Immersed battery box

Abstract

The utility model discloses an immersed battery box, and belongs to the technical field of new energy batteries. The battery box comprises a box body and a box cover covering the box body, the box body is filled with immersion liquid, a first partition plate and a second partition plate are arranged in the box body at intervals and divide the box body into a liquid inlet bin, a battery cell bin and an electric appliance bin, and a liquid inlet and a liquid outlet are formed in the first partition plate and the second partition plate respectively; a liquid inlet pipeline is arranged on the outer wall of the liquid inlet bin; a single-row battery cell is mounted in the battery cell bin, the single-row battery cell comprises a plurality of battery cells, adjacent battery cells are arranged at intervals to form a channel, a plurality of flow baffles are arranged on the side wall of the battery cell bin, and the flow baffles are alternately arranged at an inlet and an outlet of the channel to enable the channel to form a roundabout flow channel in the electric appliance bin; and a liquid outlet pipeline is arranged on the outer wall of the electric appliance bin. According to the utility model, the battery cells are arranged at intervals, and the flow baffle plate enables a roundabout flow channel to be formed in the box body, so that immersion liquid can be in contact with the large surface of each battery cell, and heat on the surfaces of the battery cells can be taken away quickly and uniformly in time.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, specifically to an immersion battery box. Background Technology

[0002] Immersion liquid cooling technology is an effective thermal management method in battery energy storage systems. It achieves efficient heat exchange by directly immersing the battery in a coolant with high thermal conductivity. Compared with traditional liquid plate cooling technology, immersion liquid cooling technology has significant advantages in heat exchange efficiency and temperature uniformity. This technology can significantly reduce the heat generated by the battery during high-rate charging and discharging, thereby improving battery safety and lifespan.

[0003] Most existing immersion battery boxes suffer from problems such as lack of flow channels or unreasonable flow channel design, resulting in fluids not flowing according to the designed flow channels. This causes temperature differences and high temperatures even when the battery is fully submerged. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing an immersion battery box that allows the immersion liquid to flow over the surface of each battery cell within the battery box, enabling it to remove heat from the cell surface quickly, efficiently, and evenly.

[0005] To achieve the above objectives, this utility model designs an immersion battery box. It includes a box body and a cover fitted onto the box body. The box body is filled with an immersion liquid. A first partition and a second partition are spaced apart within the box body, dividing the box body into a liquid inlet chamber, a cell chamber, and an electrical compartment. The first and second partitions respectively have a liquid inlet and an outlet. A top plate is provided on the top of the liquid inlet chamber and the cell chamber. A liquid inlet pipe is provided on the outer wall of the liquid inlet chamber. A single row of cells is installed in the cell chamber, comprising multiple cells. Adjacent cells are spaced apart to form channels. Multiple baffles are provided on the side wall of the cell chamber, alternately positioned at the channel inlets and outlets (i.e., at the two ends of the channels) to create a meandering flow path within the electrical compartment. One end of each baffle is fixed to the side wall of the cell chamber, and the other end is attached to or fixed to the end of a corresponding cell. A liquid outlet pipe is provided on the outer wall of the electrical compartment.

[0006] Preferably, the channel is provided with a foam board, which includes a foam board body and thickened strips at the upper and lower ends of the foam board body. The thickness of the thickened strips is greater than the thickness of the foam board body. The thickness of the thickened strips being greater than the thickness of the foam board body creates an immersion liquid channel between the connected battery cells. The upper and lower ends of the foam board are flush with the upper and lower ends of the battery cells.

[0007] Preferably, the foam board body has multiple through holes evenly spaced on it. These through holes allow the immersion liquid to better remove heat from the large surface of the battery cell.

[0008] Preferably, the liquid outlet is equipped with an anti-backflow component.

[0009] Preferably, the anti-backflow assembly includes a rectangular frame designed corresponding to the liquid outlet, and multiple baffles are fixed at even intervals within the rectangular frame, the baffles being inclined downwards along the liquid flow direction. The anti-backflow assembly prevents the immersion liquid entering the electrical compartment from flowing back into the battery cell compartment.

[0010] Preferably, an aluminum busbar is provided on the top of adjacent battery cells, and multiple battery cells are connected in series through the aluminum busbar to form a single row of battery cells. The positive and negative terminals of the single row of battery cells are connected through a copper busbar.

[0011] Preferably, the electrical compartment is provided with an electrical mounting plate, and electrical components are fixed on the electrical mounting plate.

[0012] Preferably, a fixed end plate is attached to the outer side of both the first and second partitions, and the fixed end plate is fixed to the bottom plate of the box.

[0013] Preferably, the fixing end plate adopts a hollow design, and the top two ends of the fixing end plate are provided with screw holes, so that the fixing end plate is fixed to the bottom plate of the box body by screws.

[0014] Preferably, a sealing strip is provided between the box body and the box cover. The sealing strip enhances the sealing effect between the box body and the cover, preventing leakage of the submerged liquid inside the box due to long-term use.

[0015] Preferably, the inlet pipe and outlet pipe are respectively located on the outer walls at both ends of the casing, with the inlet pipe located at the bottom of the end wall and the outlet pipe located at the top of the end wall; the outlet is higher than the inlet. This design allows the immersion liquid to completely submerge the battery casing.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model creates a meandering flow channel inside the box by spacing the battery cells and using baffles, allowing the immersion liquid to contact the large surface of each battery cell, thus removing heat from the battery cell surface in a timely, rapid and uniform manner.

[0018] 2. This utility model divides the box into three compartments through the first and second partitions. A liquid outlet is reserved at the position where the cell compartment and the electrical compartment are connected, so that the immersion liquid, whose temperature has increased after cooling the battery, can continue to cool the electrical components, and the cooling capacity is reasonably distributed. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a perspective view of the housing of this utility model;

[0022] Figure 4 This is a top view of the housing of this utility model;

[0023] Figure 5 A perspective view of the housing of this utility model without the single row of battery cells and electrical components;

[0024] Figure 6 This is a structural diagram of the box cover and the top plate of the upper compartment of this utility model;

[0025] Figure 7 This is a structural diagram of the foam board of this utility model;

[0026] Figure 8 This is a structural diagram of the anti-backflow component of this utility model;

[0027] Figure 9 This is a flow diagram of the immersion liquid within the tank of this utility model.

[0028] Figure label:

[0029] 1. Box body, 11. First partition, 111. Liquid inlet, 12. Second partition, 121. Liquid outlet, 13. Liquid inlet chamber, 131. Liquid inlet pipe, 14. Battery cell chamber, 15. Electrical compartment, 151. Liquid outlet pipe, 152. Electrical mounting plate, 153. Electrical components, 16. Top plate of the chamber.

[0030] 2 box lids

[0031] 3 single-row cells, 31 cells, 32 channels, 33 aluminum busbars, 34 copper busbars

[0032] 4. Baffles

[0033] 5. Foam board, 51. Foam board body, 511. Through hole, 52. Thickened strip.

[0034] 6. Anti-backflow assembly, 61. Rectangular frame, 62. Baffle plate,

[0035] 7. Fixing plate

[0036] 8. Sealing strips. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0041] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] like Figures 1-8The immersion battery box shown includes a box body 1 and a box cover 2 covering the box body 1, with a sealing strip 8 between the box body 1 and the box cover 2. The box body 1 is filled with immersion liquid. A first partition 11 and a second partition 12 are arranged at intervals inside the box body 1, dividing the box body 1 into a liquid inlet chamber 13, a cell chamber 14, and an electrical compartment 15. Fixed end plates 7 are attached to the outer sides of the first partition 11 and the second partition 12, and the fixed end plates 7 are fixed to the bottom plate of the box body 1. The first partition 11 and the second partition 12 are respectively provided with a liquid inlet 111 and a liquid outlet 121; an anti-backflow component 6 is provided at the liquid outlet 121. The anti-backflow component 6 includes a rectangular frame 61 designed corresponding to the liquid outlet 121. Multiple baffles 62 are fixed evenly at intervals inside the rectangular frame 61, and the baffles 62 are inclined downward along the liquid flow direction. The liquid inlet chamber 13 and the cell chamber 14 are equipped with a top plate 16. The outer wall of the liquid inlet chamber 13 is equipped with a liquid inlet pipe 131. A single row of cells 3 is installed in the cell chamber 14. The single row of cells 3 includes multiple cells 31. The top of adjacent cells 31 is equipped with an aluminum busbar 33. Multiple cells 31 are connected in series through the aluminum busbar 33 to form a single row of cells 3. The positive and negative terminals of the single row of cells 3 are connected through a copper busbar 34. Channels 32 are formed at intervals between adjacent cells 31. Multiple baffles 4 are provided on the side wall of the cell chamber 14. The baffles 4 are alternately arranged at the inlet and outlet of the channels 32 so that the channels 32 form a meandering flow path in the electrical compartment 15. The outer wall of the electrical compartment 15 is equipped with a liquid outlet pipe 151. An electrical mounting plate 152 is provided in the electrical compartment 15. Electrical components 153 are fixed on the electrical mounting plate 152. The inlet pipe 131 and the outlet pipe 151 are respectively located on the outer walls of both ends of the housing 1. The inlet pipe 131 is located in the bottom area of ​​the end wall, and the outlet pipe 151 is located in the top area of ​​the end wall. The height of the outlet 121 is higher than that of the inlet 111.

[0044] A foam board 5 is provided inside the channel 32. The foam board 5 includes a foam board body 51 and thickening strips 52 located at the upper and lower ends of the foam board body 51. The thickness of the thickening strips 52 is greater than the thickness of the foam board body 51. A plurality of through holes 511 are evenly spaced on the foam board body 51.

[0045] The following describes the flow of the immersion liquid within the tank in this invention:

[0046] like Figure 9 The immersion liquid shown enters the inlet chamber 13 through the inlet 111, and then flows into the cell chamber 14 through the inlet 111. The immersion liquid contacts the large surface of each cell 31 through the meandering flow channel formed between adjacent cells 31 and the baffle 4, and removes the heat from the surface of the cell 31 in a timely, fast and uniform manner. After removing the heat from the cell, the immersion liquid enters the electrical chamber 15 through the outlet 121 reserved at the position where the cell chamber 14 and the electrical chamber 15 are connected, so that the immersion liquid, whose temperature has increased after cooling the battery, can continue to cool the electrical components 153 and reasonably distribute the cooling capacity.

[0047] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A submersible battery box, comprising a box body (1) and a box cover (2) covering the box body (1), wherein the box body (1) is filled with an immersion liquid, characterized in that: The housing (1) is provided with a first partition (11) and a second partition (12) spaced apart. The two partitions divide the housing (1) into a liquid inlet chamber (13), a battery cell chamber (14), and an electrical compartment (15). The first partition (11) and the second partition (12) are respectively provided with a liquid inlet (111) and a liquid outlet (121). The top of the liquid inlet chamber (13) and the battery cell chamber (14) are provided with a top plate (16). The outer wall of the liquid inlet chamber (13) is provided with a liquid inlet pipe (131). The battery cell compartment (14) is equipped with a single row of battery cells (3), which includes multiple battery cells (31). Adjacent battery cells (31) are spaced apart to form channels (32). Multiple baffles (4) are provided on the side wall of the battery cell compartment (14). The baffles (4) are alternately arranged at the inlet and outlet of the channels (32) so that the channels (32) form a meandering flow path in the electrical compartment (15). The outer wall of the electrical compartment (15) is provided with a liquid outlet pipe (151).

2. The immersion battery box according to claim 1, characterized in that: The channel (32) is provided with a foam board (5), which includes a foam board body (51) and thickening strips (52) located at the upper and lower ends of the foam board body (51). The thickness of the thickening strips (52) is greater than the thickness of the foam board body (51).

3. The immersion battery box according to claim 2, characterized in that: The foam board body (51) is provided with a plurality of through holes (511) evenly spaced.

4. The immersion battery box according to claim 1, characterized in that: An anti-backflow component (6) is provided at the liquid outlet (121).

5. The immersion battery box according to claim 4, characterized in that: The anti-backflow component (6) includes a rectangular frame (61) designed corresponding to the liquid outlet (121). Multiple baffles (62) are fixed evenly spaced within the rectangular frame (61), and the baffles (62) are inclined downward along the liquid flow direction.

6. The immersion battery box according to claim 1, characterized in that: An aluminum busbar (33) is provided on the top of each adjacent cell (31). Multiple cells (31) are connected in series through the aluminum busbar (33) to form a single row of cells (3). The positive and negative terminals of the single row of cells (3) are connected through a copper busbar (34).

7. The immersion battery box according to claim 1, characterized in that: The electrical compartment (15) is provided with an electrical mounting plate (152), and electrical components (153) are fixed on the electrical mounting plate (152).

8. The immersion battery box according to claim 1, characterized in that: Fixed end plates (7) are attached to the outer sides of the first partition (11) and the second partition (12), and the fixed end plates (7) are fixed to the bottom plate of the box body (1).

9. The immersion battery box according to claim 1, characterized in that: A sealing strip (8) is provided between the box body (1) and the box cover (2).

10. The immersion battery box according to claim 1, characterized in that: The inlet pipe (131) and outlet pipe (151) are respectively located on the outer walls of both ends of the housing (1). The inlet pipe (131) is located in the bottom area of ​​the end wall, and the outlet pipe (151) is located in the top area of ​​the end wall. The height of the outlet (121) is higher than that of the inlet (111).

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