Heating equipment, battery pack and vehicle

Abstract

The present application relates to the field of battery heating technology, and provides a heating device, a battery pack and a vehicle. According to the heating device provided by the present application, the heating device includes a heat exchange block and a liquid supply pipe that can be separated and combined. Under this structure, when it is necessary to inspect and repair it, the heat exchange path in the heat exchange block can be freely removed according to needs, without considering the circulation problem of the heat exchange medium in the entire battery pack and removing all heat pipes when the circulation is stopped, thereby eliminating the need to completely disassemble the heat exchange components inside the entire battery pack, which greatly simplifies the maintenance process, making maintenance simpler and more convenient.

Description

Technical Field

[0001] The present application relates to the field of battery heating technology, and in particular to a heating device, a battery pack and a vehicle. Background Art

[0002] The battery life of energy storage power batteries will be greatly reduced when used in a low-temperature environment. At this time, in order to ensure that the battery can be used normally, heating equipment is generally used to heat the battery to ensure that it can work normally.

[0003] At present, most conventional heating equipment uses heating pipes to heat batteries. The heating pipes are mainly installed in a spiral inside the battery pack and close to the battery surface. When in use, a hot fluid is introduced into the pipe to heat the battery. The structure is very simple, and in a high temperature environment, low-temperature fluid can also be introduced to cool the battery to prevent spontaneous combustion. The functions are very rich.

[0004] However, the heating pipeline is directly fixed inside the battery pack. Under this structure, when the heating pipeline is damaged, the heating pipeline inside the entire battery pack needs to be completely removed for repair, which is undoubtedly very cumbersome and greatly increases the difficulty of repair. Summary of the invention

[0005] In view of this, the present application provides a heating device, a battery pack and a vehicle, the purpose of which is to solve the above technical problems to a certain extent.

[0006] A first aspect of the present application provides a heating device, the heating device comprising:

[0007] A heat exchange block, wherein the heat exchange block is arranged between adjacent single cells;

[0008] A heat exchange path, the heat exchange path is arranged inside the heat exchange block, the heat exchange path is used to circulate a heat exchange medium, and the heat exchange path has a medium inlet and a medium outlet;

[0009] A connecting pipe and a butt pipe, wherein the butt pipe is detachably connected to the connecting pipe to connect the connecting pipe and the medium inlet, and the butt pipe is separated from the connecting pipe to separate the medium inlet and the connecting pipe;

[0010] A reversing assembly, the reversing assembly is disposed in the connecting pipe and communicated with the connecting pipe;

[0011] a liquid supply pipe, the liquid supply pipe being used to provide a heat exchange medium, the reversing assembly being configured to be inserted into the liquid supply pipe when the butt pipe is detachably connected to the connecting pipe, so as to provide the heat exchange medium to the medium inlet;

[0012] Wherein, when the butt joint pipe is separated from the connecting pipe, the connecting pipe is configured to move toward the side where the butt joint pipe is located and to be separated from the liquid supply pipe so as to stop supplying the heat exchange medium to the medium inlet.

[0013] On the basis of the above technical solution, optionally, the docking tube rotates to separate from the connecting tube, and the heating device also includes a transmission column driving the docking tube to rotate, the transmission column and the docking tube are arranged side by side, the outer side of the heat exchange block has a recess, and the end of the transmission column is located in the recess.

[0014] Based on any of the above technical solutions, optionally, the heating device also includes a locking sleeve, which is sleeved on the outside of the transmission column, and the locking sleeve can also move along the axial direction of the transmission column to expose the end of the transmission column located in the recess.

[0015] Based on any of the above technical solutions, optionally, the heating device also includes an energy storage component, which is arranged inside the heat exchange block, and the energy storage component is connected to the transmission column. When the transmission column rotates to separate the docking pipe from the connecting pipe, the energy storage component stores energy to apply a reset force to the transmission column.

[0016] On the basis of any of the above technical solutions, optionally, the heat exchange block has a chamber for accommodating the connecting pipe, the chamber intersects with the liquid supply pipe, the reversing assembly includes a reversing head, the reversing head includes a first part extending in the same direction as the liquid supply pipe, and the reversing head also includes a second part extending in the same direction as the chamber;

[0017] The reversing head is configured to move toward the side where the butt joint pipe is located so as to enter the chamber, and the first part seals the communication position between the chamber and the liquid supply pipe.

[0018] Based on any of the above technical solutions, optionally, the heating device further comprises a bonding plate, the bonding plate is bonded to the side of the heat exchange block facing the single cell, and the bonding plate is bonded to both the heat exchange block and the single cell.

[0019] Based on any of the above technical solutions, optionally, the heat exchange block includes at least two parts that are detachably connected to each other, and each of the at least two parts has a part of the heat exchange path.

[0020] Based on any of the above technical solutions, optionally, the heating device has a plurality of the heat exchange blocks, and the liquid supply pipe extends in a winding manner to flow through each of the heat exchange blocks in sequence.

[0021] A second aspect of the present application provides a battery pack, which includes the heating device as described above.

[0022] A third aspect of the present application provides a vehicle, comprising a battery pack as described above.

[0023] According to the heating device provided in the present application, the heating device includes a heat exchange block and a liquid supply pipe that can be separated and combined. Under this structure, when it is necessary to inspect and repair it, the heat exchange path in the heat exchange block can be freely removed according to needs, without considering the circulation problem of the heat exchange medium in the entire battery pack and removing all heat pipes when the circulation is stopped, thereby eliminating the need to completely disassemble the heat exchange components inside the entire battery pack, which greatly simplifies the maintenance process, making maintenance simpler and more convenient.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a three-dimensional diagram of a battery pack provided according to an embodiment of the present application is shown.

[0026] Figure 2 A schematic diagram of an exploded view of a battery pack provided according to an embodiment of the present application is shown.

[0027] Figure 3 Shows Figure 2 Schematic diagram of the enlarged view at A in the middle.

[0028] Figure 4 A schematic diagram showing the structure of a heating device in a battery pack provided according to an embodiment of the present application is shown.

[0029] Figure 5 Shows Figure 4 Schematic diagram of the enlarged view at B in the figure.

[0030] Figure 6 Shows Figure 5 Schematic diagram of the enlarged view at C in the middle.

[0031] Figure 7 Shows Figure 5 Schematic diagram of the enlarged view at D in the middle.

[0032] Reference numerals:

[0033] 1-liquid supply pipe; 2-connecting pipe; 3-heat exchange pipe; 4-bonding plate; 5-heat exchange block; 6-butt pipe; 7-alignment hole; 8-gear column; 9-gear plate; 10-driving rod; 11-transmission column; 12-first cavity; 13-counterbore; 14-first sleeve; 15-transmission sleeve; 16-spring; 17-limiting column; 18-second sleeve; 19-second cavity; 20-fixed ring; 21-movable ring; 22-first return spring; 23-reversing head; 24-interlocking pipe; 25-fixed retaining ring; 26-movable retaining ring; 27-second return spring; 28-sealing ring. DETAILED DESCRIPTION

[0034] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] According to a first aspect of an embodiment of the present application, a heating device is provided. Figures 1 to 7 Describe the structure and working principle of the heating equipment in detail.

[0039] According to the heating device provided in the embodiment of the present application, the heating device includes a heat exchange block, a heat exchange path, a connecting pipe, a reversing assembly, a docking pipe and a liquid supply pipe.

[0040] In the embodiment, the heat exchange block is arranged between adjacent single cells, the heat exchange path is arranged inside the heat exchange block, the heat exchange path is used to circulate the heat exchange medium, and the heat exchange path has a medium inlet and a medium outlet. The reversing assembly is arranged in the connecting pipe and communicated with the connecting pipe.

[0041] In an embodiment, the butt-joint pipe is detachably connected to the connecting pipe to connect the connecting pipe and the medium inlet, and the butt-joint pipe is separated from the connecting pipe to separate the medium inlet and the connecting pipe. In an embodiment, the liquid supply pipe is used to provide heat exchange medium, and the reversing assembly is configured to be inserted into the liquid supply pipe when the butt-joint pipe is detachably connected to the connecting pipe to provide heat exchange medium to the medium inlet.

[0042] In an embodiment, when the butt-joint pipe is separated from the connecting pipe, the reversing assembly is configured to move toward the side where the butt-joint pipe is located and disengage from the liquid supply pipe to stop supplying the heat exchange medium to the medium inlet.

[0043] Thus, according to the heating device provided in the embodiment of the present application, the heating device includes a heat exchange block and a liquid supply pipe that can be separated and combined. Under this structure, when it needs to be repaired, the heat exchange path in the heat exchange block can be freely removed as needed, without considering the circulation problem of the heat exchange medium in the entire battery pack and removing all the heat pipes when the circulation is stopped, thereby eliminating the need to completely disassemble the heat exchange components inside the entire battery pack, which greatly simplifies the maintenance process, making maintenance simpler and more convenient.

[0044] According to the heating device provided in the embodiment of the present application, the docking tube can be rotated to separate from the connecting tube. The heating device can also include a transmission column that drives the docking tube to rotate. The transmission column can be arranged side by side with the docking tube. The outer side of the heat exchange block can have a recess, and the end of the transmission column is located in the recess to protect the transmission column and prevent the transmission column from being accidentally touched. In addition, the space occupied by the transmission column can be reduced.

[0045] According to the heating device provided in the embodiment of the present application, the heating device may further include a locking sleeve, which may be sleeved on the outside of the transmission column, and the locking sleeve may also be able to move axially along the transmission column to expose the end of the transmission column located in the recess.

[0046] In an embodiment, the outer portion of the locking sleeve may be, for example, cylindrical, and the transmission column may be, for example, prismatic, so that when the locking sleeve is located on the outer side of the end of the transmission portion, it is almost impossible to directly twist the locking sleeve to cause the transmission column to rotate; however, when the locking sleeve is lowered to expose the transmission column, due to the prismatic shape of the transmission column, the transmission column can be installed and rotated by a wrench with a matching shape.

[0047] According to the heating device provided in the embodiment of the present application, the heating device may further include an energy storage component, which may be disposed inside the heat exchange block, and which may be connected to the transmission column, and the transmission column may rotate so that when the docking tube is separated from the connecting tube, the energy storage component stores energy to apply a reset force to the transmission column. In an embodiment, the energy storage component provides energy, such as elastic potential energy, for resetting the transmission column, and as an example, the energy storage component may be, for example, a spring.

[0048] According to the heating device provided in the embodiment of the present application, the heat exchange block may have a chamber for accommodating the connecting pipe, the chamber intersects with the liquid supply pipe, the reversing assembly includes a reversing head, the reversing head includes a first part extending in the same direction as the liquid supply pipe, and the reversing head also includes a second part extending in the same direction as the chamber. In the embodiment, the reversing assembly is configured to move toward the side where the butt joint pipe is located to enter the chamber, and the first part seals the connection position between the chamber and the liquid supply pipe.

[0049] According to the heating device provided in the embodiment of the present application, the heating device may further include a bonding plate, which is bonded to the side of the heat exchange block facing the single battery, and the bonding plate is bonded to both the heat exchange block and the single battery.

[0050] According to the heating device provided in the embodiment of the present application, the heat exchange block may include at least two parts that are detachably connected to each other, and each of the at least two parts has a part of the heat exchange path. For example, the heat exchange block can be divided into two parts along a direction perpendicular to the surface with the largest surface area of ​​the heat exchange block.

[0051] According to the heating device provided in the embodiment of the present application, the heating device may have a plurality of heat exchange blocks, and the liquid supply pipe may extend in a winding manner to flow through each heat exchange block in sequence.

[0052] Based on the technical features described above, a specific example of the heating device provided according to an embodiment of the present application will be further described below.

[0053] In the embodiment, the liquid supply pipe 1 is fixedly installed at the bottom of the power battery pack and is arranged in a spiral shape, and the water inlet and outlet ends of the liquid supply pipe 1 extend to the outside of the power battery pack. There are a number of connecting pipes 2, which are evenly installed on the surface of the liquid supply pipe 1, and the connecting pipe 2 is connected to the inside of the liquid supply pipe 1. The heat exchange part is installed in the power battery pack and contacts the side of the battery pack in the power battery pack. The heat exchange part includes a heat exchange pipe 3, which has a number of heat exchange pipes 3 and is installed in the power battery pack in a spiral shape, and the two ends of the heat exchange pipe 3 can be connected with two adjacent connecting pipes 2 along the direction of the liquid supply pipe 1.

[0054] In the embodiment, the connection assembly is connected between the heat exchange tube 3 and the connecting tube 2, and the connection assembly can be used to achieve a sealed connection and fixation between the end of the heat exchange tube 3 and the connecting tube 2. The reversing assembly is installed inside the connecting tube 2, and when the heat exchange tube 3 is connected to the connecting tube 2, the reversing assembly allows all the liquid inside the liquid supply tube 1 to flow into the heat exchange tube 3, and then flow back to the liquid supply tube 1 from the other end of the heat exchange tube 3.

[0055] In the embodiment, the heat exchange part also includes a bonding plate 4 and a heat exchange block 5, the heat exchange tube 3 is arranged inside the heat exchange block 5, the bonding plate 4 is between the heat exchange block 5 and the side of the battery pack, and the two opposite sides of the bonding plate 4 are in contact with the heat exchange block 5 and the side of the battery pack at the same time, and the contact surface between the bonding plate 4 and the heat exchange block 5 is a wedge-shaped surface.

[0056] In the embodiment, the connecting assembly includes a docking tube 6, a driving assembly and an automatic locking assembly. An alignment hole 7 is opened on the bottom surface of the heat exchange block 5. There are two alignment holes 7, and the distance between the two alignment holes 7 is consistent with the distance between the two adjacent connecting tubes 2 on the liquid supply pipe 1. The docking tube 6 is arranged in the alignment hole 7, and the docking tube 6 is slidingly and sealedly connected to the end of the heat exchange tube 3. At the same time, the docking tube 6 can be spirally inserted into the connecting tube 2 and threadedly and sealedly connected to the connecting tube 2. The driving assembly is installed in the heat exchange block 5, and the docking tube 6 is driven to slide and rotate by the driving assembly. The automatic locking assembly is installed in the heat exchange block 5, and the connection between the docking tube 6 and the connecting tube 2 is maintained by the automatic locking assembly.

[0057] In an embodiment, the driving assembly includes a gear column 8, a gear plate 9, a driving rod 10 and a transmission column 11. A first cavity 12 is provided inside the heat exchange block 5. The gear column 8 is fixedly mounted on the surface of the docking tube 6. The driving rod 10 is rotatably mounted in the first cavity 12, and the gear plate 9 is fixedly mounted on the surface of the driving rod 10. At the same time, the gear plate 9 is meshed with the gear column 8. A countersunk hole 13 is provided on the top surface of the heat exchange block 5. The top end of the driving rod 10 extends into the countersunk hole 13. The transmission column 11 is arranged in the countersunk hole 13 and is fixedly mounted on the top end of the driving rod 10. At the same time, an external socket wrench can be sleeved on the surface of the transmission column 11 and drive the transmission column 11 to rotate.

[0058] In the embodiment, the automatic locking assembly includes a first sleeve 14, a transmission sleeve 15, a spring 16, a limit column 17, a second sleeve 18 and a reset assembly. A second cavity 19 is opened in the middle of the heat exchange block 5. The first sleeve 14 is slidably installed in the second cavity 19 and can rotate, and the first sleeve 14 extends into the countersunk hole 13 and is sleeved on the surface of the transmission column 11. At the same time, the first sleeve 14 can drive the transmission column 11 to rotate synchronously. The transmission sleeve 15 is slidably sleeved on the surface of the drive rod 10 and can rotate synchronously with the drive rod 10. The inner ring of the spring 16 is fixedly connected to the surface of the transmission sleeve 15, and the outer ring is fixedly connected to the inner wall of the second cavity 19. The limit column 17 is fixedly installed at the bottom end of the drive rod 10. The second sleeve 18 is below the limit column 17 and is fixedly connected to the inner bottom surface of the second cavity 19, and the limit column 17 can be inserted into the second sleeve 18 to limit the limit column 17 for rotation. The reset assembly is connected to the first sleeve 14, and the first sleeve 14 can be reset by the reset assembly.

[0059] In an embodiment, the reset assembly includes a fixed ring 20, a movable ring 21 and a first reset spring 22. The fixed ring 20 is fixedly installed inside the second cavity 19, the movable ring 21 is fixedly installed on the surface of the first sleeve 14, and the first reset spring 22 is a compression spring and is installed between the fixed ring 20 and the movable ring 21. At the same time, the first reset spring 22 is sleeved on the surface of the first sleeve 14.

[0060] In an embodiment, the reversing assembly includes a reversing head 23 and a linkage assembly. The reversing head 23 is slidably installed in the middle of the connecting pipe 2. A flow channel is provided in the middle of the reversing head 23. When the reversing head 23 extends into the liquid supply pipe 1, the heat exchange liquid in the liquid supply pipe 1 can flow into the connecting pipe 2 from the flow channel. At the same time, when the reversing head 23 is tightly attached to the inner wall of the liquid supply pipe 1, the reversing head 23 will block the liquid supply pipe 1 and allow the heat exchange liquid inside the liquid supply pipe 1 to completely flow into the flow channel. When the reversing head 23 is completely retracted into the connecting pipe 2, the liquid supply pipe 1 and the flow channel will be disconnected. The linkage assembly is connected between the reversing head 23 and the docking pipe 6. When the docking pipe 6 is connected to the connecting pipe 2, the reversing head 23 can be driven to slide through the linkage assembly.

[0061] In the embodiment, the linkage assembly includes a linkage tube 24, a fixed retaining ring 25, a movable retaining ring 26 and a second return spring 27. The linkage tube 24 is slidably arranged in the connecting tube 2, and the linkage tube 24 is fixedly connected to the reversing head 23. At the same time, the linkage tube 24 is connected to the flow channel. The fixed retaining ring 25 is fixedly installed inside the connecting tube 2, and the movable retaining ring 26 is fixedly installed at the end of the linkage tube 24. The second return spring 27 is a compression spring and is installed between the fixed retaining ring 25 and the movable retaining ring 26. At the same time, the second return spring 27 is sleeved on the surface of the linkage tube 24, and a sealing ring 28 is fixedly installed on the upper surface of the movable retaining ring 26.

[0062] It should be noted that the two reversing heads 23 connected to the two ends of the heat exchange tube 3 are arranged to be separated from each other. The heat exchange block 5 can be opened in half from the middle and fixed to each other by bolts to form a complete heat exchange block 5.

[0063] In the embodiment, during use, when it is necessary to heat the inside of the power battery pack, it is only necessary to pass the heat exchange fluid heated by the external heating device into the liquid supply pipe 1. After that, when the heat exchange fluid flows through the connecting pipe 2, it will flow into the connecting pipe 2 from the flow channel of the reversing head 23, and then enter the heat exchange tube 3 through the docking pipe 6. At this time, the heat of the heat exchange fluid will be transferred to the battery pack inside the power battery pack through the heat exchange block 5 and the bonding plate 4, thereby finally heating the power battery pack.

[0064] In the embodiment, when the heating pipeline needs to be inspected and repaired, it is only necessary to open the protective cover of the power battery pack, and then put the external socket wrench from the countersunk hole 13 on the surface of the transmission column 11. During this process, the external socket wrench will first push the first sleeve 14 to slide down until it is separated from the transmission column 11. During this process, the first sleeve 14 will also drive the limiting column 17 to slide down synchronously until it is inserted into the second sleeve 18. At this time, the first sleeve 14 will remain limited, and then the external socket wrench is rotated to drive the transmission column 11 to rotate and then drive the drive rod 10 to rotate. The drive rod 10 will drive the gear plate 9 to rotate, the gear plate 9 will drive the gear column 8 to rotate, and the gear column 8 will drive the docking tube 6 to rotate, so that the docking tube 6 is spirally separated from the connecting tube 2, and then the same operation is performed on the other transmission column 11 of the heat exchange block 5. At this time, the entire heat exchange tube 3 and the heat exchange block 5 can be removed separately, thereby realizing partial replacement and maintenance of the entire heating pipeline.

[0065] Moreover, in the above process, under the action of the second return spring 27, the interlocking tube 24 and the reversing head 23 will be driven to slide into the connecting tube 2 through the movable retaining ring 26. At this time, the heat exchange liquid inside the liquid supply tube 1 will not pass through the flow channel inside the reversing head 23, thereby realizing the automatic cutoff of the connecting tube 2. After the heat exchange tube 3 and the heat exchange block 5 are repaired, the heat exchange tube 3 and the connecting tube 2 can be reconnected by performing the above steps in reverse.

[0066] In the embodiment, when the docking tube 6 is screwed into the connecting tube 2, it will also synchronously push the linkage tube 24 to move, thereby driving the reversing head 23 to move into the liquid supply tube 1 until the reversing head 23 is completely in close contact with the inner wall of the liquid supply tube 1. At this time, the heat exchange fluid in the liquid supply tube 1 will pass through the flow channel in the middle of the reversing head 23, through the linkage tube 24 and the docking tube 6, and flow into the heat exchange tube 3, thereby realizing the conduction between the heat exchange tube 3 and the connecting tube 2 and the liquid supply tube 1.

[0067] In addition, during use, when the heat exchange tube 3 is connected to the connecting tube 2 and the external socket wrench is removed, the first reset spring 22 will drive the first sleeve 14 to reset through the movable ring 21 and re-sleeve it on the surface of the transmission column 11. Under this structure, when a gap is generated inside the battery due to low-temperature contraction, the spring 16 will continue to drive the drive rod 10 to rotate, thereby driving the heat exchange tube 3 to move further. In this process, the heat exchange block 5 will be driven to move closer to the liquid supply pipe 1, which will push the bonding plate 4 to move to fill the gap, thereby ensuring good heat conduction between the heat exchange block 5, the bonding plate 4 and the battery pack. It should be noted that when the heat exchange tube 3 is disassembled, the spring 16 can first drive the entire first sleeve 14 to rotate in the opposite direction to accumulate force, and then use the socket wrench to push it into the second cavity 19 to avoid insufficient torque of the spring 16.

[0068] During the entire use process, the entire heating device is mainly composed of heat exchange tubes 3 and liquid supply tubes 1 that can be separated and combined. Under this structure, when it needs to be repaired, the local heat exchange tubes 3 can be freely removed according to needs, so that there is no need to completely disassemble the heat exchange components inside the entire battery pack, which undoubtedly greatly simplifies the maintenance process and makes maintenance simpler and more convenient.

[0069] At the same time, during use, under the action of the reversing assembly, when a certain heat exchange tube 3 is removed, the reversing assembly will automatically close the connecting tube 2 connected to the heat exchange tube 3, thereby ensuring the stable transmission of the heat exchange liquid inside the liquid supply pipe 1, avoiding a large amount of heat exchange liquid loss, and ensuring that the entire heat exchange equipment is still operating normally, which is convenient for continued maintenance of the remaining parts so as to check them one by one.

[0070] Moreover, during use, when the battery pack shrinks due to low temperature and creates a gap, the connecting assembly will drive the heat exchange block 5 and the bonding plate 4 to automatically fill the gap, thereby avoiding poor heating caused by insufficient heat conduction due to the gap, and effectively ensuring the heating effect.

[0071] According to a second aspect of an embodiment of the present application, a battery pack is provided, and the battery pack includes the above heating device.

[0072] According to a third aspect of an embodiment of the present application, a vehicle is provided. The vehicle includes a battery pack as described above, and the vehicle may be, for example, a new energy vehicle.

[0073] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or directly / indirectly applied in other related technical fields are included in the protection scope of the present application.

Claims

1. A heating device, characterized in that: The heating device comprises: A heat exchange block, wherein the heat exchange block is arranged between adjacent single cells; A heat exchange path, the heat exchange path is arranged inside the heat exchange block, the heat exchange path is used to circulate a heat exchange medium, and the heat exchange path has a medium inlet and a medium outlet; A connecting pipe and a butt pipe, wherein the butt pipe is detachably connected to the connecting pipe to connect the connecting pipe and the medium inlet, and the butt pipe is separated from the connecting pipe to separate the medium inlet and the connecting pipe; A reversing assembly, the reversing assembly is disposed in the connecting pipe and communicated with the connecting pipe; a liquid supply pipe, the liquid supply pipe being used to provide a heat exchange medium, the reversing assembly being disposed in the connecting pipe and configured to be inserted into the liquid supply pipe when the butt pipe is detachably connected to the connecting pipe, so as to provide the heat exchange medium to the medium inlet; Wherein, when the butt joint pipe is separated from the connecting pipe, the reversing assembly is configured to move toward the side where the butt joint pipe is located and disengage from the liquid supply pipe to stop supplying the heat exchange medium to the medium inlet; The heat exchange block comprises at least two parts detachably connected to each other, each of the at least two parts having a part of the heat exchange path; The reversing assembly includes a reversing head and a linkage assembly. The reversing head is slidably installed in the middle of the connecting pipe. A flow channel is provided in the middle of the reversing head. The linkage assembly is connected between the reversing head and the docking pipe. When the docking pipe is connected to the connecting pipe, the reversing head is driven to slide through the linkage assembly.

2. The heating device according to claim 1, characterized in that The butt joint tube rotates to separate from the connecting tube. The heating device also includes a transmission column that drives the butt joint tube to rotate. The transmission column is arranged side by side with the butt joint tube. The outer side of the heat exchange block has a recess, and the end of the transmission column is located in the recess.

3. The heating device according to claim 2, characterized in that The heating device further comprises a locking sleeve, which is sleeved on the outside of the transmission column. The locking sleeve can also move along the axial direction of the transmission column to expose the end of the transmission column located in the recess.

4. The heating device according to claim 2, characterized in that The heating device also includes an energy storage component, which is arranged inside the heat exchange block and connected to the transmission column. When the transmission column rotates to separate the docking pipe from the connecting pipe, the energy storage component stores energy to apply a reset force to the transmission column.

5. The heating device according to claim 1, characterized in that The heat exchange block has a chamber for accommodating the connecting pipe, the chamber intersects with the liquid supply pipe, the reversing head includes a first part extending in the same direction as the liquid supply pipe, and the reversing head also includes a second part extending in the same direction as the chamber; The reversing head is configured to move toward the side where the butt joint pipe is located so as to enter the chamber, and the first part seals the communication position between the chamber and the liquid supply pipe.

6. The heating device according to claim 1, characterized in that The heating device further comprises a bonding plate, which is bonded to the side of the heat exchange block facing the single battery, and the bonding plate is bonded to both the heat exchange block and the single battery.

7. The heating device according to claim 1, characterized in that The heating device has a plurality of the heat exchange blocks, and the liquid supply pipe extends in a winding manner to flow through each of the heat exchange blocks in sequence.

8. A battery pack, characterized in that: The battery pack comprises the heating device according to any one of claims 1 to 7.

9. A vehicle, characterized in that: The vehicle includes the battery pack as claimed in claim 8.

Images