A battery pack cooling pipe mounting structure, a battery pack, and a vehicle.

Abstract

This application discloses a battery pack cooling pipe installation structure, a battery pack, and a vehicle, solving the technical problem of poor sealing performance between the cooling pipe connector and the battery box wall in existing technologies. The battery pack cooling pipe installation structure includes a mounting base, a primary sealing base, a secondary sealing base, a first sealing element, and a second sealing element. The mounting base includes a pressing edge and a first sleeve. The primary sealing base includes a connecting seat and a second sleeve. The secondary sealing base covers the inner through-hole of the battery pack box. The first sleeve and the second sleeve are connected so that the pressing edge and the connecting seat clamp the outer wall of the box and the first sealing element, forming a primary seal. The connecting seat and the secondary sealing base are connected so that the connecting seat and the secondary sealing base clamp the inner wall of the box and the second sealing element, forming a secondary seal. This achieves a secondary seal while ensuring the cooling pipe connector is installed in the battery pack box, improving the sealing performance of the connection between the cooling pipe connector and the battery box wall.

Description

Technical Field

[0001] This application belongs to the field of vehicle battery technology, specifically relating to a battery pack cooling pipe installation structure, a battery pack, and a vehicle. Background Technology

[0002] New energy electric vehicles are a new industry advocated by the state and represent the future direction of global automotive development. With the advancement of electric vehicle technology, the cooling requirements for electric vehicle battery packs are constantly increasing. Water cooling technology, based on liquid heat exchange, is more efficient than air cooling, resulting in a more uniform temperature inside the electric vehicle battery pack. As my country's new energy power battery heat dissipation system technology continues to advance, water-cooled products are gradually replacing air-cooled products.

[0003] When batteries are charged and discharged at high temperatures, battery expansion can easily lead to battery failure or safety issues. Power batteries operate at high currents and generate a lot of heat, so it is necessary to quickly transfer and dissipate the heat of the power battery to prevent the temperature from becoming too high and causing safety hazards. Currently, the common liquid cooling method is water cooling, which requires connecting the cooling pipe joints to the battery box wall. However, the sealing between the cooling pipe joints and the battery box wall is not good. Summary of the Invention

[0004] To address the technical problem of poor sealing between the cooling pipe joints and the battery box wall, this application provides a battery pack cooling pipe installation structure, a battery pack, and a vehicle.

[0005] In a first aspect of this application, a battery pack cooling pipe mounting structure is provided, comprising:

[0006] A cooling pipe connector, one end of which penetrates through an inner through-hole in the battery pack housing;

[0007] The mounting base includes a fixed pressing edge and a first sleeve, the pressing edge covering the outer through hole of the housing;

[0008] A primary sealing seat is fitted onto the cooling pipe joint, and the primary sealing seat includes a fixed connecting seat and a second sleeve.

[0009] A secondary sealing seat is fixedly connected to the outer wall of the cooling pipe joint and covers the inner through hole;

[0010] And the first seal and the second seal;

[0011] The first sleeve is connected to the second sleeve so that the pressing edge and the connecting seat clamp the outer wall of the box and the first sealing element to form a primary seal; the primary sealing seat is connected to the secondary sealing seat so that the connecting seat and the secondary sealing seat clamp the inner wall of the box and the second sealing element to form a secondary seal.

[0012] In some embodiments, the outer circumferential surface of the cooling pipe joint is provided with a positioning guide strip; the primary sealing seat further includes a first positioning groove that slides with the positioning guide strip.

[0013] In some embodiments, both the primary sealing seat and the secondary sealing seat are provided with one or more circumferentially arranged connecting holes; the first sealing seat and the second sealing seat are connected by a connector, which is located in the connecting hole.

[0014] In some embodiments, the primary sealing seat has an end plate near the secondary sealing seat, and the end plate has the connecting hole; the connecting hole is offset from the positioning guide strip.

[0015] In some embodiments, the secondary sealing seat has a connecting boss on the side near the primary sealing seat, and the connecting hole is provided on the connecting boss;

[0016] The end plate is located inside the cavity of the connector, and the end plate and the inner wall of the connector form a clearance groove for avoiding the connecting boss.

[0017] In some embodiments, the number of the first seal is one or more; the number of the second seal is two or more, and the two or more second seals are distributed radially in sequence.

[0018] In a second aspect of this application, a battery pack is provided, comprising:

[0019] The battery pack housing includes an outer wall and an inner wall, which together form a cavity. The outer wall has an outer through hole, and the inner wall has an inner through hole.

[0020] The aforementioned battery pack cooling pipe installation structure is installed in the battery pack housing.

[0021] In some embodiments, one end of the cooling pipe connector passes through an inner through hole in the battery pack housing, and the other end of the cooling pipe connector is located between the inner wall and the outer wall and inside the primary sealing seat.

[0022] In some embodiments, the inner wall is provided with a clearance hole corresponding to the connecting boss of the secondary sealing seat; the clearance hole is located on the periphery of the inner through hole;

[0023] The inner wall is provided with a second positioning groove that slides with the positioning guide strip.

[0024] In a third aspect of this application, a vehicle is provided, comprising: the aforementioned battery pack.

[0025] According to one or more embodiments of this application, a battery pack cooling pipe installation structure, a battery pack, and a vehicle are provided. The battery pack cooling pipe installation structure includes a mounting base, a primary sealing seat, a secondary sealing seat, a first sealing element, and a second sealing element. The mounting base includes a fixedly connected pressing edge and a first sleeve. The pressing edge covers an outer through-hole of the battery pack housing. The primary sealing seat is sleeved on the cooling pipe connector and includes a fixedly connected connecting seat and a second sleeve. The secondary sealing seat is fixedly connected to the outer wall of the cooling pipe connector and covers an inner through-hole of the battery pack housing. The first sleeve is connected to the second sleeve so that the pressing edge and the connecting seat clamp the outer wall of the housing and the first sealing element, forming a primary seal. The connecting seat is connected to the secondary sealing seat so that the connecting seat and the secondary sealing seat clamp the inner wall of the housing and the second sealing element, forming a secondary seal. By forming a primary seal on the outer side of the battery pack housing and a secondary seal on the inner side of the battery pack housing, a seal is achieved while ensuring the cooling pipe connector is installed in the battery pack housing, improving the sealing performance of the connection between the cooling pipe connector and the battery housing wall. Attached Figure Description

[0026] Figure 1 The diagram shows a schematic representation of the battery pack cooling pipe mounting structure installed in one or more embodiments of this application, viewed from a certain angle.

[0027] Figure 2 It shows Figure 1 A schematic diagram of the battery pack cooling pipe installation structure installed in the battery pack from another perspective.

[0028] Figure 3 It shows Figure 1 A structural schematic diagram of the battery pack housing from a certain perspective.

[0029] Figure 4 It shows Figure 1 A structural schematic diagram of the battery pack housing from another perspective.

[0030] Figure 5 It shows Figure 1 A schematic diagram of the installation structure of the cooling pipes for the battery pack.

[0031] Figure 6 It shows Figure 1 An exploded view of the battery pack cooling pipe installation structure installed from a certain perspective.

[0032] Figure 7 It shows Figure 2 A schematic diagram of the battery pack cooling pipe installation structure from another perspective.

[0033] Figure 8 It shows Figure 1 A schematic diagram of the structure of the primary sealing seat.

[0034] Figure 9 It shows Figure 1 A schematic diagram of the structure of the secondary sealing seat and the cooling pipe joint.

[0035] Explanation of reference numerals in the attached drawings: 100 - Battery pack cooling pipe installation structure; 110 - Cooling pipe connector; 111 - Positioning guide strip; 112 - External connector; 113 - Internal connector; 120 - Mounting base; 121 - Pressing edge; 122 - First sleeve; 123 - First sealing groove; 130 - Primary sealing seat; 131 - Connecting seat; 132 - Second sleeve; 133 - First positioning groove; 134 - End plate; 135 - Through hole; 140 - Secondary sealing seat, 141-connecting boss, 142-second sealing groove, 150-first seal, 160-second seal, 170-connecting hole, 180-connector, 200-battery pack, 210-battery pack housing, 211-outer wall, 212-inner wall, 213-outer through hole, 214-inner through hole, 215-avoidance hole, 216-second positioning groove; 300-detector connecting seat, 400-temperature detector. Detailed Implementation

[0036] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] Please see Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 9According to a first aspect of this application, a battery pack cooling pipe mounting structure 100 is provided. The battery pack cooling pipe mounting structure 100 includes a cooling pipe connector 110, a mounting base 120, a primary sealing seat 130, a secondary sealing seat 140, a first sealing element 150, and a second sealing element 160. One end of the cooling pipe connector 110 penetrates an inner through-hole 214 of the battery pack 200's housing. The mounting base 120 includes a fixedly connected pressing edge 121 and a first sleeve 122. The pressing edge 121 covers the outer through-hole 213 of the housing. The primary sealing seat 130 is sleeved on the cooling pipe connector 110. 10. The primary sealing seat 130 includes a connecting seat 131 and a second sleeve 132 that are fixedly connected; the secondary sealing seat 140 is fixedly connected to the outer wall of the cooling pipe joint 110 and covers the inner through hole 214; wherein, the first sleeve 122 is connected to the second sleeve 132 so that the pressing edge 121 and the connecting seat 131 clamp the outer wall 211 of the box and the first sealing element 150 to form a primary seal; the primary sealing seat 130 is connected to the secondary sealing seat 140 so that the connecting seat 131 and the secondary sealing seat 140 clamp the inner wall 212 of the box and the second sealing element 160 to form a secondary seal.

[0038] Thus, by forming a primary seal on the outside of the battery pack 200 housing and a secondary seal on the inside of the battery pack 200 housing, a seal is achieved while ensuring that the cooling pipe connector 110 is installed in the battery pack housing 210, thereby improving the sealing performance of the connection between the cooling pipe connector 110 and the battery housing wall.

[0039] As attached Figure 1 Appendix Figure 2 and attached Figure 3 As shown, one end of the cooling pipe connector 110 passes through the inner through hole 214 of the battery pack 200. The cooling pipe connector 110 has an inner connector 113 and an outer connector 112 at both ends. The outer diameter of the inner connector 113 is not greater than the inner diameter of the inner through hole 214, so that the inner connector 113 can pass smoothly through the inner through hole 214 during assembly.

[0040] As attached Figure 5As shown, the mounting base 120 includes a fixedly connected pressure edge 121 and a first sleeve 122. The pressure edge 121 can be a hollow hexagonal screw head or a hollow annular part. While ensuring coverage of the outer through hole 213, the inside of the pressure edge allows the cooling water pipe connector to pass through, facilitating the connection between the outer connector 112 and the pipe to be connected. The pressure edge 121 is connected to the first sleeve 122. When the pressure edge 121 is a hexagonal screw head, it can be threadedly connected to the first sleeve 122. When the pressure edge 121 is an annular part, it can be integrally formed with the first sleeve 122. The pressure edge 121 covers the outer through hole 213 of the battery pack 200's casing, and is located on the outer side of the battery pack 200's casing, away from the inner side of the battery pack 200's casing.

[0041] As attached Figure 5 and attached Figure 6 As shown, the primary sealing seat 130 is sleeved on the cooling pipe joint 110. The primary sealing seat 130 includes a connecting seat 131 and a second sleeve 132 that are fixedly connected. The connecting seat 131 and the second sleeve 132 can be welded together or integrally formed. To facilitate the smooth passage of the connecting seat 131 and the second sleeve 132 through the outer through hole 213, the inner diameter of the outer through hole 213 is not less than the outer diameter of the connecting seat 131 and the outer diameter of the second sleeve 132, ensuring that the connecting seat 131 and the second sleeve 132 can pass smoothly through the outer through hole 213.

[0042] As attached Figure 5 and attached Figure 6 As shown, to facilitate the connection between the first sleeve 122 and the second sleeve 132, in some embodiments, one of the first sleeve 122 and the second sleeve 132 is provided with an internal thread, and the other is provided with an internal thread; in some embodiments, the first sleeve 122 may be provided with an external thread, and the second sleeve 132 may be provided with an internal thread, in which case the first sleeve 122 is sleeved on the outside of the second sleeve 132, and the first sleeve 122 and the second sleeve 132 are threadedly connected; in other embodiments, the first sleeve 122 is provided with an internal thread, and the second sleeve 132 is provided with an external thread, in which case the first sleeve 122 is sleeved on the inside of the second sleeve 132, and the first sleeve 122 and the second sleeve 132 are threadedly connected.

[0043] As attached Figure 1 To be continued Figure 4 As shown, in some embodiments, the inner diameter of the outer through hole 213 is larger than the inner diameter of the inner through hole 214. While ensuring that the primary sealing seat 130 passes through the outer through hole 213, the primary sealing seat 130 can also cover the inner through hole 214 and seal the inner through hole 214 together with the secondary sealing seat 140.

[0044] As attached Figure 1 To be continued Figure 4As shown, the secondary sealing seat 140 is fixedly connected to the outer wall 211 of the cooling pipe joint 110 and covers the inner through hole 214 of the battery pack 200. The secondary sealing seat 140 is annular. In order to ensure that the secondary sealing seat 140 can seal the inner through hole 214, the outer diameter of the secondary sealing seat 140 is larger than the outer diameter of the inner through hole 214.

[0045] As attached Figure 6 and attached Figure 7 As shown, the first sealing element 150 and the second sealing element 160 can be rubber sealing rings. When the pressing edge 121 and the connecting seat 131 clamp the outer wall 211 of the box and the first sealing element 150, a primary seal is formed in the outer through hole 213 of the battery pack 200 box. The connecting seat 131 is connected to the secondary sealing seat 140. When the connecting seat 131 and the secondary sealing seat 140 clamp the inner wall 212 of the box and the second sealing element 160, a secondary seal is formed in the inner through hole 214 of the battery pack 200 box.

[0046] During assembly, the first sleeve 122 is rotated by turning the pressure edge 121, causing the pressure edge 121 to move towards the outer wall 211 of the battery pack 200, thereby fixing the pressure edge 121 and the first sleeve 122. This allows the first sealing element 150 to be clamped between the pressure edge 121 and the first sleeve 122. The second sleeve 132, the first sleeve 122, and the first sealing element 150 are used to isolate the area between the outer wall 211 and the inner wall 212 of the battery pack 200 from the outside environment, preventing liquid from entering the battery pack. Corrosion occurs at the location between the outer wall 211 of the battery pack 200's housing and the inner wall 212 of the battery pack 200's housing. By using the second sleeve 132 and the first sleeve 122, the cooling pipe connector 110 can be designed inside the second sleeve 132 and hidden between the outer wall 211 and the inner wall 212 of the battery pack 200's housing. This allows the cooling pipe connector 110 to be placed inside the second sleeve 132, preventing the cooling pipe connector 110 from protruding significantly from the outside of the battery pack 200's housing and improving the utilization of vehicle space. The connecting seat 131 and the secondary sealing seat 140 can be connected and fixed by fasteners, so that the connecting seat 131 and the secondary sealing seat 140 clamp the inner wall 212 of the housing and the second sealing element 160. The connecting seat 131, the second sealing seat and the second sealing element 160 are used to isolate the position between the outer wall 211 and the inner wall 212 of the battery pack 200 housing from the outside, so as to prevent liquid from entering the position between the outer wall 211 and the inner wall 212 of the battery pack 200 housing and causing corrosion.

[0047] As attached Figure 6 Appendix Figure 7 and attached Figure 8 As shown, in some embodiments, the outer peripheral surface of the cooling pipe connector 110 is provided with a positioning guide strip 111; the primary sealing seat 130 also includes a first positioning groove 133 that slides with the positioning guide strip 111. The positioning guide strip 111 is arranged along the outer peripheral surface of the cooling pipe connector 110, and the positioning guide strip 111 is fixedly connected to the cooling pipe connector 110, which can be glued together. In some embodiments, three positioning guides 111 may be provided. All three positioning guides 111 are parallel to the axis of the cooling pipe joint 110 and are evenly arranged along the outer circumferential surface of the cooling pipe joint 110. The three positioning guides 111 can define a plane. After the positioning guides 111 correspond to the corresponding first positioning grooves 133, the positioning guides 111 are inserted into the first positioning grooves 133, and the primary sealing seat 130 and the secondary sealing seat 140 can be docked and positioned. Before the primary sealing seat 130 and the secondary sealing seat 140 are connected and fixed, the vertical movement of the primary sealing seat 130 and the secondary sealing seat 140 can be avoided, thereby ensuring the sealing performance after the primary sealing seat 130 and the secondary sealing seat 140 are installed and fixed.

[0048] As attached Figure 6 To be continued Figure 9 As shown, to facilitate the connection between the primary sealing seat 130 and the secondary sealing seat 140, in some embodiments, both the primary sealing seat 130 and the secondary sealing seat 140 are provided with one or more circumferentially arranged connecting holes 170; the first sealing seat and the second sealing seat are connected by a connector 180, which is located in the connecting hole 170. The connector 180 can be a fastener, such as a bolt or screw, and the screw can be an internal hexagon screw. In some embodiments, the connecting hole 170 is offset from the positioning guide 111, that is, after the positioning guide 111 aligns the primary sealing seat 130 and the secondary sealing seat 140, the primary sealing seat 130 and the secondary sealing seat 140 can be connected and fixed by a fastener penetrating the connecting hole 170. By sliding the positioning guide 111 into the first positioning groove 133, the sealing seat and the cooling pipe joint 110 can be kept coaxial, thereby making the connection hole 170 of the first-stage sealing seat 130 and the connection hole 170 of the second-stage sealing seat 140 coaxially correspond. During assembly, misalignment of the connection hole 170 of the first-stage sealing seat 130 and the connection hole 170 of the second-stage sealing seat 140 can be effectively avoided, thereby greatly improving the convenience of assembling the sealing seat and the second-stage sealing seat 140.

[0049] As attached Figure 8As shown, to facilitate the connection between the primary sealing seat 130 and the secondary sealing seat 140, in some embodiments, the primary sealing seat 130 has an end plate 134 near the secondary sealing seat 140, and the end plate 134 has a connecting hole 170. The end plate 134 has a through hole 135, the inner diameter of which is larger than the outer diameter of the outer connector 112, so that the cooling pipe connector 110 and the outer connector 112 can pass through the end plate 134 and slide in the through hole 135. The connecting hole 170 is offset from the positioning guide 111, that is, while satisfying the guiding and positioning of the positioning guide 111, the primary sealing seat 130 and the secondary sealing seat 140 can also be connected and fixed by the connector 180 provided in the connecting hole 170.

[0050] As attached Figure 9 As shown, in some embodiments, a connecting boss 141 is provided on the side of the secondary sealing seat 140 near the primary sealing seat 130, and a connecting hole 170 is provided in the connecting boss 141; the end plate 134 is located in the cavity of the connecting seat 131, and the end plate 134 and the inner wall 212 of the connecting seat 131 form a clearance groove for avoiding the connecting boss 141.

[0051] As attached Figure 9 As shown, to ensure a certain thread depth in the connecting hole 170 and facilitate the connection between the primary sealing seat 130 and the secondary sealing seat 140, in some embodiments, a connecting boss 141 is provided on the side of the secondary sealing seat 140 near the primary sealing seat 130, and the connecting hole 170 is located on the connecting boss 141. In this case, the connecting boss 141 protrudes from the side of the secondary connecting seat 131 near the primary connecting seat 131. When the primary sealing seat 130 and the secondary sealing seat 140 are connected, the connecting member 180 can be a bolt. By inserting the connecting member 180 into the threaded hole in the connecting boss 141, the primary sealing seat 130 and the secondary sealing seat 140 are connected and fixed. In some embodiments, there are three connecting bosses 141, which are offset from the positioning guide strip 111. That is, while satisfying the guiding and positioning process of the positioning guide strip 111, the primary sealing seat 130 and the secondary sealing seat 140 can also be connected and fixed by the connecting member 180 located in the connecting hole 170.

[0052] As attached Figure 6 To be continued Figure 9As shown, to avoid interference during the connection of the primary sealing seat 130 and the secondary sealing seat 140, in some embodiments, the end plate 134 is located inside the cavity of the connecting seat 131, and the end plate 134 and the inner wall 212 of the connecting seat 131 form a clearance groove. This clearance groove allows for precise clearance of the connecting boss 141, preventing interference between components. The connecting boss 141 and the positioning guide 111 are misaligned. Through the sliding engagement of the positioning guide 111 and the first positioning groove 133, the cooling pipe connector 110 can be guided and limited, ensuring that the cooling pipe connector 110 and the inner through hole 214 remain coaxial, and that the connecting boss 141 and the clearance hole 215 maintain precise positioning.

[0053] As attached Figure 6 To be continued Figure 9 As shown, in some embodiments, the number of first sealing elements 150 is more than one; the first sealing element 150 can be a rubber sealing ring. In order to facilitate the installation of the first sealing element 150, a first sealing groove 123 is provided on the side of the pressing edge 121 near the first sleeve 122. The first sealing element 150 can be embedded in the first sealing groove 123. After the first sleeve 122 is connected to the second sleeve 132, the pressing edge 121 and the connecting seat 131 clamp the outer wall 211 of the box and the first sealing element 150 to form a primary seal.

[0054] As attached Figure 6 To be continued Figure 9As shown, in some embodiments, there are two or more second seals 160, which are arranged radially in sequence. The number of second seals 160 is two, and each second seal 160 can be a rubber sealing ring. The two second seals 160 are arranged radially in sequence and are concentrically positioned. To facilitate the installation of the second seals 160, two second sealing grooves 142 are provided on the side of the secondary sealing seat 140 near the primary sealing seat 130. The second seals 160 can be embedded in the corresponding second sealing grooves 142. After the primary sealing seat 130 and the secondary sealing seat 140 are connected, the connecting seat 131 and the secondary sealing seat 140 clamp the inner wall 212 of the housing and the second seal 160, forming a secondary seal. Two second seals 160 seal the space between the secondary seal seat 140 and the inner wall 212 of the battery pack housing 210, achieving a double-layer seal and effectively improving the sealing effect between the cooling pipe joint 110 and the inner wall 212 of the battery pack housing 210. Furthermore, the interaction between the primary seal seat 130 and the secondary seal seat 140 clamps the two second seals 160 between the inner wall 212 of the battery pack housing 210 and the secondary seal seat 140. When the secondary seal seat 140 exerts a compressive effect on the two second seals 160, the stress applied to the inner wall 212 of the battery pack housing 210 is offset by the primary seal seat 130. During assembly, this effectively prevents deformation of the inner wall 212 of the battery pack housing 210, further enhancing the sealing effect between the cooling pipe joint 110 and the inner wall 212 of the battery pack housing 210.

[0055] Please see Figure 1 and attached Figure 2 According to a second aspect of this application, a battery pack 200 is provided, including a battery pack housing 210 and the aforementioned battery pack cooling pipe mounting structure 100. The battery pack housing 210 includes an outer wall 211 and an inner wall 212, which together form a cavity. An outer through hole 213 is provided on the outer wall 211, and an inner through hole 214 is provided on the inner wall 212. The aforementioned battery pack cooling pipe mounting structure 100 is mounted on the battery pack housing 210.

[0056] As attached Figure 1 and attached Figure 2As shown, in some embodiments, one end of the cooling pipe connector 110 penetrates the outer through-hole 213 of the battery pack 200 housing, and the other end of the cooling pipe connector 110 is located between the inner wall 212 and the outer wall 211 and is disposed inside the primary sealing seat 130. The other end of the cooling pipe connector 110 is the end with the external connector 112. By placing the cooling pipe connector 110 inside the primary sealing seat 130, the external connector 112 can be hidden between the inner wall 212 and the outer wall 211 of the battery pack housing 210. This allows the external connector 112 of the cooling pipe connector 110 to communicate with other pipes within the sealing seat, preventing the cooling pipe connector 110 from protruding significantly from the outer wall 211 of the battery pack housing 210 and improving the utilization rate of vehicle space.

[0057] Please see Figure 1 and attached Figure 2 In some embodiments, the inner wall 212 has a clearance hole 215 corresponding to the connecting boss 141 of the secondary sealing seat 140; the clearance hole 215 is located around the inner through hole 214; the inner wall 212 has a second positioning groove 216 that slides with the positioning guide 111. This can guide and limit the cooling pipe connector 110, so that the cooling pipe connector 110 and the inner through hole 214 remain coaxial, and the connecting boss 141 and the clearance hole 215 can maintain precise positioning.

[0058] Therefore, during the assembly of the primary sealing seat 130 and the secondary sealing seat 140, the cooling pipe connector 110 is inserted into the inner through hole 214, so that the positioning guide 111 is inserted into the second positioning groove 216, and the connecting boss 141 is inserted into the clearance hole 215. Then, the primary sealing seat 130 is fitted onto the surface of the cooling pipe connector 110, and the positioning guide 111 is inserted into the first positioning groove 133, so that the connecting hole 170 of the connecting seat 131 and the connecting boss 141 are coaxial. Then, an internal hex screw is threaded through the connecting hole 170 and connected to the inside of the connecting boss 141, and the internal hex screw is tightened with an internal hex wrench. The cooling pipe connector 110 is fixed to the inner wall 212 of the battery pack housing 210 by the primary sealing seat 130 and the secondary sealing seat 140. The interaction between the primary sealing seat 130 and the secondary sealing seat 140 clamps the second sealing element 160 between the inner wall 212 and the secondary sealing seat 140. When the secondary sealing seat 140 exerts a squeezing effect on the second sealing element 160, the stress applied to the inner wall 212 of the battery pack housing 210 is offset by the primary sealing seat 130. During assembly, this effectively prevents deformation of the inner wall 212 of the battery pack housing 210 and improves the sealing effect between the cooling pipe connector 110 and the inner wall 212 of the battery pack housing 210.

[0059] During assembly of the mounting base 120 and the primary sealing base 130, the hollow hexagonal screw head is turned to rotate the first sleeve 122, causing the hollow hexagonal screw head to move closer to the outer wall 211. This causes the first sealing element 150 to be clamped between the hollow hexagonal screw head and the first sleeve 122. The second sleeve 132, the first sleeve 122, and the first sealing element 150 isolate the outer wall 211 from the outside by means of the second sleeve 132 and the first sleeve 122. The second sleeve 132 and the first sleeve 122 allow the outer connector 112 to be designed inside the second sleeve 132 and hidden between the outer wall 211 and the inner wall 212. This allows the connection point of the outer connector 112, such as the connection point between the outer connector 112 and the cooling water pipe, to be placed inside the second sleeve 132, avoiding excessive protrusion from the outer side of the outer wall 211.

[0060] Please see Figure 5 and attached Figure 7 According to a third aspect of this application, a vehicle is provided, including the battery pack 200 described above. The battery pack 200 is further provided with a detector connector 300 connector 131 and a temperature detector 400; the detector connector 300 connector 131 is disposed at a cooling pipe joint 110; the temperature detector 400 is disposed at the detector connector 300 connector 131. The detector connector 300 and connector 131 are located on the surface of the cooling pipe connector 110 and on the side of the secondary sealing seat 140 near the inner wall 212 of the housing. The temperature detector 400 is connected to the detector connector 300 and connector 131. In some embodiments, the detector connector 300 and connector 131 are threadedly connected. The detector connector 300 and connector 131 have a connecting end for connecting the temperature detector 400, and the connecting end has an internal thread. The temperature detector 400 has an external thread corresponding to the external thread of the connecting end. The external thread end of the temperature detector 400 extends into the connecting end and is then threadedly connected to the detector connector 300 and connector 131, thereby realizing the installation of the temperature detector 400 and the detector connector. The temperature detector 400 can be used to detect the temperature of the coolant flowing inside the cooling pipe connector 110. The temperature detector 400 is electrically connected to the vehicle controller, and the detection data is uploaded to the vehicle controller. The controller analyzes the data to obtain the status of the cooling pipe connector 110 in a timely manner.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack cooling pipe installation structure, characterized in that, include: A cooling pipe connector, one end of which penetrates through an inner through-hole in the battery pack housing; The mounting base includes a fixed pressing edge and a first sleeve, the pressing edge covering the outer through hole of the housing; A primary sealing seat is fitted onto the cooling pipe joint, the primary sealing seat comprising a fixed connecting seat and a second sleeve; A secondary sealing seat is fixedly connected to the outer wall of the cooling pipe joint and covers the inner through hole; And the first seal and the second seal; The first sleeve is connected to the second sleeve so that the pressing edge and the connecting seat clamp the outer wall of the box and the first sealing element to form a primary seal; the primary sealing seat is connected to the secondary sealing seat so that the connecting seat and the secondary sealing seat clamp the inner wall of the box and the second sealing element to form a secondary seal.

2. The battery pack cooling pipe installation structure according to claim 1, characterized in that, The outer circumferential surface of the cooling pipe joint is provided with a positioning guide strip; the primary sealing seat also includes a first positioning groove that slides with the positioning guide strip.

3. The battery pack cooling pipe installation structure according to claim 2, characterized in that, Both the primary sealing seat and the secondary sealing seat are provided with one or more connecting holes arranged circumferentially; the first sealing seat and the second sealing seat are connected by a connector, which is located in the connecting hole.

4. The battery pack cooling pipe installation structure according to claim 3, characterized in that, The primary sealing seat has an end plate near the secondary sealing seat, and the end plate has the connecting hole; the connecting hole is offset from the positioning guide strip.

5. The battery pack cooling pipe installation structure according to claim 4, characterized in that, The secondary sealing seat has a connecting boss on the side near the primary sealing seat, and the connecting hole is located on the connecting boss; The end plate is located inside the cavity of the connector, and the end plate and the inner wall of the connector form a clearance groove for avoiding the connecting boss.

6. The battery pack cooling pipe installation structure according to any one of claims 1-4, characterized in that, The number of the first seal is one or more; the number of the second seal is two or more, and the two or more second seals are distributed radially in sequence.

7. A battery pack, characterized in that, include: The battery pack housing includes an outer wall and an inner wall, which together form a cavity. The outer wall has an outer through hole, and the inner wall has an inner through hole. The battery pack cooling pipe mounting structure according to any one of claims 1-6 is installed in the battery pack housing.

8. The battery pack according to claim 7, characterized in that, One end of the cooling pipe connector passes through the inner through hole of the battery pack housing, and the other end of the cooling pipe connector is located between the inner wall and the outer wall and inside the primary sealing seat.

9. The battery pack according to claim 7, characterized in that, The inner wall is provided with a clearance hole corresponding to the connecting boss of the secondary sealing seat; the clearance hole is located on the periphery of the inner through hole. The inner wall is provided with a second positioning groove that slides with the positioning guide strip.

10. A vehicle, characterized in that, include: The battery pack according to any one of claims 7-9.

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