Battery pack of vehicle, dismounting method of temperature sensor of battery pack and vehicle comprising battery pack

Abstract

The invention relates to a battery pack of a vehicle, a dismounting method of a temperature sensor of the battery pack and the vehicle comprising the battery pack. The cooling system of the battery pack comprises a liquid inlet assembly, a liquid outlet assembly and a sensor assembly, the liquid inlet assembly comprises a liquid inlet flange and a liquid inlet pipeline, and the liquid inlet pipeline is installed to a liquid inlet of the battery pack shell through the liquid inlet flange and communicated with an external pipeline through a liquid inlet connector. The liquid outlet assembly comprises a liquid outlet flange and a liquid outlet pipeline, and the liquid outlet pipeline is installed to the liquid outlet of the shell through the liquid outlet flange and communicated with an external pipeline through a liquid outlet connector. The sensor assembly is arranged in the shell and comprises a connecting pipeline and a temperature sensor detachably installed on the connecting pipeline, the connecting pipeline is connected with the liquid inlet pipeline and the liquid inlet connector, the temperature sensor is configured to penetrate through the liquid inlet along with the connecting pipeline, and / or the connecting pipeline is connected with the liquid outlet pipeline and the liquid outlet connector. The temperature sensor is configured to penetrate through the liquid outlet along with the connecting pipeline.

Description

Technical Field

[0001] The present invention generally relates to the field of vehicles, and more specifically, to a vehicle battery pack with a built-in temperature sensor. The present invention also relates to a method for removing the temperature sensor inside the battery pack, and to a vehicle including the battery pack. Background Art

[0002] With the increasing popularity of new energy vehicles, higher and higher requirements are placed on the design of the cooling system of the battery pack. At present, the cooling method adopted by the battery pack of most new energy vehicles is cooling by cooling plate. More specifically, the cooling system of the battery pack includes a liquid inlet assembly, a cooling plate and a liquid outlet assembly. The liquid inlet assembly includes a liquid inlet flange and a liquid inlet pipeline. The input end of the liquid inlet pipeline is installed to the battery pack housing through the liquid inlet flange, and is connected to the external pipeline through a joint passing through the liquid inlet flange, and the output end of the liquid inlet pipeline is connected to the input end of the cooling plate through a joint. The liquid outlet assembly includes a liquid outlet flange and a liquid outlet pipeline. The input end of the liquid outlet pipeline is connected to the output end of the cooling plate through a joint. The output end of the liquid outlet pipeline is installed to the battery pack housing through the liquid outlet flange, and is connected to the external pipeline through a joint passing through the liquid outlet flange, thereby forming a cooling circuit for the flow of coolant.

[0003] In the cooling system, both the liquid inlet assembly and the liquid outlet assembly are usually provided with a temperature sensor, which is used to monitor the temperature of the coolant in the cooling circuit and send a feedback signal to the battery management system (BMS) or the vehicle control unit (VCU). According to one solution in the prior art, the temperature sensor can be connected to the pipeline outside the battery pack shell, but the disadvantage of this solution is that the installation space outside the battery pack shell is very limited, and the installation of the temperature sensor usually requires at least 25 mm of length space, such as space limitations. Such space limitations may cause risks such as sagging, bending and cracking of the external pipeline. According to another solution in the prior art, the temperature sensor can be integrated into the above-mentioned liquid inlet flange and liquid outlet flange, but the disadvantage of this solution is that the structure is complex, the cost is high, and it may also be affected by space limitations. Summary of the invention

[0004] The object of the present invention is to provide a vehicle battery pack with a built-in temperature sensor. This arrangement of the temperature sensor will not be affected by the space limitation outside the battery pack shell, and has a simple structure and low cost. At the same time, the temperature sensor can be easily disassembled during after-sales maintenance.

[0005] To this end, a first aspect of the present invention provides a battery pack for a vehicle, the battery pack comprising a shell and a cooling system, the cooling system comprising a liquid inlet assembly, a liquid outlet assembly and a cooling plate arranged inside the shell, the liquid inlet assembly comprising a liquid inlet flange and a liquid inlet pipeline, the input end of the liquid inlet pipeline being mounted to the liquid inlet port of the shell through the liquid inlet flange, and being adapted to be connected to a pipeline arranged outside the shell through a liquid inlet joint passing through the liquid inlet flange, the output end of the liquid inlet pipeline being connected to the cooling plate, the liquid outlet assembly comprising a liquid outlet flange and a liquid outlet pipeline, the input end of the liquid outlet pipeline being connected to the cooling plate, and the output end of the liquid outlet pipeline being connected to the cooling plate. The liquid outlet is installed to the shell through the liquid outlet flange, and is suitable for communicating with a pipeline arranged outside the shell through a liquid outlet joint passing through the liquid outlet flange, wherein the cooling system also includes a sensor assembly arranged inside the shell, the sensor assembly includes a connecting pipeline and a temperature sensor detachably installed to the connecting pipeline, the connecting pipeline connects the liquid inlet pipeline and the liquid inlet joint, the temperature sensor is configured to pass through the liquid inlet with the connecting pipeline, and / or the connecting pipeline connects the liquid outlet pipeline and the liquid outlet joint, and the temperature sensor is configured to pass through the liquid outlet with the connecting pipeline.

[0006] According to an optional embodiment of the present invention, each of the liquid inlet flange and the liquid outlet flange has an abutment surface abutting against the outside of the shell, and the abutment surface is provided with a sealing ring, and the sealing ring defines a covering area that completely covers the liquid inlet or the liquid outlet, wherein each of the liquid inlet flange and the liquid outlet flange is provided with a first opening positioned inside the covering area to install the liquid inlet joint or the liquid outlet joint.

[0007] According to an optional embodiment of the present invention, the liquid inlet flange and / or the liquid outlet flange is provided with a plurality of fixing holes positioned outside the covering area, so as to be mounted to the housing by a plurality of screws passing through the plurality of fixing holes.

[0008] According to an optional embodiment of the present invention, the liquid inlet flange and / or the liquid outlet flange is provided with a second opening located inside the covering area for installing the exhaust valve.

[0009] According to an optional embodiment of the present invention, the liquid inlet flange and / or the liquid outlet flange is provided with a plurality of positioning pins positioned inside the covering area and protruding from the abutment surface, and the shell is provided with a plurality of positioning holes adapted to the plurality of positioning pins.

[0010] According to an optional embodiment of the present invention, the liquid inlet pipeline includes a plurality of curved sections so that the liquid inlet pipeline has a length enabling the temperature sensor to pass through the liquid inlet, and / or the liquid outlet pipeline includes a plurality of curved sections so that the liquid outlet pipeline has a length enabling the temperature sensor to pass through the liquid outlet.

[0011] According to an optional embodiment of the present invention, the liquid inlet flange, the liquid inlet joint, the connecting pipeline and the liquid inlet pipeline are assembled into an integral part by injection molding, and / or the liquid outlet flange, the liquid outlet joint, the connecting pipeline and the liquid outlet pipeline are assembled into an integral part by injection molding.

[0012] The second aspect of the present invention provides a method for disassembling a temperature sensor inside a battery pack according to the first aspect of the present invention, the method comprising: separating the liquid inlet flange and / or the liquid outlet flange from the shell; pulling the liquid inlet flange so that the temperature sensor passes through the liquid inlet along with the connecting pipe to reach the outside of the shell, and / or pulling the liquid outlet flange so that the temperature sensor passes through the liquid outlet along with the connecting pipe to reach the outside of the shell; and separating the temperature sensor from the connecting pipe.

[0013] A third aspect of the present invention provides a vehicle, the vehicle comprising the battery pack according to the first aspect of the present invention.

[0014] Compared with the prior art, the present invention has multiple beneficial effects, especially: the temperature sensor is arranged inside the battery pack shell, thereby avoiding the risks of external pipeline sagging, bending and cracking caused by arranging it outside the shell, and this arrangement is simple in structure and low in cost. At the same time, the temperature sensor can be easily disassembled during after-sales maintenance, meeting the ergonomic requirements of after-sales maintenance, and can therefore be promoted and applied in various types of vehicle battery packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features and advantages of the present invention will be better understood through the following preferred embodiments described in detail in conjunction with the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components.

[0016] Figure 1 is a schematic structural diagram of a cooling system for a vehicle battery pack according to an embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the liquid inlet component of the cooling system;

[0018] Figure 3 is an exploded schematic diagram of the liquid inlet assembly;

[0019] Figure 4is a schematic diagram of the inner side of the liquid inlet flange of the liquid inlet assembly;

[0020] Figure 5 is a schematic diagram of the liquid inlet assembly being installed on the outer side of the battery pack shell;

[0021] Figure 6 is a schematic diagram of the shape of the liquid inlet pipeline of the liquid inlet component;

[0022] Figure 7 It is a schematic diagram of the shape of the pipeline used for comparison and reference.

[0023] The elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to exact scale. It should be understood that these accompanying drawings can be used not only to explain and illustrate the present invention but also to help define the present invention when necessary. DETAILED DESCRIPTION

[0024] The implementation and use of specific embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of specific ways to implement and use the invention, and are not intended to limit the scope of the invention.

[0025] In this specification, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this specification can be understood according to the specific circumstances.

[0026] The battery pack according to the present invention is, for example, a power battery pack for a new energy vehicle, such as Figures 1 to 5 As shown, the battery pack includes a shell 40 and a cooling system, and the cooling system includes a liquid inlet assembly 10, a liquid outlet assembly 30, and a cooling plate 20 arranged inside the shell 40. In the battery pack, the battery module arranged inside the shell 40 is cooled by the coolant circulating in the cooling pipeline of the cooling plate 20, wherein the cooling plate 20 is usually attached to the bottom surface or the top surface of the battery module, and for a battery pack including multiple battery modules, the cooling plate 20 can also be arranged between two adjacent battery modules.

[0027] The liquid inlet assembly 10 includes a liquid inlet flange 11 having a generally rectangular shape and a flexible liquid inlet pipeline 12 made of, for example, a rubber material. An input end 121 of the liquid inlet pipeline 12 is mounted to the liquid inlet port 41 of the housing 40 through the liquid inlet flange 11, and is communicated with a pipeline arranged outside the housing 40 through a liquid inlet joint 13 passing through and fixed to the liquid inlet flange 11. An output end 122 of the liquid inlet pipeline 12 is communicated with an input end 21 of the cooling plate 20 through a first connection joint 16. Similarly, the liquid outlet assembly 30 includes a liquid outlet flange 31 having a generally rectangular shape and a flexible liquid outlet pipeline 32 made of, for example, a rubber material. An input end of the liquid outlet pipeline 32 is communicated with an output end 22 of the cooling plate 20 through a second connection joint 34. An output end of the liquid outlet pipeline 32 is mounted to the liquid outlet port of the housing 40 through the liquid outlet flange 31, and is communicated with a pipeline arranged outside the housing 40 through a liquid outlet joint 33 passing through and fixed to the liquid outlet flange 31, thereby forming a cooling circuit for the flow of coolant.

[0028] In addition, the cooling system also includes a sensor assembly arranged in the liquid inlet assembly 10 and / or the liquid outlet assembly 30 inside the shell 40, and the sensor assembly includes a connecting pipe 14 and a temperature sensor 15 that is detachably mounted to the connecting pipe 14, for example, by snap-on, plug-in or any other suitable means. The temperature sensor 15 includes a probe extending into the connecting pipe 14 to monitor the temperature of the coolant in the cooling circuit, and sends a feedback signal to the battery management system (BMS) or the vehicle control unit (VCU) through a wiring harness detachably connected to the temperature sensor 15. Since the connecting pipe 14 and the temperature sensor 15 are arranged inside the shell 40, the arrangement of the sensor assembly will not be affected by the space limitation outside the shell 40, avoiding the risk of sagging, bending and cracking of the external pipe caused by arranging it outside the shell 40.

[0029] In addition, since the temperature sensor 15 is built-in, it is necessary to consider how to conveniently remove the temperature sensor 15 without opening the housing 40 during after-sales maintenance. Figure 2 and Figure 3As shown, in the illustrated embodiment, taking the sensor assembly in the liquid inlet assembly 10 as an example, the input end 141 of the connecting line 14 is connected to the liquid inlet connector 13, the output end 142 of the connecting line 14 is connected to the input end 121 of the liquid inlet line 12, and the mounting interface 143 of the connecting line 14 is used to mount the temperature sensor 15. The liquid inlet flange 11, the liquid inlet connector 13, the connecting line 14, the liquid inlet line 12 and the first connecting connector 16 are preferably fixedly connected in sequence, for example, by injection molding, to be assembled into an integral part, and the liquid inlet connector 13 and the first connecting connector 16 are preferably quick connectors (QC-"Quick Connector") to conveniently connect to the external pipeline and the input end 21 of the cooling plate 20, respectively. By designing the shape and size of the liquid inlet port 41 of the housing 40, when the liquid inlet flange 11 is pulled, the temperature sensor 15 can pass through the liquid inlet port 41 with the connecting line 14 to reach the outside of the housing 40 for easy removal.

[0030] It is understandable that the sensor assembly in the liquid outlet assembly 30 may also adopt a similar structure, that is, the connecting pipe 14 connects the liquid outlet pipe 32 and the liquid outlet joint 33. The liquid outlet flange 31, the liquid outlet joint 33, the connecting pipe 14, the liquid outlet pipe 32 and the second connecting joint 34 are preferably fixedly connected in sequence, for example, by injection molding, etc. to be assembled into an integral part, and the liquid inlet joint 13 and the second connecting joint 34 are preferably quick connectors to facilitate connection with the external pipeline and the output end 22 of the cooling plate 20, respectively. By designing the shape and size of the liquid outlet of the housing 40, when the liquid outlet flange 31 is pulled, the temperature sensor 15 can pass through the liquid outlet with the connecting pipe 14 to reach the outside of the housing 40 for easy removal.

[0031] Especially Figure 4 and Figure 5 As shown, in the illustrated embodiment, each of the liquid inlet flange 11 and the liquid outlet flange 31 may have an abutment surface 111 abutting against the outside of the shell 40, and the abutment surface 111 is provided with, for example, a roughly oblong sealing ring 112, which limits the central covering area 117 of the liquid inlet flange 11 to completely cover the roughly oblong liquid inlet port 41 of the shell 40, or limits the central covering area of ​​the liquid outlet flange 31 to completely cover the roughly oblong liquid outlet port of the shell 40.

[0032] Each of the liquid inlet flange 11 and the liquid outlet flange 31 is provided with a first opening 113 positioned inside the covering area 117 for installing the liquid inlet connector 13 or the liquid outlet connector 33. Preferably, the liquid inlet flange 11 and / or the liquid outlet flange 31 is also provided with a second opening 114 positioned inside the covering area 117 for installing an exhaust valve, which is, for example, threadedly connected to the second opening 114, so as to be able to perform exhaust in the event of thermal runaway inside the battery module. Preferably, the liquid inlet flange 11 and / or the liquid outlet flange 31 is provided with a plurality of fixing holes 116 positioned outside the covering area 117 (for example, the four fixing holes 116 shown at the four corners of the liquid inlet flange 11), and the housing 40 is provided with a plurality of screw holes 44 surrounding the liquid inlet 41 and / or the liquid outlet and adapted to these fixing holes 116, so that the liquid inlet flange 11 and / or the liquid outlet flange 31 are installed to the corresponding position of the housing 40 by a plurality of screws passing through these fixing holes 116 and the screw holes 44.

[0033] Also preferably, the liquid inlet flange 11 and / or the liquid outlet flange 31 are provided with a plurality of positioning pins 115 (e.g., two positioning pins 115 shown arranged adjacent to each other on the upper portion of the covering area 117) positioned inside the covering area 117 and protruding from the abutment surface 111, and the housing 40 is provided with a plurality of positioning holes 43 adapted to these positioning pins 115 (e.g., the housing 40 includes a protrusion 42 protruding downward from the upper edge of the liquid inlet 41, and the protrusion 42 is provided with two positioning holes 43 adapted to the two positioning pins 115). The provision of these positioning members enables the liquid inlet flange 11 and / or the liquid outlet flange 31 to be pre-positioned on the housing 40 before the liquid inlet flange 11 and / or the liquid outlet flange 31 are installed, thereby preventing the liquid inlet flange 11 and / or the liquid outlet flange 31 from falling or rotating. It is understandable that the number and location of these positioning members are not restrictive, and it is only necessary that the liquid inlet 41 and / or the liquid outlet covered by the covered area 117 of the shell 40 can be passed through by the temperature sensor 15 .

[0034] Especially Figure 6 As shown, in the illustrated embodiment, the liquid inlet pipeline 12 may preferably include a plurality of curved sections (for example, the first curved section 123, the second curved section 124, and the third curved section 125 shown are arranged in sequence to form a substantially "J" shape), so that the liquid inlet pipeline 12 has a length that enables the temperature sensor 15 to pass through the liquid inlet 41 along with the connecting pipeline 14. Similarly, the liquid outlet pipeline 32 may preferably include a plurality of curved sections, so that the liquid outlet pipeline 32 has a length that enables the temperature sensor 15 to pass through the liquid outlet along with the connecting pipeline 14. Figure 7A pipe 50 for comparative reference is shown, which only includes a curved section 51 to form a substantially "L" shape. Compared with the pipe 50, the liquid inlet pipe 12 and / or the liquid outlet pipe 32 of the present invention can be easily pulled toward the outside of the housing 40, thereby facilitating the removal of the temperature sensor 15.

[0035] In the case where the liquid inlet assembly 10 is provided with a temperature sensor 15, during the installation process, the liquid inlet flange 11, the liquid inlet joint 13, the connecting pipe 14, the liquid inlet pipe 12 and the first connecting joint 16 are first fixedly connected in sequence to form an integral part, and the temperature sensor 15 is detachably installed to the connecting pipe 14; then, the output end 122 of the liquid inlet pipe 12 is extended into the interior of the shell 40 through the liquid inlet port 41 of the shell 40, and is connected to the input end 21 of the cooling plate 20 through the first connecting joint 16, and the temperature sensor 15 thus enters the interior of the shell 40 through the liquid inlet port 41 of the shell 40, and the temperature sensor 15 is connected to the battery management system or the vehicle control unit through the wiring harness; finally, the liquid inlet flange 11 is pre-positioned on the outer side of the shell 40 by the cooperation of the locating pin 115 and the locating hole 43, and then the liquid inlet flange 11 is installed to the outer side of the shell 40 by screws and completely covers the liquid inlet port 41.

[0036] During the disassembly process, first, the screw connection between the liquid inlet flange 11 and the shell 40 is separated, and the liquid inlet flange 11 is pulled outward to separate the locating pin 115 from the locating hole 43; then, the operator can manually separate the temperature sensor 15 from the wiring harness through the liquid inlet port 41, and appropriately rotate the liquid inlet flange 11 to an angle that allows the temperature sensor 15 to pass through the liquid inlet port 41; then, the liquid inlet flange 11 is pulled outward to allow the temperature sensor 15 to pass through the liquid inlet port 41 along with the connecting pipe 14, and the temperature sensor 15 thereby reaches the outside of the shell 40 via the liquid inlet port 41; finally, the temperature sensor 15 is separated from the connecting pipe 14 to complete the disassembly without damaging the temperature sensor 15 and the liquid inlet connector 13.

[0037] Similarly, in the case where the liquid outlet assembly 30 is provided with a temperature sensor 15, during the installation process, the liquid outlet flange 31, the liquid outlet joint 33, the connecting pipe 14, the liquid outlet pipe 32 and the second connecting joint 34 are first fixedly connected in sequence to form an integrated part, and the temperature sensor 15 is detachably installed to the connecting pipe 14; then, the input end of the liquid outlet pipe 32 is extended into the interior of the shell 40 through the liquid outlet port of the shell 40, and is connected to the output end 22 of the cooling plate 20 through the second connecting joint 34, and the temperature sensor 15 thus enters the interior of the shell 40 through the liquid outlet port of the shell 40, and the temperature sensor 15 is connected to the battery management system or the vehicle control unit through the wiring harness; finally, the liquid outlet flange 31 is pre-positioned on the outer side of the shell 40 by the cooperation of the locating pin and the locating hole, and then the liquid outlet flange 31 is installed to the outer side of the shell 40 by screws and completely covers the liquid outlet.

[0038] During the disassembly process, first, the screw connection between the liquid outlet flange 31 and the shell 40 is separated, and the liquid outlet flange 31 is pulled outward to separate the positioning pin from the positioning hole; then, the operator can manually separate the temperature sensor 15 from the wiring harness through the liquid outlet, and appropriately rotate the liquid outlet flange 31 to an angle that allows the temperature sensor 15 to pass through the liquid outlet; then, the liquid outlet flange 31 is pulled outward to allow the temperature sensor 15 to pass through the liquid outlet along with the connecting pipe 14, and the temperature sensor 15 thereby reaches the outside of the shell 40 via the liquid outlet; finally, the temperature sensor 15 is separated from the connecting pipe 14 to complete the disassembly without damaging the temperature sensor 15 and the liquid outlet connector 33.

[0039] The technical content and technical features of the present invention have been disclosed above. However, it can be understood that under the creative ideas of the present invention, technicians in this field can make various changes and improvements to the above-disclosed concepts, but all belong to the protection scope of the present invention.

[0040] The description of the above embodiments is intended to be illustrative rather than restrictive. The protection scope of the present invention is determined by the claims.

Claims

1. A battery pack for a vehicle, comprising a housing (40) and a cooling system, wherein the cooling system comprises a liquid inlet assembly (10), a liquid outlet assembly (30) and a cooling plate (20) arranged inside the housing (40), The liquid inlet assembly (10) comprises a liquid inlet flange (11) and a liquid inlet pipeline (12); an input end of the liquid inlet pipeline (12) is mounted to a liquid inlet port (41) of the housing (40) through the liquid inlet flange (11), and is adapted to be connected to a pipeline arranged outside the housing (40) through a liquid inlet joint (13) passing through the liquid inlet flange (11); an output end of the liquid inlet pipeline (12) is connected to the cooling plate (20). The liquid outlet assembly (30) comprises a liquid outlet flange (31) and a liquid outlet pipeline (32), wherein an input end of the liquid outlet pipeline (32) is in communication with the cooling plate (20), and an output end of the liquid outlet pipeline (32) is mounted to a liquid outlet of the shell (40) through the liquid outlet flange (31), and is adapted to be in communication with a pipeline arranged outside the shell (40) through a liquid outlet joint (33) passing through the liquid outlet flange (31). It is characterized in that The cooling system further comprises a sensor assembly arranged inside the housing (40), the sensor assembly comprising a connecting pipe (14) and a temperature sensor (15) detachably mounted to the connecting pipe (14). The connecting pipeline (14) connects the liquid inlet pipeline (12) and the liquid inlet joint (13), the temperature sensor (15) is configured to be able to pass through the liquid inlet (41) along with the connecting pipeline (14), and / or The connecting pipeline (14) connects the liquid outlet pipeline (32) and the liquid outlet joint (33), and the temperature sensor (15) is configured to be able to pass through the liquid outlet along with the connecting pipeline (14).

2. The battery pack according to claim 1, characterized in that: Each of the liquid inlet flange (11) and the liquid outlet flange (31) has an abutting surface (111) abutting against the outside of the shell (40), and the abutting surface (111) is provided with a sealing ring (112), and the sealing ring (112) defines a covering area (117) that completely covers the liquid inlet (41) or the liquid outlet, wherein each of the liquid inlet flange (11) and the liquid outlet flange (31) is provided with a first opening (113) positioned inside the covering area (117) for mounting the liquid inlet connector (13) or the liquid outlet connector (33).

3. The battery pack according to claim 2, characterized in that: The liquid inlet flange (11) and / or the liquid outlet flange (31) are provided with a plurality of fixing holes (116) located outside the covering area (117) so as to be mounted to the housing (40) by means of a plurality of screws passing through the plurality of fixing holes (116).

4. The battery pack according to claim 2, characterized in that: The liquid inlet flange (11) and / or the liquid outlet flange (31) is provided with a second opening (114) positioned inside the covering area (117) for installing an exhaust valve.

5. The battery pack according to claim 2, characterized in that: The liquid inlet flange (11) and / or the liquid outlet flange (31) is provided with a plurality of positioning pins (115) positioned inside the covering area (117) and protruding from the abutment surface (111), and the housing (40) is provided with a plurality of positioning holes (43) adapted to the plurality of positioning pins (115).

6. The battery pack according to any one of claims 1 to 5, characterized in that: The liquid inlet pipeline (12) includes a plurality of curved sections (123, 124, 125), so that the liquid inlet pipeline (12) has a length that enables the temperature sensor (15) to pass through the liquid inlet (41), and / or the liquid outlet pipeline (32) includes a plurality of curved sections, so that the liquid outlet pipeline (32) has a length that enables the temperature sensor (15) to pass through the liquid outlet.

7. The battery pack according to any one of claims 1 to 5, characterized in that: The liquid inlet flange (11), the liquid inlet joint (13), the connecting pipeline (14) and the liquid inlet pipeline (12) are assembled into an integral part by injection molding, and / or the liquid outlet flange (31), the liquid outlet joint (33), the connecting pipeline (14) and the liquid outlet pipeline (32) are assembled into an integral part by injection molding.

8. A method for removing a temperature sensor (15) inside a battery pack according to any one of claims 1 to 7, characterized in that: include: Separating the liquid inlet flange (11) and / or the liquid outlet flange (31) from the housing (40); Pulling the liquid inlet flange (11) so that the temperature sensor (15) passes through the liquid inlet (41) along with the connecting pipeline (14) to reach the outside of the housing (40), and / or pulling the liquid outlet flange (31) so that the temperature sensor (15) passes through the liquid outlet along with the connecting pipeline (14) to reach the outside of the housing (40); and The temperature sensor (15) is separated from the connecting pipeline (14).

9. A vehicle, characterized in that: Comprising a battery pack according to any one of claims 1 to 7.

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