Vapor chamber, battery and electric equipment

Abstract

The invention relates to a vapor chamber, a battery and electric equipment, and relates to the technical field of power batteries. The vapor chamber comprises a plate body and radiating fins. The plate body comprises a contact cooling part and an air cooling part, and the contact cooling part and the air cooling part are connected to form an L-shaped structure. The heat dissipation fins are arranged on the air cooling part and used for exchanging heat with airflow. The air cooling part is located above the contact cooling part, the contact cooling part is arranged at the bottom of the battery cell module, and the air cooling part is arranged at the side part of the battery cell module. Wherein at least one first flow channel is arranged in the contact cooling part, at least one second flow channel is arranged in the air cooling part, the first flow channel is communicated with the second flow channel, a phase change material is arranged in the first flow channel, and the phase change material can circulate in the first flow channel and the second flow channel. According to the vapor chamber provided by the invention, the space occupied by the cooling structure in the power battery can be reduced while efficient and uniform cooling of the power battery can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a temperature averaging plate, a battery and an electrical device. Background Art

[0002] During use, power batteries usually need to be equipped with a cooling structure for heat dissipation and cooling. In the prior art, the cooling methods of power batteries usually include air cooling, liquid cooling plate cooling and other methods. Among them, the air cooling method has the advantages of low cost, simple structure and pollution-free, but it also has problems such as poor cooling effect and poor temperature uniformity. Liquid cooling plate cooling has the advantages of good cooling effect and high temperature uniformity, but the liquid cooling plate needs to be equipped with a coolant circulation pipeline during the actual installation process, which not only takes up a large space but also has the risk of leakage.

[0003] Therefore, there is an urgent need to provide a power battery cooling structure that can achieve efficient and uniform cooling of the power battery while reducing the space occupied by the cooling structure within the power battery. Summary of the invention

[0004] The purpose of the present application is to provide a temperature averaging plate, a battery and an electrical device, wherein the temperature averaging plate can achieve efficient and uniform cooling of a power battery while reducing the space occupied by a cooling structure in the power battery.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, an embodiment of the present application provides a temperature equalizing plate for dissipating heat and cooling the battery cell module. The temperature equalizing plate includes a plate body and heat dissipating fins. The plate body includes a contact cooling portion and an air cooling portion, and the contact cooling portion is connected to the air cooling portion and forms an L-shaped structure. The heat dissipating fins are arranged in the air cooling portion, and the heat dissipating fins are used for heat exchange with the airflow. The air cooling portion is above the contact cooling portion, the contact cooling portion is arranged at the bottom of the battery cell module, and the air cooling portion is arranged on the side of the battery cell module. Among them, at least one first flow channel is arranged in the contact cooling portion, at least one second flow channel is arranged in the air cooling portion, the first flow channel is connected to the second flow channel, a phase change material is arranged in the first flow channel, and the phase change material can circulate in the first flow channel and the second flow channel.

[0006] Based on the above-mentioned embodiments of the present application, the temperature equalizer itself constitutes an L-shaped structure, in which the contact cooling part contacts the bottom of the battery cell module, and the heat generated by the battery cell module is transferred to the phase change material in the first flow channel by heat conduction. Based on the characteristics of the phase change material itself, the phase change material undergoes a phase change after absorbing heat, from liquid to gas, and then the gaseous phase change material naturally dissipates into the second flow channel due to the decrease in density, thereby quickly taking away the heat emitted by the battery cell module. By setting the heat dissipation fins, the heat dissipation effect of the air cooling part can be improved, so that the gaseous phase change material can quickly release heat and cool down in the second flow channel to return to the liquid state, and then the liquid phase change material naturally flows back to the first flow channel. Through the cycle of the above process, efficient heat dissipation of the battery cell module is achieved. At the same time, in the above temperature plate structure, the phase change material in the contact cooling part is in liquid state, and the battery cell module is in direct contact with the contact cooling part, so it can have the same advantages as liquid cooling plate cooling, good cooling effect and high temperature uniformity, and at the same time, there is no need to set up a coolant circulation pipeline, which can not only reduce the internal space occupied by the battery, but also avoid the risk of leakage. The setting of the air cooling part further combines the advantages of low cost and simple structure of air cooling.

[0007] In some embodiments, a flow channel surface formed by a plurality of first flow channels is arranged at an angle to a horizontal plane, and the first flow channels are arranged obliquely downward from an end close to the second flow channel to an end away from the second flow channel.

[0008] Based on the above-mentioned embodiments of the present application, by tilting the extension direction of the first flow channel, specifically, tilting downward from one end close to the second flow channel, the phase change material that returns to the liquid state can quickly flow in a direction away from the second flow channel after flowing back from the second flow channel to the first flow channel, thereby avoiding the phase change material from gathering at the junction of the second flow channel and the first flow channel during the backflow process, resulting in a decrease in the temperature uniformity of the contact cooling part, thereby avoiding affecting the heat dissipation effect of the contact cooling part.

[0009] In some embodiments, the angle between the extending direction of the first flow channel and the horizontal direction is α, 1°≤α≤5°.

[0010] Based on the above-mentioned embodiments of the present application, the inclined setting of the first flow channel can facilitate the reflux of the liquid phase change material in the first flow channel. However, when the inclination angle of the first flow channel is too large, on the one hand, it will affect the thickness and strength of the contact cooling part itself, and on the other hand, it will also cause the liquid phase change material to gather at the end of the first flow channel away from the second flow channel, thereby affecting the temperature uniformity of the contact cooling part.

[0011] In some embodiments, the first flow channel is arranged obliquely in the contact cooling portion, or the contact cooling portion is assembled obliquely as a whole, so that the first flow channel is arranged obliquely.

[0012] Based on the above-mentioned embodiments of the present application, the inclined setting of the first flow channel is realized through two different setting methods, so that the phase change material can flow more smoothly in the first flow channel when liquefying and refluxing, thereby improving the distribution uniformity of the phase change material in the first flow channel.

[0013] In some embodiments, at least two first flow channels are provided, and at least two first flow channels are interconnected. At least two second flow channels are provided, and at least two second flow channels are interconnected.

[0014] Based on the above embodiments of the present application, when the first flow channel and the second flow channel are specifically set, by setting the first flow channel and the second flow channel as a plurality, the distribution of the phase change material can be made more uniform, thereby improving the temperature uniformity of the temperature plate. By interconnecting the plurality of first flow channels and the second flow channels, the distribution of the phase change material can be further made more uniform.

[0015] According to the second aspect of the present application, a battery is provided, the battery comprising a housing, a battery cell module and the above-mentioned temperature averaging plate. The battery cell module is arranged in the housing, the temperature averaging plate is arranged in the housing, the contact cooling part is arranged at the bottom of the battery cell module, and the air cooling part is arranged at the side of the battery cell module.

[0016] Based on the above embodiments of the present application, the battery provided by the present application includes the above-mentioned temperature averaging plate, and the temperature averaging plate is provided to dissipate heat and cool the battery module, thereby replacing the air cooling or liquid cooling plate cooling methods commonly provided in the prior art. The above-mentioned setting can not only improve the temperature uniformity of the heat dissipation structure and improve the heat dissipation effect of the battery module, but also reduce the space occupied by the battery, thereby improving the energy density of the battery.

[0017] In some embodiments, an air inlet is provided on the side wall of the housing, and the air inlet is arranged opposite to the heat dissipation fins. A heat dissipation fan is embedded on the side wall of the housing, and the heat dissipation fan is arranged opposite to the heat dissipation fins.

[0018] Based on the above-mentioned embodiments of the present application, by providing an air inlet and a heat dissipation fan, the air circulation speed at the heat dissipation fin position is further enhanced, thereby further improving the heat dissipation effect of the heat dissipation fins.

[0019] In some embodiments, at least one temperature averaging plate is provided, and at least one battery cell module is correspondingly provided on each temperature averaging plate.

[0020] Based on the above-mentioned embodiments of the present application, when the temperature equalizer is specifically set, a whole large temperature equalizer can be set up for heat dissipation and cooling of multiple battery modules at the same time, or multiple small temperature equalizers can be set up, and a separate temperature equalizer can be set up for each battery module for heat dissipation and cooling.

[0021] In some embodiments, a thermally conductive adhesive layer is disposed between the battery core module and the contact cooling portion.

[0022] Based on the above-mentioned embodiments of the present application, by setting the thermal conductive adhesive layer, not only the connection between the contact cooling part and the battery cell module can be strengthened, but also the thermal conductivity between the battery cell module and the contact cooling part can be improved, thereby further improving the heat dissipation and cooling effect of the battery cell module.

[0023] According to a third aspect of the present application, an electrical device is provided, the electrical device comprising a device body and the above-mentioned battery. An energy supply cavity is provided in the device body, and the battery is provided in the energy supply cavity.

[0024] Based on the above-mentioned embodiments of the present application, the electrical equipment provided by the present application includes the above-mentioned battery, and therefore also has the above-mentioned beneficial effects. In order to avoid repetition, they will not be described here.

[0025] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the temperature equalizing plate provided in the embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the internal structure of the temperature equalizing plate provided in an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the battery provided in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of an explosion of a battery provided in an embodiment of the present application.

[0031] Description of Reference Numerals

[0032] 1. Plate; 11. Contact cooling part; 111. First flow channel; 12. Air cooling part; 121. Second flow channel; 13. Heat dissipation fins; 2. Battery module; 3. Shell; 31. Air inlet; 32. Heat dissipation fan. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of this application, it should be noted that, in the absence of any contrary explanation, the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] Power batteries usually need to be equipped with cooling structures for heat dissipation and cooling during use. In the prior art, power battery cooling methods usually include air cooling and liquid cooling plate cooling. Among them, air cooling has the advantages of low cost, simple structure and no pollution, but due to the small heat transfer coefficient on the air side, the heat conduction efficiency in the air cooling room is low, and there are problems such as poor cooling effect and poor temperature uniformity.

[0040] Liquid cooling plate cooling has the advantages of good cooling effect and high temperature uniformity, but the liquid cooling plate needs to be equipped with a coolant circulation pipeline during the actual installation process so that the coolant can circulate and remove heat. The cooling circulation pipeline not only takes up a large space when it is set up, but also has the risk of leakage. Therefore, it is urgent to provide a power battery cooling structure that can achieve efficient and uniform cooling of the power battery while reducing the space occupied by the cooling structure inside the power battery.

[0041] In order to solve the above problems in the prior art, according to the first aspect of the present application, an embodiment of the present application provides a temperature homogenizing plate, referring to Figure 1 and Figure 2 As shown in , the temperature equalizing plate is used to dissipate heat and cool the battery cell module 2, and the temperature equalizing plate includes a plate body 1 and heat dissipation fins 13. The plate body 1 includes a contact cooling portion 11 and an air cooling portion 12, and the contact cooling portion 11 is connected to the air cooling portion 12 to form an L-shaped structure. The heat dissipation fins 13 are arranged in the air cooling portion 12, and the heat dissipation fins 13 are used for heat exchange with the airflow. The air cooling portion 12 is above the contact cooling portion 11, and the contact cooling portion 11 is arranged at the bottom of the battery cell module 2, and the air cooling portion 12 is arranged on the side of the battery cell module 2. Among them, at least one first flow channel 111 is arranged in the contact cooling portion 11, and at least one second flow channel 121 is arranged in the air cooling portion 12, the first flow channel 111 is connected to the second flow channel 121, and a phase change material is arranged in the first flow channel 111, and the phase change material can circulate in the first flow channel 111 and the second flow channel 121.

[0042] Based on the above-mentioned embodiments of the present application, the temperature homogenizing plate itself forms an L-shaped structure, wherein the contact cooling portion 11 contacts the bottom of the battery module 2, and the heat generated by the battery module 2 is transferred to the phase change material in the first flow channel 111 by heat conduction. Based on the characteristics of the phase change material itself, the phase change material undergoes a phase change after absorbing heat, from liquid to gas, and then the gaseous phase change material naturally dissipates into the second flow channel 121 due to the decrease in density, thereby bringing the heat emitted by the battery module 2 into the second flow channel 121. The provision of the heat dissipation fins 13 can enhance the heat dissipation effect of the air cooling portion 12, so that the gaseous phase change material quickly releases heat and cools in the second flow channel 121 to return to the liquid state, and then the liquid phase change material naturally flows back to the first flow channel 111.

[0043] Through the cycle of the above process, efficient heat dissipation of the battery cell module 2 is achieved. At the same time, in the above temperature plate structure, the phase change material in the contact cooling part 11 is in liquid state, and the battery cell module 2 is in direct contact with the contact cooling part 11, so it can have the same advantages of good cooling effect and high temperature uniformity as liquid cooling plate cooling, and at the same time, there is no need to set up a coolant circulation pipeline, which can not only reduce the occupancy of the internal space of the battery, but also avoid the risk of leakage. And through the setting of the air cooling part 12, the advantages of low cost and simple structure of air cooling are further combined.

[0044] Specifically, in the prior art, when the power battery adopts the air cooling solution, in order to ensure that each battery cell structure can be in contact with the air, it is generally necessary to set up a reserved air duct and other structures between each battery cell module 2, and connect the reserved air duct with the air guide structure such as a fairing hood, so that the air can flow along the reserved air duct to each battery cell structure as much as possible. In this process, in order to improve the temperature uniformity between each battery cell structure, the reserved air duct needs to be extended to each battery cell structure as much as possible, so a large gap needs to be retained between each battery cell structure, resulting in a large space occupied inside the power battery.

[0045] In contrast, the space occupied by the air cooling part 12 inside the battery in the present application is only reflected in the heat dissipation fins 13 and other structures. Compared with the reserved air duct and other structures in the prior art, the space occupied by the battery is reduced, thereby reducing costs while improving the energy density of the battery.

[0046] In addition, in the present application, the contact cooling part 11 and the air cooling part 12 form an L-shaped structure, so that when the contact cooling part 11 is fitted at the bottom of the battery module 2 for dissipating heat to the battery module 2, the phase change material undergoes a phase change in the first flow channel 111 to become a gas and then naturally floats into the second flow channel 121, and then after returning to a liquid state in the second flow channel 121, it can naturally flow back to the first flow channel 111 to achieve circulation. Therefore, the angle between the contact cooling part 11 and the air cooling part 12 can be set to any suitable angle in the range from a right angle to an obtuse angle. At the same time, in practical applications, the angle between the contact cooling part 11 and the air cooling part 12 can be set as close to 90° as possible, and at this time, the space occupied by the temperature plate and the battery module 2 as a whole is smaller.

[0047] Furthermore, in some embodiments of the present application, the air cooling portion 12 itself is not limited to a straight plate structure. For example, when a connection row or other structure is provided at one end of the battery module 2 close to the air cooling portion 12, the air cooling portion 12 can be provided with a bend or other structure without affecting the circulation effect of the second flow channel 121, so that the temperature averaging plate can better cooperate with the battery module 2.

[0048] In some embodiments of the present application, the first flow channel 111 extends at an angle to the horizontal direction, and the first flow channel 111 is arranged obliquely downward from an end close to the second flow channel 121 to an end away from the second flow channel 121 .

[0049] Based on the above-mentioned embodiments of the present application, by tilting the extension direction of the first flow channel 111, specifically, tilting downward from one end close to the second flow channel 121, the phase change material that returns to the liquid state can quickly flow in a direction away from the second flow channel 121 after flowing back from the second flow channel 121 to the first flow channel 111, thereby avoiding the phase change material from gathering at the junction of the second flow channel 121 and the first flow channel 111, resulting in a decrease in the temperature uniformity of the contact cooling portion 11, thereby avoiding affecting the heat dissipation effect of the contact cooling portion 11.

[0050] Furthermore, in the present application, the angle between the extension direction of the first flow channel 111 and the horizontal direction can be achieved by any suitable method.

[0051] In an exemplary embodiment provided in the present application, the first flow channel 111 may be arranged to be inclined in the contact cooling portion 11. That is, by setting the first flow channel 111 to different depths, or by arranging fillers or pads in the first flow channel 111 to raise one end of the first flow channel 111 close to the second flow channel 121, the depth of the first flow channel 111 gradually increases from the end close to the second flow channel 121 to the end away from the second flow channel 121, thereby achieving an angle setting between the flow channel surface formed by the first flow channel 111 and the horizontal plane.

[0052] Alternatively, in some other exemplary embodiments provided in the present application, the contact cooling portion 11 may be assembled tilted as a whole, so that the first flow channel 111 is tilted. For example, a pad or other structure is provided to raise the end of the contact cooling portion 11 close to the air cooling portion 12 from the outside of the temperature homogenizing plate as a whole, so that the first flow channel 111 is tilted.

[0053] Further, in some embodiments of the present application, the angle between the extension direction of the first flow channel 111 and the horizontal direction is α, where 1°≤α≤5°.

[0054] Based on the above-mentioned embodiments of the present application, the inclined setting of the first flow channel 111 can facilitate the reflux of the liquid phase change material in the first flow channel 111. However, when the inclination angle of the first flow channel 111 is too large, on the one hand, it will affect the thickness and strength of the contact cooling part 11 itself, and on the other hand, it will also cause the liquid phase change material to gather at the end of the first flow channel 111 away from the second flow channel 121, thereby affecting the temperature uniformity of the contact cooling part 11.

[0055] Specifically, when the first flow channel 111 is set to different depths to achieve the inclination of the extension direction of the first flow channel 111, when the angle between the extension direction of the first flow channel 111 and the horizontal direction is too large, the depth difference between the two ends of the first flow channel 111 is large. In this case, the end of the first flow channel 111 away from the second flow channel 121 has a larger depth, resulting in a weak area of ​​the temperature plate at this location. If the thickness of the contact cooling portion 11 is increased as a whole in order to reduce the impact of the weak area, the space occupied by the temperature plate inside the battery will increase, thereby affecting the energy density of the battery.

[0056] Furthermore, in order to make the phase change material flow back from the second flow channel 121 to the first flow channel 111 more smoothly, in some embodiments of the present application, the intersection of the second flow channel 121 and the first flow channel 111 can be rounded.

[0057] refer to Figure 1 and Figure 2 As shown in , in some embodiments of the present application, the contact cooling portion 11 and the air cooling portion 12 are integrally provided.

[0058] Based on the above-mentioned embodiment of the present application, the contact cooling part 11 and the air cooling part 12 are integrally arranged, and can be integrally formed by die casting or the like in the specific production process. This arrangement can improve the sealing effect of the overall temperature equalizing plate and avoid problems such as leakage.

[0059] refer to Figure 2 As shown in , in some embodiments of the present application, at least two first flow channels 111 are provided, and at least two first flow channels 111 are interconnected. At least two second flow channels 121 are provided, and at least two second flow channels 121 are interconnected.

[0060] Based on the above-mentioned embodiments of the present application, when the first flow channel 111 and the second flow channel 121 are specifically set, the distribution of the phase change material can be made more uniform by setting the first flow channel 111 and the second flow channel 121 as a plurality, thereby improving the temperature uniformity of the temperature plate. By interconnecting the plurality of first flow channels 111 and the second flow channels 121, the distribution of the phase change material can be further made more uniform.

[0061] Specifically, the number of first flow channels 111 and second flow channels 121 can be set according to factors such as the overall width of the temperature homogenizing plate. A first connecting flow channel perpendicular to the direction in which the first flow channel 111 extends can be set at the end of the first flow channel 111, and multiple first flow channels 111 are connected to the first connecting flow channel, thereby achieving mutual communication between the first flow channels 111. Similarly, the second connecting flow channel perpendicular to the direction in which the second flow channel 121 extends can be set at the end of the second flow channel 121 to achieve mutual communication between the second flow channels 121.

[0062] In addition, it should be noted that the present application does not limit the specific structure of the first flow channel 111 and the second flow channel 121. In the specific production and processing process, the specific structure of the first flow channel 111 and the second flow channel 121 can be set in any appropriate manner. For example, the first flow channel 111 is set to an S-shaped or zigzag structure. Through the S-shaped or zigzag structure setting, the flow path of the phase change material in the corresponding flow channel can be extended, so as to better exchange heat and improve the heat dissipation and cooling effect.

[0063] Furthermore, in the present application, the specific type of phase change material can be selected according to the heat dissipation requirements. For example, an inorganic phase change material, such as some inorganic salts, can be selected. Alternatively, an organic phase change material, such as paraffin or polyol, can also be selected.

[0064] The material can be selected based on the temperature at which the phase change occurs. For example, when the temperature at which the phase change material undergoes phase change is too high, the phase change material cannot undergo phase change in time to take away the heat after absorbing a certain amount of heat in the first flow channel 111, which will affect the heat dissipation and cooling effect of the temperature equalizer.

[0065] On the basis of the above technical solution, according to the second aspect of the present application, reference Figure 3 and Figure 4 As shown in , a battery is provided, which includes a housing 3, at least one battery cell module 2 and the above-mentioned temperature averaging plate. The battery cell module 2 is arranged in the housing 3. The temperature averaging plate is arranged in the housing 3, the contact cooling part 11 is arranged at the bottom of the battery cell module 2, and the air cooling part 12 is arranged at the side of the battery cell module 2.

[0066] Based on the above embodiments of the present application, the battery provided by the present application includes the above-mentioned temperature averaging plate, and the temperature averaging plate is provided to dissipate heat and cool the battery module 2, so as to replace the air cooling or liquid cooling plate cooling method commonly provided in the prior art. The above-mentioned setting can not only improve the temperature uniformity of the heat dissipation structure and improve the heat dissipation effect of the battery module 2, but also reduce the space occupied by the battery, thereby improving the energy density of the battery.

[0067] In some embodiments, an air inlet 31 is provided on the side wall of the housing 3 , and the air inlet 31 is arranged opposite to the heat dissipation fins 13 . A heat dissipation fan 32 is embedded on the side wall of the housing 3 , and the heat dissipation fan 32 is arranged opposite to the heat dissipation fins 13 .

[0068] Based on the above-mentioned embodiments of the present application, by providing an air inlet 31 and a heat dissipation fan 32 , the air circulation speed at the position of the heat dissipation fins 13 is further enhanced, thereby further improving the heat dissipation effect of the heat dissipation fins 13 .

[0069] Specifically, by providing the air inlet 31 and the heat dissipation fan 32, air flows in through the air inlet 31 and passes through the heat dissipation fins 13 to take away the heat, and then the air is drawn out through the heat dissipation fan 32 to achieve the circulation of air, that is, to achieve the circulation cooling process. The provision of the heat dissipation fan 32 can speed up the air flow process, thereby improving the heat dissipation and cooling effect.

[0070] Furthermore, the number of air inlets 31 can be set according to heat dissipation requirements. At the same time, in order to ensure that the air can take away as much heat as possible during the flow, it is necessary to make the air flow through the heat dissipation fins 13 as much as possible, so the relative position of the air inlet 31 and the heat dissipation fan 32 needs to be set during the setting.

[0071] refer to Figure 4 As shown in , in an exemplary embodiment provided in the present application, a heat dissipation fan 32 is arranged on the side wall of the housing 3 facing the heat dissipation fins 13, and two air inlets 31 may be provided, and the two air inlets 31 are arranged opposite to each other and are respectively arranged on the side walls of the housing 3 on both sides of the heat dissipation fins 13, and the heat dissipation fins 13 are located between the two air inlets 31, that is, at this time, the two air inlets 31 and the heat dissipation fan 32 form a T-shaped structure. When heat dissipation and cooling are performed, air flows in from the air inlets 31 on both sides and converges to the position of the heat dissipation fins 13, and is then drawn out by the heat dissipation fan 32. Thereby, the air on both sides can be converged to the position of the heat dissipation fins 13, thereby improving the heat dissipation and cooling effect of the heat dissipation fins 13.

[0072] In some embodiments, at least one temperature averaging plate is provided, and at least one battery cell module 2 is correspondingly provided on each temperature averaging plate.

[0073] Based on the above-mentioned embodiments of the present application, when the temperature equalizer is specifically set, a whole large temperature equalizer can be set for heat dissipation and cooling of multiple battery modules 2 at the same time, or multiple small temperature equalizers can be set, and a separate temperature equalizer is set for each battery module 2 for heat dissipation and cooling.

[0074] Specifically, when the temperature equalizing plate is set as a whole large temperature equalizing plate, the assembly process can be simplified during the battery assembly process. At the same time, the whole temperature equalizing plate can also make the battery cell more flat during assembly, thereby improving the assembly quality. When the temperature equalizing plate is set as multiple small temperature equalizing plates, different temperature equalizing plates can be set according to the specific structure of the battery cell module 2, which can be suitable for battery cell modules 2 with more complex structural assembly structures. In summary, any suitable setting method can be selected according to factors such as the actual internal structure of the battery in specific use, and this application does not make specific restrictions on this.

[0075] In some embodiments, a thermally conductive adhesive layer is disposed between the battery core module 2 and the contact cooling portion 11 .

[0076] Based on the above-mentioned embodiments of the present application, by setting the thermal conductive adhesive layer, not only the connection between the contact cooling part 11 and the battery cell module 2 can be strengthened, but also the thermal conductivity between the battery cell module 2 and the contact cooling part 11 can be improved, thereby further improving the heat dissipation and cooling effect of the battery cell module 2.

[0077] Specifically, the specific material and formation method of the thermal conductive adhesive layer can be selected in any appropriate manner. For example, the structural adhesive layer can be formed by directly injecting a thermal conductive structural adhesive between the two. Alternatively, a pre-prepared thermal conductive silicone pad can be placed between the two, and the specific selection can be based on actual assembly requirements.

[0078] In addition, it should be noted that the battery in the present application is not limited to the above structure. A control module and other structures may also be provided inside the shell 3. At the same time, a bottom guard plate and other structures may also be provided at the bottom of the shell 3. The specific configuration may be based on the actual use requirements of the battery, and the present application does not impose any specific restrictions on this.

[0079] According to a third aspect of the present application, an electrical device is provided, the electrical device comprising a device body and the above-mentioned battery. An energy supply cavity is provided in the device body, and the battery is provided in the energy supply cavity.

[0080] In the present application, the electrical equipment may be, but is not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, the electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and the spacecraft may include airplanes, rockets, space shuttles, and spacecrafts, etc.

[0081] Based on the above-mentioned embodiments of the present application, the electrical equipment provided by the present application includes the above-mentioned battery, and therefore also has the above-mentioned beneficial effects. In order to avoid repetition, they will not be described here.

[0082] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0083] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0084] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A temperature balancing plate, used for cooling a battery module, characterized in that: The temperature homogenizing plate comprises: The plate body comprises a contact cooling portion and an air cooling portion, wherein the contact cooling portion is connected to the air cooling portion to form an L-shaped structure; A heat dissipation fin is arranged on the air cooling part, and the heat dissipation fin is used for heat exchange with the air flow; The air cooling part is located above the contact cooling part, the contact cooling part is arranged at the bottom of the battery module, and the air cooling part is arranged at the side of the battery module; Among them, at least one first flow channel is arranged in the contact cooling part, and at least one second flow channel is arranged in the air cooling part. The first flow channel is connected with the second flow channel. Phase change material is arranged in the first flow channel, and the phase change material can circulate in the first flow channel and the second flow channel.

2. The temperature equalizing plate according to claim 1, characterized in that: A flow channel surface formed by the plurality of first flow channels is arranged at an angle to a horizontal plane, and the first flow channel is arranged obliquely downward from an end close to the second flow channel to an end away from the second flow channel.

3. The temperature equalizing plate according to claim 2, characterized in that: The included angle between the extending direction of the first flow channel and the horizontal direction is α, 1°≤α≤5°.

4. The temperature equalizing plate according to claim 2, characterized in that: The first flow channel is arranged obliquely in the contact cooling portion; or the contact cooling portion is assembled obliquely as a whole, so that the first flow channel is arranged obliquely.

5. The temperature homogenizing plate according to claim 1, characterized in that: There are at least two first flow channels, and at least two of the first flow channels are connected to each other; At least two second flow channels are provided, and at least two second flow channels are connected to each other.

6. A battery, characterized in that: The battery comprises: case; A battery cell module, wherein the battery cell module is disposed in the housing; and The temperature averaging plate as described in any one of claims 1 to 5, wherein the temperature averaging plate is arranged in the shell, the contact cooling portion is arranged in contact with the bottom of the battery cell module, and the air cooling portion is arranged on the side of the battery cell module.

7. The battery according to claim 6, characterized in that An air inlet is provided on the side wall of the shell, and the air inlet is arranged directly opposite to the heat dissipation fins; A heat dissipation fan is embedded on the side wall of the shell, and the heat dissipation fan is arranged directly opposite to the heat dissipation fins.

8. The battery according to claim 6, characterized in that At least one temperature averaging plate is provided, and at least one battery core module is correspondingly provided on each temperature averaging plate.

9. The battery according to claim 6, characterized in that A heat-conducting adhesive layer is arranged between the battery core module and the contact cooling portion.

10. An electrical device, characterized in that: The electrical equipment includes: A device body, wherein an energy supply cavity is disposed in the device body; and The battery according to any one of claims 6 to 9, wherein the battery is disposed in the energy supply cavity.

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