A semi-submerged heat dissipating energy storage system

Abstract

The utility model discloses a kind of semi-submerged heat dissipation battery systems, it is related to battery system technical field.Battery system includes battery plug-in box, several electric cores are equipped in battery plug-in box, and outlet is equipped on the lateral wall of battery plug-in box;Upper liquid storage tank, upper liquid storage tank is located at the top of battery plug-in box;Liquid outlet pipeline, one end of liquid outlet pipeline is communicated with upper liquid storage tank, another end extends downward and is towards battery plug-in box interior;Lower liquid storage tank, lower liquid storage tank is located at the bottom of battery plug-in box, and outlet is located above lower liquid storage tank;Liquid return pipeline, lower end of liquid return pipeline is communicated with lower liquid tank, upper end extends upward and is communicated with upper liquid storage tank, and pump body is further equipped on liquid return pipeline.The utility model of a kind of semi-submerged heat dissipation battery system sets upper and lower liquid storage tank, and makes cooling liquid circulation flow, to reduce the amount of use of cooling liquid under the premise of meeting the demand of electric core heat dissipation, reduce pipeline flow pressure.

Description

Technical Field

[0001] This utility model relates to the field of battery system technology, and in particular to a semi-immersed heat dissipation battery system. Background Technology

[0002] Most current battery systems adopt a fully submerged design with sealed pipelines. This design has the problem of using a large amount of immersion fluid and excessive internal pressure in the pipelines, resulting in high pressure on the battery pack. Utility Model Content

[0003] This invention provides a semi-immersion cooling battery system, which includes upper and lower liquid storage tanks, and allows the coolant to circulate along the upper liquid storage tank - battery compartment - lower liquid storage tank - upper liquid storage tank. This reduces the amount of coolant used and lowers the pipeline flow pressure while meeting the heat dissipation requirements of the battery cells, thereby solving the aforementioned technical problems.

[0004] The technical solution of this utility model to solve the above problems is: to provide a semi-immersed heat dissipation battery system, the battery system comprising: A battery compartment containing several battery cells, and a liquid outlet on the side wall of the battery compartment; An upper liquid storage tank is located above the battery compartment. A liquid outlet pipe, one end of which is connected to the upper liquid storage tank and the other end extends downward toward the inside of the battery compartment; The lower liquid storage tank is located below the battery compartment, and the liquid outlet is located above the lower liquid storage tank. The return liquid pipeline has its lower end connected to the lower liquid outlet tank and its upper end extending upward and connected to the upper liquid storage tank. The return liquid pipeline is also equipped with a pump body.

[0005] Furthermore, the battery system also includes an outer casing, which has a accommodating cavity for accommodating the battery compartment, the upper electrolyte tank, and the lower electrolyte tank.

[0006] Furthermore, multiple battery boxes are provided, and the multiple battery boxes are equidistantly arranged along the height direction.

[0007] Furthermore, the liquid outlet pipe is also equipped with a flow regulating valve.

[0008] Furthermore, the liquid outlet is a vertically oriented strip-shaped hole, and a baffle is movably disposed within the strip-shaped hole. The baffle has a through hole, and the baffle can be adjusted vertically within the strip-shaped channel to adjust the height of the through hole, thereby adjusting the liquid level in the battery compartment.

[0009] Furthermore, the battery compartment is provided with a rotatable adjusting shaft, which is located below the liquid outlet. The baffle is wound around the adjusting shaft, and the upper end of the baffle extends movably into the liquid outlet. The through hole is opened at the upper end of the baffle.

[0010] Furthermore, an electric telescopic rod is provided on the side of the liquid outlet. The electric telescopic rod is vertically arranged, and its upper end is fixedly connected to the end body of the baffle, which is movably disposed inside the liquid outlet.

[0011] Furthermore, a reset torsion spring is also sleeved on the adjusting shaft. One end of the reset torsion spring is fixedly connected to the adjusting shaft, and the other end is fixedly connected to the wall of the battery compartment. The reset torsion spring is used to drive the adjusting shaft to reset and rotate, thereby causing the baffle to move downward.

[0012] The beneficial effects of this utility model are: This utility model discloses a semi-immersed heat dissipation battery system, which is equipped with upper and lower liquid storage tanks, and the coolant is circulated along the upper liquid storage tank-battery socket-lower liquid storage tank-upper liquid storage tank. While ensuring that its heat dissipation performance is comparable to or close to that of a fully immersed battery system, it reduces the amount of coolant used and lowers the pipeline flow pressure.

[0013] In addition, the side wall of the battery compartment is equipped with a liquid outlet and a baffle. The baffle is movably installed at the liquid outlet. Technicians can regard the upper edge of the baffle as the lower edge of the liquid outlet, or regard the through hole at the upper end of the baffle as the liquid outlet hole. By moving the baffle up and down within the liquid outlet, the height of the coolant in the battery compartment can be adjusted. The flow rate regulating valve can be used to regulate the liquid outflow from the upper storage tank, and the pump body can be used to regulate the liquid return flow. This comprehensively regulates the heat dissipation performance of the entire battery system to meet the heat dissipation requirements under different operating conditions and different loaded capacities. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0015] Figure 1 This is an overall structural diagram of the battery system in this embodiment; Figure 2 This is a structural diagram of the upper liquid storage tank, battery compartment, and lower liquid storage tank in this embodiment; Figure 3This is a structural diagram of the battery compartment in this embodiment; 1-Battery housing, 11-Liquid outlet, 12-Baffle, 13-Through hole; 2-Upper liquid storage tank, 21-Discharge pipe, 22-Flow regulating valve; 3-Lower liquid storage tank, 31-Return liquid pipeline, 32-Pump body; 4-Outer casing, 5-Battery cell. Detailed Implementation

[0016] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0017] Please see Figures 1 to 3 This utility model discloses a semi-immersion heat dissipation battery system, comprising an upper liquid storage tank 2 and a lower liquid storage tank 3 arranged vertically. Three battery insertion boxes 1 are also provided between the upper and lower liquid storage tanks 2 and 3, and are equidistant along the height direction. The lower liquid storage tank 3 and the three battery insertion boxes 1 all have upward openings. Three liquid outlet pipes 21 are provided on the side wall of the upper liquid storage tank 2, extending downwards and reaching above the openings of the three battery insertion boxes 1. Each of the three battery insertion boxes 1 has a liquid outlet 11 on its side wall, located above the opening of the lower liquid storage tank 3. A return liquid pipe 31 is also connected between the upper and lower liquid storage tanks 2 and 3, and a pump body 32 is provided on the return liquid pipe 31.

[0018] For this, please refer to Figure 2 In this embodiment, the coolant flows into the three battery compartments 1 through the three outlet pipes 21 to cool the battery cells in the three battery compartments 1. The coolant in the three battery compartments 1 gradually increases. When the coolant level in the three battery compartments 1 exceeds the height of the outlet 11, some of the coolant will flow from the outlet 11 into the lower outlet tank. The operation of the pump 32 can make the coolant in the lower storage tank 3 flow back to the upper outlet tank along the return pipe 31.

[0019] In this way, since the coolant can circulate throughout the battery system to cool the cells in the battery compartment 1 and ensure the safety of the cells, the amount of coolant used in each battery compartment 1 can be appropriately reduced to reduce the pressure on the battery compartment 1 and the pipes inside the compartment.

[0020] It should be noted that in other embodiments, the specific number of battery compartments 1 can be one, two, or more.

[0021] In other embodiments, in order to allow the coolant to contact as much of the cell surface as possible, the lower end of the outlet pipe 21 extends to the center of the upper opening of the battery compartment 1; and, if necessary, a spray head can be provided at the lower end of the outlet pipe 21 so that the coolant is sprayed into the battery compartment 1 in a spray manner, so that the coolant can contact more of the cell surface and improve its cooling and heat dissipation effect.

[0022] In addition, please see Figure 1 In this embodiment, the battery system also has an outer casing 4, which has a accommodating cavity that can simultaneously accommodate the upper liquid storage tank 2, three battery plug boxes 1, and the lower liquid storage tank 3, and provides isolation and protection for the battery cells in the three battery plug boxes 1.

[0023] In other embodiments, the outer casing 4 may also be provided with multiple accommodating cavities to respectively accommodate the upper liquid storage tank 2, the battery compartment 1, and the lower liquid storage tank 3. The different accommodating cavities are provided with interconnected channels. The return liquid pipe 31 or the outlet liquid pipe 21 can be connected to the different accommodating cavities through the channels, thereby connecting the upper liquid storage tank 2 and the lower liquid storage tank 3, or connecting the upper liquid storage tank 2 and the battery compartment 1.

[0024] Furthermore, in this embodiment, each outlet pipe 21 is provided with a flow regulating valve 22 at its upper end. The flow regulating valve 22 is an electrically controlled valve. Technicians can adjust the flow regulating valve 22 according to the different working conditions of the battery system in this embodiment, thereby adjusting the coolant outflow speed and flexibly adjusting the coolant circulation speed to ensure that the coolant cooling effect is always compatible with the battery cell operating conditions.

[0025] Further, please refer to Figure 3In this embodiment, the outlet 11 is a vertically oriented strip-shaped hole on the front wall of the battery compartment 1. Sliding grooves are formed on both the left and right sidewalls of the strip-shaped hole. The left and right sides of the baffle 12 are respectively engaged with the two sliding grooves. A through hole 13 is formed on the baffle 12, and the vertical unfolded length of the baffle 12 is greater than or equal to the length of the strip-shaped hole. Therefore, the baffle 12 can be used to block the strip-shaped hole and can move vertically within it. Furthermore, when the baffle 12 moves upward, its blocking area of ​​the strip-shaped hole increases, and the through hole 13 on the baffle 12 rises; when the baffle 12 moves downward, its blocking area of ​​the strip-shaped hole decreases, and the through hole 13 on the baffle 12 descends.

[0026] To address this, technicians can vertically move the baffle 12 within the slotted hole, thereby adjusting the area of ​​the baffle 12 blocking the slotted hole and adjusting the height of the through hole 13 on the baffle 12. This ensures that coolant can only flow out when the coolant level in the battery compartment 1 is higher than the lower edge of the through hole 13 on the baffle 12. If the coolant level in the battery compartment 1 is lower than the lower edge of the through hole 13 on the baffle 12, the coolant will press the baffle 12 against the slotted hole, preventing the coolant from flowing out. This allows for adjustment of the coolant level in the battery compartment 1 to meet the liquid cooling requirements of the battery cells.

[0027] Additionally, please see Figure 2 Because the length of the strip hole is relatively large, its height is close to that of the side wall of the battery compartment 1. This results in a small space height inside the battery compartment 1 below the strip hole, making it impossible for the rigid baffle 12, which is of similar length to the strip hole, to slide downwards after being installed inside the strip hole. Therefore, in this embodiment, a flexible baffle 12 is selected so that the lower part of the baffle 12 will flexibly roll up when the baffle 12 moves downwards, or be automatically deformed by being blocked by the bottom wall of the battery compartment 1. When it moves upwards, the baffle 12 will also automatically straighten up to accommodate the excessively long opening of the liquid outlet 11.

[0028] It should be noted that in other embodiments, if the length of the strip hole is less than half the height of the side wall of the battery compartment 1, the baffle 12 can also be a rigid baffle 12.

[0029] Furthermore, in this embodiment, in order to orderly accommodate the lower curved portion of the flexible baffle 12, an adjustment shaft is also provided on the inner side of the front wall of the battery compartment 1. The adjustment shaft is located below the liquid outlet 11, that is, below the strip hole. The lower end of the baffle 12 is wound around the adjustment shaft, and the upper end of the baffle 12 extends into the strip hole. The through hole 13 is opened at the upper end of the baffle 12.

[0030] Furthermore, in order to enable the baffle 12 to move automatically within the slot, a small electric telescopic rod is vertically installed inside the battery compartment 1. The electric telescopic rod is set close to the slot, and its upper end is horizontally fixedly connected to the upper end of the baffle 12.

[0031] In addition, a reset torsion spring is also fitted on the adjusting shaft. One end of the reset torsion spring is fixedly connected to the adjusting shaft, and the other end is fixedly connected to the wall of the battery compartment 1.

[0032] To address this, technicians can use an external switch to control the extension of the electric telescopic rod, which in turn moves the baffle 12 upwards to raise the coolant level in the battery compartment 1. Simultaneously, as the baffle 12 moves upwards, it pulls the adjusting shaft to rotate, reducing the length of the baffle 12 wrapped around the adjusting shaft and increasing the portion of the baffle 12 extending into the slot. The return torsion spring elastically deforms as the adjusting shaft rotates. Alternatively, technicians can use an external switch to control the shortening of the electric telescopic rod, which correspondingly moves the upper end of the baffle 12 downwards. The adjusting shaft, under the elastic force of the return torsion spring, automatically rotates synchronously, causing the lower end of the baffle 12 to automatically wrap around the adjusting shaft.

[0033] Anything not mentioned above applies to existing technologies.

[0034] 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 it. Although this utility model 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; and these 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 utility model.

Claims

1. A semi-immersed heat dissipation battery system, characterized in that, The battery system includes: A battery box (1) is provided with a number of battery cells inside the battery box (1), and an outlet (11) is provided on the side wall of the battery box (1). Upper liquid storage tank (2), the upper liquid storage tank (2) is located above the battery compartment (1); The liquid outlet pipe (21) has one end connected to the upper liquid storage tank (2) and the other end extending downward toward the inside of the battery compartment (1); The lower liquid storage tank (3) is located below the battery compartment (1), and the liquid outlet (11) is located above the lower liquid storage tank (3). The return liquid pipe (31) is connected at its lower end to the lower liquid storage tank and at its upper end to extend upward and connect to the upper liquid storage tank (2). The return liquid pipe (31) is also equipped with a pump body (32).

2. The battery system as claimed in claim 1, characterized in that, The battery system also includes an outer casing (4), which has a accommodating cavity for accommodating the battery compartment (1), the upper liquid storage tank (2), and the lower liquid storage tank (3).

3. The battery system as described in claim 1, characterized in that, The battery compartment (1) is provided in multiple ways, and the multiple battery compartments (1) are arranged at equal intervals along the height direction.

4. The battery system as claimed in claim 1, characterized in that, The liquid outlet pipe (21) is also equipped with a flow regulating valve (22).

5. The battery system as claimed in claim 1, characterized in that, The outlet (11) is a vertically opened strip-shaped hole. A baffle (12) is movably installed in the strip-shaped hole. A through hole (13) is opened on the baffle (12). The baffle (12) can adjust the height of the through hole (13) by moving vertically in the strip-shaped hole, thereby adjusting the liquid level in the battery box (1).

6. The battery system as claimed in claim 5, characterized in that, The battery compartment (1) is provided with a rotatable adjustment shaft, which is located below the liquid outlet (11). The baffle (12) is wound around the adjustment shaft, and the upper end of the baffle (12) extends into the liquid outlet (11). The through hole (13) is opened at the upper end of the baffle (12).

7. The battery system as claimed in claim 6, characterized in that, An electric telescopic rod is also provided on the side of the liquid outlet (11). The electric telescopic rod is arranged vertically, and the upper end of the electric telescopic rod is fixedly connected to the end body of the baffle (12) which is movably arranged inside the liquid outlet (11).

8. The battery system as claimed in claim 6, characterized in that, A reset torsion spring is also fitted on the adjusting shaft. One end of the reset torsion spring is fixedly connected to the adjusting shaft, and the other end is fixedly connected to the wall of the battery compartment (1). The reset torsion spring is used to drive the adjusting shaft to reset and rotate, thereby causing the baffle (12) to move downward.

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