Battery box with air inlet layer

Abstract

The utility model discloses a battery box with an air inlet layer, and relates to the field of new energy automobiles, the battery box comprises a box body with an open upper end and a cover plate for sealing the open surface of the box body, at least one air inlet and at least one air outlet are formed in the front end of the box body in order to realize air cooling heat dissipation in the box body in a normal state, and the air inlet and the air outlet are communicated with the box body. The air inlet and the air outlet are connected out through a pipeline to achieve air inlet and air outlet, and a fan assembly which is connected with the air inlet and used for achieving circulating heat exchange is arranged in the box body. Integral or local enhanced heat dissipation is realized on the basis of traditional cold air heat dissipation. According to the battery box, the cold air plate is additionally arranged in the battery box, and an external cold air source is combined, so that local or whole battery enhanced heat dissipation is realized. And the cold air plate can flexibly guide cold air into different areas in the battery box through multi-area regulation and control, so that heat dissipation is effectively enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, and in particular to a battery box with a space-time wind layer. BACKGROUND

[0002] The existing battery cooling technology mainly relies on two ways of air cooling and liquid cooling. The air-cooled battery box realizes temperature control through natural heat exchange between the battery box and the external air. During vehicle driving, external air flows through the surface of the battery box, and part of the heat of the battery is taken away through heat exchange, thereby realizing the heat dissipation of the battery. The advantage of the air-cooled system is that it has simple structure and low cost, but due to the dependence on natural convection and external airflow, its heat dissipation efficiency is relatively low, especially in high load or high temperature environment, the heat dissipation effect is difficult to meet the cooling demand of the battery. The liquid cooling system adopts cooling liquid circulating in the battery box, which can provide relatively efficient and uniform temperature control effect, and is suitable for the heat dissipation demand of high-performance batteries, but the design of the liquid cooling system is complex and the cost is high, which is usually not suitable for the production of low-cost or mini cars.

[0003] For low-cost or small electric vehicles, although the air-cooled battery box has low cost, its heat dissipation efficiency is insufficient, which easily leads to local overheating of the battery, affecting the performance and life of the battery. While the liquid cooling system can solve this problem, the high cost and complex structure design make it unsuitable for the production needs of these vehicles. Therefore, the existing technology has a certain contradiction between heat dissipation effect and cost, especially for the low-cost vehicle market, how to reduce the production cost under the premise of ensuring the safety and stability of the battery is a problem to be solved. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to at least overcome one deficiency of the prior art, and provide a battery box with an air inlet layer. The battery box realizes local or overall battery enhanced heat dissipation by adding a cold air plate inside the battery box and combining with an external cold air source. The cold air plate can be controlled through multiple regions, and can flexibly guide cold air into different regions inside the battery box, effectively enhancing heat dissipation and improving the temperature control effect of the battery. Compared with the traditional natural cooling method, this technology can overcome the problem of insufficient heat dissipation capacity through local air flow enhancement, while maintaining low cost, and provides a more effective battery cooling solution.

[0005] To achieve the above object, the application discloses a battery box with an air inlet layer, which comprises an open-ended box body and a cover plate sealing the open surface of the box body. To achieve air cooling and heat dissipation in the normal state inside the box body, at least one air inlet and at least one air outlet are arranged at the front end of the box body, the air inlet and the air outlet are connected by a pipeline to realize air inlet and air outlet, and a fan assembly for realizing circulating heat exchange is arranged in the box body. To realize overall or partial enhanced heat dissipation on the basis of traditional cold air heat dissipation, a plurality of cavities and a plurality of independent flow channels are arranged in the cover plate, each cavity is connected with at least one independent flow channel, each independent flow channel is connected with an air inlet with a control valve at the front end of the cover plate, the air inlet is connected with the air conditioning system of the automobile through a heat insulation pipeline, and the bottom surface of the cover plate is provided with an air outlet group opposite to the cavities to form a plurality of air outlet areas on the bottom surface of the cover plate. The control valve of the air inlet can control the opening and closing of each independent flow channel, and at least one temperature sensor is arranged in the air inlet.

[0006] In some embodiments, to improve heat dissipation and heat insulation and flame retardation, the top surface of the cover plate is provided with a flame-retardant heat insulation layer.

[0007] In some embodiments, to further improve the heat dissipation capacity inside the box body when needed, the bottom plate of the box body is provided with a partition layer, the front end of the partition layer is provided with a flow guide opening with opening and closing control, and the tail end is provided with an air outlet with opening and closing control, and a plurality of fins along the flow direction of the flow guide opening and the air outlet are arranged in the partition layer.

[0008] In some embodiments, to ensure the safety of the box body and improve the heat dissipation of the battery, an outer protective rubber layer is arranged on the outer bottom surface of the box body.

[0009] Compared with the prior art, the application has at least one of the following beneficial effects:

[0010] 1. Improve heat dissipation efficiency: by increasing the cold air plate and combining the adjustable air flow system, the cold air can be flexibly introduced into different areas of the battery box, effectively enhancing local heat dissipation and solving the problem of insufficient heat dissipation in high load or high temperature environment in the traditional natural heat dissipation mode.

[0011] 2. Improve temperature control effect: the fan assembly and temperature sensor arranged in the battery box can more accurately adjust the temperature of the battery through intelligent control of air flow, keep the battery within the safe working range, and thus improve the performance and life of the battery.

[0012] 3. Simplify structure and reduce cost: compared with the liquid cooling system, the air cooling system has lower cost and simpler structure. Through the design of flexible air inlet layer and air outlet layer, the technology can ensure efficient heat dissipation while maintaining low production cost, and is particularly suitable for low-cost or small electric vehicles.

[0013] 4. Enhanced safety: The cover plate is provided with a heat insulation layer and a temperature sensor, and a heat insulation protective rubber layer at the bottom, which can effectively prevent high temperature from damaging the battery, increase the safety and durability of the battery box, and ensure stable operation of the battery, especially in high temperature environments.

[0014] The above-listed benefits are not exhaustive of all advantages. Other potential benefits and detailed technical implementations will be further disclosed in the embodiments or other description sections of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings, in which:

[0016] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure.

[0017] Figure 2 is a structural schematic diagram of an embodiment of the present disclosure from another perspective.

[0018] Figure 3 is an enlarged view of A in Figure 2

[0019] Figure 4 is a structural schematic diagram of an embodiment of the present disclosure from yet another perspective.

[0020] Figure 5 is a sectional structural schematic diagram of an embodiment of the present disclosure, in which a fan assembly is shown. DETAILED DESCRIPTION

[0021] The present disclosure will be described below with reference to the accompanying drawings, which show several embodiments of the present disclosure. It should be understood that the present disclosure can be presented in many different ways, and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete, and to fully inform those skilled in the art of the scope of protection of the present disclosure. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0022] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the size of some features can be distorted for the sake of clarity.

[0023] ​It is to be understood that the words used in the specification intend to describe and should not be construed in a limiting sense. The disclosure is directed to each feature, combination of features and method of the disclosure in all its aspects singularly and collectively, and each of the possible combinations and permutations of the many features and aspects of the disclosure, as would be understood by one of ordinary skill in the art. The language used is merely descriptive of illustrative embodiments and does not limit the scope of the disclosure, which is defined solely by the claims.

[0024] The singular forms "a," "said," and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprises," "comprising," and "containing" as used herein, indicate the presence of stated features but do not preclude the presence or addition of one or more other features. The term "and / or" as used herein encompasses any and all combinations of one or more of the associated listed items. Embodiments

[0025] Reference to the Drawings Figures 1-5 In this embodiment, a battery box with an air inlet layer is provided, which is mainly used for battery heat dissipation in new energy vehicles. In order to effectively control the battery temperature under various use conditions, the battery box adopts air cooling method, combined with the cold air flow provided by the vehicle air conditioning system, further enhancing the heat dissipation effect. In addition, in low temperature environment, the temperature management of the battery box can also be optimized through temperature control design, to ensure the efficient operation and safety of the battery.

[0026] The overall structure of the battery box includes a box body, a cover plate, an air inlet, an air outlet, a fan assembly, a cavity, independent flow channels, a control valve, a temperature sensor, a flow guide port, and heat dissipation fins. The front end of the box body 1 is provided with at least one air inlet 3 and an air outlet 4. The air inlet 3 and the air outlet 4 are connected by a pipeline to form an air flow channel, facilitating the entry and exit of air. Inside the box body 1, a fan assembly is provided connected to the air inlet 3, for realizing air circulation and heat exchange, helping the battery to maintain a suitable temperature under normal use.

[0027] The cover plate 2, as an important component of the battery box, its design plays a crucial role in heat dissipation effect. The top surface of the cover plate 2 is provided with a fire-retardant thermal insulation layer, which aims to improve the heat dissipation efficiency and provide additional safety protection. The cover plate 2 is provided with a plurality of cavities 5 and a plurality of independent flow channels 6. Each cavity 5 is connected to at least one independent flow channel 6, which is used to guide cold air or hot air into different areas inside the battery box. The front end of the cover plate 2 is provided with an air inlet with a control valve 7, which is connected to the cold air flow pipeline of the vehicle air conditioning system. When the temperature inside the battery box is too high, the control valve 7 opens, allowing the cold air from the air conditioning system to enter the flow channel 6 inside the cover plate 2 through the air inlet 7, and then evenly distributed to the inside of the battery box through the cavities 5, thereby achieving efficient heat dissipation.

[0028] In addition, the bottom surface of the cover plate 2 is provided with exhaust hole groups 8 corresponding to the cavities 5. Through these exhaust hole groups 8, the cold air flow carries away the heat generated by the battery and exhausts the hot air out of the battery box. In this way, the cover plate 2 not only provides cold air cooling, but also realizes precise temperature control in different areas through the control of the flow channel 6.

[0029] In order to further optimize heat dissipation, the bottom plate of the box body 1 is also provided with a partition layer 9. The front end of the partition layer 9 is provided with a flow guide opening 10 with opening and closing control, and the tail end is provided with an air outlet 12 with opening and closing control. A plurality of heat dissipation fins 11 are arranged in the partition layer 9 along the direction of the flow guide opening 10 and the air outlet 12. These fins 11 help to increase the surface area of air flow and improve heat dissipation efficiency. When the temperature in the battery box is relatively high, the flow guide opening 10 will be opened to promote air circulation, thereby improving the heat dissipation capacity; while in a low temperature environment, the flow guide opening 10 is closed to keep the battery box warm and prevent the temperature from being too low to affect the performance of the battery.

[0030] In a low temperature environment, in order to improve the heat preservation performance of the battery box, the control valve 7 will close the air inlet 7 to prevent external cold air from entering the battery box. At the same time, the control valve 7 can also adjust the opening and closing of the flow channel 6 to guide an appropriate amount of hot air into the battery box to keep the internal temperature of the battery box stable. In this process, the flame-retardant thermal insulation layer provided by the cover plate 2 can effectively isolate the external low temperature and ensure that the temperature in the battery box is within the ideal working range.

[0031] In addition, in order to ensure the safety of the battery box, the outer bottom surface of the box body 1 is also provided with a layer of heat-insulating outer protective rubber layer. This rubber layer not only provides additional thermal insulation effect, but also effectively protects the box body from external environmental factors, enhancing the durability of the battery box.

[0032] In summary, the battery box design of the present embodiment combines the traditional air cooling heat dissipation method with the dual action of the cold air flow and hot air flow of the automobile air conditioning system, providing flexible and efficient temperature control management while ensuring the safety of the battery. The battery box can automatically adjust the air inlet, air outlet and flow channel opening and closing according to the internal temperature of the battery, realizing intelligent heat dissipation and heat preservation, and ensuring the safe, stable and efficient operation of the battery in various environments.

[0033] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included within the scope of protection of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A battery box with an air intake layer, characterized by: The battery box comprises an open-ended box body and a cover plate sealing the open end of the box body, wherein the front end of the box body is provided with at least one air inlet and at least one air outlet, the air inlet and the air outlet are connected by a pipeline to realize air intake and air exhaust, and a fan assembly for realizing cyclic heat exchange is arranged in the box body and connected with the air inlet; in order to realize overall or partial enhanced heat dissipation on the basis of traditional cold air heat dissipation, a plurality of cavities and a plurality of independent flow channels are arranged in the cover plate, each cavity is connected with at least one independent flow channel, each independent flow channel is connected with an air inlet provided with a control valve at the front end of the cover plate, the air inlet is connected with the air conditioning system of the automobile through a heat insulation pipeline, and the cover plate is adapted to the air conditioning system of the automobile; a plurality of air outlet groups corresponding to the cavities are arranged on the bottom surface of the cover plate to form a plurality of air outlet areas on the bottom surface of the cover plate; the control valve of the air inlet can control the opening and closing of each independent flow channel, and at least one temperature sensor is arranged in the air inlet.

2. A battery box with an air intake layer as claimed in claim 1, characterized in that: The top surface of the cover plate is provided with a fire-retardant heat insulation layer.

3. A battery box with an air intake layer as claimed in claim 1, characterized in that: The bottom plate of the box body is provided with a partition, the front end of the partition is provided with a flow guide opening with opening and closing control, and the tail end is provided with an air outlet with opening and closing control, and a plurality of fins are arranged in the partition along the direction of the flow guide opening and the air outlet.

4. A battery box with an air intake layer as claimed in claim 1, characterized in that: The outer bottom surface of the box body is provided with an outer protective rubber layer for heat insulation.

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