Battery cell liquid cooling box

Abstract

The utility model discloses a kind of battery liquid cooling box, including box and box cover, the box cover is set to the top of box, the bottom surface inside of box is equipped with liquid cooling cavity, the liquid cooling cavity includes several splitter plates and several reversing plates, the reversing plate is oppositely set to the both sides of liquid cooling cavity, forms S type structure's liquid cooling flow channel, the side of box is equipped with liquid inlet and liquid outlet, the liquid inlet and liquid outlet are all with the both ends of liquid cooling flow channel corresponding communication, several the splitter plate is respectively set between two reversing plates, and the both ends of splitter plate and the inner wall of liquid cooling cavity exist interval. The utility model provides a kind of battery liquid cooling box, by being equipped with liquid cooling flow channel in the bottom of box, to be able to cool from bottom to top to the battery inside of box.

Description

Technical Field

[0001] This utility model relates to the field of battery cooling technology, and in particular to a liquid-cooled housing for battery cells. Background Technology

[0002] Currently, in the energy storage and new energy fields, multiple battery cells are connected in series and assembled in a casing. The casing protects the cells, forming a battery pack for energy storage. However, battery packs generate significant heat during charging and discharging. Overheating can negatively impact battery performance and even lead to cell malfunctions. Therefore, timely heat dissipation is crucial. Traditional battery pack cooling typically uses air cooling, which relies on fans. This method is inefficient, noisy, and has a short lifespan. Furthermore, air cooling is inconvenient for wiring when multiple battery packs are used together. Compared to traditional air cooling, liquid cooling is more efficient and provides more uniform temperature control. Therefore, the key challenge is integrating liquid cooling with the casing to facilitate cell assembly. Utility Model Content

[0003] The purpose of this utility model is to provide a liquid-cooled battery cell housing, which can cool the battery cells inside the housing from bottom to top by setting a liquid cooling channel at the bottom of the housing.

[0004] The technical solution adopted by the liquid-cooled battery cell housing disclosed in this utility model is as follows: A liquid-cooled battery cell enclosure includes a housing and a cover. The cover is positioned above the housing. A liquid-cooled cavity is located inside the bottom surface of the housing. The liquid-cooled cavity includes several flow dividers and several reversing plates. The reversing plates are positioned opposite each other on both sides of the liquid-cooled cavity to form an S-shaped liquid-cooled flow channel. One side of the housing has an inlet and an outlet, both of which are connected to the two ends of the liquid-cooled flow channel. Several flow dividers are respectively positioned between two reversing plates, and there is a gap between the two ends of each flow divider and the inner wall of the liquid-cooled cavity.

[0005] As a preferred embodiment, the housing includes a bottom plate, two side plates, a front plate, and a rear plate. The side plates, front plate, and rear plate are arranged around the edge above the bottom plate, and the side plates, front plate, and rear plate are all welded and fixed to form a cavity for placing the battery cells. The liquid cooling channel is arranged on the inner wall of the bottom plate.

[0006] As a preferred embodiment, the surface of the box cover is provided with a plurality of reinforcing ribs arranged in a row, the inner side of the side plate is provided with a boss, the box cover is fixed to the upper end of the boss, and the surface of the box cover is flush with the top of the side plate.

[0007] As a preferred embodiment, pressure strips are fixedly provided at the connection between the box cover and the side panels, front panel and rear panel.

[0008] As a preferred embodiment, the upper and lower ends of the outer side of the side plate are provided with protruding ridges, and a support strip is provided between the two protruding ridges, and the support strip is welded and fixed to the protruding ridges.

[0009] As a preferred embodiment, connecting blocks are embedded on the upper and lower ends of the convex ridge, and the connecting blocks are corresponding to each other.

[0010] As a preferred embodiment, the liquid cooling cavity is provided with a flow divider cavity corresponding to the liquid inlet hole, and the flow divider cavity is provided with a flow divider hole between the flow divider plates.

[0011] The beneficial effects of the battery cell liquid cooling box disclosed in this utility model are as follows: During the assembly of the battery pack, multiple battery cells are placed in the box, and the box cover is fixedly connected to the box. The box and the box cover form a protective outer shell. External coolant is introduced into the liquid cooling chamber through the inlet hole. In the liquid cooling chamber, the coolant flows along the liquid cooling channels formed by several commutator plates, reducing the heat at the bottom of the box and cooling the battery cells inside the box from bottom to top. Then, the coolant is discharged from the outlet hole, forming an external circulation cooling of the coolant. When the coolant flows between two commutator plates, it is blocked and diverted by the diverter plate, thereby reducing the flow rate of the coolant and increasing the residence time of the coolant in the liquid cooling chamber, thus improving the cooling effect. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a liquid-cooled battery cell housing according to this utility model.

[0013] Figure 2 This is a structural schematic diagram of a liquid-cooled battery cell housing according to this utility model.

[0014] Figure 3 This is a structural schematic diagram of a liquid-cooled battery cell housing according to this utility model.

[0015] Figure 4 This is a structural schematic diagram of a liquid-cooled battery cell housing according to this utility model. Detailed Implementation

[0016] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings: Please refer to Figure 1 , Figure 2 and Figure 3A liquid-cooled battery cell housing 10 includes a housing 10 and a housing cover 20. The housing cover 20 is disposed above the housing 10. A liquid-cooled cavity 11 is provided inside the bottom surface of the housing 10. The liquid-cooled cavity 11 includes a plurality of flow dividers 12 and a plurality of reversing plates 13. The reversing plates 13 are disposed opposite to each other on both sides of the liquid-cooled cavity 11 to form an S-shaped liquid-cooled flow channel. A liquid inlet hole 14 and a liquid outlet hole 15 are provided on one side of the housing 10. The liquid inlet hole 14 and the liquid outlet hole 15 are respectively connected to the two ends of the liquid-cooled flow channel. The plurality of flow dividers 12 are respectively disposed between two reversing plates 13, and there is a gap between the two ends of the flow dividers 12 and the inner wall of the liquid-cooled cavity 11.

[0017] During battery pack assembly, multiple battery cells are placed in the housing 10, and the housing cover 20 is fixedly connected to the housing 10. The housing 10 and the housing cover 20 form a protective outer shell. External coolant is introduced into the liquid cooling chamber 11 through the inlet hole 14. In the liquid cooling chamber 11, the coolant flows along the liquid cooling channels formed by several reversing plates 13, reducing the heat at the bottom of the housing 10 and cooling the battery cells inside the housing 10 from bottom to top. The coolant is then discharged from the outlet hole 15, forming an external circulation cooling of the coolant. When the coolant flows between two reversing plates 13, it is blocked and diverted by the diverter plate 12, thereby reducing the flow rate of the coolant and increasing the residence time of the coolant in the liquid cooling chamber 11, thus improving the cooling effect.

[0018] The liquid cooling chamber 11 is provided with a flow distribution chamber 16 corresponding to the liquid inlet 14. The flow distribution chamber 16 is provided with a flow distribution hole 17 between the flow distribution plate 12. When the coolant enters the liquid cooling chamber 11, it first enters the flow distribution chamber 16, and then enters the flow distribution plate 12 through the flow distribution hole 17 of the flow distribution chamber 16 for flow distribution. This achieves better control of the flow rate and also better alleviates the hydraulic pressure when the coolant enters.

[0019] The housing 10 includes a bottom plate 102, two side plates 103, a front plate 104, and a rear plate 105. The side plates 103, the front plate 104, and the rear plate 105 are arranged around the edge above the bottom plate 102, and the side plates 103, the front plate 104, and the rear plate 105 are all fixed by welding to form a cavity for placing the battery cells. The liquid cooling channel is arranged on the inner wall of the bottom plate 102.

[0020] During assembly, corresponding detectors, fire controllers, etc. can be installed through the front plate 104 and the rear plate 105, and welding is used to improve the overall strength, avoiding loosening that occurs with traditional fastener fixing methods.

[0021] The surface of the cover 20 is provided with several reinforcing ribs 21 arranged in a row to improve the overall strength of the cover 20. The inner side of the side plate 103 is provided with a boss 109, and the cover 20 is fixed to the upper end of the boss 109. The surface of the cover 20 is flush with the top of the side plate 103 to ensure that the top plate of the box 10 remains flat after the cover 20 is installed, which facilitates the stability when multiple battery packs are stacked. Pressure strips 22 are fixed at the connection between the cover 20 and the side plate 103, the front plate 104 and the rear plate 105 to improve the stability of the cover 20.

[0022] The upper and lower ends of the outer side plate 103 are provided with protruding ribs 106, and a support strip 107 is provided between the two protruding ribs 106. The support strip 107 is welded and fixed to the protruding ribs 106. The protruding ribs 106 and the support strip 107 improve the impact resistance of the side plate 103. At the same time, the protruding ribs 106 also have a raised effect. When an external object collides, it will first contact the protruding ribs 106, avoiding direct pressure on the surface of the side plate 103 and damage to the internal battery cell.

[0023] Please refer to Figure 4 Connecting blocks 108 are embedded on the upper and lower ends of the protruding ribs 106, and the connecting blocks 108 correspond to each other. When multiple boxes 10 are stacked on top of each other, the connecting blocks 108 on the upper and lower ends of the protruding ribs 106 of the two boxes 10 are aligned, and the two connecting blocks 108 are fixedly connected by fasteners such as bolts, so that the multiple boxes 10 can be stacked and fixed.

[0024] This utility model provides a liquid-cooled housing for battery cells. During battery pack assembly, multiple battery cells are placed in the housing, and the housing cover is fixedly connected to the housing. The housing and housing cover form a protective outer shell. External coolant is introduced into the liquid-cooling chamber through the inlet hole. In the liquid-cooling chamber, the coolant flows along the liquid-cooling channels formed by several commutator plates, reducing the heat at the bottom of the housing and cooling the battery cells inside the housing from bottom to top. The coolant is then discharged from the outlet hole, forming an external circulation cooling of the coolant. When the coolant flows between two commutator plates, it is blocked and diverted by the diverter plate, thereby reducing the flow rate of the coolant and increasing the residence time of the coolant in the liquid-cooling chamber, thus improving the cooling effect.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A liquid-cooled housing for battery cells, characterized in that, The device includes a housing and a cover. The cover is located on top of the housing. The bottom surface of the housing has a liquid cooling cavity. The liquid cooling cavity includes several flow dividers and several reversing plates. The reversing plates are arranged opposite each other on both sides of the liquid cooling cavity to form an S-shaped liquid cooling channel. One side of the housing has a liquid inlet and a liquid outlet, which are connected to the two ends of the liquid cooling channel. Several flow dividers are respectively arranged between two reversing plates, and there is a gap between the two ends of the flow dividers and the inner wall of the liquid cooling cavity.

2. The cell liquid-cooled housing as described in claim 1, characterized in that, The housing includes a bottom plate, two side plates, a front plate, and a rear plate. The side plates, front plate, and rear plate are arranged around the edge above the bottom plate, and the side plates, front plate, and rear plate are all welded and fixed to form a cavity for placing the battery cells. The liquid cooling channel is arranged on the inner wall of the bottom plate.

3. The cell liquid-cooled housing as described in claim 2, characterized in that, The box cover surface is provided with a number of reinforcing ribs arranged in a row, the inner side of the side plate is provided with a boss, the box cover is fixed to the upper end of the boss, and the surface of the box cover is flush with the top of the side plate.

4. The cell liquid-cooled housing as described in claim 3, characterized in that, Pressure strips are fixed at the connection points between the box cover and the side panels, front panel, and rear panel.

5. The cell liquid-cooled housing as described in claim 2, characterized in that, The upper and lower ends of the outer side plate are provided with protruding ridges, and a support strip is provided between the two protruding ridges. The support strip is welded and fixed to the protruding ridges.

6. The cell liquid-cooled housing as described in claim 5, characterized in that, Connecting blocks are embedded on the upper and lower ends of the convex ridge, and the connecting blocks are corresponding to each other.

7. The cell liquid-cooled housing as described in claim 1, characterized in that, The liquid cooling cavity is provided with a flow divider cavity corresponding to the liquid inlet hole, and the flow divider cavity is provided with a flow divider hole between the flow divider plates.

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