Immersed liquid-cooled battery box device

Abstract

The utility model relates to the technical field of batteries, in particular to an immersed liquid-cooled battery box body device, which comprises a box body (100), an upper cover (200) and a battery module (300), the box body (100) is provided with a water inlet nozzle (101), a water outlet nozzle (102) and a containing cavity (103) with an opening, the upper cover (200) covers the opening, a bottom bracket (104) is arranged at the bottom of the containing cavity (103), and the battery module (300) is arranged in the containing cavity (103). The battery module (300) is installed on the bottom bracket (104), and the bottom bracket (104) is provided with a plurality of first through holes (1041) in the width direction. The bottom bracket is arranged in the accommodating cavity of the box body, the battery module is mounted on the bottom bracket, the first through holes are formed in the bottom bracket in the width direction, the whole accommodating cavity is filled with the cooling liquid, the battery module is completely immersed, heat generated when the battery module works can be taken away to the maximum extent, and the heat dissipation efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially a kind of immersion liquid cooling battery box device. BACKGROUND

[0002] When lithium ion battery is used in low temperature environment, two fatal weaknesses of lithium battery will appear. Firstly, the capacity of lithium battery will decrease obviously. For example, when the working environment temperature is 0 DEG C, the capacity of lithium battery will reduce about 20% than room temperature (25 DEG C). Secondly, the charging and discharging process of lithium battery will become abnormally slow in low temperature environment, so the charging and discharging time is extended several times, even more than ten times. In order to make lithium ion battery work normally, a layer of heat preservation layer is usually arranged on battery box in prior art, which plays a role of heat preservation on one hand, to avoid battery temperature being too low.

[0003] On the other hand, when the reaction rate in lithium ion battery reaches a certain critical point, the heat generated by the reaction in the battery exceeds the heat that can be dissipated, resulting in the increase of the reaction rate in the battery and the increase of the heat generated, and the thermal runaway of the battery. In thermal runaway, a large amount of heat is released rapidly, causing the temperature of the whole battery cell to rise to 900 DEG C or even higher. If the battery pack of electric vehicle cannot be ventilated and cooled in time under high temperature, it will cause the temperature of battery pack system to be too high or the temperature distribution to be uneven, finally reducing the charging and discharging cycle efficiency of battery, affecting the power and energy exertion of battery, and even causing thermal runaway, affecting the safety and reliability of battery. Therefore, the heat insulation material should also have the function of heat conduction, and the heat can be dissipated when the temperature of battery is too high.

[0004] At present, there are mainly two ways to solve the heat dissipation problem of lithium ion battery: one is through forced air cooling, and the other is through water cooling. The forced air cooling method has low heat dissipation efficiency due to the heat conduction performance of air itself. And the traditional water cooling method still has unsatisfactory heat dissipation performance due to the small contact area between lithium ion battery cell and water cooling pipe.

[0005] Therefore, the prior art needs to be improved and improved. CONTENT OF THE UTILITY MODEL

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an immersion liquid cooling battery box device with high heat dissipation efficiency.

[0007] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0008] The utility model provides an immersion type liquid cooling battery box device, including a box, an upper cover and a battery module, the box has a water inlet nozzle and a water outlet nozzle, the box has an open containing cavity, the upper cover covers the opening, the containing cavity bottom is provided with a bottom bracket, the battery module is installed on the bottom bracket, the bottom bracket is provided with a plurality of first through -hole along the width direction.

[0009] As a further scheme of the utility model, the cross section shape of the first through -hole is runway shape.

[0010] As a further scheme of the utility model, the open periphery of the box is provided with a plurality of first installation hole, the periphery of the upper cover is provided with a plurality of second installation hole, a first hexagon lock nut is installed in the first installation hole and the second installation hole corresponding thereto, make the box with the upper cover fixed together.

[0011] As a further scheme of the utility model, the open periphery of the box is provided with a plurality of first installation hole, the periphery of the upper cover is provided with a plurality of second installation hole, a first hexagon lock nut is installed in the first installation hole and the second installation hole corresponding thereto, make the box with the upper cover fixed together.

[0012] As a further scheme of the utility model, the both ends of the bottom bracket extend a convex edge to the bottom of the containing cavity, and the convex edge is provided with a second through -hole along the width direction.

[0013] As a further scheme of the utility model, the cross section shape of the second through -hole is square.

[0014] As a further scheme of the utility model, one end of the containing cavity is provided with a partition, one end of the partition close to the upper cover is provided with a connecting part, the sealing part corresponding to the connecting part is arranged on the sealing ring, and a plurality of second hexagon lock nuts are used to fix the upper cover, the sealing part and the connecting part together.

[0015] As a further scheme of the utility model, one end of the box is provided with a handle.

[0016] As a further scheme of the utility model, the water inlet nozzle has a water inlet connected with the containing cavity, and the water outlet nozzle has a water outlet connected with the containing cavity.

[0017] As a further scheme of the utility model, the height of the water outlet nozzle is higher than the height of the water inlet nozzle.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] Due to the adoption of the above structure design, the bottom bracket is arranged in the accommodating cavity of the box body, the battery module is installed on the bottom bracket, the first penetrating holes are arranged on the bottom bracket along the width direction, the cooling liquid fills the whole accommodating cavity, and the battery module is completely immersed, so that the heat generated by the battery module during work can be taken away maximally, and the heat dissipation efficiency is relatively high. BRIEF DESCRIPTION OF DRAWINGS

[0020] ATTACHMENT Figure 1 It is a structural schematic diagram of the embodiment of the utility model;

[0021] ATTACHMENT Figure 2 It is an exploded structural schematic diagram of the embodiment of the utility model.

[0022] The numbers in the drawing are respectively:

[0023] 100-box body, 200-upper cover, 300-battery module, 400-first hexagonal rivet nut, 500-sealing ring, 600-second hexagonal rivet nut;

[0024] 101-water inlet nozzle, 102-water outlet nozzle, 103-accommodating cavity, 104-bottom bracket, 105-first mounting hole, 106-middle partition plate, 107-handle;

[0025] 1041-first penetrating hole, 1042-protruding rib;

[0026] 1042a-second penetrating hole;

[0027] 201-second mounting hole;

[0028] 501-third mounting hole, 502-sealing part;

[0029] 1061-connection part;

[0030] 1011-water inlet;

[0031] 1021-water outlet. DETAILED DESCRIPTION

[0032] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not understood to be limiting of the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are used only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features.

[0033] In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature. Embodiments

[0035] As Figure 1 and Figure 2As shown, the application is a kind of submerged liquid-cooled battery box device, including a box 100, an upper cover 200 and a battery module 300, the box 100 has a water inlet nozzle 101 and a water outlet nozzle 102, the height of the water outlet nozzle 102 is higher than the height of the water inlet nozzle 101, the box 100 has an open accommodating cavity 103, the upper cover 200 is capped on the opening, the bottom of the accommodating cavity 103 is provided with a bottom bracket 104, the battery module 300 is installed on the bottom bracket 104, the bottom bracket 104 is provided with a plurality of first through holes 1041 along the width direction, through the above structure design, when running, the cooling liquid flows into the box from the water inlet nozzle, the cooling liquid will fill the entire box inside, directly immerse the battery module completely, the cooling liquid contacts and flows on the surface of the battery module, and the heat of the battery module is taken away in the cooling flow process, so as to achieve the purpose of precise temperature control of the battery module, and effectively improve the cycle service life of the battery module.

[0036] Specifically, the cross-sectional shape of the first through hole 1041 is a racetrack shape, so as to increase the contact area of the bottom bracket and the cooling liquid, so as to quickly take away the heat generated by the lower surface of the battery module through the bottom bracket, and improve the heat dissipation efficiency.

[0037] Specifically, the opening periphery of the box 100 is provided with a plurality of first mounting holes 105, the periphery of the upper cover 200 is provided with a plurality of second mounting holes 201, a first hexagonal rivet nut 400 is installed in the first mounting hole 105 and the second mounting hole 201 corresponding thereto, so that the box 100 and the upper cover 200 are fixed together.

[0038] Specifically, a sealing ring 500 is arranged between the opening periphery of the box 100 and the upper cover 200, the sealing ring 500 is provided with a plurality of third mounting holes 501 for the first hexagonal rivet nut 400 to pass through, and the sealing ring is arranged to improve the sealing between the box 100 and the upper cover 200.

[0039] Specifically, the two ends of the bottom bracket 104 extend a convex rib 1042 to the bottom of the accommodating cavity 103, the convex rib 1042 is provided with a second through hole 1042a along the width direction, and the cross-sectional shape of the second through hole is a square, the convex rib is arranged at the two ends of the bottom bracket, which is used to support the battery module and also can dissipate heat for the bottom bracket.

[0040] Specifically, one end of the accommodating cavity 103 is provided with a partition plate 106, which supports the internal components and ensures the structural stability of the device, and the partition plate 106 is provided with a connecting part 1061 near one end of the upper cover 200, the sealing ring 500 is provided with a sealing part 502 corresponding to the connecting part 1061, and a plurality of second hexagonal pull rivet nuts 600 are used to fix the upper cover 200, the sealing part 502 and the connecting part 1061 together.

[0041] Specifically, one end of the box body 100 is provided with a handle 107, which is convenient for carrying.

[0042] Specifically, the water inlet nozzle 101 has a water inlet 1011 connected with the accommodating cavity 103, and the water outlet nozzle 102 has a water outlet 1021 connected with the accommodating cavity 103.

[0043] In summary, the utility model discloses the structure design through above-mentioned, solve the deficiency in the prior art, have temperature control effect good, system safety is high and the advantages such as strong and durable.

[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An immersion liquid-cooled battery pack apparatus, characterized by: The utility model provides a battery box, including a box (100), an upper cover (200) and a battery module (300), the box (100) has a water inlet nozzle (101) and a water outlet nozzle (102), the box (100) has an open accommodating cavity (103), the upper cover (200) covers the opening, the accommodating cavity (103) bottom is provided with a bottom bracket (104), the battery module (300) is installed on the bottom bracket (104), the bottom bracket (104) is provided with a plurality of first through holes (1041) along the width direction.

2. The submerged liquid-cooled battery pack apparatus of claim 1, wherein: The first through hole (1041) is in the shape of a racetrack in cross section.

3. The submersible liquid-cooled battery pack apparatus of claim 2, wherein: The box (100) is provided with a plurality of first installation holes (105) on the opening periphery, the upper cover (200) is provided with a plurality of second installation holes (201) on the periphery, a first hexagonal rivet nut (400) is installed in the first installation hole (105) and the second installation hole (201) corresponding thereto, so that the box (100) and the upper cover (200) are fixed together.

4. The submersible liquid-cooled battery pack apparatus of claim 3, wherein: The box (100) is provided with a sealing ring (500) between the opening periphery and the upper cover (200), the sealing ring (500) is provided with a plurality of third installation holes (501) for the first hexagonal rivet nut (400) to pass through.

5. The submersible liquid-cooled battery pack apparatus of claim 4, wherein: Both ends of the bottom bracket (104) extend a convex rib (1042) to the bottom of the accommodating cavity (103), the convex rib (1042) is provided with a second through hole (1042a) along the width direction.

6. The submersible liquid-cooled battery pack apparatus of claim 5, wherein: The second through hole (1042a) is in the shape of a square in cross section.

7. The submersible liquid-cooled battery pack apparatus of claim 6, wherein: One end of the accommodating cavity (103) is provided with a partition plate (106), the partition plate (106) is provided with a connecting part (1061) near one end of the upper cover (200), the sealing ring (500) is provided with a sealing part (502) corresponding to the connecting part (1061), a plurality of second hexagonal rivet nuts (600) fix the upper cover (200), the sealing part (502) and the connecting part (1061) together.

8. The submersible liquid-cooled battery pack apparatus of claim 7, wherein: One end of the box (100) is provided with a handle (107).

9. The submersible liquid-cooled battery pack apparatus of claim 8, wherein: The water inlet nozzle (101) has a water inlet (1011) connected with the accommodating cavity (103), the water outlet nozzle (102) has a water outlet (1021) connected with the accommodating cavity (103).

10. The submersible liquid-cooled battery pack apparatus of claim 9, wherein: The height of the water outlet nozzle (102) is higher than the height of the water inlet nozzle (101).

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