Energy storage charging station cooling system for recycling whole pack of vehicle retired power batteries

Abstract

The invention discloses an energy storage charging station cooling system for recycling a whole pack of vehicle retired power batteries. The energy storage charging station cooling system comprises an additional cooling subsystem, the additional cooling subsystem comprises a liquid cooling plate, the liquid cooling plate is provided with a liquid cooling cavity, and the liquid cooling cavity is provided with a liquid inlet communicated with the liquid supply end of the battery pack liquid cooling subsystem and a liquid outlet communicated with the liquid return end of the battery pack liquid cooling subsystem; the liquid inlet is provided with a liquid inlet valve which is controlled to be opened and closed, a plurality of groups of battery packs are stacked in the box body of the energy storage charging station along the height direction, and each group of battery packs is correspondingly provided with a group of liquid cooling plates; the temperature monitoring subsystem is used for monitoring the use temperature of each liquid cooling plate, and the information processing subsystem is used for receiving and processing temperature information and controlling a specified liquid inlet valve to be opened or closed according to a processing result; the battery in the energy storage box body can be charged and discharged in a charging and discharging environment at an ideal temperature, so that the reuse performance of the waste battery is improved, and the reuse cost of the vehicle retired power battery is controlled.

Description

Technical Field

[0001] The present invention relates to the field of recycling a whole pack of retired vehicle power batteries, and in particular to a cooling system for an energy storage charging station for recycling a whole pack of retired vehicle power batteries. Background Art

[0002] When new energy vehicles first entered the domestic market, the concept of cascade utilization was proposed in order to cope with the craze for retiring power batteries. Subsequently, relevant state departments successively introduced a number of policies to regulate the extension of corporate responsibilities, battery production and trading, use management, disassembly and recycling, and quality and safety assurance. Relevant companies also followed up and began the research and development of battery recycling technology.

[0003] For example, when used in energy storage boxes, the purpose of reducing electricity costs is achieved by staggered charging and discharging of the energy storage boxes. Generally, batteries generate a certain amount of heat when discharged. When the heat is too high and the battery temperature exceeds the temperature range of normal use, the battery performance will decline and the battery cycle life will be reduced. If the ambient temperature is high, and the battery pack generates heat itself during charging, if necessary cooling measures are not taken, the battery pack temperature will continue to rise and exceed 30°C, and even the local temperature may reach above 60°C, posing a risk of fire and explosion. This temperature difference has a greater impact on used batteries. If the battery pack temperature is too high or too low, the performance of the battery pack will decline, so a battery cooling system is needed to control the temperature so that it reaches an optimal state.

[0004] In the prior art, when the battery is cooled by the liquid cooling system of the battery pack and the additional air conditioning in the energy storage box, the cooling method adopted is simply turned on and off. When the cooling function is turned on, the cooling system is in a full-load working state, that is, the battery is cooled by water using a coolant at a fixed temperature, and the ambient temperature in the energy storage box is controlled in conjunction with the air conditioning temperature at all times, which easily causes high energy consumption and leads to energy waste. Moreover, when the used batteries are recycled, the number of available cycles of the corresponding coolant in the battery pack is reduced, and the temperature control accuracy of the battery pack is poor, especially in a closed energy storage box, where the heat impact is large, affecting the charging and discharging of the energy storage battery, so that the battery cannot be in an ideal temperature charging and discharging environment, and it is basically difficult to reach the preset service life and is scrapped ahead of schedule, and the recycling cost of the used batteries exceeds expectations.

[0005] Therefore, in order to solve the above problems, a cooling system for energy storage charging stations that can reuse the entire package of retired automotive power batteries is needed, which can enable the batteries in the energy storage box to be charged and discharged in an ideal temperature charging and discharging environment, improve the reuse performance of waste batteries, and control the cost of reusing retired automotive power batteries. Summary of the invention

[0006] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a cooling system for an energy storage charging station for recycling a whole pack of retired vehicle power batteries, which can make the battery charging and discharging in the energy storage box be in an ideal temperature charging and discharging environment, improve the reuse performance of waste batteries, and control the cost of recycling retired vehicle power batteries.

[0007] The energy storage charging station cooling system for the whole-pack reuse of retired vehicle power batteries of the present invention comprises an air conditioning cooling subsystem for adjusting the ambient temperature of the energy storage box of the energy storage charging station and a battery pack liquid cooling subsystem for adjusting the battery pack to a set use temperature;

[0008] Also included is an additional cooling subsystem; the additional cooling subsystem includes a liquid cooling plate, the liquid cooling plate has a liquid cooling cavity, the liquid cooling cavity has a liquid inlet connected to the liquid supply end of the battery pack liquid cooling subsystem and a liquid outlet connected to the liquid return end of the battery pack liquid cooling subsystem;

[0009] The liquid inlet is provided with a liquid inlet valve that is controlled to open and close. A plurality of battery packs are stacked in the box of the energy storage charging station along the height direction, and a group of liquid cooling plates is correspondingly provided on each group of battery packs;

[0010] It also includes a temperature monitoring subsystem and an information processing subsystem. The temperature monitoring subsystem is used to monitor the operating temperature of each liquid cooling plate and transmit the temperature information to the information processing subsystem.

[0011] The information processing subsystem is used to receive the processing temperature information and control the opening or closing of the designated liquid inlet valve according to the processing result.

[0012] Furthermore, the temperature monitoring subsystem is also used to monitor the operating temperature of each battery pack and transmit the temperature information to the information processing subsystem;

[0013] If the operating temperature of the battery pack received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate by more than 5°C, the liquid inlet valve of the corresponding liquid cooling plate is controlled to open; if the operating temperature of the battery pack received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate by no more than 5°C, the liquid inlet valve of the corresponding liquid cooling plate is controlled to close.

[0014] Furthermore, the liquid outlet is provided with a liquid outlet valve which is controlled to open and close, and each liquid cooling plate has a set of corresponding liquid inlet valves and liquid outlet valves, and the liquid outlet valve and the liquid inlet valve are controlled to open or close at the same time.

[0015] Furthermore, a spoiler column is arranged in the liquid cooling chamber, and the spoiler column is located in the middle of the horizontal cross-section of the liquid cooling chamber. The spoiler column has a spoiler plate protruding toward the liquid inlet, and the spoiler plates are a plurality of plates arranged at intervals. The spoiler column also has a flow surface protruding toward the liquid outlet.

[0016] Furthermore, the spoiler column is provided with a plurality of functional holes, the plurality of functional holes are spaced apart and distributed on the spoiler column in the height direction, and the functional holes are located between adjacent spoilers;

[0017] The density of the functional holes distributed in the middle of the spoiler column in the height direction exceeds the density of the functional holes distributed at both ends of the spoiler column in the height direction.

[0018] Furthermore, the additional cooling subsystem further comprises an air supply duct connected to the air outlet end of the air conditioning cooling subsystem and a return air duct connected to the air return end of the air conditioning cooling subsystem;

[0019] The liquid cooling plate also has a conducting surface and a heat dissipation surface opposite to each other, the conducting surface is attached to the top surface or the bottom surface of the battery pack, and the heat dissipation surface is provided with heat dissipation fins;

[0020] The air supply duct has an air outlet, and the air return duct has an air return outlet, and the air outlet and the air return outlet are arranged opposite to each other in the extension direction of the heat dissipation fins;

[0021] The direction of the cooling liquid flowing in the liquid cooling cavity intersects with the extending direction of the heat dissipation fins.

[0022] Further, the air supply duct extends in the height direction, the air supply duct is arranged at the rear side of the end of the liquid cooling plate, an air induction plate for guiding the gas to the air outlet is provided in the air supply duct, a diversion hole is opened on the air induction plate, or a diversion hole is formed between the air induction plate and the inner wall of the air supply duct;

[0023] The number of air outlets of the air supply duct is consistent with the number of liquid cooling plates, and the air outlets are arranged at the rear end of the liquid cooling plates in a one-to-one correspondence; the number of the air induction plates is consistent with the number of air outlets, and the air induction plates are arranged at the rear end of the air outlets in a one-to-one correspondence;

[0024] The return air duct extends in the height direction, the return air duct is arranged at the front side of the head end of the liquid cooling plate, the number of return air ports of the return air duct is consistent with the number of liquid cooling plates, and the return air ports are arranged at the front end of the liquid cooling plate in a one-to-one correspondence with the liquid cooling plates.

[0025] Furthermore, the air induction plate is inclined downward from back to front, the diversion holes are provided on the air induction plate, and the diversion holes provided on adjacent air induction plates are staggered in height direction; the diversion holes staggered on adjacent air induction plates in height direction have an overlapping area.

[0026] Furthermore, the air outlet and the return air outlet are arranged opposite to each other in the extension direction of the heat dissipation fins, the middle of the air outlet in the height direction is higher than the middle of the air outlet in the height direction, and the middle of the air outlet in the height direction is close to the heat dissipation surface;

[0027] There are a plurality of diversion holes on the air induction plate, the apertures of the plurality of diversion holes gradually decrease from front to back, and the spacing between adjacent holes gradually increases from front to back;

[0028] The aperture sizes of the plurality of return air vents gradually decrease from bottom to top.

[0029] Furthermore, the heat dissipation fins are multiple pieces, and the multiple pieces of heat dissipation fins are arranged in parallel along the set direction I, and the heights of the multiple pieces of heat dissipation fins along the set direction I gradually increase from the middle to both sides;

[0030] The ends of the plurality of heat dissipation fins gradually shrink inward from both sides to the middle along the set direction I;

[0031] The spacing between the heat dissipation fins along the set direction I gradually decreases from the middle to both ends.

[0032] The beneficial effects of the present invention are as follows: a cooling system for an energy storage charging station for the reuse of a whole pack of retired automotive power batteries disclosed in the present invention, through the setting of an additional cooling subsystem, cooperates with a temperature monitoring subsystem and an information processing subsystem, and realizes independent cooling of a specified battery pack by opening or closing a set liquid inlet valve. The cooling system is suitable for series-parallel charging and discharging of heterogeneous battery packs, battery packs with different capacities, and battery packs with different electric losses in an energy storage charging station, and is suitable for series-parallel combinations of any battery packs in an energy storage box. The cooling system has strong versatility and good safety. The cooling system can make the battery charging and discharging in the energy storage box be in a charging and discharging environment with an ideal temperature, thereby improving the reuse performance of waste batteries and controlling the cost of reusing retired automotive power batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0036] Figure 3 It is a side view structural schematic diagram of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the liquid cooling chamber of the present invention;

[0038] Figure 5 It is a structural schematic diagram of the spoiler column of the present invention;

[0039] Figure 6 It is a structural schematic diagram of the heat dissipation fin of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the air induced draft plate of the present invention. DETAILED DESCRIPTION

[0041] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the structure of the liquid cooling chamber of the present invention; Figure 5 It is a structural schematic diagram of the spoiler column of the present invention; Figure 6 It is a structural schematic diagram of the heat dissipation fin of the present invention; Figure 7 It is a schematic diagram of the structure of the air induction plate of the present invention, in which the solid line and the dotted line respectively represent the schematic diagram of the position of the diverter holes opened on the adjacent air induction plates from top to bottom in the height direction. As shown in the figure, the energy storage charging station cooling system for the whole pack reuse of retired vehicle power batteries in this embodiment includes an air conditioning cooling subsystem for adjusting the ambient temperature of the energy storage box of the energy storage charging station and a battery pack liquid cooling subsystem for adjusting the battery pack 001 to a set use temperature;

[0042] The air conditioning cooling subsystem and the battery pack liquid cooling subsystem can adopt any one of the existing technologies to achieve the corresponding functions, which will not be described in detail here;

[0043] It also includes an additional cooling subsystem; the additional cooling subsystem includes a liquid cooling plate 1, the liquid cooling plate 1 has a liquid cooling cavity, the liquid cooling cavity has a liquid inlet 2 connected to the liquid supply end of the battery pack liquid cooling subsystem and a liquid outlet 3 connected to the liquid return end of the battery pack liquid cooling subsystem;

[0044] The liquid cooling plate 1 is arranged at the top and / or bottom of the reused battery pack 001 in the energy storage charging station. The and / or means that the liquid cooling plate 1 can be independently arranged at the top or bottom of the battery pack 001, or there are two liquid cooling plates 1 respectively arranged at the top and bottom of the battery pack 001, and the arrangement is based on the actual situation, which will not be repeated here;

[0045] More preferably, the liquid cooling plate 1 is fitted with the battery pack 001 so that it can directly assist in cooling the battery pack 001, thereby improving the cooling efficiency of the battery pack 001. This solution only shows a group of energy storage rechargeable battery packs stacked from top to bottom in the energy storage box. After the battery pack 001 is connected to the energy storage box, the battery pack 001 is cooled by its own liquid cooling function and air conditioning system. The liquid inlet and outlet of the liquid cooling plate 1 of this solution are connected in parallel to the liquid inlet and outlet of the battery pack 001. The existing liquid cooling pipeline can be directly used to complete the secondary heat dissipation of the battery pack 001, thereby increasing the heat dissipation efficiency of the battery pack 001.

[0046] The liquid cooling cavity is formed in the liquid cooling plate 1. In the horizontal cross section, the size of the liquid cooling plate 1 and the size of the liquid cooling cavity are substantially consistent with the size of the battery pack 001, so as to meet the efficient heat dissipation requirements of the battery pack 001. The horizontal cross section is a cross section perpendicular to the height direction, which will not be described in detail here.

[0047] The liquid inlet 2 is provided with a liquid inlet valve 4 that is controlled to open and close. A plurality of battery packs 001 are stacked in the box of the energy storage charging station along the height direction. A liquid cooling plate 1 is correspondingly provided on each battery pack 001. The battery pack 001 is secondary cooled by the liquid cooling plate 1 to reach a preset use temperature. In this solution, a liquid cooling plate 1 is provided on the top of each battery pack 001.

[0048] It also includes a temperature monitoring subsystem and an information processing subsystem. The temperature monitoring subsystem is used to monitor the operating temperature of each liquid cooling plate 1 and transmit the temperature information to the information processing subsystem.

[0049] The information processing subsystem is used to receive and process temperature information, and control the designated liquid inlet valve 4 to be opened or closed through the processing results; more specifically, the temperature monitoring subsystem is also used to monitor the operating temperature of each battery pack 001, and transmit the temperature information to the information processing subsystem; if the operating temperature of the battery pack 001 received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate 1 by more than 5°C, the liquid inlet valve 4 of the corresponding liquid cooling plate 1 is controlled to be opened; if the operating temperature of the battery pack 001 received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate 1 by no more than 5°C, the liquid inlet valve 4 of the corresponding liquid cooling plate 1 is controlled to be closed. The temperature monitoring subsystem includes a temperature sensor I arranged on the battery pack 001 and a temperature sensor II arranged on the corresponding liquid cooling plate 1. The information processing subsystem uses the existing computer system for controlling the opening and closing of the liquid cooling of the corresponding battery pack 001. A set of temperature information fed back by the temperature sensor I and the temperature sensor II is compared by the information processing subsystem to control the opening or closing of the liquid inlet valve 4. Through the liquid inlet valve 4 that is controlled to open and close, according to the information fed back by the temperature monitoring subsystem, the heat dissipation of the designated battery pack 001 can be accurately performed, and the temperature of each group of battery packs 001 can be controlled within a preset range, thereby reducing the battery pack in the energy storage box caused by the inconsistent heat dissipation efficiency of the battery pack 001. 001 is scrapped due to overheating, and the safety of the energy storage box can be improved. This solution, through the setting of an additional cooling subsystem, cooperates with the temperature monitoring subsystem and the information processing subsystem, and realizes independent cooling of the specified battery pack 001 by setting the opening or closing of the liquid inlet valve 4. It is suitable for series-parallel charging and discharging of heterogeneous battery packs 001, battery packs 001 with different capacities, and battery packs 001 with different power losses in energy storage charging stations. It is suitable for series-parallel combinations of any battery pack 001 in the energy storage box, has strong versatility and good safety, and can make the battery charging and discharging in the energy storage box be in an ideal temperature charging and discharging environment, thereby improving the reuse performance of waste batteries and controlling the cost of reusing retired power batteries for vehicles.

[0050] In this embodiment, the liquid outlet 3 is provided with a liquid outlet valve 5 that is controlled to open and close, and each liquid cooling plate 1 has a set of corresponding liquid inlet valves 4 and liquid outlet valves 5, and the liquid outlet valves 5 and the liquid inlet valves 4 are controlled to open or close at the same time. By setting the liquid outlet valves 5, each liquid cooling plate 1 can be used independently, and when other liquid cooling plates 1 return liquid, they will not heat exchange with the non-working liquid cooling plates 1, which can ensure that the charging and discharging of other battery packs 001 are in an ideal environment.

[0051] In this embodiment, a spoiler column 6 is provided in the liquid cooling chamber, and the spoiler column 6 is located in the middle of the horizontal cross section of the liquid cooling chamber, and the middle is close to the center of the horizontal cross section of the liquid cooling chamber. The heat dissipation range of this position can be wider and more uniform, and the heat can be taken away in time to improve the heat dissipation efficiency of the battery pack 001. The purpose of setting the spoiler column 6 is also to increase the residence time of the coolant at a specified position in the liquid cooling chamber, so as to improve the cooling efficiency of the battery pack 001, so that the cooling of the battery pack 001 is more efficient;

[0052] In this solution, the top end of the spoiler column 6 in the height direction is connected to the top of the inner wall of the liquid cooling chamber, and the bottom end of the spoiler column 6 in the height direction is connected to the bottom of the inner wall of the liquid cooling chamber. On the one hand, the structural strength of the liquid cooling plate 1 itself is increased and a good structural skeleton can be provided. On the other hand, it has a large-area flow resistance effect and a better heat dissipation effect.

[0053] The spoiler column 6 has a spoiler piece 7 protruding toward the liquid inlet, and the spoiler piece 7 is a plurality of pieces arranged at intervals. The spoiler column 6 also has a flow surface 8 protruding toward the liquid outlet. The flow surface 8 is provided to reduce the coolant collection at the liquid outlet of the liquid cooling chamber, and is more conducive to quickly discharging the relatively high-temperature coolant from the liquid cooling chamber, thereby improving the heat dissipation efficiency. The flow surface 8 is continuous and protrudes toward the liquid outlet in the form of a curved surface; wherein the center of the curved surface is directly opposite to the center of the liquid outlet, so that the coolant is discharged evenly; Figure 4 As shown, the line connecting the liquid inlet and the liquid outlet of the liquid cooling cavity is parallel to the length direction of the energy storage box, the liquid inlet is on the right side of the liquid cooling plate 1, and the liquid outlet is on the left side of the liquid cooling plate 1, and the liquid inlets and liquid return ports corresponding to the respective groups of liquid cooling plates 1 are respectively built into the column of the battery pack 001 bracket through the liquid supply pipe to save cost and space;

[0054] The spoiler column 6 is roughly columnar and supported in the liquid cooling chamber. The flow surface 8 is the left end surface of the spoiler column 6 along the liquid inlet direction, and the spoiler 7 is formed on the right end surface of the spoiler column 6. The specific structure of the spoiler column 6 enables the coolant to gather between the spoiler plates 7, and the spoiler plates 7 are provided with a middle exchange hole. According to the characteristics that the coolant has initial kinetic energy and continuously enters the liquid cooling chamber, combined with the spoiler plates 7 distributed in a "mountain" shape, the relatively high-temperature coolant is promptly diffused to the two ends of the spoiler column 6 in the width direction, and combined with the setting of the flow surface 8, there is no liquid accumulation on the back of the spoiler column 6, and the relatively high-temperature coolant in the liquid cooling chamber can be discharged more quickly through the liquid outlet, so that the cooling effect of the liquid cooling plate 1 is better, which is more conducive to ensuring the heat dissipation of the battery pack 001 and improving the safety of the energy storage box of the charging station.

[0055] In this embodiment, the spoiler column 6 is provided with functional holes 9, and there are several functional holes 9. The functional holes 9 are spaced apart on the spoiler column 6 in the height direction, and the functional holes 9 are located between adjacent spoilers 7. The purpose of setting the functional holes 9 is to provide a diffusion branch for the coolant passing through the spoiler column 6, so that part of the coolant is directly discharged to the back of the spoiler column 6. Combined with the curved flow surface 8, the flow efficiency of the relatively high-temperature coolant in the liquid cooling chamber can be improved, that is, the relatively low-temperature coolant is efficiently gathered at the position of the spoiler column 6, and the relatively high-temperature coolant is efficiently discharged. On the one hand, the loss of the relatively low-temperature coolant is prevented, so that the cooling capacity of the liquid cooling plate 1 is improved, and on the other hand, the discharge efficiency of the relatively high-temperature coolant is improved, and the local heat concentration of the liquid cooling plate 1 is reduced, so that the coolant temperature inside the liquid cooling plate 1 is always maintained within the set range, and the overall cooling efficiency of the liquid cooling plate 1 is higher.

[0056] In this embodiment, the density of the functional holes 9 distributed in the middle of the spoiler column 6 in the height direction exceeds the density of the functional holes 9 distributed at the two ends of the spoiler column 6 in the height direction; so that the flow rate in the middle of the spoiler column 6 exceeds the flow rate at the upper and lower ends, and the liquid cooling chamber forms a structure in which the flow velocity is large in the middle and small at the ends, and the heat exchange effect is better; further, the aperture size of the functional hole 9 is smaller than the aperture size of the middle exchange hole to ensure that the coolant can be gathered at the position of the spoiler column 6 to control the cooling effect, which will not be repeated here.

[0057] In this embodiment, the additional cooling subsystem further includes an air supply duct 10 connected to the air outlet end of the air conditioning cooling subsystem and a return air duct 11 connected to the return air end of the air conditioning cooling subsystem; the air supply duct 10 has an air outlet 12, and the return air duct 11 has a return air outlet 13; in this solution, the gas flow direction is parallel to the width direction of the energy storage box, and along the gas flow direction of the air supply duct 10, the air outlet 12 is at the rear and the return air outlet 13 is at the front;

[0058] The liquid cooling plate 1 also has a relative conducting surface and a heat dissipating surface, wherein the conducting surface is attached to the top surface or the bottom surface of the battery pack 001, and the heat dissipating surface is provided with heat dissipating fins 14; so that the heat of the battery pack 001 can be taken away not only through its own liquid cooling system, but also through the liquid cooling plate 1, thereby improving the heat dissipation efficiency of the battery pack 001 and reducing the problem of differences in the reuse life of the battery pack 001 caused by uneven heat dissipation;

[0059] Through the corresponding air outlet 12 and return air outlet 13, the heat dissipation fins 14 are arranged between the two, so that the airflow path passes through the heat dissipation fins 14, and the heat of the corresponding battery pack 001 is directly taken away, and the return air outlet 13 also has a certain negative pressure, so that the cooling air is guided and forced to flow through the heat dissipation fins 14, thereby accelerating the cooling efficiency of the battery pack; when the battery pack 001 is assembled in the energy storage box, each battery pack 001 is equipped with the liquid cooling plate 1 of this solution and the corresponding air outlet 12 and return air outlet 13, and the air outlet and return air both rely on the air conditioning cooling subsystem in the original energy storage box. Compared with the original air conditioning cooling system in the energy storage box, this solution can directly cool the cooling air to the reused The application of battery pack 001 can reduce the cooling differentiation of different positions of battery pack 001, speed up the heat dissipation efficiency of battery pack 001, increase the heat dissipation efficiency of battery pack 001, control the temperature of battery pack 001 within a preset range, and reduce the overheating and scrapping of battery pack 001 caused by inconsistent heat dissipation efficiency of battery pack 001 in the energy storage box. At the same time, it can also improve the safety of the energy storage box, control the temperature of the entire box within the set range, and take into account the heat dissipation of each battery pack 001, so that the battery charging and discharging in the energy storage box can be in an ideal temperature charging and discharging environment, thereby improving the reuse performance of waste batteries, ensuring the service life of waste batteries during cascade utilization, and improving the quality of the energy storage box.

[0060] In this embodiment, the middle part of the air outlet 12 in the height direction is higher than the middle part of the air outlet 12 in the height direction. The air outlet 12 and the return air outlet 13 are relatively arranged in the extension direction of the heat dissipation fins 14. By relatively arranging the air outlet 12 and the return air outlet 13 and closely arranging them in the extension direction of the heat dissipation fins 14, the flow rate of the cooling air can be accelerated, and the heat dissipation efficiency of the battery pack 001 can be improved, which is beneficial to maintaining the temperature of the environment in which the battery pack 001 is located within an appropriate range. The purpose of the height difference between the air outlet 12 and the return air outlet 13 is to make the cooling air flow to the heat dissipation fins 14 tilt from top to bottom, further satisfying the function of efficient air cooling and improving the service life of the battery pack 001.

[0061] In this embodiment, the direction of the coolant flowing in the liquid cooling cavity intersects with the extension direction of the heat dissipation fins 14. The external environment cooling and the internal liquid cooling are intersected to avoid the concentration of cold areas and hot areas. In this solution, the two are perpendicular to each other, which improves the effectiveness of heat dissipation, further quickly cools the battery pack 001, satisfies the liquid cooling plate 1 to efficiently dissipate heat for the battery pack 001, ensures the safety of the battery pack 001 in the energy storage box, and improves the safety of the energy storage box.

[0062] In this embodiment, the air supply duct 10 extends in the height direction, and the air supply duct 10 is arranged at the rear side of the end of the liquid cooling plate 1. The air supply duct 10 is provided with an air induction plate 15 for guiding the gas to the air outlet 12. The purpose of setting the air induction plate 15 is to actively guide the cooling air to the corresponding air outlet 12, and to control the flow rate of the cooling air to each group of liquid cooling plates 1 as much as possible, to meet the heat dissipation consistency of each battery pack 001 as much as possible, to meet the cooling consistency of each position of the energy storage box, to reduce the upper and lower temperature difference in the energy storage box, so that the battery charging and discharging in the energy storage box can be in an ideal temperature charging and discharging environment, to improve the reuse performance of waste batteries, and to improve the quality of the energy storage box; the air induction plate 15 is provided with a diversion hole 16 or a diversion hole 16 is formed between the air induction plate 15 and the inner wall of the air supply duct 10; so that the cooling air can diffuse to the corresponding return air outlet 13 through each group of battery packs 001 through the corresponding air outlet 12;

[0063] The number of the air outlets 12 of the air supply duct 10 is consistent with the number of the liquid cooling plates 1, and the air outlets 12 are arranged at the rear end of the liquid cooling plates 1 in a one-to-one correspondence; the number of the air induction plates 15 is consistent with the number of the air outlets 12, and the air induction plates 15 are arranged at the rear end of the air outlets 12 in a one-to-one correspondence;

[0064] The return air duct 11 extends in the height direction, and is arranged at the front side of the head end of the liquid cooling plate 1. The number of return air ports 13 of the return air duct 11 is consistent with the number of liquid cooling plates 1, and the return air ports 13 are arranged at the front end of the liquid cooling plate 1 in a one-to-one correspondence with the liquid cooling plate 1. The front and back correspond to the front and back of the energy storage box in the width direction, the return air direction is the front, and the air supply direction is the rear.

[0065] In this embodiment, the air inlet plate 15 is inclined downward from the back to the front, and the diverter hole 16 is opened on the air inlet plate 15. The inclined air inlet plate 15 can better enhance the initial kinetic energy of the cooling air entering the heat dissipation fins 14, and the staggered diverter hole 16 can ensure that the cooling air enters the next level at the bottom, and the diverter holes 16 opened on the adjacent air inlet plates 15 in the height direction are staggered, so that the cooling air entering the next level is stored and has the initial kinetic energy to blow to the battery pack 001, and then diffuses downward step by step; the air inlet plate 15 at the bottom does not need to have the diverter hole 16 to directly guide the air to the corresponding battery pack for cooling.

[0066] In this embodiment, the diverter holes 16 opened on the adjacent air ducting plates 15 in the height direction are staggered; the diverter holes 16 staggered on the adjacent air ducting plates 15 in the height direction have an overlapping area 17; the blowing method from top to bottom can obtain greater initial kinetic energy, which is beneficial to the heat dissipation of the battery pack 001. The setting of the overlapping area 17 can make the cooling air flowing in the height direction have sufficient wind pressure, and the cooling air delivered to the heat dissipation fins 14 also has a certain wind pressure under the setting of the air ducting plates 15, thereby achieving the purpose of autonomous air supply and return for each layer of battery packs.

[0067] In this embodiment, the air outlet 12 and the return air outlet 13 are arranged opposite to each other in the extension direction of the heat dissipation fins 14, the middle of the air outlet 12 in the height direction is higher than the middle of the air outlet 12 in the height direction, and the middle of the air outlet 12 in the height direction is close to the heat dissipation surface;

[0068] There are a plurality of diverter holes 16 on the air induction plate 15, and the aperture size of the diverter holes 16 gradually decreases from front to back, and the spacing between adjacent holes gradually increases from front to back; the closer the diverter holes 16 are to the air outlet 12, the smaller their size and the farther their spacing, the greater the kinetic energy of the air outlet, thereby ensuring the cooling capacity of the heat dissipation fins 14, and in this solution, as Figure 7 As shown, it shows the position of the diversion holes 16 on the two air guide plates 15 from top to bottom. Two air guide plates 15 are grouped together, and the stacking of the two is repeated downward. An overlapping area 17 is always reserved in the middle, so that the wind flow from top to bottom passes through each layer of air guide plates 15, and the cooling of each layer of battery packs is ensured to be consistent as much as possible.

[0069] The aperture sizes of the return air vents 13 gradually decrease from bottom to top; the setting of the return air vents 13 can actively guide the return air, improve the heat dissipation efficiency of the battery pack, and the size becomes smaller towards the top, which can make up for the controllable temperature difference caused by insufficient output pressure of some bottom air outlets 12, further ensure the ambient temperature in the energy storage box, and ensure the operating temperature of each battery pack 001.

[0070] In this embodiment, Figure 2 As shown, the air supply duct 10 is roughly located in the middle of the battery pack 001 in the horizontal direction, and the return air ducts 11 are two symmetrically arranged at both ends of the air supply duct 10. The return air has good consistency and can assist in cooling the heat dissipation fins 14 better, and the air supply duct 10 is on the rear side of the battery pack 001, and the return air duct 11 is arranged on the front side of the battery pack 001, wherein the return air duct 11 can replace the column of the current battery pack 001 bracket to save cost and space. The setting of two groups of return air ducts 11 is more conducive to the dissipation of heat of the battery pack 001, and the heat dissipation consistency of the battery pack 001 is good, which can ensure the ambient temperature in the energy storage box and the operating temperature of a single battery pack 001.

[0071] In this embodiment, the heat dissipation fins 14 are multiple pieces, and the multiple pieces of heat dissipation fins 14 are arranged in parallel along the set direction I, and the heights of the multiple pieces of heat dissipation fins 14 along the set direction I gradually increase from the middle to both sides;

[0072] like Figure 2 and Figure 6 As shown, the set direction is the length direction of the energy storage box, the heat dissipation fins 14 extend along the depth direction of the battery pack 001 and are arranged in parallel along the horizontal direction of the battery pack 001, and a plurality of the heat dissipation fins 14 approximately form a wind passing area with a concave middle portion in the cross section in the height direction; the air outlet 12 is directly opposite to the horizontal front end of the heat dissipation fin 14, and the top edge connection line of a plurality of the heat dissipation fins 14 is an arc with a concave middle portion and symmetrical sides. This structure can provide a favorable and fast wind passing channel under air cooling conditions, and can quickly take away the heat of the heat dissipation fins 14 under wind pressure conditions, thereby improving the heat dissipation capacity of the liquid cooling plate 1.

[0073] In this embodiment, the ends of the heat dissipation fins 14 of the plurality of sheets along the set direction I gradually shrink inward from both sides to the middle; that is, the lengths of the heat dissipation fins 14 of the plurality of sheets gradually increase from the middle to both sides, and the heat dissipation fins 14 approximately form a buffer zone with the head end recessed inward in the horizontal cross section; the buffer zone faces the air outlet 12, and the spacing of the heat dissipation fins 14 of the plurality of sheets along the set direction I gradually decreases from the middle to both ends, so as to form a structure with better heat dissipation capacity in coordination with the overwinding zone. The buffer zone of this scheme is opposite to the air outlet 12, and the front end connecting line of the plurality of heat dissipation fins 14 is an arc with the middle recessed inward and symmetrical on both sides. The buffer zone can stabilize the wind pressure passing through the heat dissipation fins 14 and can reduce the direct wind noise, while meeting the cooling requirements for the battery pack 001.

[0074] The specific structure and distribution of the heat dissipation fins 14 of this solution, together with the specific structure of the air outlet 12 and the return air outlet 13, make the air flow velocity through the middle of the battery pack 001 faster and the internal pressure in the horizontal middle of the battery pack 001 lower. Under the conditions of negative pressure on both sides of the front end and positive pressure at the rear end, the cooling efficiency of the battery pack 001 is higher, and the structure with the air outlet 12 at the top and the return air outlet 13 at the bottom can further improve the cooling efficiency of the battery pack 001.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A cooling system for energy storage charging stations for the reuse of retired vehicle power batteries, characterized in that: It includes an air conditioning cooling subsystem for adjusting the ambient temperature of the energy storage box of the energy storage charging station and a battery pack liquid cooling subsystem for adjusting the battery pack to a set use temperature; Also included is an additional cooling subsystem; the additional cooling subsystem includes a liquid cooling plate, the liquid cooling plate has a liquid cooling cavity, the liquid cooling cavity has a liquid inlet connected to the liquid supply end of the battery pack liquid cooling subsystem and a liquid outlet connected to the liquid return end of the battery pack liquid cooling subsystem; The liquid inlet is provided with a liquid inlet valve that is controlled to open and close. A plurality of battery packs are stacked in the box of the energy storage charging station along the height direction, and a group of liquid cooling plates is correspondingly provided on each group of battery packs; It also includes a temperature monitoring subsystem and an information processing subsystem. The temperature monitoring subsystem is used to monitor the operating temperature of each liquid cooling plate and transmit the temperature information to the information processing subsystem. The information processing subsystem is used to receive the processing temperature information and control the opening or closing of the designated liquid inlet valve according to the processing result.

2. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 1 is characterized in that: The temperature monitoring subsystem is also used to monitor the operating temperature of each battery pack and transmit the temperature information to the information processing subsystem; If the operating temperature of the battery pack received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate by more than 5°C, the liquid inlet valve of the corresponding liquid cooling plate is controlled to open; if the operating temperature of the battery pack received by the information processing subsystem differs from the operating temperature of the corresponding liquid cooling plate by no more than 5°C, the liquid inlet valve of the corresponding liquid cooling plate is controlled to close.

3. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 1 is characterized in that: The liquid outlet is provided with a liquid outlet valve which is controlled to open and close. Each liquid cooling plate has a set of corresponding liquid inlet valves and liquid outlet valves. The liquid outlet valves and liquid inlet valves are controlled to open or close simultaneously.

4. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 1 is characterized in that: A spoiler column is arranged in the liquid cooling cavity. The spoiler column is located in the middle of the horizontal section of the liquid cooling cavity. The spoiler column has a spoiler plate protruding toward the liquid inlet. The spoiler plates are a plurality of plates arranged at intervals. The spoiler column also has a flow surface protruding toward the liquid outlet.

5. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 4 is characterized in that: The spoiler column is provided with a plurality of functional holes, the plurality of functional holes are distributed on the spoiler column at intervals in the height direction, and the functional holes are located between adjacent spoilers; The density of the functional holes distributed in the middle of the spoiler column in the height direction exceeds the density of the functional holes distributed at both ends of the spoiler column in the height direction.

6. The cooling system for energy storage charging station for recycling the whole package of retired vehicle power batteries according to claim 1 is characterized in that: The additional cooling subsystem also includes an air supply duct connected to the air outlet end of the air conditioning cooling subsystem and a return air duct connected to the air return end of the air conditioning cooling subsystem; The liquid cooling plate also has a conducting surface and a heat dissipation surface opposite to each other, the conducting surface is attached to the top surface or the bottom surface of the battery pack, and the heat dissipation surface is provided with heat dissipation fins; The air supply duct has an air outlet, and the air return duct has an air return outlet, and the air outlet and the air return outlet are arranged opposite to each other in the extension direction of the heat dissipation fins; The direction of the cooling liquid flowing in the liquid cooling cavity intersects with the extending direction of the heat dissipation fins.

7. The cooling system for energy storage charging station for recycling the whole package of retired vehicle power batteries according to claim 6 is characterized in that: The air supply duct extends in the height direction, and the air supply duct is arranged at the rear side of the end of the liquid cooling plate. An air induction plate for guiding the gas to the air outlet is provided in the air supply duct, and a flow diversion hole is opened on the air induction plate or a flow diversion hole is formed between the air induction plate and the inner wall of the air supply duct; The number of air outlets of the air supply duct is consistent with the number of liquid cooling plates, and the air outlets are arranged at the rear end of the liquid cooling plates in a one-to-one correspondence; the number of the air induction plates is consistent with the number of air outlets, and the air induction plates are arranged at the rear end of the air outlets in a one-to-one correspondence; The return air duct extends in the height direction, the return air duct is arranged at the front side of the head end of the liquid cooling plate, the number of return air ports of the return air duct is consistent with the number of liquid cooling plates, and the return air ports are arranged at the front end of the liquid cooling plate in a one-to-one correspondence with the liquid cooling plates.

8. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 7 is characterized in that: The air induction plate is inclined downward from the back to the front, and the diversion holes are provided on the air induction plate. The diversion holes provided on adjacent air induction plates are staggered in the height direction; the diversion holes staggered on adjacent air induction plates in the height direction have an overlapping area.

9. The cooling system for energy storage charging stations for recycling the entire package of retired vehicle power batteries according to claim 7 is characterized in that: The air outlet and the return air outlet are arranged opposite to each other in the extension direction of the heat dissipation fins, the middle part of the air outlet in the height direction is higher than the middle part of the air outlet in the height direction, and the middle part of the air outlet in the height direction is close to the heat dissipation surface; There are a plurality of diversion holes on the air induction plate, the apertures of the plurality of diversion holes gradually decrease from front to back, and the spacing between adjacent holes gradually increases from front to back; The aperture sizes of the plurality of return air vents gradually decrease from bottom to top.

10. The cooling system for energy storage charging station for recycling the whole package of retired vehicle power batteries according to claim 1 is characterized in that: The heat dissipation fins are a plurality of fins, and the plurality of heat dissipation fins are arranged in parallel along a set direction I, and the heights of the plurality of heat dissipation fins along the set direction I gradually increase from the middle to both sides; The ends of the plurality of heat dissipation fins gradually shrink inward from both sides to the middle along the set direction I; The spacing between the heat dissipation fins along the set direction I gradually decreases from the middle to both ends.

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