CN219493434U - Joint structure, battery pack assembly and vehicle - Google Patents

Abstract

The present disclosure relates to a joint structure, a battery pack assembly, and a vehicle, the joint structure including a second joint assembly for connecting with a first joint assembly of a vehicle end, the first joint assembly including a first pipe and a first installation portion connected with the first pipe, one end of the first pipe being formed with a first connection portion; the second joint assembly comprises a second pipeline and a second installation part connected with the second pipeline, one end of the second pipeline is provided with a second connection part which can be detachably communicated with the first connection part, and the other end of the second pipeline is provided with a third connection part; and one end of the connecting pipeline is provided with a fourth connecting part which can be detachably communicated with the third connecting part, and the other end of the connecting pipeline is fixedly communicated with the liquid cooling plate. The joint structure can improve the assembly efficiency, reduce the leakage risk and the assembly cost, and simultaneously reduce the local pressure loss.

Description

Joint structure, battery pack assembly and vehicle

Technical Field

The present disclosure relates to the field of connection joint technology, and in particular, to a joint structure, a battery pack assembly, and a vehicle.

Background

New energy vehicles (e.g., electric automobiles) have received increasing attention as a vehicle employing clean energy. In order to improve the service life and safety of the battery of the electric vehicle, a liquid cooling plate is generally required to cool the battery of the electric vehicle.

The liquid cooling plate is generally connected with an automobile cooling system with a power exchanging function through a quick water exchanging joint, wherein the quick water exchanging joint comprises a vehicle end joint and a package end joint in the related technology, and the vehicle end joint is connected with a whole vehicle pipeline; the pack end connector is connected with a cooling system (such as a liquid cooling plate) in the battery pack, so that the liquid cooling plate is quickly connected with the whole car. However, because of the structural form of the pack end connector, when the pack end connector is communicated with the liquid cooling plate in the battery pack, an additional hose is needed, two assemblies and two sealing positions are needed, the assembly cost is increased, the leakage risk is high, and the local pressure loss at the joint is too large, so that the power consumption is increased.

Disclosure of Invention

The utility model provides an object provides a connect structure, battery package assembly and vehicle, this connect structure can improve assembly efficiency, reduces weeping risk and assembly cost, can also reduce local pressure loss simultaneously to at least partially solve relevant technical problem.

To achieve the above object, a first aspect of the present disclosure provides a joint structure, including:

the second joint assembly is used for being connected with a first joint assembly at the vehicle end, wherein the first joint assembly comprises a first pipeline and a first installation part connected with the first pipeline, and a first connection part is formed at one end of the first pipeline;

The second joint assembly comprises a second pipeline and a second installation part connected with the second pipeline, one end of the second pipeline is provided with a second connection part which can be detachably communicated with the first connection part, and the other end of the second pipeline is provided with a third connection part; and

the connecting pipe, the one end of connecting pipe is formed with can with the fourth connecting portion of the detachable intercommunication of third connecting portion, and the other end is used for fixed intercommunication with the liquid cooling board.

Optionally, the second joint assembly further comprises a second stop unit disposed in the second pipe, the second stop unit being configured to releasably seal the second connection portion;

when the second connecting part is spliced with the first connecting part, the second stop unit can be matched with the first stop unit arranged in the first pipeline to be unlocked, so that the first pipeline is communicated with the second pipeline.

Optionally, the first stop unit includes a first slider and a first push rod;

one end of the first push rod is connected with the first pipeline, the other end of the first push rod extends towards the opening direction of the first connecting part and is provided with a sealing part, and the first sliding block is elastically connected to the inner side wall of the first pipeline and is sleeved on the first push rod; the first slider is movable to the sealing portion for sealing the first connecting portion;

The second stop unit comprises a second sliding block and a fixed ring;

the fixing ring is fixedly arranged in the second pipeline, the second sliding block is elastically connected to the second pipeline, and the second sliding block can move to the inner cavity of the fixing ring and is used for sealing the second connecting part;

when the first pipeline is spliced with the second pipeline, the first push rod is abutted with the second slide block, the first push rod can push the second slide block to slide out of the inner cavity of the fixed ring, and the second connecting part or the fixed ring pushes the first slide block to move inwards, so that the first pipeline is communicated with the second pipeline.

Optionally, the first stop unit further includes a first base and a first elastic member;

the first base is fixedly connected in the first pipeline, one end of the first push rod, which is far away from the sealing part, is connected with the first base, one end of the first elastic piece is connected with the first base, and the first sliding block is connected with the other end of the first elastic piece and is connected with the inner side wall of the first pipeline in a sliding manner; the first sliding block can be sleeved on the push rod part of the first push rod in a clearance way and is sleeved on the sealing part of the first push rod in a sealing way;

The second stop unit further comprises a second base and a second elastic piece;

the second base is fixedly arranged in the second pipeline, the fixed ring is close to the opening of the second connecting part relative to the second base, one end of the second elastic piece is connected with the second base, the second sliding block is connected with the other end of the second elastic piece, the second elastic piece can drive the second sliding block to move to the inner cavity of the fixed ring, and the second sliding block can slide out from the inner cavity of the fixed ring under the pushing of the first push rod.

Optionally, the second elastic member is configured as a spring;

and/or the second connecting part is provided with a first sealing element for sealing a gap between the first connecting part and the second connecting part when the first connecting part and the second connecting part are spliced.

Optionally, the second connecting portion and the third connecting portion are respectively located at two opposite sides of the second mounting portion.

Optionally, the second joint assembly further includes a protective sleeve, where the protective sleeve is sleeved on the second connection portion and is connected to a side of the second installation portion away from the third connection portion.

Optionally, a side of the second mounting portion remote from the third connecting portion is formed with a second seal for sealing.

Optionally, the second mounting portion is formed with a sealing groove located in the circumferential direction of the second pipe, and the second sealing element is disposed in the sealing groove;

and/or the second installation part is formed with a screw hole or an embedded nut for being connected with the structure to be installed.

Optionally, the connecting pipeline includes a first connecting section for communicating with the third connecting portion and a second connecting section vertically connected to one end of the first connecting section, and the second connecting section is used for communicating with the liquid cooling plate.

Optionally, the second pipeline includes first and second body, first body run through second installation department and respectively towards keeping away from second installation department direction extends, first body keep away from second body's one end forms the second connecting portion, second body connect in first body's the other end, just second body keep away from first body's one end forms the third connecting portion.

Optionally, the second pipe extends in a horizontal direction for communicating with the first pipe disposed in the horizontal direction; or alternatively

The second pipeline comprises a first pipeline section and a second pipeline section which is vertically connected with the first pipeline section, the first pipeline section extends along the vertical direction, the first pipeline section is used for being communicated with the first pipeline which is arranged along the vertical direction, and the second pipeline section is communicated with the connecting pipeline.

Optionally, a third sealing element for sealing a gap between the third connecting part and the fourth connecting part is arranged at the joint of the third connecting part and the fourth connecting part;

and/or a locking piece for locking the third connecting part and the fourth connecting part is arranged at the joint of the third connecting part and the fourth connecting part.

Optionally, one of the third connection portion and the fourth connection portion is configured as a female joint; the other is configured as a male connector.

Optionally, the number of the first pipelines and the number of the second pipelines are at least two, and the first pipelines and the second pipelines are in one-to-one correspondence.

In a second aspect of the present disclosure, a battery pack assembly is provided that includes the above-described tab structure.

In a third aspect of the present disclosure, there is also provided a vehicle including a vehicle body and the battery pack assembly described above;

the vehicle body comprises a first joint assembly, wherein the first joint assembly comprises a first pipeline and a first installation part connected with the first pipeline, and a first connection part is formed at one end of the first pipeline;

the first connecting portion is detachably communicated with the second connecting portion.

Optionally, the first joint assembly further comprises a first through-stop unit disposed in the first pipe, and the first through-stop unit is used for sealing the first connection part in an unlocking manner.

Optionally, the first stop unit includes a first base, a first elastic member, a first slider, and a first push rod;

the first base is fixedly connected in the first pipeline, one end of the first push rod is connected with the first base, the other end of the first push rod extends towards the opening direction of the first connecting part and is provided with a sealing part, one end of the first elastic piece is connected with the first base, and the first sliding block is connected with the other end of the first elastic piece and is connected with the inner side wall of the first pipeline in a sliding way; the first sliding block is sleeved on the first push rod, and the first elastic piece can drive the first sliding block to move to the sealing part, so that the sealing part is positioned in the inner cavity of the first sliding block and used for sealing the first connecting part.

Optionally, the first pipe is integrally formed with the first mounting portion.

Through above-mentioned technical scheme, the joint structure of this disclosure promptly, the second installation department through the second joint subassembly realizes with wait that the connection of mounting structure (for example tray or sealed lid of battery package frame is fixed to be connected with the fourth connecting portion of connecting tube through the third connecting portion of second pipeline, the other end and the fixed intercommunication of liquid cooling board of connecting tube, in order to realize the intercommunication of liquid cooling board and whole car cooling system, the second connecting portion of second joint subassembly can also be detachably be connected with the first installation department of the first joint subassembly of vehicle end (vehicle body) simultaneously. The joint structure of the present disclosure utilizes the detachable connection of the fourth connecting portion of the connecting pipeline and the second pipeline, and the other end is fixedly connected with the liquid cooling plate, namely, the communication between the sealing joint and the liquid cooling plate is realized through one sealing connection, compared with two sealing parts in the related art, the assembly efficiency is improved, the leakage risk and the assembly cost are reduced, and meanwhile, the local pressure loss is also reduced.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic structural view of a joint structure provided by some embodiments of the present disclosure;

FIG. 2 is an exploded view of a joint structure provided by some embodiments of the present disclosure;

FIG. 3 is an exploded view of a first joint assembly of a joint structure provided by some embodiments of the present disclosure;

FIG. 4 is a block diagram of a first stop unit of a joint structure provided by some embodiments of the present disclosure;

FIG. 5 is a block diagram of a second joint assembly of a joint structure provided by some embodiments of the present disclosure;

FIG. 6 is an exploded view of a second joint assembly of a joint structure provided by some embodiments of the present disclosure;

FIG. 7 is a cross-sectional view of a second joint assembly of a joint structure provided by some embodiments of the present disclosure;

FIG. 8 is a block diagram of a second stop unit of a joint structure provided by some embodiments of the present disclosure;

FIG. 9 is a block diagram of a connecting conduit of a joint structure provided by some embodiments of the present disclosure;

FIG. 10 is a cross-sectional view of a connecting conduit of a joint structure provided by some embodiments of the present disclosure;

FIG. 11 is a schematic structural view of a joint structure provided by some embodiments of the present disclosure, wherein connecting conduits are not shown;

FIG. 12 is a cross-sectional view taken along line A-A of FIG. 11, wherein the first conduit is in communication with the second conduit;

FIG. 13 is a cross-sectional view taken along line A-A of FIG. 11, wherein the first conduit is in a disconnected state from the second conduit;

fig. 14 is a schematic view of a battery pack assembly provided in some embodiments of the present disclosure;

FIG. 15 is a schematic structural view of a battery pack assembly provided in some embodiments of the present disclosure, wherein only the joint structure, the liquid cooling plate, and a portion of the side wall plate are shown;

FIG. 16 is a cross-sectional view taken from B-B in FIG. 15;

fig. 17 is an enlarged view based on a portion C in fig. 16;

FIG. 18 is a schematic view of a joint structure provided by other embodiments of the present disclosure;

FIG. 19 is a cross-sectional view of a joint structure provided by other embodiments of the present disclosure;

FIG. 20 is a schematic view of a battery pack assembly according to further embodiments of the present disclosure, wherein only the top cover and the liquid cooling plate are illustrated;

fig. 21 is a side partial schematic view of a battery pack assembly provided in accordance with further embodiments of the present disclosure.

Description of the reference numerals

1-a battery pack assembly; 10-linker structure; 20-a battery module; 21-a liquid cooling plate; 22-side coaming; 23-top cover; 100-a first joint assembly; 110-a first conduit; 111-a first connection; 120-a first mounting portion; 130-a first stop unit; 131-a first base; 132-a first elastic member; 133-a first slider; 134-first push rod; 134 a-a pushrod portion; 134 b-a seal; 200-a second joint assembly; 210-a second conduit; 211-a second connection; 210 a-first tube body; 210 b-second tube body; 2111-a first pipe section; 2112-a second pipe section; 2113—a water temperature sensor; 212-a third connection; 220-a second mounting portion; 221-embedding nuts; 230-a second stop unit; 231-a second base; 232-a second elastic member; 233-a second slider; 234-a securing ring; 240-a protective sleeve; 250-a first seal; 260-a second seal; 270-a third seal; 280-locking piece; 300-connecting pipelines; 300 a-a first connection section; 300 b-a second connection section; 310-fourth connection.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "upper, lower, left, right" are used generically to refer to the upper, lower, left, right of the corresponding figure; "inner and outer" means the inner and outer of the corresponding component profile; "distal" and "proximal" refer to a respective structure or component that is distal to or proximal to another structure or component. In addition, the terms "first," "second," and the like, as used in this disclosure, are used to distinguish one element from another element without sequence or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained. The foregoing definitions are provided for the purpose of illustrating and explaining the present disclosure and should not be construed as limiting the present disclosure.

In the related art, the quick-change water joint may include a connection male and a connection female, for example, a male and a complete vehicle pipe connection; the mother head is connected with a cooling system (such as a liquid cooling plate) in the battery pack, so that the liquid cooling plate is quickly connected with the whole vehicle. However, because the female head exists and its structural style etc. when leading to its and battery package internal liquid cooling board UNICOM, need extra hose, that is, the one end and the female head sealing connection of hose, the other end and liquid cooling board sealing connection need two assembly and two places sealing promptly, increase assembly cost, weeping risk are high, still can lead to junction local pressure loss too big and increase the consumption. The above-mentioned connection structure has the following drawbacks: 1. when the connecting hose is produced and installed, secondary assembly operation is required; 2. two parts of the battery pack assembly are sealed, and the risk of leakage is high; 3. two quick connectors/clamps are needed for sealing the two parts, so that the cost is increased; 4. because there are two sealing connections, the local pressure loss in the pipeline is overlarge, and the power consumption is increased. In addition, when the distance between the water inlet and outlet on the whole car and the water outlet on the liquid cooling plate is relatively short, the quick-plug connecting pipe limited by the process cannot be manufactured and cannot be used (the length is required to be larger than a certain value). The scheme of the clamp and the rubber tube also has the problems of limited space, inconvenient operation and even incapacitation.

The present disclosure is directed to a joint structure 10, a battery pack assembly 1 and a vehicle, wherein the joint structure 10 can improve assembly efficiency, reduce leakage risk and assembly cost, and reduce local pressure loss simultaneously, so as to at least partially solve related technical problems.

As shown in fig. 1 to 21, in order to achieve the above object, the present disclosure provides a joint structure 10 provided at a pack end and used for connection of the pack end to a vehicle end (vehicle body), i.e., a first connection assembly 100 for connecting a liquid cooling plate 21 of a battery pack to the vehicle body of the vehicle, and a detailed description of the specific structure will be given below in connection with the joint structure 10 and the vehicle body. The joint structure 10 includes a second joint assembly 200 and a connection pipe 300, one end of the second joint assembly 200 is connected to the connection pipe 300, and the other end is connected to the first joint assembly 100 of the vehicle body. Wherein, the first joint assembly 100 includes a first pipe 110 and a first installation part 120 connected with the first pipe 110, and a first connection part 111 is formed at one end of the first pipe 110; the second joint assembly 200 includes a second pipe 210 and a second mounting part 220 connected to the second pipe 210, one end of the second pipe 210 is formed with a second connection part 211 detachably communicating with the first connection part 111, and the other end is formed with a third connection part 212; the connection pipe 300 has a fourth connection portion 310 formed at one end thereof to be detachably connected to the third connection portion 212 and has the other end fixedly connected to the liquid cooling plate 21. The first mounting portion 120 is used for connecting the first joint assembly 100 with the vehicle end, and may be configured by any suitable structure, for example, may be configured as a plate structure, and a through hole or a screw hole is formed in the plate structure, so that the first mounting portion is conveniently and fixedly connected to the vehicle end (vehicle body) through a locking member. The second mounting portion is used for connecting the second connector assembly 200 with the pack end, and may be configured by any suitable structure, for example, may be configured as a plate structure, and a screw hole or an embedded nut is formed on the plate structure, so that the second connector assembly 200 is conveniently and fixedly connected to Bao Duan (a battery pack, such as a tray or a sealing cover of a battery pack frame) by a threaded locking member

Through the above technical solution, namely, the joint structure 10 of the present disclosure, the first mounting portion 120 of the first joint assembly 100 can be fixedly connected with the vehicle body, the second mounting portion 220 of the second joint assembly 200 is used to connect with the structure to be mounted (such as a tray or a sealing cover of a battery pack frame) at the pack end, the first connecting portion 111 of the first pipe 110 is connected with the second connecting portion 211 of the second pipe 210, the fourth connecting portion 310 of the connecting pipe 300 is detachably connected with the third connecting portion 212 of the second pipe 210, and the other end of the connecting pipe 300 is fixedly communicated with the liquid cooling plate 21, so as to realize the communication between the liquid cooling plate 21 and the whole vehicle cooling system. The joint structure 10 of the present disclosure utilizes the detachable connection of the fourth connection portion 310 of the connection pipe 300 and the second pipe 210, and the fixed connection of the other end and the liquid cooling plate 21, that is, the communication between the sealed joint and the liquid cooling plate 21 is realized through one sealing connection, compared with two sealing parts in the related art, the assembly efficiency is improved, the leakage risk and the assembly cost are reduced, and meanwhile, the local pressure loss is also reduced.

The first connection part 111 and the second connection part 211 may be constructed in any suitable structure, and when the first connection part 111 is detached from the second connection part 211, in order to avoid leakage of the coolant in the first pipe 110 and the second pipe 210, as shown in fig. 3, 4, 7, 8, 12 and 13, in some embodiments of the present disclosure, the first joint assembly 100 further includes a first pass stop unit 130 provided in the first pipe 110, the first pass stop unit 130 being used to releasably seal the first connection part 111; the second joint assembly 200 further includes a second stopping unit 230 disposed in the second pipe 210, the second stopping unit 230 being configured to releasably seal the second connecting portion 211; when the first connection portion 111 is plugged with the second connection portion 211, the first through-stop unit 130 and the second through-stop unit 230 are matched and unlocked, so that the first pipeline 110 is communicated with the second pipeline 210. When the first connection portion 111 is in plug connection with the second connection portion 211, the first through-stop unit 130 is matched with the second through-stop unit 230 to unlock the seal of the first through-stop unit 130 to the first connection portion 111 and the seal of the second through-stop unit 230 to the second connection portion 211, so that the communication between the first pipeline 110 and the second pipeline 210 is realized, and the cooling liquid in the cooling system of the vehicle can enter the liquid cooling plate 21 through the first pipeline 110, the second pipeline 210 and the connection pipeline 300 and then cool the battery of the vehicle. When the first pipe 110 is separated from the second pipe 210, the first connection portion 111 can be sealed by the first stopper unit 130, and the second connection portion 211 can be sealed by the second stopper unit 230, so that leakage of the coolant from the cooling system of the vehicle through the first connection portion 111 of the first pipe 110 and the coolant from the liquid cooling plate 21 through the second connection portion 211 of the second pipe 210 is avoided. Through the above arrangement, when the first pipe 110 and the second pipe 210 are connected, the liquid cooling plate 21 of the battery pack and the cooling system of the vehicle can be quickly, effectively and reliably communicated, and when the liquid cooling plate 21 and the cooling system are separated, the leakage-stopping units arranged in the liquid cooling plate can seal the inner space, so that the leakage of the cooling liquid is prevented.

The first and second pass stop units 130 and 230 may be constructed in any suitable structure, as shown in fig. 3 and 4, and in some embodiments of the present disclosure, the first pass stop unit 130 may include a first base 131, a first elastic member 132, a first slider 133, and a first push rod 134; the first base 131 is fixedly connected in the first pipeline 110, one end of the first push rod 134 is connected with the first base 131, the other end extends towards the opening direction of the first connecting part 111 and is provided with a sealing part 134b, one end of the first elastic piece 132 is connected with the first base 131, and the first slider 133 is connected with the other end of the first elastic piece 132 and is slidably connected with the inner side wall of the first pipeline 110; the first slider 133 is sleeved on the first push rod 134, and the first elastic member 132 can drive the first slider 133 to move to the sealing portion 134b, so that the sealing portion 134b is located in the inner cavity of the first slider 133 and is used for sealing the first connection portion 111. The first base 131 may have any shape, but it is required that the cooling liquid can flow through the first base 131 when the first base 131 is installed in the first pipe 110, that is, the first base 131 does not affect the circulation of the cooling liquid in the first pipe 110. For example, the first base 131 may be constructed in a cross-shaped structure, and the coolant may flow from one side of the cross-shaped structure to the other side through a gap between the cross-shaped structure and the inner sidewall of the first pipe 110. The first slide bar may include a slide bar portion having one end fixedly connected with the first base 131 and the other end connected with the sealing portion 134b, and the sealing portion 134b has a size larger than that of the slide bar portion. The first slider 133 may be configured as an annular slider, that is, the outer sidewall of the sliding slider is circumferentially slidably connected with the inner sidewall of the first pipe 110, the first push rod 134 is inserted into the inner cavity of the annular slider, the sliding rod portion is in clearance fit with the inner cavity, the sealing portion 134b corresponds to the inner cavity in size and shape, two ends of the first elastic member 132 are respectively connected with the first base 131 and the annular slider, and in a state where the first pipe 110 is separated from the second pipe 210, the first elastic member 132 can drive the annular slider to move to a position flush with the sealing portion 134b, that is, the sealing portion 134b is located at the inner cavity of the annular slider and is used for sealing the first connecting portion 111, so as to avoid leakage of the cooling liquid inside the first pipe 110.

It should be noted that, the sealing portion 134b may be configured as a cylindrical structure, and the inner cavity of the annular slider may be configured as a cylindrical cavity adapted to the cylindrical structure, so that the sealing of the first pipe 110 can be achieved when the cylindrical structure is located in the cylindrical cavity in the initial state of the first elastic member 132.

As shown in fig. 7 and 8, the second stopping unit 230 includes a second seat 231, a second elastic member 232, a second slider 233, and a fixing ring 234; the second seat 231 and the fixing ring 234 are respectively fixed in the second pipe 210, and the fixing ring 234 is close to the opening of the second connecting portion 211 relative to the second seat 231, one end of the second elastic member 232 is connected with the second seat 231, the second slider 233 is connected to the other end of the second elastic member 232, and the second elastic member 232 can drive the second slider 233 to move to the inner cavity of the fixing ring 234 for sealing the second connecting portion 211. However, it is necessary that the second seat 231 has any shape, and when the second seat 231 is mounted in the second pipe 210, the coolant can flow through the second seat 231, that is, the second seat 231 does not affect the circulation of the coolant in the second pipe 210. For example, the second chassis 231 may be constructed in the same cross-type structure as the first chassis 131.

The second slider 233 may be configured as a cylindrical structure, the fixing ring 234 may be configured as a circular ring structure, the outer sidewall of the fixing ring 234 is fixedly and sealingly connected with the inner sidewall of the second pipe 210, the inner cavity of the fixing ring 234 is configured as a cylindrical inner cavity adapted to the cylindrical structure of the second slider 233, and the second elastic member 232 is in the initial state, and the second slider 233 is located in the cylindrical inner cavity, so that the second pipe 210 can be sealed.

When the first pipe 110 is inserted into the second pipe 210, the first push rod 134 abuts against the second slider 233, the first push rod 134 can push the second slider 233 to slide out from the inner cavity of the fixed ring 234, and the second connecting portion 211 or the fixed ring 234 pushes the first slider 133 to move towards the first base 131, so that the first pipe 110 is communicated with the second pipe 210. Therefore, when the first joint assembly 100 and the second joint assembly 200 of the joint structure 10 are connected, the first pipe 110 and the second pipe 210 may be inserted together, at this time, the front end of the first push rod 134 abuts against the front end of the second slider 233, the first push rod 134 pushes the second slider 233 toward the inner direction of the second pipe 210, the second elastic member 232 is pressed, at the same time, the front end of the second connecting portion 211 or the fixing ring 234 abuts against the front end of the first slider 133, and pushes the first slider 133 toward the inner direction of the first pipe 110, the first elastic member 132 is pressed, and as the insertion proceeds, the first slider 133 is separated from the sealing portion 134b of the first push rod 134, and the second slider 233 is separated from the inner cavity of the fixing ring 234, thereby achieving communication between the first pipe 110 and the second pipe 210. When the first pipe 110 is separated from the second pipe 210, the first elastic member 132 and the second elastic member 232 elastically return and respectively push the first slider 133 and the second slider 233 to return, thereby sealing the first connection portion 111 of the first pipe 110 and the second connection portion 211 of the second pipe 210.

The specific structures of the first base 131, the first elastic member 132, the first slider 133, the first push rod 134, the second base 231, the second elastic member 232, the second slider 233, and the fixing ring 234 are exemplary, and any shape and structure capable of achieving the same or similar functions may be adopted in other embodiments, and the present invention is not limited thereto.

The first and second elastic members 132, 232 may be configured in any suitable configuration, as shown in fig. 4 and 8, and in some embodiments, both the first and second elastic members 132, 232 may be configured as springs. The spring serving as the first elastic member 132 may be sleeved on the first push rod 134, the spring serving as the second elastic member 232 may be respectively connected with the second seat 231 and the second slider 233, and for facilitating connection between the spring and the second slider 233, the second slider 233 may include a cylindrical sealing portion and a cylindrical fixing portion, where the cylindrical sealing portion is used to realize sealing connection with the inner cavity of the fixing ring 234, and the cylindrical fixing portion is used to be fixedly connected with one end of the spring far away from the second seat 231. It can be understood that the first elastic member 132 and the second elastic member 232 may also be elastic sheets, elastic rubber, etc., and can be used to unlock the seal when the first pipe 110 is connected to the second pipe 210, and drive the first slider 133 and the second slider 233 to realize the seal when the first pipe 110 is separated from the second pipe 210.

In some embodiments, a first seal 250 is provided at the junction of the first connection 111 and the second connection 211 for sealing the gap between the first connection 111 and the second connection 211. For example, when the second connection portion 211 is inserted into the first connection portion 111, an annular sealing ring or sealing strip may be disposed between the outer sidewall of the second connection portion 211 and the inner sidewall of the first connection portion 111 to seal a gap therebetween. Conversely, when the first connecting portion 111 is inserted into the second connecting portion 211, an annular sealing ring or sealing strip may be disposed between the outer sidewall of the first connecting portion 111 and the inner sidewall of the second connecting portion 211, and the gap between the two may also be sealed. The sealing ring and the sealing strip comprise, but are not limited to, rubber materials, and can be made of any suitable materials known in the art, and are not particularly limited herein.

As shown in fig. 2, in some embodiments of the present disclosure, the second connection portion 211 and the third connection portion 212 are located at opposite sides of the second mounting portion 220, respectively. The second mounting portion 220 may have any suitable structure, for example, a rectangular member, and the second pipe 210 may be inserted into the second mounting portion 220 and extend from opposite sides of the second mounting portion 220, that is, the second connecting portion 211 and the third connecting portion 212 may be respectively located at opposite sides of the second mounting portion 220, the second mounting portion 220 may be used for connecting with a structure to be mounted, for example, a tray or a sealing cover on a battery pack, the second connecting portion 211 may be used for connecting with the first connecting portion 111 of the first pipe 110 outside the battery pack, and the third connecting portion 212 may be used for connecting with the liquid cooling plate 21 inside the battery pack.

In order to protect the connection between the first pipe 110 and the second pipe 210, as shown in fig. 5, in some embodiments of the disclosure, the second joint assembly 200 further includes a protection sleeve 240, where the protection sleeve 240 is sleeved on the second connection portion 211, and is connected to a side of the second installation portion 220 away from the third connection portion 212, and extends toward a direction away from the second installation portion 220. It should be noted that, the protection sleeve 240 may be fixedly connected to the second mounting portion 220, or may be integrally formed with the second mounting portion 220, for example, the protection sleeve 240 is integrally injection molded with the second mounting portion 220.

The second mounting part 220 is for connection with a structure to be mounted (e.g., a tray or a sealing cover on a battery pack), and is provided with an opening for the second duct 210 to pass therethrough, and in order to improve the sealing between the second mounting part 220 and the structure to be mounted, as shown in fig. 5, 6 and 7, in some embodiments of the present disclosure, a second sealing member 260 for sealing the second mounting part 220 and the structure to be mounted is formed at a side of the second mounting part 220 remote from the third connection part 212. The second sealing member 260 includes, but is not limited to, a sealing strip or a sealing ring, for example, in order to facilitate the installation and fixation of the second sealing member 260, a side of the second installation portion 220 facing the first installation portion 120 may be formed with a sealing groove located at the circumference of the second pipe 210 and the protection sleeve 240, and the second sealing member 260 is disposed in the sealing groove, so that the second installation portion 220 is sealed with the structure to be installed when the second installation portion 220 is fixed, so as to improve the sealing grade of the battery pack.

As shown in fig. 5, in some embodiments, in order to orient the connection of the second mounting portion 220 with the structure to be mounted, the second mounting portion 220 is formed with screw holes or pre-buried nuts 221 for connection with the structure to be mounted. The second mounting portion 220 may be provided with a plurality of screw holes, which are disposed at intervals along the circumferential direction of the second pipe 210, for example, when the second mounting portion 220 is rectangular, the screw holes may be four, and each corner of the rectangle may be provided with one screw hole. Of course, it should be noted that the nut 221 may be embedded in the second mounting portion 220, so that the nut may be conveniently connected to the structure to be mounted through the threaded locking member 280.

In some embodiments, the first conduit 110 may be integrally formed with the first mounting portion 120. That is, the first mounting portion 120 may be provided in the circumferential direction of the middle portion of the first duct 110, and both may be integrally injection-molded. It should be noted that, the first mounting portion 120 may also be fixedly connected to the circumferential direction of the first pipe 110 by, for example, welding or other fixing connection methods.

The connection pipe 300 may be constructed in any suitable structure, as shown in fig. 9 to 10, and in some embodiments, the connection pipe 300 includes a first connection section 300a for communicating with the third connection portion 212 and a second connection section 300b vertically connected to one end of the first connection section 300a, the second connection section 300b for communicating with the liquid cooling plate 21. Through the above arrangement, the second connection section 300b can be directly connected with the liquid cooling plate 21 of the battery pack in the vertical direction, the first connection section 300a can be connected with the second pipe 210 in the horizontal direction, the occupied space of the connection pipe 300 in the battery pack can be reduced, and the capacity of the battery cells in the battery pack can be improved to a certain extent.

The second pipe 210 may be configured in any suitable manner, as shown in fig. 12, in some embodiments, the second pipe 210 includes a first pipe body 210a and a second pipe body 210b fixedly connected or detachably connected to the first pipe body 210a, where the first pipe body 210a penetrates the second mounting portion 220 and extends toward two sides away from the second mounting portion 220, and an end of the first pipe body 210a away from the second pipe body 210b forms a second connection portion 211. The second pipe 210b is connected to the other end of the first pipe 210a, and a third connection portion 212 for connecting with the fourth connection portion 310 is formed at an end of the second pipe 210b away from the first pipe 210 a.

The second pipe 210 may be configured in any shape, may be linear, or may be any fold line or curve, so as to adapt to different use conditions. As shown in fig. 11 to 13, in some embodiments, the second duct 210 may extend in a horizontal direction for connection with the first duct 110 disposed horizontally as such in the first connection assembly 100 of the vehicle body, and at this time, the second duct 210 may protrude laterally from the battery pack frame and communicate with the first duct 110 disposed horizontally to save space occupation in a vertical direction of the vehicle.

As shown in fig. 18-21, in some embodiments, the second conduit 210 may be configured as an L-shape. The second pipe 210 includes a first pipe section 2111 and a second pipe section 2112 which are vertically connected, wherein the first pipe section 2111 of the first pipe 110 and the second pipe 210 may extend in a vertical direction and be connected, and the second pipe section 2112 extends in a water direction and forms a second connection portion 211 at a free end remote from the first pipe section 2111 for connection with the connection pipe 300 fixedly connected to the liquid cooling plate 21. The first mounting portion 120 fixes the first connection assembly on the body of the vehicle, and the second mounting portion 220 fixes the second joint assembly 200 on the top cover 23 of the battery pack assembly 1, and since the first pipe 110 of the second pipe 210 is vertically connected with the second pipe segment 2112, the space occupation in the horizontal direction of the vehicle is saved, therefore, the restriction conditions of different vehicle types can be satisfied, and the joint assembly is arranged at the top cover 23 of the battery pack assembly 1, so that the liquid supply of the liquid cooling plate 21 can be realized. When the second pipe 210 is linear, the second connector assembly 200 may be mounted on the side wall of the battery pack assembly 1 in the horizontal direction by the second mounting portion 220, so as to meet the mounting requirement of another type of vehicle.

A water temperature sensor 2113 may be provided in the first pipe section 2111 and/or the second pipe section 2112 to detect the temperature of the heat exchange medium flowing through the second pipe 210.

In order to achieve the sealing between the second pipe 210 and the connecting pipe 300, as shown in fig. 7 and 12, in some embodiments, a third sealing member 270 for sealing a gap between the third connecting portion 212 and the fourth connecting portion 310 is disposed at a junction between the third connecting portion 212 and the fourth connecting portion 310, where the third sealing member 270 may also be a sealing ring or a sealing strip. In addition, in order to avoid the separation of the third connecting portion 212 and the fourth connecting portion 310, a certain locking force is required between the two, and therefore, a locking member 280 for locking the third connecting portion 212 and the fourth connecting portion 310 may be further provided at the junction of the third connecting portion 212 and the fourth connecting portion 310. The locking member 280 may be configured by any suitable structure, which is well known to those skilled in the art and will not be described herein.

To facilitate the detachable connection of the second conduit 210 and the connecting conduit 300, in some embodiments, one of the third connection portion 212 and the fourth connection portion 310 is configured as a female fitting; the other is configured as a male connector. The third connecting portion 212 may be a commercially mature male-female connector, and the fourth connecting portion 310 may be a corresponding male connector, or the third connecting portion 212 may be a commercially mature male-female connector, and the corresponding fourth connecting portion 310 may be a corresponding female connector. The male and female quick connector can be an SAE series connector (SAE J2044-2009), a VDA standard connector or other connector series; of course, the third connecting portion 212 and the fourth connecting portion 310 may be designed separately, so as to achieve an effective and reliable communication and sealing function. It should be noted that the third seal 270 and the locking member 280 may be disposed on the female connector or the male connector, as the case may be.

In some embodiments, the number of first conduits 110 and second conduits 210 is at least two and corresponds one-to-one. The number of the first pipes 110 is two, the number of the second pipes 210 is also two, the two first pipes 110 and the two second pipes 210 are in one-to-one correspondence, one first pipe 110 and one second pipe 210 are connected to realize inflow of the liquid cooling plate 21, and the other first pipe 110 and one second pipe 210 are connected to realize outflow of the liquid cooling plate 21.

As shown in fig. 14 to 17, 20 and 21, the second aspect of the present disclosure provides a battery pack assembly 1, where the battery pack assembly 1 includes the above-mentioned joint structure 10, and therefore, the battery pack assembly 1 also has all the advantages of the above-mentioned joint structure 10, which is not described herein again. Wherein, the battery pack assembly 1 may include a casing surrounded by a side wall plate 22, a supporting plate and a top cover 23, and a battery module 20 and a liquid cooling plate 21 for cooling the battery module 20 arranged in the casing, the first joint assembly 100 of the joint structure 10 may be connected to a frame of a vehicle through a first mounting portion 120, and be communicated with a cooling system of the vehicle through a first pipe 110, and the second joint assembly 200 of the joint structure 10 may be arranged on the side wall plate 22 or the top cover 23 through a second mounting portion 220, and be connected with the second joint assembly 200 and the liquid cooling plate 21 through a connecting pipe 300, so as to realize communication between the cooling system of the vehicle and the liquid cooling plate 21.

The tab structure 10 of the present disclosure may be applied to various forms of quick-change battery packs, such as a module type, a CTB type, etc.

In a third aspect of the present disclosure, there is also provided a vehicle comprising a vehicle body and the battery pack assembly 1 described above, and therefore the vehicle also has all the advantages of an electric bubble pack assembly.

The joint structure 10, the battery pack assembly 1 and the vehicle disclosed by the disclosure realize the rapid, effective and reliable connection and sealing of the liquid cooling plate 21 of the battery pack and the cooling system of the vehicle by the first joint assembly 100 arranged on the vehicle body of the vehicle and the joint structure (comprising the second joint assembly 200 and the connecting pipeline 300 fixedly connected to the liquid cooling plate 21) arranged on the battery pack assembly 1, reduce one sealing structure, improve the assembly efficiency and the cost and reduce the leakage.

The joint structure 10 includes a second joint assembly 200 and a connecting pipe 300, and the vehicle body includes a first joint assembly 100, wherein the first joint assembly 100 may be mounted on the vehicle body of the entire vehicle through a first mounting portion 120 (which may be a flange, for example); the second connector assembly 200 may be mounted to a battery pack (e.g., a tray, a sealing cap, etc.) by a second mounting portion 220 (e.g., a flange as well). When the first joint assembly 100 and the second joint assembly 200 are separated, the sealing of the inner space thereof is achieved by the inner leakage preventing units (i.e., the first joint assembly 100 passes through the first pass-stop unit 130 in the first pipe 110, and the second joint assembly 200 passes through the second pass-stop unit 230 in the second pipe 210), respectively, preventing the leakage of the cooling liquid. When the battery pack is assembled on the whole vehicle, namely, when the first pipeline 110 is connected with the second pipeline 210, the leakage stopping unit in the first pipeline 110 and the second pipeline 210 can realize pipeline communication, in addition, the sealing of a gap between the first pipeline 110 and the second pipeline 210 is realized through the first sealing piece 250, and then cooling liquid can circulate and cannot leak.

In the second joint assembly 200, the second mounting portion 220 and the second pipe 210 may be injection molded as a body, or may be separately molded and then combined by welding (plastic ultrasonic welding), crimping, gluing, or the like. The second connector assembly 200 may be made of a high strength plastic material (e.g., PA66+ GF 30). The side of the second mounting portion 220 may be provided with a second seal 260, which may be a gasket, to achieve sealing requirements with a tray or other structural member (package end and package after package assembly). The second mounting part 220 is also provided with an embedded nut 221, which is used for fixing and locking the second mounting part 220 and the tray/other structural members during sealing; and secondly, the second joint assembly 200 is used for fixing and locking the second joint assembly 200 (the first joint assembly 100 and the second joint assembly 200 are connected in an assembling way). The second mounting portion 220 is generally integrally injection molded. In addition, the second mounting portion 220 may be provided with various reinforcing rib structures for increasing strength. The second stopping unit 230 includes a second seat 231, a second elastic member 232, a second slider 233, and a fixing ring 234; the on-off of the coolant can be realized when the first joint assembly 100 is inserted and pulled out. The fixing ring 234 and the second seat 231 are firmly fixed in the second pipeline, and may be integrally injection molded with the second pipeline. When the first joint assembly 100 is inserted, the top surface of the first push rod 134 of the first stopping unit 130 pushes the second slider 233 to move, compressing the spring in the second pipe 210, and opening the flow passage to realize a smooth flow passage of the cooling liquid. When the first pipe 110 of the first joint assembly 100 is pulled out, the second slider 233 moves back to the original position under the spring force, and cooperates with the fixing ring 234 to achieve sealing, preventing leakage of the coolant. The third connecting portion 212 may be integrally injection molded with the second pipe or may be separately molded. When the third connection portion 212 is formed separately, it can be assembled with the second pipe by crimping or welding, and sealing is achieved; the pulling-out force of the two is required to be more than 450N after the two are in compression joint (which can be adjusted according to actual conditions).

In addition, the third connection portion 212 may be provided with a third seal 270 and a locking member 280 for preventing the connection pipe 300 from being separated, the coolant from leaking, etc., thereby achieving a reliable seal after being assembled with the connection pipe 300 connected to the liquid cooling plate 21. It should be noted that, the third connection portion 212 may be a commercially available male-female connector (the fourth connection portion 310 of the connection pipe 300 corresponds to a male connector), and the third connection portion 212 may be a commercially available male-female connector (the fourth connection portion 310 of the connection pipe 300 corresponds to a female connector). The male and female quick connector can be an SAE series connector (SAE J2044-2009), a VDA standard connector or other connectors; the third connection 212 and the fourth connection 310 may be designed in addition to achieve an effective and reliable communication and sealing function. The third seal 270 and the locking member 280 may be provided on the female connector or on the male connector, as the case may be.

The first joint assembly 100 includes a first pipe 110, a first mounting portion 120, and a first pass-stop unit 130, which may all be made of a high-strength plastic material (e.g., PA66+ GF 30). The first mounting portion 120 is adapted to be attached to a vehicle or vehicle body after assembly. The first stopping unit 130 can realize the on-off of the cooling liquid when the first pipe 110 and the second pipe 210 are inserted and pulled out. The first push rod 134 is firmly fixed on the first pipe through the first base 131, and may be integrally injection molded. When the second pipe 210 of the second joint assembly 200 is inserted, the fixing ring 234 pushes the annular slider to move, compressing the spring, and opening the flow passage to achieve a smooth flow passage of the coolant. When the second pipe 210 is pulled out, the ring-shaped slider moves back to the original position by the spring force and seals with the sealing portion 134b of the top surface of the first push rod 134, preventing leakage of the cooling liquid.

The first and second stop units 130 and 230 may be configured to be interchangeable, or may be any other suitable form, and may be configured to enable on/off of the coolant when the first and second stop units are inserted and pulled out.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (20)

1. A joint structure, comprising:

a second joint assembly (200) for connecting with a first joint assembly (100) at a vehicle end, wherein the first joint assembly (100) comprises a first pipe (110) and a first installation part (120) connected with the first pipe (110), and a first connection part (111) is formed at one end of the first pipe (110); the second joint assembly comprises a second pipeline (210) and a second installation part (220) connected with the second pipeline (210), one end of the second pipeline (210) is provided with a second connection part (211) which can be detachably communicated with the first connection part (111), and the other end is provided with a third connection part (212); and

And one end of the connecting pipeline (300) is provided with a fourth connecting part (310) which can be detachably communicated with the third connecting part (212), and the other end of the connecting pipeline is fixedly communicated with the liquid cooling plate (21).

2. The fitting arrangement according to claim 1, wherein the second fitting assembly (200) further comprises a second stop unit (230) provided within the second conduit (210), the second stop unit (230) being adapted to releasably seal the second connection portion (211);

when the second connecting part (211) is spliced with the first connecting part (111), the second stop unit (230) can be matched and unlocked with the first stop unit (130) arranged in the first pipeline (110), so that the first pipeline (110) is communicated with the second pipeline (210).

3. The joint structure according to claim 2, characterized in that the first stop unit (130) comprises a first slider (133) and a first push rod (134);

one end of the first push rod (134) is connected with the first pipeline (110), the other end of the first push rod extends towards the opening direction of the first connecting part (111) and is provided with a sealing part (134 b), and the first slider (133) is elastically connected to the inner side wall of the first pipeline (110) and is sleeved on the first push rod (134); the first slider (133) is movable to the sealing portion (134 b) for sealing the first connection portion (111);

The second stop unit (230) comprises a second slider (233) and a fixed ring (234);

the fixed ring (234) is fixedly arranged in the second pipeline (210), the second sliding block (233) is elastically connected to the second pipeline (210), and the second sliding block (233) can move to the inner cavity of the fixed ring (234) and is used for sealing the second connecting part (211);

when the first pipeline (110) is spliced with the second pipeline (210), the first push rod (134) is abutted with the second sliding block (233), the first push rod (134) can push the second sliding block (233) to slide out of the inner cavity of the fixed ring (234), and the second connecting part (211) or the fixed ring (234) pushes the first sliding block (133) to move inwards, so that the first pipeline (110) is communicated with the second pipeline (210).

4. A joint structure according to claim 3, wherein the first stop unit (130) further comprises a first base (131) and a first elastic member (132);

the first base (131) is fixedly connected in the first pipeline (110), one end of the first push rod (134), which is far away from the sealing part (134 b), is connected with the first base (131), one end of the first elastic piece (132) is connected with the first base (131), and the first sliding block (133) is connected with the other end of the first elastic piece (132) and is connected to the inner side wall of the first pipeline (110) in a sliding manner; the first sliding block (133) can be sleeved on a push rod part (134 a) of the first push rod (134) in a clearance way, and is sleeved on the sealing part (134 b) of the first push rod (134) in a sealing way;

The second stop unit (230) further comprises a second seat (231) and a second elastic member (232);

the second base (231) is fixedly arranged in the second pipeline (210), the fixed ring (234) is close to the opening of the second connecting part (211) relative to the second base (231), one end of the second elastic piece (232) is connected with the second base (231), the second sliding block (233) is connected to the other end of the second elastic piece (232), the second elastic piece (232) can drive the second sliding block (233) to move to the inner cavity of the fixed ring (234), and the second sliding block (233) can slide out from the inner cavity of the fixed ring (234) under the pushing of the first push rod (134).

5. The joint structure according to claim 4, characterized in that the second elastic member (232) is configured as a spring;

and/or the second connecting part (211) is provided with a first sealing piece (250) for sealing a gap between the first connecting part (111) and the second connecting part (211) when the first connecting part and the second connecting part are spliced.

6. The joint structure according to claim 1, wherein the second connecting portion (211) and the third connecting portion (212) are located on opposite sides of the second mounting portion (220), respectively.

7. The joint structure according to claim 6, wherein the second joint assembly (200) further comprises a protective sleeve (240), and the protective sleeve (240) is sleeved on the second connecting portion (211) and connected to a side of the second mounting portion (220) away from the third connecting portion (212).

8. The joint structure according to claim 6, wherein a side of the second mounting portion (220) remote from the third connecting portion (212) is formed with a second seal (260) for sealing.

9. The joint structure according to claim 8, wherein the second mounting portion (220) is formed with a seal groove located in a circumferential direction of the second pipe (210), the second seal (260) being provided in the seal groove;

and/or, the second mounting part (220) is formed with a screw hole or a pre-embedded nut (221) for connection.

10. Joint structure according to claim 1, characterized in that the connecting duct (300) comprises a first connecting section (300 a) for communicating with the third connecting portion (212) and a second connecting section (300 b) perpendicularly connected to one end of the first connecting section (300 a), the second connecting section (300 b) being for communicating with the liquid cooling plate (21).

11. The joint structure according to claim 1, wherein the second pipe (210) includes a first pipe body (210 a) and a second pipe body (210 b), the first pipe body (210 a) penetrates the second mounting portion (220) and extends toward a direction away from the second mounting portion (220), one end of the first pipe body (210 a) away from the second pipe body (210 b) forms a second connection portion (211), the second pipe body (210 b) is connected to the other end of the first pipe body (210 a), and one end of the second pipe body (210 b) away from the first pipe body (210 a) forms the third connection portion (212).

12. The joint structure according to claim 1, characterized in that the second pipe (210) extends in a horizontal direction for communication with the first pipe (110) arranged in a horizontal direction; or alternatively

The second pipeline (210) comprises a first pipe section (2111) and a second pipe section (2112) vertically connected to the first pipe section (2111), the first pipe section (2111) extends along the vertical direction, the first pipe section (2111) is used for being communicated with the first pipeline (110) arranged along the vertical direction, and the second pipe section (2112) is communicated with the connecting pipeline (300).

13. The joint structure according to claim 1, characterized in that a junction of the third connecting portion (212) and the fourth connecting portion (310) is provided with a third seal (270) for sealing a gap between the third connecting portion (212) and the fourth connecting portion (310);

And/or a locking piece (280) for locking the third connecting part (212) and the fourth connecting part (310) is arranged at the joint of the third connecting part (212) and the fourth connecting part (310).

14. The joint structure according to claim 1, wherein one of the third connection portion (212) and the fourth connection portion (310) is configured as a female joint; the other is configured as a male connector.

15. The joint structure according to any one of claims 1 to 14, wherein the number of the first pipes (110) and the second pipes (210) is at least two and corresponds one to one.

16. A battery pack assembly, characterized in that the battery pack assembly (1) comprises a joint structure according to any one of claims 1-15.

17. A vehicle, characterized in that it comprises a vehicle body and a battery pack assembly (1) according to claim 16;

the vehicle body comprises a first joint assembly (100), the first joint assembly (100) comprises a first pipeline (110) and a first installation part (120) connected with the first pipeline (110), and a first connection part (111) is formed at one end of the first pipeline (110);

the first connection portion (111) is in detachable communication with the second connection portion (211).

18. The vehicle of claim 17, characterized in that the first joint assembly (100) further comprises a first through-stop unit (130) provided within the first conduit (110), the first through-stop unit (130) being adapted to releasably seal the first connection (111).

19. The vehicle according to claim 18, characterized in that the first stop unit (130) comprises a first base (131), a first elastic member (132), a first slider (133) and a first push rod (134);

the first base (131) is fixedly connected in the first pipeline (110), one end of the first push rod (134) is connected with the first base (131), the other end of the first push rod extends towards the opening direction of the first connecting part (111) and is provided with a sealing part (134 b), one end of the first elastic piece (132) is connected with the first base (131), and the first sliding block (133) is connected with the other end of the first elastic piece (132) and is connected to the inner side wall of the first pipeline (110) in a sliding manner; the first sliding block (133) is sleeved on the first push rod (134), and the first elastic piece (132) can drive the first sliding block (133) to move to the sealing part (134 b), so that the sealing part (134 b) is positioned in an inner cavity of the first sliding block (133) and used for sealing the first connecting part (111).

20. The vehicle of claim 17, characterized in that the first conduit (110) is integrally formed with the first mounting portion (120).