Battery cluster

Abstract

The utility model relates to the technical field of battery clusters and discloses a battery cluster, which is characterized in that an accommodating cavity is arranged in a battery rack, and a fixing hole is arranged on one side of the battery rack; the support frame is arranged in the accommodating cavity; the supporting frames are sequentially arranged in the first direction. A first air duct is formed between two adjacent groups of support frames, and two sides of at least two groups of support frames in the first direction and the side wall of the battery rack form second air ducts respectively; each group of support frames sequentially supports at least two battery plug-in boxes along a second direction; the battery plug-in box is connected to the accommodating cavity through the fixing hole, an air inlet is formed in the side part in the second direction, and the air inlet is communicated with the corresponding first air duct or the second air duct; an exhaust fan is arranged at the air outlet of each battery plug-in box; the wind scooper is arranged at the top of the battery rack, the wind scooper and the battery rack define a wind guide cavity, and the wind guide cavity is communicated with the first air duct and the second air duct; the refrigeration equipment is connected to the battery rack, a cold air outlet of the refrigeration equipment is communicated with the wind scooper, and the battery cluster disclosed by the utility model is uniform in cooling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of battery clusters, in particular to battery clusters. Background Art

[0002] In recent years, with the rapid development of the new energy industry, lithium batteries have been more and more widely used in the energy storage industry, and the application scenarios have also begun to diversify. The battery clusters of lithium batteries are currently developing and progressing around the tenets of reducing costs, reducing floor space, increasing energy density, and facilitating installation and maintenance. After the energy density of the energy storage battery clusters is increased, the requirements for the heat dissipation performance of the battery clusters are also correspondingly increased.

[0003] In related battery clusters, the refrigeration equipment cools multiple battery clusters simultaneously through air ducts. The air duct lengths of some battery clusters are longer, while those of some battery clusters are shorter. There is a loss of the refrigeration capacity of the refrigeration equipment during the transmission through the air ducts, resulting in a lower cooling effect for the battery clusters with longer air duct lengths and a large difference in cooling effects between the battery clusters. Summary of the Utility Model

[0004] In view of this, the utility model provides a battery cluster to solve the problem of a large difference in cooling effects between battery clusters.

[0005] The utility model provides a battery cluster, including:

[0006] A battery rack with an accommodation cavity inside and a fixing hole communicated with the accommodation cavity on one side;

[0007] A support frame arranged in the accommodation cavity; the support frame includes at least two groups arranged in sequence along a first direction; a first air duct is formed between adjacent two groups of the support frames, and second air ducts are respectively formed between the two sides of at least two groups of the support frames in the first direction and the side walls of the battery rack;

[0008] A battery insertion box detachably connected to the accommodation cavity through the fixing hole, and each group of the support frames supports at least two battery insertion boxes in sequence along a second direction; an air inlet is arranged on the side part of the battery insertion box in the second direction, and the air inlet is communicated with the corresponding first air duct or the second air duct; an exhaust fan is arranged at the air outlet of each battery insertion box;

[0009] An air guide cover arranged on the top of the battery rack and enclosing an air guide cavity with the battery rack, and the air guide cavity is communicated with both the first air duct and the second air duct;

[0010] A refrigeration device connected to the battery rack, and the cold air outlet of the refrigeration device is communicated with the air guide cover through an air guide channel;

[0011] Wherein, the first direction is perpendicular to the second direction.

[0012] Beneficial effects: A refrigeration device is connected to the battery rack. The cold air outlet of the refrigeration device is communicated with the air guide cover, and is communicated with the first air duct and the second air duct through the air guide cavity. Then, the cold air is guided to the air inlet of the battery cassette through the air guide cover, the first air duct and the second air duct, so as to cool and dissipate heat from the battery cells in the battery cassette in cooperation with the exhaust fan at the air outlet of the battery cassette; Each battery cluster is equipped with its own refrigeration device to achieve independent thermal management, so that the cooling effect difference between battery clusters is small; And because the refrigeration device is connected to the battery rack, the air duct travel between the cold air outlet and the battery cassette is shortened, which can not only evenly cool and dissipate heat through the refrigeration device to obtain a good cooling effect, but also reduce the power of the refrigeration device.

[0013] In an optional embodiment, the refrigeration device is connected to the door body of the battery rack, the cold air outlet is communicated with the air guide cover through an air guide channel, and an elastic seal is provided between the air guide channel and the cold air outlet.

[0014] Beneficial effects: The refrigeration device is connected to the door body of the battery rack, which can further shorten the air duct travel between the cold air outlet and the battery cassette. An elastic seal is provided between the air guide channel and the cold air outlet, which can not only prevent cold air from overflowing, but also ensure the connection stability.

[0015] In an optional embodiment, the air guide cover is provided with a cold air inlet, the cold air outlet is communicated with the cold air inlet through an air guide channel, the cold air inlet is arranged in front of the air guide cover and located at the middle position of the air guide cover, and the cold air inlet is arranged opposite to the cold air outlet.

[0016] In an optional embodiment, the air guide channel includes:

[0017] A contraction section, one end of which is communicated with the cold air outlet, and the cross-sectional area of the contraction section gradually decreases in a direction away from the cold air outlet;

[0018] A diffusion section, one end of which is communicated with the other end of the contraction section, and the other end is communicated with the air guide cover. The width of the diffusion section gradually increases in a direction close to the air guide cover, and the width of the diffusion section is the width in the first direction.

[0019] In an optional embodiment, each group of the support frames includes two columns arranged at intervals in the first direction, and each column includes at least two support plates arranged at intervals in the second direction. Two corresponding support plates in the second direction in each group of the support frames are respectively used to support both sides of the bottom of the battery cassette; The support plate and the battery cassette enclose the first air duct, and the support plate, the battery cassette and the side wall of the battery rack enclose the second air duct.

[0020] In an alternative embodiment, the support frame further includes a limiting structure, and the limiting structure is connected to the rear end of the support plate.

[0021] In an alternative embodiment, the limiting structure includes a first limiting portion, one end of the first limiting portion is connected to the rear end of the support plate, and the other end extends in the second direction away from the support plate.

[0022] In an alternative embodiment, the first limiting portion is located above the support plate; the limiting structure further includes a second limiting portion, one end of the second limiting portion is connected to the end of the first limiting portion away from the support plate, and the other end extends forward, and the second limiting portion, the first limiting portion and the support plate enclose a limiting groove; one side of the bottom of the battery insertion box is limitedly arranged in the limiting groove.

[0023] In an alternative embodiment, the width of the second limiting portion in the first direction is smaller than that of the first limiting portion, and the distance between the corresponding two first limiting portions in each group of support frames is smaller than the distance between the corresponding two second limiting portions; both sides of the bottom of the battery insertion box in the first direction are respectively convexly provided with matching portions, and the matching portions are limitedly arranged in the limiting groove.

[0024] In an alternative embodiment, the first limiting portion and the second limiting portion are flanges formed at the rear end of the support plate. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is the front view of a battery cluster according to an embodiment of the present invention;

[0027] Figure 2 It is the side view of a battery cluster according to an embodiment of the present invention;

[0028] Figure 3 It is Figure 1 the sectional view taken along the line A-A in

[0029] Figure 4 It is the front view of a battery cluster (hiding the refrigeration equipment) according to an embodiment of the present invention;

[0030] Figure 5 Structural schematic diagram of a support plate from the first perspective according to an embodiment of the present utility model;

[0031] Figure 6 Structural schematic diagram of a support plate from the second perspective according to an embodiment of the present utility model;

[0032] Figure 7 Front view of a battery insertion box according to an embodiment of the present utility model;

[0033] Figure 8 Top view of a battery insertion box according to an embodiment of the present utility model;

[0034] Figure 9 Side view of a battery insertion box according to an embodiment of the present utility model.

[0035] Explanation of reference numerals:

[0036] 1, battery rack; 21, support plate; 22, first limiting portion; 23, second limiting portion; 3, first air duct; 4, second air duct; 5, battery insertion box; 51, battery cell; 6, exhaust fan; 7, air guide cover; 8, refrigeration equipment; 9, air guide channel; 91, contraction section; 92, diffusion section. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0038] The following combines Figures 1 to 9 to describe the embodiments of the present utility model.

[0039] According to an embodiment of the present invention, a battery cluster is provided, which includes a battery rack 1, a support frame, a battery insertion box 5, a wind guide cover 7 and a refrigeration device 8; an accommodation cavity is provided inside the battery rack 1, and a fixing hole communicating with the accommodation cavity is provided on one side; the support frame is arranged in the accommodation cavity; the support frame includes at least two groups arranged in sequence along a first direction; a first air duct 3 is formed between adjacent two groups of support frames, and second air ducts 4 are respectively formed between the side walls of the battery rack 1 and at least two groups of support frames on both sides in the first direction; each group of support frames sequentially supports at least two battery insertion boxes 5 along a second direction; the battery insertion box 5 is detachably connected to the accommodation cavity through the fixing hole, and an air inlet is provided on the side part in the second direction, and the air inlet communicates with the corresponding first air duct 3 or second air duct 4; an exhaust fan 6 is provided at the air outlet of each battery insertion box 5; the wind guide cover 7 is arranged on the top of the battery rack 1 and encloses a wind guide cavity with the battery rack 1, and the wind guide cavity communicates with both the first air duct 3 and the second air duct 4; the refrigeration device 8 is connected to the battery rack 1, and the cold air outlet of the refrigeration device 8 communicates with the wind guide cover 7 through a wind guide channel 9; wherein, the first direction is perpendicular to the second direction.

[0040] A refrigeration device 8 is connected to the battery rack 1, the cold air outlet of the refrigeration device 8 communicates with the wind guide cover 7, and is communicated with the first air duct 3 and the second air duct 4 through the wind guide cavity. Then, the cold air is guided to the air inlet of the battery insertion box 5 through the wind guide cover 7, the first air duct 3 and the second air duct 4, so as to cool and dissipate the heat of the battery cells 51 in the battery insertion box 5 in cooperation with the exhaust fan 6 at the air outlet of the battery insertion box 5; each battery cluster is equipped with its own refrigeration device 8 to achieve independent thermal management, so that the cooling effect difference between battery clusters is small; and because the refrigeration device 8 is connected to the battery rack 1, the air duct travel between the cold air outlet and the battery insertion box 5 is shortened, which can not only cool and dissipate heat evenly through the refrigeration device 8 to obtain a good cooling effect, but also reduce the power of the refrigeration device 8.

[0041] In one embodiment, the refrigeration device 8 is connected to the door body of the battery rack 1, the cold air outlet communicates with the wind guide cover 7 through the wind guide channel 9, and an elastic seal is provided between the wind guide channel 9 and the cold air outlet.

[0042] The refrigeration device 8 is connected to the door body of the battery rack 1, which can further shorten the air duct travel between the cold air outlet and the battery insertion box 5. An elastic seal is provided between the wind guide channel 9 and the cold air outlet, which can not only prevent cold air from overflowing, but also ensure the connection stability.

[0043] In one embodiment, a cold air inlet is provided on the wind guide cover 7, the cold air outlet communicates with the cold air inlet through the wind guide channel 9, the cold air inlet is arranged in front of the wind guide cover 7 and is located at the middle position of the wind guide cover 7, and the cold air inlet is arranged opposite to the cold air outlet.

[0044] The cold air inlet is arranged in front of the air guide cover 7, which can shorten the air duct journey between it and the refrigeration device 8 connected to the door body. It is located at the middle position of the air guide cover 7 and can have a relatively uniform air inlet effect on the first air duct 3 and the second air duct 4.

[0045] In one embodiment, the air guide channel 9 includes a contraction section 91 and a diffusion section 92; one end of the contraction section 91 is communicated with the cold air outlet, and the cross-sectional area of the contraction section 91 gradually decreases in the direction away from the cold air outlet; one end of the diffusion section 92 is communicated with the other end of the contraction section 91, and the other end is communicated with the air guide cover 7. The width of the diffusion section 92 gradually increases in the direction close to the air guide cover 7, and the width of the diffusion section 92 is the width in the first direction.

[0046] The contraction section 91 can increase the air outlet pressure of the cold air and enhance the air outlet speed, so that the cold air can diffuse better at the diffusion section 92 and improve the uniformity of air inlet; the diffusion section 92 can increase the air inlet area of the air guide cover 7 and make the air inlet at the air guide cover 7 more uniform.

[0047] In one embodiment, each group of support frames includes two columns arranged at intervals in the first direction, and each column includes at least two support plates 21 arranged at intervals in the second direction. The two support plates 21 corresponding in the second direction in each group of support frames are respectively used to support both sides of the bottom of the battery cassette 5; the support plate 21 and the battery cassette 5 enclose the first air duct 3, and the support plate 21, the battery cassette 5 and the side wall of the battery rack 1 enclose the second air duct 4.

[0048] The support plate 21 and the battery cassette 5 enclose the first air duct 3, and the support plate 21, the battery cassette 5 and the side wall of the battery rack 1 enclose the second air duct 4, which simplifies the structures such as air guide partitions and also reduces the production costs of the battery rack 1 and the support frames, indirectly controlling the cost of the overall battery cluster.

[0049] In one embodiment, the support frame further includes a limiting structure, and the limiting structure is connected to the rear end of the support plate 21.

[0050] The limiting structure can limit the rear end of the battery cassette 5, eliminating the need for manual entry into the battery rack 1 for installation, and can also prevent the battery cassette 5 from moving during transportation, enhancing the transportation safety performance of the battery cassette 5. When the battery cassette 5 is being repaired, since the limiting structure is arranged at the rear end of the support plate 21, it will not affect the direct extraction of the battery cassette 5, making both installation and repair convenient.

[0051] In one embodiment, the limiting structure includes a first limiting portion 22. One end of the first limiting portion 22 is connected to the rear end of the support plate 21, and the other end extends in the second direction away from the support plate 21.

[0052] The first limiting part 22 limits the battery insertion box 5 in the front - rear direction, and limits the battery insertion box 5 inside the battery rack 1.

[0053] In one embodiment, the first limiting part 22 is located above the support plate 21; the limiting structure further includes a second limiting part 23. One end of the second limiting part 23 is connected to the end of the first limiting part 22 away from the support plate 21, and the other end extends forward. The second limiting part 23, the first limiting part 22 and the support plate 21 enclose a limiting groove; one side of the bottom of the battery insertion box 5 is limitedly arranged in the limiting groove.

[0054] The second limiting part 23 limits the battery insertion box 5 in the second direction, which can prevent the battery insertion box 5 from bouncing up and down during transportation, and enhance the transportation safety performance of the battery insertion box 5.

[0055] In one embodiment, the width of the second limiting part 23 in the first direction is smaller than that of the first limiting part 22, and the distance between the corresponding two first limiting parts 22 in each group of support frames is smaller than the distance between the corresponding two second limiting parts 23; both sides of the bottom of the battery insertion box 5 in the first direction are convexly provided with matching parts, and the matching parts are limitedly arranged in the limiting groove.

[0056] The setting of the matching parts can also space between the support plate 21 and the main body part of the battery insertion box 5 through the second limiting part 23 and the matching parts, so as to increase the width of the first air duct 3 and the second air duct 4 in the first direction.

[0057] In one embodiment, the first limiting part 22 and the second limiting part 23 are flanges formed at the rear end of the support plate 21.

[0058] The first limiting part 22 and the second limiting part 23 are integrally formed on the support plate 21, which simplifies the forming steps.

[0059] Specifically, the battery rack 1 includes a top wall, a bottom wall, two side walls, a door body and a plurality of columns. The two side walls are arranged at intervals in the first direction. The two ends of the top wall are respectively connected to the tops of the two side walls, and the two ends of the bottom wall are respectively connected to the bottoms of the two side walls; one side of the door body is hinged to one side wall, and the other side is detachably connected to the other side wall; there are two groups of columns arranged opposite to each other in the front - rear direction, which are respectively connected to the front and rear sides of the battery rack 1; each group of columns is provided with a plurality of columns at intervals in the first direction, the upper and lower ends of the columns are respectively connected to the top wall and the bottom wall, and the support frame is connected to the column, preferably welded to the column.

[0060] The energy storage room provided with a battery cluster is also provided with an air extraction system of a refrigeration device 8, which can discharge heat outdoors. The refrigeration device 8 can be an air conditioner.

[0061] The cold air of the refrigeration device 8 successively passes through the air guiding channel 9, the air guiding cover 7, the first air duct 3 or the second air duct 4, and the air inlet, enters the interior of the battery insertion box 5, dissipates heat from the battery cells 51 inside the battery insertion box 5, is then extracted by the extraction fan 6 at the air outlet of the battery insertion box 5, and is discharged outdoors by the extraction system.

[0062] Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A battery cluster, characterized in that: include: A battery rack (1) having a receiving cavity inside and a fixing hole communicating with the receiving cavity on one side; A support frame is arranged in the accommodating cavity; the support frame comprises at least two groups arranged in sequence along a first direction; a first air duct (3) is formed between two adjacent groups of the support frames, and at least two groups of the support frames respectively form a second air duct (4) with the side walls of the battery frame (1) on both sides in the first direction; A battery plug box (5) is detachably connected to the accommodating cavity through the fixing hole, and each group of the support frames sequentially supports at least two battery plug boxes (5) along the second direction; an air inlet is provided on the side of the battery plug box (5) in the second direction, and the air inlet is connected to the corresponding first air duct (3) or the second air duct (4); an exhaust fan (6) is provided at the air outlet of each battery plug box (5); An air guide cover (7) is arranged on the top of the battery rack (1) and forms an air guide cavity with the battery rack (1), wherein the air guide cavity is connected to both the first air duct (3) and the second air duct (4); A refrigeration device (8) is connected to the battery rack (1), and a cold air outlet of the refrigeration device (8) is in communication with the air guide cover (7); The first direction is perpendicular to the second direction.

2. The battery cluster according to claim 1, characterized in that: The refrigeration device (8) is connected to the door body of the battery rack (1); the cold air outlet is connected to the air guide cover (7) via an air guide channel (9); and an elastic sealing member is provided between the air guide channel (9) and the cold air outlet.

3. The battery cluster according to claim 2, characterized in that: The air guide cover (7) is provided with a cold air inlet, and the cold air outlet is connected with the cold air inlet through an air guide channel (9). The cold air inlet is arranged in front of the air guide cover (7) and is located in the middle of the air guide cover (7). The cold air inlet and the cold air outlet are arranged opposite to each other.

4. The battery cluster according to claim 2, characterized in that: The air guiding channel (9) comprises: A contraction section (91), one end of which is in communication with the cold air outlet, and a flow cross section of the contraction section (91) gradually decreases in a direction away from the cold air outlet; A diffusion section (92), one end of which is connected to the other end of the contraction section (91), and the other end of which is connected to the air guide cover (7). The width of the diffusion section (92) gradually increases in a direction approaching the air guide cover (7). The width of the diffusion section (92) is the width in the first direction.

5. The battery cluster according to any one of claims 1 to 4, characterized in that: Each group of the support frames comprises two columns spaced apart along the first direction, each column comprises at least two support plates (21) spaced apart along the second direction, and the two corresponding support plates (21) in each group of the support frames in the second direction are respectively used to support two sides of the bottom of the battery plug box (5); the support plates (21) and the battery plug box (5) form the first air duct (3), and the support plates (21), the battery plug box (5) and the side walls of the battery frame (1) form the second air duct (4).

6. The battery cluster according to claim 5, characterized in that: The support frame also includes a limiting structure, which is connected to the rear end of the support plate (21).

7. The battery cluster according to claim 6, characterized in that: The limiting structure comprises a first limiting portion (22), one end of the first limiting portion (22) is connected to the rear end of the support plate (21), and the other end extends along the second direction in a direction away from the support plate (21).

8. The battery cluster according to claim 7, characterized in that: The first limiting portion (22) is located above the support plate (21); the limiting structure also includes a second limiting portion (23), one end of the second limiting portion (23) is connected to one end of the first limiting portion (22) away from the support plate (21), and the other end extends forward, the second limiting portion (23), the first limiting portion (22) and the support plate (21) form a limiting groove; one side of the bottom of the battery box (5) is limitedly arranged in the limiting groove.

9. The battery cluster according to claim 8, characterized in that: The width of the second limiting portion (23) in the first direction is smaller than that of the first limiting portion (22); the distance between two corresponding first limiting portions (22) in each group of the support frames is smaller than the distance between two corresponding second limiting portions (23); the bottom of the battery plug box (5) is provided with mating portions protruding from both sides in the first direction, and the mating portions are arranged to be limited in the limiting grooves.

10. The battery cluster according to claim 8, characterized in that: The first limiting portion (22) and the second limiting portion (23) are flanges formed at the rear end of the support plate (21).

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