages and embodiments of this utility model more apparent and understandable, the appended symbols are explained as follows:

[0025] 1. Housing; 2. Temperature sensor; 3. Battery health management system; 4. Controller; 5. Micro motor; 6. Opening and closing mechanism; 7. Louver lifting cable; 8. Louver; 9. Power battery. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] With the rapid development of new energy vehicles, the number of new energy trucks on the road is also increasing year by year. As the energy supply unit of new energy trucks, the stable performance of the power battery is related to the vehicle's range and performance. Currently, the industry generally adopts a ventilated or enclosed enclosure with power battery water cooling and battery heating film to meet the operating conditions under different seasonal temperatures and battery temperatures. In high-temperature environments or high battery heat environments, this type of solution mainly relies on battery water cooling for cooling, and in low-temperature environments, it mainly relies on heating film to heat the battery. However, the power batteries of new energy trucks have high power and generate a lot of heat. Neither ventilated nor enclosed enclosures can meet the requirements of both operating conditions at the same time, ultimately leading to high power consumption and reduced driving range. This utility model aims to provide a battery case with automatic opening and closing function. Based on the detection of ambient temperature by the internal temperature sensor and the feedback of the battery temperature, the micro motor on the case frame is controlled by the internal controller. This drives the rope winder on the case frame to pull the opening and closing parts (such as louvers) up or down, so that the opening and closing parts (such as louvers) automatically open or close at a certain angle. The ventilation effect and temperature inside the case are adjusted by natural wind, reducing the energy output of water cooling and heating film, and improving the driving range. Figure 1 This is a schematic diagram of the structure of a battery box according to an embodiment of the present invention; Figure 2 This is a structural block diagram of a battery box provided according to an embodiment of the present utility model. Figures 1 to 2 As shown, an embodiment of the present invention provides a battery housing, comprising:

[0033] A receiving cavity, used to house the battery; and,

[0034] The ventilation assembly includes a heat dissipation channel and an opening / closing element 6. The opening / closing element 6 is disposed at the outlet of the heat dissipation channel, which is used to connect the housing cavity and the external environment to dissipate heat from the battery via convection.

[0035] Controller 4 is electrically connected to the opening / closing component 6 and is used to control the opening degree of the opening / closing component 6 according to the internal temperature of the receiving cavity.

[0036] The battery housing 1 can be composed of a frame, bottom wall, side walls, and top wall. Its material can be aluminum alloy, steel, or composite materials, and it can be an upper and lower shell structure. The structural components can be connected by bolts or welding. The battery housing 1 can be fixedly installed at the bottom of the vehicle frame or in other battery installation areas. The receiving cavity can be enclosed by the bottom wall, side walls, and top wall. The ventilation assembly includes a heat dissipation channel and an opening / closing component 6. The heat dissipation channel can include a gap between the battery and the inner wall of the battery housing 1. The outlet of the heat dissipation channel can be an opening on the wall of the battery housing 1. The opening / closing component can be a valve or a sliding door / window structure, driven by a motor, cylinder, or hydraulic cylinder. For example, a sliding door structure can be installed at the outlet of the heat dissipation channel. The door panel is installed on a slide rail or groove. When the opening degree needs to be changed, the door panel can be moved along the slide rail by a motor. Limit switches can also be installed on the slide rail to control the degree of opening and closing. The internal temperature of the cavity can be measured by temperature sensor 2. When the controller 4 obtains the temperature signal, it compares it with the set temperature threshold. When ventilation and heat dissipation are needed, the opening of the opening and closing part 6 can be increased to increase the airflow from the heat dissipation channel outlet and enhance the convection heat dissipation effect. When heat preservation is needed, the opening of the opening and closing part 6 can be reduced to close the heat dissipation channel, so as to avoid excessive heat loss when heating the battery, which would lead to increased vehicle energy consumption.

[0037] The battery housing 1 and the vehicle described above, through the controller 4, adjust the opening degree of the opening and closing component 6 according to the internal temperature of the housing cavity. This allows the heat dissipation effect of the ventilation components to be adjusted in real time according to the battery's operating status and temperature changes, providing flexible control and preventing overcooling or overheating. This ensures the battery operates within a suitable temperature range. The heat dissipation channel connects the housing cavity to the external environment, allowing air to circulate within the housing cavity, achieving natural convection heat dissipation from the battery. Air can circulate through the outlet of the heat dissipation channel, enhancing the convection heat dissipation effect. The opening degree of the heat dissipation channel is controlled by the opening and closing component 6. When the battery temperature is below a certain level, the opening degree can be closed or reduced to decrease the entry of outside air, thereby reducing the energy consumption of the heating components. The battery housing 1 and the vehicle described above can adjust battery heat dissipation according to ambient temperature and operating conditions, maintaining battery stability well in both cold and hot environments, reducing vehicle energy consumption, and increasing driving range.

[0038] In an exemplary embodiment, the battery housing further includes a temperature sensor 2, which is electrically connected to the controller 4 and used to detect the internal temperature of the housing cavity. The temperature sensor 2 can be a thermocouple temperature sensor 2, a thermistor 2, an infrared temperature sensor 2, or other similar types. It can also include temperature sensors used in a Battery Management System (BMS) to collect battery temperature, such as temperature sensors installed at the center, edges, and heat dissipation areas of the battery pack. Multiple temperature sensors 2 can be set according to the heat distribution during battery operation, and heat dissipation channel outlets can be set at different locations on the housing 1 to control the heat dissipation at different locations based on the actual temperature distribution.

[0039] In one exemplary embodiment, the opening / closing component 6 includes a cord winder, a louver lifting cable 7, and a louver 8. The louver 8 is positioned at the outlet of the heat dissipation channel, and the cord winder is positioned above the louver 8. One end of the louver lifting cable 7 is connected to the louver 8, and the other end is wound around the cord winder. The cord winder is electrically connected to a controller 4, which controls the operation of the cord winder to open or close the louver 8. The inclined blades of the louver 8 can both prevent water droplets, dust, or foreign objects from entering and ensure air circulation. A cord winder is a device that controls the raising and lowering and angle of a Venetian blind 8 by winding or releasing a cord. It may include components such as a cord wheel, a housing, a spring mechanism, a braking device, a pivot, and pulleys. The cord wheel is used to wind or release the blind cord. When the cord is pulled, the cord wheel rotates and winds the cord, causing the Venetian blind 8 to rise or fall. The spring mechanism allows the cord to automatically retract after release, keeping the cord from slackening. The braking device is used to lock the cord wheel when the cord is not being pulled, preventing the cord from slipping and thus fixing the position of the Venetian blind 8.

[0040] In an exemplary embodiment, a motor is also included. The motor is electrically connected to the controller 4, and the output shaft of the motor is connected to the rope winder to drive the rope winder to rotate. The motor can be a micro motor with a diameter of less than 100 mm or a power of less than 100 watts, typically composed of a rotor, stator, shaft, windings (coils), magnets, and a housing. When the micro motor 5 is working, the electromagnetic force generated by the windings interacts with the magnetic field, causing the rotor to rotate, thereby converting electrical energy into mechanical energy. The output end of the motor is connected to the rope winder, driving the rope winder to rotate. The micro motor 5 has advantages such as compact structure, high control precision, and energy efficiency, helping to reduce the overall energy consumption of the vehicle.

[0041] In an exemplary embodiment, ventilation holes are provided on the wall of the battery housing 1. The ventilation holes can serve as outlets for heat dissipation channels and can be arranged in various ways, such as grids, lattice, diagonal lines, or stripes. Among these, grids or lattice patterns can provide uniform airflow, while strip arrangements can control the direction of airflow. The hole diameter can be determined according to the actual heat dissipation requirements of the battery. Reinforcing ribs can be provided around the ventilation holes to reduce deformation caused by long-term use and ensure the stability of the housing 1 under vibration conditions.

[0042] In one exemplary embodiment, the ventilation openings are covered with a filter screen. The filter screen may be made of metal, stainless steel, nylon, or other high-temperature resistant composite materials, and is used to block dust, sand, and other debris from entering the device, preventing contamination and clogging, preventing the battery from affecting its heat dissipation efficiency or performance due to dust accumulation, and ensuring air circulation while preventing dust, which helps to dissipate heat and maintain a stable internal temperature of the housing 1.

[0043] In an exemplary embodiment, a position sensor is also included. The position sensor measures the opening degree of the opening element 6, such as the veil 8. The position sensor is electrically connected to the controller 4. It may include a linear position sensor or an angular position sensor, wherein the linear position sensor can detect the displacement of the opening element 6, and the angular position sensor can detect the rotational position or angle of the opening element 6. The position sensor may be a potentiometer-type position sensor, a Hall effect position sensor, a photoelectric position sensor, a magnetostrictive position sensor, or an ultrasonic position sensor, etc. The controller 4 can adjust the position of the opening element 6 based on the position data collected by the position sensor.

[0044] In one exemplary embodiment, a power source is also included, electrically connected to the controller 4 and the ventilation assembly, for supplying power to the controller 4 and the ventilation assembly. The power source may be a vehicle power supply or a separately configured battery.

[0045] In one exemplary embodiment, a fan is also included. The fan can be disposed inside the battery housing 1, with its air outlet facing the outlet of the heat dissipation channel. The fan can be turned on simultaneously when the opening / closing member 6 is opened to accelerate the airflow and improve the efficiency of convection heat dissipation.

[0046] In one exemplary embodiment, see Figure 1This utility model provides a battery box 1 with automatic opening and closing function. It includes: a box 1, a temperature sensor 2, a battery health management system 3, a controller 4, a micro motor 5, a rope winder 6, an opening / closing component (such as a louver 8), a louver lifting cable 7, and a power battery 9. The temperature sensor 2, battery health management system 3, controller 4, and power battery 9 are arranged inside the box 1, while the micro motor 5, rope winder 6, opening / closing component (such as a louver 8), and louver lifting cable 7 are mounted on the frame of the box 1. The battery health management system 3 is used to manage and monitor the battery status, and typically includes a monitoring unit, a control unit, a heat dissipation unit, and a communication unit. In electric vehicles, the battery health management system monitors the status of the power battery pack to ensure the vehicle's range and safety.

[0047] See Figure 2 This utility model provides a control device for a battery box 1 with automatic opening and closing function. It includes: a temperature sensor 2 placed inside the box 1 to monitor the internal temperature of the box 1 in real time; a battery health management system 3 to monitor the temperature of the power battery 9 in real time; and a micro motor 5 installed on the frame of the box 1 to drive a rope winder 6 to rotate. The rope winder 6 drives the opening and closing component (such as a louver 8) and the louver lifting cable 7 to rise or fall, thereby driving the opening and closing component (such as a louver 8) to rotate and realize the opening and closing of the box 1.

[0048] Temperature sensor 2 and battery health management system 3 transmit the internal temperature signal of housing 1 and the temperature signal of power battery 9 to controller 4 in real time. Controller 4, based on the temperature signals provided by temperature sensor 2 and battery health management system 3, performs logic operations and sends a control signal to micro motor 5. Micro motor 5 drives rope winder 6 to rotate, which in turn drives opening and closing component (such as louver 8) louver lifting cable 7 to rise or fall. During the rising or falling of louver lifting cable 7, opening and closing component (such as louver 8) achieves opening and closing at a certain angle, thereby realizing the opening and closing of housing 1.

[0049] In one exemplary embodiment, a vehicle is also provided, comprising:

[0050] Batteries are used to power vehicles;

[0051] As described in the above embodiments, the battery housing 1 is used to house the battery.

[0052] The battery can be a power battery 9, mainly used to provide power for vehicle operation. The vehicle can be a pure electric vehicle or a hybrid vehicle, and in some embodiments, it can be a new energy truck. Since the power battery 9 used in trucks has a large power and generates more heat, installing the truck's power battery 9 in the aforementioned housing 1 can make battery management more efficient and reduce the vehicle's energy consumption.

[0053] In one exemplary embodiment, the vehicle further includes a battery health management system electrically connected to a controller 4 of the battery housing 1 for acquiring the battery temperature. The controller 4 of the battery housing 1 is used to control the opening degree of the opening / closing member 6 based on the battery temperature.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A battery housing, characterized in that, The battery housing includes: A receiving cavity for accommodating a battery; and, A ventilation assembly includes a heat dissipation channel and an opening / closing element, the opening / closing element being disposed at the outlet of the heat dissipation channel, the heat dissipation channel being used to connect the receiving cavity and the external environment to perform convective heat dissipation on the battery; A controller, electrically connected to the opening and closing member, is used to control the opening degree of the opening and closing member according to the internal temperature of the receiving cavity.

2. The battery housing according to claim 1, characterized in that, The battery housing also includes a temperature sensor, which is electrically connected to the controller and is used to detect the internal temperature of the housing cavity.

3. The battery housing according to claim 1, characterized in that, The opening and closing mechanism includes a rope reel, a louver lifting cable, and a louver. The louver is located at the outlet of the heat dissipation channel, and the rope reel is located above the louver. One end of the louver lifting cable is connected to the louver, and the other end is wound around the rope reel. The rope reel is electrically connected to the controller, which controls the movement of the rope reel to open or close the louver.

4. The battery housing according to claim 3, characterized in that, The ventilation assembly also includes a motor, which is electrically connected to the controller, and the output shaft of the motor is connected to the rope winder for driving the rope winder to rotate.

5. The battery housing according to claim 1, characterized in that, Ventilation holes are provided on the wall of the battery box.

6. The battery housing according to claim 5, characterized in that, The ventilation holes are covered with filter screens.

7. The battery housing according to claim 1, characterized in that, The battery housing also includes a position sensor, which is used to measure the opening degree of the opening and closing component, and the position sensor is electrically connected to the controller.

8. The battery housing according to claim 1, characterized in that, The battery housing also includes a power source, which is electrically connected to the controller and the ventilation assembly to supply power to the controller and the ventilation assembly.

9. A vehicle, characterized in that, include: A battery for powering the vehicle; The battery housing as described in any one of claims 1-8, wherein the battery housing is used to house the battery.

10. The vehicle according to claim 9, characterized in that, It also includes a battery health management system, which is electrically connected to the controller of the battery housing and is used to acquire the temperature of the battery. The controller of the battery housing is used to control the opening degree of the opening and closing parts according to the temperature of the battery.

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