Air-cooled temperature-controlled energy storage battery pack

Abstract

The utility model provides an air cooling temperature control energy storage battery pack which comprises a box body and a main heat dissipation plate arranged at the bottom of the box body, a closed cavity is formed by the main heat dissipation plate and the bottom of the box body, a battery pack is installed on the main heat dissipation plate, and a battery cell air guide heat dissipation plate is installed between two battery cells of the battery pack. And the ventilating duct of the battery cell air guide radiating plate is communicated with the cavity at the bottom of the main radiating plate. According to the energy storage battery pack provided by the utility model, the heat dissipation area of the battery cell is increased, and the heat dissipation efficiency is improved, so that the service life of the battery cell is prolonged. According to the utility model, the ventilation path is simple, and ventilation ducts on two sides of the battery pack are removed, so that the installation density is improved, the overall volume is reduced, and the production cost is reduced. The panel is detachable, and later operation and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage battery module heat dissipation systems, in particular to an energy storage battery pack with air cooling and temperature control. Background Art

[0002] The energy storage battery pack is a key component of the battery energy storage system. In the existing square energy storage battery pack temperature management technology, the uneven distribution of the heat dissipation air duct of the battery cell leads to uneven heat dissipation on all sides of the battery cell, large temperature difference between the battery cells, low heat dissipation efficiency, and thus reduces the charging and discharging efficiency and service life of the energy storage battery module. In addition, the structural dimensions of the components of the existing air-cooled battery pack fixed module are large, the space occupied by the air duct is also large, and the complex structure leads to high component manufacturing costs, which is not easy to disassemble and maintain, thus affecting the promotion and application of the energy storage system. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an air-cooled temperature-controlled energy storage battery pack, and its technical solution is as follows: an air-cooled temperature-controlled energy storage battery pack, comprising an upper panel, a battery pack, a main heat sink, a box, a front panel, a rear cover, and a cell air-conducting heat sink. The battery pack is composed of cells. The upper panel, the battery pack, the main heat sink and the box are connected in sequence from top to bottom. The front panel and the rear cover are installed at the openings at both ends of the box. It is characterized in that: the cell is installed between two cell air-conducting heat sinks, and the cell air-conducting heat sink is a concave-convex tile type, and the raised flat part fits tightly with the cell.

[0004] The upper panel is composed of an upper cover, an insulating cover plate, and a wiring harness plate connected in sequence from top to bottom.

[0005] The wiring harness board is provided with wiring harness board ventilation holes corresponding to the gaps between the battery cells; the insulating cover plate is provided with insulating ventilation holes; the upper cover is provided with upper cover ventilation holes; and the rear cover is provided with rear cover ventilation openings.

[0006] The main heat sink is provided with ventilation holes at the position corresponding to the cell air guide heat sink. The cell air guide heat sink is inserted into the ventilation holes of the main heat sink. Limiting plates are provided at both ends of the main heat sink. End plates are installed at both ends of the battery pack on the inner side of the limiting plates, and binding straps are installed on the two end plates.

[0007] The gap between the main heat sink and the bottom of the box body forms a main air outlet channel closed on both sides.

[0008] The front panel is provided with a handle, a fan vent, a communication port, and is installed with a battery pack positive and negative electrode mounting plate and a battery pack electrode interface, and a BMU control module is installed inside.

[0009] An air guide cover is sealed and connected to the inner side of the front panel at a position corresponding to the fan ventilation hole, and a cavity is formed between the air guide cover and the front panel; a fan is installed on the front panel, and the fan is located in the cavity.

[0010] The positive and negative electrode mounting plates, the air guide cover and the fan of the battery pack are detachably mounted on the front panel.

[0011] Battery pack fixing baffles are arranged on both sides of the box body to fix the end plates.

[0012] A heat-conducting medium is filled between the raised plane portion of the battery core air-conducting and heat-dissipating plate and the battery core.

[0013] Compared with the prior art, the advantages are as follows: (1) The heat dissipation area of ​​the battery cell is increased. The two large surfaces and the bottom surface of the battery cell can dissipate heat through the heat dissipation duct made of metal materials such as aluminum or copper with good thermal conductivity, and the heat dissipation efficiency is high. (2) The heat dissipation duct has a short path, so the heat dissipation speed is fast. Further, the energy storage density can be increased by reducing the space occupied by the heat dissipation system, thereby reducing the manufacturing cost. (3) The positive and negative electrode mounting plates of the panel battery pack and the fan and controller mounting plates can be separated to facilitate later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional assembly diagram of the components of the air-cooled battery pack of the utility model;

[0015] Figure 2 This is the layout diagram of the heat dissipation duct of the utility model;

[0016] Figure 3 This is a diagram showing the components of the main heat dissipation system of the utility model;

[0017] In the figure: 1. Ventilation holes on the upper cover; 2. Upper cover; 3. Ventilation holes on the insulating cover; 4. Insulating cover; 5. Ventilation holes on the wiring harness board; 6. Wiring harness board; 7. Battery pack; 71. Battery cell; 8. Battery pack electrode copper bar; 9. Battery pack positive and negative electrode mounting plate; 10. BMU control module; 11. End plate; 12. Main heat sink; 13. Air guide cover; 14. Front panel; 15. Handle; 16. Fan vents; 17. Communication port; 18. Fan; 19. Battery pack fixing block Plate; 20. Main heat sink mounting nut; 21. Box; 22. Cell air duct heat sink; 23. Main heat sink ventilation hole; 24. Main heat sink fixed mounting hole; 25. Battery pack binding strap; 26. Cell electrode connection row; 27. Rear cover; 28. Rear cover ventilation hole; 29. ​​Main air outlet; 30. Air inlet; 31. Air outlet; 32. Cell heat sink ventilation duct; 33. Battery pack electrode interface; 34. Main heat sink fixing nut; 35. Limit plate. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, 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, and do not indicate or imply 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 a limitation on the present invention.

[0020] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Example

[0023] like Figure 1 As shown, the air-cooled temperature-controlled energy storage battery pack of the utility model includes an upper cover 2, an insulating cover plate 4, a wiring harness plate 6, a battery pack 7, a main heat sink 12, a box body 21, a front panel 14, a rear cover plate 27, and a battery cell air-conducting heat sink 22.

[0024] The battery pack 7 is composed of a plurality of square battery cells 71 connected in series via a battery cell electrode connecting row 26 .

[0025] The upper cover 2, the insulating cover plate 4, the wiring harness plate 6, the battery pack 7, the main heat sink 12 and the box body 21 are connected in sequence from top to bottom. The front panel 14 and the rear cover plate 27 are installed at the openings at both ends of the box body 21, and the battery cell 71 is installed between the two battery cell air guide heat sinks 22.

[0026] The battery cell air-conducting heat dissipation plate 22 is in a concave-convex tile shape; the raised flat portion is fitted together with the battery cell 71, and a heat-conducting medium is filled between the raised flat portion of the battery cell air-conducting heat dissipation plate 22 and the battery cell 71, and the heat-conducting medium is a thermal conductive glue, and the concave portion forms a ventilation duct; not only does it increase the heat dissipation area of ​​the battery cell, but the thermal conductive glue also has much better thermal conductivity than air, which is more conducive to heat dissipation.

[0027] The wiring harness plate 6 is provided with wiring harness plate ventilation holes 5 corresponding to the gaps between the battery cells 71; the insulating cover plate 4 is provided with insulating ventilation holes 3; the upper cover 2 is provided with upper cover ventilation holes 1; and the rear cover plate 27 is provided with rear cover ventilation holes. The ventilation holes of the upper cover 2, the insulating cover 4, the wiring harness plate 6, and the rear cover 27 form an air inlet 30.

[0028] The front panel 14 is provided with a handle 15, a fan vent 16, a communication port 17, and is installed with a battery pack positive and negative electrode mounting plate 9 and a battery pack electrode interface 33, and a BMU control module 10 is installed inside. An air guide hood 13 is sealed and connected to the inside of the front panel 14 corresponding to the position of the fan vent 16, and the air guide hood 13 and the front panel 14 form a cavity; a fan 18 is installed on the front panel, and the fan 18 is located in the cavity. The battery pack positive and negative electrode mounting plates 9, the air guide hood 13 and the fan 18 can be detachably mounted on the front panel 14, and nuts can be used for detachable installation to facilitate later maintenance. Battery pack fixing baffles 19 are provided on both sides of the box body 21 to fix the end plate 11, thereby fixing the battery pack 7. Example

[0029] like Figure 2 As shown, the main heat sink 12 is provided with main heat sink vents 23 at the position corresponding to the cell wind guide heat sink 22, the main heat sink vents 23 form an air outlet 31, the cell wind guide heat sink 22 is inserted into the main heat sink vents 23, and the main heat sink 12 is provided with limit plates 35 at both ends; on the inner side of the limit plates 35, the battery pack 7 is installed with end plates 11 at both ends, and the two end plates 11 are installed with binding bands 25. The battery pack 7 is fixed to the N battery pack fixing plates 19 of the box 21 through the end plates 11. Example

[0030] like Figure 3 As shown, the air inlet 30, the ventilation duct formed by the concave part of the battery cell air guide heat sink 22 and the air outlet 31 constitute the battery cell heat sink ventilation channel 32 as an air inlet channel. The gap between the main heat sink 12 and the bottom of the box body 21 constitutes a main air outlet channel 29 with two sides closed. The main air outlet channel 29 is connected to the air guide cover 13 as an air outlet channel.

[0031] The main heat sink 12 is made into an M or π shape and is fixed to the bottom of the box 21 by the main heat sink mounting nut 20. The upper flat plate of the main heat sink 12 is bonded to the battery cell 71 by thermal conductive adhesive. The battery cell heat sink and the main heat sink 12 are bonded by thermal conductive adhesive, which can fully transfer the heat of the battery cell to the main heat sink 12, and the heat is drawn out by the fan 18 in the air guide cover 13 to form a circulation with the external air. Example

[0032] During use, when the temperature of the battery cell 71 rises or drops to a preset temperature, the BMU control module 10 triggers the fan 18 to start or stop, and the air in the main heat sink 12 is drawn out through the main air outlet channel 29 and the air guide cover 13, and the outside air enters the main air outlet channel 29 through the battery cell heat sink ventilation channel 32, and is drawn out by the fan 18, thereby forming forced convection, transferring the heat of the main heat sink and the battery cell heat sink to the environment, to help cool the battery cell 71. The main heat sink 12 and the battery cell air guide heat sink 22 are made of materials with good thermal conductivity such as aluminum or copper. The main heat sink 12 and the battery cell air guide heat sink 22 are bonded together by thermal conductive adhesive, which increases the heat dissipation area of ​​the battery cell 71. The utility model has the function of automatic heat dissipation and cooling, can reduce the working time of the fan, and play a role in energy saving and efficiency improvement.

Claims

1. An air-cooled temperature-controlled energy storage battery pack, comprising an upper panel, a battery pack (7), a main heat sink (12), a box (21), a front panel (14), a rear cover (27), and a cell air-conducting heat sink (22), wherein the battery pack (7) is composed of cells (71), the upper panel, the battery pack (7), the main heat sink (12), and the box (21) are connected in sequence from top to bottom, the front panel (14) and the rear cover (27) are installed at openings at both ends of the box (21), and the characteristics are: The battery cell (71) is installed between two battery cell air guide and heat dissipation plates (22); the battery cell air guide and heat dissipation plates (22) are of a concave-convex tile type, and the convex plane portion is tightly fitted to the battery cell (71).

2. The air-cooled temperature-controlled energy storage battery pack according to claim 1, characterized in that: The upper panel is composed of an upper cover (2), an insulating cover plate (4), and a wiring harness plate (6) which are connected in sequence from top to bottom.

3. The air-cooled temperature-controlled energy storage battery pack according to claim 2, characterized in that: The wiring harness plate (6) is provided with wiring harness plate ventilation holes (5) at positions corresponding to the cell air guide and heat dissipation plates (22); the insulating cover plate (4) is provided with insulating ventilation holes (3); the upper cover (2) is provided with upper cover ventilation holes (1); and the rear cover plate (27) is provided with rear cover plate ventilation openings.

4. The air-cooled temperature-controlled energy storage battery pack according to claim 1, characterized in that: The main heat sink (12) is provided with a main heat sink ventilation hole (23) at a position corresponding to the battery cell air guide heat sink (22); the battery cell air guide heat sink (22) is inserted into the main heat sink ventilation hole (23); and limiting plates (35) are provided at both ends of the main heat sink (12); and end plates (11) are installed at both ends of the battery pack (7) on the inner side of the limiting plates (35); and binding belts (25) are installed on the two end plates (11).

5. The air-cooled temperature-controlled energy storage battery pack according to claim 1, characterized in that: The gap between the main heat dissipation plate (12) and the bottom of the box body (21) forms a main air outlet channel (29) with two sides closed.

6. The air-cooled temperature-controlled energy storage battery pack according to claim 1, characterized in that: The front panel (14) is provided with a handle (15), a fan ventilation hole (16), and a communication port (17), and is installed with a battery pack positive and negative electrode mounting plate (9) and a battery pack electrode interface (33), and a BMU control module (10) is installed inside.

7. The air-cooled temperature-controlled energy storage battery pack according to claim 6, characterized in that: An air guide cover (13) is sealed and connected to the inner side of the front panel (14) at a position corresponding to the fan ventilation hole (16), and the air guide cover (13) and the front panel (14) form a cavity; A fan (18) is installed on the front panel, and the fan (18) is located in the cavity.

8. The air-cooled temperature-controlled energy storage battery pack according to claim 7, characterized in that: The battery pack positive and negative electrode mounting plates (9), the air guide cover (13) and the fan (18) are detachably mounted on the front panel (14).

9. The air-cooled temperature-controlled energy storage battery pack according to claim 4, characterized in that: Battery pack fixing baffles (19) are provided on both sides of the box body (21) to fix the end plate (11).

10. The air-cooled temperature-controlled energy storage battery pack according to claim 1, characterized in that: A heat-conducting medium is filled between the raised plane portion of the battery cell air-conducting and heat-dissipating plate (22) and the battery cell (71).

Images