Battery pack shell of liquid cooling box

Abstract

The utility model discloses a battery pack shell of a liquid cooling box, which comprises a hollow cavity structure formed by a battery box cover, a front panel and a cooling bottom plate, and bolt sealing interfaces are arranged at the joints of the battery box cover and the front panel and the cooling bottom plate; the cooling bottom plate comprises at least three splice plates attached to one another and pipeline connectors installed on two splice plates in the cooling bottom plate, inner cavities of the splice plates are provided with circulation cavities formed by dividing of ribs, and the two pipeline connectors are both communicated with the circulation cavities. According to the utility model, the comb-shaped cooling bottom plate hollow cavity structure is adopted, the circulation path of the cooling liquid on the cooling bottom plate is increased, the effect of improving the heat exchange efficiency is further realized, and the split splicing type cooling bottom plate structure is adopted, so that the cooling liquid flowing from top to bottom is difficult to enter the battery pack, and the anti-leakage effect of the battery pack is improved; and the size of the cooling bottom plate is adjustable, so that the cooling device is suitable for more batteries.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling box battery pack equipment, in particular to a liquid cooling box battery pack shell. Background Art

[0002] Battery packs often generate a lot of heat when working, and the battery itself has weak high temperature resistance. In order to install a large number of battery packs in the same place as energy storage equipment, battery box manufacturers usually install liquid cooling tubes and battery racks in the battery liquid cooling box. On the one hand, by adding coolant to the liquid cooling tubes, the battery can be cooled; on the other hand, multiple battery packs are arranged in order through the battery rack to maintain internal temperature balance.

[0003] Since each battery in the battery pack is connected to both the circuit structure and the pipe structure for the circulation of coolant, the battery pack needs to have good thermal conductivity and leakage prevention effects at the same time. Therefore, during installation, the installation steps for waterproof requirements will be more complicated;

[0004] On the other hand, the entire battery pack is a prefabricated part and cannot be adjusted according to the different sizes of the battery pack. The subsequent maintenance is also more troublesome, and the cooling pipes in the battery pack cannot be conveniently disassembled and assembled. Utility Model Content

[0005] The purpose of the utility model is to propose a liquid cooling box battery pack shell in order to solve the problem that the piping system in the battery pack is inconvenient to install, maintain and adjust according to the battery size.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquid cooling box battery pack housing, comprising a hollow cavity structure formed by a battery box cover, a front panel and a cooling bottom plate, wherein a bolt sealing interface is provided at the connection between the battery box cover, the front panel and the cooling bottom plate;

[0008] The cooling base plate includes at least three mutually fitted splicing plates and pipe interfaces installed on two splicing plates in the cooling base plate. The inner cavity of the splicing plate is provided with a flow cavity formed by ribs, and the two pipe interfaces are both connected to the flow cavity.

[0009] As a further description of the above technical solution:

[0010] The cooling bottom plate further comprises end cover baffles arranged at two parallel edges and lateral mounting bars arranged at the other two parallel edges, and the two end cover baffles and the two lateral mounting bars are interconnected to form four edges of the flow cavity.

[0011] As a further description of the above technical solution:

[0012] The ribs include long ribs and short ribs, gaps are arranged between both ends of the short ribs and the two end cover stoppers, one end of the long rib is connected to one end cover stopper, and a gap is arranged between the other end and the other end cover stopper.

[0013] As a further description of the above technical solution:

[0014] The long ribs, the short ribs and the lateral mounting strips are parallel to each other, and the lateral mounting strips and the end cover blocking strips are perpendicular to each other.

[0015] As a further description of the above technical solution:

[0016] At least three of the splicing plates are connected at a location where a protrusion and a recess are provided, and the protrusion and the recess are plugged in cooperation with each other.

[0017] As a further description of the above technical solution:

[0018] The lengths of the protrusion and the inner recess are equal to the length of the short ribs, and gaps are arranged between both ends of the protrusion and the inner recess and the two end cover stop bars.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In the utility model, a comb-shaped cooling base hollow cavity structure is adopted, which can lengthen the flow cavity length between two pipe interfaces in the cooling base, thereby increasing the flow path of the coolant in the cooling base, and further achieving the effect of increasing the heat exchange efficiency.

[0021] 2. In the utility model, a split-jointed cooling base plate structure is adopted. On the one hand, the cooling base plate is arranged at the bottom of the battery pack to reduce the possibility of the coolant flowing into the battery pack when the coolant leaks. At the same time, the door-shaped structure of the battery box cover makes it difficult for the coolant flowing from top to bottom to enter the battery pack, thereby increasing the anti-leakage effect of the battery pack. On the other hand, the size of the cooling base plate is adjustable, which is suitable for more types of batteries, and the disassembly, assembly and maintenance of the cooling base plate are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure schematic diagram provided according to the embodiment of the utility model is shown;

[0023] Figure 2 A schematic diagram of a horizontal cross-sectional structure provided according to an embodiment of the utility model is shown;

[0024] Figure 3A schematic diagram of a vertical cross-sectional structure at the center provided according to an embodiment of the utility model is shown;

[0025] Figure 4 A schematic diagram of a front vertical cross-sectional structure provided according to an embodiment of the utility model is shown;

[0026] Figure 5 The embodiment provided according to the utility model is shown Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 6 The embodiment provided according to the utility model is shown Figure 3 Enlarged structural diagram at B in the middle.

[0028] Legend:

[0029] 1. Battery box cover;

[0030] 2. Cooling bottom plate; 21. Splicing plate; 22. End cover stopper strip; 23. Lateral mounting strip; 24. Protrusion; 25. Inner recess; 26. Long rib; 27. Short rib; 28. Flow cavity; 29. ​​Pipeline interface;

[0031] 3. Front panel;

[0032] 4. Bolt seal interface. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-6 , the utility model provides a technical solution: a liquid cooling box battery pack shell, including a hollow cavity structure formed by a battery box cover 1, a front panel 3 and a cooling bottom plate 2, and a bolt sealing interface 4 is provided at the connection between the battery box cover 1 and the front panel 3 and the cooling bottom plate 2;

[0035] Among them, the hollow cavity structure formed by the battery box cover 1, the front panel 3 and the cooling bottom plate 2 is used to accommodate the battery and the internal circuit line structure, and the vertical section of the battery box cover 1 is a door frame structure, so that the battery and the circuit in the hollow cavity structure are shielded by the battery box cover 1. When the external cooling pipeline leaks, the coolant can be blocked by the structure of the battery box cover 1, reducing the possibility of the battery and the circuit in the hollow cavity structure being contaminated by the coolant; the front panel 3 is set to install the line interface of the battery, and the line interface is located below the bolt sealing interface 4 protruding from the battery box cover 1, so as to cover the line interface on the front panel 3 and reduce the possibility of the line interface being affected by leakage;

[0036] The cooling base plate 2 includes at least three splicing plates 21 that fit each other and pipe interfaces 29 installed on two splicing plates 21 in the cooling base plate 2. The inner cavity of the splicing plate 21 is provided with a flow cavity 28 formed by ribs. Both pipe interfaces 29 are connected to the flow cavity 28, so that the cooling liquid connected to the two pipe interfaces 29 can flow into the flow cavity 28 and take away the heat through the cooling liquid.

[0037] Among them, the cooling base plate 2 in the battery pack is arranged at the bottom, so that when the cooling base plate 2 has a coolant leakage failure, the coolant can flow downward by itself under the influence of gravity, reducing the possibility of the coolant flowing back into the battery pack. At the same time, the direct contact between the cooling base plate 2 and the internal battery is beneficial to increase the thermal conductivity efficiency.

[0038] Specifically, Figure 2 As shown, the cooling bottom plate 2 further includes end cover baffles 22 arranged at two parallel edges and lateral mounting bars 23 arranged at the other two parallel edges, the two end cover baffles 22 and the two lateral mounting bars 23 are connected to each other to form four edges of the flow cavity 28; the ribs include long ribs 26 and short ribs 27, gaps are arranged between both ends of the short ribs 27 and the two end cover baffles 22, one end of the long rib 26 is connected to one end cover baffle 22, and a gap is arranged between the other end and the other end cover baffle 22;

[0039] Among them, a plurality of long ribs 26 are arranged in an interlaced manner, and adjacent long ribs 26 are respectively connected to different end cover stoppers 22; a plurality of short ribs 27 are arranged in the gaps between the long ribs 26, forming a structure in which the long ribs 26 and the short ribs 27 are arranged in an interlaced manner, and the width of the flow cavity 28 is equal everywhere;

[0040] Among them, by setting the short ribs 27, the flow direction of the coolant in the cooling bottom plate 2 is restricted, and the width of the flow cavity 28 is reduced, which relatively increases the contact area between the cooling bottom plate 2 and the coolant, and at the same time increases the flow path of the coolant in the inner cavity of the cooling bottom plate 2, further improving the cooling efficiency;

[0041] At the same time, the long ribs 26 are arranged to prevent the coolant from flowing directly from one pipe interface 29 to another pipe interface 29 in a straight line in the cooling base plate 2 when the coolant flows in the inner cavity of the cooling base plate 2; instead, the coolant can flow through the gap between the long ribs 26 and the end cover baffles 22, and at the same time, multiple long ribs 26 are respectively connected to the two end cover baffles 22, so that the flow path length of the coolant flowing from one pipe interface 29 to another pipe interface 29 is increased, thereby increasing the heat exchange efficiency.

[0042] Specifically, Figure 2 As shown, the long ribs 26, the short ribs 27 and the lateral mounting strips 23 are parallel to each other, and the lateral mounting strips 23 and the end cover baffle strips 22 are perpendicular to each other. The parallel arrangement of the long ribs 26 and the short ribs 27 makes the overall width of the flow cavity 28 uniform and flush, thereby facilitating the circulation of the coolant.

[0043] Specifically, Figure 5-6 As shown, at least three splicing plates 21 are respectively provided with protrusions 24 and recesses 25 at their joints, and the protrusions 24 and recesses 25 are plugged in with each other; the lengths of the protrusions 24 and recesses 25 are equal to the lengths of the short ribs 27, and gaps are provided between the two ends of the protrusions 24 and recesses 25 and the two end cover stoppers 22;

[0044] Among them, the plug-in fit between the protrusion 24 and the recessed portion 25 can facilitate the convenient maintenance of the cooling base plate 2. When the cooling channel is blocked, maintenance can be quickly carried out by replacing the splicing plate 21. At the same time, the width range of the battery pack shell can be further adjusted by controlling the number of splicing plates 21 to suit different battery pack requirements.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid cooling box battery pack housing, characterized in that: It comprises a hollow cavity structure formed by a battery box cover (1), a front panel (3) and a cooling bottom plate (2), wherein a bolt sealing interface (4) is provided at the connection between the battery box cover (1), the front panel (3) and the cooling bottom plate (2); The cooling base plate (2) comprises at least three splicing plates (21) fitted together and pipe interfaces (29) installed on two splicing plates (21) in the cooling base plate (2); the inner cavity of the splicing plate (21) is provided with a flow cavity (28) formed by rib divisions; the two pipe interfaces (29) are both connected to the flow cavity (28).

2. The liquid cooling box battery pack housing according to claim 1, characterized in that: The cooling base plate (2) further comprises end cover baffles (22) arranged at two parallel edges and lateral mounting strips (23) arranged at another two parallel edges, wherein the two end cover baffles (22) and the two lateral mounting strips (23) are interconnected to form four edges of the flow cavity (28).

3. The liquid cooling box battery pack housing according to claim 2, characterized in that: The ribs include long ribs (26) and short ribs (27), gaps are provided between both ends of the short ribs (27) and the two end cover stoppers (22), one end of the long rib (26) is connected to one end cover stopper (22), and a gap is provided between the other end and the other end cover stopper (22).

4. The liquid cooling box battery pack housing according to claim 3, characterized in that: The long ribs (26), the short ribs (27) and the lateral mounting strips (23) are parallel to each other, and the lateral mounting strips (23) and the end cover blocking strips (22) are perpendicular to each other.

5. The liquid cooling box battery pack housing according to claim 4, characterized in that: At least three of the splicing plates (21) are connected at locations where there are protrusions (24) and recesses (25), respectively, and the protrusions (24) and recesses (25) are plugged in and out of the connection.

6. The liquid cooling box battery pack housing according to claim 5, characterized in that: The lengths of the protruding portion (24) and the inner recessed portion (25) are equal to the length of the short rib (27), and gaps are provided between the two ends of the protruding portion (24) and the inner recessed portion (25) and the two end cover stop bars (22).

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