A three-dimensional new electrochemical energy storage battery pack liquid cooling device

Abstract

The utility model relates to the field of liquid cooling of battery packs, and discloses a three-dimensional new type of electrochemical energy storage battery pack liquid cooling device, including a base and a liquid cooling cover plate, the left and right sides of the top of the base are fixedly connected with a liquid cooling plate 1, the rear side of the top of the base is fixedly connected with a liquid cooling plate 2, the liquid cooling plate 1 is fixedly connected with a liquid cooling thick tube inside, and both ends of the liquid cooling thick tube are fixedly connected with liquid cooling thin tubes, the rear part of the liquid cooling cover plate is fixedly connected with a plurality of plug-in blocks, and the liquid cooling plate 2 is provided with a plurality of slots inside. In the utility model, the coolant passes through the liquid cooling thin tube, and then is collected along the liquid cooling thick tube, and then enters the liquid cooling thin tube again. After passing through the liquid cooling thick tube, the slowed flow rate allows the coolant to more fully absorb the heat generated by the battery, thereby maintaining the balance of the internal temperature of the battery, which improves the energy conversion efficiency of the battery, and thus significantly prolongs the service life of the battery.

Description

Technical Field

[0001] The utility model relates to the field of battery pack liquid cooling, in particular to a three-dimensional novel electrochemical energy storage battery pack liquid cooling device. Background Art

[0002] As the scale of energy storage project construction continues to increase, the capacity of battery cells and the energy density of the system are also increasing. Even if large-capacity batteries are used, the construction of a 100-megawatt energy storage project still requires hundreds of thousands or even hundreds of thousands of batteries to be combined together, which will generate more heat and put forward higher requirements for the temperature control management of the energy storage system. Liquid-cooled energy storage has high technical content. It directly dissipates heat from the battery cells through convection of coolant. The method is controllable and not affected by external conditions. It has high heat dissipation efficiency and more precise temperature control.

[0003] In the prior art, the square battery PACK liquid cooling device mostly uses a module-level water cooling plate and is placed at the bottom of the battery PACK, which only effectively dissipates heat from the bottom of the battery. If the heat dissipation of the battery in the battery PACK is not timely, the battery temperature will be too high, which will lead to reduced battery energy conversion efficiency, accelerated battery aging, and even cause thermal runaway failure of the battery.

[0004] In view of the above problems, a three-dimensional new electrochemical energy storage battery pack liquid cooling device is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a three-dimensional new electrochemical energy storage battery pack liquid cooling device, which aims to improve the problem that most square battery PACK liquid cooling devices in the prior art use module-level water cooling plates, and are placed at the bottom of the battery PACK, and only effectively dissipate heat from the bottom of the battery. If the heat dissipation of the battery in the battery PACK is not timely, the battery temperature will be too high, which will lead to reduced battery energy conversion efficiency, accelerated battery aging, and even cause thermal runaway failure of the battery.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a three-dimensional new electrochemical energy storage battery pack liquid cooling device, including a base and a liquid cooling cover plate, the left and right sides of the top of the base are fixedly connected to liquid cooling plate 1, the rear side of the top of the base is fixedly connected to liquid cooling plate 2, the inside of the liquid cooling plate 1 is fixedly connected to a liquid cooling thick tube, both ends of the liquid cooling thick tube are fixedly connected to liquid cooling thin tubes, the rear part of the liquid cooling cover plate is fixedly connected to a plurality of plug-in blocks, the inside of the liquid cooling plate 2 is provided with a plurality of slots, the front part of the liquid cooling cover plate is fixedly connected to a connecting plate, and a fixing component is arranged on the outside of the liquid cooling plate 1.

[0007] As a further description of the above technical solution:

[0008] The fixing assembly includes a thin shell 1, the outer side of the thin shell 1 is fixedly connected to the outer side of the liquid cooling plate 1, the inner middle side of the thin shell 1 is slidably connected with a plug rod, one side of the outer side of the plug rod is fixedly connected with a baffle, the other side of the outer side of the plug rod is provided with a spring, the upper part of the thin shell 1 is fixedly connected with a thin shell 2, and a blocking block is provided on the top of the baffle.

[0009] As a further description of the above technical solution:

[0010] One end of the liquid cooling tube is fixedly connected with a flange, and the liquid cooling plate is fixedly connected inside to the outside of the liquid cooling tube.

[0011] As a further description of the above technical solution:

[0012] The interior of the second liquid cooling plate is fixedly connected to the outside of the middle of the thin liquid cooling tube, and the middle side of the interior of the second liquid cooling plate is fixedly connected to the outside of one of the thick liquid cooling tubes.

[0013] As a further description of the above technical solution:

[0014] The outer side of the plug-in block is slidably connected to the inside of the card slot.

[0015] As a further description of the above technical solution:

[0016] One end of the spring is fixedly connected to the middle of the baffle, and the other end of the spring is fixedly connected to an inner wall of the thin shell.

[0017] As a further description of the above technical solution:

[0018] The plug-in rod passes through the liquid cooling plate 1 and is plugged into the interior of the connecting plate, and the outer side of the baffle is slidably connected to the interior of the thin shell 1.

[0019] As a further description of the above technical solution:

[0020] The upper side of the blocking block is slidably connected to the inside of the second thin shell, and the lower side of the blocking block is slidably connected to the inside of the first thin shell.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the coolant passes through the liquid cooling thin tube, then gathers along the liquid cooling thick tube, and then enters the liquid cooling thin tube. After passing through the liquid cooling thick tube, the slowed flow rate enables the coolant to more fully absorb the heat generated by the battery, thereby maintaining the balance of the internal temperature of the battery, bringing about an improvement in the battery energy conversion efficiency, thereby significantly extending the battery life.

[0023] 2. In the utility model, the plug-in rod is driven to work through the mutual cooperation among the slot, baffle, spring, plug-in rod, thin shell 2, blocking block, thin shell 1 and other structures, so as to facilitate the installation and disassembly of the device, reduce the installation time and labor cost, improve work efficiency, and make the maintenance and inspection of the battery pack more intuitive and efficient. Once repair or replacement is needed, no fuss is required, thus saving repair time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a three-dimensional new electrochemical energy storage battery pack liquid cooling device proposed by the utility model;

[0025] Figure 2 This is a structural schematic diagram of a plug-in block of a three-dimensional novel electrochemical energy storage battery pack liquid cooling device proposed by the utility model;

[0026] Figure 3 This is a structural schematic diagram of a liquid cooling thick tube of a three-dimensional new electrochemical energy storage battery pack liquid cooling device proposed by the utility model;

[0027] Figure 4 This is a structural schematic diagram of a connection plate of a three-dimensional new electrochemical energy storage battery pack liquid cooling device proposed by the utility model;

[0028] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Base; 2. Liquid cooling plate 1; 3. Liquid cooling plate 2; 4. Liquid cooling thin tube; 5. Liquid cooling thick tube; 6. Flange; 7. Liquid cooling cover; 8. Connecting plate; 9. Slot; 10. Baffle; 11. Spring; 12. Connecting rod; 13. Thin shell 2; 14. Blocking block; 15. Thin shell 1; 16. Connecting block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 - Figure 3A three-dimensional new type of electrochemical energy storage battery pack liquid cooling device includes a base 1 and a liquid cooling cover plate 7. Liquid cooling plates 2 are fixedly connected to the left and right sides of the top of the base 1, and a liquid cooling plate 2 is fixedly connected to the rear side of the top of the base 1. A liquid cooling thick tube 5 is fixedly connected inside the liquid cooling plate 2, and liquid cooling thin tubes 4 are fixedly connected to both ends of the liquid cooling thick tube 5. A plurality of plug-in blocks 16 are fixedly connected to the rear of the liquid cooling cover plate 7, a plurality of card slots 9 are provided inside the liquid cooling plate 2 3, a connecting plate 8 is fixedly connected to the front of the liquid cooling cover plate 7, and a fixed component is arranged on the outside of the liquid cooling plate 2.

[0033] Specifically, the operator connects the liquid cooling thin tube 4 to other pipes through the connecting flange 6, and the coolant flows in, first passing through the liquid cooling thin tube 4 on the left, then converging to the center of the left liquid cooling plate 1 2, and then entering the liquid cooling plate 2 3 along the liquid cooling thick tube 5. In the middle of the liquid cooling plate 2 3, the coolant will enter the middle side liquid cooling thick tube 5, then flow back to the right side liquid cooling thin tube 4, and continue to flow to the middle side of the right side liquid cooling plate 1 2. After passing through the liquid cooling thick tube 5, the flow rate slows down, so that it can fully absorb heat. This design helps to maintain the stability of the battery temperature, prevent the decline of energy conversion efficiency, premature aging of the battery and the risk of thermal runaway, and ensure the normal operation of the battery system.

[0034] Reference Figure 5 The fixed component includes a thin shell 15, the outer side of the thin shell 15 is fixedly connected to the outer side of the liquid cooling plate 2, the inner middle side of the thin shell 15 is slidably connected with a plug rod 12, one side of the outer side of the plug rod 12 is fixedly connected with a baffle 10, and the other side of the outer side of the plug rod 12 is provided with a spring 11, the upper part of the thin shell 15 is fixedly connected with a thin shell 2 13, and a blocking block 14 is provided on the top of the baffle 10.

[0035] Specifically, when disassembling, you only need to gently pull the plug rod 12, and the baffle 10 will slide outward. The spring 11 will be compressed in this process, prompting the blocking block 14 to slide into the thin shell 15, forming a resistance to prevent the baffle 10 from resetting. At this time, the plug rod 12 is separated from the connecting plate 8, and the disassembly task is successfully completed. In the installation process, first, ensure that the plug block 16 on the liquid cooling cover plate 7 is accurately aligned with the slot 9 in the liquid cooling plate 2 3, and then lift the blocking block 14 to make it withdraw from the thin shell 15. With the help of the restoring force of the spring 11, the baffle 10 will automatically move inward, and the plug rod 12 will then be re-embedded in the connecting plate 8, and the entire installation process is completed.

[0036] Reference Figure 3 - Figure 5One end of the liquid-cooling thin tube 4 is fixedly connected with a flange 6, the inside of the liquid-cooling plate 2 is fixedly connected to the outside of the liquid-cooling thin tube 4, the inside of the liquid-cooling plate 2 3 is fixedly connected to the outside of the middle part of the liquid-cooling thin tube 4, the middle side of the inside of the liquid-cooling plate 2 3 is fixedly connected to the outside of one of the liquid-cooling thick tubes 5, the outside of the plug-in block 16 is slidably connected to the inside of the slot 9, one end of the spring 11 is fixedly connected to the middle part of the baffle 10, and the other end of the spring 11 is fixedly connected to the inner wall of the thin shell 15, the plug-in rod 12 passes through the liquid-cooling plate 2 and is plugged into the inside of the connecting plate 8, the outside of the baffle 10 is slidably connected to the inside of the thin shell 15, the upper side of the blocking block 14 is slidably connected to the inside of the thin shell 2 13, and the lower side of the blocking block 14 is slidably connected to the inside of the thin shell 15.

[0037] Specifically, the flange 6 is connected to other pipes to input and output the coolant, and the liquid cooling plate 2 is tightly combined with the outer side of the liquid cooling thin tube 4 to form a part of the cooling channel. The liquid cooling plate 2 3 is outside the middle of the liquid cooling thin tube 4, and the liquid cooling thick tube 5 is connected to the inner side of the liquid cooling plate 2 3 to further enhance the cooling effect. The plug-in block 16 cooperates with the slot 9 to ensure that it can be firmly locked during the installation process and enhance the stability of the structure. The spring 11 is a key balancing element, one end of which is fixed to the middle of the baffle 10 and the other end is connected to the inner wall of the thin shell 15 to ensure that the baffle 10 can move appropriately when needed and provide the necessary pressure. The plug-in rod 12 passes through the liquid cooling plate 2 and is firmly inserted into the connecting plate 8 to form an integral structure. The sliding connection between the outer side of the baffle 10 and the thin shell 15 allows it to be adjusted under the action of the spring 11 to adapt to changes in installation and disassembly. The blocking block 14 slides up and down between the thin shell 15 and the thin shell 2 13 to provide support and prevent excessive movement, thereby ensuring the stability and reliability of the entire system.

[0038] Working principle: the operator connects the flange 6 and other pipes, and inputs the coolant into the liquid-cooling capillary 4 connected to the left flange 6. When the coolant enters the middle of the left liquid-cooling plate 1 2, it will pass through the left liquid-cooling thick pipe 5, and then pass through the liquid-cooling capillary 4 to enter the liquid-cooling plate 2 3. When it reaches the middle of the liquid-cooling plate 2 3, the coolant will enter the liquid-cooling thick pipe 5 on the middle side, and then enter the liquid-cooling capillary 4. When it enters the middle side of the right liquid-cooling plate 1 2, the coolant will enter the liquid-cooling thick pipe 5 on the right, and finally come out through the right liquid-cooling capillary 4. One end of the right liquid-cooling capillary 4 is connected to other pipes by flange 6 to transport the coolant. When the coolant passes through the liquid-cooling capillary 4, the flow rate will be fast, and when it enters the liquid-cooling thick pipe 5, the flow rate will slow down, thereby allowing the coolant to absorb more heat. , to avoid the reduction of battery energy conversion efficiency, accelerated battery aging, and thermal runaway failure of the battery. When the device needs to be disassembled, pull the plug rod 12 to move the baffle 10 outward, and then compress the spring 11, so that the blocking block 14 slides into the thin shell 15 to prevent the baffle 10 from moving inward. At this time, the plug rod 12 is separated from the inside of the connecting plate 8, and the disassembly is completed. When installation is required, align the plug block 16 on the liquid cooling cover plate 7 with the slot 9 inside the liquid cooling plate 2 3 and insert it, and then pull the blocking block 14 upward. At this time, the blocking block 14 leaves the thin shell 15, and the baffle 10 moves inward under the push of the elastic force of the spring 11, and then the plug rod 12 is reinserted into the inside of the connecting plate 8, and the installation is completed.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 three-dimensional new type electrochemical energy storage battery pack liquid cooling device, comprising a base (1) and a liquid cooling cover plate (7), characterized in that: The left and right sides of the top of the base (1) are fixedly connected to a liquid cooling plate 1 (2), the rear side of the top of the base (1) is fixedly connected to a liquid cooling plate 2 (3), the inside of the liquid cooling plate 1 (2) is fixedly connected to a liquid cooling thick tube (5), both ends of the liquid cooling thick tube (5) are fixedly connected to liquid cooling thin tubes (4), the rear part of the liquid cooling cover plate (7) is fixedly connected to a plurality of plug-in blocks (16), the inside of the liquid cooling plate 2 (3) is provided with a plurality of card slots (9), the front part of the liquid cooling cover plate (7) is fixedly connected to a connecting plate (8), and a fixing component is arranged on the outside of the liquid cooling plate 1 (2).

2. According to claim 1, a three-dimensional new electrochemical energy storage battery pack liquid cooling device is characterized in that: The fixing assembly comprises a thin shell (15), the outer side of the thin shell (15) is fixedly connected to the outer side of the liquid cooling plate (2), the middle side of the inner part of the thin shell (15) is slidably connected with a plug-in rod (12), one side of the outer part of the plug-in rod (12) is fixedly connected with a baffle (10), the other side of the outer part of the plug-in rod (12) is provided with a spring (11), the upper part of the thin shell (15) is fixedly connected with a thin shell (13), and a blocking block (14) is provided on the top of the baffle (10).

3. The three-dimensional novel electrochemical energy storage battery pack liquid cooling device according to claim 1 is characterized in that: One end of the liquid cooling capillary (4) is fixedly connected to a flange (6), and the inside of the liquid cooling plate (2) is fixedly connected to the outside of the liquid cooling capillary (4).

4. According to claim 1, a three-dimensional new electrochemical energy storage battery pack liquid cooling device is characterized in that: The interior of the second liquid cooling plate (3) is fixedly connected to the outer side of the middle part of the liquid cooling thin tube (4), and the middle side of the interior of the second liquid cooling plate (3) is fixedly connected to the outer side of one of the liquid cooling thick tubes (5).

5. The three-dimensional novel electrochemical energy storage battery pack liquid cooling device according to claim 1 is characterized in that: The outer side of the plug-in block (16) is slidably connected to the inside of the card slot (9).

6. The three-dimensional novel electrochemical energy storage battery pack liquid cooling device according to claim 2 is characterized in that: One end of the spring (11) is fixedly connected to the middle of the baffle (10), and the other end of the spring (11) is fixedly connected to the inner wall of the thin shell (15).

7. The three-dimensional novel electrochemical energy storage battery pack liquid cooling device according to claim 2 is characterized in that: The plug-in rod (12) passes through the liquid cooling plate (2) and is plugged into the interior of the connecting plate (8), and the outer side of the baffle (10) is slidably connected to the interior of the thin shell (15).

8. The three-dimensional novel electrochemical energy storage battery pack liquid cooling device according to claim 2 is characterized in that: The upper side of the blocking block (14) is slidably connected to the inside of the second thin shell (13), and the lower side of the blocking block (14) is slidably connected to the inside of the first thin shell (15).

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