Three-dimensional heat dissipation battery box

Abstract

The utility model discloses a three-dimensional heat dissipation battery box, and relates to the field of battery boxes, the three-dimensional heat dissipation battery box comprises a box body with two open ends and end parts for sealing the two open ends, the box body is composed of an upper plate, a lower plate and two side plates, and the hollow part in the box body forms a battery bin; partition plates for connecting the upper plate and the lower plate are arranged in the battery compartment at intervals, and the partition plates divide the battery compartment into a plurality of sub-compartments for placing batteries; positive wave-shaped flow channels and negative wave-shaped flow channels which penetrate through the partition plates and the upper plate and the lower plate are alternately arranged in the box body, the wave shapes of the positive wave-shaped flow channels and the negative wave-shaped flow channels are upside down, and the positive wave-shaped flow channels and the negative wave-shaped flow channels are matched to at least pass through the top faces, the bottom faces and one side faces of the sub-bins. Openings in one ends of the positive wave-shaped flow channel and the negative wave-shaped flow channel are formed in one side of the upper plate, and openings in the other ends are formed in one side of the lower plate. According to the battery box, liquid cooling and the battery box body are integrated, the integration level is high, and the heat dissipation efficiency is good.

Description

Technical Field

[0001] This application relates to the field of battery boxes, and particularly to a battery box with three-dimensional heat dissipation. Background Art

[0002] In the fields of electric vehicles and energy storage devices, the heat dissipation performance of battery boxes is a key factor affecting battery efficiency and safety. The existing battery box heat dissipation technologies mainly adopt surface contact heat transfer methods, that is, through the contact between a cooling plate or a heat sink and the battery surface, the heat is conducted to the heat dissipation device, and then the heat is carried away by a cooling medium. This method is relatively simple in design and low in cost, so it is widely used in various battery systems. However, with the continuous improvement of battery capacity and power density, the existing surface contact heat transfer method gradually exposes its limitations and deficiencies.

[0003] The main problems of the surface contact heat transfer method lie in the limited heat transfer area and insufficient heat transfer efficiency. Since this method only relies on the contact between the battery surface and the heat sink or the cooling plate, the heat conduction path is relatively single, and it is difficult to cover the entire surface of the battery. Especially in the internal and edge areas of the battery, heat is easily accumulated and cannot be effectively dissipated. This heat accumulation phenomenon will not only cause local overheating of the battery, affecting the performance and life of the battery, but also may lead to more serious safety problems, such as thermal runaway. In addition, the heat dissipation efficiency of the surface contact heat transfer method is limited by the contact area. When the battery operates in a high-load or high-temperature environment, the existing technology is difficult to effectively export the heat quickly, resulting in an overall increase in the battery temperature.

[0004] The fundamental reason for these deficiencies lies in the inherent characteristics of the surface contact heat transfer method. Since its heat transfer method relies on surface contact, it cannot make full use of the internal space and structure of the battery box, and the heat dissipation path is limited, resulting in uneven heat dissipation effects. At the same time, with the increase in the complexity and power density of the battery system, the existing surface contact heat dissipation technology has been difficult to meet the growing heat dissipation requirements, further exposing its deficiencies in efficient thermal management. This limitation in design makes the existing technology prone to heat dissipation bottlenecks under long-term and high-intensity working conditions, affecting the long-term stability and reliability of the battery.

[0005] Therefore, it is of great significance to develop a new heat dissipation technology that can break through the limitations of surface contact heat transfer. Summary of the Utility Model

[0006] The purpose of this application is to at least overcome one deficiency existing in the prior art, and provide a battery box with three-dimensional heat dissipation, which integrates liquid cooling with the battery box itself, has a high integration degree and good heat dissipation efficiency.

[0007] To achieve the above object, the present application discloses a battery box with three-dimensional heat dissipation, which includes a box body with two open ends and end parts for sealing the two open ends. Among them, the box body is composed of an upper plate, a lower plate and two side plates, and there is a hollow battery compartment inside the box body; partitions connecting the upper plate and the lower plate are arranged at intervals in the battery compartment, and the partitions divide the battery compartment into several sub-compartments for placing batteries; positive waveform channels and reverse waveform channels that run through between the partitions and the upper plate and the lower plate are alternately arranged inside the box body, and the waveforms of the positive waveform channels and the reverse waveform channels are upside down, so that the positive waveform channels and the reverse waveform channels cooperate to pass at least through the top surface, bottom surface and one side surface of the sub-compartments; one end of the positive waveform channels and the reverse waveform channels opens on one side of the upper plate, and the other end opens on one side of the lower plate.

[0008] In some embodiments, the positive waveform channels and the reverse waveform channels are connected in parallel and then connected to an external liquid cooling circulation device.

[0009] In some embodiments, sawtooth plates are provided at the openings at one end of the positive waveform channels and the reverse waveform channels, and the sawtooth plates are used to achieve inlet liquid turbulence, so as to improve the heat exchange efficiency of the coolant in the positive waveform channels and the reverse waveform channels.

[0010] In some embodiments, a silica gel layer for heat conduction is attached to the inner wall surface of the sub-compartment.

[0011] Compared with the prior art, through the upside-down cooperation of the positive waveform channels and the reverse waveform channels, the present application can achieve three-dimensional heat dissipation in multiple directions inside the battery box, greatly increase the heat exchange area, significantly improve the heat dissipation efficiency, and effectively avoid the problem of local heat accumulation.

[0012] The beneficial effects listed above do not exhaust all the advantages. Other potential beneficial effects and detailed technical implementation manners will be further revealed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] After reading the following specific embodiments in conjunction with the drawings, various aspects of the present disclosure will be better understood. In the drawings, the positions, sizes and ranges of the various structures shown sometimes do not represent the actual positions, sizes and ranges, etc. In the drawings:

[0014] Figure 1 is a schematic structural diagram of an embodiment disclosed in the present application.

[0015] Figure 2 is a schematic structural diagram of the box body in an embodiment disclosed in the present application.

[0016] Figure 3 is Figure 1 the cross-sectional structural diagram of A-A in

[0017] Figure 4 isFigure 1 Schematic cross-sectional structure diagram taken along line B-B Detailed implementation manners

[0018] The present disclosure will be described below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown. However, 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 fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0019] It should be understood that in all the drawings, the same reference numerals denote the same elements. In the drawings, for the sake of clarity, the dimensions of some features may be deformed.

[0020] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0021] The singular forms "a", "the", and "said" used in the specification include the plural forms unless clearly specified. The terms "including", "comprising", and "containing" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the related listed items. Embodiment

[0022] As Figures 1 to 4 shown, this embodiment provides a battery box with three-dimensional heat dissipation, which is composed of the following components: a box body 1, an end portion 2, a battery compartment 3, a sub-compartment 4, an upper plate 5, a lower plate 6, a partition plate 7, a side plate 8, a positive waveform flow channel 9, and a negative waveform flow channel 10. The following will describe in detail each component and the cooperation relationship between them, and additional details such as material selection, processing technology, and installation and maintenance will be added to ensure that those skilled in the art can fully understand and implement this technical solution.

[0023] First, the box body 1 is composed of an upper plate 5, a lower plate 6, and two side plates 8, forming a structure with two open ends. The two ends of the box body 1 are sealed by the end parts 2 to ensure the structural stability and sealing of the entire battery box. The battery compartment 3 is located inside the box body 1 and has a hollow structure for accommodating and fixing multiple battery modules. The inside of the battery compartment 3 is divided into several sub-compartments 4 by partition plates 7, and each sub-compartment 4 is used to place one or more battery modules. The partition plates 7 connect the upper plate 5 and the lower plate 6 along the height direction of the battery box 1 and cooperate with the side plates 8 to ensure the structural stability of the sub-compartments 4.

[0024] In terms of materials, the upper plate 5, the lower plate 6, and the side plates 8 are made of aluminum alloy with high thermal conductivity and are anodized to enhance their thermal conductivity and corrosion resistance. The partition plates 7 are also made of aluminum alloy and are integrally fixed with the upper plate 5 and the lower plate 6.

[0025] To achieve efficient heat dissipation, in this embodiment, positive waveform channels 9 and reverse waveform channels 10 are alternately arranged in the battery compartment 3. Both the positive waveform channels 9 and the reverse waveform channels 10 run between the partition plates 7 and the upper plate 5 and the lower plate 6, and their waveform structures are designed to be upside down, so that the positive waveform channels 9 and the reverse waveform channels 10 can cooperate effectively. When the coolant flows through the channels, it can cover the top surface, bottom surface, and one side surface of the sub-compartments 4, forming a three-dimensional heat dissipation path. Specifically, one end opening of the positive waveform channel 9 is located on one side of the upper plate 5, and the other end opening is located on one side of the lower plate 6; the opening direction of the reverse waveform channel 10 is opposite to that of the positive waveform channel 9, so that the coolant can flow smoothly in the entire channel system.

[0026] Furthermore, the inner walls of the positive waveform channels 9 and the reverse waveform channels 10 are finely polished to reduce the liquid flow resistance and ensure the smooth flow of the coolant in the channels, thereby improving the heat transfer efficiency.

[0027] Measures to further improve the heat dissipation performance include setting serrated plates (not shown in the figure) at the openings at the liquid inlet ends of the positive waveform channels 9 and the reverse waveform channels 10 as turbulators, whose function is to change the flow path of the coolant and increase the turbulence effect of the fluid, thereby improving the heat transfer efficiency between the liquid and the inner wall of the channels.

[0028] To optimize heat conduction, in this embodiment, a thermal conductive silicone layer (not shown in the figure) is pasted on the inner wall of the sub-compartment 4. The thermal conductive silicone layer is made of silicone material with a high thermal conductivity coefficient and is closely attached to the inner wall of the sub-compartment 4 through a hot pressing process. The thickness of the thermal conductive silicone layer is accurately calculated to ensure good heat conduction effect without affecting the installation and fixation of the battery modules. Through the thermal conductive silicone layer, the heat generated by the battery modules can be quickly conducted to the coolant flowing in the positive waveform channels 9 and the reverse waveform channels 10, thereby achieving efficient heat dissipation.

[0029] In addition, except for the two sub-compartments 4 that cooperate with the side of the box body 1, cooling channels are provided on all four surfaces of all other sub-compartments 4. These channels include a positive waveform channel 9 and a reverse waveform channel 10 located between the upper plate 5, the lower plate 6, and the two side plates 8. Through this design, the coolant can cover the four surfaces of most of the battery modules in the battery compartment 3, ensuring an all-round heat dissipation effect and effectively avoiding the problem of local overheating.

[0030] To ensure the operability and maintenance convenience of the overall design, the design of the battery box takes into account the installation and maintenance requirements. The battery modules are fixed in the sub-compartments 4 by snap fasteners or bolts. During installation, ensure the close contact between the battery modules and the thermal conductive silicone layer. The battery box is designed as a detachable structure, facilitating the replacement and maintenance of the battery modules when needed. The sealing at the end 2 uses high-quality rubber or silicone seals to ensure no leakage in a high-voltage working environment.

[0031] In practical applications, the battery box can be connected to an external liquid cooling circulation device, and the external liquid cooling circulation system continuously provides coolant to ensure the safety and stability of the battery modules under long-term high-load working conditions. Users can adjust the flow rate of the coolant according to actual needs, thereby precisely controlling the temperature inside the battery box and ensuring that the battery always operates within the optimal temperature range.

[0032] Through the above design, the battery box in this embodiment achieves an efficient three-dimensional heat dissipation effect by optimizing the structural design, material selection, channel design, and coolant flow path. This battery box is particularly suitable for the power batteries of electric vehicles and other energy storage systems that require efficient heat dissipation, helping to extend the battery life and improve the overall safety and reliability of the system.

[0033] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand 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 protection scope 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 three-dimensional heat dissipation battery box, characterized in that: include: A box body with two open ends and ends that seal the two open ends, wherein the box body is composed of an upper plate, a lower plate and two side plates, and a hollow battery compartment is formed in the box body; a partition connecting the upper plate and the lower plate is arranged in the battery compartment, and the partition divides the battery compartment into a plurality of sub-compartments for placing batteries; positive waveform flow channels and reverse waveform flow channels passing between the partition and the upper plate and the lower plate are alternately arranged in the box body, and the waveforms of the positive waveform flow channel and the reverse waveform flow channel are reversed upside down, so that the positive waveform flow channel and the reverse waveform flow channel cooperate to pass through at least the top surface, the bottom surface and one side surface of the sub-compartment; one end of the positive waveform flow channel and the reverse waveform flow channel opens on one side of the upper plate, and the other end opens on one side of the lower plate.

2. A three-dimensional heat dissipation battery box as claimed in claim 1, characterized in that: The positive wave flow channel and the reverse wave flow channel are connected in parallel and then connected to an external liquid cooling circulation device.

3. A three-dimensional heat dissipation battery box as claimed in claim 1, characterized in that: A serrated plate is provided at one end opening of the positive waveform flow channel and the reverse waveform flow channel, and the serrated plate is used to realize liquid inlet turbulence, thereby improving the heat exchange efficiency of the coolant in the positive waveform flow channel and the reverse waveform flow channel.

4. A three-dimensional heat dissipation battery box as claimed in claim 1, characterized in that: A heat-conducting silicone layer is attached to the inner wall surface of the sub-chamber.

Images