Thermal management assembly, battery device, thermal management system and vehicle

Abstract

The invention provides a thermal management assembly, a battery device, a thermal management system and a vehicle. According to one embodiment of the invention, the heat management assembly comprises an upper shell, a lower shell and a heat management assembly, the lower shell is used for being covered with the upper shell, the lower shell comprises a lower shell body and a partition frame, the lower shell body is provided with a containing space, the partition frame is arranged in the containing space and divides the containing space into a plurality of subspaces, and the subspaces are used for installing batteries; and a second cooling flow channel is arranged in the lower shell, and the second cooling flow channel flows through the lower shell body and the partition frame and is communicated with the first cooling flow channel. According to the scheme, the heat dissipation efficiency of the battery pack can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery packs, and in particular to a thermal management component, a battery device, a thermal management system, and a vehicle. Background Art

[0002] With the rapid development of electric vehicles, the performance and safety of battery packs, as core components, have drawn significant attention. Batteries generate significant heat during charging and discharging. Without timely and effective cooling, the internal temperature of the battery pack can rise rapidly. This not only shortens the battery's service life, leading to capacity degradation, shortened replacement cycles, and increased operating costs, but can also trigger thermal runaway, resulting in serious safety hazards such as fires and explosions.

[0003] In related technologies, battery cooling devices often use a single-sided contact method. In this cooling method, only one side of the battery can contact the cooling medium, resulting in a limited heat dissipation area and low heat dissipation efficiency. Summary of the Invention

[0004] The present application provides a thermal management component, a battery device, a thermal management system, and a vehicle, which can improve the heat dissipation efficiency of a battery pack.

[0005] In a first aspect, the present application provides a thermal management component, comprising:

[0006] an upper shell, wherein a first cooling channel is provided in the upper shell;

[0007] A lower shell, used to cover the upper shell, the lower shell comprising a lower shell body and a partition, the lower shell body having a storage space, the partition being arranged in the storage space to divide the storage space into a plurality of sub-spaces, the sub-spaces being used to install batteries;

[0008] Wherein, a second cooling channel is provided in the lower shell body, the second cooling channel flows through the lower shell body and the partition frame, and is connected with the first cooling channel.

[0009] Optionally, the thermal management component further includes a flange, which is sleeved on the outer periphery of the connecting plug and fixedly connected to the upper shell or the lower shell;

[0010] Optionally, the first sealing structure includes a first sealing ring, and the first sealing ring is clamped between the connecting plug and the first mounting hole;

[0011] Optionally, the second sealing structure includes a second sealing ring, and the second sealing ring is clamped between the connecting plug and the second mounting hole;

[0012] Optionally, the second mounting hole is provided on the partition frame.

[0013] Optionally, the partition frame includes at least one first partition plate arranged along a first direction and at least one second partition plate arranged along a second direction, wherein the first partition plate and the second partition plate intersect to divide the accommodation space into a plurality of subspaces;

[0014] The first direction and the second direction intersect.

[0015] Optionally, the second cooling channel flows through each of the first baffles and each of the second baffles;

[0016] Optionally, the second cooling channel includes a plurality of sub-channels and a bottom plate channel, the bottom plate channel is communicated with the sub-channels, each of the first baffles and each of the second baffles is provided with the sub-channel, and the bottom plate channel is provided in the bottom plate of the lower shell body;

[0017] Optionally, the first direction is perpendicular to the second direction.

[0018] Optionally, the thermal management component further includes a plurality of heating films, at least a portion of each of the heating films is disposed in the subspace, and the heating films are used to cover the batteries in the subspace to heat the batteries.

[0019] Optionally, the heating film includes a first portion, which is annular and located in the subspace, and is used to be sleeved around the periphery of the battery;

[0020] Optionally, the heating film includes a second part, which is located on a side of the upper shell facing the subspace and is used for covering a side of the battery facing the upper shell.

[0021] Optionally, the heating film includes a heating wire, a first silicone layer and a second silicone layer, and the heating wire is sandwiched between the first silicone layer and the silicone layer.

[0022] In a second aspect, the present application provides a battery device, comprising:

[0023] multiple batteries; and

[0024] In the thermal management assembly as described in any one of the above items, each of the batteries is installed in the subspace.

[0025] In a third aspect, the present application provides a thermal management system for a vehicle, comprising:

[0026] The battery device described above includes a battery circuit, wherein a radiator, a first water pump, and a battery passage are sequentially connected in series within the battery circuit, and the battery passage includes the first cooling channel and the second cooling channel;

[0027] An electric drive device, comprising an electric drive circuit, wherein the radiator, the second water pump and the electric drive passage are sequentially connected in series in the electric drive circuit; and

[0028] The valve group is used to control the series connection or parallel connection of the electric drive circuit and the battery circuit.

[0029] Optionally, the thermal management system has an electric drive waste heat recovery mode. In the electric drive waste heat recovery mode, the electric drive circuit is connected in series with the battery circuit through the valve group.

[0030] Optionally, the valve group includes a first stop valve and a second stop valve;

[0031] The inlet of the first stop valve is connected to the outlet of the electric drive passage, and the outlet of the first stop valve is connected to the inlet of the radiator;

[0032] The inlet of the second stop valve is connected to the outlet of the electric drive passage, and the second stop valve is connected to the inlet of the battery passage;

[0033] In the electric drive waste heat recovery mode, the thermal management system stops the first water pump, operates the second water pump, closes the first stop valve, and opens the second stop valve.

[0034] Optionally, the thermal management system further includes a first three-way valve, the first three-way valve having a first inlet and two first outlets, the first inlet being connected to the outlet of the electric drive passage, and the two first outlets being connected to the inlet of the first shut-off valve and the inlet of the second shut-off valve, respectively;

[0035] And / or, the thermal management system further comprises a second three-way valve, the second three-way valve having a second inlet and two second outlets, the second inlet being connected to the outlet of the radiator, and the two second outlets being connected to the inlet of the first water pump and the inlet of the second water pump, respectively;

[0036] And / or, the thermal management system further comprises a third three-way valve, the third three-way valve having two third inlets and one third outlet, the two third inlets being respectively connected to the outlet of the first water pump and the outlet of the first stop valve, and the third outlet being connected to the inlet of the battery passage;

[0037] And / or, the thermal management system also includes a fourth three-way valve, which has two fourth inlets and one fourth outlet, the two fourth inlets are respectively connected to the outlet of the second shut-off valve and the outlet of the battery passage, and the fourth outlet is connected to the inlet of the radiator.

[0038] Optionally, the thermal management system further includes a control module, which is used to obtain the temperature T of the battery device and, when T is lower than a first threshold, control the valve group to switch to the electric drive waste heat recovery mode.

[0039] In a third aspect, the present application provides a vehicle, comprising:

[0040] A thermal management assembly as described in any of the above; or

[0041] A battery device as described above; or

[0042] A thermal management system as described in any one of the above.

[0043] The present application provides a thermal management component, a battery device, a thermal management system, and a vehicle, which have at least the following advantages:

[0044] The first cooling channel in the upper housing and the second cooling channel in the lower housing can simultaneously cool the battery from opposite sides, increasing the heat exchange area between the battery and the second cooling channel, helping to more efficiently remove heat generated by the battery. Furthermore, the second cooling channel also flows through the partition. Because the partition divides the storage space into multiple sub-spaces, this provides more contact surface with the battery within the storage space, increasing the heat exchange area between the second cooling channel and the battery, further improving the battery's heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of an exploded structure of a thermal management assembly shown in one embodiment;

[0046] Figure 2 is a cross-sectional view of the first cooling water channel in the upper shell;

[0047] Figure 3 is a cross-sectional view of the second cold water channel in the lower shell;

[0048] Figure 4 It is a structural diagram of the connection plug;

[0049] Figure 5 It is a structural diagram of the heating film;

[0050] Figure 6 It is the structural block diagram of the thermal management system;

[0051] Figure 7 This is a block diagram of the thermal management system in electric drive waste heat recovery mode;

[0052] Figure 8 It is the structural block diagram of the thermal management system in self-circulation mode.

[0053] Explanation of the reference numerals: 10. upper shell; 11. first cooling channel; 12. first mounting hole; 13. water outlet; 20. lower shell; 21. second cooling channel; 22. lower shell body; 23. partition; 231. first partition; 232. second partition; 24. second mounting hole; 25. water inlet; 31. connecting plug; 32. first sealing ring; 33. second sealing ring; 34. flange; 35. gasket; 40. heating film; 41. first silicone layer; 42. heating wire; 43. second silicone layer; 50. battery; 61. radiator; 62. first water pump; 63. second water pump; 64. electric drive passage; 65. battery passage; 66. first stop valve; 67. second stop valve; 71. first three-way valve; 72. second three-way valve; 73. third three-way valve; 74. fourth three-way valve. DETAILED DESCRIPTION

[0054] The exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all possible embodiments of the present invention; rather, they are merely examples of some of the apparatuses and methods contemplated herein.

[0055] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar expressions used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantitative limitation, but rather indicate the presence of at least one. If only "a" is referred to, this will be separately stated. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper," "top," and "bottom" are used for convenience of description only and are not limited to a single location or spatial orientation. Terms such as "include" or "comprising" mean that the elements or objects listed before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. The words “connected” or “connected” and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0056] The present application provides a thermal management component, a battery device, a thermal management system, and a vehicle. The thermal management component, the battery device, the thermal management system, and the vehicle are described in detail below with reference to the accompanying drawings. The features of the following embodiments and implementations may be combined with each other unless there is a conflict.

[0057] Please refer to Figures 1 to 3 The present invention provides a thermal management assembly comprising an upper housing 10 and a lower housing 20. The lower housing 20 is configured to cover the upper housing 10 to form a closed enclosure. The upper housing 10 and the lower housing 20 may be fixedly connected by bolts, but is not limited thereto. For example, the upper housing 10 and the lower housing 20 may also be snap-fitted.

[0058] The lower shell 20 includes a lower shell body 22 and a partition 23 . The lower shell body 22 has an accommodation space. The partition 23 is disposed in the accommodation space and divides the accommodation space into a plurality of sub-spaces for installing the batteries 50 .

[0059] A first cooling channel 11 is provided in the upper shell 10 , and a second cooling channel 21 is provided in the lower shell 20 . The second cooling channel 21 flows through the lower shell body 22 and the partition frame 23 and is connected to the first cooling channel.

[0060] By adopting this solution, the first cooling channel 11 of the upper housing 10 and the second cooling channel 21 of the lower housing 20 can simultaneously cool the battery 50 from opposite sides, increasing the heat exchange area between the battery 50 and helping to more efficiently remove heat generated by the battery. Furthermore, the second cooling channel 21 also flows through the partition 23. Because the partition 23 divides the storage space into multiple sub-spaces, this provides more contact surface with the battery 50 within the storage space, increasing the heat exchange area between the second cooling channel 21 and the battery 50, thereby further improving the battery's heat dissipation efficiency.

[0061] It should be noted that the cooling medium introduced into the first cooling channel 11 and the second cooling channel 21 can be water, a water-ethylene glycol mixture, a propylene glycol aqueous solution, a refrigerant (such as R134a, R410A), etc., but is not limited thereto. In addition, the specific paths of the first cooling channel 11 and the second cooling channel 21 can be set as needed, and this application does not impose specific restrictions on this. For example, the first cooling channel 11 and the second cooling channel 21 can be serpentine channels, labyrinth channels, etc., but are not limited thereto.

[0062] In addition, when the temperature of the battery 50 is too low, the first cooling channel 11 and the second cooling channel 21 can also heat the battery 50 . The principle is similar to the above cooling principle, so it will not be described in detail.

[0063] In one embodiment, the lower shell body 22 and the partition frame 23 are integrally formed. It is easy to understand that since the second cooling channel 21 flows through the lower shell body 22 and the partition frame 23, there is no connection gap between the integrally formed lower shell body 22 and the partition frame 23, which can effectively prevent leakage of the cooling medium.

[0064] Please refer to Figure 4 In one embodiment, the thermal management component further includes a connecting plug 31 , which is sealedly connected to the upper shell 10 and the lower shell 20 , respectively. One end of the connecting plug 31 is connected to the first cooling channel 11 , and the other end is connected to the second cooling channel 21 .

[0065] Thus, during installation, simply connecting the connector plug 31 to the corresponding positions of the upper and lower housings 20 is sufficient to establish communication between the first cooling channel 11 and the second cooling channel 21, reducing installation time and difficulty. Furthermore, the sealed connection between the connector plug 31 and the upper and lower housings 10, 20, respectively, effectively prevents cooling medium leakage, ensuring the integrity and normal operation of the cooling system.

[0066] Furthermore, the upper shell 10 has a first mounting hole 12, which is connected to the first cooling channel 11. The connecting plug 31 is inserted into the first mounting hole 12, and at least one first sealing structure is provided between the outer periphery of the connecting plug 31 and the inner periphery of the first mounting hole 12.

[0067] The first sealing structure can effectively fill the gap between the outer periphery of the connecting plug 31 and the inner periphery of the first mounting hole 12, forming a reliable sealing barrier to prevent the coolant from leaking from the connection.

[0068] Similarly, the lower housing 20 has a second mounting hole 24, which communicates with the second cooling channel 21. A connecting plug 31 is secured within the second mounting hole 24. At least one second sealing structure is provided between the outer periphery of the connecting plug 31 and the inner periphery of the second mounting hole 24. This second sealing structure effectively fills the gap between the outer periphery of the connecting plug 31 and the inner periphery of the second mounting hole 24, forming a reliable sealing barrier to prevent coolant leakage from the connection.

[0069] The first sealing structure and the second sealing structure may be a sealing adhesive layer, a sealing gasket, a sealing lip, a sealing ring, etc., but are not limited thereto.

[0070] In a specific embodiment, the first sealing structure includes a first sealing ring 32, which is clamped between the connecting plug 31 and the first mounting hole 12. The operation of installing the first sealing ring 32 between the connecting plug 31 and the first mounting hole 12 is relatively simple and does not require complicated tools and processes. This can improve assembly efficiency and reduce production costs during the production of the battery pack. In addition, if the first sealing ring 32 is damaged or the sealing performance deteriorates during use, it is also convenient to replace the first sealing ring 32. It is only necessary to remove the connecting plug 31 from the first mounting hole 12, replace it with a new sealing ring, and then reinstall it. There is no need for large-scale disassembly and repair of the entire connection structure, which reduces maintenance time and cost.

[0071] Similarly, the second sealing structure includes a second sealing ring 33, which is clamped between the connecting plug 31 and the second mounting hole 24. The principle is similar to that of the first sealing ring 32, and will not be described in detail in this application.

[0072] The number of the first sealing ring 32 and the second sealing ring 33 can be 1, 2, 3, 4, etc., but is not limited thereto.

[0073] Furthermore, the second mounting hole 24 can be provided on the partition 23 (see Figure 1 From the perspective of assembly, the second mounting hole 24 provided on the partition 23 provides a clear positioning and mounting interface for the installation operation, eliminating the need to find additional locations on the wall of the lower shell body 22, which makes the installation process simpler and more accurate, and is conducive to improving production efficiency and assembly accuracy.

[0074] Furthermore, the thermal management component also includes a flange 34, which is mounted on the outer periphery of the connecting plug 31 and is fixedly connected to the upper shell 10 or the lower shell 20, that is, the flange 34 can be fixed to the upper shell 10, the lower shell 20, or both the upper shell 10 and the lower shell 20.

[0075] Flange 34 securely connects connector 31 to upper housing 10 or lower housing 20. During use, the battery pack is subject to various external forces, such as vibration and impact. Flange 34 effectively disperses these forces, preventing loosening or separation between connector 31 and the housing, thereby ensuring the stability and reliability of the cooling system.

[0076] Furthermore, a gasket 35 may be clamped between the inner periphery of the flange 34 and the outer periphery of the connecting plug 31 . The gasket 35 increases the friction between the flange 34 and the connecting plug 31 , making the connection more secure.

[0077] In one embodiment, the upper shell 10 is provided with a cooling outlet, the lower shell 20 is provided with a cooling inlet, the first cooling channel has a first inlet and a first outlet, the second cooling channel has a second inlet and a second outlet, the second inlet is connected to the cooling inlet, the second outlet is connected to the first inlet through the connecting plug 31, and the first outlet is connected to the cooling outlet.

[0078] In this way, the cooling medium enters through the cooling inlet of the lower shell 20 and first flows into the second cooling channel. Due to the design of the partition 23 and the lower shell body 22, the coolant can fully contact the battery 50 inside the lower shell 20, removing the heat generated by the battery. The coolant then flows from the second outlet through the connecting plug 31 to the first inlet of the first cooling channel. There, it further contacts the battery in the first cooling channel of the upper shell 10 to dissipate heat, and finally flows out of the cooling outlet. This design allows the coolant to flow in an orderly manner along a predetermined path.

[0079] In one embodiment, the partition frame 23 includes at least one first partition 231 arranged along a first direction and at least one second partition 232 arranged along a second direction, and the first partition 231 and the second partition 232 intersect so that the accommodating space is divided into multiple sub-spaces; wherein the first direction and the second direction intersect.

[0080] The grid structure formed by the intersection of the first partition 231 and the second partition 232 enhances the structural strength of the partition frame 23 itself, while also improving the structural stability of the entire battery pack.

[0081] Furthermore, the second cooling channel 21 flows through each first baffle 231 and each second baffle 232. Specifically, the second cooling channel 21 may include a bottom plate channel and multiple sub-channels. Each first baffle 231 and second baffle 232 may be provided with a sub-channel. The sub-channels in the first baffle 231 may extend along the length and width of the first baffle 231. Similarly, the sub-channels in the second baffle 232 may extend along the length and width of the second baffle 232. The bottom plate of the lower shell body 22 is provided with a bottom plate channel, which is connected to each sub-channel to form the above-mentioned second cooling channel 21, but is not limited thereto.

[0082] Because the first and second partitions 231 and 232 divide the storage space into multiple subspaces for the batteries 50, the cooling channel flows through each partition, allowing the coolant to more fully contact the batteries 50 in each subspace. This significantly increases the contact area between the coolant and the batteries, allowing heat generated by the batteries to be removed more quickly and efficiently, ensuring that each battery in the battery pack is well cooled and preventing local overheating, thereby significantly improving overall heat dissipation efficiency and uniformity.

[0083] Furthermore, the first direction is perpendicular to the second direction. This allows the subspace formed by the intersection of the first separator 231 and the second separator 232 to have a regular shape, such as a rectangle or square. This regular spatial layout facilitates the precise placement of the batteries 50, ensuring their neat and orderly arrangement. Furthermore, the perpendicularly intersecting separators form a grid-like structure, which offers excellent mechanical stability and strength.

[0084] Please refer to Figure 5 In one embodiment, the thermal management component further includes a plurality of heating components, at least a portion of each heating component is disposed in the subspace for heating the battery 50 in the subspace.

[0085] It's easy to understand that in low-temperature environments, battery performance can be significantly affected, such as reduced battery capacity and lower charge and discharge efficiency. The heating assembly can heat the batteries 50 within the subspaces at low temperatures, raising the battery temperature to a suitable operating temperature range. This effectively improves the battery's performance in low-temperature environments, ensuring normal battery charge and discharge, and increasing the range and reliability of electric vehicles and other devices in cold climates. Furthermore, since each subspace is equipped with a heating assembly, it can heat the batteries 50 within each subspace, improving temperature uniformity across multiple batteries 50.

[0086] In one embodiment, the heating assembly includes a heating film 40, which is used to cover the battery. The heating film 40 directly covers the battery, significantly shortening the heat conduction path. When the heating film 40 is energized and generates heat, it can quickly transfer heat to the battery, achieving rapid temperature increase. This is particularly important in low-temperature environments where the battery operating temperature needs to be raised as quickly as possible. It can effectively reduce battery performance loss at low temperatures and enable the battery to enter optimal operating conditions more quickly.

[0087] Furthermore, the heating film 40 includes a first part and a second part. The first part is annular and located in the subspace, and is used to be mounted on the periphery of the battery. The second part is located on the side of the upper shell 10 facing the subspace, and is used to be attached to the side of the battery facing the upper shell 10.

[0088] In this way, the first portion is annularly positioned around the outer periphery of the battery, while the second portion adheres to the side of the battery facing the upper housing 10. This design achieves multi-directional coverage of the battery, increasing the heating area of ​​the heating film 40 on the battery 50. Furthermore, the first portion is located within the subspace, fully utilizing the annular space of the subspace to accommodate the heating film 40 without occupying excessive internal space in the battery pack. The second portion is located on the side of the upper housing 10 facing the subspace, cleverly utilizing the gap between the upper housing 10 and the battery, achieving efficient space utilization and helping to maintain the compactness of the battery pack structure.

[0089] Of course, in some other embodiments, the heating film 40 may include only the first portion or the second portion.

[0090] In a specific embodiment, the heating film 40 includes a heating wire 42 , a first silicone layer 41 and a second silicone layer 43 , and the heating wire 42 is sandwiched between the first silicone layer 41 and the silicone layer.

[0091] Thus, the first silicone layer 41 and the second silicone layer 43 sandwich the heating wire 42, providing excellent insulation. The silicone material itself has excellent insulating properties, effectively preventing electrical shorts between the heating wire 42 and the battery or other components, thus avoiding safety accidents caused by leakage. Furthermore, the silicone layer also protects the heating wire 42 from damage from external forces such as friction and compression, thereby improving the reliability and service life of the heating film 40.

[0092] It should be noted that the power source of the heating film 40 (heating wire 42 ) can be a battery module, that is, the heating film 40 can be connected to the total power of the battery module to obtain electricity, but is not limited thereto.

[0093] In a second aspect, an embodiment of the present application further provides a battery module, comprising the thermal management assembly of any of the above embodiments or implementations and a plurality of batteries 50 , wherein the batteries 50 are housed in the above subspaces.

[0094] Please refer to Figure 6 In a third aspect, an embodiment of the present application further provides a thermal management system, comprising the above-mentioned battery module, electric drive device and valve group.

[0095] The battery module includes a battery circuit, in which a radiator 61 , a first water pump 62 and a battery passage 65 are sequentially connected in series. The battery passage 65 includes the first cooling channel 11 and the second cooling channel 21 mentioned above.

[0096] The electric drive device includes an electric drive circuit, in which a radiator 61, a second water pump 63, and an electric drive passage 64 are sequentially connected in series. The electric drive passage 64 is a cooling passage through the electric drive structure, which can be, but is not limited to, a motor.

[0097] The valve group is used to control the series or parallel connection of the electric drive circuit and the battery circuit.

[0098] As can be seen from the above description, the battery module and electric drive device each have independent temperature regulation circuits (battery circuit and electric drive circuit) and share a heat exchanger, reducing the number of radiators 61 and simplifying the structure of the thermal management system. Furthermore, the valve group can connect the electric drive circuit and the battery circuit in series or parallel as needed. When the system is in different operating conditions, the valve group can flexibly control the series or parallel connection of the two circuits.

[0099] Please refer to Figure 7 In one embodiment, the thermal management system has an electric drive waste heat recovery mode. In the electric drive waste heat recovery mode, the electric drive circuit is connected in series with the battery circuit through a valve group.

[0100] It is easy to understand that a large amount of heat will be generated during the operation of the electric drive structure. If this heat is directly dissipated into the environment through the radiator 61, it is actually a waste of energy. In the electric drive waste heat recovery mode, the electric drive circuit and the battery circuit are connected in series, and the waste heat generated by the electric drive device can be absorbed by the coolant and then transferred to the battery circuit through the coolant. When the battery is in a low temperature state, this waste heat can heat the battery, allowing the battery to quickly reach a suitable operating temperature, reducing the energy consumption of the battery heating component, improving the energy utilization efficiency, and reducing the energy consumption of the entire system.

[0101] Furthermore, the thermal management system also includes a control module, which is used to obtain the temperature T of the battery device. When T is lower than a first threshold, the control valve group is switched to the electric drive waste heat recovery mode.

[0102] The control module acquires the battery unit's temperature, T, in real time and determines whether to activate the electric drive waste heat recovery mode based on a comparison between the temperature and a first threshold. When T falls below the first threshold, indicating a low battery temperature, activating this mode effectively utilizes waste heat generated by the electric drive unit to heat the battery, avoiding unnecessary activation of waste heat recovery when the battery temperature is appropriate. This ensures precise energy utilization, minimizes energy waste, and improves the overall efficiency of the thermal management system.

[0103] It should be noted that different types of batteries have different suitable operating temperatures, so this embodiment does not impose any specific restrictions on the first threshold. However, for ease of understanding, when the battery 50 is a lithium-ion battery or a lead-acid battery, the first threshold can be set within the range of 0-15°C. For example, the first threshold can be 0, 1°C, 2°C, 3°C, 4°C, 5°C, 6°C, 7°C, 8°C, 9°C, 10°C, 11°C, 12°C, 13°C, 14°C, or 15°C.

[0104] Furthermore, the control module is also connected to the heating film 40. When the thermal management system is in the electric drive waste heat recovery mode, the control module is used to control the heating film 40 to stop heating. In the electric drive waste heat recovery mode, the waste heat generated by the electric drive device is collected and used to heat the battery, which can provide enough heat for the battery to reach a suitable operating temperature. If the heating film 40 continues to work at this time, it will cause additional energy consumption. The control module controls the heating film 40 to stop heating in time, which can effectively avoid this waste of energy, improve the energy utilization efficiency of the entire thermal management system, and reduce the energy consumption of the system.

[0105] Furthermore, the control module can also be used to obtain the current vehicle speed. When the heating film 40 is working, the control module is used to determine whether the current vehicle speed is greater than the vehicle speed threshold. If the current vehicle speed is greater than the current threshold, the heating film 40 is controlled to stop working, and the thermal management system is controlled to switch to the electric drive waste heat recovery heating mode to reduce battery energy consumption.

[0106] Among them, the vehicle speed threshold can be 20km / h to 30km / h. For example, the vehicle speed threshold can be 20km / h, 21km / h, 22km / h, 23km / h, 24km / h, 25km / h, 26km / h, 27km / h, 28km / h, 29km / h, and 30km / h.

[0107] In one embodiment, the valve group includes a first stop valve 66 and a second stop valve 67; the inlet of the first stop valve 66 is connected to the outlet of the electric drive passage 64, and the outlet of the first stop valve 66 is connected to the inlet of the radiator 61; the inlet of the second stop valve 67 is connected to the outlet of the electric drive passage 64, and the second stop valve 67 is connected to the inlet of the battery passage 65; when the thermal management system is in the electric drive waste heat recovery mode, the first water pump 62 stops, the second water pump 63 works, the first stop valve 66 is cut off, and the second stop valve 67 is turned on.

[0108] In the electric drive waste heat recovery mode, the second stop valve 67 is turned on, so that the coolant with waste heat generated by the electric drive device (drive structure) can flow directly into the battery passage 65 (including the first cooling channel 11 and the second cooling channel 21). At the same time, the first stop valve 66 is cut off, preventing the coolant with waste heat from flowing to the radiator 61, thereby avoiding the waste heat from being wasted in the radiator 61. In this way, the waste heat of the electric drive device can be utilized to the greatest extent to heat the battery, thereby improving the efficiency of waste heat recovery. In addition, by controlling the first water pump 62 to stop and the second water pump 63 to work, a specific flow path of the coolant in the system is achieved. The first water pump 62 stops working, avoiding its unnecessary energy consumption, and preventing the coolant from generating interfering flow in the battery circuit.

[0109] Furthermore, the thermal management system may also include multiple three-way valves to simplify the piping connections of the thermal management system. Specific details are as follows:

[0110] The thermal management system also includes a first three-way valve 71 , which has a first inlet and two first outlets. The first inlet is connected to the outlet of the electric drive passage 64 , and the two first outlets are respectively connected to the inlet of the first stop valve 66 and the inlet of the second stop valve 67 .

[0111] The thermal management system further includes a second three-way valve 72 having a second inlet and two second outlets. The second inlet is connected to the outlet of the radiator 61 , and the two second outlets are connected to the inlet of the first water pump 62 and the inlet of the second water pump 63 , respectively.

[0112] The thermal management system also includes a third three-way valve 73 , which has two third inlets and one third outlet. The two third inlets are respectively connected to the outlet of the first water pump 62 and the outlet of the first stop valve 66 , and the third outlet is connected to the inlet of the battery passage 65 .

[0113] The thermal management system also includes a fourth three-way valve 74 , which has two fourth inlets and one fourth outlet. The two fourth inlets are connected to the outlet of the second electronic cutoff valve and the outlet of the battery passage 65 respectively, and the fourth outlet is connected to the inlet of the radiator 61 .

[0114] Among them, the specific direction of the coolant is the radiator 61 outlet, the second three-way valve 72, the second water pump 63, the electric drive passage 64, the first three-way valve 71, the first stop valve 66, the third three-way valve 73, the battery passage 65, the fourth three-way valve 74, and the radiator 61 inlet.

[0115] Please refer to Figure 8 In one embodiment, the thermal management system also features a separate circulation mode, in which the battery circuit and the electric drive circuit are connected in parallel. In this mode, the battery circuit and the electric drive circuit are independent of each other, allowing heat dissipation to be performed separately based on their respective actual temperatures, thus preventing interference between the two.

[0116] At this point, the control module can control the first shut-off valve 66 to shut off and the second shut-off valve 67 to close. Within the battery circuit, the coolant flows as follows: radiator 61 outlet, second three-way valve 72, first water pump 62, second three-way valve 72, battery passage 65, fourth three-way valve 74, and radiator 61 inlet. Within the electric drive circuit, the coolant flows as follows: radiator 61 outlet, second three-way valve 72, second water pump 63, electric drive passage 64, first three-way valve 71, second shut-off valve 67, fourth three-way valve 74, and radiator 61 inlet.

[0117] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A thermal management component, characterized in that: include: an upper shell, wherein a first cooling channel is provided in the upper shell; A lower shell, used to cover the upper shell, the lower shell comprising a lower shell body and a partition, the lower shell body having a storage space, the partition being arranged in the storage space to divide the storage space into a plurality of sub-spaces, the sub-spaces being used to install batteries; Wherein, a second cooling channel is provided in the lower shell body, the second cooling channel flows through the lower shell body and the partition frame, and is connected with the first cooling channel.

2. The thermal management assembly according to claim 1, wherein: The thermal management assembly further includes a connection plug; The upper housing has a first mounting hole, the first mounting hole is in communication with the first cooling channel, the connecting plug is inserted into the first mounting hole, and at least one first sealing structure is provided between the outer periphery of the connecting plug and the inner periphery of the first mounting hole; The lower shell has a second mounting hole, which is communicated with the second cooling channel. The connecting plug is fixed in the second mounting hole. At least one second sealing structure is provided between the outer periphery of the connecting plug and the inner periphery of the second mounting hole.

3. The thermal management assembly according to claim 2, wherein: The thermal management assembly further includes a flange, which is sleeved on the outer periphery of the connecting plug and fixedly connected to the upper shell or the lower shell; And / or, the first sealing structure includes a first sealing ring, and the first sealing ring is clamped between the connecting plug and the first mounting hole; And / or, the second sealing structure includes a second sealing ring, and the second sealing ring is clamped between the connecting plug and the second mounting hole; And / or, the second mounting hole is provided on the partition frame.

4. The thermal management assembly according to claim 1, wherein: The partition frame includes at least one first partition plate arranged along a first direction and at least one second partition plate arranged along a second direction, wherein the first partition plate and the second partition plate intersect with each other so that the accommodation space is divided into a plurality of sub-spaces; The first direction and the second direction intersect.

5. The thermal management assembly according to claim 4, wherein: The second cooling channel flows through each of the first baffles and each of the second baffles; and / or, The second cooling channel includes a plurality of sub-channels and a bottom plate channel, the bottom plate channel is connected to the sub-channel, each of the first baffles and each of the second baffles is provided with the sub-channel, and the bottom plate channel is provided in the bottom plate of the lower shell body; and / or, The first direction is perpendicular to the second direction.

6. The thermal management assembly according to any one of claims 1 to 5, characterized in that: The thermal management assembly further includes a plurality of heating films, at least a portion of each of the heating films is disposed in the subspace, and the heating films are used to cover the batteries in the subspace to heat the batteries.

7. The thermal management assembly according to claim 6, wherein: The heating film includes a first portion, which is annular and located in the subspace and is used to be sleeved on the periphery of the battery; And / or, the heating film includes a second portion, which is located on a side of the upper shell facing the subspace and is used for being attached to a side of the battery facing the upper shell.

8. The thermal management assembly according to claim 7, wherein: The heating film comprises a heating wire, a first silicone layer and a second silicone layer, wherein the heating wire is sandwiched between the first silicone layer and the second silicone layer.

9. A battery device, characterized in that: include: Multiple batteries; as well as The thermal management assembly according to any one of claims 1 to 8, wherein each of the batteries is installed in the subspace.

10. A thermal management system, applied to a vehicle, characterized in that: include: The battery device according to claim 9, comprising a battery circuit, wherein a radiator, a first water pump, and a battery passage are sequentially connected in series within the battery circuit, and the battery passage comprises the first cooling channel and the second cooling channel; An electric drive device, comprising an electric drive circuit, wherein the radiator, the second water pump and the electric drive passage are sequentially connected in series in the electric drive circuit; and The valve group is used to control the series connection or parallel connection of the electric drive circuit and the battery circuit.

11. The thermal management system according to claim 10, wherein: The thermal management system has an electric drive waste heat recovery mode. In the electric drive waste heat recovery mode, the electric drive circuit is connected in series with the battery circuit through the valve group.

12. The thermal management system according to claim 11, characterized in that: The valve group includes a first stop valve and a second stop valve; The inlet of the first stop valve is connected to the outlet of the electric drive passage, and the outlet of the first stop valve is connected to the inlet of the radiator; The inlet of the second stop valve is connected to the outlet of the electric drive passage, and the second stop valve is connected to the inlet of the battery passage; In the electric drive waste heat recovery mode, the thermal management system stops the first water pump, operates the second water pump, closes the first stop valve, and opens the second stop valve.

13. The thermal management system according to claim 12, wherein: The thermal management system further includes a first three-way valve having a first inlet and two first outlets, the first inlet being connected to the outlet of the electric drive passage, and the two first outlets being connected to the inlet of the first shut-off valve and the inlet of the second shut-off valve, respectively; And / or, the thermal management system further comprises a second three-way valve, the second three-way valve having a second inlet and two second outlets, the second inlet being connected to the outlet of the radiator, and the two second outlets being connected to the inlet of the first water pump and the inlet of the second water pump, respectively; And / or, the thermal management system further comprises a third three-way valve, the third three-way valve having two third inlets and one third outlet, the two third inlets being respectively connected to the outlet of the first water pump and the outlet of the first stop valve, and the third outlet being connected to the inlet of the battery passage; And / or, the thermal management system also includes a fourth three-way valve, which has two fourth inlets and one fourth outlet, the two fourth inlets are respectively connected to the outlet of the second shut-off valve and the outlet of the battery passage, and the fourth outlet is connected to the inlet of the radiator.

14. The thermal management system according to any one of claims 11 to 13, characterized in that: The thermal management system also includes a control module, which is used to obtain the temperature T of the battery device and, when T is lower than a first threshold, control the switching of the valve group to put the thermal management system into the electric drive waste heat recovery mode.

15. A vehicle, characterized in that: include: The thermal management assembly according to any one of claims 1 to 8; or, The battery device according to claim 9; or A thermal management system as claimed in any one of claims 10 to 14.

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