Battery thermal management system, battery module and automobile

Abstract

The utility model provides a battery thermal management system, a battery module and an automobile, and relates to the technical field of automobile power systems. The battery thermal management system comprises a cold plate which is used for being arranged between adjacent battery cell units of a battery module and is internally provided with a refrigerant channel; the same ends of the cold plates are both provided with the refrigerant liquid inlet pieces and the refrigerant liquid outlet pieces, and the refrigerant liquid inlet pieces and the refrigerant liquid outlet pieces communicate with the two ends of the refrigerant channel correspondingly; and the liquid inlet communicating piece is used for communicating the refrigerant liquid inlet pieces, the liquid outlet communicating piece is used for communicating the refrigerant liquid outlet pieces, and the liquid inlet communicating piece, the liquid outlet communicating piece, the refrigerant liquid inlet pieces and the refrigerant liquid outlet pieces are all located on the same side of the cold plate. According to the battery thermal management system, the battery module and the automobile, the installation space of the battery thermal management system in the horizontal direction is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile power systems, and in particular to a battery thermal management system, a battery module and an automobile. BACKGROUND

[0002] The battery module of an automobile is a key component for storing electrical energy in an electric vehicle or a plug-in hybrid electric vehicle. The battery module is composed of multiple batteries connected in series and parallel to provide the required voltage and capacity.

[0003] The battery module of the related art includes a frame and multiple groups of battery cells, the multiple groups of battery cells are arranged side by side along the width direction of the frame, each group of battery cells includes multiple cylindrical batteries, in order to prevent the cylindrical batteries from overheating and affecting the performance of the batteries during use, the battery module further includes a thermal management system, the thermal management system includes a cold plate, the cold plate is arranged between two adjacent groups of battery cells, the cold plate is internally provided with a refrigerant channel, one end of the cold plate is in communication with the refrigerant channel through an inlet pipe, and the other end of the cold plate is in communication with the refrigerant channel through an outlet pipe, the refrigerant is transported into the refrigerant channel along the inlet pipe, so that the cold plate cools the cylindrical batteries, and the refrigerant after heat exchange with the cylindrical batteries is discharged along the outlet pipe.

[0004] However, by arranging the inlet pipe and the outlet pipe at the two ends of the cold plate, the thermal management system occupies a large installation space in the horizontal direction. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a battery thermal management system, a battery module and an automobile to solve the technical problem of a large installation space occupied by the thermal management system of the related art.

[0006] In a first aspect, the present application provides a thermal management system, comprising:

[0007] a plurality of cold plates, the cold plates are arranged between adjacent battery cells of a battery module, and the cold plates are internally provided with refrigerant channels;

[0008] a refrigerant inlet piece and a refrigerant outlet piece, the same end of the cold plate is provided with the refrigerant inlet piece and the refrigerant outlet piece, and the refrigerant inlet piece and the refrigerant outlet piece are respectively in communication with the two ends of the refrigerant channel;

[0009] an inlet communication piece and an outlet communication piece, the inlet communication piece is used to communicate the refrigerant inlet pieces, and the outlet communication piece is used to communicate the refrigerant outlet pieces, and the inlet communication piece, the outlet communication piece, the refrigerant inlet piece and the refrigerant outlet piece are located on the same side of the cold plate.

[0010] In some embodiments, the cold plate has a first accommodating space and a second accommodating space between one end of the cold plate and the adjacent battery cell unit, respectively, the first accommodating space and the second accommodating space are located on two sides of the cold plate, the refrigerant inlet member is arranged in the first accommodating space, and the refrigerant outlet member is arranged in the second accommodating space.

[0011] In some embodiments, the refrigerant inlet member includes an inlet valve seat and a refrigerant inlet pipe, the inlet valve seat is configured to communicate with one end of the refrigerant channel, the inlet valve seat is arranged at a lower portion of one side of the cold plate, one end of the refrigerant inlet pipe communicates with the inlet valve seat, and the other end of the refrigerant inlet pipe communicates with the inlet communication member, the inlet valve seat and the refrigerant inlet pipe are both located in the first accommodating space.

[0012] In some embodiments, the refrigerant outlet member includes an outlet valve seat and a refrigerant outlet pipe, the outlet valve seat is configured to communicate with the other end of the refrigerant channel, the outlet valve seat is arranged at an upper portion of the other side of the cold plate, one end of the refrigerant outlet pipe communicates with the outlet valve seat, and the other end of the refrigerant outlet pipe communicates with the outlet communication member, the outlet valve seat and the refrigerant outlet pipe are both located in the second accommodating space.

[0013] In some embodiments, the inlet communication member includes an inlet communication pipe, the inlet communication pipe includes a plurality of inlet connecting pipes and a first sealing member, each of the refrigerant inlet members communicates with the inlet connecting pipes, the adjacent inlet connecting pipes are detachably connected, and the first sealing member is arranged between the adjacent inlet connecting pipes to seal the adjacent inlet connecting pipes.

[0014] In some embodiments, the outlet communication member includes an outlet communication pipe, the outlet communication pipe includes a plurality of outlet connecting pipes and a second sealing member, each of the refrigerant outlet members communicates with the outlet connecting pipes, the adjacent outlet connecting pipes are detachably connected, and the second sealing member is arranged between the adjacent outlet connecting pipes to seal the adjacent outlet connecting pipes.

[0015] In some embodiments, a sensor and a mounting member are further included, the sensor is arranged on at least one of the inlet communication member and the outlet communication member, and the mounting member is configured to detachably connect the sensor to at least one of the inlet communication member and the outlet communication member.

[0016] In some embodiments, the mounting member comprises a mounting seat and a third sealing member, the mounting seat is arranged on at least one of the liquid inlet communication member and the liquid outlet communication member, the sensor is detachably connected to the mounting seat through a bolt, and the third sealing member is arranged between the mounting seat and the sensor, and the third sealing member is used for sealing the mounting seat and the sensor.

[0017] In a second aspect, the application provides a battery module comprising a frame and the battery thermal management system arranged in the frame.

[0018] In a third aspect, the application provides an automobile comprising a vehicle body and the battery thermal management system arranged on the vehicle body.

[0019] The application provides a battery thermal management system, a battery module and an automobile. The battery thermal management system provided by the application can reduce the space occupation of the liquid inlet member, the liquid outlet member and the cold plate in the horizontal direction by arranging the liquid inlet member and the liquid outlet member on the same end of the cold plate, so that the liquid inlet member and the liquid outlet member can be installed on the same side of the battery cell unit. The arrangement of the liquid inlet communication member can make the liquid inlet communication member communicate with the plurality of liquid inlet members, so that the liquid inlet communication member does not need to be separately arranged with a liquid pipe for each liquid inlet member, thereby reducing the number of pipe arrangements and simplifying the structure of the thermal management system, so as to further reduce the space occupation of the liquid inlet communication member and the plurality of liquid inlet pipes. The arrangement of the liquid outlet communication member can make the liquid outlet communication member communicate with the plurality of liquid outlet members, so that the liquid outlet communication member does not need to be separately arranged with a liquid pipe for each liquid outlet member, thereby reducing the number of pipe arrangements and simplifying the structure of the thermal management system, so as to further reduce the space occupation of the liquid outlet communication member and the plurality of liquid outlet pipes. The liquid inlet communication member and the liquid outlet communication member are arranged on the same side of the cold plate as the liquid inlet member and the liquid outlet member, so as to facilitate the communication between the liquid inlet member and the liquid inlet communication member, and facilitate the communication between the liquid outlet member and the liquid outlet communication member, thereby further reducing the arrangement length of the liquid inlet member and the liquid outlet member, and further reducing the space occupation of the liquid inlet member and the liquid outlet member. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application.

[0021] Figure 1 The structure schematic diagram of the battery thermal management system provided by the embodiments of the application in cooperation with the battery cell unit;

[0022] Figure 2 The structure schematic diagram of the battery thermal management system provided by the embodiments of the application;

[0023] Figure 3 The structure schematic diagram of the battery thermal management system provided by the embodiments of the application;Figure 2 Partial structural diagram;

[0024] Figure 4 for Figure 2 A partial structural diagram from another angle;

[0025] Figure 5 for Figure 1 Cross-sectional structural diagram of the intercooler plate;

[0026] Figure 6 This is a schematic diagram of the battery module provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Cold plate; 110. First receiving space; 120. Second receiving space; 130. Connecting seat; 140. Refrigerant passage;

[0029] 200. Refrigerant inlet fitting; 210. Inlet valve seat; 220. Refrigerant inlet pipe;

[0030] 300. Refrigerant outlet component; 310. Outlet valve seat; 320. Refrigerant outlet pipe;

[0031] 400. Liquid inlet connector; 410. Liquid inlet connecting pipe; 420. Liquid inlet connecting pipe; 430. First sealing element; 440. Refrigerant inlet pipe;

[0032] 500. Liquid outlet connector; 510. Liquid outlet connecting pipe; 520. Liquid outlet connecting pipe; 530. Second sealing component; 540. Refrigerant outlet pipe;

[0033] 600. Fastener; 610. Fixing plate; 620. Fixing base;

[0034] 700. Sensor; 710. Mounting component; 720. Mounting base; 730. Third seal;

[0035] 800. Battery module; 810. Frame; 820. Cell unit; 830. Upper cell module; 840. Lower cell module; 850. Cylindrical battery;

[0036] 900, connecting ring; 910, buckle.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0039] As described in the background section, the battery module of the related technology includes a frame and multiple sets of battery cells arranged side by side along the width of the frame. Each set of battery cells includes multiple cylindrical batteries. In order to prevent the cylindrical batteries from overheating and affecting battery performance during use, the battery module also includes a thermal management system. The thermal management system includes a cold plate, which is disposed between two adjacent sets of battery cells. A refrigerant channel is provided inside the cold plate. One end of the cold plate is connected to the refrigerant channel via an inlet pipe, and the other end is connected to the refrigerant channel via an outlet pipe. By transporting the refrigerant along the inlet pipe into the refrigerant channel, the cold plate cools the cylindrical batteries. The refrigerant that has exchanged heat with the cylindrical batteries is discharged along the outlet pipe.

[0040] However, by setting the inlet pipe and outlet pipe at opposite ends of the cold plate, with the inlet pipe extending away from the cold plate and the outlet pipe extending away from the inlet pipe, the thermal management system occupies a large installation space in the horizontal direction.

[0041] To address the aforementioned technical problems, this application provides a battery thermal management system, a battery module, and an automobile. By separately arranging the refrigerant inlet pipe and refrigerant outlet pipe on opposite sides of the cold plate, and separately arranging the inlet valve seat and outlet valve seat on opposite sides of the cold plate, each refrigerant inlet pipe can be simultaneously connected to the inlet connecting pipe, and each refrigerant outlet pipe can be simultaneously connected to the outlet connecting pipe. This eliminates the need for separate refrigerant piping on each refrigerant inlet and outlet pipe, reducing the number of refrigerant piping lines in the thermal management system, simplifying its structure, and thus reducing its space occupation. The connecting pipe and the liquid outlet connecting pipe are located on the same side of the cold plate as the refrigerant inlet pipe and the refrigerant outlet pipe. This facilitates the connection of each refrigerant inlet pipe to the inlet connecting pipe and the refrigerant outlet pipe to the outlet connecting pipe, thus shortening the length of the refrigerant inlet pipe and the refrigerant outlet pipe. By placing the refrigerant inlet pipe, refrigerant outlet pipe, inlet connecting pipe and outlet connecting pipe on the same side of the cold plate, the space occupied by the refrigerant inlet pipe, refrigerant outlet pipe, inlet connecting pipe and outlet connecting pipe on the same side of the cold plate is reduced, thereby indirectly reducing the frame area of ​​the battery module and thus reducing the installation space of the battery module.

[0042] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0043] Combination Figures 1 to 6 A battery thermal management system, comprising:

[0044] Cold plate 100, multiple cold plates 100 are provided, cold plates 100 are used to be placed between adjacent cell units 820 of battery module 800, and a refrigerant channel 140 is provided in the cold plate 100.

[0045] A refrigerant inlet 200 and a refrigerant outlet 300 are provided at the same end of the cold plate 100. The refrigerant inlet 200 and the refrigerant outlet 300 are respectively connected to both ends of the refrigerant channel 140.

[0046] The liquid inlet connector 400 and the liquid outlet connector 500 are used to connect the refrigerant inlets 200 and the liquid outlet connector 500 is used to connect the refrigerant outlets 300. The liquid inlet connector 400, the liquid outlet connector 500, the refrigerant inlet 200 and the refrigerant outlet 300 are located on the same side of the cold plate 100.

[0047] In this embodiment, four groups of cell units 820 are provided. Each group of cell units 820 includes an upper cell module 830 and a lower cell module 840. The upper cell module 830 includes multiple cylindrical batteries 850, and the lower cell module 840 includes multiple cylindrical batteries 850. The multiple cylindrical batteries 850 of the upper cell module 830 and the multiple cylindrical batteries 850 of the lower cell module 840 are arranged alternately. Two cold plates 100 are provided, each cold plate 100 corresponding to two groups of cell units 820, and the cold plate 100 is located between the two groups of cell units 820. The axis of the cylindrical battery 850 is perpendicular to the plane where the cold plate 100 is located.

[0048] By adopting the above technical solution, and by setting both the refrigerant inlet 200 and the refrigerant outlet 300 at the same end of the cold plate 100, the refrigerant inlet 200 and the refrigerant outlet 300 can be installed on the same side of the cell unit 820, thereby reducing the space occupied by the refrigerant inlet 200, the refrigerant outlet 300, and the cold plate 100 in the horizontal direction; by using the liquid inlet connector 400, the liquid inlet connector 400 can connect to multiple refrigerant inlets 200, eliminating the need to arrange refrigerant pipes separately for each refrigerant inlet 200, reducing the number of pipes, simplifying the structure of the thermal management system, and thus reducing the space occupied by the liquid inlet connector 400 and multiple refrigerant inlet pipes 220; by using the liquid outlet connector 500, it is possible to This design allows the liquid outlet connector 500 to connect to multiple refrigerant liquid outlets 300, eliminating the need for separate refrigerant piping for each refrigerant liquid outlet 300. This reduces the number of piping connections, simplifies the structure of the thermal management system, and reduces the space occupied by the liquid outlet connector 500 and the multiple refrigerant liquid outlet pipes 320. By placing the liquid inlet connector 400 and the liquid outlet connector 500 on the same side of the cold plate 100 as the refrigerant inlet connector 200 and the refrigerant liquid outlet connector 300, it facilitates connection between the refrigerant inlet connector 200 and the liquid inlet connector 400, and also facilitates connection between the refrigerant liquid outlet connector 300 and the liquid outlet connector 500. This shortens the arrangement length of the refrigerant inlet connector 200 and the refrigerant liquid outlet connector 300, further reducing the space occupied by the refrigerant inlet connector 200 and the refrigerant liquid outlet connector 300.

[0049] In this embodiment, in order to reduce the space occupied by the cold plate 100 in the vertical direction, the width of the cold plate 100 in the vertical direction is equal to or less than the sum of the diameters of the upper cylindrical battery 850 and the lower cylindrical battery 850.

[0050] One end of the cold plate 100 and the adjacent cell unit 820 are respectively provided with a first accommodating space 110 and a second accommodating space 120. The first accommodating space 110 and the second accommodating space 120 are respectively located on both sides of the cold plate 100. The refrigerant inlet 200 and the refrigerant outlet 300 are respectively disposed in the first accommodating space 110 and the second accommodating space 120. In this embodiment, both ends of the cold plate 100 extend beyond the cell unit 820.

[0051] By adopting the above technical solution, by placing the refrigerant inlet 200 in the first accommodating space 110 and the refrigerant outlet 300 in the second accommodating space 120, the refrigerant inlet 200 and the refrigerant outlet 300 can utilize the space between the cold plate 100 and the cell unit 820. The refrigerant inlet 200 and the refrigerant outlet 300 are respectively placed on opposite sides of the cold plate 100, thereby further reducing the space occupied by the refrigerant inlet 200, the refrigerant outlet 300 and the cold plate 100 in the horizontal direction. This allows the frame 810 of the battery module 800 to be set smaller, thereby reducing the space occupied by the entire battery module 800.

[0052] The refrigerant inlet component 200 includes an inlet valve seat 210 and a refrigerant inlet pipe 220. The inlet valve seat 210 is used to communicate with one end of the refrigerant channel 140. The inlet valve seat 210 is located at the lower part of one side of the cold plate 100. One end of the refrigerant inlet pipe 220 is connected to the inlet valve seat 210, and the other end is connected to the inlet connector 400. Both the inlet valve seat 210 and the refrigerant inlet pipe 220 are located within the first accommodating space 110.

[0053] In this embodiment, a connecting seat 130 is welded to one side of the cold plate 100 and at the location of the liquid inlet valve seat 210. The liquid inlet valve seat 210 is detachably connected to the connecting seat 130 by bolts. The liquid inlet valve seat 210 has a liquid inlet channel. One end of the liquid inlet channel is connected to the liquid inlet end of the refrigerant channel 140, and the other end of the liquid inlet channel is connected to one end of the refrigerant inlet pipe 220.

[0054] By adopting the above technical solution, and by setting up the inlet valve seat 210 and the refrigerant inlet pipe 220, it is convenient for the refrigerant inlet pipe 220 to connect with the refrigerant channel 140 in the cold plate 100 through the inlet valve seat 210. Furthermore, the setting up of the inlet valve seat 210 improves the fixing strength of the refrigerant inlet pipe 220, preventing the refrigerant inlet pipe 220 from detaching from the cold plate 100 when the vehicle vibrates. By setting up both the inlet valve seat 210 and the refrigerant inlet pipe 220 within the first accommodating space 110, the space occupied by the inlet valve seat 210 and the refrigerant inlet pipe 220 is reduced. The setting up of the inlet valve seat 210 and the refrigerant inlet pipe 220 facilitates installation and indirectly improves installation efficiency.

[0055] The refrigerant outlet component 300 includes an outlet valve seat 310 and a refrigerant outlet pipe 320. The outlet valve seat 310 is used to communicate with the other end of the refrigerant channel 140. The outlet valve seat 310 is located on the upper part of the other side of the cold plate 100. One end of the refrigerant outlet pipe 320 is connected to the outlet valve seat 310, and the other end is connected to the outlet connector 500. Both the outlet valve seat 310 and the refrigerant outlet pipe 320 are located in the second accommodating space 120.

[0056] In this embodiment, a connecting seat 130 is welded to the other side of the cold plate 100 and at the location of the liquid outlet valve seat 310. The liquid outlet valve seat 310 is detachably connected to the connecting seat 130 by bolts. The liquid outlet valve seat 310 has a liquid outlet channel. One end of the liquid outlet channel is connected to the liquid outlet end of the refrigerant channel 140, and the other end of the liquid outlet channel is connected to one end of the refrigerant liquid outlet pipe 320.

[0057] By adopting the above technical solution, and by setting up the liquid outlet valve seat 310 and the refrigerant liquid outlet pipe 320, it is convenient for the refrigerant liquid outlet pipe 320 to connect with the refrigerant channel 140 in the cold plate 100 through the liquid outlet valve seat 310. Furthermore, the setting up of the liquid outlet valve seat 310 improves the fixing strength of the refrigerant liquid outlet pipe 320, preventing the refrigerant liquid outlet pipe 320 from detaching from the cold plate 100 when the vehicle vibrates. By setting up both the liquid outlet valve seat 310 and the refrigerant liquid outlet pipe 320 in the second accommodating space 120, the space occupied by the liquid outlet valve seat 310 and the refrigerant liquid outlet pipe 320 is reduced. The setting up of the liquid outlet valve seat 310 and the refrigerant liquid outlet pipe 320 facilitates installation and indirectly improves installation efficiency.

[0058] By setting the inlet valve seat 210 and the outlet valve seat 310 at the lower and upper parts of the cold plate 100 respectively, the inlet valve seat 210 and the outlet valve seat 310 utilize the space of the upper and lower parts of the cold plate 100, thereby further reducing the space occupied by the inlet valve seat 210 and the outlet valve seat 310.

[0059] When the refrigerant flows within the refrigerant channel 140, it can enter from the lower part of the cold plate 100 and exit from the upper part, preventing mutual interference between the refrigerant channels 140 inside the cold plate 100 and indirectly improving the cooling efficiency of the battery cell unit 820. The liquid inlet connector 400 includes a liquid inlet connector 410, which includes multiple liquid inlet connecting pipes 420 and a first sealing element 430. Each refrigerant inlet 200 is connected to the liquid inlet connecting pipe 420. Adjacent liquid inlet connecting pipes 420 are detachably connected, and a first sealing element 430 is provided between adjacent liquid inlet connecting pipes 420 to seal the adjacent liquid inlet connecting pipes 420.

[0060] In this embodiment, two refrigerant inlet pipes 220 are provided. One refrigerant inlet pipe 220 is connected to the outlet connecting pipe 510 through a three-way valve, and the other refrigerant inlet pipe 220 is directly connected to the end of the outlet connecting pipe 510. The ends of the refrigerant inlet pipe 220 and the outlet connecting pipe 510 are threaded together and sealed by the first sealing element 430. The shape of the refrigerant inlet pipe 220 can be adjusted as needed. For example, the refrigerant inlet pipe 220 can be set to an arc shape to facilitate the flow of refrigerant in the refrigerant inlet pipe 220. The diameters of the multiple inlet connecting pipes 420 are different, which facilitates the connection of adjacent inlet connecting pipes 420.

[0061] In this embodiment, adjacent liquid inlet connection pipes 420 can be connected by flange, quick coupling, threaded connection or sleeve. The first sealing element 430 can be a bellows sleeved on the adjacent liquid inlet connection pipes 420. The sealing of the adjacent liquid inlet connection pipes 420 is achieved by arranging sealing material such as sealing ring inside the bellows; or an elastic bellows can be used to achieve the sealing of the adjacent liquid inlet connection pipes 420 by utilizing the elasticity of the bellows.

[0062] By adopting the above technical solution, the structure of the liquid inlet connecting pipe 410 is simple, making it easy to directly connect and fix the refrigerant inlet pipe 220 to the liquid inlet connecting pipe 410; by using multiple liquid inlet connecting pipes 420 and detachably connecting adjacent liquid inlet connecting pipes 420, it is easy to adjust the length of the liquid inlet connecting pipes 420, so that different lengths of liquid inlet connecting pipes 420 can be used for different numbers of battery cells 820, thus improving the applicability of the liquid inlet connecting component 400; by adopting the first sealing element 430, it is easy to seal between adjacent liquid inlet connecting pipes 420, preventing refrigerant leakage along the gap between adjacent liquid inlet connecting pipes 420.

[0063] The liquid outlet connector 500 includes a liquid outlet connecting pipe 510, which includes multiple liquid outlet connecting pipes 520 and a second sealing element 530. Each refrigerant liquid outlet 300 is connected to the liquid outlet connecting pipe 520. Adjacent liquid outlet connecting pipes 520 are detachably connected. A second sealing element 530 is provided between adjacent liquid outlet connecting pipes 520. The second sealing element 530 is used to seal the adjacent liquid outlet connecting pipes 520.

[0064] In this embodiment, two refrigerant outlet pipes 320 are provided. One refrigerant outlet pipe 320 is connected to the middle of the outlet connecting pipe 510 through a valve body, and the other refrigerant outlet pipe 320 is threadedly connected to the end of the outlet connecting pipe 510 and sealed by the second sealing member 530. The shape of the refrigerant outlet pipe 320 can be adjusted as needed, for example, the refrigerant outlet pipe 320 can be set as an arc or "L" shape, so as to facilitate the flow of refrigerant in the refrigerant outlet pipe 320. The diameters of the multiple outlet connecting pipes 520 are different, so as to facilitate the connection of adjacent outlet connecting pipes 520.

[0065] In this embodiment, adjacent liquid outlet connection pipes 520 can be connected by flange, quick coupling, threaded connection or sleeve. The second sealing element 530 can be a bellows sleeved on the adjacent liquid outlet connection pipes 520. The sealing of the adjacent liquid outlet connection pipes 520 is achieved by arranging sealing material such as sealing ring inside the bellows; or an elastic bellows can be used to achieve the sealing of the adjacent liquid outlet connection pipes 520 by utilizing the elasticity of the bellows.

[0066] By adopting the above technical solution, the structure of the liquid outlet connecting pipe 510 is simple, making it easy to directly connect and fix the refrigerant liquid outlet pipe 320 to the liquid outlet connecting pipe 510; by using multiple liquid outlet connecting pipes 520 and detachably connecting adjacent liquid outlet connecting pipes 520, it is easy to adjust the length of the liquid outlet connecting pipes 520, so that different lengths of liquid outlet connecting pipes 520 can be used for different numbers of battery cell units 820, thus improving the applicability of the liquid outlet connecting component 500; by adopting the second sealing component 530, it is easy to seal between adjacent liquid outlet connecting pipes 520, preventing refrigerant leakage along the gap between adjacent liquid outlet connecting pipes 520.

[0067] In this embodiment, the liquid inlet connecting pipe 410 is located below the liquid outlet connecting pipe 510. The liquid inlet connecting pipe 410 and the liquid outlet connecting pipe 510 are arranged opposite to each other. Both the liquid inlet connecting pipe 410 and the liquid outlet connecting pipe 510 are arranged in an "L" shape. Parts of the "L"-shaped liquid inlet connecting pipe 410 and the liquid outlet connecting pipe 510 extend toward one side of the battery cell unit 820.

[0068] The battery thermal management system also includes a fixing component 600, which includes a fixing plate 610 and a fixing seat 620. The fixing plate 610 is fixedly installed inside the frame 810 of the battery module 800, and the fixing seat 620 is fixed to the fixing plate 610 by bolts, thereby detachably connecting the fixing seat 620 to the frame 810. The liquid inlet connector 400 also includes a refrigerant inlet pipe 440, and the liquid outlet connector 500 also includes a refrigerant outlet pipe 540. One end of the refrigerant inlet pipe 440 passes through and is fixedly connected to the fixing seat 620, and the other end is threadedly connected to the liquid inlet connector 410 and sealed by a first sealing element 430. One end of the refrigerant outlet pipe 540 passes through and is fixedly connected to the fixing seat 620, and the other end is threadedly connected to the liquid outlet connector 510 and sealed by a second sealing element 530.

[0069] The battery thermal management system also includes a sensor 700 and a mounting component 710. The sensor 700 is disposed on at least one of the liquid inlet connector 400 and the liquid outlet connector 500, and the mounting component 710 is used to detachably connect the sensor 700 to at least one of the liquid inlet connector 400 and the liquid outlet connector 500.

[0070] In this embodiment, sensor 700 is configured to detect temperature. In other embodiments, sensor 700 may also be configured to detect refrigerant flow rate, or to detect leaks, etc. In this embodiment, one sensor 700 is provided, and sensor 700 is provided on the refrigerant inlet pipe 440 of the liquid inlet connector 400. In other embodiments, the number of sensors 700 can be adjusted as needed, for example, sensors 700 can be provided at different positions on the liquid inlet connector 410 and the liquid outlet connector 510.

[0071] By adopting the above technical solution and by setting up the sensor 700, it is convenient to detect the temperature or other characteristic factors in the liquid inlet pipe 410 and the liquid outlet pipe 510, thereby facilitating timely adjustment of the refrigerant flow rate and indirectly improving the cooling efficiency of the cold plate 100 on the battery cell unit 820. By detachably connecting the sensor 700 to the liquid inlet pipe 410 and the liquid outlet pipe 510, it is convenient to install and remove the sensor 700, and to replace the sensor 700 when it is damaged.

[0072] Mounting component 710 includes mounting base 720 and third seal 730. Mounting base 720 is disposed on at least one of liquid inlet connector 400 and liquid outlet connector 500. Sensor 700 is detachably connected to mounting base 720 by bolts. Third seal 730 is disposed between mounting base 720 and sensor 700 and is used to seal mounting base 720 and sensor 700. In this embodiment, third seal 730 includes rubber sealing ring disposed between mounting base 720 and sensor 700.

[0073] By adopting the above technical solution, the mounting base 720 facilitates the positioning of the sensor 700; by detachably connecting the sensor 700 to the mounting base 720 with bolts, the fixing strength of the sensor 700 to the mounting base 720 is improved, preventing the sensor 700 from detaching from the mounting base 720; by adopting the third sealing element 730, the mounting base 720 and the sensor 700 are sealed, preventing water or other impurities from entering the sensor 700 and affecting its use, thus indirectly extending the service life of the sensor 700.

[0074] In this embodiment, multiple connecting rings 900 are fitted on both the inlet connecting pipe 410 and the outlet connecting pipe 510. Each connecting ring 900 is equipped with a buckle 910, which is configured to engage or disengage with a through hole on the frame 810 to fix or disengage the inlet connecting pipe 410 and the outlet connecting pipe 510. By using the connecting rings 900 and the buckles 910, the inlet connecting pipe 410 and the outlet connecting pipe 510 are fixed inside the frame 810 to prevent them from shaking.

[0075] This application also provides a battery module, including a frame 810 and a battery thermal management system of any of the above embodiments disposed within the frame 810.

[0076] The specific structure of the battery thermal management system has been described in detail in the above embodiments, and will not be repeated here.

[0077] This application also provides an automobile, including a vehicle body and a battery thermal management system of any of the above embodiments disposed on the vehicle body.

[0078] The specific structure of the battery thermal management system has been described in detail in the above embodiments, and will not be repeated here.

[0079] The vehicle provided in this application embodiment, by setting up a battery thermal management system, has refrigerant inlet pipes 220 and 320 respectively located on opposite sides of the cold plate 100, and inlet valve seats 210 and outlet valve seats 310 respectively located on opposite sides of the cold plate 100. Each refrigerant inlet pipe 220 can be simultaneously connected to the inlet connecting pipe 410, and each refrigerant outlet pipe 320 can be simultaneously connected to the outlet connecting pipe 510. This eliminates the need for separate refrigerant lines on each refrigerant inlet pipe 220 and each refrigerant outlet pipe 320, reducing the number of refrigerant lines in the thermal management system, simplifying its structure, and thus reducing its space occupation. Furthermore, connecting the inlet connecting pipe 410 and the outlet connecting pipe 510 to the refrigerant inlet pipe... The refrigerant inlet pipe 220 and the refrigerant outlet pipe 320 are located on the same side of the cold plate 100, which facilitates the connection of each refrigerant inlet pipe 220 to the inlet connecting pipe 410 and the connection of each refrigerant outlet pipe 320 to the outlet connecting pipe 510. This shortens the length of the refrigerant inlet pipe 220 and the refrigerant outlet pipe 320. By setting the refrigerant inlet pipe 220, the refrigerant outlet pipe 320, the inlet connecting pipe 410 and the outlet connecting pipe 510 on the same side of the cold plate 100, the space occupied by the refrigerant inlet pipe 220, the refrigerant outlet pipe 320, the inlet connecting pipe 410 and the outlet connecting pipe 510 in the horizontal direction is reduced by utilizing the space on the same side of the cold plate 100. This indirectly reduces the area of ​​the frame 810 of the battery module 800, thereby reducing the installation space of the battery module 800.

[0080] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0081] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery thermal management system, characterized in that, include: A cold plate (100) is provided in multiple ways. The cold plate (100) is used to be disposed between adjacent cell units (820) of the battery module (800). A refrigerant channel (140) is provided in the cold plate (100). A refrigerant inlet (200) and a refrigerant outlet (300) are provided at the same end of the cold plate (100), and the refrigerant inlet (200) and the refrigerant outlet (300) are respectively connected to both ends of the refrigerant channel (140); The liquid inlet connector (400) and the liquid outlet connector (500) are provided. The liquid inlet connector (400) is used to connect each of the refrigerant inlet connectors (200), and the liquid outlet connector (500) is used to connect each of the refrigerant outlet connectors (300). The liquid inlet connector (400), the liquid outlet connector (500), the refrigerant inlet connector (200), and the refrigerant outlet connector (300) are all located on the same side of the cold plate (100).

2. The battery thermal management system according to claim 1, characterized in that, One end of the cold plate (100) and the adjacent battery cell (820) have a first accommodating space (110) and a second accommodating space (120), respectively. The first accommodating space (110) and the second accommodating space (120) are located on both sides of the cold plate (100). The refrigerant inlet (200) is disposed in the first accommodating space (110), and the refrigerant outlet (300) is disposed in the second accommodating space (120).

3. The battery thermal management system according to claim 2, characterized in that, The refrigerant inlet component (200) includes an inlet valve seat (210) and a refrigerant inlet pipe (220). The inlet valve seat (210) is used to communicate with one end of the refrigerant channel (140). The inlet valve seat (210) is located on the lower part of one side of the cold plate (100). One end of the refrigerant inlet pipe (220) is connected to the inlet valve seat (210), and the other end of the refrigerant inlet pipe (220) is connected to the inlet connector (400). The inlet valve seat (210) and the refrigerant inlet pipe (220) are both located in the first accommodating space (110).

4. The battery thermal management system according to claim 2, characterized in that, The refrigerant outlet component (300) includes an outlet valve seat (310) and a refrigerant outlet pipe (320). The outlet valve seat (310) is used to communicate with the other end of the refrigerant channel (140). The outlet valve seat (310) is located on the upper part of the other side of the cold plate (100). One end of the refrigerant outlet pipe (320) is connected to the outlet valve seat (310), and the other end of the refrigerant outlet pipe (320) is connected to the outlet connector (500). The outlet valve seat (310) and the refrigerant outlet pipe (320) are both located in the second accommodating space (120).

5. The battery thermal management system according to any one of claims 1-4, characterized in that, The liquid inlet connector (400) includes a liquid inlet pipe (410), which includes multiple liquid inlet connecting pipes (420) and a first sealing element (430). Each of the refrigerant inlet components (200) is connected to the liquid inlet connecting pipe (420). Adjacent liquid inlet connecting pipes (420) are detachably connected. A first sealing element (430) is provided between adjacent liquid inlet connecting pipes (420), which is used to seal the adjacent liquid inlet connecting pipes (420).

6. The battery thermal management system according to any one of claims 1-4, characterized in that, The liquid outlet connector (500) includes a liquid outlet connecting pipe (510), which includes multiple liquid outlet connecting pipes (520) and a second sealing member (530). Each of the refrigerant liquid outlet components (300) is connected to the liquid outlet connecting pipe (520). Adjacent liquid outlet connecting pipes (520) are detachably connected. A second sealing member (530) is provided between adjacent liquid outlet connecting pipes (520), and the second sealing member (530) is used to seal the adjacent liquid outlet connecting pipes (520).

7. The battery thermal management system according to any one of claims 1-4, characterized in that, It also includes a sensor (700) and a mounting member (710), wherein the sensor (700) is disposed on at least one of the liquid inlet connector (400) and the liquid outlet connector (500), and the mounting member (710) is used to detachably connect the sensor (700) to at least one of the liquid inlet connector (400) and the liquid outlet connector (500).

8. The battery thermal management system according to claim 7, characterized in that, The mounting component (710) includes a mounting base (720) and a third seal (730). The mounting base (720) is disposed on at least one of the liquid inlet connector (400) and the liquid outlet connector (500). The sensor (700) is detachably connected to the mounting base (720) by bolts. The third seal (730) is disposed between the mounting base (720) and the sensor (700) and is used to seal the mounting base (720) and the sensor (700).

9. A battery module, characterized in that, It includes a frame (810) and a battery thermal management system as described in any one of claims 1-8 disposed within the frame (810).

10. A car, characterized in that, It includes a vehicle body and a battery thermal management system as described in any one of claims 1-8, which is disposed on the vehicle body.

Images