Battery pack heat dissipation assembly of vehicle and vehicle

Abstract

The invention relates to the technical field of vehicle battery pack heat dissipation, and discloses a battery pack heat dissipation assembly and a vehicle, and the battery pack heat dissipation assembly comprises a heat dissipation box which is hollow and is provided with a containing cavity used for containing a battery pack; the first heat dissipation assembly is arranged at the top of the heat dissipation box, heat of the battery pack can be conducted to the first heat dissipation assembly through the heat dissipation box, and the first heat dissipation assembly is used for achieving heat dissipation of the heat dissipation box through cooling liquid; the second heat dissipation assembly is arranged on one side of the heat dissipation box, and the second heat dissipation assembly is used for forming heat dissipation airflow and conducting the heat dissipation airflow into the containing cavity so as to achieve heat dissipation of the battery pack; wherein when the current temperature of the battery pack is higher than the preset temperature, the first heat dissipation assembly and / or the second heat dissipation assembly are / is started to dissipate heat of the battery pack. Therefore, through the arrangement of the heat dissipation box, the first heat dissipation assembly and the second heat dissipation assembly, good heat dissipation of the battery pack can be achieved in multiple modes, and then it is guaranteed that the battery pack can work normally.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle battery pack heat dissipation, and particularly relates to a battery pack heat dissipation component for a vehicle and a vehicle. Background Art

[0002] With the increasing demands for environmental protection and sustainable development, new energy vehicles have been widely developed. As a core component of new energy vehicles, the performance and lifespan of the battery pack directly affect the overall performance of the vehicle. During the charging and discharging process of the battery pack, a large amount of heat is generated, causing the temperature of the battery pack to rise. If not properly handled, it is likely to lead to a decline in the performance of the battery pack, a shortening of its lifespan, and even safety issues.

[0003] Currently, a heat dissipation structure is provided inside the battery pack, and heat dissipation is achieved through a coolant. However, when the heat generation of the battery pack is large, the heat dissipation effect is not good, which may lead to a reduction in the performance of the battery pack and even safety issues. Summary of the Invention

[0004] In view of the above problems, the present application provides a battery pack heat dissipation component for a vehicle and a vehicle. Through the settings of a heat dissipation box, a first heat dissipation component, and a second heat dissipation component, good heat dissipation for the battery pack can be achieved through multiple methods, thereby ensuring the normal operation of the battery pack.

[0005] The first aspect of the present application provides a battery pack heat dissipation component for a vehicle, including: a heat dissipation box, which is hollow and forms a receiving cavity for receiving the battery pack; a first heat dissipation component, disposed on the top of the heat dissipation box, and the heat of the battery pack can be conducted to the first heat dissipation component through the heat dissipation box, and the first heat dissipation component is used to dissipate heat from the heat dissipation box through a coolant; a second heat dissipation component, disposed on one side of the heat dissipation box, and the second heat dissipation component is used to form a heat dissipation air flow and conduct the heat dissipation air flow into the receiving cavity to achieve heat dissipation for the battery pack; wherein, when the current temperature of the battery pack is higher than a preset temperature, the first heat dissipation component and / or the second heat dissipation component is started to dissipate heat from the battery pack.

[0006] In some specific embodiments, the first heat dissipation component includes: a heat dissipation substrate, disposed on the top of the heat dissipation box, and the heat dissipation substrate is attached to the top wall of the heat dissipation box; heat dissipation fins, disposed on the heat dissipation substrate, and the heat dissipation fins are used to dissipate heat from the heat dissipation substrate; a heat dissipation pipe, disposed on the heat dissipation substrate, and the heat dissipation pipe is used to conduct the coolant, and the heat dissipation pipe is adjacent to the heat dissipation fins to dissipate heat from the heat dissipation fins and the heat dissipation substrate through the coolant.

[0007] In some specific embodiments, the heat dissipation pipe is bent in an S shape and arranged on the top wall of the heat dissipation substrate to form a plurality of U-shaped grooves arranged along a preset direction, and the heat dissipation fins are disposed in the U-shaped grooves for heat dissipation, and the heat dissipation fins are arranged in multiple columns along the preset direction.

[0008] In some specific embodiments, the height of the heat sink is lower than that of the heat pipe, and the distance between the side wall of the heat sink and the heat pipe is less than a preset distance.

[0009] In some specific embodiments, the first heat dissipation component further includes a liquid storage device, a power device, and a heat exchanger. The liquid storage device, the power device, and the heat exchanger are connected to form a heat dissipation loop. Among them, the liquid storage device is used to store the coolant, the power device is used to circulate the coolant in the heat dissipation loop, and the heat exchanger is used to dissipate the heat of the coolant through heat exchange.

[0010] In some specific embodiments, the second heat dissipation component includes: a fan for forming a heat dissipation air flow to direct it to the accommodation cavity; a temperature reduction device for cooling the heat dissipation air flow. After the fan forms the heat dissipation air flow, the temperature reduction device cools the heat dissipation air flow so that the cooled heat dissipation air flow is introduced into the accommodation cavity to dissipate heat from the battery pack through the heat dissipation air flow.

[0011] In some specific embodiments, the temperature reduction device includes a water storage tank and an atomizing nozzle that are connected to each other. The water storage tank is used to supply water to the atomizing nozzle, and the atomizing nozzle is used to form a spray to blow towards the heat dissipation air flow to dissipate heat from the heat dissipation air flow through the spray.

[0012] In some specific embodiments, the second heat dissipation component further includes a wind guiding structure. The wind guiding structure includes an air inlet structure and a dehumidifying structure. The air inlet structure is arranged in a horn shape to form an air inlet duct, and the dehumidifying structure forms a dehumidifying duct. A dehumidifying agent is arranged in the dehumidifying duct. Among them, the air inlet with a larger size of the air inlet structure is arranged opposite to the upper fan, the dehumidifying duct is respectively connected to the air outlet with a smaller size of the air inlet structure and the accommodation cavity, and the dehumidifying agent is used to dehumidify the heat dissipation air flow in the dehumidifying duct.

[0013] In some specific embodiments, the second heat dissipation component further includes a heating device for heating the air flow formed by the fan. When the ambient temperature of the vehicle is lower than a preset ambient temperature, the fan is used to form a heating air flow. The heating air flow enters the accommodation cavity after being heated by the heating device to heat the battery pack.

[0014] The second aspect of the present application provides a vehicle, including the battery pack heat dissipation component as described in any one of the above and a battery pack. The battery pack heat dissipation component is used to dissipate heat from the battery pack.

[0015] The present application has at least the following beneficial effects: The battery pack heat dissipation assembly and vehicle provided by the present application include: a heat dissipation box, which is hollow and forms a receiving cavity for receiving the battery pack; a first heat dissipation assembly disposed on the top of the heat dissipation box, the heat of the battery pack can be conducted to the first heat dissipation assembly through the heat dissipation box, and the first heat dissipation assembly is used to dissipate the heat of the heat dissipation box through the coolant; a second heat dissipation assembly disposed on one side of the heat dissipation box, the second heat dissipation assembly is used to form a heat dissipation air flow and conduct the heat dissipation air flow into the receiving cavity to dissipate the heat of the battery pack; wherein, when the current temperature of the battery pack is higher than the preset temperature, the first heat dissipation assembly and / or the second heat dissipation assembly is started to dissipate the heat of the battery pack. Therefore, through the setting of the heat dissipation box, the first heat dissipation assembly and the second heat dissipation assembly, good heat dissipation of the battery pack can be achieved in multiple ways, thereby ensuring that the battery pack can work normally.

[0016] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0018] Figure 1 is a schematic flowchart of an embodiment of the battery pack heat dissipation assembly of the vehicle provided by the present application;

[0019] Figure 2 is Figure 1 a cross-sectional view of the structure shown;

[0020] Figure 3 is Figure 2 a schematic structural diagram of an embodiment of the first heat dissipation assembly in

[0021] Description of the reference numerals: The battery pack heat dissipation assembly 10 of the vehicle, the housing 11, the heat dissipation box 12, the accommodation cavity 121, the first heat dissipation assembly 13, the heat dissipation substrate 131, the heat dissipation fins 132, the heat dissipation pipes 133, the U-shaped grooves 1331, the liquid storage device 134, the power device 135, the heat exchanger 136, the second heat dissipation assembly 14, the fan 141, the cooling device 142, the water storage tank 1421, the atomizing nozzle 1422, the air inlet structure 1431, the dehumidification structure 1432, the dehumidifying agent 1433, the air outlet pipe 15, the battery pack 20, the preset direction D.

[0022] The realization of the purpose of this application, the functional characteristics and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present application, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes the A solution, or the B solution, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0026] The first aspect of the present application provides a battery pack heat dissipation assembly 10 for a vehicle, Figure 1 It is a schematic flow chart of an embodiment of the battery pack heat dissipation assembly 10 for a vehicle provided by the present application. Figure 2 Is Figure 1Cross-sectional view of the structure shown.

[0027] Combined with Figure 1 and Figure 2 , the battery pack cooling component 10 of the vehicle includes a housing 11, a cooling box 12, a first cooling component 13, and a second cooling component 14. The cooling box 12, the first cooling component 13, and the second cooling component 14 can all be arranged inside the housing 11. The cooling box 12 is hollow and forms a receiving cavity 121 for receiving the battery pack 20. The first cooling component 13 and the second cooling component 14 are used to directly or indirectly cool the battery pack 20 to ensure that the battery pack 20 is in a good operating temperature range.

[0028] Specifically, the first cooling component 13 can be arranged on the top of the cooling box 12. The heat of the battery pack 20 can be conducted to the first cooling component 13 through the cooling box 12. The first cooling component 13 is used to dissipate the heat of the cooling box 12 through the coolant, and thus indirectly dissipate the heat of the battery pack 20. At this time, the cooling box 12 can include a box side wall and a box top wall. The box side wall can be arranged on the bottom wall of the housing 11, and the box top wall is arranged on the box side wall, so that the bottom wall of the housing 11, the box side wall, and the box top wall enclose to form the receiving cavity 121. The first cooling component 13 is arranged on the top of the cooling box 12, and can be arranged on the box top wall. At this time, the box top wall can be made of a material with good heat conduction performance to well conduct the heat of the battery pack 20 to the first cooling component 13 through the box top wall. Among them, the coolant can flow through the first cooling component 13 to dissipate the heat conducted to the first cooling component 13 through the coolant.

[0029] Specifically, the second cooling component 14 is arranged on one side of the cooling box 12. At this time, the second cooling component 14 can be arranged opposite to the side wall of the cooling box 12. The second cooling component 14 is used to form a cooling air flow and conduct the cooling air flow into the receiving cavity 121 to realize the cooling of the battery pack 20. Corresponding to the arrangement mode that the second cooling component 14 is arranged on one side of the cooling box 12, the cooling air flow formed by the second cooling component 14 can enter the receiving cavity 121 of the cooling box 12 from the side wall of the cooling box 12. It should be understood that the second cooling component 14 cools the battery pack 20 through the cooling air flow, which belongs to the second cooling component 14 directly cooling the battery pack 20.

[0030] Combined with the above settings of the first heat dissipation component 13 and the second heat dissipation component 14, the working modes of the first heat dissipation component 13 and the second heat dissipation component 14 can be as follows: when the current temperature of the battery pack 20 is higher than the preset temperature, the first heat dissipation component 13 and / or the second heat dissipation component 14 is started to dissipate heat from the battery pack 20. Among them, the preset temperature can be set in advance according to actual needs. When the current temperature of the battery pack 20 is higher than the preset temperature, it indicates that the current temperature of the battery pack 20 is too high, and its working state may be adversely affected. Therefore, at this time, the first heat dissipation component 13 and / or the second heat dissipation component 14 can be controlled to start, that is, either one or both of the first heat dissipation component 13 and the second heat dissipation component 14 are controlled to dissipate heat from the battery pack 20.

[0031] In summary, through the settings of the heat dissipation box 12, the first heat dissipation component 13, and the second heat dissipation component 14, good heat dissipation for the battery pack 20 can be directly or indirectly achieved in various ways, thereby ensuring that the battery pack 20 can work properly.

[0032] Figure 3 Yes Figure 2 It is a schematic structural diagram of an embodiment of the first heat dissipation component 13 in

[0033] Combined with Figure 3 , in some specific embodiments, the first heat dissipation component 13 includes a heat dissipation substrate 131, heat dissipation fins 132, and a heat dissipation pipe 133 to combine for heat dissipation. Among them, the heat dissipation substrate 131 is arranged on the top of the heat dissipation box 12, and the heat dissipation substrate 131 is attached to the top wall of the heat dissipation box 12, so that the heat of the heat dissipation box 12 can be well introduced onto the heat dissipation substrate 131. At this time, the heat dissipation substrate 131 can be made of a material with good heat dissipation performance. The heat dissipation fins 132 are arranged on the heat dissipation substrate 131, and the heat dissipation fins 132 are used for the heat dissipation of the heat dissipation substrate 131. At this time, the heat dissipation substrate 131 can dissipate heat by itself and can also dissipate heat through the heat dissipation fins 132 arranged thereon. Therefore, the heat dissipation fins 132 actually play the role of strengthening the heat dissipation effect of the heat dissipation substrate 131. The heat dissipation pipe 133 is arranged on the heat dissipation substrate 131, and the heat dissipation pipe 133 is used to conduct the coolant. The heat dissipation pipe 133 is arranged adjacent to the heat dissipation fins 132 to dissipate heat from the heat dissipation fins 132 and the heat dissipation substrate 131 through the coolant. At this time, the coolant in the heat dissipation pipe 133 has a relatively low temperature, and the coolant in the heat dissipation pipe 133 can exchange heat with the heat dissipation fins 132 and the heat dissipation substrate 131, and then take away and dissipate the heat in the heat dissipation substrate 131 and the heat dissipation fins 132 through the coolant. It should be understood that by arranging the heat dissipation pipe 133 adjacent to the heat dissipation fins 132, a good heat dissipation effect on the heat dissipation fins 132 can be achieved through the heat dissipation pipe 133.

[0034] By setting the heat dissipation substrate 131, the heat of the heat dissipation box 12 can be well introduced and exported; by setting the heat dissipation fins 132 and the heat dissipation tubes 133, the heat on the heat dissipation substrate 131 can be well dissipated, thereby finally achieving a good heat dissipation effect on the battery pack 20.

[0035] For a more specific configuration of the first heat dissipation component 13, continue to combine Figure 3 In some specific embodiments, the heat pipe 133 is bent in an S shape and arranged on the top wall of the heat dissipation substrate 131 to form a plurality of U-shaped grooves 1331 arranged along a preset direction D. The heat sink 132 is disposed in the U-shaped groove 1331 for heat dissipation, and the heat sink 132 is arranged in a plurality of rows along the preset direction D.

[0036] Specifically, the heat dissipation tube 133 is bent in an S shape and extends in a preset direction D, thereby forming a plurality of U-shaped grooves 1331 arranged along the preset direction D. At this time, the opening directions of two adjacent U-shaped grooves 1331 are perpendicular to the preset direction D and the two are opposite. By arranging the heat sink 132 in the U-shaped groove 1331, the three directions of the heat sink 132 are opposite to the heat dissipation tube 133, thereby achieving a good heat dissipation effect through the heat dissipation tube 133. Since the U-shaped grooves 1331 are arranged in sequence along the preset direction D, the heat sink 132 will also be arranged in multiple rows along the preset direction D. It should be understood that in the attached Figure 3 In the embodiment, only three heat sinks 132 are shown by way of example, and the number of heat sinks 132 is not limited thereto. In addition, no heat sink 132 is provided in the UU-shaped groove 1331 between two heat sinks 132. In other embodiments, a heat sink 132 may be provided in each U-shaped groove 1331.

[0037] Further, in some specific embodiments, the height of the heat sink 132 is lower than the height of the heat pipe 133, and the distance between the side wall of the heat sink 132 and the heat pipe 133 is smaller than the preset distance. The height of the heat sink 132 is lower than the height of the heat pipe 133, which can ensure that the top of the heat sink 132 can also be opposite to the heat pipe 133, thereby ensuring that the heat pipe 133 has a good heat dissipation effect on the heat sink 132. The preset distance can be set according to actual needs and can be a smaller distance value. When the distance between the side wall of the heat sink 132 and the heat pipe 133 is smaller than the preset distance, it can ensure that there is a good heat exchange effect between the heat sink 132 and the heat pipe 133, thereby dissipating the heat of the heat sink 132 well.

[0038] Continue to combine Figure 2, in some specific embodiments, the first heat dissipation component 13 further includes a liquid storage device 134, a power device 135, and a heat exchanger 136. The liquid storage device 134, the power device 135, and the heat exchanger 136 are connected to form a heat dissipation loop. Among them, the liquid storage device 134 is used to store the coolant, the power device 135 is used to circulate the coolant in the heat dissipation loop, and the heat exchanger 136 is used to dissipate the heat of the coolant through heat exchange.

[0039] Specifically, the liquid storage device 134 can be a device between the liquid storage tanks, as long as it can store the coolant. The power device 135 can be a water pump or the like, and the heat exchanger 136 can be a heat exchanger 136 in the prior art, without specific limitations. The liquid storage device 134, the power device 135, and the heat exchanger 136 can be connected through pipelines to form a complete closed heat dissipation loop. When the heat dissipation loop is working, the power device 135 circulates the coolant, so that the coolant with a lower temperature exchanges heat with the heat dissipation substrate 131 and the heat dissipation fins 132. After the heat exchange, the temperature of the coolant rises and enters the heat exchanger 136. The heat exchanger 136 can dissipate the heat of the coolant passing through its interior, thereby reducing the temperature of the coolant. The coolant with a lower temperature can further exchange heat with the heat dissipation substrate 131 and the heat dissipation fins 132, and so on in a cycle.

[0040] It should be understood that Figure 2 the arrangement positions of the liquid storage device 134, the power device 135, and the heat exchanger 136 shown in

[0041] Now, a further description of the second heat dissipation component 14 will be given:

[0042] Combined with Figure 2 , in some specific embodiments, the second heat dissipation component 14 includes a fan 141 and a cooling device 142. The fan 141 is used to form a heat dissipation air flow to direct it to the accommodation cavity 121, and the cooling device 142 is used to cool the heat dissipation air flow. Based on this arrangement, after the fan 141 forms the heat dissipation air flow, the cooling device 142 will cool the heat dissipation air flow so that the cooled heat dissipation air flow is introduced into the accommodation cavity 121 to dissipate heat from the battery pack 20 through the heat dissipation air flow. Through this arrangement, not only can a heat dissipation air flow be formed, but also the temperature of the heat dissipation air flow can be lowered, so that the heat dissipation air flow can achieve a good heat dissipation effect on the battery pack 20.

[0043] For the specific setting mode of the cooling device 142, in some specific embodiments, the cooling device 142 includes a water storage tank 1421 and an atomizing nozzle 1422 that are interconnected. The water storage tank 1421 is used to supply water to the atomizing nozzle 1422, and the atomizing nozzle 1422 is used to form a spray to blow towards the heat dissipation air flow, so as to dissipate heat from the heat dissipation air flow through the spray. Among them, both the water storage tank 1421 and the atomizing nozzle 1422 can be arranged above the flow path of the heat dissipation air flow, so that the formed spray drops based on gravity and contacts the heat dissipation air flow to achieve a good heat dissipation effect on the heat dissipation air flow.

[0044] For a further specific arrangement mode of the fan 141 and the cooling device 142, the fan 141 can be arranged on the side wall of the housing 11. At this time, the side wall of the housing 11 can be provided with an air inlet, and a dust-proof net can be arranged at the air inlet to reduce sundries from entering the housing 11. The water storage tank 1421 can be arranged on the top wall of the housing 11, and the water filling port of the water storage tank 1421 can be exposed on the top wall of the housing 11 for easy water filling. The atomizing nozzle 1422 can be directly arranged below the water storage tank 1421, and the number of the atomizing nozzles 1422 can be multiple, which is not specifically limited here.

[0045] For a further specific setting mode of the second heat dissipation component 14, combined with Figure 2 , in some specific embodiments, the second heat dissipation component 14 further includes a wind guiding structure. The wind guiding structure includes an air inlet structure 1431 and a dehumidifying structure 1432. The air inlet structure 1431 is arranged in a horn shape to form an air inlet duct, and the dehumidifying structure 1432 forms a dehumidifying duct. A dehumidifying agent 1433 is arranged in the dehumidifying duct, and the dehumidifying agent 1433 is used to dehumidify the heat dissipation air flow in the dehumidifying duct. It should be understood that by arranging the air inlet structure 1431 in a horn shape, a good collection and guiding effect on the heat dissipation air flow can be achieved, and a certain accelerating effect on the heat dissipation air flow can be achieved. The dehumidifying agent 1433 can be a substance in the prior art that can have a good adsorption effect on water vapor in the air, which is not specifically limited here. The dehumidifying agent 1433 can be arranged on the inner wall of the dehumidifying duct, but it is not limited thereto.

[0046] Among them, the air inlet with a larger size of the air inlet structure 1431 is arranged opposite to the upper fan 141, and the air inlet of the air inlet structure of the inlet fan 141 can have the same size as the inner wall of the housing 11. Thus, the housing 11 is divided into an independent space by the air inlet structure 1431, and the fan 141 and the cooling structure are both arranged in this independent space. At this time, the heat dissipation air flow formed by the fan 141 can all be introduced into the air inlet structure 1431. At this time, the dehumidifying duct is respectively communicated with the air outlet with a smaller size of the air inlet structure 1431 and the accommodating cavity 121, so that the heat dissipation air flow in the air inlet duct can be introduced into the dehumidifying duct, and then the heat dissipation air flow can be dehumidified through the dehumidifying duct.

[0047] Among them, an air inlet can be provided on the side wall of the heat dissipation box 12. The air inlet is communicated with one end of the dehumidification air duct to introduce the heat dissipation air flow in the dehumidification air duct into the accommodation cavity 121. At this time, a dust-proof net can be provided at the air inlet to reduce the dust entering the accommodation cavity 121. Similarly, a dust-proof net can also be provided at the air outlet on the other side of the heat dissipation box 12. In order to smoothly export the heat dissipation air flow exported by the heat dissipation box 12, an air outlet pipe 15 is provided on the other side of the housing 11. By exhausting air through the air outlet pipe 15, the entry of external impurities into the housing 11 can be reduced.

[0048] The above embodiments only introduce the heat dissipation of the battery pack 20 through the first heat dissipation component 13 and the second heat dissipation component 14. However, in some application scenarios, it is necessary to heat the battery pack 20. In order to achieve the heating of the battery pack 20, the following embodiments are further described:

[0049] In some specific embodiments, the second heat dissipation component 14 further includes a heating device (not shown in the figure). The heating device is used to heat the air flow formed by the fan 141. Among them, the heating device can be a device such as a heating tube, and no specific limitation is made here. After the fan 141 forms an air flow, the air flow can pass through the heating device, and then a heated air flow is formed.

[0050] At this time, when the ambient temperature of the vehicle is lower than the preset ambient temperature, the fan 141 is used to form a heated air flow. The heated air flow enters the accommodation cavity 121 after being heated by the heating device to heat the battery pack 20. The preset ambient temperature can be a relatively low ambient temperature, such as a negative temperature.

[0051] The second aspect of the present application provides a vehicle, including the battery pack heat dissipation component 10 of the vehicle in any of the above embodiments and the battery pack 20. The battery pack heat dissipation component 10 of the vehicle is used to dissipate heat from the battery pack 20.

[0052] In summary, the battery pack heat dissipation component 10 and the vehicle provided by the present application include: a heat dissipation box 12, which is hollow and forms a receiving cavity 121 for receiving the battery pack 20; a first heat dissipation component 13, which is arranged on the top of the heat dissipation box 12, and the heat of the battery pack 20 can be conducted to the first heat dissipation component 13 through the heat dissipation box 12, and the first heat dissipation component 13 is used to dissipate the heat of the heat dissipation box 12 through the coolant; a second heat dissipation component 14, which is arranged on one side of the heat dissipation box 12, and the second heat dissipation component 14 is used to form a heat dissipation air flow and conduct the heat dissipation air flow into the receiving cavity 121 to dissipate the heat of the battery pack 20; wherein, when the current temperature of the battery pack 20 is higher than the preset temperature, the first heat dissipation component 13 and / or the second heat dissipation component 14 is started to dissipate the heat of the battery pack 20. Therefore, through the settings of the heat dissipation box 12, the first heat dissipation component 13 and the second heat dissipation component 14, good heat dissipation of the battery pack 20 can be achieved in multiple ways, thereby ensuring that the battery pack 20 can work normally.

[0053] The above are only the optional embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made by using the content of the specification and drawings of the present application under the concept of the solution of the present application, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery pack heat dissipation assembly for a vehicle, characterized in that: include: A heat dissipation box is hollow and has a receiving cavity, and the receiving cavity is used to receive the battery pack; A first heat dissipation component is arranged on the top of the heat dissipation box, and the heat of the battery pack can be transferred to the first heat dissipation component through the heat dissipation box, and the first heat dissipation component is used to dissipate heat from the heat dissipation box through a coolant; A second heat dissipation component is disposed on one side of the heat dissipation box, and the second heat dissipation component is used to form a heat dissipation airflow and conduct the heat dissipation airflow into the accommodating cavity to achieve heat dissipation of the battery pack; When the current temperature of the battery pack is higher than a preset temperature, the first heat dissipation component and / or the second heat dissipation component is started to dissipate the heat of the battery pack.

2. The battery pack heat dissipation assembly according to claim 1, characterized in that: The first heat dissipation component comprises: A heat dissipation substrate is arranged on the top of the heat dissipation box, and the heat dissipation substrate is attached to the top wall of the heat dissipation box; A heat sink is disposed on the heat sink substrate, and the heat sink is used for the heat sink substrate to dissipate heat; A heat dissipation pipe is arranged on the heat dissipation substrate, and is used to conduct the cooling liquid. The heat dissipation pipe is arranged adjacent to the heat dissipation fin to dissipate heat from the heat dissipation fin and the heat dissipation substrate through the cooling liquid.

3. The battery pack heat dissipation assembly according to claim 2, characterized in that: The heat dissipation pipe is bent in an S shape and arranged on the top wall of the heat dissipation substrate to form a plurality of U-shaped grooves arranged along a preset direction. The heat dissipation fins are arranged in the U-shaped grooves for heat dissipation, and the heat dissipation fins are arranged in a plurality of rows along the preset direction.

4. The battery pack heat dissipation assembly according to claim 3, characterized in that: The height of the heat sink is lower than the height of the heat sink tube, and the distance between the side wall of the heat sink and the heat sink tube is smaller than a preset distance.

5. The battery pack heat dissipation assembly according to claim 2, characterized in that: The first heat dissipation component further includes a liquid storage device, a power device and a heat exchanger, and the liquid storage device, the power device and the heat exchanger are connected to form a heat dissipation circuit; The liquid storage device is used to store the coolant, the power device is used to realize the circulation of the coolant in the heat dissipation circuit, and the heat exchanger is used to dissipate the heat of the coolant through heat exchange.

6. The battery pack heat dissipation assembly according to claim 1, characterized in that: The second heat dissipation component comprises: A fan, used for forming a heat dissipation airflow to guide the airflow to the accommodating cavity; A cooling device, used to cool the heat dissipation airflow; Among them, after the fan forms the heat dissipation airflow, the cooling device cools the heat dissipation airflow so that the cooled heat dissipation airflow is introduced into the accommodating cavity to dissipate heat from the battery pack through the heat dissipation airflow.

7. The battery pack heat dissipation assembly according to claim 6, characterized in that: The cooling device includes a water tank and an atomizing nozzle which are interconnected. The water tank is used to supply water to the atomizing nozzle. The atomizing nozzle is used to form a spray to blow toward the heat dissipation airflow so as to dissipate heat from the heat dissipation airflow through the spray.

8. The battery pack heat dissipation assembly according to claim 6, characterized in that: The second heat dissipation component further includes an air guide structure, the air guide structure includes an air inlet structure and a dehumidification structure, the air inlet structure is arranged in a trumpet shape and forms an air inlet duct, the dehumidification structure forms a dehumidification duct, and a dehumidification agent is arranged in the dehumidification duct; Among them, the air inlet with a larger air inlet structure size is arranged opposite to the above-mentioned fan, the dehumidification air duct is respectively connected with the air outlet with a smaller air inlet structure size and the accommodating cavity, and the dehumidifier is used to dehumidify the heat dissipation airflow in the dehumidification air duct.

9. The battery pack heat dissipation assembly according to claim 1, characterized in that: The second heat dissipation assembly further includes a heating device, and the heating device is used to heat the airflow formed by the fan; Wherein, when the ambient temperature of the vehicle is lower than a preset ambient temperature, the fan is used to form a heating airflow, and the heating airflow is heated by the heating device and then enters the accommodating cavity to heat the battery pack.

10. A vehicle, characterized in that: It comprises a battery pack heat dissipation assembly and a battery pack as described in any one of claims 1 to 9, wherein the battery pack heat dissipation assembly is used to dissipate heat from the battery pack.

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