Energy storage liquid cooling system device and control method thereof

Abstract

The invention is suitable for the technical field of energy storage cabinets, and provides an energy storage liquid cooling system device and a control method thereof. Grooves are symmetrically formed in the inner side wall of the cabinet body, partition plates are installed in the grooves in a sliding mode, flow channels are formed in the partition plates, the flow channels are arranged to be in an S shape, and the partition plates are distributed at equal intervals in the vertical direction of the cabinet body. According to the energy storage liquid cooling system device and the control method thereof, the partition plates serve as heat dissipation pieces of the batteries, the batteries are placed above the corresponding partition plates, heat dissipation of the batteries can be more uniform through the arrangement, and large temperature difference cannot be generated in a cabinet body; and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are matched to change the flow direction of the cooling liquid, so that the position of the partition plate located at the flowing tail end of the cooling liquid is changed, and the problem that the tail end battery is difficult to effectively dissipate heat due to the single flow direction of the cooling liquid is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage cabinets, and in particular relates to an energy storage liquid cooling system device and a control method thereof. Background Art

[0002] Among various energy storage technologies, lithium-ion batteries have gradually become the only choice for industrial and vehicle-mounted energy storage devices due to their high energy density characteristics and high commercial prospects. However, the performance of large-capacity, high-power energy storage battery systems is sensitive to temperature changes. Long-term high and low temperature environments and system temperature differences will affect the life and performance of the battery. Therefore, for high-power energy storage battery systems, cooling devices must be used to dissipate heat during operation.

[0003] At present, energy storage cabinets generally use liquid cooling to dissipate heat. The coolant is input into the energy storage cabinet and circulated to exchange heat with the energy storage cabinet. However, there are still some problems in actual use. Since the coolant flows through each battery in the energy storage cabinet in turn, and the coolant exchanges heat with each battery during the flow, it causes a steady and gradual increase in the flow process. When the coolant flows to the end, its own temperature is also high, resulting in the battery located at the end of the coolant flow unable to obtain effective heat exchange, which will cause the temperature of the battery to rise, causing a temperature difference inside the energy storage cabinet, affecting the normal use of the battery. Summary of the invention

[0004] The present invention provides an energy storage liquid cooling system device and a control method thereof, aiming to solve the problem that the temperature of batteries in an energy storage cabinet is different, which affects the normal use of the batteries.

[0005] The present invention is implemented as follows: an energy storage liquid cooling system device comprises a cabinet; the inner side wall of the cabinet is symmetrically provided with grooves, and a partition is slidably installed in the groove, a flow channel is provided inside the partition, and the flow channel is arranged in an S shape, the partitions are equidistantly distributed in the vertical direction of the cabinet, and the partitions are connected by connecting pipes, a liquid storage tank is installed on the outer side wall of the cabinet, and the liquid storage tank is connected to the top and bottom partitions respectively through a first reflux pipe and a second reflux pipe, a driving pump is installed inside the liquid storage tank, and an output end of the driving pump is connected to an infusion pipe, and the infusion pipe It is a three-way tube, and the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are installed on the surface of the infusion tube, two of the tube openings of the infusion tube are respectively connected to the first return pipe and the second return pipe, the first solenoid valve and the second solenoid valve are respectively located at two different infusion directions of the infusion tube, and the infusion tube has two openings in addition to the three-way opening. The third solenoid valve and the fourth solenoid valve are respectively installed at the two openings of the infusion tube, and the central controller of the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve is installed inside the cabinet.

[0006] Preferably, a heat dissipation pipe is installed on the top of the cabinet through a bracket, and the heat dissipation pipe is arranged in an S shape and two ends of the heat dissipation pipe are respectively connected to the connecting pipe and the second return pipe.

[0007] Preferably, a notch is provided on the top of the cabinet, and a fan is installed on the inner wall of the notch, and a filter is installed above the fan corresponding to the upper surface of the cabinet.

[0008] Preferably, a rectangular ventilation slot is provided at the rear of the surface of the partition, and a battery module is placed in front of the upper surface of the partition.

[0009] Preferably, the partition is formed by splicing two groups of concave plates, and the upper concave plate is made of copper, and the connecting pipes are staggered and connected to each partition.

[0010] Preferably, a connector is installed at the flow channel opening of the partition, the connecting pipe is a hard pipe head with a soft tube body, a limiting block is installed on the outer wall of the pipe mouth of the connecting pipe, and an L-shaped slot matched with the limiting block is opened on the inner wall of the connecting head, and the connecting head and the connecting pipe are rotated and fixed after plugging.

[0011] Preferably, a groove is provided on the inner side wall of the connector, and a spring is installed in the groove, the movable end of the spring is connected to a positioning block, a clamping block is installed on the side of the positioning block away from the spring, the clamping block is inserted into the L-shaped slot of the connector and abuts against the limit block, a handle is connected to the front side of the positioning block, and the handle is located outside the connector.

[0012] Preferably, pulleys are installed on both left and right sides of the lower surface of the partition.

[0013] Also disclosed is a control method for the above energy storage liquid cooling system, comprising the following steps:

[0014] S1: When the device is used, the partition can be pushed into the cabinet from the front along the inner wall of the slide groove, and then the batteries can be placed one by one on top of each partition. When the battery generates heat and needs to be dissipated, the drive pump in the liquid storage tank is started to input the coolant into the partition. First, when the coolant is output from the first return pipe, the first solenoid valve is closed, the second solenoid valve is opened, the third solenoid valve is opened, and the fourth solenoid valve is closed. At this time, the coolant enters the first return pipe and enters the bottom partition from the first return pipe. After that, the coolant refluxes from the internal flow channel of the partition and enters the upper partition through the connecting pipe. This is repeated and finally flows into the liquid storage tank from the second return pipe. If the flow direction of the coolant needs to be changed, the coolant needs to be output from the second return pipe and reflux from the first return pipe. At this time, the first solenoid valve and the fourth solenoid valve can be opened, and the second solenoid valve and the third solenoid valve can be closed. At this time, the reverse flow of the coolant can be achieved, thereby avoiding the problem that the temperature of the partition that the coolant passes through last is difficult to lower.

[0015] S2: When the cabinet needs to be ventilated and dehumidified, the fan can be started. After the fan is started, the external air is drawn into the cabinet. When the air is drawn in, it passes through the heat dissipation pipe. By accelerating the air flow speed near the heat dissipation pipe, the heated coolant exchanges heat with the air, so that the coolant is steadily lowered, thereby ensuring long-term normal heat exchange of the coolant.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0017] 1. By using the partition as a heat sink for the battery and placing each battery on the corresponding partition, this arrangement can make the heat dissipation of the battery more uniform and will not cause a large temperature difference inside the cabinet. By setting an infusion tube and cooperating with the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve, the flow direction of the coolant can be changed, so that the position of the partition at the end of the coolant flow is changed, thereby solving the problem that the end battery is difficult to effectively dissipate heat due to the single flow direction of the coolant.

[0018] 2. By setting up a heat dissipation pipe, the heat dissipation pipe and the fan can cooperate with the coolant that absorbs heat to exchange heat, thereby ensuring long-term heat dissipation of the battery. By opening a ventilation slot, the airflow can be evenly blown to the inside of the cabinet, thereby improving the ventilation and dehumidification effect of the cabinet. By setting up a connecting head, the partition and the connecting pipe are installed through the connecting head. The connecting pipe can be inserted into the connecting head and rotated during installation. This operation can insert the limit block into the slot of the connecting head, thereby connecting the two. This connection method is more convenient during disassembly and assembly. After the connecting head is connected to the connecting pipe, the block is inserted into the slot of the connecting head under the elastic force of the spring and conflicts with the limit block, thereby preventing the connecting pipe from falling off from the connecting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 It is a rear view structural schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the liquid storage tank of the present invention;

[0023] Figure 5 It is a schematic diagram of a top view cross-sectional structure of a partition of the present invention;

[0024] Figure 6 The present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 7 It is a schematic diagram of the connecting pipe connection structure of the present invention;

[0026] Figure 8 It is a schematic diagram of the top view structure of the partition of the present invention;

[0027] In the figure: 1. cabinet; 2. partition; 3. flow channel; 4. connecting pipe; 5. liquid storage tank; 6. first return pipe; 7. second return pipe; 8. driving pump; 9. infusion pipe; 10. first solenoid valve; 11. second solenoid valve; 12. third solenoid valve; 13. fourth solenoid valve; 14. heat dissipation pipe; 15. fan; 16. filter; 17. ventilation slot; 18. connector; 19. limit block; 20. spring; 21. positioning block; 22. clamping block. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The embodiment of the present invention provides an energy storage liquid cooling system device, such as Figure 1-8As shown, it includes a cabinet 1, the inner wall of the cabinet 1 is symmetrically provided with grooves, and a partition 2 is slidably installed in the groove, a flow channel 3 is provided inside the partition 2, and the flow channel 3 is set to be S-shaped, the partitions 2 are equidistantly distributed in the vertical direction of the cabinet 1, and the partitions 2 are connected by a connecting pipe 4, and a liquid storage tank 5 is installed on the outer wall of the cabinet 1, and the liquid storage tank 5 is connected to the top and bottom partitions 2 respectively through a first reflux pipe 6 and a second reflux pipe 7, and a driving pump 8 is installed inside the liquid storage tank 5, and the output end of the driving pump 8 is connected to an infusion pipe 9, and the infusion pipe 9 is a three-way pipe, and a first solenoid valve 10, a second solenoid valve 11, a third solenoid valve 12 and a fourth solenoid valve 13 are installed on the surface of the infusion pipe 9, two of which are connected to the first reflux pipe 6 and the second reflux pipe 7 respectively, and the first solenoid valve 10 and the second solenoid valve 11 are respectively located at two different ends of the infusion pipe 9 In the infusion direction, in addition to the three-way port, the infusion tube 9 has two openings. The third solenoid valve 12 and the fourth solenoid valve 13 are respectively installed at the two openings of the infusion tube 9. The cabinet 1 is equipped with a central controller of the first solenoid valve 10, the second solenoid valve 11, the third solenoid valve 12 and the fourth solenoid valve 13. The device uses the partition 2 as a heat sink for the battery, and each battery is placed above the corresponding partition 2. This setting can make the battery heat dissipation more uniform, and will not cause a large temperature difference inside the cabinet 1. By setting the infusion tube 9 and cooperating with the first solenoid valve 10, the second solenoid valve 11, the third solenoid valve 12 and the fourth solenoid valve 13, the flow direction of the coolant can be changed, so that the position of the partition 2 at the end of the coolant flow changes, thereby solving the problem that the end battery is difficult to effectively dissipate heat due to the single flow direction of the coolant.

[0031] A heat dissipation pipe 14 is installed on the top of the cabinet 1 through a bracket. The heat dissipation pipe 14 is arranged in an S shape and its two ends are respectively connected to the connecting pipe 4 and the second return pipe 7. A slot is opened on the top of the cabinet 1, and a fan 15 is installed on the inner wall of the slot. By setting the heat dissipation pipe 14, the heat dissipation pipe 14 and the fan 15 can cooperate with the coolant that absorbs heat to exchange heat, thereby ensuring long-term heat dissipation of the battery.

[0032] A rectangular ventilation slot 17 is provided at the rear of the partition 2, a battery module is placed in front of the upper surface of the partition 2, and a filter 16 is installed above the fan 15 corresponding to the upper surface of the cabinet 1. By providing the ventilation slot 17, the air flow can be evenly blown to the interior of the cabinet 1, thereby improving the ventilation and dehumidification effect of the cabinet 1.

[0033] The partition 2 is made of two groups of concave plates, and the upper concave plate is made of copper. The connecting pipes 4 are staggered and connect each partition 2. By setting the upper plate of the partition 2 as a copper plate, its heat exchange efficiency can be improved, thereby improving the heat dissipation effect of the battery.

[0034] A connector 18 is installed at the opening of the flow channel 3 of the partition 2, and the connecting pipe 4 is a hard pipe head with a soft tube body. A limit block 19 is installed on the outer wall of the pipe mouth of the connecting pipe 4. The inner wall of the connector 18 is provided with an L-shaped slot that matches the limit block 19. The connector 18 and the connecting pipe 4 are rotated and fixed after plugging. By providing the connector 18, the partition 2 and the connecting pipe 4 are installed through the connector 18. When installing the connecting pipe 4, the connector 18 can be inserted and rotated. This operation can insert the limit block 19 into the slot of the connector 18, thereby realizing the connection between the two.

[0035] A groove is provided on the inner wall of the connector 18, and a spring 20 is installed in the groove. A positioning block 21 is connected to the movable end of the spring 20. A clamping block 22 is installed on the side of the positioning block 21 away from the spring 20. The clamping block 22 is inserted into the L-shaped slot of the connector 18 and conflicts with the limit block 19. A handle is connected to the front side of the positioning block 21, and the handle is located outside the connector 18. After the connector 18 is connected to the connecting pipe 4, the clamping block 22 is inserted into the slot of the connector 18 under the elastic force of the spring 20 and conflicts with the limit block 19, thereby preventing the connecting pipe 4 from falling off from the connector 18.

[0036] Pulleys are installed on both left and right sides of the lower surface of the partition 2. By installing pulleys under the partition 2, it is more convenient and labor-saving to push, pull, disassemble and assemble the partition 2.

[0037] Also disclosed is a control method for the above energy storage liquid cooling system, comprising the following steps:

[0038] S1: When the device is used, the partition 2 can be pushed into the cabinet 1 from the front along the inner wall of the slide groove, and then the batteries can be placed one by one on top of each partition 2. When the battery generates heat and needs to be dissipated, the drive pump 8 in the liquid storage tank 5 is started to input the coolant into the partition 2. First, when the coolant is output from the first return pipe 6, the first solenoid valve 10 is closed, the second solenoid valve 11 is opened, the third solenoid valve 12 is opened, and the fourth solenoid valve 13 is closed. At this time, the coolant enters the first return pipe 6 and enters the bottom partition 2 from the first return pipe 6. , then the coolant refluxes from the internal flow channel 3 of the partition 2 and enters the upper partition 2 through the connecting pipe 4, and this is repeated, and finally flows into the liquid storage tank 5 from the second return pipe 7. If the flow direction of the coolant needs to be changed, the coolant needs to be output from the second return pipe 7 and refluxed from the first return pipe 6. At this time, the first solenoid valve 10 and the fourth solenoid valve 13 can be opened, and the second solenoid valve 11 and the third solenoid valve 12 can be closed. At this time, the reverse flow of the coolant can be achieved, thereby avoiding the problem that the temperature of the partition 2 that the coolant passes through last is difficult to lower.

[0039] S2: When the cabinet 1 needs to be ventilated and dehumidified, the fan 15 can be started. After the fan 15 is started, the external air is drawn into the cabinet 1. When the air is drawn in, it passes through the heat dissipation pipe 14. By accelerating the air flow speed near the heat dissipation pipe 14, the heated coolant and the air are exchanged with heat, so that the coolant is stably lowered, thereby ensuring long-term normal heat exchange of the coolant.

[0040] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0041] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0042] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An energy storage liquid cooling system device, characterized in that: The cabinet (1) comprises a cabinet body (1), wherein the inner side wall of the cabinet body (1) is symmetrically provided with grooves, and a partition (2) is slidably installed in the groove, a flow channel (3) is provided inside the partition (2), and the flow channel (3) is arranged in an S shape, the partitions (2) are equidistantly distributed in the vertical direction of the cabinet body (1), and the partitions (2) are connected by connecting pipes (4), and a liquid storage tank (5) is installed on the outer side wall of the cabinet body (1), and the liquid storage tank (5) is connected to the top and bottom partitions (2) respectively through a first return pipe (6) and a second return pipe (7), and a driving pump (8) is installed inside the liquid storage tank (5), and the output end of the driving pump (8) is connected to a liquid infusion pipe (9), and the liquid infusion pipe (9) is a three-way pipe, and the surface of the liquid infusion pipe (9) is A first solenoid valve (10), a second solenoid valve (11), a third solenoid valve (12) and a fourth solenoid valve (13) are installed on the surface; two of the pipe openings of the infusion tube (9) are respectively connected to the first return pipe (6) and the second return pipe (7); the first solenoid valve (10) and the second solenoid valve (11) are respectively located at two different infusion directions of the infusion tube (9); the infusion tube (9) has two openings in addition to the three-way opening; the third solenoid valve (12) and the fourth solenoid valve (13) are respectively installed at the two openings of the infusion tube (9); and a central controller of the first solenoid valve (10), the second solenoid valve (11), the third solenoid valve (12) and the fourth solenoid valve (13) is installed inside the cabinet (1).

2. The energy storage liquid cooling system device according to claim 1, characterized in that: A heat dissipation pipe (14) is installed on the top of the cabinet (1) via a bracket. The heat dissipation pipe (14) is arranged in an S shape and its two ends are respectively connected to the connecting pipe (4) and the second return pipe (7).

3. The energy storage liquid cooling system device according to claim 1, characterized in that: A notch is provided on the top of the cabinet (1), and a fan (15) is installed on the inner wall of the notch. A filter (16) is installed above the fan (15) corresponding to the upper surface of the cabinet (1).

4. The energy storage liquid cooling system device according to claim 1, characterized in that: A rectangular ventilation slot (17) is provided at the rear of the surface of the partition (2), and a battery module is placed in front of the upper surface of the partition (2).

5. The energy storage liquid cooling system device according to claim 1, characterized in that: The partitions (2) are formed by splicing two groups of concave plates, and the upper concave plate is made of copper. The connecting pipes (4) are installed in a staggered manner and connect the various partitions (2).

6. The energy storage liquid cooling system device according to claim 1, characterized in that: A connector (18) is installed at the opening of the flow channel (3) of the partition (2); the connecting pipe (4) is a hard pipe head with a soft tube body; a limit block (19) is installed on the outer wall of the pipe mouth of the connecting pipe (4); an L-shaped slot matching the limit block (19) is opened on the inner wall of the connecting head (18); the connecting head (18) and the connecting pipe (4) are rotationally fixed after plugging.

7. The energy storage liquid cooling system device according to claim 6, characterized in that: The inner side wall of the connector (18) is provided with a groove, and a spring (20) is installed in the groove; the movable end of the spring (20) is connected to a positioning block (21); a clamping block (22) is installed on the side of the positioning block (21) away from the spring (20); the clamping block (22) is inserted into the L-shaped clamping groove of the connector (18) and abuts against the limit block (19); a handle is connected to the front side of the positioning block (21), and the handle is located outside the connector (18).

8. The energy storage liquid cooling system device according to claim 1, characterized in that: Pulleys are installed on both left and right sides of the lower surface of the partition (2).

9. A control method for an energy storage liquid cooling system according to any one of claims 1 to 8, characterized in that: The steps include: S1: When the device is used, the partition (2) can be pushed into the cabinet 1 from the front along the inner wall of the slide groove, and then the batteries can be placed one by one on top of each partition (2). When the battery generates heat during operation and needs to be dissipated, the drive pump (8) in the liquid storage tank (5) is started to input the coolant into the partition (2). First, when the coolant is output from the first return pipe (6), the first solenoid valve (10) is closed, the second solenoid valve (11) is opened, the third solenoid valve (12) is opened, and the fourth solenoid valve (13) is closed. At this time, the coolant enters the first return pipe (6) and enters the bottom partition (2) from the first return pipe (6). ), then the coolant flows back from the internal flow channel 3 of the partition (2) and enters the upper partition (2) through the connecting pipe (4), and this process is repeated, and finally flows into the liquid storage tank (5) from the second return pipe (7). If it is necessary to change the flow direction of the coolant, the coolant needs to be output from the second return pipe (7) and returned from the first return pipe (6). At this time, the first solenoid valve (10) and the fourth solenoid valve (13) can be opened, and the second solenoid valve (11) and the third solenoid valve (12) can be closed. At this time, the reverse flow of the coolant can be achieved, thereby avoiding the problem that the temperature of the partition (2) that the coolant passes through last is difficult to lower. S2: When the cabinet (1) needs to be ventilated and dehumidified, the fan (15) can be started. After the fan (15) is started, external air is drawn into the cabinet (1). When the air is drawn in, it passes through the heat dissipation pipe (14). By accelerating the air flow speed near the heat dissipation pipe (14), the heated coolant exchanges heat with the air, thereby causing the coolant to drop steadily, thereby ensuring long-term normal heat exchange of the coolant.

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