Pipeline flow adjusting device and battery cell shell with same

Abstract

The utility model provides a pipeline flow adjusting device which is arranged on a fluid conveying pipeline and comprises a wrapping body fixedly connected to the outer portion of the pipeline and provided with elastic deformation quantity larger than that of the pipeline. The cut-off part is fixed on the wrapping body and is inserted into the pipeline in a sliding manner from the outside of the pipeline, and the cut-off part has a first state in which part of the cut-off part is kept in the pipeline so as to partially conduct the pipeline and a second state in which the cut-off part can be driven to move so as to conduct the pipeline; and the temperature sensing driving part acts between the wrapping body and the pipeline, and the temperature sensing driving part expands or contracts due to sensing of the change of the temperature in the pipeline so as to drive the wrapping body to drive the closure part to be switched between the first state and the second state. According to the utility model, the heat dissipation system can provide better-controlled temperature regulation according to different temperature states of the power battery, so as to improve the use performance and prolong the service life of the power battery.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile batteries, in particular to a pipeline flow regulating device and a battery core shell having the same. Background Art

[0002] As the power source of the vehicle, the performance of the power battery of new energy vehicles is closely related to the temperature of the power battery. In order to extend the service life of the power battery as much as possible and obtain the maximum power, the battery needs to be used within the specified temperature range. During the charging and discharging process of the power battery, there will be heat generation problems, which is mainly caused by the chemical reaction and current flow inside the power battery. If the generated heat cannot be effectively managed and dissipated, it may cause the temperature of the power battery to rise, thereby affecting the performance and life of the power battery, and may even cause the battery to overheat, expand, leak, or cause fire and explosion, etc. Therefore, effective thermal management of the power battery is a major challenge.

[0003] In related technologies, in order to ensure that the power battery operates within a suitable temperature range, the vehicle is often equipped with an external indirect conduction heat dissipation system for the battery, such as a liquid cooling system. However, since the power battery has a higher heat dissipation requirement during charging than during discharging, the battery system needs to have a larger heat dissipation capacity to meet the heat dissipation requirement during charging. However, under normal driving and operation scenarios of the vehicle, the heat dissipation system is not required to operate at the maximum cooling efficiency. The heat dissipation system cannot achieve better temperature regulation according to the different temperature states of the power battery, which affects the battery's performance and life. Utility Model Content

[0004] In view of this, the utility model aims to propose a pipeline flow regulating device to enable the heat dissipation system to provide better controlled temperature regulation according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A pipeline flow regulating device is arranged on a fluid delivery pipeline, and the regulating device comprises:

[0007] An inclusion body, fixedly connected to the outside of the pipeline, wherein the inclusion body has an elastic deformation amount greater than that of the pipeline;

[0008] A shutoff portion is fixed on the enclosure and is inserted into the pipeline by sliding from the outside of the pipeline, wherein the shutoff portion has a first state in which it is partially retained in the pipeline to partially open the pipeline, and a second state in which it can be driven to move and open the pipeline;

[0009] The temperature-sensing driving part acts between the inclusion body and the pipeline. The temperature-sensing driving part expands or contracts due to sensing the temperature change in the pipeline, so as to drive the inclusion body to drive the intercepting part to switch between the first state and the second state.

[0010] Furthermore, the temperature-sensing driving unit includes an elastic bag and a temperature-sensing gas sealed in the elastic bag.

[0011] Furthermore, the temperature sensitive gas is tetrafluoroethane.

[0012] Furthermore, the elastic bag is bound between the inner surface of the enclosure and the outer surface of the pipeline.

[0013] Furthermore, the number of the temperature-sensing driving parts is at least two, and the two temperature-sensing driving parts are distributed on both sides of the intercepting part along the axial direction of the pipeline.

[0014] Furthermore, the inclusion body is made of rubber material.

[0015] Furthermore, the intercepting portion is slidably inserted into the pipeline along a direction perpendicular to the center line of the pipeline.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The pipeline flow regulating device described in the utility model is provided with an inclusion body, so that the inclusion body includes the intercepting part and the temperature-sensitive driving part and is connected with the pipeline. The fluid in the inclusion body directly contacts the temperature-sensitive driving part, so that the temperature-sensitive driving part expands or contracts with the temperature of the fluid in the pipeline, and then the intercepting part slides in the pipeline to achieve full or partial conduction of the pipeline. When the temperature of the fluid in the pipeline is high, the temperature-sensitive driving part expands, driving the inclusion body to undergo elastic deformation, so as to adjust the relative position of the intercepting part and the pipeline. At this time, the pipeline is fully conducted, increasing the passage cross-sectional area of ​​the pipeline and achieving rapid heat dissipation; when the temperature of the fluid in the pipeline is normal, the pipeline is partially conducted to reduce the power of the heat dissipation system; and a better controlled temperature regulation is achieved according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0018] Secondly, by providing an elastic bag and temperature-sensitive gas, the temperature-sensitive drive unit can quickly make expansion or contraction feedback according to the temperature of the fluid in the pipeline; the elastic bag ensures that it can expand and deform while having good sealing properties; the temperature-sensitive gas will not cause fatigue during use and has better durability.

[0019] In addition, the temperature-sensitive gas is tetrafluoroethane, which will not damage the ozone layer at all. Compared with other refrigerants, it has good thermal expansion capacity and is more environmentally friendly.

[0020] The elastic bag is bound between the inner surface of the inclusion and the outer surface of the pipeline, ensuring that the elastic bag can directly contact the fluid in the pipeline to expand or contract. At the same time, when the temperature of the fluid in the pipeline is too high, the inclusion can limit the leakage or breakage caused by excessive expansion of the elastic bag, but will not affect the adjustment of the cut-off part to keep the pipeline in a fully conductive state.

[0021] The temperature-sensing driving parts distributed on both sides of the intercepting part jointly sense the temperature of the fluid in the pipeline and respond with expansion or contraction at the same time. The temperature-sensing driving parts are arranged on both sides of the intercepting part so that the force on the intercepting part is more balanced and the switching between the first state and the second state is more convenient.

[0022] The intercepting part is slidably inserted into the pipeline along a direction perpendicular to the center line of the pipeline, so that the intercepting part can adjust the conduction state of the pipeline with a minimum displacement, reduce the stroke of the intercepting part, and achieve rapid response of the regulating device.

[0023] The utility model also proposes a battery cell shell, including a shell body encapsulated outside the battery cell, at least part of the shell body is integrated with a cooling pipe with a liquid inlet pipe and a liquid outlet pipe, and the liquid outlet pipe is equipped with a pipeline flow regulating device as set above.

[0024] Furthermore, the shell body includes a pair of plate bodies attached to both sides of the battery core in the thickness direction, and the cooling pipes arranged in parallel are integrated in each of the plate bodies.

[0025] Furthermore, the shell body includes a cover plate located between a pair of the plate bodies and attached to the thickness surface of the battery core, and the liquid inlet pipe and the liquid outlet pipe connecting the pair of the plate bodies are arranged at intervals along the length direction of the battery core.

[0026] The battery cell shell of the utility model realizes heat exchange between the battery cell and the cooling medium in the shell body by arranging a shell body and a cooling pipe outside the battery cell; by assembling a pipeline flow regulating device on the liquid outlet pipe, the conduction state of the liquid outlet pipe is regulated according to the fluid temperature after the heat exchange; and the heat dissipation system provides better controlled temperature regulation according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0027] At the same time, compared with setting up water-cooling plates on the outside of multiple battery cells for heat conduction, better controlled temperature regulation can be achieved, and the function of integrating the water-cooling plates into the battery pack shell can be reduced, thereby reducing assembly and manufacturing pressure and achieving cost reduction.

[0028] Secondly, by arranging the plate bodies on both sides of the battery cell in the thickness direction, the contact area between the battery cell and the shell body is maximized while ensuring that the battery cell can be arranged and connected normally, thereby maximizing the heat dissipation efficiency adjustment capability.

[0029] In addition, the liquid inlet pipe and the liquid outlet pipe are arranged at intervals along the length direction of the battery cell, ensuring the circulation time of the cooling fluid in the shell body and the heat exchange time between the cooling fluid and the shell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0032] Figure 2 The first embodiment of the present utility model is a cross-sectional view showing the intercepting portion;

[0033] Figure 3 The first embodiment of the present utility model is a schematic diagram showing a first state;

[0034] Figure 4 The first embodiment of the present utility model is a schematic diagram showing the second state;

[0035] Figure 5 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0036] Figure 6 This is the second embodiment of the utility model Figure 5 A partial enlarged schematic diagram of part A;

[0037] Figure 7 The second embodiment of the present utility model is a schematic diagram showing some parts of the housing body;

[0038] Figure 8 The second embodiment of the present invention is a cross-sectional view showing a cooling pipe.

[0039] Description of reference numerals: 1. inclusion body;

[0040] 101. Rigid tube; 102. Elastic sealing plate;

[0041] 2. Interceptor;

[0042] 3. Temperature sensing drive unit;

[0043] 301, elastic bag; 302, temperature-sensitive gas;

[0044] 4. Pipeline;

[0045] 5. Battery cells;

[0046] 6. Shell body;

[0047] 601, plate body; 602, cover plate; 603, cooling pipe; 604, liquid inlet pipe; 605, liquid outlet pipe. DETAILED DESCRIPTION

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0049] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0051] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0052] Embodiment 1

[0053] This embodiment relates to a pipeline flow regulating device, so as to enable the heat dissipation system to provide better controlled temperature regulation according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0054] In terms of overall structure, the pipeline flow regulating device is arranged on the fluid delivery pipeline 4, and the regulating device comprises: an inclusion 1, which is fixedly connected to the outside of the pipeline 4, and the inclusion 1 has an elastic deformation amount greater than that of the pipeline 4;

[0055] The intercepting part 2 is fixed on the encapsulating body 1 and is inserted into the pipeline 4 by sliding from the outside of the pipeline 4. The intercepting part 2 has a first state in which it is partially retained in the pipeline 4 to partially conduct the pipeline 4, and a second state in which it can be driven to move and conduct the pipeline 4.

[0056] The temperature sensing driving part 3 acts between the inclusion body 1 and the pipeline 4. The temperature sensing driving part 3 expands or contracts due to the change of the temperature in the pipeline 4, so as to drive the inclusion body 1 to drive the intercepting part 2 to switch between the first state and the second state.

[0057] As set up above, the pipeline flow regulating device of this embodiment is provided with an inclusion body 1, so that the inclusion body 1 wraps the intercepting part 2 and the temperature-sensing driving part 3 and is connected with the pipeline 4. The fluid in the inclusion body 1 directly contacts the temperature-sensing driving part 3, so that the temperature-sensing driving part 3 expands or contracts with the temperature of the fluid in the pipeline 4, and then the intercepting part 2 slides in the pipeline 4 to achieve full or partial conduction of the pipeline 4. When the temperature of the fluid in the pipeline 4 is high, the temperature-sensing driving part 3 expands, driving the inclusion body 1 to undergo elastic deformation, so as to adjust the relative position of the intercepting part 2 and the pipeline 4. At this time, the pipeline 4 is fully conducted, the passage cross-sectional area of ​​the pipeline 4 is increased, and rapid heat dissipation is achieved; when the temperature of the fluid in the pipeline 4 is normal, the pipeline 4 is partially conducted to reduce the power of the heat dissipation system; and a better controlled temperature regulation is achieved according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0058] Based on the above overall introduction, Figures 1 to 4 As shown, one end of the inclusion body 1 is open, and the open end face of the inclusion body 1 is fixedly connected to the pipeline 4. The fixed connection here can be selected by welding or bonding to achieve a stable connection between the inclusion body 1 and the pipeline 4. The inclusion body 1 is made of rubber as a raw material; after the inclusion body 1 is connected to the pipeline 4, a receiving cavity is formed, and the intercepting part 2 and the temperature sensing driving part 3 are both located in the receiving cavity, and a through hole is provided on the circumferential side wall of the pipeline 4 to realize the communication between the pipeline 4 and the receiving cavity. The intercepting part 2 is a rectangular block structure, and one end of it is inserted into the pipeline 4.

[0059] In order to realize that the temperature sensing driving unit 3 quickly makes expansion or contraction feedback according to the temperature of the fluid in the pipeline 4, Figures 2 to 4 As shown, the temperature sensing driving unit 3 includes an elastic capsule 301 and a temperature sensing gas 302 sealed in the elastic capsule 301. By providing the elastic capsule 301 and the temperature sensing gas 302, the temperature sensing driving unit 3 can quickly make expansion or contraction feedback according to the temperature of the fluid in the pipeline 4; the elastic capsule 301 ensures that it can expand and deform while having good sealing performance; at the same time, the temperature sensing gas 302 will not produce fatigue during use and has better durability.

[0060] In order to make the pipeline flow regulating device more environmentally friendly and more in line with the needs of environmentally friendly construction, the temperature-sensitive gas 302 uses tetrafluoroethane; the use of tetrafluoroethane will not damage the ozone layer at all, and compared with other refrigerants, it has good thermal expansion capacity and is more environmentally friendly.

[0061] In order to avoid excessive expansion of the temperature sensing drive unit 3 and ensure the stability of the temperature sensing drive unit 3, as shown in FIG. Figures 2 to 4 As shown, the elastic capsule 301 is bound between the inner surface of the inclusion body 1 and the outer surface of the pipeline 4. The elastic capsule 301 is bound between the inner surface of the inclusion body 1 and the outer surface of the pipeline 4, ensuring that the elastic capsule 301 can directly contact the fluid in the pipeline 4 to expand or contract. At the same time, when the temperature of the fluid in the pipeline 4 is too high, the inclusion body 1 can limit the leakage or breakage caused by excessive expansion of the elastic capsule 301, but it does not affect the adjustment of the intercepting part 2 to keep the pipeline 4 in a fully conductive state.

[0062] For the purpose of ensuring the stability of the use of the temperature sensing drive unit 3 and in order to control the elastic deformation range of the enclosure 1, as another optional implementation, the enclosure 1 includes a rigid tube 101 and an elastic sealing plate 102. The rigid tube 101 is made of a hard material that is not easily deformed when subjected to force, such as steel, hard plastic, etc.; the elastic sealing plate 102 is made of rubber as a raw material; one end of the rigid tube 101 is fixedly connected to the circumferential outer wall of the pipeline 4, the elastic sealing plate 102 is fixedly connected to the remaining end of the rigid tube 101 and is sealed with the rigid tube 101, and the intercepting part 2 is fixedly connected to the elastic sealing plate 102. A accommodating cavity is formed between the rigid tube 101, the elastic sealing plate 102 and the pipeline 4, and a through hole is provided on the circumferential side wall of the pipeline 4 to realize the connection between the pipeline 4 and the accommodating cavity. When the temperature sensing drive unit 3 expands, the volume of the temperature sensing drive unit 3 increases, and under the restriction of the rigid tube 101, the elastic sealing plate 102 is elastically deformed along the axial direction of the rigid tube 101. The elastic sealing plate 102 is elastically deformed along the axial direction of the rigid tube 101, thereby driving the intercepting portion 2 to move, so that the pipeline 4 is completely conductive.

[0063] In order to facilitate the switching between the first state and the second state, Figures 2 to 4 As shown, at least two temperature-sensing drive parts 3 are provided. In this embodiment, two temperature-sensing drive parts 3 are provided, and the two temperature-sensing drive parts 3 are distributed on both sides of the intercepting part 2 along the axial direction of the pipeline 4. The temperature-sensing drive parts 3 distributed on both sides of the intercepting part 2 sense the temperature of the fluid in the pipeline 4 together, and make expansion or contraction reactions at the same time. The temperature-sensing drive parts 3 are provided on both sides of the intercepting part 2 so that the force on the intercepting part 2 is more balanced, and the switching between the first state and the second state is more convenient. Compared with providing the temperature-sensing drive part 3 on one side of the intercepting part 2, when the intercepting part 2 slides in a direction perpendicular to the pipeline 4, the intercepting part 2 will not have a tendency to tilt to one side due to the uneven force on the left and right sides, thereby reducing the friction between the intercepting part 2 and the pipeline.

[0064] In order to enable the interception part 2 to quickly respond to changes in the temperature sensing driving part 3, the interception part 2 is slidably inserted into the pipeline 4 along a direction perpendicular to the center line of the pipeline 4. The interception part 2 is slidably inserted into the pipeline 4 along a direction perpendicular to the center line of the pipeline 4, which enables the interception part 2 to adjust the conduction state of the pipeline 4 with the minimum displacement, reduces the stroke of the interception part 2, and achieves a rapid response of the adjustment device. Compared with the interception part 2 being inserted into the pipeline 4 at a certain angle to the center line of the pipeline 4, the interception part 2 is inserted into the pipeline 4 perpendicular to the center line of the pipeline 4, and the displacement required to switch between the first state and the second state is smaller.

[0065] When the pipeline flow regulating device of this embodiment is in use, according to the different temperatures of the fluid flowing into the pipeline 4, the temperature-sensing driving part 3 expands or contracts in volume due to the change in the temperature in the pipeline 4, thereby driving the inclusion 1 to drive the intercepting part 2 to switch between the first state and the second state. By setting the inclusion 1, when the temperature of the fluid in the pipeline 4 is high, the temperature-sensing driving part 3 expands, driving the inclusion 1 to undergo elastic deformation, so as to adjust the relative position of the intercepting part 2 and the pipeline 4. At this time, the pipeline 4 is fully conductive, increasing the passage cross-sectional area of ​​the pipeline 4 and realizing rapid heat dissipation; when the temperature of the fluid in the pipeline 4 is normal, the pipeline 4 is partially conductive to reduce the power of the heat dissipation system; and it realizes the temperature regulation with better control according to the different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0066] Embodiment 2

[0067] The present embodiment relates to a battery cell 5 housing, including a housing body 6 encapsulated outside the battery cell 5, a cooling pipe 603 with a liquid inlet pipe 604 and a liquid outlet pipe 605 integrated in at least a portion of the housing body 6, and a pipeline flow regulating device as described above is arranged on the liquid outlet pipe 605. Specifically, the pipeline 4 in the pipeline flow regulating device is communicated with the liquid outlet pipe 605 and fixedly connected.

[0068] Based on the above overall introduction, Figures 5 to 8 As shown, by arranging the shell body 6 and the cooling pipe 603 outside the battery cell 5, heat exchange between the battery cell 5 and the cooling medium in the shell body 6 is realized; by assembling the pipeline flow regulating device on the liquid outlet pipe 605, the conduction state of the liquid outlet pipe 605 is adjusted according to the fluid temperature after the heat exchange; the heat dissipation system provides better controlled temperature regulation according to different temperature states of the power battery, so as to improve the performance and life of the power battery.

[0069] In order to facilitate heat exchange between the battery core 5 and the fluid in the shell body 6, Figures 5 to 8As shown, the shell body 6 includes a pair of plate bodies 601 attached to both sides of the battery core 5 in the thickness direction, and each shell body 6 is respectively integrated with a cooling pipe 603 arranged in parallel. By arranging the plate bodies 601 on both sides of the battery core 5 in the thickness direction, the contact area between the battery core 5 and the shell body 6 is maximized while ensuring that the battery core 5 can be arranged and connected normally, thereby maximizing the heat dissipation efficiency adjustment capability.

[0070] In order to ensure the heat exchange time between the cooling fluid and the shell body 6, the shell body 6 includes a cover plate 602 located between the pair of plate bodies 601 and attached to the thickness surface of the battery core 5, and the liquid inlet pipe 604 and the liquid outlet pipe 605 connected to the pair of plate bodies 601 are arranged at intervals along the length direction of the battery core 5. The liquid inlet pipe 604 and the liquid outlet pipe 605 are arranged at intervals along the length direction of the battery core 5, ensuring the circulation time of the cooling fluid in the shell body 6 and the heat exchange time between the cooling fluid and the shell body 6.

[0071] When the battery cell 5 shell of this embodiment is in use, there is a liquid inlet pipe 604 to pass the cooling medium into the shell body 6. After the heat exchange between the cooling medium and the battery cell 5 is realized, the cooling medium flows out of the shell body 6 through the liquid outlet pipe 605. When the cooling medium flows out of the shell body 6, the pipeline flow regulating device adjusts the flow rate of the cooling medium per unit time by the temperature of the cooling medium flowing into the pipeline, thereby realizing better controlled temperature regulation according to different temperatures of the power battery, so as to improve the performance and life of the power battery. At the same time, compared with setting a water cooling plate for heat conduction on the outside of multiple battery cells 5, better controlled temperature regulation can be achieved, and the function of the integrated water cooling plate of the battery pack shell can be reduced, reducing the assembly and manufacturing pressure and achieving cost reduction.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline flow regulating device, arranged on a fluid delivery pipeline, characterized in that: The regulating device comprises: An inclusion body, fixedly connected to the outside of the pipeline, wherein the inclusion body has an elastic deformation amount greater than that of the pipeline; A shutoff portion is fixed to the enclosure and is inserted into the pipeline by sliding from the outside of the pipeline, wherein the shutoff portion has a first state in which it is partially retained in the pipeline to partially open the pipeline, and a second state in which it can be driven to move and open the pipeline; The temperature-sensing driving part acts between the inclusion body and the pipeline. The temperature-sensing driving part expands or contracts due to sensing the temperature change in the pipeline, so as to drive the inclusion body to drive the intercepting part to switch between the first state and the second state.

2. The pipeline flow regulating device according to claim 1, characterized in that: The temperature-sensing driving part includes an elastic bag and a temperature-sensing gas sealed in the elastic bag.

3. The pipeline flow regulating device according to claim 2, characterized in that: The temperature sensitive gas is tetrafluoroethane.

4. The pipeline flow regulating device according to claim 2, characterized in that: The elastic bladder is constrained between the inner surface of the enclosure and the outer surface of the tubing.

5. The pipeline flow regulating device according to claim 2, characterized in that: The number of the temperature-sensing driving parts is at least two, and the two temperature-sensing driving parts are distributed on both sides of the intercepting part along the axial direction of the pipeline.

6. The pipeline flow regulating device according to claim 1, characterized in that: The inclusion body is made of rubber material.

7. The pipeline flow regulating device according to any one of claims 1 to 6, characterized in that: The intercepting portion is slidably inserted into the pipeline along a direction perpendicular to the center line of the pipeline.

8. A battery cell shell, comprising a shell body encapsulated outside the battery cell, wherein at least a portion of the shell body is integrated with a cooling pipe with a liquid inlet pipe and a liquid outlet pipe, characterized in that: The liquid outlet pipe is provided with a pipeline flow regulating device as claimed in any one of claims 1 to 7.

9. The battery cell casing according to claim 8, characterized in that: The shell body includes a pair of plate bodies attached to both sides of the battery core in the thickness direction, and the cooling pipes arranged in parallel are integrated in each of the plate bodies.

10. The battery cell casing according to claim 9, characterized in that: The shell body includes a cover plate located between a pair of plate bodies and attached to the thickness surface of the battery core. The liquid inlet pipe and the liquid outlet pipe connecting the pair of plate bodies are arranged at intervals along the length direction of the battery core.

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