Fully-immersed liquid-cooled energy storage battery

Abstract

The invention discloses a fully-immersed liquid-cooled energy storage battery which comprises a lower shell, a liquid cooling device is mounted on the lower shell, the liquid cooling device comprises an upper shell, a liquid inlet pipe and a liquid outlet pipe, the upper shell is mounted on the lower shell, the liquid inlet pipe and the liquid outlet pipe are both connected to one side of the lower shell, and one end of the liquid inlet pipe and one end of the liquid outlet pipe are both connected with an adjusting device. The adjusting device comprises a fixing pipe, a rotating sleeve, a lead screw, an inner gear, an elastic plate, an outer gear, a fixing frame and a sliding frame, the lead screw is arranged on the inner side of the fixing pipe, the inner gear is connected into the rotating sleeve, the outer gear is connected to the outer side of the lead screw, the two ends of the elastic plate are connected with the sliding frame and the fixing frame respectively, and a driving mechanism is arranged on the outer side of the rotating sleeve. The driving mechanism comprises a driven wheel, a motor, a fixing plate and a driving wheel, the driven wheel is connected to the outer side of the rotating sleeve, the motor is installed on one side of the fixing plate, and the output end of the motor is connected with the driving wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of fully immersed liquid-cooled energy storage batteries, and more specifically, to a fully immersed liquid-cooled energy storage battery. Background Art

[0002] In the current field of energy storage battery technology, there are still some significant problems and challenges in the existing technology, which limit the efficiency and performance of energy storage systems.

[0003] First of all, the mainstream battery energy storage systems on the market are mainly divided into two categories: air-cooled battery energy storage systems and cold plate liquid-cooled battery energy storage systems. Both systems achieve cooling through heat exchange between air and battery cells. However, the thermal conductivity of air is relatively low. This characteristic causes these systems to perform poorly in terms of cooling efficiency, which is specifically manifested in low cooling efficiency and long cooling time. This inefficient cooling process not only affects the performance and life of the battery, but may also cause safety hazards under high load conditions.

[0004] In order to solve the above problems, some innovative technical solutions have emerged. One of the methods is to completely immerse the battery cell in insulating cooling oil and use an oil circulation system and a refrigeration system to dissipate heat from the battery cell. However, this method also faces new challenges in practical applications. The most prominent problem is that there is usually a lack of flexible control mechanism for the input and output flow rates of the insulating cooling oil. This lack of control makes it impossible for the cooling system to dynamically adjust the cooling intensity according to the real-time working status and environmental conditions of the battery, thereby affecting the accuracy of the cooling effect and the overall efficiency of the system.

[0005] In order to further improve the fully immersed liquid cooling system, some equipment manufacturers have begun to try to introduce devices that can adjust the flow rate of insulating cooling oil. However, these devices often have problems with simple structure and limited functions. The most common design requires manual adjustment, which brings many inconveniences in practical applications. In the prior art, battery packs are usually installed inside other equipment, which makes manual adjustment extremely difficult, and even completely impossible in some cases. More importantly, this manual adjustment method cannot make timely and accurate adjustments based on the real-time usage of the battery and environmental changes. This lag and inaccuracy may lead to poor cooling effects. In addition, the manual adjustment system also faces the risk of human operation errors. Operators may lack professional knowledge or experience and cannot accurately judge the optimal cooling oil flow rate, which may lead to insufficient cooling or excessive cooling, both of which will have a negative impact on the performance and life of the battery. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the problems existing in the prior art, the present invention provides a fully immersed liquid-cooled energy storage battery to solve the technical problems mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully immersed liquid-cooled energy storage battery, comprising a lower shell, characterized in that: a liquid cooling device is installed on the lower shell, the liquid cooling device comprises an upper shell, a liquid inlet pipe and a liquid outlet pipe, the upper shell is detachably mounted on the lower shell, the liquid inlet pipe and the liquid outlet pipe are both connected to one side of the lower shell, one end of the liquid inlet pipe and the liquid outlet pipe are both connected to an adjusting device, the adjusting device comprises a fixed pipe, a rotating sleeve, a lead screw, an internal gear, an elastic plate, an external gear, a fixed frame and a sliding frame, the fixed pipe is respectively fixedly connected to one end of the liquid outlet pipe and the liquid inlet pipe The rotating sleeve is rotatably connected to the other end of the fixed tube, the lead screw is arranged on the inner side of the fixed tube, the internal gear is fixedly connected in the rotating sleeve, the external gear is fixedly connected to the outer side of the lead screw, and the internal gear and the external gear are meshed, the two ends of the elastic plate are respectively connected to the sliding frame and the fixed frame, and a driving mechanism is arranged on the outer side of the rotating sleeve, the driving mechanism includes a driven wheel, a motor, a fixed plate and a driving wheel, the driven wheel is fixedly connected to the outer side of the rotating sleeve, the motor is detachably mounted on one side of the fixed plate, the output end of the motor is connected to the driving wheel, and the driving wheel and the driven wheel are meshed.

[0010] The present invention is further configured such that a connecting pipe is provided at one end of the rotating sleeve, the rotating sleeve and the connecting pipe are rotatably connected, the other end of the connecting pipe is connected to an external device, the fixing frame is fixedly connected in the connecting pipe, and the fixing plate is fixedly connected to the outside of the connecting pipe.

[0011] The present invention is further configured such that a sliding block is provided on the outer side of the sliding frame, a sliding groove is provided in the fixing tube, the sliding groove is adapted to the sliding block, and the configuration of the sliding block and the sliding groove makes the movement of the sliding frame more stable.

[0012] The present invention is further configured such that a mounting plate is provided on the outer side of the lower shell, and the connecting pipe is detachably mounted on the mounting plate. The provision of the mounting plate facilitates fixing of the connecting pipe.

[0013] The present invention is further configured such that a DC terminal and a communication port are provided on one side of the upper shell.

[0014] The present invention is further configured such that a threaded sleeve is connected to the outer side of the lower shell, a bolt is provided on the outer side of the upper shell, and the bolt is detachably installed in the threaded sleeve via a thread.

[0015] The present invention is further configured such that a fixing ear is connected to the top end of the bolt, and the setting of the fixing ear facilitates the rotation of the bolt.

[0016] The present invention is further configured such that a sealing strip is provided on one side of the upper shell, and the sealing strip is detachably installed between the upper shell and the lower shell. The provision of the sealing strip enhances the sealing performance of the joint.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a fully immersed liquid-cooled energy storage battery having the following

[0019] Beneficial effects:

[0020] 1. The design of the liquid cooling device cleverly solves the problem of low cooling efficiency of traditional air cooling and cold plate liquid cooling systems. By completely immersing the battery cells in insulating cooling oil, all-round and efficient heat exchange is achieved. The detachable design of the upper and lower shells facilitates maintenance and repair, while the setting of the liquid inlet and outlet pipes ensures the continuous circulation of the cooling oil. The application of sealing strips enhances the sealing of the system and effectively prevents cooling oil leakage. This fully immersed liquid cooling solution significantly improves the cooling efficiency, shortens the cooling time, provides a more stable working environment for the battery, and thus extends the battery life.

[0021] 2. The innovative design of the adjustment device solves the problem that the flow rate of the insulating cooling oil cannot be flexibly controlled in the prior art. The adjustment of the cooling oil flow rate is achieved through the precise coordination of the fixed tube, rotating sleeve, lead screw, internal gear, elastic plate, external gear, fixed frame and sliding frame. The design of the slider and the slide groove ensures the smoothness and accuracy of the adjustment process. This mechanical adjustment scheme not only improves the reliability of the system, but also improves the adaptability and efficiency of the cooling system.

[0022] 3. The design of the drive mechanism cleverly solves the problems of inconvenience of manual adjustment and inability to respond in real time. Through the combination of the motor, driving wheel, driven wheel and fixed plate, mechanized control of the adjustment device is realized. This design not only eliminates human operation errors, but also can adjust the flow rate of the cooling oil in real time according to the signal of the external device. This mechanized drive mechanism enables the cooling system to be adjusted in real time and accurately according to the use of the battery, thereby optimizing the working environment of the battery and improving the efficiency and reliability of the entire energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a fully immersed liquid-cooled energy storage battery in the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0025] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 4 It is a cross-sectional structural schematic diagram of the adjusting device and the driving mechanism part of the present invention;

[0027] Figure 5 It is a schematic cross-sectional structure diagram of the adjusting device and the driving mechanism part at a second angle in the present invention.

[0028] In the figure: 1. lower shell; 2. upper shell; 3. liquid inlet pipe; 4. liquid outlet pipe; 5. fixed pipe; 6. rotating sleeve; 7. lead screw; 8. internal gear; 9. elastic plate; 10. external gear; 11. fixed frame; 12. sliding frame; 13. driven wheel; 14. motor; 15. fixed plate; 16. driving wheel; 17. connecting pipe; 18. slider; 19. slide groove; 20. mounting plate; 21. DC terminal; 22. communication port; 23. screw sleeve; 24. bolt; 25. fixing ear; 26. sealing strip. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figure 1-5A fully immersed liquid-cooled energy storage battery comprises a lower shell 1, characterized in that: a liquid cooling device is installed on the lower shell 1, the liquid cooling device comprises an upper shell 2, a liquid inlet pipe 3 and a liquid outlet pipe 4, the upper shell 2 is detachably mounted on the lower shell 1, the liquid inlet pipe 3 and the liquid outlet pipe 4 are both connected to one side of the lower shell 1, one end of the liquid inlet pipe 3 and the liquid outlet pipe 4 are both connected to an adjusting device, the adjusting device comprises a fixed tube 5, a rotating sleeve 6, a lead screw 7, an internal gear 8, an elastic plate 9, an external gear 10, a fixed frame 11 and a sliding frame 12, the fixed tube 5 is respectively fixedly connected to one end of the liquid outlet pipe 4 and the liquid inlet pipe 3, the rotating sleeve 6 is rotatably connected to the fixed tube At the other end, the lead screw 7 is arranged inside the fixed tube 5, the internal gear 8 is fixedly connected in the rotating sleeve 6, the external gear 10 is fixedly connected to the outside of the lead screw 7, and the internal gear 8 and the external gear 10 are meshed, the two ends of the elastic plate 9 are respectively connected to the sliding frame 12 and the fixed frame 11, and a driving mechanism is arranged outside the rotating sleeve 6, the driving mechanism includes a driven wheel 13, a motor 14, a fixed plate 15 and a driving wheel 16, the driven wheel 13 is fixedly connected to the outside of the rotating sleeve 6, the motor 14 is detachably installed on one side of the fixed plate 15, the output end of the motor 14 is connected to the driving wheel 16, and the driving wheel 16 and the driven wheel 13 are meshed.

[0033] A connecting pipe 17 is provided at one end of the rotating sleeve 6 , and the rotating sleeve 6 and the connecting pipe 17 are rotatably connected. The other end of the connecting pipe 17 is connected to an external device. The fixing frame 11 is fixedly connected inside the connecting pipe 17 , and the fixing plate 15 is fixedly connected to the outside of the connecting pipe 17 .

[0034] A sliding block 18 is disposed on the outer side of the sliding frame 12 , and a sliding groove 19 is provided in the fixing tube 5 , and the sliding groove 19 is adapted to the sliding block 18 .

[0035] In this embodiment, when the conveying speed of the insulating cooling oil needs to be changed, a signal is sent to the device by an external device, and then the motor 14 installed on one side of the fixed plate 15 is driven to open, and then the motor 14 drives the driving wheel 16 connected to the output end to rotate, and then the driving wheel 16 drives the driven wheel 13 meshing therewith to rotate, and then the driven wheel 13 drives the rotating sleeve 6 to rotate, and then the rotating sleeve 6 drives the internal gear 8 connected to the inner side to rotate, and then the internal gear 8 drives the multiple external gears 10 meshing therewith to rotate, and then the external gear 10 drives the lead screw 7 to rotate, and since the sliding frame 12 is connected to the screw through the thread and the lead screw 7 is movably connected, and then the sliding frame 12 will slide along the lead screw 7, and at the same time the sliding frame 12 will drive the slider 18 to slide along the slide groove 19, and then the distance between the sliding frame 12 and the fixed frame 11 will change, so that the overall length of the elastic plate 9 will change, and then the gap between the elastic plates 9 will change, thereby changing the passing speed of the insulating cooling oil, thereby achieving the purpose of changing the insulating cooling oil delivery speed. After proper adjustment, the motor 14 can be stopped, so that the battery cell can work at the optimal temperature, thereby improving the service life of the battery cell.

[0036] See also Figure 1and Figure 2 As a further implementation of the liquid cooling device: a mounting plate 20 is provided on the outer side of the lower shell 1 , and the connecting pipe 17 can be detachably mounted on the mounting plate 20 .

[0037] A DC terminal 21 and a communication port 22 are provided on one side of the upper shell 2 .

[0038] A screw sleeve 23 is connected to the outer side of the lower shell 1 , and a bolt 24 is provided on the outer side of the upper shell 2 . The bolt 24 is detachably installed in the screw sleeve 23 through a thread.

[0039] A fixing ear 25 is connected to the top end of the bolt 24 .

[0040] A sealing strip 26 is provided on one side of the upper shell 2 , and the sealing strip 26 is detachably installed between the upper shell 2 and the lower shell 1 .

[0041] More specifically, the structural characteristics of the device are as follows: the battery cell is installed in the lower shell 1, and then the sealing strip 26 is placed at the corresponding position above the lower shell 1, and then the upper shell 2 is covered and placed above the lower shell 1, and then the bolt 24 is sequentially passed through the upper shell 2 and the sealing strip 26 into the screw sleeve 23 set on the outer side of the lower shell 1, and then the bolt 24 is rotated through the fixing ear 25 so that the bolt 24 is screwed into the screw sleeve 23, so that the upper shell 2 and the lower shell 1 cooperate to press the sealing strip 26, and then a closed space is formed inside the upper shell 2 and the lower shell 1, and the setting of the sealing strip 26 effectively enhances the sealing performance of the joint, and then the insulating cooling oil is transported to the lower shell 1 and the upper shell 2 through the liquid inlet pipe 3 through the external oil circulation system. In the sealed space formed, full immersion cooling of the battery cell is achieved, so that the heat generated by the battery cell can be taken away efficiently and timely, and then the insulating cooling oil after heat exchange will be transported to the external refrigeration system through the liquid outlet pipe 4 for cooling, and then transported again through the oil circulation system, thereby improving the cooling efficiency of the battery cell and realizing the recycling of resources. The DC terminal 21 is mainly used to connect a DC power supply and transmit electricity. They can safely transmit a large current to meet the power requirements of the equipment, and the DC terminal 21 is divided into two positive and negative poles. The setting of the communication port 22 allows the device to exchange data and communicate with other devices or systems, which is convenient for integrating the device into a larger system or network.

[0042] In summary, when the overall device is in use or running: when it is necessary to change the delivery speed of the insulating cooling oil, the external device sends a signal to the device, and then drives the motor 14 installed on one side of the fixed plate 15 to open, and then the motor 14 drives the driving wheel 16 connected to the output end to rotate, and then the driving wheel 16 drives the driven wheel 13 meshing therewith to rotate, and then the driven wheel 13 drives the rotating sleeve 6 to rotate, and then the rotating sleeve 6 drives the internal gear 8 connected to the inside to rotate, and then the internal gear 8 drives the multiple external gears 10 meshing therewith to rotate, and then the external gear 10 drives the lead screw 7 to rotate, and because the sliding frame 12 is rotated by the screw The groove and the lead screw 7 are movably connected, and then the sliding frame 12 will slide along the lead screw 7, and at the same time the sliding frame 12 will drive the slider 18 to slide along the slide groove 19, and then the distance between the sliding frame 12 and the fixed frame 11 will change, so that the overall length of the elastic plate 9 will change, and then the gap between the elastic plates 9 will change, thereby changing the passing speed of the insulating cooling oil, thereby achieving the purpose of changing the insulating cooling oil delivery speed. After proper adjustment, the motor 14 can be stopped, so that the battery cell can work at the optimal temperature, thereby improving the service life of the battery cell.

[0043] The structural characteristics of the device are as follows: the battery cell is installed in the lower shell 1, and then the sealing strip 26 is placed at the corresponding position above the lower shell 1, and then the upper shell 2 is covered and placed above the lower shell 1, and then the bolt 24 is sequentially passed through the upper shell 2 and the sealing strip 26 into the screw sleeve 23 set on the outer side of the lower shell 1, and then the bolt 24 is rotated through the fixing ear 25 so that the bolt 24 is screwed into the screw sleeve 23, so that the upper shell 2 and the lower shell 1 cooperate to press the sealing strip 26, and then a closed space is formed inside the upper shell 2 and the lower shell 1. The setting of the sealing strip 26 effectively enhances the sealing performance of the joint, and then the insulating cooling oil is transported to the lower shell 1 and the upper shell 2 through the liquid inlet pipe 3 through the external oil circulation system to form In the sealed space, full immersion cooling of the battery cell is achieved, so that the heat generated by the battery cell is taken away efficiently and timely, and then the insulating cooling oil after heat exchange is transported to the external refrigeration system through the liquid outlet pipe 4 for cooling, and then transported again through the oil circulation system, which improves the cooling efficiency of the battery cell and realizes the recycling of resources. The DC terminal 21 is mainly used to connect a DC power supply and transmit electricity. They can safely transmit a large current to meet the power requirements of the equipment, and the DC terminal 21 is divided into two positive and negative poles. The setting of the communication port 22 allows the device to exchange data and communicate with other devices or systems, which is convenient for integrating the device into a larger system or network.

[0044] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fully immersed liquid-cooled energy storage battery, comprising a lower shell (1), characterized in that: A liquid cooling device is installed on the lower shell (1), and the liquid cooling device comprises an upper shell (2), a liquid inlet pipe (3) and a liquid outlet pipe (4). The upper shell (2) is installed on the lower shell (1), and the liquid inlet pipe (3) and the liquid outlet pipe (4) are both connected to one side of the lower shell (1). One end of the liquid inlet pipe (3) and the liquid outlet pipe (4) are both connected to an adjusting device. The adjusting device comprises a fixed tube (5), a rotating sleeve (6), a lead screw (7), an internal gear (8), an elastic plate (9), an external gear (10), a fixed frame (11) and a sliding frame (12). The fixed tube (5) is respectively connected to one end of the liquid outlet pipe (4) and the liquid inlet pipe (3). The rotating sleeve (6) The screw (7) is connected to the other end of the fixed tube (5), the screw (7) is arranged inside the fixed tube (5), the internal gear (8) is connected inside the rotating sleeve (6), the external gear (10) is connected to the outside of the screw (7), the two ends of the elastic plate (9) are respectively connected to the sliding frame (12) and the fixed frame (11), and a driving mechanism is arranged outside the rotating sleeve (6), the driving mechanism comprises a driven wheel (13), a motor (14), a fixed plate (15) and a driving wheel (16), the driven wheel (13) is connected to the outside of the rotating sleeve (6), the motor (14) is installed on one side of the fixed plate (15), and the output end of the motor (14) is connected to the driving wheel (16).

2. A fully immersed liquid-cooled energy storage battery according to claim 1, characterized in that: A connecting pipe (17) is provided at one end of the rotating sleeve (6), the rotating sleeve (6) and the connecting pipe (17) are rotatably connected, the fixing frame (11) is fixedly connected inside the connecting pipe (17), and the fixing plate (15) is fixedly connected to the outside of the connecting pipe (17).

3. A fully immersed liquid-cooled energy storage battery according to claim 2, characterized in that: A sliding block (18) is arranged on the outside of the sliding frame (12), and a sliding groove (19) is provided in the fixing tube (5), and the sliding groove (19) is adapted to the sliding block (18).

4. A fully immersed liquid-cooled energy storage battery according to claim 3, characterized in that: A mounting plate (20) is provided on the outer side of the lower shell (1), and the connecting pipe (17) is detachably mounted on the mounting plate (20).

5. A fully immersed liquid-cooled energy storage battery according to any one of claims 1 to 4, characterized in that: A DC terminal (21) and a communication port (22) are provided on one side of the upper shell (2).

6. A fully immersed liquid-cooled energy storage battery according to claim 5, characterized in that: The outer side of the lower shell (1) is connected with a screw sleeve (23), and the outer side of the upper shell (2) is provided with a bolt (24), and the bolt (24) is detachably installed in the screw sleeve (23) through a thread.

7. A fully immersed liquid-cooled energy storage battery according to claim 6, characterized in that: The top end of the bolt (24) is connected with a fixing ear (25).

8. A fully immersed liquid-cooled energy storage battery according to claim 7, characterized in that: A sealing strip (26) is provided on one side of the upper shell (2), and the sealing strip (26) is detachably installed between the upper shell (2) and the lower shell (1).

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