CN210110999U - A power battery cooling structure - Google Patents

Abstract

The utility model provides a power battery heat dissipation structure, which comprises a heat dissipation box, a box cover for sealing the heat dissipation box, a plurality of battery storage tanks arranged in the heat dissipation box, an air cooling module, and a heat pipe cooling module. Compared with the prior art, the utility model has a simple and reasonable structure. The air-cooled flow channel is microfabricated on the surface, so that the air-cooled gas changes from a laminar flow state to a turbulent flow state, so that it absorbs the heat of the battery operation, and then transfers the heat of the battery. to the outside of the battery. The use of copper plates increases the contact area between the heat pipe and the battery tabs and the bottom of the battery, improves the heat transfer efficiency of the cooling system, makes the temperature distribution of the battery more uniform, and reduces the number of heat pipes and costs.

Description

A power battery cooling structure

technical field

The utility model relates to the field of power battery heat dissipation of electric vehicles and hybrid vehicles, in particular to a power battery heat dissipation structure.

Background technique

Nowadays, electric vehicles and hybrid vehicles have received great attention from the society, but there are still obstacles such as battery explosions that hinder the development of electric vehicles. Among them, the safety of power batteries has caused social changes in electric vehicles. If the power battery explodes due to high operating temperature, a complete power battery cooling system needs to be designed to keep the operating temperature of the battery pack within a certain range and improve the heat dissipation performance of the power battery. The utility model proposes a power battery cooling system based on the multi-cooling methods of air cooling, fans and heat pipes. The surface micro-fabrication process is performed on the air cooling flow channel to set rectangular grooves, so that the air cooling fluid is transformed from laminar flow to turbulent flow, and turbulent flow is formed based on the gas. If the flow consumes energy, the gas needs to extract the heat generated by the power battery to form a turbulent flow, so as to flow to the outside of the power battery, thereby enhancing the heat dissipation effect of the air cooling on the power battery. Secondly, the heat pipes are distributed above the tabs of the power battery and the bottom of the battery, so that the heat accumulated in the tabs at the beginning of the power battery and the heat collected at the bottom of the battery after a long time of operation are transferred to the outside.

After extensive search, it is found that the heat dissipation device in the prior art is a power battery module unit and a power battery module disclosed in publication number CN104253289B. It can realize the uniform temperature of each power battery in the power battery module, and can ensure the stable performance of the power battery. The four sides of the conductive sheet are provided with borders, the upper plane of the conductive sheet is machined with a plurality of circular blind holes, the side walls of the circular blind holes are fixed with metal radially raised shrapnel, and the bottom of the circular blind holes is fixed with a metal shaft To the convex shrapnel, a plurality of raised metal connecting pieces are fixed on the four frames of the conductive sheet, a plurality of power batteries are arranged under the conductive sheet, and the lower plane of the conductive sheet corresponding to the plurality of circular blind holes is connected to the A power battery positive electrode welding. The utility model has the advantages of simple structure, uniform heat dissipation, stable performance and low cost, and the utility model is used for power battery heat dissipation. Or as disclosed in publication number CN100527521C, a heat dissipation device for a power battery pack includes a heat collecting plate, a heat dissipation plate and a pump; One port of the heat-dissipating plate channel is connected to one port of the heat-dissipating plate channel, the other port of the heat-collecting plate channel is connected to the liquid outlet end of the pump, and the other port of the heat-dissipating plate channel is connected to the liquid inlet end of the pump. The utility model also provides a power battery pack using the cooling device. According to the power battery pack of the present invention, during the use of the heat dissipation device, the pump pumps the cooling liquid into the channel of the heat collecting plate, the heat in the heat collecting plate is absorbed by the cooling liquid, and the cooling liquid that has absorbed the heat It flows into the channel of the heat dissipation plate and dissipates heat in the heat dissipation plate, and the cooling liquid after the heat dissipation is pumped into the channel of the heat collecting plate again, so the heat generated by the single battery can be effectively dissipated. Or as disclosed in publication number CN100517860C, a heat dissipation device for a power battery pack includes a heat pipe and a heat collecting plate; the heat collecting plate includes a bottom heat collecting plate and an upper heat collecting plate, and holes are provided in the bottom heat collecting plate and the upper heat collecting plate , the heat pipes are located in the holes of the bottom heat collecting plate and the upper heat collecting plate, and the heat pipes in the holes of the bottom heat collecting plate are communicated with the heat pipes in the holes of the upper heat collecting plate. The utility model also provides a power battery pack using the cooling device. According to the power battery pack of the present invention, during the use of the heat dissipation device, heat pipes are installed in the holes of the bottom heat collecting plate and the upper heat collecting plate, and the heat pipes in the holes of the bottom heat collecting plate and the holes of the upper heat collecting plate The heat pipes in the middle are connected, and the heat pipes can transfer the heat in the upper heat collecting plate to the bottom heat collecting plate and dissipate it at the bottom heat collecting plate, so the heat generated by the single battery can be effectively dissipated.

In the existing research, the predecessors used water cooling and phase change cooling to dissipate heat from the power battery, and these two methods will cause a series of problems. One is to use water cooling to dissipate heat, and it is necessary to provide electric power for the circulating pump to work, which will consume the internal energy of the battery. The second is to use the high latent heat performance of the phase change material to transfer the heat of the power battery to the phase change material. When the battery is squeezed or the phase change material expands at high temperature, the phase change material contacts the power battery electrodes, resulting in a short circuit of the battery.

The power battery heat dissipation structure based on air cooling, fan and heat pipe multi-cooling method has a simple structure, uniform heat dissipation, and enhances the heat dissipation performance of the power battery. .

Utility model content

The utility model proposes a power battery heat dissipation structure to solve the problem,

In order to achieve the above object, the utility model adopts the following technical solutions:

A power battery heat dissipation structure includes a heat dissipation box, a box cover for sealing the heat dissipation box, a plurality of battery storage tanks arranged in the heat dissipation box, an air cooling flow channel, a flow channel groove, a plurality of direct heat pipes, a plurality of Elbow heat pipe; the heat dissipation box has a built-in bottom plate for supporting the battery storage tank; a plurality of the battery storage tanks are connected in the heat dissipation box evenly distributed along the length direction of the heat dissipation box, the The battery storage tank has a gap facing the box cover, and the end of the battery storage tank without a gap is connected to the bottom plate; the air cooling channel is a through groove located on both sides of the battery storage tank and passing through the heat dissipation box ; The flow channel groove is rectangular, and is arranged on the bottom plate to match the air cooling flow channel; a part of the direct heat pipes is connected to the bottom plate, and the other part is connected to the box cover A number of the elbow heat pipes, one part is connected to the bottom plate, and the other part is connected to the box cover.

Further, the heat dissipation structure further includes a heat dissipation fin, a heat dissipation fan, and a heat dissipation hole;

The radiating fins are connected to both sides of the radiating box, and the plane where the radiating fins are located is perpendicular to a line formed by a plurality of the battery storage tanks;

The cooling fan is arranged on one side of the cooling box, which is adapted to the battery storage tank;

The heat dissipation holes are arranged on the outer surfaces of the heat dissipation box and the box cover.

Further, the nozzle of the straight heat pipe connected to the box cover is sleeved on the outer periphery of the battery tab of the power battery, and the nozzle of the elbow heat pipe connected to the box cover is sleeved to the power battery. The outer circumference of the battery tab, the other nozzle of the elbow heat pipe faces the heat dissipation hole of the heat dissipation box.

Further, there is a separator between the two battery storage tanks, and the two sides of the separator are the air cooling channels.

The beneficial technical effect obtained by the utility model is:

1. The structure of the utility model is simple and reasonable, and the heat dissipation efficiency is improved by using multiple cooling methods for heat dissipation.

2. Surface microfabrication of the air-cooled flow channel, so that the air-cooled gas changes from a laminar flow state to a turbulent flow state, so that it absorbs the heat of the battery, and then transfers the heat of the battery to the outside of the battery.

3. The use of copper plate increases the contact area between the heat pipe and the battery tab and the bottom of the battery, improves the heat transfer efficiency of the cooling system, makes the temperature distribution of the battery more uniform, and reduces the number of heat pipes and costs.

Description of drawings

The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. The same reference numerals designate corresponding parts throughout the different views.

1 is a schematic structural diagram of a power battery heat dissipation structure in one of the embodiments of the present invention;

Fig. 2 is the structural schematic diagram of the high temperature bonding of the heat pipe and the copper plate in one of the embodiments of the present utility model;

3 is a schematic structural diagram of a heat dissipation box and a flow channel groove in one embodiment of the present invention;

4 is a schematic diagram of the structure of the heat dissipation hole in one of the embodiments of the present invention;

5 is a schematic structural diagram of a battery storage tank in one embodiment of the present invention.

Description of reference numerals: 1-power battery; 2-air cooling channel; 3-cooling fan; 4-cooling fin; 5-straight heat pipe; 6-elbow heat pipe; 7-heating hole; 8-flow channel groove; 9- cooling box; 11- battery tab; 12- battery storage tank; 13- bottom plate.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be described in further detail below in conjunction with its embodiments; it should be understood that the specific embodiments described here are only used to explain the present utility model, not to limit the present invention. Other systems, methods and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the present invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in the following detailed description and will be apparent from the following detailed description.

The same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", " The orientation or positional relationship indicated by "right" and the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, It is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration and should not be construed as a limitation on the present patent. specific meaning.

The utility model is a power battery heat dissipation structure, and the following embodiments are described according to the description of the accompanying drawings:

Example 1:

A power battery heat dissipation structure, comprising a heat dissipation box 9, a box cover for sealing the heat dissipation box 9, a plurality of battery storage tanks 12 arranged in the heat dissipation box 9, an air cooling channel 2, and a channel groove 8 , a number of straight heat pipes 5, a number of elbow heat pipes 6; the heat dissipation box 6 has a built-in bottom plate 13 for supporting the battery storage tank 12; The cloth is connected in the heat dissipation box, the battery storage tank has a gap facing the box cover, and the end of the battery storage tank without a gap is connected to the bottom plate; the air cooling channel 2 is located in the battery The two sides of the storage tank pass through the through grooves of the heat dissipation box; the flow channel groove 8 is rectangular, and is arranged on the bottom plate 13 to match the air cooling flow channel 2; a number of the straight heat pipes 5 , a part is connected to the bottom plate, and the other part is connected to the box cover; some of the elbow heat pipes 6 are connected to the bottom plate, and the other part is connected to the box cover.

The power battery 1 is a flat plate, such as a lithium battery, in which the electrodes of the power battery 1 are integrated on one side, including positive and negative electrodes, and are generally designed in a flat or block shape, and electrodes are arranged on it, arranged according to the position. , the following focuses on the detailed analysis of the heat dissipation structure. Since the focus of this embodiment is not on the improvement of the power battery 1 , the structure of the power battery 1 is not described in detail.

The heat dissipation structure further includes heat dissipation fins 4, heat dissipation fans 3, and heat dissipation holes 7;

The heat dissipation fins 4 are connected to both sides of the heat dissipation box 9, and the plane where the heat dissipation fins 4 are located is perpendicular to a straight line formed by a plurality of the battery storage tanks 12;

The cooling fan 3 is arranged on one side of the cooling box 9 to be compatible with the battery storage tank 12; the cooling fan 3 can be directly purchased in the market by the technicians who belong to the cooling fan 3 by searching for the model. When looking at the model device, you can directly look up the technical manual for understanding, so the cooling fan 3 will not be described in detail.

The heat dissipation holes 7 are arranged on the outer surfaces of the heat dissipation box 9 and the box cover.

The nozzle of the straight heat pipe 5 connected to the box cover is sleeved on the outer periphery of the battery tab 11 of the power battery, and the nozzle of the elbow heat pipe 6 connected to the box cover is sleeved to the power battery. The outer circumference of the battery tab 11 is located, and the other nozzle of the elbow heat pipe 6 faces the heat dissipation hole 7 of the heat dissipation box 9 .

There is a separator between the two battery storage tanks 12 , and the air cooling channels 2 are on both sides of the separator.

The heat sink 9 includes battery separators.

The air-cooled flow channel 2 is arranged on both sides of the power battery, and the lower surface of the air-cooled flow channel 2 and the outer wall of the battery hollow separator are provided with rectangular flow channel grooves 8 through the surface micro-fabrication process. The cooling fins 4 are fixed on one end of the two outermost battery separators, and the battery storage tank 12 is arranged at the bottom of the cooling system. The copper plate is arranged above the power battery pack 1 through, and part of the straight heat pipe 5 and the elbow heat pipe 6 are arranged within the area of the power battery tab 11, and are bonded to the surface of the copper plate by high temperature glue. The copper plate is arranged through and below the battery storage tank 12, and the direct heat pipe 5 is arranged within the area of the lower bottom of the power battery 1, and is bonded to the surface of the copper plate by high temperature glue. The cooling fan 3 is arranged in the center of one side of the cooling system.

The air cooling channels 2 are arranged on both sides of the power battery 1 throughout. The rectangular channel grooves 8 are provided on the lower surface of the air cooling channel 2 and the outer wall of the battery separator through a surface micro-fabrication process. The flow channel groove 8 can make the incoming cooling gas change from a laminar flow state to a turbulent flow state. Based on the energy consumption of the gas to form a turbulent flow, the gas needs to extract the heat generated by the power battery to form a turbulent flow, so as to flow to the turbulent flow. Outside the power battery.

The cooling fins 4 are fixed on the outer walls of one end of the two outermost battery separators.

The cooling fan 3 is arranged in the center of one side of the cooling system, and the rotation range of the cooling fan 3 is arranged within the distance between the two adjacent air cooling channels 2 . The flow of the air cooling fluid is accelerated by the cooling fan 3, thereby enhancing the heat dissipation intensity.

The copper plates are arranged through the power battery tabs 11 and the power battery storage tank 12 respectively, so as to transfer the heat accumulated in the battery tabs 11 when the power battery 1 starts to work. The copper plate and the heat accumulated in the lower part of the power battery 1 after the power battery 1 works for a long time is transferred to the copper plate.

The part of the straight heat pipe 5 and the elbow heat pipe 6 are arranged within the area of the power battery tab 11, and are bonded to the surface of the copper plate by high temperature glue. The direct heat pipe 5 is arranged within the area of the lower bottom of the power battery 1, and is bonded to the surface of the copper plate by high temperature glue. The heat generated by the power battery 1 is transferred to the outside by bonding and fixing the copper plate with the straight heat pipe 5 and the elbow heat pipe 6 .

The box cover, the lower bottom cover and the side wall of the heat dissipation structure are provided with the heat dissipation holes 7 .

Embodiment 2:

A power battery heat dissipation structure, comprising a heat dissipation box 9, a box cover for sealing the heat dissipation box 9, a plurality of battery storage tanks 12 arranged in the heat dissipation box 9, an air cooling channel 2, and a channel groove 8 , a number of straight heat pipes 5, a number of elbow heat pipes 6; the heat dissipation box 6 has a built-in bottom plate 13 for supporting the battery storage tank 12; The cloth is connected in the heat dissipation box, the battery storage tank has a gap facing the box cover, and the end of the battery storage tank without a gap is connected to the bottom plate; the air cooling channel 2 is located in the battery The two sides of the storage tank pass through the through grooves of the heat dissipation box; the flow channel groove 8 is rectangular, and is arranged on the bottom plate 13 to match the air cooling flow channel 2; a number of the straight heat pipes 5 , a part is connected to the bottom plate, and the other part is connected to the box cover; some of the elbow heat pipes 6 are connected to the bottom plate, and the other part is connected to the box cover.

The power battery 1 is a flat plate, such as a lithium battery, in which the electrodes of the power battery 1 are integrated on one side, including positive and negative electrodes, and are generally designed in a flat or block shape, and electrodes are arranged on it, arranged according to the position. , the following focuses on the detailed analysis of the heat dissipation structure. Since the focus of this embodiment is not on the improvement of the power battery 1 , the structure of the power battery 1 is not described in detail.

The heat dissipation structure further includes heat dissipation fins 4, heat dissipation fans 3, and heat dissipation holes 7;

The heat dissipation fins 4 are connected to both sides of the heat dissipation box 9, and the plane where the heat dissipation fins 4 are located is perpendicular to a straight line formed by a plurality of the battery storage tanks 12;

The cooling fan 3 is arranged on one side of the cooling box 9 to be compatible with the battery storage tank 12; the cooling fan 3 can be directly purchased in the market by the technicians who belong to the cooling fan 3 by searching for the model. When looking at the model device, you can directly look up the technical manual for understanding, so the cooling fan 3 will not be described in detail.

The heat dissipation holes 7 are arranged on the outer surfaces of the heat dissipation box 9 and the box cover.

The nozzle of the straight heat pipe 5 connected to the box cover is sleeved on the outer periphery of the battery tab 11 of the power battery, and the nozzle of the elbow heat pipe 6 connected to the box cover is sleeved to the power battery. The outer circumference of the battery tab 11 is located, and the other nozzle of the elbow heat pipe 6 faces the heat dissipation hole 7 of the heat dissipation box 9 .

There is a separator between the two battery storage tanks 12 , and the air cooling channels 2 are on both sides of the separator.

The heat sink 9 includes battery separators.

The air-cooled flow channel 2 is arranged on both sides of the power battery, and the lower surface of the air-cooled flow channel 2 and the outer wall of the battery hollow separator are provided with rectangular flow channel grooves 8 through the surface micro-fabrication process. The cooling fins 4 are fixed on one end of the two outermost battery separators, and the battery storage tank 12 is arranged at the bottom of the cooling system. The copper plate is arranged above the power battery pack 1 through, and part of the straight heat pipe 5 and the elbow heat pipe 6 are arranged within the area of the power battery tab 11, and are bonded to the surface of the copper plate by high temperature glue. The copper plate is arranged through and below the battery storage tank 12, and the direct heat pipe 5 is arranged within the area of the lower bottom of the power battery 1, and is bonded to the surface of the copper plate by high temperature glue. The cooling fan 3 is arranged in the center of one side of the cooling system.

The air cooling channels 2 are arranged on both sides of the power battery 1 throughout. The rectangular channel grooves 8 are provided on the lower surface of the air cooling channel 2 and the outer wall of the battery separator through a surface micro-fabrication process. The flow channel groove 8 can make the incoming cooling gas change from a laminar flow state to a turbulent flow state. Based on the energy consumption of the gas to form a turbulent flow, the gas needs to extract the heat generated by the power battery to form a turbulent flow, so as to flow to the turbulent flow. Outside the power battery.

The cooling fins 4 are fixed on the outer walls of one end of the two outermost battery separators.

The cooling fan 3 is arranged in the center of one side of the cooling system, and the rotation range of the cooling fan 3 is arranged within the distance between the two adjacent air cooling channels 2 . The flow of the air cooling fluid is accelerated by the cooling fan 3, thereby enhancing the heat dissipation intensity.

The copper plates are arranged through the power battery tabs 11 and the power battery storage tank 12 respectively, so as to transfer the heat accumulated in the battery tabs 11 when the power battery 1 starts to work. The copper plate and the heat accumulated in the lower part of the power battery 1 after the power battery 1 works for a long time is transferred to the copper plate.

The part of the straight heat pipe 5 and the elbow heat pipe 6 are arranged within the area of the power battery tab 11, and are bonded to the surface of the copper plate by high temperature glue. The direct heat pipe 5 is arranged within the area of the lower bottom of the power battery 1, and is bonded to the surface of the copper plate by high temperature glue. The heat generated by the power battery 1 is transferred to the outside by bonding and fixing the copper plate with the straight heat pipe 5 and the elbow heat pipe 6 .

The box cover, the lower bottom cover and the side wall of the heat dissipation structure are provided with the heat dissipation holes 7 .

Preferably, the box body of the heat dissipation box 9 is any one of an aluminum alloy box, a cold-rolled plate box, a hot-rolled plate box, and a polymer box.

Preferably, several handles are also installed on the outer wall of the heat dissipation box 9 to facilitate the movement of the heat dissipation system of the power battery pack.

Preferably, the battery storage tank 12 is made of any combination of aluminum alloy, cold-rolled sheet, hot-rolled sheet, and polymer sheet. Through the battery storage tank 12, a plurality of power batteries that have been assembled are fixed to obtain a power battery pack.

Preferably, the power battery 1 installed in the battery storage tank 12 is one of a polymer soft pack, a ternary lithium ion cylinder, a square aluminum case, a lithium iron phosphate cylinder, a square aluminum case, and the like.

Preferably, the heat collector (not shown in the figure) comprises a horizontally arranged first bottom plate and a plurality of first grid plates extending upward from the first bottom plate, the plurality of first grid plates are perpendicular to the surface of the first bottom plate, and the plurality of first grid plates are perpendicular to the surface of the first bottom plate. The board is provided with a first insertion hole (not marked in the figure), and the heat-conducting element is inserted into the first insertion hole, and several first grid plates are pressed against the lower surface of the power battery pack installation box, which can avoid A large amount of heat generated by the power battery pack has no space for convection. The gap between several first grid plates is conducive to the movement of heat, and when entering the space formed by the first grid, the contact area between the heat and the heat collector is increased. Heat collection effect.

Preferably, the heat sink (not shown in the figure) comprises a vertically arranged second bottom plate and a plurality of second grid plates, the second grid plates extend inward from the surface of the second bottom plate and are perpendicular to the second bottom plate. On the inner surface of the second bottom plate, the second grid plate is provided with a second insertion hole (not shown in the figure), and the other end of the heat conducting member is inserted into the second insertion hole, the A fan is detachably mounted on the outer surface of the second base plate.

Preferably, the heat collector and/or the heat sink are aluminum profiles. Aluminum profiles have the characteristics of good thermal conductivity and not easy to be corroded.

Preferably, the heat-conducting member is any one of a wire mesh structure copper pipe, a fiber structure copper pipe, and a groove structure copper pipe. The copper tubes with several structures have good thermal conductivity, and can quickly conduct the heat collected by the heat collector to the heat sink.

The heat dissipation structure of the power battery in this embodiment, on the one hand, conducts the heat generated by the power battery pack to the vicinity of the fan through the heat conducting element, and with the help of the fan, the heat of the power battery pack can be dissipated to the outside of the box in time, Effectively reduce the temperature of the power battery pack, so as to ensure that the power battery works at a relatively constant temperature and improve the use efficiency and life of the battery; on the other hand, due to the existence of heat dissipation components, the power battery pack can be completely sealed. The power battery pack installation box can effectively prevent dust or moisture from entering the battery pack, thereby helping to improve the safety of the battery pack.

To sum up, the utility model provides a power battery heat dissipation structure. Compared with the prior art, the utility model has a simple and reasonable structure. The surface micro-fabrication of the air-cooled flow channel is carried out, so that the air-cooled gas can be transformed from a laminar flow state to a turbulent state. In the current state, it absorbs the heat of the battery operation, and then transfers the heat of the battery to the outside of the battery. The use of copper plates increases the contact area between the heat pipe and the battery tabs and the bottom of the battery, improves the heat transfer efficiency of the cooling system, makes the temperature distribution of the battery more uniform, and reduces the number of heat pipes and costs.

While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That said, the methods, systems and apparatus discussed above are examples. Various configurations may omit, substitute or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different from that described, and/or various components may be added, omitted, and/or combined. Furthermore, features described with respect to certain configurations may be combined in various other configurations, eg, different aspects and elements of the configurations may be combined in a similar manner. Furthermore, elements therein may be updated as technology develops, ie, many of the elements are examples and do not limit the scope of the disclosure or the claims.

Specific details are given in the description to provide a thorough understanding of example configurations, including implementations. However, configurations may be practiced without these specific details, eg, well-known circuits, procedures, algorithms, structures and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing descriptions of configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.

In conclusion, it is intended that the foregoing detailed description be regarded as illustrative and not restrictive, and that it should be understood that the following claims, including all equivalents, are intended to define the spirit and scope of the present invention. The above embodiments should be understood as only for illustrating the present invention and not for limiting the protection scope of the present invention. After reading the contents of the description of the present utility model, the skilled person can make various changes or modifications to the present utility model, and these equivalent changes and modifications also fall within the scope defined by the claims of the present utility model.

Claims (4)

1. A power battery heat dissipation structure is characterized by comprising a heat dissipation box (9), a box cover used for sealing the heat dissipation box (9), a plurality of battery storage grooves (12) arranged in the heat dissipation box (9), an air cooling flow channel (2), a flow channel groove (8), a plurality of straight heat pipes (5) and a plurality of elbow heat pipes (6); the heat dissipation box (9) is internally provided with a bottom plate (13) for supporting the battery storage groove (12); the battery storage grooves (12) are uniformly distributed in the heat dissipation box along the length direction of the heat dissipation box and are connected in the heat dissipation box, each battery storage groove is provided with a notch facing the box cover, and one end, without the notch, of each battery storage groove is connected with the bottom plate; the air cooling flow channel (2) is a through groove which is positioned at two sides of the battery storage groove and penetrates through the heat dissipation box; the flow channel groove (8) is rectangular and is arranged on the bottom plate (13) in a manner of being matched with the air cooling flow channel (2); a plurality of the straight heat pipes (5), one part of which is connected to the bottom plate, and the other part of which is connected to the inside of the box cover; and one part of the elbow heat pipes (6) is connected to the bottom plate, and the other part of the elbow heat pipes is connected to the inside of the box cover.

2. A power battery heat dissipation structure as defined in claim 1, wherein the heat dissipation structure further comprises heat dissipation fins (4), heat dissipation fans (3), heat dissipation holes (7);

the radiating fins (4) are connected to two sides of the radiating box (9), and the plane where the radiating fins (4) are located is perpendicular to a straight line formed by connecting the battery storage grooves (12);

the heat dissipation fan (3) is matched with the battery storage groove (12) and is arranged on one side of the heat dissipation box (9);

the heat dissipation holes (7) are formed in the outer surfaces of the heat dissipation box (9) and the box cover.

3. The power battery heat dissipation structure of claim 1, wherein the pipe orifice of the straight heat pipe (5) connected to the case cover is sleeved on the periphery of the battery tab (11) of the power battery, the pipe orifice of the elbow heat pipe (6) connected to the case cover is sleeved on the periphery of the battery tab (11) of the power battery, and the other pipe orifice of the elbow heat pipe (6) faces the heat dissipation hole (7) of the heat dissipation case (9).

4. A power battery heat dissipation structure as defined in claim 1, wherein a partition is provided between the two battery storage tanks (12), and the air cooling flow passage (2) is provided on both sides of the partition.

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