Pipeline joint and pipeline system for energy storage liquid cooling pipe

Abstract

The utility model relates to a pipeline joint for an energy storage liquid cooling pipe and a pipeline system. The pipeline joint for the energy storage liquid cooling pipe comprises a connecting sleeve; the fixing seat comprises a water passing plate, a first through hole is formed in the center of the water passing plate, and a second through hole is formed in the water passing plate; at least part of the rotating joint is located between the fixed seat and the connecting sleeve, the axial direction of the rotating joint is defined as the first direction, the rotating joint comprises a water passing disc, a first water passing hole is formed in the position, corresponding to the first through hole, of the water passing disc, and a second water passing hole is formed in the position beside the first water passing hole; the rotary joint is arranged to rotate relative to the fixed seat, so that the rotary joint at least has the following first state and second state: in the first state, at least part of the second water passing hole corresponds to and communicates with the second through hole; and in the second state, the second water passing hole corresponds to the closed position, located beside the second through hole, on the water passing plate. Flow adjustment can be achieved, subsequent control over the temperature of the battery cell is facilitated, and the whole adjustment process is convenient and fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline connection, in particular to a pipeline joint for an energy storage liquid cooling pipe and a pipeline system. BACKGROUND

[0002] At present, in industrial and commercial and large energy storage pipeline systems, water system pressure drop can cause large fluctuations in water flow of each PACK (battery pack), mainly in the vertical direction, the flow deviation of the highest and lowest PACK is large, which can easily cause uneven pipeline flow in the vertical direction, for example, the flow of PACK becomes smaller and smaller as it goes up, and the flow of PACK becomes larger and larger as it goes down. It also causes inconsistent temperatures of energy storage batteries during charging and discharging, which is not conducive to controlling the temperature difference of the battery cells. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a pipeline joint for an energy storage liquid cooling pipe with adjustable flow size.

[0004] The present application provides a pipeline joint for an energy storage liquid cooling pipe, which is used to connect adjacent first and second pipelines, the pipeline joint comprising: a connecting sleeve for connecting with the first pipeline; a fixed seat for connecting with the second pipeline, the fixed seat being coaxially arranged with the connecting sleeve, and the fixed seat comprising a water passing plate, a first through hole being formed in the center of the water passing plate, and a second through hole being formed in the water passing plate beside the first through hole; a rotary joint being at least partially located between the fixed seat and the connecting sleeve, and being coaxially arranged with the fixed seat, the axial direction of the rotary joint being defined as the first direction, the rotary joint comprising a water passing disc being arranged side by side with the water passing plate along the first direction, the water passing disc being provided with a first water passing hole at a position corresponding to the first through hole, and being provided with a second water passing hole at a position beside the first water passing hole, the rotary joint being arranged to be rotatable relative to the fixed seat, thereby having at least the following first and second states: in the first state, at least part of the second water passing hole corresponds to and communicates with the second through hole; in the second state, the second water passing hole corresponds to a closed position beside the second through hole on the water passing plate.

[0005] In one embodiment, the second through hole has at least two, and is uniformly distributed around the first through hole on the circumferential direction of the water passing plate, the position between any two adjacent second through holes on the water passing plate being the closed position, the number of the second water passing holes being equal to the number of the second through holes, each of the second water passing holes being in communication with the corresponding second through hole when the rotary joint is in the first state, and each of the second water passing holes corresponding to the closed position when the rotary joint is in the second state.

[0006] In one of the embodiments, the second through holes and the second water passing holes are all three, and the cross-sectional area of each of the second water passing holes is equal, and the central angle between two adjacent second water passing holes is 120°.

[0007] In one of the embodiments, the outer peripheral wall of the rotary joint is provided with at least a first mark part and a second mark part, the first mark part and the second mark part are arranged along the circumferential direction of the rotary joint, the outer peripheral wall of the connecting sleeve is provided with a reference part, when the first mark part corresponds to the reference part, the rotary joint is in a first state; when the second mark part corresponds to the reference part, the rotary joint is in a second state.

[0008] In one of the embodiments, the reference part, the first mark part and the second mark part all extend along the first direction, and are at least one of a protrusion, a groove and a mark line.

[0009] In one of the embodiments, the rotary joint further comprises a rotary ring which is annular in cross section and coaxially arranged with the water passing disc, the water passing disc is provided with an insertion slot extending along the first direction on the side facing the connecting sleeve for the insertion of the rotary ring, and the first mark part and the second mark part are both located on the outer peripheral wall of the water passing disc.

[0010] In one of the embodiments, one of the outer peripheral wall of the rotary ring and the inner peripheral wall of the insertion slot is formed with a protrusion, and the other is provided with a sliding groove with one end being open for the protrusion to slide into the sliding groove along the first direction, and the protrusion extends along the first direction.

[0011] In one of the embodiments, the sliding groove is located on the outer peripheral wall of the rotary ring, the sliding groove and the protrusion are both in the shape of a triangular prism, and the opening of the sliding groove is located on the edge of the side of the rotary ring close to the fixed seat;

[0012] In one of the embodiments, the first mark part and the second mark part are equal in number to the second water passing holes, and the first mark part and the second mark part are both at least two, and are alternately and uniformly arranged along the circumferential direction of the water passing disc, at least part of the third mark part is located between the corresponding first mark part and the reference part along the first direction, and is aligned with the corresponding first mark part, the second mark part and the first mark part other than the first mark part corresponding to the reference part each correspond to a fourth mark part, the fourth mark part is provided on the outer peripheral wall of the rotary ring, and at least part of the fourth mark part is located between the water passing disc and the reference part.

[0013] In one of the embodiments, the two edges of the rotating ring spaced along the first direction are defined as first edges, the axial dimension of the rotating ring is L, the depth of the slot along the first direction is L1, and the length of the slide groove or the protrusion on the rotating ring is L2, and the distances L1, L2 and L satisfy: L1=1 / 3L, L2=2 / 3L.

[0014] And / or, the part of the slide groove or the protrusion on the rotating ring located outside the water tray is defined as a third mark part, at least part of the third mark part is located between the reference part and the first mark part along the first direction and is aligned with the first mark part, and a fourth mark part is arranged on the outer peripheral wall of the rotating ring at a position corresponding to the second mark part, at least part of the fourth mark part is located between the water tray and the reference part along the first direction.

[0015] The application also discloses a pipeline system, which comprises a pipeline joint, a secondary pipeline and a tertiary pipeline, the secondary pipeline is connected with the tertiary pipeline through the pipeline joint, the pipeline joint is the pipeline joint in any one of the embodiments, the secondary pipeline is the first pipeline, and the tertiary pipeline is the second pipeline.

[0016] Compared with the prior art, in the pipeline joint provided by the application, the rotating joint can be switched between the first state and the second state by rotating the rotating joint. In the first state (e.g., gear 1) of the rotating joint, the second through hole corresponds to and communicates with the second water passing hole, and the first through hole and the first water passing hole always correspond to and communicate with each other, so that the water passing area of the water passing plate of the fixed seat is maximum. In the second state (e.g., gear 2) of the rotating joint, the second water passing hole corresponds to the closed position beside the second through hole on the water passing plate, that is, the second water passing hole is arranged in a staggered manner with the second through hole, and at this time, only the first through hole corresponds to and communicates with the first water passing hole, so that the water passing area of the water passing plate of the fixed seat is reduced. Therefore, the size of the flow can be adjusted by rotating the rotating joint, and the whole adjustment process is convenient and fast, and the needs of users can be better met. In addition, the flow can be adjusted, the flow into the battery pack can be controlled, and the temperature of the battery cell can be controlled subsequently. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a perspective view of the pipeline joint of one embodiment of the application.

[0019] Figure 2 is a sectional view of the rotary joint in the first state according to an embodiment of the present application;

[0020] Figure 3 is a perspective exploded structural schematic view of Figure 1

[0021] Figure 4 is a structural schematic view of the water passing disc in Figure 1

[0022] Figure 5 is a structural schematic view of another angle of Figure 4

[0023] Figure 6 is a structural schematic view of the rotary ring in Figure 1

[0024] Reference signs: 1, fixed seat; 11, water passing plate; 111, first through hole; 112, second through hole; 12, annular sleeve; 2, connecting sleeve; 21, reference part; 22, recessed area; 3, rotary joint; 31, water passing disc; 311, first water passing hole; 312, second water passing hole; 313, first marking part; 314, second marking part; 315, insertion slot; 3151, convex strip; 316, annular plate; 32, rotary ring; 320, first edge; 321, sliding slot; 3211, third marking part; 322, fourth marking part. DETAILED DESCRIPTION

[0025] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the scope of the present application, and it will be apparent to those skilled in the art that similar modifications of the present application can be made without departing from the scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0026] ​​​​It is to be understood that where the terms "fixed" or "attached" are used herein with respect to one element to another, the elements can be directly connected to one another or intervening elements can be present. Where, for example, an element over another means that the elements can be directly or indirectly in contact with each other. Where an element is referred to as being "connected", "coupled", "attached" or "joined" to another element, it can be directly connected, coupled, attached, or joined to the other element, or intervening elements can be present. As used herein the terms "vertical", "horizontal", "upper", "lower", "left", "right", "side", "top", "bottom", and the like as can be used herein, merely describe example orientations and do not limit the locations of the various structures described herein to the orientations described. These orientation terms are used for convenience and do not imply limitations on the embodiments disclosed herein, for example, "upper" and "lower" can be interchangeable with respect to the example orientations described herein and used in various embodiments. The terms "first", "second", "third", etc. are used herein only to describe different instances of an element and do not imply a relative importance of the elements. Thus, the features defined with "first", "second" etc. can include one or more of the features. The term "plurality" means at least two, for example, two, three, etc., unless expressly specified otherwise.

[0027] The terms "first", "second", "third", etc. are used herein only to describe different instances of an element and do not imply a relative importance of the elements. Thus, the features defined with "first", "second" etc. can include one or more of the features. The term "plurality" means at least two, for example, two, three, etc., unless expressly specified otherwise.

[0028] In this application, unless specifically stated and limited otherwise, the terms "on", "under", "above", "over", and "below" can refer to the relative positioning of elements to each other, and can include indirect positioning through intervening elements. In addition, the terms "on", "above", and "over" can refer to the relative vertical positioning of elements to each other, and can include direct positioning or indirect positioning through intervening elements. In addition, the terms "on", "above", and "over" can refer to the relative horizontal positioning of elements to each other, and can include direct positioning or indirect positioning through intervening elements. In addition, the terms "under", "below", and "underneath" can refer to the relative vertical positioning of elements to each other, and can include direct positioning or indirect positioning through intervening elements. In addition, the terms "under", "below", and "underneath" can refer to the relative horizontal positioning of elements to each other, and can include direct positioning or indirect positioning through intervening elements.

[0029] It is to be understood that "axial arrangement" refers to the overall arrangement direction along the axial direction, including but not limited to axial extension, which can be at an angle with the axial direction.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. All publications, patent applications, patents, and other references mentioned in this specification are herein incorporated by reference in their entirety for the purpose of describing and disclosing, for example, the methodologies described in such publications that might be used in connection with the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0031] See Figures 1-6The application provides a pipe joint for an energy storage liquid cooling pipe. The pipe joint is used to connect adjacent first and second pipes.

[0032] As shown in Figure 1 and Figure 2 , the pipe joint comprises a fixing seat 1, a connecting sleeve 2 and a rotating joint 3. The connecting sleeve 2 has a ring-shaped cross section and is used to connect the first pipe. The fixing seat 1 is used to connect the second pipe and is coaxially arranged with the connecting sleeve 2. The fixing seat 1 comprises a water passing plate 11, the center of which is provided with a first through hole 111, and the water passing plate 11 is further provided with a second through hole 112 located beside the first through hole 111.

[0033] As shown in Figure 1 and Figure 2 , the rotating joint 3 is at least partially located between the fixing seat 1 and the connecting sleeve 2, the rotating joint 3 is coaxially arranged with the fixing seat 1, the axial direction of the rotating joint 3 is defined as the first direction A, the rotating joint 3 comprises a water passing disc 31 which is arranged in parallel with the water passing plate 11 along the first direction A, the water passing disc 31 is provided with a first water passing hole 311 at a position corresponding to the first through hole 111, and is further provided with a second water passing hole 312 at a position beside the first water passing hole 311, and the rotating joint 3 is arranged to be rotatable relative to the fixing seat 1, thereby having at least the following first state and second state: in the first state, at least part of the second water passing hole 312 corresponds to and communicates with the second through hole 112; in the second state, the second water passing hole 312 corresponds to a closed position beside the second through hole 112 on the water passing plate 11.

[0034] It can be understood that the rotating joint 3 can be switched between the first state and the second state by rotating the rotating joint 3. In the first state (e.g. 1st gear) of the rotating joint 3, the second through hole 112 corresponds to and communicates with the second water passing hole 312, and since the first through hole 111 and the first water passing hole 311 always correspond and communicate, at this time, the water passing area of the water passing plate 11 of the fixing seat 1 is the largest. When the rotating joint 3 is in the second state (e.g. 2nd gear), the second water passing hole 312 corresponds to a closed position beside the second through hole 112 on the water passing plate 11, that is, the second water passing hole 312 is arranged in a staggered manner with the second through hole 112, at this time, only the first through hole 111 corresponds to and communicates with the first water passing hole, and the flow area of the water passing plate 11 of the fixing seat 1 is reduced. Therefore, by rotating the rotating joint 3, the flow can be adjusted, the whole adjustment process is convenient and fast, and the user's needs can be better met. In addition, the flow can be adjusted, the flow into the battery pack can be controlled, and the temperature of the battery cell can be controlled in the subsequent process.

[0035] In addition, the size of the adjacent first and second pipes can be realized by adjusting the size of the fixing seat 1 and the connecting sleeve 2.

[0036] The connecting sleeve 2 is connected to the three-way valve of the second pipeline. It can be connected by plug-in or by thread. Specifically, the inner circumferential wall of the connecting sleeve 2 is provided with internal threads.

[0037] The aforementioned first through hole 111, second through hole 112, first water passage hole 311 and second water passage hole 312 can be circular holes, square holes, such as hexagonal holes, or holes of other shapes.

[0038] In other embodiments, there is one second through hole 112. In this embodiment, as... Figure 3 As shown, there are at least two second through holes 112, which are evenly distributed around the first through hole 111 along the circumference of the water-passing plate 11. The positions between two adjacent second through holes 112 on the water-passing plate 11 are all closed positions. The number of second water passage holes 312 is equal to the number of second through holes 112. When the rotary joint 3 is in the first state, at least a portion of each second water passage hole 312 is connected to the corresponding second through hole 112. When the rotary joint 3 is in the second state, each water passage hole corresponds to a closed position.

[0039] It is understandable that when the rotary joint 3 is in the first state, each of the second through holes 112 is connected to the corresponding second water passage hole 312. Since the first through hole 111 and the first water passage hole 311 are always connected, the water flow area of ​​the water passage plate 11 of the fixed base 1 is the largest at this time.

[0040] For example, there are three second through holes 112 and three second water passage holes 312, and the cross-sectional area of ​​each second water passage hole 312 is equal, and the central angle between two adjacent second water passage holes 312 is 120°. In other embodiments, there may be two or more second through holes 112 and two water passage holes 312.

[0041] like Figures 3-5 As shown, at least a first marking portion 313 and a second marking portion 314 are provided on the outer peripheral wall of the rotary joint 3. The first marking portion 313 and the second marking portion 314 are arranged at intervals along the circumference of the rotary joint 3. A reference portion 21 is provided on the outer peripheral wall of the connecting sleeve 2. When the first marking portion 313 is in a state corresponding to the reference portion 21, the rotary joint 3 is in a first state; when the second marking portion 314 is in a state corresponding to the reference portion 21, the rotary joint 3 is in a second state.

[0042] Understandably, the arrangement of the first marking part 313, the second marking part 314 and the reference part 21 makes it easier to identify the position of the rotary joint 3 (i.e. the state of the rotary joint 3), which is more intuitive and can be accurately adjusted to the required position according to needs.

[0043] Further, the number of the first marking portions 313 and the second marking portions 314 is equal to the number of the second water passing holes 312, i.e. each of the second water passing holes 312 corresponds to one of the first marking portions 313. Specifically, the first marking portions 313 and the second marking portions 314 are at least two, and are arranged alternately and uniformly along the circumference of the water passing disc 31. That is, there is one of the second marking portions 314 between two adjacent first marking portions 313, and the second marking portion 314 corresponds to the closed area on the water passing plate. In the embodiment, the first marking portions 313 and the second marking portions 314 are three.

[0044] The reference portion 21, the first marking portions 313 and the second marking portions 314 all extend along the first direction A, and are at least one of a protrusion, a groove and a marking line.

[0045] For example, the reference portion 21 is a marking line, and the first marking portions 313 and the second marking portions 314 are grooves. In order to distinguish the first marking portions 313 and the second marking portions 314, a protrusion or a strip groove or a marking line can be arranged in the groove corresponding to the first marking portion 313 or the groove corresponding to the second marking portion 314. In the embodiment, a strip groove is arranged in the groove corresponding to the first marking portion 313.

[0046] In other embodiments, the reference portion 21 can also be a groove or a protrusion, and the first marking portions 313 and the second marking portions 314 can be both protrusions or marking lines. In addition, the first marking portions 313 and the second marking portions 314 can also have different structures, for example, the first marking portions 313 are protrusions, and the second marking portions 314 are grooves or marking lines; or the first marking portions 313 are marking lines, and the second marking portions 314 are grooves or protrusions, and so on.

[0047] In order to facilitate the rotation of the rotating joint 3, a convex pattern is formed on the outer circumferential wall of the water passing disc 31, and the outer circumferential wall of the water passing disc 31 is used as a rotating handle.

[0048] In other embodiments, the rotating joint 3 can also be in the form of an integral piece. In the embodiment, as shown in Figure 2 、 Figure 3 and Figure 6As shown, the rotary joint 3 further comprises a rotary ring 32 coaxially arranged with the water passage disc 31. The rotary ring 32 has a ring-shaped cross section. The water passage disc 31 is provided with a slot 315 extending along the first direction A on the side facing the connecting sleeve 2 for insertion of the rotary ring 32, so that the rotary ring 32 is mounted with the water passage disc 31 through the slot 315 and the insertion of the rotary ring 32. In the embodiment, the first mark 313 and the second mark 314 are both located on the outer peripheral wall of the water passage disc 31. The axis of the first mark 313, the center of the second water passage hole 312 and the center of the first water passage hole 311 are located on the same straight line when projected on the same plane along the first direction A.

[0049] In order to facilitate the insertion of the rotary ring 32 into the slot 315, one of the outer peripheral wall of the rotary ring 32 and the inner peripheral wall of the slot 315 is provided with a protrusion 3151, and the other is provided with a sliding groove 321 with one end open for the protrusion 3151 to slide into along the first direction A.

[0050] In the embodiment, as shown in Figure 2 and Figure 4 , the sliding groove 321 is located on the outer peripheral wall of the rotary ring 32, and the protrusion 3151 is located on the inner peripheral wall of the slot 315. Both the sliding groove 321 and the protrusion 3151 are in the shape of a triangular prism, and the opening of the sliding groove 321 is located on the edge of the rotary ring 32 close to the fixed seat 1. In other embodiments, the protrusion 3151 is located on the outer peripheral wall of the rotary ring 32, and the sliding groove 321 is located on the inner peripheral wall of the slot 315, and the opening of the sliding groove 321 is located on the edge of the slot 315 close to the connecting sleeve 2.

[0051] As shown in Figure 2 and Figure 6 , both edges of the rotary ring 32 spaced apart along the first direction A are defined as the first edge 320. The axial dimension of the rotary ring 32 is L, the depth of the slot 315 along the first direction A is L1, the length of the sliding groove 321 on the rotary ring 32 is L2, and the distances L1, L2 and L satisfy the condition: L1 = 1 / 3L, L2 = 2 / 3L. That is, when the rotary ring 32 is inserted into the slot 315, part of the rotary ring 32 is located outside the water passage disc 31.

[0052] In addition, the thickness of the water passage disc 31 along the first direction A is L5, and L5 = 2 / 3L.

[0053] In order to realize the connection between the connecting sleeve 2 and the rotary joint 3, in the embodiment, as shown in Figure 2 , the inner peripheral wall of the connecting sleeve 2 is provided with a recess 22 for insertion of the side of the rotary ring 32 away from the water passage disc 31. In other embodiments, the rotary ring 32 is sleeved on the periphery of the connecting sleeve 2.

[0054] Further, a part of the sliding groove 321 on the rotating ring 32 located outside the water tray 31 is defined as a third mark part 3211. Along the first direction A, at least part of the third mark part 3211 is located between the reference part 21 and the corresponding first mark part 313, and is aligned with the corresponding first mark part 313.

[0055] As shown in Figure 1 , Figure 3 and Figure 6 , the second mark part 314 and the first mark part 313 except the one corresponding to the reference part 21 each correspond to a fourth mark part 322. The fourth mark part 322 is provided on the outer circumferential wall of the rotating ring 32, and at least part of the fourth mark part 322 is located between the water tray 31 and the reference part 21 along the first direction A.

[0056] Exemplarily, when the second water passing hole 312, the first mark part 313 and the second mark part 314 each have three, the fourth mark part 322 has five, and the five fourth mark parts 322 and the one third mark part 3211 are uniformly distributed along the circumference of the rotating ring 32, and the central angle between two adjacent fourth mark parts 322 is 60°, and the central angle between the third mark part 3211 and the adjacent fourth mark part 322 is 60°.

[0057] It can be understood that when the rotating joint 3 is in the first state (e.g. gear 1), the flow area of the water passing plate 11 is the largest, when the rotating joint 3 is rotated counterclockwise by 60°, the second mark part 314 is aligned with the reference part 21, the rotating joint 3 is in the second state (e.g. gear 2), and the flow area of the water passing plate 11 is smaller.

[0058] The fourth mark part 322 extends along the first direction A, and is one of a protrusion, a groove and a mark line. In the embodiment, the length of the third mark part 3211 along the first direction A is L3, L3 = 1 / 3L, and the distance between the fourth mark part 322 and the first edge 320 on the corresponding side is L4, L4 = 1 / 3L.

[0059] Further, as shown in Figure 2 and Figure 5As shown, the periphery of the water overflow plate 31 extends in a direction away from the connecting sleeve 2 to form an annular plate 316, which surrounds a cavity in which the water flow plate 11 is located, and the water overflow plate 31 is rotatably constrained on the annular plate 316. In addition, the fixed seat 1 further comprises an annular sleeve 12, which surrounds a plug-in port connected to the second pipeline. At least part of the annular sleeve 12 is located on the side of the water flow plate 11 away from the connecting sleeve 2. Exemplarily, the annular sleeve 12 is formed by extending the periphery of the water flow plate 11 in the first direction A away from the connecting sleeve 2. In other embodiments, the annular sleeve 12 can also be fixedly connected to the side of the water flow plate 11 away from the connecting sleeve 2.

[0060] In addition, the size of the rotary joint 3 can also be adjusted according to actual needs.

[0061] The application further discloses a pipeline system. The pipeline system is an energy storage liquid cooling pipeline system, and the pipeline system comprises a secondary pipeline, a tertiary pipeline, and the pipeline joint. The secondary pipeline is connected in communication with the tertiary pipeline through the pipeline joint. The secondary pipeline is the first pipeline, and the tertiary pipeline is the second pipeline. In this way, the fixed seat 1 is an outlet joint, and the connecting sleeve 2 is an inlet joint. In this way, the water flow of the tertiary pipeline can be changed according to actual needs, that is, the flow into the PACK can be adjusted.

[0062] By arranging the pipeline joint on each layer of PACK, the flow consistency of each layer of PACK can be ensured by rotating the rotary joint 3 in the pipeline joint, so that the temperature difference of the battery cell can be better controlled. The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict each other, they should be considered as the scope of the description.

[0063] The above-described embodiments only express several implementation manners of the application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A pipe joint for an energy storage liquid cooled pipe for connecting adjacent first and second pipes, characterized by, The pipe joint comprises: a connecting sleeve (2) for connecting with a first pipe; a fixing base (1) for connecting with a second pipe, the fixing base (1) is coaxially arranged with the connecting sleeve (2), and the fixing base (1) comprises a water passing plate (11), a first through hole (111) is formed in the center of the water passing plate (11), and a second through hole (112) is formed in the side of the first through hole (111); a rotary joint (3) at least partially located between the fixing base (1) and the connecting sleeve (2) and coaxially arranged with the fixing base (1), the axial direction of the rotary joint (3) is defined as a first direction, the rotary joint (3) comprises a water passing disc (31) arranged side by side with the water passing plate (11) along the first direction, the water passing disc (31) is provided with a first water passing hole (311) at a position corresponding to the first through hole (111), and a second water passing hole (312) is formed at a position beside the first water passing hole (311), the rotary joint (3) is arranged to be rotatable relative to the fixing base (1), thereby having at least a first state and a second state: in the first state, at least part of the second water passing hole (312) corresponds to and communicates with the second through hole (112); in the second state, the second water passing hole (312) corresponds to a closed position beside the second through hole (112) on the water passing plate (11).

2. The pipe joint of claim 1, wherein, The second through hole (112) is at least two, and is uniformly distributed on the side of the first through hole (111) along the circumference of the water passing plate (11), the position between adjacent two second through holes (112) on the water passing plate (11) is the closed position, the number of the second water passing hole (312) is equal to the number of the second through hole (112), in the first state of the rotary joint (3), at least part of each second water passing hole (312) communicates with the corresponding second through hole (112); in the second state of the rotary joint (3), each water passing hole corresponds to the closed position respectively.

3. The pipe joint of claim 2, wherein, The second through hole (112) and the second water passing hole (312) are both three, and the cross-sectional area of each second water passing hole (312) is equal, and the central angle between adjacent two second water passing holes (312) is 120°.

4. The pipe joint according to any one of claims 1 to 3, characterized in that The outer peripheral wall of the rotary joint (3) is provided with at least a first marking part (313) and a second marking part (314), the first marking part (313) and the second marking part (314) are arranged at intervals along the circumference of the rotary joint (3), the outer peripheral wall of the connecting sleeve (2) is provided with a reference part (21), in the state that the first marking part (313) corresponds to the reference part (21), the rotary joint (3) is in the first state; in the state that the second marking part (314) corresponds to the reference part (21), the rotary joint (3) is in the second state.

5. The pipe joint of claim 4, wherein, The reference part (21), the first marking part (313) and the second marking part (314) all extend along the first direction and are at least one of a protrusion, a groove and a marking line.

6. The pipe joint of claim 4, wherein, The rotating joint (3) further comprises a rotating ring (32) in the shape of a ring in cross section and coaxially arranged with the water passing disc (31), and a slot (315) is formed on one side of the water passing disc (31) towards the connecting sleeve (2) and extends along the first direction for insertion of the rotating ring (32), and the first marking part (313) and the second marking part (314) are both located on the outer circumferential wall of the water passing disc (31).

7. The pipe joint of claim 6, wherein, One of the outer circumferential wall of the rotating ring (32) and the inner circumferential wall of the slot (315) is provided with a protrusion (3151), and the other is provided with a sliding groove (321) with one end open for the protrusion (3151) to slide into along the first direction, and the protrusion (3151) extends along the first direction.

8. The pipe joint of claim 7, wherein, The sliding groove (321) is located on the outer circumferential wall of the rotating ring (32), and the sliding groove (321) and the protrusion (3151) are both in the shape of a triangular prism, and the opening of the sliding groove (321) is located on the edge of the rotating ring (32) close to the fixed seat (1); And / or, the part of the sliding groove (321) or the protrusion (3151) on the rotating ring (32) located outside the water passing disc (31) is defined as a third marking part (3211), the number of the first marking part (313) and the second marking part (314) is equal to the number of the second water passing hole (312), and at least two of the first marking part (313) and the second marking part (314) are alternately and uniformly arranged along the circumference of the water passing disc (31), and at least part of the third marking part (3211) is located between the corresponding first marking part (313) and the reference part (21) along the first direction and is aligned with the corresponding first marking part (313), and the second marking part (314) and the first marking part (313) other than the one corresponding to the reference part (21) each correspond to a fourth marking part (322), and the fourth marking part (322) is provided on the outer circumferential wall of the rotating ring (32), and at least part of the fourth marking part (322) is located between the water passing disc (31) and the reference part (21).

9. The pipe joint of claim 7, wherein, Both edges of the rotating ring (32) spaced apart along the first direction are defined as a first edge (320), the axial dimension of the rotating ring (32) is L, the depth of the slot (315) along the first direction is L1, and the length of the sliding groove (321) or the protrusion (3151) on the rotating ring (32) is L2, and the distances L1, L2 and L satisfy: L1=1 / 3L, L2=2 / 3L; And / or, the part of the chute (321) or the convex strip (3151) on the rotating ring (32) located outside the water passing disc (31) is defined as a third mark part (3211), at least part of the third mark part (3211) is located between the reference part (21) and the first mark part (313) along the first direction, and is aligned with the first mark part (313), a fourth mark part (322) is arranged on the outer peripheral wall of the rotating ring (32) at a position corresponding to the second mark part (314), and at least part of the fourth mark part (322) is located between the water passing disc (31) and the reference part (21) along the first direction.

10. A piping system comprising a pipe joint, a secondary pipe and a tertiary pipe, the secondary pipe being connected to the tertiary pipe through the pipe joint, characterized in that, The pipe joint is the pipe joint of any one of claims 1-9, the secondary pipe is the first pipe, and the tertiary pipe is the second pipe.

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