Battery box water cooling assembly

Abstract

The battery box water cooling assembly comprises a water inlet pipeline, a water return pipeline and a water injection pipe. The water inlet pipeline extends in the longitudinal direction, an on-off valve is arranged at the top end of the water inlet pipeline, the water inlet pipeline is used for being connected with water inlets of battery packs, the water return pipeline is used for being connected with water outlets of the battery packs, and the water injection pipe is connected to the water inlet pipeline or the water return pipeline. The battery box water cooling assembly is provided with the on-off valve, the water injection pipe, the water inlet pipeline and the water return pipeline are all communicated, when cooling liquid is injected into the water inlet pipeline or the water return pipeline through the water injection pipe, gas existing in the pipeline can be emptied through the on-off valve under the action of water pressure, vacuum liquid injection is not needed, and the water cooling efficiency is improved. The vacuum liquid injection is not needed in later maintenance, the requirements for equipment and environment are not high, the selectivity of liquid injection and maintenance sites is high, and the cost is low. And if the liquid needs to be discharged, the on-off valve is opened, so that the pipeline is communicated with the atmosphere, the cooling liquid in the pipeline can be smoothly discharged, and the discharged cooling liquid can be secondarily used.

Description

Technical Field

[0001] The utility model relates to the technical field of battery box cooling, in particular to a water-cooling component for a battery box. Background Art

[0002] The battery box used in an electric heavy truck is large in size and high in power. Therefore, a dedicated water-cooling component is equipped for the battery box. The water-cooling component includes liquid-cooling pipes. Before use, a certain amount of coolant needs to be poured into the liquid-cooling pipes. The circulating coolant can exchange heat with the battery box. Moreover, after the water-cooling component works for a period of time, the coolant inside the liquid-cooling pipes will be lost, and the coolant also needs to be replenished into the water-cooling component regularly.

[0003] When the existing water-cooling component for heavy trucks injects liquid into the liquid-cooling pipes, vacuum injection is required. Vacuum injection requires dedicated equipment and has high requirements for the injection environment. If the liquid is injected without reaching the vacuum injection environment, the air inside the water-cooling component cannot be completely discharged, which will affect the efficiency and service life of the water-cooling machine. Moreover, the existing cooling component needs to rely on vacuum injection for later maintenance, which is troublesome and costly. When repairing and returning, there will also be difficulties in draining the liquid, and at the same time, the coolant cannot be reused.

[0004] In view of this, the present utility model is particularly proposed. Content of the Utility Model

[0005] The utility model provides a water-cooling component for a battery box.

[0006] The utility model adopts the following technical solutions:

[0007] The purpose of the present application is to provide a water-cooling component for a battery box, including:

[0008] An inlet water pipe, the inlet water pipe extends longitudinally, a on-off valve is arranged at the top of the inlet water pipe, and the inlet water pipe is used to connect the water inlet of the battery pack;

[0009] A return water pipe, the return water pipe is used to connect to the water outlets of each battery pack;

[0010] A water injection pipe, the water injection pipe is connected to the inlet water pipe or the return water pipe.

[0011] Optionally, the on-off valve includes a valve body, a movable part and an elastic part;

[0012] The valve body is connected to the inlet water pipe, the valve body has a valve cavity, a sealing and matching part is arranged on the inner wall of the valve cavity, the valve cavity has an upper valve cavity and a lower valve cavity on both sides of the sealing and matching part, the lower valve cavity communicates with the inlet water pipe, and the sealing and matching part has a communication port for communicating the upper valve cavity and the lower valve cavity;

[0013] The movable member is movably arranged on the valve body. The movable member has a communication cavity, and the communication cavity communicates with the water inlet pipeline. The elastic member abuts against the valve body and the movable member respectively;

[0014] Under the action of an external force, the movable member can move towards the side away from the sealing and mating portion, the deformation of the elastic member increases, and the communication cavity of the movable member communicates with the upper valve cavity. When the external force is withdrawn, the elastic member restores its deformation, pushes the movable member to reset, the movable member closes the communication port of the sealing and mating portion, and the upper valve cavity is isolated from the communication cavity.

[0015] Optionally, a sealing portion is arranged on the movable member;

[0016] A transition cavity is formed between the inner wall of the valve body and the movable member;

[0017] The communication cavity of the movable member communicates with the transition cavity;

[0018] Under the action of an external force, the sealing portion moves away from the communication port, and the transition cavity communicates with the upper valve cavity. When the external force is withdrawn, the elastic member restores its deformation, pushes the movable member to reset, the sealing portion closes the gap between the movable member and the communication port, and the transition cavity is isolated from the upper valve cavity.

[0019] Optionally, an air vent hole communicating the transition cavity and the communication cavity is arranged on the movable member.

[0020] Optionally, the sealing portion includes a sealing ring arranged on the outer wall of the movable member.

[0021] Optionally, the movable member includes an upper shell portion and a middle shell portion. The outer diameter of the upper shell portion is smaller than that of the middle shell portion, and an annular step is formed between the upper shell portion and the middle shell portion;

[0022] The sealing ring is sleeved on the upper shell portion, and the sealing ring is limited on the annular step. The air vent hole is arranged on the middle shell portion, and the upper shell portion is slidably arranged through the communication port.

[0023] Optionally, the movable member includes a lower shell portion, and the lower shell portion is connected to the middle shell portion;

[0024] A support ring is formed between the middle shell portion and the lower shell portion;

[0025] Part of the elastic member is located inside the lower shell portion, and the elastic member abuts against the support ring.

[0026] Optionally, a sealing ring is compressively arranged between the sealing and mating portion and the inner wall of the valve cavity.

[0027] Optionally, a clamping mechanism is provided in the upper valve cavity, and when the conducting tube extends into the upper valve cavity and abuts against the movable member so that the communicating cavity is connected to the upper valve cavity, the clamping mechanism clamps and fixes the conducting tube.

[0028] Optionally, the clamping mechanism includes a connecting ring and a clamping ring arranged on the connecting ring;

[0029] The connecting ring is arranged in the upper valve cavity, and the connecting ring and the inner wall of the upper valve cavity are interference fit;

[0030] The clamping ring includes a plurality of spring pieces, and each of the spring pieces is sequentially spaced apart along the circumference of the connecting ring.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects:

[0032] The battery box water cooling assembly of the present application is provided with an on-off valve, and the water injection pipe, water inlet pipeline and water return pipeline are all connected. The on-off valve is provided on the water inlet pipeline. When the water injection pipe injects coolant into the water inlet pipeline or the water return pipeline, the gas existing in the pipeline can be emptied by the on-off valve under the action of water pressure, without the need for vacuum injection, and later maintenance does not require the use of vacuum injection. The requirements for equipment and environment are not high. Therefore, the injection and maintenance locations are highly optional and the cost is low. In addition, if there is a need to drain the liquid, open the on-off valve, the coolant in the pipeline can be discharged smoothly, and the discharged coolant can be used twice.

[0033] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0035] Figure 1 A schematic diagram of the three-dimensional structure of a battery box water cooling assembly provided in an embodiment of the present application is shown;

[0036] Figure 2 A schematic diagram of the main structure of the on-off valve of the battery box water cooling assembly provided in an embodiment of the present application is shown;

[0037] Figure 3 A schematic cross-sectional structure diagram of an on-off valve of a battery box water cooling assembly provided in an embodiment of the present application is shown;

[0038] Figure 4 The sectional structure schematic diagram of the valve body of the on-off valve of the battery box water cooling assembly provided by the embodiment of the present application is shown;

[0039] Figure 5 The mating structure schematic diagram of the moving part and the plugging part of the on-off valve of the battery box water cooling assembly provided by the embodiment of the present application is shown;

[0040] Figure 6 The structure schematic diagram of the clamping ring of the on-off valve of the battery box water cooling assembly provided by the embodiment of the present application is shown.

[0041] In the figure: water inlet pipeline 1, water return pipeline 2, water injection pipeline 3, on-off valve 4, valve body 41, valve cavity 411, upper valve cavity 4111, lower valve cavity 4112, moving part 42, upper shell part 421, middle shell part 422, lower shell part 423, annular step 4201, support ring 4202, communication cavity 4203, air vent hole 4204, elastic part 43, plugging cooperation part 44, plugging part 45, sealing ring 46, clamping mechanism 47, connecting ring 471, clamping ring 472, elastic piece part 4721.

[0042] It should be noted that these drawings and text descriptions are not intended to limit the concept scope of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation" and "connection" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] SeeFigures 1 to 6 As shown in Figures 1 to 6 , an embodiment of the present application provides a water-cooling assembly for a battery box, which includes an inlet water pipeline 1, a return water pipeline 2, and a water injection pipeline 3. The inlet water pipeline 1 extends longitudinally. A on-off valve 4 is provided at the top end of the inlet water pipeline 1. The inlet water pipeline 1 is used to connect to the water inlet of the battery pack. The return water pipeline 2 is used to connect to the water outlets of the respective battery packs. The water injection pipeline 3 is connected to the inlet water pipeline 1 or the return water pipeline 2. The water-cooling assembly of the present application is provided with a on-off valve 4. The water injection pipeline 3, the inlet water pipeline 1, and the return water pipeline 2 are all connected. The on-off valve 4 is provided on the inlet water pipeline 1. When injecting coolant from the water injection pipeline 3 into the inlet water pipeline 1 or the return water pipeline 2, the gas originally present in the pipeline can be emptied by the on-off valve 4 under the action of water pressure. There is no need to use vacuum liquid injection, and there is also no need to rely on vacuum liquid injection for later maintenance. The requirements for equipment and the environment are not high. Therefore, the options for liquid injection and maintenance locations are numerous, and the cost is also low. Moreover, if there is a need to drain the liquid, by opening the on-off valve 4, the pipeline is connected to the atmosphere, and the coolant in the pipeline can be smoothly drained, and the drained coolant can also be reused. Among them, the on-off valve 4 is provided at the top end of the inlet water pipeline 1, which can ensure that the coolant can squeeze out all the gas in the pipeline, ensuring that there is no gas in each pipeline.

[0047] A plurality of inlet water branch pipes can be provided on the inlet water pipeline 1, and a plurality of return water branch pipes can be provided on the return water pipeline. Each inlet water branch pipe is respectively connected to the water inlet of the corresponding battery pack, and each return water branch pipe is respectively connected to the water outlet of the corresponding battery pack. The inlet water pipeline, the battery pack, and the return water pipeline form a closed circulation pipeline.

[0048] In some possible implementation schemes, the on-off valve 4 includes a valve body 41, a movable member 42, and an elastic member 43. The valve body 41 can be connected to the top end of the inlet water pipeline 1. The valve body 41 has a valve cavity 411. A sealing and matching portion 44 is provided on the inner wall of the valve cavity 411. The valve cavity 411 has an upper valve cavity 4111 and a lower valve cavity 4112 on both sides of the sealing and matching portion 44. The lower valve cavity 4112 communicates with the inlet water pipeline 1. The sealing and matching portion 44 has a communication port that communicates the upper valve cavity 4111 and the lower valve cavity 4112. The movable member 42 is movably provided in the valve body 41. The movable member 42 has a communication cavity 4203, and the communication cavity 4203 communicates with the inlet water pipeline 1. The elastic member 43 respectively abuts against the valve body 41 and the movable member 42. Under the action of an external force, the movable member 42 can move to the side away from the sealing and matching portion 44, the deformation amount of the elastic member increases, and the communication cavity 4203 of the movable member 42 communicates with the upper valve cavity 4111. When the external force is withdrawn, the elastic member restores its deformation, pushes the movable member 42 to reset, the movable member 42 closes the communication port of the sealing and matching portion 44, and the upper valve cavity 4111 and the communication cavity 4203 are isolated from each other.

[0049] The top of the valve body 41 has an exhaust port, which is communicated with the upper valve cavity 4111. When it is necessary to exhaust through the on-off valve 4, a conduction tube is used to apply a force to the movable part 42 towards the lower valve cavity 4112. The movable part 42 is compressed by the external force and moves towards the side away from the plugging and matching part 44 under the action of the elastic part, and the gas in the water inlet pipeline 1 can then be discharged through the communication cavity 4203, the upper valve cavity 4111 and the exhaust port. After the exhaust is completed, the conduction tube is removed. The movable part 42 moves towards the side close to the plugging part 45 under the elastic force of the compressed elastic part. The plugging part 45 and the movable part 42 cooperate to plug the communication port, so that the upper valve cavity 4111 and the lower valve cavity 4112 cannot communicate with each other, ensuring that no air enters or liquid leaks through the on-off valve 4 during the use of the battery box water cooling assembly.

[0050] In some possible implementation schemes, a plugging part 45 is arranged on the movable part 42, a transition cavity is formed between the inner wall of the valve body 41 and the movable part 42, and the communication cavity 4203 of the movable part 42 communicates with the transition cavity. Under the action of an external force, the plugging part 45 moves away from the communication port, and the transition cavity communicates with the upper valve cavity 4111; when the external force is withdrawn, the elastic part restores its deformation and pushes the movable part 42 to reset. The plugging part 45 closes the gap between the movable part 42 and the communication port, and the transition cavity is isolated from the upper valve cavity 4111. Among them, the transition cavity is located in the lower valve cavity 4112. When it is necessary to exhaust through the on-off valve 4, a conduction tube is used to apply a force to the movable part 42 towards the lower valve cavity 4112. The movable part 42 is compressed by the external force and moves towards the side away from the plugging and matching part 44 under the action of the elastic part, and the gas in the pipeline can flow through the communication cavity 4203, the transition cavity and the upper valve cavity 4111 in sequence and then be discharged through the exhaust port. After the exhaust is completed, the conduction tube is removed. The movable part 42 moves towards the side close to the plugging part 45 under the elastic force of the compressed elastic part. The plugging part 45 and the plugging and matching part 44 plug the communication port, so that the upper valve cavity 4111 and the lower valve cavity 4112 cannot communicate with each other.

[0051] In some possible implementation schemes, an air hole 4204 communicating the transition cavity and the communication cavity 4203 is arranged on the movable part 42. Preferably, a plurality of air holes 4204 are arranged. The plurality of air holes 4204 are sequentially arranged along the circumferential direction of the movable part 42. The plurality of air holes 4204 can divert gas or liquid, reducing the possibility of gas or liquid breaking through the plugging. Further, the fluid movement direction at the air hole 4204 is perpendicular to the fluid movement direction at the communication port. The change of the air flow direction at the air hole 4204 prevents the air flow from directly hitting the plugging part 45, further reducing the possibility of gas or liquid breaking through the plugging.

[0052] In some possible embodiments, the plugging portion 45 includes a sealing ring disposed on the outer wall of the movable member 42. The sealing ring has a certain elasticity. A notch for cooperating with the plugging portion 45 is provided on the plugging cooperation portion 44. The elastic member presses the movable member 42 so that the plugging portion 45 is pressed against the notch, ensuring a good sealing effect.

[0053] In some possible embodiments, the movable member 42 includes an upper housing portion 421 and a middle housing portion 422. The outer diameter of the upper housing portion 421 is smaller than that of the middle housing portion 422, and an annular step 4201 is formed between the upper housing portion 421 and the middle housing portion 422. The sealing ring is sleeved on the upper housing portion 421 and is limited to the annular step 4201. The air vent 4204 is provided on the middle housing portion 422, and the upper housing portion 421 slidably penetrates through the communication port. The bottom of the plugging cooperation portion 44 is provided with a communication port. The side of the upper housing portion 421 away from the middle housing portion 422 is inserted into the plugging cooperation portion 44 through the communication port, and the upper housing portion 421 can move up and down along the communication port. When the movable member 42 is not affected by an external force, the upper housing portion 421 and the middle housing portion 422 of the movable member 42, and the annular step 4201 abuts against the bottom of the plugging cooperation portion 44 to prevent the movable member 42 from moving upward continuously. The sealing ring is arranged on the annular step 4201 and is subjected to the greatest squeezing force, and the sealing effect is optimal.

[0054] In some possible embodiments, the movable member 42 includes a lower housing portion 423. The lower housing portion 423 is connected to the middle housing portion 422, and a support ring 4202 is formed between the middle housing portion 422 and the lower housing portion 423. Part of the elastic member is located inside the lower housing portion 423, and the elastic member abuts against the support ring 4202. The support ring 4202 limits the elastic member, so that when the movable member 42 is pressed by force, the elastic member will also be compressed, and the resilience of the elastic member is directly applied to the movable member 42 through the support ring 4202. When the external force applied to the movable member 42 is withdrawn, the elastic member can smoothly bounce up the movable member 42, thereby plugging the communication port. Among them, the elastic member can be a spring. One end of the spring is limited on the support ring 4202, and the other end is limited on the inner wall of the bottom of the valve body 41.

[0055] In some possible embodiments, a sealing ring 46 is compressively arranged between the plugging cooperation portion 44 and the inner wall of the valve cavity 411. The arrangement of the sealing ring 46 prevents fluid from flowing into the pipeline between the plugging cooperation portion 44 and the valve body 41, ensuring the sealing effect of the on-off valve 4.

[0056] In some possible implementation embodiments, a clamping mechanism 47 is disposed in the upper valve cavity 4111. When the conduction pipe extends into the upper valve cavity 4111 and abuts against the movable member 42 such that the communication cavity 4203 communicates with the upper valve cavity 4111, the clamping mechanism clamps and fixes the conduction pipe. This ensures that the state of the conduction pipe inserted into the valve cavity 411 and pressing down the movable member 42 can be maintained without the application of external force, making the operation more convenient and labor-saving.

[0057] In some possible implementation embodiments, the clamping mechanism 47 includes a connecting ring 471 and a clamping ring 472 disposed on the connecting ring 471. The connecting ring 471 is disposed in the upper valve cavity 4111, and the connecting ring 471 and the inner wall of the upper valve cavity 4111 are in interference fit. The clamping ring 472 includes a plurality of elastic piece portions 4721, and each of the elastic piece portions 4721 is sequentially and spaced apart along the circumferential direction of the connecting ring 471. The elastic piece portion 4721 has a certain elasticity, which does not affect the insertion of the conduction pipe therein and can ensure that the conduction pipe is clamped stably. Preferably, the plurality of elastic piece portions 4721 are spaced apart along the inner circumference of the connecting ring 471.

[0058] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent can make some changes or modifications to equivalent embodiments by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A battery box water cooling component, characterized in that, Comprising: An inlet pipeline that extends longitudinally, with a on-off valve provided at the top end of the inlet pipeline, and the inlet pipeline is used to connect to the water inlet of the battery pack; A return pipeline that is used to connect to the water outlets of each battery pack; A water injection pipe that is connected to the inlet pipeline or the return pipeline.

2. The battery box water cooling assembly according to claim 1, wherein, The on-off valve includes a valve body, a movable member, and an elastic member; The valve body is connected to the inlet pipeline, the valve body has a valve cavity, a sealing and mating portion is provided on the inner wall of the valve cavity, the valve cavity has an upper valve cavity and a lower valve cavity on both sides of the sealing and mating portion, the lower valve cavity communicates with the inlet pipeline, and the sealing and mating portion has a communication port that communicates the upper valve cavity and the lower valve cavity; The movable member is movably provided in the valve body, the movable member has a communication cavity that communicates with the inlet pipeline, and the elastic member abuts against the valve body and the movable member respectively; Under the action of an external force, the movable member can move towards the side away from the sealing and mating portion, the deformation of the elastic member increases, and the communication cavity of the movable member communicates with the upper valve cavity; when the external force is withdrawn, the elastic member restores its deformation, pushes the movable member to reset, the movable member closes the communication port of the sealing and mating portion, and the upper valve cavity and the communication cavity are isolated from each other.

3. The battery box water cooling assembly according to claim 2, wherein, A sealing portion is provided on the movable member; A transition cavity is formed between the inner wall of the valve body and the movable member; The communication cavity of the movable member communicates with the transition cavity; Under the action of an external force, the sealing portion moves away from the communication port, and the transition cavity communicates with the upper valve cavity; when the external force is withdrawn, the elastic member restores its deformation, pushes the movable member to reset, the sealing portion closes the gap between the movable member and the communication port, and the transition cavity and the upper valve cavity are isolated from each other.

4. The battery box water cooling assembly according to claim 3, wherein, An air vent hole that communicates the transition cavity and the communication cavity is provided on the movable member.

5. The battery box water cooling assembly according to claim 4, characterized in that, The sealing portion includes a sealing ring provided on the outer wall of the movable member.

6. The battery box water cooling assembly according to claim 5, wherein, The movable member includes an upper shell portion and a middle shell portion, the outer diameter of the upper shell portion is smaller than the outer diameter of the middle shell portion, and an annular step is formed between the upper shell portion and the middle shell portion; The sealing ring is sleeved on the upper shell portion, and the sealing ring is limited on the annular step, the air vent hole is provided on the middle shell portion, and the upper shell portion slidably penetrates through the communication port.

7. The battery box water cooling assembly according to claim 6, wherein The movable member includes a lower shell portion, and the lower shell portion is connected to the middle shell portion; A support ring is formed between the middle shell portion and the lower shell portion; Part of the elastic member is located inside the lower shell portion, and the elastic member abuts against the support ring.

8. The battery box water cooling assembly according to claim 2, characterized in that, A sealing ring is compressively arranged between the sealing and mating portion and the inner wall of the valve cavity.

9. The battery box water cooling assembly according to claim 2, wherein A clamping mechanism is provided in the upper valve cavity. In a state where the conduction pipe extends into the upper valve cavity and abuts against the movable member so that the communication cavity communicates with the upper valve cavity, the clamping mechanism clamps and fixes the conduction pipe.

10. The battery box water cooling assembly according to claim 9, characterized in that, The clamping mechanism includes a connecting ring and a clamping ring provided on the connecting ring; The connecting ring is provided in the upper valve cavity, and the connecting ring and the inner wall of the upper valve cavity are in interference fit; The clamping ring includes a plurality of elastic sheet portions, and the elastic sheet portions are sequentially arranged at intervals along the circumference of the connecting ring.

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