Heat exchange pipeline and energy storage device

Abstract

The utility model discloses a heat exchange pipeline and an energy storage device, and belongs to the field of batteries. The two ends of the heat exchange pipeline are used for communicating the cooler and the battery assembly respectively, and the heat exchange pipeline is provided with a first connecting point used for being connected with the low-voltage area conductor and a second connecting point used for being connected with the high-voltage area conductor. The part, located between the first connecting point and the second connecting point, of the heat exchange pipeline is provided with at least one bent section. And the heat exchange pipeline is an insulating pipe fitting. The creepage distance of the heat exchange pipeline from the low-voltage area to the high-voltage area can be prolonged, the high-voltage safety requirement of the energy storage equipment can be met, therefore, the electrical breakdown phenomenon can be reduced, and then the risk that the battery assembly is on fire or explodes when bearing high voltage can be reduced.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a heat exchange pipeline and energy storage device. Background Art

[0002] Currently, most energy storage devices use liquid cooling as a thermal management method to dissipate heat from their battery components. Liquid cooling requires heat exchange pipes to conduct the heat exchange fluid. In high-voltage energy storage devices, due to the high voltage and limited space within the energy storage device, metal pipes cannot meet the safety requirements of high-voltage energy storage systems and need to be improved. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a heat exchange pipeline and energy storage device that can extend the creepage distance from the low-pressure area to the high-pressure area of ​​the heat exchange pipeline to meet the high-voltage safety requirements of the energy storage device.

[0004] In a first aspect, the present application provides a heat exchange pipeline applied to an energy storage device, wherein the energy storage device includes a low-pressure area and a high-pressure area, wherein the low-pressure area is provided with a cooler, and the high-pressure area is provided with a battery assembly;

[0005] The two ends of the heat exchange pipeline are respectively used to connect the cooler and the battery assembly. The heat exchange pipeline has a first connection point for connecting to the low-voltage area conductor and a second connection point for connecting to the high-voltage area conductor. The portion of the heat exchange pipeline located between the first connection point and the second connection point has at least one bend section.

[0006] The heat exchange pipeline is an insulating pipe.

[0007] According to the heat exchange pipeline of the present application, at least one bending section is provided in the portion of the heat exchange pipeline located between the first connection point and the second connection point. Compared with the structure of a straight pipe between the first connection point and the second connection point, the design of adding the bending section can extend the length of the pipeline between the first connection point and the second connection point, and extend the creepage distance between the first connection point and the second connection point, thereby extending the creepage distance of the heat exchange pipeline from the low-pressure area to the high-pressure area, meeting the high-voltage safety requirements of the energy storage equipment, thereby reducing the occurrence of electrical breakdown, and further helping to reduce the risk of fire or explosion problems when the battery assembly is subjected to high voltage.

[0008] According to one embodiment of the present application, the length of the portion of the heat exchange pipeline located between the first connection point and the second connection point is greater than a safety threshold of a creepage distance from the low-pressure area to the high-pressure area.

[0009] According to one embodiment of the present application, the heat exchange pipeline includes:

[0010] a primary pipeline, adapted to be connected to the cooler in the low-pressure zone, wherein the first connection point is located on the primary pipeline;

[0011] a secondary pipeline, adapted to connect the primary pipeline and the battery assembly, wherein the second connection point is located on the secondary pipeline;

[0012] The secondary pipeline includes multiple sections of sub-pipelines, and two adjacent sections of the sub-pipelines are detachably connected.

[0013] According to one embodiment of the present application, the sub-pipeline includes a plurality of pipe sections, and two adjacent pipe sections form the bending section.

[0014] According to one embodiment of the present application, the heat exchange pipeline further includes a tertiary pipeline, one end of the tertiary pipeline is used to be connected to the battery assembly, and the other end is connected to the secondary pipeline.

[0015] In a second aspect, the present application provides an energy storage device, characterized in that it includes:

[0016] The box body is divided into a high-pressure area and a low-pressure area, the high-pressure area is provided with a battery assembly, and the low-pressure area is provided with a cooler;

[0017] The heat exchange pipeline as described in any of the above embodiments, wherein the heat exchange pipeline connects the cooler and the battery assembly.

[0018] According to the energy storage device provided in the embodiments of the present application, by setting the heat exchange pipeline in any of the above embodiments, the portion of the heat exchange pipeline located between the first connection point and the second connection point is provided with at least one bent section. Compared with the structure of a straight pipe between the first connection point and the second connection point, the design of adding the bent section can extend the length of the pipeline between the first connection point and the second connection point, extend the creepage distance between the first connection point and the second connection point, and thus extend the creepage distance from the low-voltage area to the high-voltage area, meeting the high-voltage safety requirements of the energy storage equipment, thereby reducing the occurrence of electrical breakdown, and further helping to reduce the risk of fire or explosion problems when the battery assembly is subjected to high voltage.

[0019] According to one embodiment of the present application, the energy storage device further includes a connection structure, and the heat exchange pipeline is connected to the high-pressure area conductor or the low-pressure area conductor through the connection structure.

[0020] According to one embodiment of the present application, the connection structure includes a first fixing member, which is a metal member and is arranged between the connection point of the heat exchange pipeline connected to the battery assembly in the high-voltage zone and the second connection point; and / or,

[0021] The connection structure includes a second fixing member, which is an insulating member. One end of the second fixing member is connected to the heat exchange pipeline, and the other end of the second fixing member is connected to the low-voltage zone conductor.

[0022] According to one embodiment of the present application, the shortest distance from the connection structure to the high-voltage area conductor is greater than a required electrical clearance safety threshold of the high-voltage area.

[0023] According to one embodiment of the present application, the insulating support is used to support the battery holder in the high-voltage area, and the insulating support is located in the low-voltage area;

[0024] The heat exchange pipeline is spaced apart from the insulating support member.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 This is one of the structural diagrams of the energy storage device provided in the embodiment of the present application;

[0028] Figure 2 This is the second structural diagram of the energy storage device provided in the embodiment of the present application;

[0029] Figure 3 This is the third structural diagram of the energy storage device provided in the embodiment of the present application;

[0030] Figure 4 This is the fourth structural diagram of the energy storage device provided in the embodiment of the present application;

[0031] Figure 5 This is the fifth structural diagram of the energy storage device provided in the embodiment of the present application;

[0032] Figure 6 This is the sixth structural diagram of the energy storage device provided in the embodiment of the present application;

[0033] Figure 7 This is the seventh structural diagram of the energy storage device provided in the embodiment of the present application;

[0034] Figure 8 This is the eighth structural diagram of the energy storage device provided in the embodiment of the present application;

[0035] Figure 9 This is the ninth structural diagram of the energy storage device provided in the embodiment of the present application;

[0036] Figure 10 This is the tenth structural diagram of the energy storage device provided in the embodiment of the present application.

[0037] Reference numerals:

[0038] Energy storage device 100;

[0039] Heat exchange pipeline 1, first connection point 11, second connection point 12, bending section 13, primary pipeline 14, secondary pipeline 15, sub-pipeline 151, pipe portion 1511, tertiary pipeline 16;

[0040] Low-voltage area 2, cooler 21, low-voltage area conductor 22, high-voltage area 3, battery assembly 31, high-voltage area conductor 32;

[0041] Connecting structure 4 , first fixing member 41 , second fixing member 42 , insulating support member 5 . DETAILED DESCRIPTION

[0042] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0043] Reference below Figures 1-10 The heat exchange pipeline 1 and the energy storage device 100 according to an embodiment of the present application are described.

[0044] The energy storage device may be a chemical energy storage device 100 such as a container battery energy storage system. The energy storage device may use liquid cooling to dissipate heat, and the heat exchange pipeline 1 is used to flow heat exchange fluid to dissipate heat from the battery assembly 31 in the energy storage device 100.

[0045] like Figure 1 As shown, the heat exchange pipeline 1 of the embodiment of the present application is applied to an energy storage device 100, which includes a low-pressure region 2 and a high-pressure region 3. The energy storage device 100 generally requires effective heat exchange between the low-pressure region 2 and the high-pressure region 3 to improve the operational stability and service life of the energy storage device 100. The low-pressure region 2 can be located at the bottom of the energy storage device 100, and the high-pressure region 3 is located at the top of the energy storage device 100. A creepage distance safety threshold is defined between the low-pressure region 2 and the high-pressure region 3.

[0046] like Figure 1As shown, the low-pressure zone 2 typically includes a cooler 21, which is used to lower the temperature of the fluid entering the high-pressure zone 3 to reduce the heat load on the battery assembly 31 in the high-pressure zone 3. The high-pressure zone 3 includes the battery assembly 31 and an energy storage converter. The battery assembly 31 is responsible for storing and releasing energy, while the energy storage converter is responsible for converting the battery's direct current into alternating current and controlling the charging and discharging process.

[0047] like Figure 1 and 2 As shown, the two ends of the heat exchange pipeline 1 are respectively used to connect the cooler 21 and the battery assembly 31. The heat exchange pipeline 1 is used to form a heat exchange loop between the cooler 21 and the battery assembly 31. The heat exchange fluid can flow in the heat exchange pipeline 1 to cool the battery assembly 31.

[0048] like Figure 2 As shown, the heat exchange line 1 has a first connection point 11 for connection to a low-pressure region conductor 22 and a second connection point 12 for connection to a high-pressure region conductor 32 .

[0049] The first connection point 11 is the last connection point where the heat exchange pipeline 1 is connected to the low-voltage area conductor 22. The second connection point 12 is the first connection point where the heat exchange pipeline 1 is connected to the high-voltage area conductor 32. There are no conductors at the first connection point 11 and the second connection point 12. The length of the pipeline between the first connection point 11 and the second connection point 12 of the heat exchange pipeline 1 is the creepage distance from the low-voltage area conductor 22 to the high-voltage area conductor 32.

[0050] The length of the heat exchange pipeline 1 between the first connection point 11 and the second connection point 12 is less than or equal to the entire length of the heat exchange pipeline 1 .

[0051] Exemplarily, when the first connection point 11 and the second connection point 12 of the heat exchange pipeline 1 are the two ends of the heat exchange pipeline 1, the pipeline length between the first connection point 11 and the second connection point 12 of the heat exchange pipeline 1 is equal to the entire length of the heat exchange pipeline 1.

[0052] Exemplarily, the first connection point 11 and the second connection point 12 of the heat exchange pipeline 1 are not the ends of the heat exchange pipeline 1, or, when the first connection point 11 or the second connection point 12 is not the end of the heat exchange pipeline 1, the pipeline length between the first connection point 11 and the second connection point 12 of the heat exchange pipeline 1 is less than the overall length of the heat exchange pipeline 1.

[0053] like Figure 9 and Figure 10As shown, the portion of the heat exchange pipeline 1 located between the first connection point 11 and the second connection point 12 has at least one bend section 13. Compared with the structure of a straight pipe between the first connection point 11 and the second connection point 12, the design of adding the bend section 13 can extend the length of the pipeline between the first connection point 11 and the second connection point 12, thereby increasing the creepage distance between the first connection point 11 and the second connection point 12, improving the safety of the energy storage device 100, and reducing the occurrence of electrical breakdown.

[0054] The bending section 13 may be an L-shaped, Z-shaped, S-shaped, or U-shaped pipeline structure.

[0055] For example, Figure 1 and Figure 2 As shown, the bending section 13 can be a Z-shaped pipeline; Figure 3 and Figure 4 As shown, the bending section 13 may include two L-shaped pipes, and the two L-shaped pipes may be connected by a connecting sleeve; Figure 5 and Figure 6 As shown, the bending section 13 may include a U-shaped pipeline and a Z-shaped pipeline, and a U-shaped pipeline and a Z-shaped pipeline may be connected by a connecting sleeve; Figure 7 and Figure 8 As shown, the bending section 13 may include a U-shaped pipeline and an L-shaped pipeline, and the U-shaped pipeline and the L-shaped pipeline may be connected by a connecting sleeve.

[0056] like Figure 9 and Figure 10 As shown, the bending section 13 may include multiple bending sections 13, which are connected in sequence. Bending sections 13 of the same or different shapes can be used in combination, or one bending section 13 can be used alone. In practice, the design can be based on the creepage distance safety threshold from the low-voltage area 2 to the high-voltage area 3.

[0057] The heat exchange pipeline 1 is an insulating pipe, which can prevent current from being conducted through the pipeline, thereby improving the safety of the heat exchange pipeline 1 and the battery system; at the same time, the use of insulating pipes also helps to reduce heat loss and improve heat exchange efficiency.

[0058] The heat exchange pipeline 1 can be a nylon tube, a PE tube, a polytetrafluoroethylene tube or other high-performance plastic tubes.

[0059] According to the heat exchange pipeline 1 provided in the embodiment of the present application, at least one bending section 13 is provided in the portion of the heat exchange pipeline 1 located between the first connection point 11 and the second connection point 12. Compared with the structure of a straight pipe between the first connection point 11 and the second connection point 12, the design of adding the bending section 13 can extend the length of the pipeline between the first connection point 11 and the second connection point 12, and extend the creepage distance between the first connection point 11 and the second connection point 12, so as to extend the creepage distance of the heat exchange pipeline 1 from the low-pressure area 2 to the high-pressure area 3, meet the high-voltage safety requirements of the energy storage equipment, thereby reducing the occurrence of electrical breakdown, and further helping to reduce the risk of fire or explosion of the battery assembly 31 when subjected to high voltage.

[0060] In some embodiments, the length of the heat exchange pipeline 1 between the first connection point 11 and the second connection point 12 is greater than a creepage distance safety threshold from the low-pressure area 2 to the high-pressure area 3 .

[0061] Among them, the pipeline length of the portion of the heat exchange pipeline 1 located between the first connection point 11 and the second connection point 12 is the creepage distance from the low-voltage area conductor 22 to the high-voltage area conductor 32. By setting the pipeline length of the portion between the first connection point 11 and the second connection point 12 to be greater than the creepage distance safety threshold from the low-voltage area 2 to the high-voltage area 3, the creepage distance from the low-voltage area 2 to the high-voltage area 3 can be extended to meet the high-voltage safety requirements of the energy storage equipment, and the occurrence of electrical breakdown can be reduced, which is beneficial to reducing the risk of fire or explosion of the battery assembly 31 when subjected to high voltage.

[0062] In some embodiments, as Figure 3 and Figure 4 As shown, the heat exchange pipeline 1 includes: a primary pipeline 14 and a secondary pipeline 15, and the primary pipeline 14 and the secondary pipeline 15 are connected.

[0063] like Figure 1 As shown, the primary pipeline 14 is suitable for connecting to the cooler 21 of the low-pressure area 2. The primary pipeline 14 can be set in the low-pressure area 2 and can extend along the length direction of the energy storage device.

[0064] The secondary pipeline 15 is suitable for connecting the primary pipeline 14 and the battery assembly 31. Figure 1 As shown, the battery assembly 31 may include multiple battery assemblies 31, and the multiple battery assemblies 31 form multiple battery columns. The multiple battery assemblies 31 in the battery column can be arranged along the height direction of the energy storage device, and the multiple battery columns can be arranged along the length direction of the energy storage device.

[0065] The secondary pipelines 15 may include multiple ones, and the multiple secondary pipelines 15 are all connected to the primary pipeline 14. The multiple secondary pipelines 15 are distributed along the length direction of the energy storage device to connect with multiple battery columns. The secondary pipelines 15 can extend along the height direction of the energy storage device to connect with multiple battery assemblies 31 in the battery column.

[0066] The secondary pipeline 15 is arranged between the low pressure area 2 and the high pressure area 3. Figure 2 As shown, the primary pipeline 14 and the secondary pipeline 15 have a first connection point 11 and a second connection point 12 , and the pipeline length between the first connection point 11 and the second connection point 12 is less than or equal to the pipeline length of the secondary pipeline 15 .

[0067] The first connection point 11 and the second connection point 12 may be located on the secondary pipeline 15 ; or, the first connection point 11 is provided on the primary pipeline 14 , and the second connection point 12 is located on the secondary pipeline 15 .

[0068] Among them, Figure 4 As shown, the secondary pipeline 15 includes multiple sections of sub-pipelines 151, and two adjacent sections of sub-pipelines 151 can be detachably connected to facilitate splicing and assembly based on the creepage distance safety threshold from the low-voltage area 2 to the high-voltage area 3.

[0069] Two adjacent sections of sub-pipelines 151 can be connected by plug-in connection, threaded connection or welding.

[0070] In some embodiments, the primary pipeline 14 includes a primary return pipe and a primary outlet pipe, the secondary pipeline 15 includes a secondary return pipe and a secondary outlet pipe, the outlet of the cooler 21, the primary outlet pipe, the secondary outlet pipe, the battery assembly 31, the secondary return pipe and the primary return pipe are connected in sequence to form a heat exchange loop, and the coolant circulates in the heat exchange loop to cool the battery assembly 31.

[0071] In some embodiments, as Figure 6 As shown, the sub-pipeline 151 includes multiple pipe portions 1511, and two adjacent pipe portions 1511 are bent relative to each other to form a bending section. The number of pipe portions 1511 can include two, and two pipes can be bent once to form an L-shaped bending section; the number of pipe portions 1511 can include three, and two adjacent pipe portions 1511 in three pipes can be bent relative to each other to form a Z-shaped or U-shaped bending section. The number of pipe portions 1511 can include more, and two adjacent pipe portions 1511 in multiple pipes can be bent relative to each other to form an S-shaped or other shaped bending section.

[0072] In some embodiments, as Figure 1 As shown, the heat exchange pipeline 1 further includes a tertiary pipeline 16 , one end of the tertiary pipeline 16 is used to be connected to the battery assembly 31 , and the other end of the tertiary pipeline 16 is connected to the secondary pipeline 15 .

[0073] The tertiary pipelines 16 include a plurality of tertiary pipelines 16 , the number of which corresponds to the number of battery assemblies 31 in the battery column. The plurality of tertiary pipelines 16 are connected to the plurality of battery assemblies 31 in a one-to-one correspondence, and the plurality of tertiary pipelines 16 are connected in parallel.

[0074] By providing a plurality of parallel tertiary pipelines 16 , the heat exchange fluid can be uniformly introduced into the battery assembly 31 , thereby improving the temperature uniformity of the energy storage device.

[0075] In some embodiments, as Figure 1 and Figure 3 As shown, with the height direction of the energy storage device 100 as the projection direction, the projection of the primary pipeline 14 and the projection of the secondary pipeline 15 fall on the side of the projection of the tertiary pipeline 16 close to the battery assembly 31, so as to fully utilize the space between the tertiary pipeline 16 and the battery assembly 31 and reduce the encroachment on the effective space of the energy storage device 100.

[0076] An embodiment of the present application also provides an energy storage device 100, comprising: a box body and a heat exchange pipeline 1 in any of the above embodiments, wherein the box body is divided into a high-pressure area 3 and a low-pressure area 2, the high-pressure area 3 is provided with a battery assembly 31, and the low-pressure area 2 is provided with a cooler 21; the heat exchange pipeline 1 connects the cooler 21 and the battery assembly 31.

[0077] The energy storage device may be a chemical energy storage device 100 such as a container battery energy storage system. The energy storage device may dissipate heat by liquid cooling, and the heat exchange pipeline 1 is used to flow a heat exchange fluid to dissipate heat from the energy storage device 100.

[0078] The low-pressure zone 2 typically includes a cooler 21, which lowers the temperature of the fluid entering the high-pressure zone 3, thereby reducing the heat load on the battery assembly 31 there. The high-pressure zone 3, in turn, contains the battery assembly 31 and an energy storage converter. The battery assembly 31 is responsible for storing and releasing energy, while the energy storage converter converts the battery's direct current into alternating current and controls the charging and discharging process.

[0079] The two ends of the heat exchange pipeline 1 are respectively used to connect the cooler 21 and the battery assembly 31. The heat exchange pipeline 1 is used to form a heat exchange loop between the cooler 21 and the battery assembly 31. The heat exchange fluid can flow in the heat exchange pipeline 1 to cool the battery assembly 31.

[0080] According to the energy storage device 100 provided in the embodiment of the present application, by setting the heat exchange pipeline 1 in any of the above embodiments, the portion of the heat exchange pipeline 1 located between the first connection point 11 and the second connection point 12 is provided with at least one bent section 13. Compared with the structure of a straight pipe between the first connection point 11 and the second connection point 12, the design of adding the bent section 13 can extend the length of the pipeline between the first connection point 11 and the second connection point 12, extend the creepage distance between the first connection point 11 and the second connection point 12, and thus extend the creepage distance from the low-voltage area 2 to the high-voltage area 3, thereby meeting the high-voltage safety requirements of the energy storage equipment, thereby reducing the occurrence of electrical breakdown, and further helping to reduce the risk of fire or explosion problems in the battery assembly 31 when subjected to high voltage.

[0081] In some embodiments, as Figure 2 As shown, the energy storage device 100 further includes a connecting structure 4 , and the heat exchange pipeline 1 is connected to the high-pressure area conductor 32 or the low-pressure area conductor 22 via the connecting structure 4 .

[0082] The connection structure 4 may include one or more connection structures 4 , and the multiple connection structures 4 may be distributed at different locations of the heat exchange pipeline 1 to connect and fix multiple locations of the heat exchange pipeline 1 .

[0083] Exemplarily, part of the connecting structure 4 is connected to the heat exchange pipeline 1, and another part of the connecting structure 4 is connected to the high-pressure area conductor 32; part of the connecting structure 4 is connected to the heat exchange pipeline 1, and another part of the connecting structure 4 is connected to the low-pressure area conductor 22.

[0084] The connection structure 4 may be a clamp, a pipe clamp bracket, a support member or a flange.

[0085] In some embodiments, as Figure 9 and Figure 10 As shown, the connection structure 4 can include multiple parts, and the first fixing part 41 and the second fixing part 42 can be selected according to the electrical gap between the high-voltage area 3 and the low-voltage area 2. The materials of the first fixing part 41 and the second fixing part 42 are different, and the structures can be the same or different.

[0086] For example, when the electrical gap is large, such as Figure 3 As shown, the first fixing part 41 can be a metal part. The first fixing part 41 is arranged in the part between the connection point of the heat exchange pipeline 1 connected to the battery assembly 31 in the high-voltage area 3 and the second connection point 12, that is, the first fixing part 41 is arranged in the part outside the first connection point 11 to the second connection point 12 of the secondary pipeline 15, so as to avoid shortening the creepage distance between the first connection point 11 and the second connection point 12, thereby improving the stability and safety of the electrical performance.

[0087] For example, when the electrical clearance is small, such as Figure 9 and Figure 10 As shown, a second fixing member 42 can be used. The second fixing member 42 is an insulating member. One end of the second fixing member 42 is connected to the heat exchange pipeline 1, and the other end of the second fixing member 42 is connected to the low-voltage area conductor 22 to improve the stability and safety of the electrical performance.

[0088] In this embodiment, one or more first fixing members 41 may be used alone, one or more second fixing members 42 may be used alone, or the first fixing member 41 and the second fixing member 42 may be used in combination to improve the stability of the heat exchange pipeline 1 .

[0089] For example, when the heat exchange pipeline 1 has many bending sections 13 and the bending section between the first connection point 11 and the second connection point 12 is large, one or more second fixing members 42 can be used to fix the pipeline between the first connection point 11 and the second connection point 12 to reduce the shaking of the heat exchange pipeline 1, thereby improving the stability of the connection of the heat exchange pipeline 1.

[0090] In some embodiments, the shortest distance from the connection structure 4 to the high-voltage area conductor 32 is greater than the electrical clearance safety threshold required by the high-voltage area 3 to improve the safety of the energy storage device 100 and the reliability of the electrical response and ensure the normal operation of the equipment.

[0091] In some embodiments, the outlet pipe and return pipe of the primary pipeline 14 are both arranged in the low-pressure area 2, and the primary pipeline 14 is separated from the battery array. The distance between the first fixing member 41 for fixing the primary pipeline 14 and the nearest conductor in the high-pressure area 3 is greater than the electrical clearance distance required by the high-voltage system of the high-pressure area 3, so as to improve the safety and stability of the energy storage device.

[0092] In some embodiments, as Figure 6 and Figure 8 As shown, the energy storage device 100 also includes an insulating support member 5, which is located in the low-voltage area 2. The insulating support member 5 is used to support a battery holder, and the battery holder is located in the high-voltage area 3. A plurality of grooves are provided on the outer surface of the insulating support member 5. The gully design of the plurality of grooves can extend the creepage distance of the insulating support member 5 from the low-voltage area 2 to the high-voltage area 3 to meet safety requirements.

[0093] The heat exchange pipeline 1 is spaced apart from the insulating support 5 to avoid contact between the heat exchange pipeline 1 and the outer surface of the insulating support 5, thereby causing the top of the groove to be connected by the insulated heat exchange pipeline 1, thereby shortening the creepage distance of the insulating support 5 and reducing the impact on the safety and stability of the energy storage device.

[0094] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0095] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0096] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0097] In the description of this application, “plurality” means two or more.

[0098] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0099] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0100] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchange pipeline, characterized in that: Applicable to an energy storage device, the energy storage device includes a low-pressure area and a high-pressure area, the low-pressure area is provided with a cooler, and the high-pressure area is provided with a battery assembly; The two ends of the heat exchange pipeline are respectively used to connect the cooler and the battery assembly. The heat exchange pipeline has a first connection point for connecting to the low-voltage area conductor and a second connection point for connecting to the high-voltage area conductor. The portion of the heat exchange pipeline located between the first connection point and the second connection point has at least one bend section. The heat exchange pipeline is an insulating pipe.

2. The heat exchange pipeline according to claim 1, characterized in that: A length of a portion of the heat exchange pipeline located between the first connection point and the second connection point is greater than a safety threshold of a creepage distance from the low-pressure area to the high-pressure area.

3. The heat exchange pipeline according to claim 1 or 2, characterized in that: The heat exchange pipeline comprises: a primary pipeline, adapted to be connected to the cooler in the low-pressure zone, wherein the first connection point is located on the primary pipeline; a secondary pipeline, adapted to connect the primary pipeline and the battery assembly, wherein the second connection point is located on the secondary pipeline; The secondary pipeline includes multiple sections of sub-pipelines, and two adjacent sections of the sub-pipelines are detachably connected.

4. The heat exchange pipeline according to claim 3, characterized in that: The sub-pipeline includes a plurality of pipe sections, and two adjacent pipe sections form the bending section.

5. The heat exchange pipeline according to claim 3, characterized in that: The heat exchange pipeline also includes a tertiary pipeline, one end of which is used to be connected to the battery assembly, and the other end is connected to the secondary pipeline.

6. An energy storage device, characterized in that: include: A high-pressure area and a low-pressure area, wherein the high-pressure area is provided with a battery assembly and the low-pressure area is provided with a cooler; The heat exchange pipeline according to any one of claims 1 to 5, wherein the heat exchange pipeline connects the cooler and the battery assembly.

7. The energy storage device according to claim 6, characterized in that The energy storage device further includes a connection structure, and the heat exchange pipeline is connected to the high-pressure area conductor or the low-pressure area conductor via the connection structure.

8. The energy storage device according to claim 7, characterized in that The connection structure includes a first fixing member, the first fixing member is a metal member, and the first fixing member is arranged between the connection point of the heat exchange pipeline connected to the battery assembly in the high-voltage zone and the second connection point; and / or, The connection structure includes a second fixing member, which is an insulating member. One end of the second fixing member is connected to the heat exchange pipeline, and the other end of the second fixing member is connected to the low-voltage zone conductor.

9. The energy storage device according to claim 7, characterized in that: The shortest distance from the connection structure to the high-voltage area conductor is greater than the electrical clearance safety threshold required by the high-voltage area.

10. The energy storage device according to any one of claims 6 to 9, characterized in that: The energy storage device further includes an insulating support member, the insulating support member being used to support the battery holder in the high-voltage area, and the insulating support member being located in the low-voltage area; The heat exchange pipeline is spaced apart from the insulating support member.

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