Ventilation heat management device and heat management system

Abstract

The utility model discloses a ventilation heat management device and a heat management system. The ventilation heat management device comprises a shell, a heat management part and a ventilation assembly. A containing space is formed in the shell, the shell comprises a first through hole and a second through hole, and the first through hole and the second through hole are arranged to be communicated with the containing space and used for enabling a heat management medium to flow into or flow out of the containing space. The heat management part is used for heating or cooling the heat management medium in the containing space. A vent assembly is used to communicate the interior of the housing with the exterior of the housing. According to the ventilation heat management device provided by the embodiment, the functions of heat management, ventilation, liquid supplementing and liquid storage can be completed, meanwhile, the number of other devices of a system where the heat management ventilation device is located is reduced, and the pipeline layout of the system is simpler.

Description

Technical Field

[0001] The present application relates to the field of thermal management technology, and in particular to a ventilation thermal management device and a thermal management system. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] However, the performance of the battery will be affected by the use environment. For example, in low or high temperature environments, the performance of the battery may decline to a certain extent, so corresponding devices and systems are needed to manage the heat of the battery pack. In addition, the presence of gas in the thermal management system can easily cause oxidation corrosion of the system and reduce the life of the system. Therefore, the existing thermal management system has the problems of complex system and high cost. Utility Model Content

[0004] In view of the above problems, the present application provides a ventilation thermal management device and a thermal management system. By integrating the thermal management, ventilation, liquid storage and liquid replenishment equipment into the ventilation thermal management device, the device has the functions of thermal management, ventilation, liquid replenishment and liquid storage, which reduces the number of other devices in the thermal management system, simplifies the pipeline layout of the thermal management system, and reduces the cost.

[0005] On the one hand, an embodiment of the present application provides a ventilation thermal management device, which includes a shell, a thermal management component and a ventilation assembly. A storage space is provided in the shell, and the shell includes a first through hole and a second through hole, and the first through hole and the second through hole are arranged to communicate with the storage space, so as to allow a thermal management medium to flow into or out of the storage space. The thermal management component is used to heat up or cool down the thermal management medium in the storage space. The ventilation assembly is used to connect the fluid inside the shell with the fluid outside the shell.

[0006] The heat management component, the ventilation assembly and the shell with the accommodating space are integrated together to form a ventilation heat management device, so that the ventilation heat management device can complete the functions of heat management, ventilation, fluid replenishment and fluid storage.

[0007] In some embodiments, along the height direction of the shell, the first through hole is the liquid inlet, the second through hole is the liquid outlet, and the first through hole is higher than the second through hole; or the first through hole is the liquid outlet, the second through hole is the liquid inlet, and the second through hole is higher than the first through hole.

[0008] Setting the height of the liquid inlet to be higher than the liquid outlet helps the liquid to flow into the ventilation thermal management device from a high place, and also facilitates the liquid to flow out of the ventilation thermal management device from a low place.

[0009] In some embodiments, the vent assembly is disposed on top of the housing.

[0010] By arranging the vent assembly at the top of the housing, it is helpful for gas to be discharged from the top and it is also prevented that the thermal management medium leaks out of the vent assembly.

[0011] In some embodiments, the ventilation assembly includes an exhaust valve, and when the gas pressure in the shell is greater than a first threshold or less than a second threshold relative to the gas pressure outside the shell, the exhaust valve is opened to adjust the gas pressure in the shell.

[0012] By arranging a ventilation assembly with an exhaust valve on the top of the shell, when the air pressure in the shell of the ventilation thermal management device is too high or too low, the exhaust valve is used to exhaust air to adjust the pressure inside and outside the shell.

[0013] In some embodiments, the vent assembly includes a ball valve configured to connect to the exhaust valve and the receiving space of the housing.

[0014] By setting the ball valve, the exhaust process of the ventilation thermal management device and the process of replenishing the thermal management medium do not interfere with each other, which helps to prevent gas from being introduced into the ventilation thermal management device when replenishing the thermal management medium.

[0015] On the other hand, an embodiment of the present application provides a thermal management system, including a ventilation thermal management device, a component to be thermally managed, and a liquid inlet pipe or a liquid outlet pipe. The ventilation thermal management device is used to perform thermal management on the component to be thermally managed, the liquid inlet pipe is configured to be connected to the first through hole and the component to be thermally managed, and the liquid outlet pipe is configured to be connected to the second through hole and the component to be thermally managed.

[0016] A ventilation thermal management device is provided in the thermal management system, so that the system can perform thermal management on the thermal management components to maintain their operating temperature under normal operating conditions, and can also discharge the gas in the thermal management system in time, which helps to keep the entire thermal management system in an operating environment that meets the gas concentration requirements of the thermal management system.

[0017] In some embodiments, the thermal management component is used to heat up the thermal management medium in the accommodation space, and the thermal management system further includes a refrigerator for cooling down the thermal management medium.

[0018] By providing a cooler in the thermal management system, the thermal management medium can be cooled better, thereby achieving a better cooling effect on the components to be thermally managed.

[0019] In some embodiments, the thermal management system includes a fluid replenishment component, which is configured to be connected to the thermal management device, and the fluid replenishment component is used to replenish the thermal management medium for the ventilation thermal management device.

[0020] By providing a fluid replenishment component, the fluid in the thermal management system can be replenished, so that the thermal management medium in the system is maintained within a suitable range, which helps to improve the thermal management effect of the thermal management components.

[0021] In some embodiments, the fluid replenishment component includes an exhaust device, which is used to exhaust air from the ventilation thermal management device so that the fluid replenishment component replenishes fluid from the ventilation thermal management device.

[0022] Providing an exhaust device in the thermal management system can actively reduce the gas content in the ventilation thermal management device, and also help to replenish the fluid of the ventilation thermal management device and reduce the inflow of gas during the replenishment process.

[0023] In some embodiments, the fluid infusion component further includes a fluid infusion box, and the fluid infusion box and the air extraction device are respectively connected to the ventilation component.

[0024] The thermal management medium in the fluid replenishment tank can be replenished into the ventilation thermal management device in time, thereby replenishing the thermal management medium in the thermal management system, which helps to increase or decrease the temperature of the components to be thermally managed.

[0025] In some embodiments, along the height direction of the housing, the height of the first through hole is higher than the height of the second through hole.

[0026] By setting the height of the first through hole higher than the height of the second through hole, the heat management medium flows in from the first through hole, which facilitates the heat management medium to flow out from the second through hole.

[0027] In some embodiments, a height of the second through hole is lower than a height of the thermal management medium.

[0028] The thermal management medium can flow more easily from the ventilation thermal management device to the thermal management system under the action of gravity, and the second through hole as the liquid outlet of the ventilation thermal management device should be lower than the lowest height of the thermal management medium in the shell to prevent air from entering the system pipeline through the second through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0030] Figure 1 This is a schematic diagram of the structure of a ventilation thermal management device according to some embodiments of the present application;

[0031] Figure 2 An exploded view of a ventilation thermal management device according to some embodiments of the present application;

[0032] Figure 3 A cross-sectional view of a ventilation thermal management device according to some embodiments of the present application;

[0033] Figure 4A schematic diagram of the structure of an exhaust valve of a ventilation thermal management device according to some embodiments of the present application;

[0034] Figure 5 A schematic structural diagram of another ventilation thermal management device according to some embodiments of the present application;

[0035] Figure 6 A cross-sectional view of another ventilation thermal management device according to some embodiments of the present application;

[0036] Figure 7 A schematic diagram of the structure of a ball valve of another ventilation thermal management device according to some embodiments of the present application;

[0037] Figure 8 This is a schematic structural diagram of another ventilation thermal management device according to some embodiments of the present application;

[0038] Fig. 9 A cross-sectional view of another ventilation thermal management device according to some embodiments of the present application;

[0039] Fig.10 A schematic diagram of the structure of a ball valve of another ventilation thermal management device according to some embodiments of the present application;

[0040] Fig.11 A schematic diagram of a thermal management system according to some embodiments of the present application;

[0041] Fig.12 A schematic diagram of another thermal management system according to some embodiments of the present application.

[0042] Description of reference numerals:

[0043] Thermal management system 1, ventilation thermal management device 2, housing 21, first through hole 22, second through hole 23, thermal management member 24, ventilation assembly 25, exhaust valve 251, ball valve 252, accommodating space 26;

[0044] Component to be thermally managed 3, liquid inlet pipe 4, liquid outlet pipe 5, refrigerator 6, liquid replenishing component 7, air extraction device 71, liquid replenishing tank 72, thermal management medium 8. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0048] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0050] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0051] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0052] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0054] When the battery works in a low temperature environment, it will lead to low charging efficiency and low discharge capacity, and may also cause damage to the battery's performance and life. Therefore, a preheating device is set in the system where the battery is located to increase the ambient temperature of the battery to a suitable temperature, thereby improving the battery's charging efficiency and capacity. In addition, the battery will also generate heat during the charging and discharging process. The battery is prone to thermal runaway in a high temperature environment, so it is necessary to set up a heat dissipation and cooling device in the battery system.

[0055] The thermal management system needs equipment for system fluid replenishment, fluid storage, thermal management, and exhaust. When these devices are connected to the battery thermal management system, the system pipelines often become complicated. In order to simplify the system pipelines and reduce the space occupied by the liquid storage equipment, thermal management equipment, and exhaust equipment, the liquid storage equipment, thermal management equipment, and exhaust equipment are integrated into one device to reduce the total device space occupied while achieving the same function.

[0056] By providing a ventilation thermal management device, the functions of ventilation, liquid storage and thermal management can be achieved simultaneously, thereby improving the space utilization rate of the entire system.

[0057] The ventilation thermal management device disclosed in the embodiment of the present application can be used in an energy storage system or a battery system. The energy storage products in the energy storage system can be energy storage boxes, energy storage cabinets, etc., and the batteries in the battery system can be used for power tools, electric vehicles, electric vehicles, ships, spacecraft, etc. Among them, spacecraft can include airplanes, rockets, space shuttles, and spacecrafts, etc. The thermal management system disclosed in this application can be applied in the field of energy storage or the field of batteries, etc.

[0058] The present application embodiment discloses a ventilation thermal management device 2, see Figure 1 , Figure 2 , Figure 3 The ventilation thermal management device 2 includes a housing 21, a thermal management component 24 and a ventilation assembly 25. The housing 21 is provided with a receiving space 26, and the housing 21 includes a first through hole 22 and a second through hole 23, which are arranged to communicate with the receiving space 26 so as to allow the thermal management medium 8 to flow into or out of the receiving space 26. The thermal management component 24 is used to increase or decrease the temperature of the thermal management medium 8 in the receiving space 26. The ventilation assembly 25 is used to connect the fluid inside the housing 21 with the fluid outside the housing 21.

[0059] The ventilation thermal management device 2 is a device that can perform ventilation and thermal management, such as an exhaust heating device or an exhaust heat dissipation device. In addition, the ventilation thermal management device 2 can also perform both exhaust and intake functions. The ventilation thermal management device 2 can be a device with a cylindrical or cylindrical main body shape. The ventilation thermal management device 2 can be made of a variety of materials such as metal and non-metal. The ventilation thermal management device 2 is arranged in the system to heat or dissipate the thermal management medium 8 in the system and discharge excess gas in the system.

[0060] The shell 21 is the outer shell of the ventilation thermal management device 2. A holding space 26 is formed inside the shell 21, which can hold the thermal management medium 8. The shell 21 can protect the internal components of the holding space 26 from direct collision and scratches by external forces. The shell 21 can be cylindrical or cylindrical, and has good structural stability and space utilization. The shell 21 can be a prism, a prism, a frustum, or other shaped structures. The shell 21 can be a metal or non-metal material. A first through hole 22 and a second through hole 23 are provided on the shell 21, and the first through hole 22 and the second through hole 23 are connected to the system pipelines respectively. The first through hole 22 can be the liquid inlet of the ventilation thermal management device 2, and the second through hole 23 can be the liquid outlet. Similarly, the second through hole 23 can be the liquid inlet of the ventilation thermal management device 2, and the first through hole 22 can be the liquid outlet. In some embodiments, the height of the liquid inlet can be higher than the liquid outlet, and the liquid outlet is arranged at the bottom of the shell 21 to facilitate the outflow of the liquid.

[0061] The ventilation thermal management device 2 can also be used to store and collect the thermal management medium 8. The thermal management medium 8 can be a thermal management liquid, and the thermal management medium 8 can be water, ethylene glycol, and a mixed liquid of the two, and can also be oil, such as synthetic hydrocarbon oil, silicone oil, lipid oil, etc. The thermal management medium 8 is mainly used to heat or cool the equipment in the system where the ventilation thermal management device 2 is located.

[0062] The heat management component 24 is a device for heating or cooling the heat management medium 8 in the accommodating space 26. Optionally, the heat management component 24 can be a heating component such as a heating wire or a heating rod, which is used to heat the heat management medium 8. It can be set at the bottom of the shell 21 to facilitate contact with the heat management medium 8, or it can be set at the top and extend downward, or it can be set at other parts of the shell 21 and extend downward, so that a part of the heat management component 24 is in contact with the heat management medium 8 and heats it. Optionally, the heat management component 24 can be a heat dissipation component such as a fan or a spiral blade, which is used to dissipate heat from the heat management medium 8, and can be set on the side or top of the ventilation thermal management device 2. The connection between the heat management component 24 and the shell 21 can be a threaded connection, a flange connection, a plug-in connection, a welding connection, etc. Optionally, when the heat management component 24 is a heater, the gas in the shell 21 can be expanded by heat, thereby accelerating the discharge of the gas in the shell 21.

[0063] The ventilation assembly 25 is a device for connecting the fluid inside the shell 21 with the outside of the shell 21. The ventilation assembly 25 is arranged at the upper part of the shell 21 in the height direction. Since the gas gathers along the shell 21 to the top of the shell 21, the ventilation assembly 25 can discharge the excess gas above the shell 21, so that the ventilation thermal management device 2 is not easily corroded and oxidized. The connection method between the ventilation assembly 25 and the shell 21 can be threaded connection, flange connection, plug-in connection, welding and other connection methods. Optionally, the ventilation assembly 25 can pump the gas pressure in the shell 21 to less than the atmospheric pressure, and the thermal management medium 8 is supplemented from the outside into the shell 21 under the action of the air pressure.

[0064] Optionally, the ventilation assembly 25 is arranged in the middle of the top of the housing 21, the heat management member 24 is arranged in the middle of the bottom of the housing 21, and the first through hole 22 is located higher than the second through hole 23. Optionally, the ventilation heat management device 2 can be formed by connecting multiple components; or the entire device can be divided into two halves, and the two parts are formed by casting.

[0065] A ventilation thermal management device 2 is formed by integrating a thermal management component 24, a ventilation assembly 25 and a shell 21 having a accommodating space 26, so that the system in which the device is located can complete the thermal management, ventilation, fluid replenishment and fluid storage functions, while reducing the number of components in the system in which the device is located, making the pipeline design of the system simpler.

[0066] In some embodiments, see Figure 3 , along the height direction of the shell 21, the first through hole 22 is the liquid inlet, the second through hole 23 is the liquid outlet, and the first through hole 22 is higher than the second through hole 23; or the first through hole 22 is the liquid outlet, the second through hole 23 is the liquid inlet, and the second through hole 23 is higher than the first through hole 22.

[0067] The liquid inlet is provided on the ventilation thermal management device 2 so that the fluid in the system flows into the hole of the ventilation thermal management device 2. The liquid outlet is provided on the ventilation thermal management device 2 so that the fluid in the system flows out of the hole of the ventilation thermal management device 2. When the first through hole 22 is the liquid inlet and the second through hole 23 is the liquid outlet, the first through hole 22 is higher than the second through hole 23, which facilitates the liquid to flow into the ventilation thermal management device 2 from a high place and also facilitates the liquid to flow out of the ventilation thermal management device 2 from a low place. Similarly, when the first through hole 22 is the liquid outlet and the second through hole 23 is the liquid inlet, the second through hole 23 is higher than the first through hole 22.

[0068] By setting the height of the liquid inlet to be higher than the liquid outlet, it is helpful for the liquid to flow into the ventilation thermal management device 2 from a high place, and it is also convenient for the liquid to flow out of the ventilation thermal management device 2 from a low place.

[0069] In some embodiments, see Figure 3 , the vent assembly 25 is arranged at the top of the shell 21. The gas density is small and will gather above the shell 21. The vent assembly 25 is opened above the shell 21 so that the gas can be discharged from the top better. In addition, when the thermal management medium 8 is liquid, the liquid generally gathers below the shell 21. The vent assembly 25 should be arranged away from the liquid to avoid leakage. By arranging the vent assembly 25 at the top of the shell 21, it is helpful for the gas to be discharged from the top and the thermal management medium 8 is prevented from leaking from the vent assembly 25.

[0070] In some embodiments, see Figure 3 , Figure 4 The ventilation component 25 includes an exhaust valve 251. When the gas pressure in the shell 21 is greater than a first threshold or less than a second threshold relative to the gas pressure outside the shell 21, the exhaust valve 251 is opened to adjust the gas pressure in the shell 21.

[0071] The exhaust valve 251 is a device that controls the inflow and outflow of gas in the system. The exhaust valve 251 is a part of the ventilation component 25. When there is gas in the ventilation thermal management device 2 and the system in which it is located, the gas will climb upwards and eventually gather at the highest point of the system. The exhaust valve 251 is generally installed at a high point of the ventilation thermal management device 2. When the gas enters the exhaust valve 251 and gathers at the upper part of the exhaust valve 251, as the gas in the exhaust valve 251 increases, the pressure rises, and the pressure difference with the gas outside the shell 21 is greater than the first threshold, thereby opening the exhaust port of the exhaust valve 251. After the gas is exhausted, the pressure decreases and the exhaust port is closed. The air pressure difference can be the gas pressure inside the shell minus the gas pressure outside the shell. The first threshold can be a positive value. When the air pressure difference is greater than the first threshold, the internal and external air pressure difference causes the exhaust valve to open. The first threshold can be set as needed. Similarly, when the ventilation thermal management device 2 and its system generate negative pressure, that is, the pressure difference obtained by subtracting the gas pressure outside the shell from the gas pressure inside the shell is a negative value, the smaller the value, the greater the pressure difference between the two. When the pressure difference with the gas outside the shell 21 is less than the second threshold, the exhaust port is opened. Since the external atmospheric pressure is greater than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. Figure 4 As shown, a valve cap is provided on the exhaust valve 251, and the valve cap can be used to manually stop exhaust. The second threshold value can be a negative value less than zero, and the second threshold value can be set as needed. The exhaust valve 251 can be made of one or more metals such as stainless steel and polymer materials such as polypropylene. Optionally, a pressure gauge can also be integrated on the exhaust valve 251 to indicate the internal pressure of the ventilation thermal management device 2.

[0072] By arranging a ventilation assembly 25 with an exhaust valve 251 on the top of the shell 21 , when the air pressure in the shell 21 of the ventilation thermal management device 2 is too high or too low, the exhaust valve 251 is used to exhaust air and adjust the internal and external pressures of the shell 21 .

[0073] In some embodiments, see Figures 5 to 10 The ventilation assembly 25 includes a ball valve 252 , which is configured to be connected to the exhaust valve 251 and the accommodating space 26 of the shell 21 .

[0074] The ball valve 252 is generally provided with a spherical opening and closing member inside. The ball valve 252 can be used for regulating and controlling gas and fluid. The ball valve 252 can be named according to the number of channels thereon. A ball valve 252 with two channels is a two-way ball valve 252, a ball valve 252 with three channels is a three-way ball valve 252, and a ball valve 252 with more than three channels is called a multi-way ball valve 252. The ball valve 252 can be a two-way ball valve 252, a three-way ball valve 252 or a multi-way ball valve 252. The multi-way ball valve 252 can not only flexibly control the confluence, diversion and switching of the flow direction of the medium on the pipeline, but also close any channel to connect another channel. The ball valve 252 is divided into pneumatic ball valves 252, electric ball valves 252 or manual ball valves 252 according to the driving mode.

[0075] Alternatively, if Figures 5 and 6 As shown, the upper end channel of the two-way ball valve 252 is connected to the exhaust valve 251, and the lower end channel of the two-way ball valve 252 is connected to the housing 21. Figure 7 As shown, the two-way ball valve 252 can be manually opened or closed by rotating the knob thereon, thereby controlling the gas exchange between the ventilation thermal management device 2 and the outside, which helps to replenish the thermal management medium 8 without introducing air.

[0076] Alternatively, if Figures 8 to 10 As shown, the three-way ball valve 252 can flexibly control the confluence, diversion and flow direction switching of the medium on the pipeline, and can also close any channel to connect the other two channels. The three-way ball valve 252 is arranged between the exhaust valve 251 and the shell 21, wherein two channels are respectively connected to the two, and one channel is connected to the component for supplementing the thermal management medium 8. When supplementing the thermal management medium 8, the switch between the ball valve 252 and the exhaust valve 251 is closed, so that the thermal management medium 8 directly enters the shell 21 through the ball valve 252. When exhausting, the switch of the pipeline connected to the supplementary thermal management medium 8 is closed, so that the gas is discharged from the shell 21 through the ball valve 252 and the exhaust valve 251 to the outside of the device.

[0077] By setting the ball valve 252 to be connected with the exhaust valve 251 and the accommodating space 26 of the shell 21, the exhaust process of the ventilation thermal management device 2 and the process of replenishing the thermal management medium 8 do not interfere with each other, which helps to prevent gas from being introduced into the ventilation thermal management device 2 when replenishing the thermal management medium 8.

[0078] The present application embodiment discloses a thermal management system 1, see Fig.11 , comprising a ventilation thermal management device 2, a component to be thermally managed 3, and a liquid inlet pipe 4 or a liquid outlet pipe 5. The ventilation thermal management device 2 is used to perform thermal management on the component to be thermally managed 3, the liquid inlet pipe 4 is configured to be connected to the first through hole 22 and the component to be thermally managed 3, and the liquid outlet pipe 5 is configured to be connected to the second through hole 23 and the component to be thermally managed 3.

[0079] See also Fig.11The thermal management system 1 can be used in the field of energy storage, and can also be used in the fields of vehicles, ships, etc. The thermal management system 1 includes a ventilation thermal management device 2, a component to be thermally managed 3, and a liquid inlet pipe 4 or a liquid outlet pipe 5. The component to be thermally managed 3 can be a battery or other component that needs to control the temperature for thermal management. The battery can be a battery cell, a battery module, a battery pack, or an energy storage box formed by a battery pack, etc.

[0080] The liquid inlet pipe 4 is a pipe connected to both the first through hole 22 and the component to be thermally managed 3, and the liquid outlet pipe 5 is a pipe connected to both the second through hole 23 and the component to be thermally managed 3. The connection method of the liquid inlet pipe 4 and the liquid outlet pipe 5 to the first through hole 22 and the second through hole 23 respectively can be welding, gluing or interference fit. The thermal management medium 8 in the thermal management system 1 flows from the liquid inlet pipe 4 into the ventilation thermal management device 2, then flows from the ventilation thermal management device 2 to the liquid outlet pipe 5, then flows to the component to be thermally managed 3, and then flows from the component to be thermally managed 3 to the liquid inlet pipe 4.

[0081] Optionally, when the temperature of the component to be heat-managed 3 is too low, the heat management medium 8 flows from the liquid inlet pipe 4 into the ventilation thermal management device 2, flows to the liquid outlet pipe 5 after being heated by the ventilation thermal management device 2, and then flows to the component to be heat-managed 3 to heat it, and then flows to the liquid inlet pipe 4 from the component to be heat-managed 3. Optionally, when the temperature of the component to be heat-managed 3 is too high, the heat management medium 8 flows from the liquid inlet pipe 4 into the ventilation thermal management device 2, flows to the liquid outlet pipe 5 after being dissipated by the ventilation thermal management device 2, and then flows to the component to be heat-managed 3 to cool it, and then flows to the liquid inlet pipe 4 from the component to be heat-managed 3. Fig.11 As shown, optionally, the ventilation thermal management device 2 is arranged above the system, and the gas in the system rises along the pipeline and converges into the shell 21 of the ventilation thermal management component, achieving the effect of gas gathering, which is convenient for uniformly discharging the gas in the system.

[0082] A ventilation thermal management device 2 is provided in the thermal management system 1, so that the system can perform thermal management on the thermal management component 3 to keep it at a suitable working temperature, and can also discharge the gas in the thermal management system 1 in time, which helps to keep the entire thermal management system 1 in a suitable working environment.

[0083] In some embodiments, see Fig.12, the thermal management component 24 is used to heat up the thermal management medium 8 in the accommodation space 26, and the thermal management system 1 also includes a refrigerator 6 for cooling the thermal management medium 8. The refrigerator 6 is also called a condenser, and is divided into water-cooled type, air-cooled type, etc. according to the cooling method. The refrigerator 6 is used to cool the thermal management medium 8 in the thermal management system 1. Optionally, when the temperature of the component 3 to be thermally managed is too high, the thermal management component 24 of the ventilation thermal management device 2 is turned off, the temperature of the thermal management medium 8 is reduced after passing through the refrigerator 6, and the low-temperature thermal management medium 8 continues to cool the component 3 to be thermally managed. Optionally, when the temperature of the component 3 to be thermally managed is too high, the thermal management component 24 of the ventilation thermal management device 2 has a general heat dissipation effect on the thermal management medium 8, and the thermal management medium 8 has a better cooling effect after passing through the refrigerator 6, and the low-temperature thermal management medium 8 continues to cool the component 3 to be thermally managed. By arranging the refrigerator 6 in the thermal management system 1, the thermal management medium 8 can be better cooled, so that the cooling effect of the component 3 to be thermally managed is better.

[0084] In some embodiments, see Fig.12 The thermal management system 1 includes a fluid replenishment component 7, which is configured to be connected to the thermal management device, and is used to replenish the thermal management medium 8 for the ventilation thermal management device 2. The fluid replenishment component 7 can be an equipment component for replenishing fluid in the ventilation thermal management device 2, including a component for storing the thermal management medium 8 and a component that helps replenish the fluid. By providing the fluid replenishment component 7 in the thermal management system 1, the liquid in the thermal management system 1 can be replenished, and the thermal management medium 8 in the thermal management system 1 is maintained within a suitable range, so that the thermal management effect of the thermal management medium 8 on the thermal management component 3 is better.

[0085] In some embodiments, see Fig.12 The fluid replenishment component 7 includes an exhaust device 71, which is used to exhaust air from the ventilation thermal management device 2 so that the fluid replenishment component 7 replenishes fluid to the ventilation thermal management device 2.

[0086] The exhaust device 71 may be a device for exhausting air from the thermal management system 1. If there is a certain amount of gas in the ventilation thermal management device 2 and the exhaust valve 251 or the ventilation component 25 is not opened to exhaust gas, the gas in the ventilation thermal management device 2 may be extracted by the exhaust device 71, thereby reducing the gas in the ventilation thermal management device 2. Optionally, the exhaust device 71 may exhaust the ventilation thermal management device 2 to a negative pressure or vacuum. When the exhaust device 71 extracts the gas in the ventilation thermal management device 2 and makes the air pressure in its housing 21 lower than the atmospheric pressure, the components in the liquid replenishment component 7 for replenishing and storing liquid will push the liquid into the ventilation thermal management device 2 under the action of the atmospheric pressure.

[0087] By providing the exhaust device 71 in the thermal management system 1, the gas content in the ventilation thermal management device 2 can be actively reduced, which is also helpful for replenishing the ventilation thermal management device 2 and reducing the inflow of gas during the replenishment process.

[0088] In some embodiments, see Fig.12 , the refilling assembly 7 also includes a refilling tank 72, and the refilling tank 72 and the exhaust device 71 are respectively connected to the ventilation assembly 25. The refilling tank 72 is a container for storing the thermal management medium 8. When the thermal management system 1 loses the thermal management medium 8 due to system leakage or other reasons, the refilling tank 72 is connected to the ball valve 252 to quickly replenish the liquid into the ventilation thermal management device 2, thereby replenishing the thermal management medium 8 of the thermal management system 1. By arranging the refilling tank 72 in the thermal management system 1, the refilling tank 72 and the exhaust device 71 are respectively connected to the ventilation assembly 25, so that the thermal management medium 8 in the refilling tank 72 can be replenished into the ventilation thermal management device 2 in time, thereby replenishing the thermal management medium 8 in the thermal management system 1, which is helpful for heating or cooling the component 3 to be thermally managed.

[0089] In some embodiments, see Fig.12 , along the height direction of the shell 21 , the height of the first through hole 22 is higher than the height of the second through hole 23 .

[0090] The first through hole 22 is connected to the liquid inlet pipe 4 , and the second through hole 23 is connected to the liquid outlet pipe 5 . By setting the height of the first through hole 22 higher than the height of the second through hole 23 , the heat management medium 8 flows in from the first through hole 22 and flows out from the second through hole 23 .

[0091] In some embodiments, see Fig.12 , the height of the second through hole 23 is lower than the height of the heat management medium 8 .

[0092] By setting the height of the second through hole 23 lower than the thermal management medium 8, the thermal management medium 8 can more easily flow from the ventilation thermal management device 2 to the thermal management system 1 under the action of gravity. In addition, the second through hole 23 as the liquid outlet of the ventilation thermal management device 2 should be lower than the lowest height of the thermal management medium 8 in the shell 21 to prevent air from entering the system pipeline through the second through hole 23.

[0093] The present application provides a ventilation thermal management device 2 and a thermal management system 1 in which the ventilation thermal management device 2 is located. The ventilation thermal management device 2 includes a shell 21, a thermal management component 24, and a ventilation component 25. The shell 21 includes a first through hole 22 and a second through hole 23. The first through hole 22 is a liquid inlet, and the second through hole 23 is a liquid outlet. The first through hole 22 is higher than the second through hole 23, and the height of the second through hole 23 is lower than the height of the thermal management medium 8. The ventilation component 25 is arranged at the top of the shell 21. The ventilation component 25 includes an exhaust valve 251 and a ball valve 252, and the ball valve 252 is a three-way ball valve 252. A thermal management system 1 includes a ventilation thermal management device 2, a component to be thermally managed 3, a liquid inlet pipe 4 and a liquid outlet pipe 5, a refrigerator 6, a liquid replenishment component 7, a water pump and a controller. Among them, the liquid replenishment component 7 includes an air extraction device 71 and a liquid replenishment tank 72. The ventilation thermal management device 2 is arranged above the system.

[0094] The shell 21 of the ventilation thermal management device 2 can store the thermal management medium 8. The ball valve 252 of the ventilation component 25 thereon is connected to the fluid replenishment component 7 for rapid fluid replenishment. The ventilation thermal management device 2 is arranged above the system to gather the gas in the thermal management system 1. The thermal management component 24 therein can heat the thermal management medium 8. During the heating process, the gas in the shell 21 is heated and expanded, thereby achieving the effect of accelerating exhaust. The ventilation thermal management device 2 simultaneously has multiple functions such as liquid storage, fluid replenishment, gas gathering, heating and accelerated exhaust. It is arranged in the thermal management system 1 to effectively simplify the current system complexity and make the system pipeline simpler.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A ventilation thermal management device, characterized in that: include: A housing is provided with a storage space, the housing comprises a first through hole and a second through hole, the first through hole and the second through hole are arranged to communicate with the storage space, so as to allow a heat management medium to flow into or out of the storage space, A heat management component is used to increase or decrease the temperature of the heat management medium in the accommodation space, and a ventilation component is used to connect the interior of the shell with the exterior of the shell.

2. The ventilation thermal management device according to claim 1, wherein: Along the height direction of the shell, the first through hole is a liquid inlet, the second through hole is a liquid outlet, and the first through hole is higher than the second through hole; or the first through hole is a liquid outlet, the second through hole is a liquid inlet, and the second through hole is higher than the first through hole.

3. The ventilation thermal management device according to claim 1, wherein: The vent assembly is disposed on the top of the shell.

4. The ventilation thermal management device according to any one of claims 1 to 3, wherein: The ventilation assembly includes an exhaust valve. When the gas pressure in the shell is greater than a first threshold or less than a second threshold relative to the gas pressure outside the shell, the exhaust valve is opened to adjust the gas pressure in the shell.

5. The ventilation thermal management device according to claim 4, wherein: The ventilation assembly includes a ball valve, which is arranged to be connected to the exhaust valve and the accommodating space of the housing.

6. A thermal management system, characterized in that: include The ventilation thermal management device according to any one of claims 1 to 5; The component to be heat managed, the ventilation thermal management device is used to perform thermal management on the component to be heat managed, A liquid inlet pipe is arranged to be connected to the first through hole and the component to be heat managed, and a liquid outlet pipe is arranged to be connected to the second through hole and the component to be heat managed.

7. The thermal management system according to claim 6, wherein: The heat management component is used to increase the temperature of the heat management medium in the accommodation space. The heat management system also includes a refrigerator for cooling the heat management medium.

8. The thermal management system according to any one of claims 6 to 7, wherein: The thermal management system comprises a fluid replenishment component, which is arranged to be connected to the thermal management device, and the fluid replenishment component is used to replenish the thermal management medium for the ventilation thermal management device.

9. The thermal management system according to claim 8, wherein: The fluid replenishment component includes an air extraction device, and the air extraction device is used to extract air from the ventilation thermal management device so that the fluid replenishment component replenishes fluid to the ventilation thermal management device.

10. The thermal management system according to claim 9, wherein: The fluid replenishment component also includes a fluid replenishment box, and the fluid replenishment box and the air extraction device are respectively connected to the ventilation component.

11. The thermal management system according to any one of claims 6 to 7, wherein: Along the height direction of the housing, the height of the first through hole is higher than the height of the second through hole.

12. The thermal management system according to any one of claims 6 to 7, wherein: The height of the second through hole is lower than the height of the heat management medium.

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