Plug-in frame type battery pack

Abstract

The utility model discloses a plug-in frame type battery pack which comprises a group of battery cells arranged side by side, and main air ducts are arranged on polar column surfaces at the two ends of the battery cells and the upper and lower side surfaces of a battery; the battery cell shell is composed of a front end plate, a rear end plate, side cover plates on the left side and the right side, a top cover plate and a bottom cover plate, a battery cell mounting cavity is defined by the front end plate, the rear end plate, the side cover plates on the left side and the right side, the top cover plate and the bottom cover plate, and a group of battery cells arranged side by side are mounted in the battery cell mounting cavity; and the liquid cooling plate is fixedly arranged between the battery cell and the bottom cover plate and is used for carrying out bottom water-cooling heat dissipation on the battery cell. According to the plug-in frame type battery pack provided by the utility model, two thermal management modes of liquid cooling and air cooling are integrated, heat dissipation modes are allowed to be flexibly switched according to environments, the heat dissipation efficiency of the battery is optimized, and the service life of the battery is prolonged. And through the precisely designed protective shell, the production cost and the maintenance complexity are reduced, and the stability and the safety of the system are improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a plug-in frame type battery pack. Background Art

[0002] The battery packs currently used in the field of industrial and commercial energy storage technology can choose air cooling or liquid cooling according to the heat dissipation power. These two heat dissipation methods of battery packs have their own advantages, but also their own disadvantages, including the following shortcomings:

[0003] 1. For air-cooled battery packs, the two large or two small surfaces of the battery pack are generally used as air-cooled heat dissipation surfaces, without dissipating heat to the battery's pole surface and its busbar, resulting in excessively high temperature at the battery collection point and low average temperature inside the battery;

[0004] 2. Traditional liquid-cooled battery packs dissipate heat on the bottom of the battery or on a single side. As the capacity and volume of the battery pack increase, the temperature transmission path inside the battery cell becomes longer, and the internal temperature uniformity of the battery is poor. The higher the heat dissipation efficiency of the cold plate, the greater the internal temperature difference of the battery, which affects the battery life.

[0005] 3. The traditional air cooling and liquid cooling methods of battery packs are completely based on two different forms of battery pack structures, which in turn form a variety of battery pack shells and a variety of energy storage cabinets for integration, resulting in high management costs and high mold costs;

[0006] 4. The separate air cooling and liquid cooling thermal management methods cannot fully cope with the operating conditions. Climate changes will change the efficiency of thermal management and cannot intelligently control the thermal management of the battery pack, which reduces the actual application rate of the battery pack. Summary of the invention

[0007] In order to solve the above problems, the utility model provides a plug-in frame battery pack, which integrates liquid cooling and air cooling thermal management methods through a precise protective shell design, supports double-sided cooling of the battery and heat dissipation of the pole surface, improves cooling efficiency and temperature uniformity, effectively extends the battery life and reduces maintenance costs, and can effectively solve the shortcomings of the prior art.

[0008] The utility model is realized by the following technical scheme: a plug-in frame type battery pack, comprising a group of battery cells arranged side by side;

[0009] The battery cell housing comprises a front end plate, a rear end plate, left and right side cover plates, a top cover plate and a bottom cover plate, wherein the front end plate, the rear end plate, the left and right side cover plates, the top cover plate and the bottom cover plate surround a battery cell installation cavity, and the battery cell is installed in the battery cell installation cavity;

[0010] The liquid cooling plate is fixedly installed between the battery cell and the bottom cover plate, and is used for bottom water cooling of the battery cell;

[0011] The side cover plates are all provided with grille heat dissipation holes, and external cold air flows through the grille heat dissipation holes, passes through the pole surfaces of each battery cell, and converges into the main air duct;

[0012] The cooling fan is installed on a front panel, the front panel is installed on the outside of the front end panel, the cooling fan is arranged facing the main air duct, and the air entering the main air duct is discharged to the outside through the cooling fan.

[0013] As a preferred technical solution, the top cover plate and the bottom cover plate are both provided with spaced support fins, and cell limit platforms are protruded from the support fins on both sides of the edge, and the two sides of the cell are limited by the cell limit platforms, and the cell limit platforms are each provided with a CCS fixing groove.

[0014] As a preferred technical solution, an airflow duct is formed in the space formed between each supporting fin, and a blank area is formed in the middle of each supporting fin, and a liquid cooling limit column is arranged in the blank area;

[0015] A liquid cooling positioning groove is also provided in the middle of the supporting fin of the bottom cover plate, and the liquid cooling plate support is installed in the liquid cooling positioning groove.

[0016] As a preferred technical solution, side panel mounting holes are respectively provided on both sides of the top cover plate and the bottom cover plate. After the top cover plate is butted with the bottom cover plate and the side cover plate, they are connected and fixed with the side cover plate through the side panel mounting holes.

[0017] As a preferred technical solution, the outer sides of the top cover plate and the bottom cover plate are both provided with a pressure strip limit platform, and a pressure strip fixing groove is formed in the middle of the pressure strip limit platform. The pressure strip is installed in the pressure strip fixing groove. When the pressure strip is installed in the pressure strip fixing groove, the two sides of the pressure strip are respectively fixedly connected to the front end plate and the rear end plate.

[0018] As a preferred technical solution, the liquid cooling plate includes a plurality of harmonica tubes arranged horizontally at intervals, and a plurality of end manifolds, and any two adjacent harmonica tubes are connected in series via the end manifolds, a first water nozzle is provided on the harmonica tube at the head end, and a second water nozzle is provided on the harmonica tube at the tail end, and the first water nozzle and the second water nozzle respectively pass through the reserved holes on the front end panel and the front panel and extend to the outside.

[0019] As a preferred technical solution, the inner side surface of the side cover plate is provided with reinforcing ribs, and the grille heat dissipation holes are provided on the side cover plate.

[0020] As a preferred technical solution, the side cover plate is provided with side plate mounting holes corresponding to the top cover plate and the bottom cover plate, and the top cover plate, the bottom cover plate and the side cover plate are fixed by locking screws through the side plate mounting holes.

[0021] The beneficial effects of the utility model are as follows: the utility model provides a plug-in frame battery pack, which integrates two thermal management methods, liquid cooling and air cooling, so that the battery pack can flexibly switch the heat dissipation mode according to the needs of the environment and working conditions in actual use. This dual-mode heat dissipation system not only optimizes the heat dissipation efficiency of the battery, enhances the service life and performance of the battery, but also further enhances the overall stability of the system by improving the temperature uniformity performance of the battery;

[0022] In addition, the battery pack of the utility model reduces the complexity of production and maintenance by supporting both air cooling and liquid cooling in one protective shell, reduces production costs and spare parts inventory requirements, and the precise design of the battery protective shell, including the fixing limit device and the fixing device of the reinforcing pull bar, ensures the fixation and safety of the battery during use, and reduces the risk of damage caused by vibration or external force;

[0023] At the same time, the battery pack design of the utility model takes environmental protection and resource optimization into consideration, adopts renewable materials and efficient manufacturing processes, and meets the needs of modern industry and commerce for environmental protection and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an overall explosion diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the side cover plate of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the liquid cooling plate of the utility model;

[0029] Figure 5 is a schematic diagram of the structure of the bottom cover;

[0030] Figure 6 Schematic diagram of the top surface structure of the top cover plate;

[0031] Figure 7 This is the internal airflow direction diagram of the utility model;

[0032] Description of reference numerals:

[0033] 1. Battery cell; 2. Pressure strip; 3. Rear end panel; 4. Front end panel; 5. Front panel; 6. Side cover; 7. Top cover; 8. Bottom cover; 9. Liquid cooling plate; 10. Grille heat dissipation holes; 11. Reinforcement ribs; 12. Side panel mounting holes; 13. Harmonica pipe; 14. End manifold; 15. First water nozzle; 16. Second water nozzle; 17. Side panel mounting holes; 18. CCS fixing slot; 19. Battery cell limit platform; 20. Liquid cooling positioning slot; 21. Liquid cooling positioning column; 22. Support fins; 23. Pressure strip limit platform; 24. Pressure strip fixing slot; 25. Cooling fan. DETAILED DESCRIPTION

[0034] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0035] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0036] like Figure 1 As shown, a plug-in frame battery pack of the utility model includes a group of battery cells arranged side by side.

[0037] It also includes a battery cell 1 shell, including a front end plate 4, a rear end plate 3, left and right side cover plates 6, a top cover plate 7 and a bottom cover plate 8, wherein the front end plate 4, the rear end plate 3, the left and right side cover plates 6, the top cover plate 7 and the bottom cover plate 8 surround a battery cell installation cavity, and the battery cell group 1 is installed in the battery cell installation cavity;

[0038] like Figure 1 and Figure 2 As shown, it also includes a liquid cooling plate 9, which is fixedly installed between the battery cell 1 and the bottom cover plate 8, and is used for bottom water cooling and heat dissipation of more than one group of battery cells 1;

[0039] The side cover plates 6 are all provided with grille heat dissipation holes 10, and the external cold air flows through the grille heat dissipation holes 10, passes through the pole surface of each battery cell 1, and is merged into the main air duct;

[0040] It also includes a cooling fan 25 installed on a front panel 5, and the front panel 5 is installed on the outside of the front end panel 4. The cooling fan 25 is arranged opposite to the main air duct. The air entering the main air duct is discharged to the outside through the cooling fan 25. When the cooling fan 25 is turned on, the airflow in the main air duct is drawn out to the outside.

[0041] Among them, Figure 5 and Figure 6 As shown, the top cover plate 7 and the bottom cover plate 8 are both provided with spaced apart support fins 22, which are mainly used to support the battery cell 1 and the liquid cooling plate 9, and the support fins 22 on both sides of the edge are provided with raised battery cell 1 limit platforms, which limit both sides of the battery cell 1, and the battery cell 1 limit platforms are provided with CCS fixing grooves 18.

[0042] Among them, an air duct is formed in the space formed between each supporting fin 22, and the bottom is hollowed out for air flow to achieve better heat dissipation. A blank area is formed in the middle of each supporting fin 22, and a liquid cooling positioning column 21 is arranged in the blank area. The positioning column is circular and does not increase the flow resistance and direction of the fluid in the air cooling cavity. The positioning column also limits the height direction of the liquid cooling pack, so that the liquid cooling plate and the small side of the battery fit closely;

[0043] A liquid cooling positioning groove 20 is also provided in the middle of the supporting fin 22 of the bottom cover plate 8. The liquid cooling plate 9 is supported and installed in the liquid cooling positioning groove 20, and the liquid cooling positioning column 21 is inserted into the liquid cooling positioning hole of the impeller plate to reserve an installation position for the liquid cooling plate 9. In this way, the liquid cooling plate 9 can be directly installed inside when being installed.

[0044] Among them, Figure 5 and Figure 6 As shown, side panel mounting holes 12 are respectively provided on both sides of the top cover plate 7 and the bottom cover plate 8. After the top cover plate 7 and the bottom cover plate 8 are docked with the side cover plate 6, they are connected and fixed to the side cover plate 6 through the side panel mounting holes 12.

[0045] Among them, Figure 6 As shown, the outer side surfaces of the top cover plate 7 and the bottom cover plate 8 are both provided with a pressure strip 2 limit platform, a pressure strip 2 fixing groove is formed in the middle of the pressure strip 2 limit platform, and the pressure strip 2 is installed in the pressure strip 2 fixing groove. When the pressure strip 2 is installed in the pressure strip 2 fixing groove, the two sides of the pressure strip 2 are fixedly connected to the front end plate 4 and the rear end plate 3 respectively.

[0046] like Figure 3 and Figure 4As shown, the liquid cooling plate 9 includes a plurality of harmonica tubes 13 arranged horizontally at intervals, and a plurality of end conduits 14, and any two adjacent harmonica tubes 13 are connected in series via the end conduits 14, a first water nozzle 15 is provided on the harmonica tube 13 at the head end, and a second water nozzle 16 is provided on the harmonica tube 13 at the tail end, the first water nozzle 15 and the second water nozzle 16 respectively pass through the reserved holes on the front end plate 4 and the front panel 5 and extend to the outside, cold water enters the harmonica tube 13 from the first water nozzle 15, and then converges to the next harmonica tube 13 through the end conduit 14, and thus circulates, and finally the cooled water is discharged from the second water nozzle 16, so as to achieve the purpose of liquid cooling.

[0047] Among them, the inner side surface of the side cover plate 6 is provided with reinforcing ribs 11, and the grille heat dissipation holes 10 are arranged on the side cover plate 6. The grille heat dissipation holes 10 can be designed with uneven meshes according to the length of the air inlet duct to neutralize the phenomenon of different lengths of the air duct.

[0048] Among them, Figure 2 , Figure 3 As shown, the side cover plate 6 is provided with side plate mounting holes 12 corresponding to the top cover plate 7 and the bottom cover plate 8 , and the top cover plate 7 , the bottom cover plate 8 and the side cover plate 6 are fixed with screws through the side plate mounting holes 12 .

[0049] like Figure 7 As shown, the cooling fan is arranged on the front panel 5 of the battery pack, and the cooling fan 25 is facing the main air duct in the middle of the battery pack. It enters the interior of the battery pack through the grille heat dissipation holes 10 on both sides. The cold air passes through the battery pole surface, the upper and lower sides, enters the main air duct, and is discharged from the fan port to realize the air-cooled heat dissipation cycle of the battery pack. The liquid cooling plate 9 is evenly arranged on the surface of the battery cell 1 and fixed by a cover plate to cool the battery cell 1.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A plug-in frame battery pack, characterized in that: include: A group of battery cells arranged side by side; A battery cell shell comprises a front end plate (4), a rear end plate (3), left and right side cover plates (6), a top cover plate (7) and a bottom cover plate (8), wherein the front end plate (4), the rear end plate (3), the left and right side cover plates (6), the top cover plate (7) and the bottom cover plate (8) surround and form a battery cell installation cavity, wherein the battery cell installation cavity has a main air duct, the battery cell (1) is installed in the battery cell installation cavity, and the main air duct is arranged on the two end pole surfaces of the battery cell and the upper and lower side surfaces of the battery; A liquid cooling plate (9) is fixedly installed between the battery cell (1) and the bottom cover plate (8) and is used for bottom / top water cooling of the battery cell (1); The side cover plates (6) are all provided with grille heat dissipation holes (10), and external cold air flows through the grille heat dissipation holes (10) and passes through the pole surface of each battery cell (1) and flows into the main air duct (26); A cooling fan (25) is installed on a front panel (5), wherein the front panel (5) is installed on the outside of the front end panel (4). The cooling fan (25) is arranged facing the main air duct (26), and the air entering the main air duct (26) is discharged to the outside through the cooling fan (25).

2. The plug-in frame battery pack according to claim 1, characterized in that: The top cover plate (7) and the bottom cover plate (8) are both provided with support fins (22) arranged at intervals, and battery cell (1) limit platforms are provided protruding from the support fins (22) located on both sides of the edge, and the two sides of the battery cell (1) are limited by the battery cell (1) limit platforms, and the battery cell (1) limit platforms are both provided with CCS fixing grooves (18).

3. The plug-in frame battery pack according to claim 2, characterized in that: An air duct is formed in the space formed between the supporting fins (22), and a blank area is formed in the middle of each supporting fin (22). A liquid cooling plate limiting column (21) is arranged in the blank area. A liquid cooling positioning groove (20) is also provided in the middle of the supporting fin (22) of the bottom cover plate (8), and the liquid cooling plate (9) is supported and installed in the liquid cooling positioning groove (20), with one side of the liquid cooling plate being in close contact with the upper / lower side of the battery cell, and the other side of the liquid cooling plate being in close contact with the cylindrical surface of the limiting column of the cover plate.

4. The plug-in frame battery pack according to claim 2, characterized in that: Side plate mounting holes (12) are respectively provided on both sides of the top cover plate (7) and the bottom cover plate (8); after the top cover plate (7) and the bottom cover plate (8) are butted with the side cover plate (6), they are connected and fixed to the side cover plate (6) via the side plate mounting holes (12).

5. The plug-in frame battery pack according to claim 2, characterized in that: The outer side surfaces of the top cover plate (7) and the bottom cover plate (8) are both provided with a pressure strip (2) limiting platform, a pressure strip (2) fixing groove is formed in the middle of the pressure strip (2) limiting platform, and the pressure strip (2) is installed in the pressure strip (2) fixing groove. When the pressure strip (2) is installed in the pressure strip (2) fixing groove, the two sides of the pressure strip (2) are fixedly connected to the front end plate (4) and the rear end plate (3) respectively.

6. The plug-in frame battery pack according to claim 1, characterized in that: The liquid cooling plate (9) comprises a plurality of harmonica tubes (13) arranged horizontally at intervals, and a plurality of end manifolds (14), wherein two adjacent harmonica tubes (13) are connected in series via the end manifolds (14), a first water nozzle (15) is arranged on the harmonica tube (13) at the head end, and a second water nozzle (16) is arranged on the harmonica tube (13) at the tail end, and the first water nozzle (15) and the second water nozzle (16) respectively pass through reserved holes on the front end plate (4) and the front panel (5) and extend to the outside.

7. The plug-in frame battery pack according to claim 1, characterized in that: The inner side surface of the side cover plate (6) is provided with reinforcing ribs (11), and the grille heat dissipation holes (10) are arranged on the side cover plate (6).

8. The plug-in frame battery pack according to claim 1, characterized in that: The side cover plate (6) is provided with side plate mounting holes (12) corresponding to the top cover plate (7) and the bottom cover plate (8); the top cover plate (7), the bottom cover plate (8) and the side cover plate (6) are fixed to the side plate mounting holes (12) by screws.

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