Energy storage battery cluster uniform flow air duct system and battery cluster

Abstract

The present application provides an energy storage battery cluster flow-balanced air duct system and a battery cluster. The energy storage battery cluster flow-balanced air duct system includes a flow diverter, a counter-flow drainage device and a flow-balanced plate. The flow diverter is used to divert the airflow from the air outlet of the air conditioner, and the two airflows in different directions are intersected and counter-flowed in the counter-flow drainage device to form a vertical downward airflow that enters the flow-balanced plate. Under the action of the flow-balanced plate, the air volume of each layer of battery packs in the battery cluster is uniform, the temperature difference between battery cells is reduced, and the battery life is improved. Among them, in the counter-flow drainage device, the counter-flow effect of the front and rear flows forms a higher pressure area in the middle of the chamber, and the direction of the airflow in the pressure area changes from horizontal movement to downward movement, so that the airflow from the outlet of the counter-flow drainage device and entering the flow-balanced plate is more uniform.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage batteries, and in particular to an energy storage battery cluster uniform flow air duct system and a battery cluster. Background Art

[0002] A battery cluster refers to a battery module composed of several layers of battery packs. Due to the large size of the battery cluster, the conventional heat dissipation method uses an integrated air conditioner and air duct heat dissipation. The cold air from the air conditioner exchanges heat and cools the battery pack through the air duct, thereby ensuring that the battery pack is at a suitable working environment temperature.

[0003] In the prior art, the cooling air ducts of the battery cluster are mostly arranged above or behind the battery cluster body, and the cold air is biased to one side. The air volume of each layer of battery packs in the battery cluster is uneven, resulting in a large temperature difference between each battery cell, shortening the battery life. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an energy storage battery cluster uniform flow air duct system and a battery cluster, so as to solve the problem in the prior art that the air volume of each layer of battery packs in the battery cluster is uneven, resulting in a large temperature difference between each battery cell and shortening the battery life.

[0005] The present application implements a provided energy storage battery cluster flow duct system, comprising: a flow splitter, a counterflow drainage device and a flow equalizing plate; the flow equalizing plate is installed at the bottom of the counterflow drainage device; the air outlet of the flow splitter is connected to the air inlet of the counterflow drainage device;

[0006] The counter-flow drainage device comprises a counter-flow drainage channel; the two ends of the counter-flow drainage channel are a main air inlet and an auxiliary air inlet, and an air outlet is arranged at the bottom of the counter-flow drainage channel;

[0007] The cold air coming in from the main air inlet and the cold air coming in from the auxiliary air inlet meet at the air outlet of the counter-flow channel and counter-flow to form a vertical downward airflow;

[0008] The airflow coming out of the air outlet of the counter-flow drainage channel enters the flow equalizing plate, and the air outlet is arranged on the side of the flow equalizing plate.

[0009] In the above technical solution, the energy storage battery cluster flow duct system includes a flow diversion device, a counter-flow drainage device and a flow equalizing plate. The flow diversion device is used to divert the airflow from the air outlet of the air conditioner, and the two airflows in different directions are intersected and counter-flowed in the counter-flow drainage device to form a vertical downward airflow that enters the flow equalizing plate. Under the action of the flow equalizing plate, the air volume of each layer of battery packs in the battery cluster is uniform, the temperature difference between battery cells is reduced, and the battery life is improved. Among them, in the counter-flow drainage device, the counter-flow effect of the front and rear flows forms a higher pressure area in the middle of the chamber, and the direction of the airflow in this pressure area changes from horizontal movement to downward movement, so that the airflow from the outlet of the counter-flow drainage device and entering the flow equalizing plate is more uniform.

[0010] In some optional embodiments, the diversion device includes a guide air duct and a plurality of guide plates; the plurality of guide plates are disposed in the guide air duct.

[0011] In the above technical solution, the diverter device is connected between the air conditioner outlet and the counter-drainage device, and the diverter device guides the cold air from the air conditioner outlet to the counter-drainage device. The guide plate in the diverter device can avoid the situation where the air outlet of the air conditioner outlet is deflected, resulting in more air entering one side of the counter-drainage device.

[0012] In some optional embodiments, the flow diverter device includes a first flow guide plate, a second flow guide plate, a third flow guide plate, and a fourth flow guide plate arranged in sequence from left to right; wherein the second flow guide plate and the third flow guide plate are both perpendicular to the air outlet plane of the flow diverter device;

[0013] The first guide plate, the second guide plate, the third guide plate and the fourth guide plate divide the airflow from the air outlet of the air conditioner into a first airflow, a second airflow, a third airflow, a fourth airflow and a fifth airflow in different directions.

[0014] In the above technical solution, under the action of the guide air duct and multiple guide plates, the airflow from the air outlet of the air conditioner is divided into multiple airflows in different directions, so that the airflows in different directions can be sent into different channels in the counter-flow device.

[0015] In some optional embodiments, the flow diverter device further includes a fifth guide plate, which is disposed between the second guide plate and the third guide plate, and is parallel to the second guide plate.

[0016] In the above technical solution, the third airflow is split in the counter-drainage device to form multiple airflows, which are respectively counteracted by the first airflow, the second airflow, the fourth airflow and the fifth airflow in the counter-drainage device. Therefore, a fifth guide plate is arranged between the second guide plate and the third guide plate in the splitting device to reduce the deflection of the third airflow after entering the counter-drainage device, so that the air volume of the multiple airflows after the third airflow is split is more uniform.

[0017] In some optional embodiments, the counter-drainage device includes a first main air inlet, a second main air inlet, an auxiliary air inlet, a third main air inlet and a fourth main air inlet arranged in sequence from left to right; the counter-drainage channel includes a first counter-drainage channel, a second counter-drainage channel, a third counter-drainage channel and a fourth counter-drainage channel;

[0018] The first airflow enters the first channel through the first main air inlet, the second airflow enters the second channel through the second main air inlet, the third airflow enters the third channel through the auxiliary air inlet, the fourth airflow enters the fourth channel through the third main air inlet, and the fifth airflow enters the fifth channel through the fourth main air inlet;

[0019] A diversion structure is provided on a side of the third channel away from the secondary air inlet, and the diversion structure diverts the third airflow into the sixth channel, the seventh channel, the eighth channel and the ninth channel respectively;

[0020] The first channel, the eighth channel and the third channel are connected in sequence to form a first counter-flow drainage channel; the air outlet of the first counter-flow drainage channel is located at the bottom of the first channel;

[0021] The second channel, the sixth channel and the third channel are connected in sequence to form a second counter-drainage channel; the air outlet of the second counter-drainage channel is located at the bottom of the second channel;

[0022] The fourth channel, the seventh channel and the third channel are connected in sequence to form a third counter-hedging and drainage channel; the air outlet of the third counter-hedging and drainage channel is located at the bottom of the fourth channel;

[0023] The fifth channel, the ninth channel and the third channel are connected in sequence to form a fourth counter-drainage channel; the air outlet of the fourth counter-drainage channel is located at the bottom of the fifth channel.

[0024] In the above technical solution, the third airflow is diverted to form multiple airflows by using a diversion structure. In the first channel, the first airflow in one of the incoming flow directions of the channel is collided with the airflow after the diversion of the third airflow in another incoming flow direction, and a vertical downward airflow is formed. In the second channel, the second airflow in one of the incoming flow directions of the channel is collided with the airflow after the diversion of the third airflow in another incoming flow direction, and a vertical downward airflow is formed. In the third channel, the fourth airflow in one of the incoming flow directions of the channel is collided with the airflow after the diversion of the third airflow in another incoming flow direction, and a vertical downward airflow is formed. In the fourth channel, the fifth airflow in one of the incoming flow directions of the channel is collided with the airflow after the diversion of the third airflow in another incoming flow direction, and a vertical downward airflow is formed.

[0025] In some optional embodiments, the diversion structure includes: two oppositely disposed bent guide plates.

[0026] In some optional embodiments, it further includes a first mesh plate, a second mesh plate, a third mesh plate and a fourth mesh plate;

[0027] The first mesh plate and the second mesh plate are arranged in the second channel, the first mesh plate and the second mesh plate are parallel to the cross section of the second channel, the first mesh plate is close to the air inlet of the hedging drainage device, and the second mesh plate is far away from the air inlet of the hedging drainage device;

[0028] The third mesh plate and the fourth mesh plate are arranged in the fourth channel, and the third mesh plate, the fourth mesh plate and the cross section of the fourth channel are parallel. The third mesh plate is close to the air inlet of the hedging drainage device, and the fourth mesh plate is far away from the air inlet of the hedging drainage device.

[0029] Due to the impact of the airflow in the channel, low-speed areas are easily formed on both sides of the channel outlet. The small airflow rate in the low-speed areas on both sides of the channel outlet will cause the flow equalizing effect of the flow equalizing plate to deteriorate. Therefore, in this embodiment, the first mesh plate and the second mesh plate are arranged in the second channel, and the third mesh plate and the fourth mesh plate are arranged in the fourth channel. When the airflow coming from the incoming direction of the channel passes through the mesh plate, a part of the airflow will be blocked by the mesh plate and the flow direction will be changed to vertically downward, thereby accelerating the airflow on both sides of the channel outlet, thereby avoiding the formation of low-speed areas on both sides of the channel outlet, and the airflow entering the flow equalizing plate is more uniform.

[0030] In some optional embodiments, the current balancing plate includes a first current balancing plate, a second current balancing plate, a third current balancing plate and a fourth current balancing plate;

[0031] The lower end of the first mesh plate extends into the first current equalizing plate, the lower end of the second mesh plate extends into the second current equalizing plate, the lower end of the third mesh plate extends into the third current equalizing plate, and the lower end of the fourth mesh plate extends into the fourth current equalizing plate.

[0032] In the above technical solution, the lower end of the mesh plate extends into the corresponding flow equalizing plate, guiding the airflow entering the flow equalizing plate and reducing the deflection of the airflow in the process of vertically flowing downward from the top to the bottom of the flow equalizing plate.

[0033] In some optional embodiments, multiple rows of ventilation holes with different heights are provided on one or both sides of the flow equalizing plate; wherein, the higher the height, the larger the aperture of the ventilation hole.

[0034] In the above technical solution, in the equalizing plate, the airflow flows in from the top of the equalizing plate and flows out from the ventilation holes at different heights on the side of the equalizing plate, resulting in a large air flow, fast flow rate, and low static pressure at the top, and a small air flow, slow flow rate, and high static pressure at the bottom. Since the ventilation holes at the position of lower static pressure have a slower flow rate in the horizontal direction, and the ventilation holes at the position of higher static pressure have a faster flow rate in the horizontal direction. Therefore, the higher the height of the ventilation holes on the equalizing plate, the larger the aperture of the ventilation holes, so that the air output of the ventilation holes at different heights is more uniform.

[0035] A battery cluster provided in an embodiment of the present application comprises any one of the above energy storage battery cluster flow duct systems, and a battery cluster body;

[0036] The battery cluster body is installed in the energy storage battery cluster uniform flow air duct system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A structural diagram of an energy storage battery cluster flow-sharing air duct system provided for the implementation of this application;

[0039] Figure 2 A perspective view of a flow diversion device and a counter-flow drainage device provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the airflow direction of the flow diversion device and the counter-flow drainage device provided in the embodiment of the present application;

[0041] Figure 4 A perspective view of a current equalizing plate provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the airflow direction of the flow equalizer provided in an embodiment of the present application;

[0043] Figure 6 It is a schematic diagram of the airflow direction of the structure without counteracting effect;

[0044] Figure 7 Schematic diagram of the airflow direction of the hedging and drainage device and the flow equalizing plate without a mesh plate.

[0045] Icons: 1-diverter, 11-guide duct, 12-guide plate, 2-counterflow device, 21-first channel, 22-second channel, 23-third channel, 24-fourth channel, 25-fifth channel, 26-sixth channel, 27-seventh channel, 28-eighth channel, 29-ninth channel, 3-flow equalizing plate, 4-mesh plate. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0047] Please refer to Figure 1 , Figure 1 A structural diagram of a flow-equalizing air duct system for an energy storage battery cluster is provided for the implementation of this application, comprising: a flow splitter 1, a counter-flow drainage device 2 and a flow-equalizing plate 3.

[0048] The flow equalizing plate is installed at the bottom of the counter-drainage device; the air outlet of the diversion device is connected to the air inlet of the counter-drainage device; the counter-drainage device includes a counter-drainage channel; the two ends of the counter-drainage channel are the main air inlet and the auxiliary air inlet, and the air outlet is arranged at the bottom of the counter-drainage channel; the cold air entering from the main air inlet and the cold air entering from the auxiliary air inlet meet at the air outlet of the counter-drainage channel, and counter-attack to form a vertical downward airflow; the airflow coming out of the air outlet of the counter-drainage channel enters the flow equalizing plate, and the air outlet is arranged on the side of the flow equalizing plate.

[0049] Specifically, the energy storage battery cluster flow duct system is connected to an air conditioner, with a battery bracket inside, a flow divider and a counterflow device arranged above the battery bracket, and a flow equalizing plate arranged on both sides of the battery bracket. The air inlet of the counterflow device is connected to the air outlet of the air conditioner through the flow divider. The counterflow channel is a channel similar to a U-shaped structure, and the incoming flow from the two openings of the channel counteracts inside the channel.

[0050] In an embodiment of the present application, the energy storage battery cluster flow equalizing air duct system includes a diverter device, a counter-flow drainage device and a flow equalizing plate. The diverter device is used to divert the airflow from the air outlet of the air conditioner, and the two airflows in different directions are intersected and offset in the counter-flow drainage device to form a vertical downward airflow that enters the flow equalizing plate. Under the action of the flow equalizing plate, the air volume of each layer of battery packs in the battery cluster is uniform, the temperature difference between battery cells is reduced, and the battery life is improved.

[0051] This embodiment provides a design of an energy storage battery cluster flow duct, the purpose of which is to ensure the uniformity of the cold air volume entering each battery pack. The outlet of the air conditioner guides the airflow through a diversion device and is connected to a counterflow device. The counterflow device is provided with two groups of symmetrical air outlets of different sizes, which are vertically connected to the flow equalizing plate. Finally, the cold air is directed to each battery pack through the ventilation holes of the flow equalizing plate to achieve the ultimate cooling effect.

[0052] The counter-flow drainage device of this embodiment has the function of counter-flowing airflow. Figure 6 As shown, if a structure without airflow counteraction is used, the airflow will rush directly from the front of the structure to the rear of the structure after being distributed by the diversion device, which will cause the airflow in the equalizing plate below the structure to be concentrated on the rear of the equalizing plate, resulting in serious uneven distribution of airflow in the equalizing plate. In the counter-flow device of this embodiment, the counter-flow effect of the front and rear airflows forms a higher pressure area in the middle of the chamber, and the direction of the airflow in this pressure area changes from horizontal movement to downward movement, making the airflow going out from the outlet of the counter-flow device and entering the equalizing plate more uniform, effectively solving the problem of serious uneven airflow in the equalizing plate caused by only one-way airflow in the front.

[0053] Please refer to Figure 2 and Figure 3 , Figure 2 A perspective view of a diversion device and a counter-drainage device provided in an embodiment of the present application, Figure 3 Schematic diagram of the airflow direction of the diversion device and the counter-drainage device provided in the embodiment of the present application.

[0054] In some optional embodiments, the flow diversion device includes a flow guide duct 11 and a plurality of flow guide plates 12; the plurality of flow guide plates are disposed in the flow guide duct.

[0055] In the embodiment of the present application, the diverter device is connected between the air conditioner outlet and the counter-drainage device, and the diverter device guides the cold air from the air conditioner outlet to the counter-drainage device. The guide plate in the diverter device can prevent the air outlet from being skewed, resulting in more air entering one side of the counter-drainage device.

[0056] The number of guide plates is related to the number of equalizing plates. For example, if the number of equalizing plates is n, the number of guide plates is n+m, where n is a positive integer greater than or equal to 1, and m is an integer greater than or equal to 0. The number of guide plates is n+m, and the corresponding diversion device diverts the airflow from the air outlet of the air conditioner into n+m+1 airflows, where the m+1 airflows are diverted to obtain n airflows (if m+1 is equal to n, no diversion is required), and the 2n airflows are offset in pairs in the n counter-flow drainage channels, and then respectively sent to the n equalizing plates. The following embodiments are described in detail using four equalizing plates as an example.

[0057] In some optional embodiments, the flow diverter device includes a first flow guide plate, a second flow guide plate, a third flow guide plate, and a fourth flow guide plate arranged in sequence from left to right; wherein the second flow guide plate and the third flow guide plate are both perpendicular to the air outlet plane of the flow diverter device;

[0058] The first guide plate, the second guide plate, the third guide plate and the fourth guide plate divide the airflow from the air outlet of the air conditioner into a first airflow, a second airflow, a third airflow, a fourth airflow and a fifth airflow in different directions.

[0059] In an embodiment of the present application, under the action of the guide air duct and multiple guide plates, the airflow from the air outlet of the air conditioner is divided into multiple airflows in different directions, so that the airflows in different directions can be sent into different channels in the counter-flow device.

[0060] In some optional embodiments, the flow diverter device further includes a fifth guide plate, which is disposed between the second guide plate and the third guide plate, and is parallel to the second guide plate.

[0061] In an embodiment of the present application, the third airflow is split in the counter-drainage device to form multiple airflows, and these airflows are respectively offset with the first airflow, the second airflow, the fourth airflow and the fifth airflow in the counter-drainage device. Therefore, a fifth guide plate is arranged between the second guide plate and the third guide plate in the splitting device to reduce the deflection of the third airflow after entering the counter-drainage device, so that the air volume of the multiple airflows after the third airflow is split is more uniform.

[0062] In this embodiment, the first guide plate, the second guide plate, the fifth guide plate, the third guide plate and the fourth guide plate are all trapezoidal guide plates, which are fixed on the rectangular fixed connecting plate. The overall structure of the trapezoidal guide plate and the rectangular fixed connecting plate is a symmetrical structure in the horizontal and vertical directions. Both ends of the guide air duct are open ends, one end is the air inlet end connected to the air outlet of the air conditioner, and the other end is the air outlet end connected to the counter-flow guide device. In the direction from the air inlet end to the air outlet end, the width of the cross section of the guide air duct gradually increases, and the height of the cross section of the guide air duct gradually decreases. There are folding structures on both sides of the rectangular fixed connecting plate to facilitate connection with the flange part of the air inlet end of the guide air duct. Among them, the diversion angle of the trapezoidal guide plate can be calculated and matched according to the air volume requirements in each direction. The diversion device of this embodiment effectively solves the problem of uneven distribution of the overall air volume due to the air conditioning refrigeration cold air being biased to one side at the air outlet end.

[0063] In some optional embodiments, the counter-drainage device includes a first main air inlet, a second main air inlet, an auxiliary air inlet, a third main air inlet and a fourth main air inlet arranged in sequence from left to right; the counter-drainage channel includes a first counter-drainage channel, a second counter-drainage channel, a third counter-drainage channel and a fourth counter-drainage channel;

[0064] The first airflow enters the first channel 21 through the first main air inlet, the second airflow enters the second channel 22 through the second main air inlet, the third airflow enters the third channel 23 through the auxiliary air inlet, the fourth airflow enters the fourth channel 24 through the third main air inlet, and the fifth airflow enters the fifth channel 25 through the fourth main air inlet;

[0065] A diversion structure is provided on the side of the third channel away from the secondary air inlet, and the diversion structure diverts the third airflow into the sixth channel 26, the seventh channel 27, the eighth channel 28 and the ninth channel 29 respectively;

[0066] The first channel, the eighth channel and the third channel are connected in sequence to form a first counter-flow drainage channel; the air outlet of the first counter-flow drainage channel is located at the bottom of the first channel;

[0067] The second channel, the sixth channel and the third channel are connected in sequence to form a second counter-drainage channel; the air outlet of the second counter-drainage channel is located at the bottom of the second channel;

[0068] The fourth channel, the seventh channel and the third channel are connected in sequence to form a third counter-hedging and drainage channel; the air outlet of the third counter-hedging and drainage channel is located at the bottom of the fourth channel;

[0069] The fifth channel, the ninth channel and the third channel are connected in sequence to form a fourth counter-drainage channel; the air outlet of the fourth counter-drainage channel is located at the bottom of the fifth channel.

[0070] In an embodiment of the present application, a diversion structure is used to divert the third airflow to form multiple airflows. In the first channel, the first airflow in one of the incoming flow directions of the channel is counter-flowed with the third airflow in another incoming flow direction after the airflow is diverted, and a vertical downward airflow is formed. In the second channel, the second airflow in one of the incoming flow directions of the channel is counter-flowed with the third airflow in another incoming flow direction after the airflow is diverted, and a vertical downward airflow is formed. In the third channel, the fourth airflow in one of the incoming flow directions of the channel is counter-flowed with the third airflow in another incoming flow direction after the airflow is diverted, and a vertical downward airflow is formed. In the fourth channel, the fifth airflow in one of the incoming flow directions of the channel is counter-flowed with the third airflow in another incoming flow direction after the airflow is diverted, and a vertical downward airflow is formed.

[0071] In some optional embodiments, the diversion structure includes: two oppositely disposed bent guide plates.

[0072] It should be clear that the diversion structure may also be other structures, such as two oppositely arranged arc-shaped guide plates, or a structure in which a single channel is bifurcated into four channels.

[0073] Specifically, the counter-drainage device has a rectangular symmetrical structure, and there are a total of 4 air outlets at the bottom of the counter-drainage device, which are air outlet No. 1, air outlet No. 2, air outlet No. 3 and air outlet No. 4 from left to right. The cross-sectional areas of air outlet No. 1 and air outlet No. 4 are equal, the cross-sectional areas of air outlet No. 2 and air outlet No. 3 are equal, and the cross-sectional areas of air outlet No. 1 and air outlet No. 4 are smaller than the cross-sectional areas of air outlet No. 2 and air outlet No. 3. 45-degree baffles are set at the four corners of the counter-drainage device, and guide panels with the same structure are set between air outlets No. 1 and No. 2, No. 3 and No. 4, and between No. 2 and No. 3. The guide panels with the same structure are set. These guide panels are perpendicular to the upper and lower panels of the counter-drainage device, forming 4 chambers similar to U-shaped structures, namely the first counter-drainage channel, the second counter-drainage channel, the third counter-drainage channel and the fourth counter-drainage channel.

[0074] In this embodiment, the flow area of ​​the third channel is the largest, and the flow areas of the first channel and the fifth channel are the smallest. A diversion structure is provided at one end of the third channel away from the air inlet, and about half of the incoming airflow (i.e., the third airflow) of the counterflow guide device is diverted through the diversion structure and the direction of the diverted airflow is changed, so that the four diverted airflows are deflected 90 degrees to the left or right and then enter the sixth channel, the seventh channel, the eighth channel, and the ninth channel respectively. The airflows in the sixth channel, the seventh channel, the eighth channel, and the ninth channel are deflected 90 degrees again and then enter the second channel, the fourth channel, the first channel, and the fifth channel respectively. At this time, the first channel, the second channel, the fourth channel, and the fifth channel will lead the counterflow effect of the front and rear airflows to form a higher pressure area in the middle of the chamber, and the direction of the airflow in this pressure area changes from horizontal movement to downward movement.

[0075] The counter-flow drainage device of this embodiment divides the inner chamber of the device into four chambers similar to a U-shaped structure. The chambers of this structure can effectively form a vertical downward airflow of cold air at the counter-flow point, and multiple sets of baffles can effectively reduce the accumulation of some air volume.

[0076] In some optional embodiments, a mesh plate 4 is further included; the mesh plate 4 includes a first mesh plate, a second mesh plate, a third mesh plate and a fourth mesh plate;

[0077] The first mesh plate and the second mesh plate are arranged in the second channel, the first mesh plate and the second mesh plate are parallel to the cross section of the second channel, the first mesh plate is close to the air inlet of the hedging drainage device, and the second mesh plate is far away from the air inlet of the hedging drainage device;

[0078] The third mesh plate and the fourth mesh plate are arranged in the fourth channel, and the third mesh plate, the fourth mesh plate and the cross section of the fourth channel are parallel. The third mesh plate is close to the air inlet of the hedging drainage device, and the fourth mesh plate is far away from the air inlet of the hedging drainage device.

[0079] It should be clarified that double mesh plates can also be set in the first channel and the fifth channel. If mesh plates are also set in the first channel and the fifth channel, the opening rate of the mesh plates in the first channel and the fifth channel is greater than the opening rate of the mesh plates in the second channel and the fourth channel.

[0080] Please refer to Figure 7 Under the action of airflow counteraction in the channel, low-speed areas are easily formed on both sides of the channel outlet. The airflow in the low-speed areas on both sides of the channel outlet is small, which will lead to poor flow equalization effect of the flow equalizer. Therefore, the first mesh plate and the second mesh plate are arranged in the second channel, and the third mesh plate and the fourth mesh plate are arranged in the fourth channel. When the airflow coming from the incoming direction of the channel passes through the mesh plate, a part of the airflow will be blocked by the mesh plate and change the flow direction to vertically downward, thereby accelerating the airflow on both sides of the channel outlet, thereby avoiding the formation of low-speed areas on both sides of the channel outlet, and the airflow entering the flow equalizer is more uniform.

[0081] Specifically, the first mesh plate, the second mesh plate, the third mesh plate and the fourth mesh plate of the present embodiment are all rectangular panels, and hexagonal mesh holes are arranged on the panels.

[0082] It should be clarified that these mesh panels can also be curved panels or bent panels, etc., and circular holes, quadrilateral holes, octagonal holes, etc. can also be set on the panels.

[0083] Please refer to Figure 4 and Figure 5 , Figure 4 A perspective view of a current equalizing plate provided in an embodiment of the present application; Figure 5 A schematic diagram of the airflow direction of the flow equalizing plate provided in an embodiment of the present application.

[0084] In some optional embodiments, the current balancing plate includes a first current balancing plate, a second current balancing plate, a third current balancing plate and a fourth current balancing plate;

[0085] The lower end of the first mesh plate extends into the first current equalizing plate, the lower end of the second mesh plate extends into the second current equalizing plate, the lower end of the third mesh plate extends into the third current equalizing plate, and the lower end of the fourth mesh plate extends into the fourth current equalizing plate.

[0086] In the embodiment of the present application, the lower end of the mesh plate extends into the corresponding flow equalizing plate, guiding the airflow entering the flow equalizing plate and reducing the deflection of the airflow during the vertical downward flow from the top to the bottom of the flow equalizing plate.

[0087] The first and fourth flow equalizing plates of this embodiment are single-sided risers, and the second and third flow equalizing plates are double-sided risers. These flow equalizing plates are respectively arranged on the sides of the battery rack. The "single-sided riser" and "double-sided riser" are provided with strip-shaped air outlets of different sizes from top to bottom. Each row of strip-shaped air outlets corresponds to a group of battery modules, so that the air supply conditions of each layer of battery packs are uniform, and the air volume of the entire battery cluster from top to bottom can be in a balanced state. The setting of independent air supply outlets of single-sided and double-sided risers can supply air independently for each layer of battery modules, and changing the size and spacing of the riser air outlets effectively alleviates the problem of cold air attenuation in the flow direction, thereby ensuring that there is enough cold air blown out from the bottom of the riser, so that the air volume of each layer of independent air supply outlets of each group of risers is uniform, effectively reducing the temperature difference between batteries and improving the life of the system.

[0088] In some optional embodiments, multiple rows of ventilation holes with different heights are provided on one or both sides of the flow equalizing plate; wherein, the higher the height, the larger the aperture of the ventilation hole.

[0089] In the embodiment of the present application, in the flow equalizing plate, the air flow flows in from the top of the flow equalizing plate and flows out from the ventilation holes at different heights on the side of the flow equalizing plate, resulting in a large air flow, fast flow rate, and low static pressure at the top, and a small air flow, slow flow rate, and high static pressure at the bottom. Since the ventilation holes at the position of lower static pressure have a slower flow rate in the horizontal direction, and the ventilation holes at the position of higher static pressure have a faster flow rate in the horizontal direction. Therefore, the higher the height of the ventilation holes on the flow equalizing plate, the larger the aperture of the ventilation holes, so that the air output of the ventilation holes at different heights is more uniform.

[0090] It should be clarified that the flow equalizing plate can also be provided with an array of ventilation holes or a row of ventilation holes on its side, but the higher the height, the larger the aperture of the ventilation hole.

[0091] By setting ventilation holes of different sizes at different heights on the side of the flow equalizing plate, the size of the ventilation holes can be calculated and set according to the ventilation volume and the wind speed in the flow equalizing plate to ensure the uniformity of the horizontal air volume of each flow equalizing plate at different heights.

[0092] A battery cluster provided in an embodiment of the present application comprises any one of the above energy storage battery cluster flow duct systems, and a battery cluster body;

[0093] The battery cluster body is installed in the energy storage battery cluster uniform flow air duct system.

[0094] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, 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 direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0095] In addition, the units described 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.

[0096] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0097] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0098] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A uniform air duct system for energy storage battery clusters, characterized in that: include: Flow diversion device, hedging and drainage device and flow balancing plate; The flow balancing plate is installed at the bottom of the counter-flow drainage device; the air outlet of the flow splitter is connected to the air inlet of the counter-flow drainage device; The counter-flow drainage device comprises a counter-flow drainage channel; the two ends of the counter-flow drainage channel are a main air inlet and a secondary air inlet, and the bottom of the counter-flow drainage channel is provided with an air outlet; The cold air coming in from the main air inlet and the cold air coming in from the auxiliary air inlet meet at the air outlet of the counter-flow channel and counter-flow to form a vertical downward airflow; The airflow coming out of the air outlet of the counter-flow drainage channel enters the flow equalizing plate, and the air outlet is arranged on the side of the flow equalizing plate.

2. The energy storage battery cluster flow-balanced air duct system according to claim 1, characterized in that: The flow diversion device includes a flow guide duct and a plurality of flow guide plates; the plurality of flow guide plates are arranged in the flow guide duct.

3. The energy storage battery cluster flow-balanced air duct system according to claim 2, characterized in that: The flow diverter device comprises a first flow guide plate, a second flow guide plate, a third flow guide plate and a fourth flow guide plate arranged in sequence from left to right; wherein the second flow guide plate and the third flow guide plate are both perpendicular to the air outlet plane of the flow diverter device; The first guide plate, the second guide plate, the third guide plate and the fourth guide plate divide the airflow from the air outlet of the air conditioner into a first airflow, a second airflow, a third airflow, a fourth airflow and a fifth airflow in different directions.

4. The energy storage battery cluster uniform flow air duct system according to claim 3, characterized in that: The flow dividing device further includes a fifth guide plate, which is disposed between the second guide plate and the third guide plate, and is parallel to the second guide plate.

5. The energy storage battery cluster flow-balanced air duct system according to claim 3, characterized in that: The counter-drainage device includes a first main air inlet, a second main air inlet, a secondary air inlet, a third main air inlet and a fourth main air inlet arranged in sequence from left to right; the counter-drainage channel includes a first counter-drainage channel, a second counter-drainage channel, a third counter-drainage channel and a fourth counter-drainage channel; The first airflow enters the first channel through the first main air inlet, the second airflow enters the second channel through the second main air inlet, the third airflow enters the third channel through the auxiliary air inlet, the fourth airflow enters the fourth channel through the third main air inlet, and the fifth airflow enters the fifth channel through the fourth main air inlet; A diversion structure is provided on a side of the third channel away from the secondary air inlet, and the diversion structure diverts the third airflow into the sixth channel, the seventh channel, the eighth channel and the ninth channel respectively; The first channel, the eighth channel and the third channel are connected in sequence to form the first counter-hedging and drainage channel; the air outlet of the first counter-hedging and drainage channel is located at the bottom of the first channel; The second channel, the sixth channel and the third channel are connected in sequence to form the second counter-hedging and drainage channel; the air outlet of the second counter-hedging and drainage channel is located at the bottom of the second channel; The fourth channel, the seventh channel and the third channel are connected in sequence to form the third counter-hedging and drainage channel; the air outlet of the third counter-hedging and drainage channel is located at the bottom of the fourth channel; The fifth channel, the ninth channel and the third channel are connected in sequence to form the fourth counter-hedging and drainage channel; the air outlet of the fourth counter-hedging and drainage channel is located at the bottom of the fifth channel.

6. The energy storage battery cluster flow-balanced air duct system according to claim 5, characterized in that: The flow diversion structure comprises: two bent flow guide plates arranged opposite to each other.

7. The energy storage battery cluster flow-balanced air duct system according to claim 5, characterized in that: Also includes a first mesh plate, a second mesh plate, a third mesh plate and a fourth mesh plate; The first mesh plate and the second mesh plate are arranged in the second channel, the first mesh plate and the second mesh plate are parallel to the cross section of the second channel, the first mesh plate is close to the air inlet of the counter-drainage device, and the second mesh plate is far away from the air inlet of the counter-drainage device; The third mesh plate and the fourth mesh plate are arranged in the fourth channel, and the third mesh plate and the fourth mesh plate are parallel to the cross-section of the fourth channel. The third mesh plate is close to the air inlet of the counter-drainage device, and the fourth mesh plate is far away from the air inlet of the counter-drainage device.

8. The energy storage battery cluster flow-balanced air duct system according to claim 7, characterized in that: The current balancing plate includes a first current balancing plate, a second current balancing plate, a third current balancing plate and a fourth current balancing plate; The lower end of the first mesh plate extends into the first current equalizing plate, the lower end of the second mesh plate extends into the second current equalizing plate, the lower end of the third mesh plate extends into the third current equalizing plate, and the lower end of the fourth mesh plate extends into the fourth current equalizing plate.

9. The energy storage battery cluster flow-balanced air duct system according to claim 1, characterized in that: One or two sides of the flow equalizing plate are provided with multiple rows of ventilation holes of different heights; wherein, the higher the height, the larger the aperture of the ventilation hole.

10. A battery cluster, characterized in that: It comprises an energy storage battery cluster flow duct system as claimed in any one of claims 1 to 9, and a battery cluster body; The battery cluster body is installed in the energy storage battery cluster uniform flow air duct system.

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