Energy storage battery cluster

Abstract

The invention belongs to the technical field of batteries, and discloses an energy storage battery cluster which comprises a battery rack, a plurality of battery plug-in boxes and a control unit. The battery rack is provided with a plurality of mounting cavities arranged in the vertical direction, and the plurality of battery plug-in boxes are placed in the plurality of mounting cavities in a one-to-one correspondence mode. The battery rack comprises air ducts arranged on the two sides of the battery plug-in box respectively, the air ducts comprise inner side air duct plates, the inner side air duct plates are provided with multiple sets of air duct ventilation openings, the air duct ventilation openings and the installation cavities are arranged correspondingly, and the air ducts and the installation cavities are communicated through the air duct ventilation openings. A wind shielding assembly is arranged on the battery rack and comprises a wind shielding plate, the wind shielding plate is arranged in the air duct, the extending direction of the wind shielding plate is the depth direction of the battery rack, and the included angle theta between the wind shielding plate and the inner side air duct plate is adjustable. The control unit is used for controlling the adjusting angle of the wind shield so as to control the air volume of the air duct ventilation opening. The temperature distribution of each layer of battery subrack in the energy storage battery cluster is uniform, and the energy storage battery cluster has good heat dissipation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to an energy storage battery cluster. Background Art

[0002] The energy storage system is a new energy device, including a battery cluster. The battery cluster is a whole composed of multiple battery cells, and its characteristics such as capacity, voltage and operating temperature range will be more stable than those of a single battery cell. In the prior art, the battery cluster includes a battery rack and multiple battery plug-ins arranged in the battery rack. An air inlet is provided on the top of the battery rack, and the energy storage system is provided with an air conditioner. The cold air blown by the air conditioner enters the battery rack from the air inlet, and the cold air passes through the battery plug-in box and exchanges heat with the battery plug-in box, thereby taking away the heat generated by the battery plug-in box.

[0003] When the cooling air conditioner is turned on, the battery rack of the existing structure has a large air volume and low temperature on the upper layer of the battery rack, and the air volume decreases and the temperature increases as it goes down. The fans on the battery plug boxes are controlled by the battery management system, and the fans on all battery plug boxes are turned on and off at the same time. The air volume cannot be adjusted according to the temperature of the battery cells in each battery plug box, which leads to uneven distribution of cold air volume on each layer of battery plug boxes, and thus uneven distribution of temperature on each layer of battery plug boxes, resulting in a large temperature difference in the battery cluster as a whole, which seriously affects the performance and life of the battery cells.

[0004] Therefore, it is urgent to propose energy storage battery clusters to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an energy storage battery cluster, in which each layer of battery plug-in boxes has a uniform temperature distribution and has good heat dissipation performance.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The energy storage battery cluster is characterized by comprising a battery rack, a plurality of battery plug boxes and a control unit:

[0008] The battery rack has a plurality of installation cavities arranged along the vertical direction, and the plurality of battery plug boxes are placed in the plurality of installation cavities in a one-to-one correspondence;

[0009] The battery rack comprises air ducts respectively arranged on both sides of the battery plug box, the air ducts comprise inner air duct plates, the inner air duct plates are provided with a plurality of groups of air duct vents, the air duct vents and the mounting cavity are arranged correspondingly, and the air duct and the mounting cavity are connected through the air duct vents;

[0010] The battery rack is provided with a wind shield assembly, the wind shield assembly includes a wind shield plate, the wind shield plate is arranged in the air duct, the extension direction of the wind shield plate is the depth direction of the battery rack, and the angle θ between the wind shield plate and the inner air duct plate is adjustable;

[0011] The control unit is used to control the adjustment angle of the wind shield plate, thereby controlling the air output of the air duct vent.

[0012] Optionally, each group of the air duct vents includes a plurality of rows of through holes spaced apart in the vertical direction, the wind shield is disposed between two adjacent rows of through holes or below the bottom layer of through holes, and can at least block one row of through holes located above the wind shield.

[0013] Optionally, a plurality of temperature detection elements are arranged on the inner air duct plate in a vertical direction, and the temperature detection elements are signal-connected to the control unit.

[0014] Optionally, the wind shield assembly is provided in multiple groups, and the multiple groups of wind shield assemblies and the air duct vents are provided in one-to-one correspondence, and the angle θ between each wind shield plate and the inner air duct plate can be adjusted individually according to the measurement result of the temperature detection element.

[0015] Optionally, the air duct also includes two connecting parts respectively connected to the two sides of the inner air duct plate, and the wind shield assembly also includes a driving member connected to the control unit signal, the fixed end of the driving member is arranged on the connecting part, and the driving member is used to drive the wind shield plate to rotate.

[0016] Optionally, the air duct further comprises an outer air duct plate spaced apart from the inner air duct plate, and two side edges of the outer air duct plate extending in the vertical direction are respectively connected to the two connecting portions.

[0017] Optionally, a rotating shaft is connected to the side of the windshield, the driving member is arranged on the outside of the connecting portion, and one end of the rotating shaft can be rotatably passed through the connecting portion and connected to the output end of the driving member.

[0018] Optionally, a folding plate is provided on the side of the wind shield away from the rotating shaft, the folding plate and the wind shield are connected at an angle, and in an initial state, the folding plate extends in a vertical direction.

[0019] Optionally, the angle between the folding plate 1211 and the wind shield 121 is 150°, and in an initial state, the angle θ is 30° to 60°.

[0020] Optionally, at least one supporting member is fixedly connected to the inner side of the inner air duct plate, and the rotating shaft can be rotatably disposed through the supporting member.

[0021] Beneficial effects:

[0022] The energy storage battery cluster provided by the present invention is provided with air ducts on both sides of the battery plug box. After the external cold air enters the air duct, it enters the installation cavity through the air duct vents on the inner wind shield plate, thereby exchanging heat with the battery plug box and taking away the heat of the battery plug box. The wind shield plate provided in the air duct can block the cold air. Since the angle θ between the wind shield plate and the inner wind duct plate can be adjusted, the air volume of the air duct vents can be changed by changing the angle θ, thereby adjusting the temperature of the battery plug box, avoiding the problem of uneven temperature of the battery plug box caused by excessive air volume in the upper layer and too small air volume in the lower layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0024] Figure 1 It is an exploded structural diagram of the energy storage battery cluster provided by the present invention;

[0025] Figure 2 is a structural schematic diagram of a windshield assembly provided by the present invention;

[0026] Figure 3 is a cross-sectional view of a local structure of an air duct provided by the present invention;

[0027] Figure 4 It is a structural schematic diagram of a battery rack provided by the present invention;

[0028] Figure 5 It is a cross-sectional view of the air duct provided by the present invention.

[0029] In the figure:

[0030] 100, battery rack; 101, support plate; 102, connecting beam; 110, air duct; 111, outer air duct plate; 112, connecting portion; 113, inner air duct plate; 1131, air duct vent; 120, wind shield assembly; 121, wind shield plate; 1211, folding plate; 122, rotating shaft; 123, driving member; 124, supporting member;

[0031] 200. Battery plug-in box; 210. Plug-in box vent; 220. Cooling fan. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] See also Figures 1 to 3, this embodiment provides an energy storage battery cluster, including a battery rack 100, a plurality of battery plug-ins 200 and a control unit. The battery rack 100 has a plurality of installation cavities arranged in a vertical direction, and the plurality of battery plug-ins 200 are placed in the plurality of installation cavities in a one-to-one correspondence. The battery rack 100 includes air ducts 110 respectively arranged on both sides of the battery plug-ins 200, the air duct 110 includes an inner air duct plate 113, and the inner air duct plate 113 is provided with a plurality of groups of air duct vents 1131, the air duct vents 1131 and the installation cavities are arranged correspondingly, and the air duct 110 and the installation cavities are connected through the air duct vents 1131. A windshield assembly 120 is provided on the battery rack 100, and the windshield assembly 120 includes a windshield plate 121, and the windshield plate 121 is arranged in the air duct 110, and the extension direction of the windshield plate 121 is the depth direction of the battery rack 100 ( Figure 1 The angle between the wind shield 121 and the inner air duct plate 113 is θ The control unit is used to control the adjustment angle of the wind shield 121, thereby controlling the air volume of the air duct vent.

[0037] The energy storage battery cluster is provided with air ducts 110 on both sides of the battery plug box 200. After the external cold air enters the air duct 110, it enters the installation cavity through the air duct vents 1131 on the inner wind shield plate 113, thereby exchanging heat with the battery plug box 200 and taking away the heat of the battery plug box 200. The wind shield plate 121 provided in the air duct 110 can block the cold air. Since the angle θ between the wind shield plate 121 and the inner wind duct plate 113 can be adjusted, the air volume of the air duct vents 1131 can be changed by changing the angle θ, thereby adjusting the temperature of the battery plug box 200, avoiding the problem of uneven temperature of the battery plug box 200 caused by excessive air volume in the upper layer and excessive air volume in the lower layer.

[0038] See also Figure 1 , multiple support plates 101 are arranged at intervals along the vertical direction on the outer side of the inner air duct plate 113, and the interior of the battery rack 100 is divided into multiple installation cavities by the support plates 101, and the support plates 101 are used to support the battery plug box 200. Each installation cavity is correspondingly provided with a group of air duct vents 1131. The two side plates of the battery plug box 200 are provided with plug box vents 210, and cold air can enter the interior of the battery plug box 200 through the plug box vents 210, and then be discharged by the cooling fan 220.

[0039] Furthermore, each group of air duct vents 1131 includes multiple rows of through holes spaced apart in the vertical direction. By arranging the air duct vents 1131 in the form of multiple through holes, it is possible to avoid the structural strength of the inner air duct plate 113 being too low. The wind shield 121 is arranged between two adjacent rows of through holes or below the bottom layer of through holes, and can at least block a row of through holes located above the wind shield 121. In the present embodiment, the wind shield 121 is a rectangular flat plate structure, and in other embodiments, the wind shield 121 can also be an arc-shaped plate. It can be understood that the length of the wind shield 121 can be set according to the size of the air duct vent 1131 in the depth direction of the battery rack 100, and the width of the baffle is set according to the size of the through hole in the vertical direction, to ensure that the wind shield 121 can play a shielding role on the through hole.

[0040] Furthermore, there is a temperature detection element (not shown in the figure) on the battery box 200, and the temperature detection element is connected to the control unit signal. Optionally, the temperature detection element can be set according to the number of battery boxes 200, and one or more temperature detection elements are set on each battery box 200, or a temperature detection element is set on every other battery box 200. In other embodiments, the temperature detection element can be set on the inner side of the inner air duct plate 113 or on the outer side of the inner air duct plate 113, and the number can be set according to the use needs. Optionally, the temperature detection element can be a temperature sensor. The control unit can adjust the angle of the windshield 121 through the temperature signal obtained by the temperature detection unit, reduce the angle θ at the lower temperature part, and increase the angle θ at the higher temperature part, so as to achieve the purpose of uniform temperature of all battery boxes 200.

[0041] Furthermore, there are multiple groups of windshield components 120, and the multiple groups of windshield components 120 and the air duct vents 1131 are arranged one by one, and the angle θ between each windshield plate 121 and the inner air duct plate 113 can be adjusted individually according to the measurement result of the temperature detection element. Exemplarily, six installation cavities are arranged in a battery rack 100, which can accommodate six battery plug boxes 200, each battery plug box 200 is provided with a temperature detection element, and each battery plug box 200 is provided with a windshield component 120 on both sides, each windshield component 120 corresponds to two rows of air duct vents 1131, and is arranged below the next row of air duct vents 1131. In other embodiments, the number of installation cavities and battery plug boxes 200 is set according to the needs of use, the number of windshield components 120 can be the same as or different from the number of battery plug boxes 200, and the air volume entering the plug box vent 210 can be adjusted.

[0042] Furthermore, the air duct 110 further includes two connecting parts 112 respectively connected to both sides of the inner air duct plate 113, and the wind shield assembly 120 further includes a driving member 123 connected to the control unit signal, and the fixed end of the driving member 123 is arranged on the connecting part 112, and the driving member 123 is used to drive the wind shield plate 121 to rotate. Optionally, the driving member 123 can be a motor, which can be connected to the control unit by wireless or wired connection.

[0043] Further, see Figure 4 The air duct 110 also includes an outer air duct plate 111 spaced apart from the inner air duct plate 113, and the two sides of the outer air duct plate 111 extending in the vertical direction are respectively connected to the two connecting parts 112. In this embodiment, the connecting part 112 is a frame-shaped structure, which is sandwiched between the outer air duct plate 111 and the inner air duct plate 113, and can provide good stability. Of course, in other embodiments, the connecting part 112 can also be plate-shaped. In order to further improve the structural strength and stability of the battery rack 100, a frame-shaped connecting beam 102 is provided above and below the two inner air duct plates 113.

[0044] Further, see Figures 2 to 4 , a rotating shaft 122 is connected to the side of the windshield 121, and a driving member 123 is arranged on the outside of the connecting portion 112. One end of the rotating shaft 122 can rotate to pass through the connecting portion 112 and be connected to the output end of the driving member 123. When the control unit controls the driving member 123 to start, the rotating shaft 122 will drive the windshield 121 to rotate; when the control unit controls the driving member 123 to stop, the rotating shaft 122 stops rotating, and thus the windshield 121 stops rotating. In other embodiments, the position where the rotating shaft 122 and the windshield 121 are connected is not limited to the side of the windshield 121, as long as rotating the rotating shaft 122 can rotate the windshield 121. Optionally, the front end of the rotating shaft 122 extends out of the connecting portion 112.

[0045] Further, see Figure 3 , the angle between the folding plate 1211 and the wind shield 121 is 150°, and in the initial state, the angle θ between the wind shield 121 and the inner air duct plate 113 is 30° to 60°, and illustratively, the angle θ can be 30°, 45° or 60°, etc. It can be understood that when the angle θ decreases, the amount of air entering the air duct vent 1131 will decrease, and when the angle θ increases, the amount of air entering the air duct vent 1131 will increase. Therefore, when the temperature of the upper battery plug box 200 is higher than that of the lower battery plug box 200, the angle θ between the wind shield 121 at the upper battery plug box 200 and the inner air duct plate 113 can be changed to increase; when the temperature of the upper battery plug box 200 is lower than that of the lower battery plug box 200, the angle θ between the wind shield 121 at the upper battery plug box 200 and the inner air duct plate 113 can be changed to decrease, so as to achieve the purpose of balancing the temperature.

[0046] Furthermore, a folding plate 1211 is provided on the side of the windshield 121 away from the rotating shaft 122, and the folding plate 1211 is connected to the windshield 121 at an angle. In the initial state, the folding plate 1211 extends in the vertical direction. The folding plate 1211 can block the airflow, thereby effectively shielding the air duct vent 1131.

[0047] Further, see Figure 5 , a support member 124 is fixedly connected in the air duct 110, and the rotating shaft 122 can be rotatably passed through the support member 124. The support member 124 supports the rotating shaft 122 to ensure its smooth rotation. In the present embodiment, two support members 124 are provided, both of which are plate-shaped structures. The two support members 124 are arranged at intervals and are respectively located at the two ends of the wind shield 121. In other embodiments, the support member 124 can be a hollow structure to reduce the obstruction to the airflow. The number of the support members 124 can be set as needed, and is not specifically limited here. Optionally, the support member 124 is welded to the inner wall of the air duct 110. In the present embodiment, the support member 124 is fixed on the inner wind shield 121. In other embodiments, the support member 124 can also be fixed on the outer wind shield 121.

[0048] The working principle of the energy storage battery cluster provided in this embodiment is as follows:

[0049] When the air conditioner is turned on and cold air is blown in, a temperature difference is easily generated because of the height difference between the top and the bottom. The control unit receives a signal from the temperature detection unit. If the top is lower than the bottom, the control unit controls the driver 123 to start and drives the windshield 121 to rotate, so that the angle θ is reduced, thereby reducing the amount of air entering the plug-in box vent 210 from the top and reducing the temperature difference between the top and the bottom. Similarly, when the temperature of other battery plug-ins 200 is low, the driver 123 controls the angle θ between the windshield 121 and the inner air duct plate 113 at the corresponding position to decrease. When the temperature of other plug-ins is high, the driver 123 controls the angle θ between the windshield 121 and the inner air duct plate 113 at the corresponding position to increase, so that the temperature of the entire battery cluster is balanced.

[0050] The configuration of the control unit in this embodiment is a mature technical means in the art and will not be explained here.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An energy storage battery cluster, characterized in that: It comprises a battery rack (100), a plurality of battery plug boxes (200) and a control unit: The battery rack (100) has a plurality of installation cavities arranged along a vertical direction, and the plurality of battery plug boxes (200) are placed in the plurality of installation cavities in a one-to-one correspondence; The battery rack (100) comprises air ducts (110) respectively arranged on both sides of the battery plug box (200), the air duct (110) comprises an inner air duct plate (113), a plurality of groups of air duct vents (1131) are arranged on the inner air duct plate (113), the air duct vents (1131) and the installation cavity are arranged correspondingly, and the air duct (110) and the installation cavity are connected through the air duct vents (1131); The battery rack (100) is provided with a windshield assembly (120), the windshield assembly (120) comprising a windshield plate (121), the windshield plate (121) being arranged in the air duct (110), the extension direction of the windshield plate (121) being the depth direction of the battery rack (100), and the angle θ between the windshield plate (121) and the inner air duct plate (113) being adjustable; The control unit is used to control the adjustment angle of the wind shield (121), thereby controlling the air output of the air duct vent (1131).

2. The energy storage battery cluster according to claim 1, characterized in that: Each group of the air duct vents (1131) comprises a plurality of rows of through holes spaced apart in the vertical direction, and the wind shield (121) is arranged between two adjacent rows of through holes or below the bottom layer of through holes, and is capable of blocking at least one row of through holes located above the wind shield (121).

3. The energy storage battery cluster according to claim 1, characterized in that: The battery plug box (200) is provided with a temperature detection element, and the temperature detection element is signal-connected to the control unit.

4. The energy storage battery cluster according to claim 3, characterized in that: The wind shield assembly (120) is provided in multiple groups, and the multiple groups of wind shield assemblies (120) and the air duct vents (1131) are provided in one-to-one correspondence, and the angle θ between each wind shield plate (121) and the inner air duct plate (113) can be adjusted individually according to the measurement result of the temperature detection element.

5. The energy storage battery cluster according to claim 1, characterized in that: The air duct (110) further comprises two connecting parts (112) respectively connected to the two sides of the inner air duct plate (113); the wind shield assembly (120) further comprises a driving member (123) connected to the control unit signal; a fixed end of the driving member (123) is arranged on the connecting part (112); the driving member (123) is used to drive the wind shield plate (121) to rotate.

6. The energy storage battery cluster according to claim 5, characterized in that: The air duct (110) further comprises an outer air duct plate (111) spaced apart from the inner air duct plate (113), and two side edges of the outer air duct plate (111) extending in the vertical direction are respectively connected to the two connecting portions (112).

7. The energy storage battery cluster according to claim 6, characterized in that: A rotating shaft (122) is connected to the side of the windshield (121), the driving member is arranged on the outside of the connecting portion (112), and one end of the rotating shaft (122) can be rotated to pass through the connecting portion (112) and connected to the output end of the driving member (123).

8. The energy storage battery cluster according to claim 7, characterized in that: A folding plate (1211) is provided on the side of the wind shield (121) away from the rotating shaft (122); the folding plate (1211) and the wind shield (121) are connected at an angle; in an initial state, the folding plate (1211) extends in a vertical direction.

9. The energy storage battery cluster according to claim 8, characterized in that: The angle between the folding plate (1211) and the wind shield (121) is 150°, and in the initial state, the angle θ has a value range of 30° to 60°.

10. The energy storage battery cluster according to claim 7, characterized in that: At least one support member (124) is fixedly connected to the inner side of the inner air duct plate (113), and the rotating shaft (122) is rotatably disposed through the support member (124).

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