PACK box made of stainless steel liquid cooling plate

Abstract

The utility model relates to the technical field of battery heat dissipation, in particular to a PACK box made of a stainless steel liquid cooling plate, which comprises a bottom plate, a box cover is fixedly connected to one side plate surface of the bottom plate, a cooling frame is fixedly connected to the other side plate surface of the bottom plate, a cooling plate is fixedly connected to the cooling frame, the cooling plate is made of a stainless steel plate, and the box cover is fixedly connected to the other side plate surface of the bottom plate. At least two cooling cavities are processed and formed in the cooling plate, the cooling plate is fixedly connected with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are respectively communicated with two ends of the cooling cavities, at least two groups of battery packs are arranged on the bottom plate and are in one-to-one correspondence with the cooling cavities, and the liquid inlet pipe and the liquid outlet pipe are communicated with the liquid inlet pipe and the liquid outlet pipe respectively. The battery pack is composed of a plurality of battery cells which are connected in series, aluminum connecting rows are connected among the battery cells, cast aluminum plates are arranged at two ends of the battery pack, and a steel belt is wound on the battery pack and the cast aluminum plates, so that the effects of reducing the temperature difference among the battery cells and improving the reliability of the battery cells are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery heat dissipation, in particular to a PACK box made of a stainless steel liquid cooling plate. BACKGROUND

[0002] Battery PACK generally refers to packaging, encapsulating and assembling battery cells to form a finished battery for actual use, and the battery PACK box is a box body for loading and fixing a battery pack. The energy storage cabinet is a device for storing electric energy and other energy, and is usually composed of batteries, capacitors, thermal energy storage media and the like, and realizes storage and release of energy through a control system.

[0003] A large amount of heat is generated during use of the energy storage cabinet, which affects the use of the energy storage cabinet and even causes safety hazards.

[0004] The prior art in the above has the following defects: when forced air cooling is used for heat dissipation, the air convection heat exchange coefficient is low, especially in a battery PACK with dense arrangement, large number of battery cells and large heat generation, the air cooling heat dissipation is difficult to meet the heat dissipation demand of the battery cells, and due to uneven factors such as air volume and air pressure, and different heat exchange areas between different battery cells and air, the temperature consistency between the battery cells is poor, thereby affecting the use safety of the battery pack. CONTENT OF THE INVENTION

[0005] The application provides a PACK box made of a stainless steel liquid cooling plate to reduce the temperature difference between battery cells and improve the reliability of the battery cells.

[0006] The above technical purpose of the application is achieved through the following technical scheme:

[0007] The PACK box made of a stainless steel liquid cooling plate comprises a bottom plate, a box cover fixed on one side plate surface of the bottom plate, a cooling frame fixed on the other side plate surface of the bottom plate, a cooling plate fixed on the cooling frame, wherein the cooling plate is a stainless steel plate, a cooling cavity is formed in the cooling plate, at least two cooling cavities are arranged in a snake shape, a liquid inlet pipe and a liquid outlet pipe are fixed on the cooling plate, the liquid inlet pipe and the liquid outlet pipe are respectively communicated with two ends of the cooling cavity, a battery pack is arranged on the bottom plate, the battery pack is provided with at least two groups and corresponds to the cooling cavity one by one, the battery pack is composed of a plurality of series-connected battery cells, an aluminum connecting row is connected between the battery cells, cast aluminum plates are arranged at two ends of the battery pack, the battery pack and the cast aluminum plates are jointly wound with a steel belt, a mounting plate is fixed on the bottom plate, and a control device, a communication assembly and a fire-fighting assembly are mounted on the mounting plate.

[0008] By adopting the above technical scheme, the cooling medium enters the cooling cavity of the liquid cooling plate from the liquid inlet pipe, the cooling cavity below the battery pack can make the cooling medium fully absorb heat during the flow process, increase the heat dissipation efficiency of the battery pack, improve the heat dissipation effect of the PACK box, the cooling medium flows out from the liquid outlet pipe at the other end of the cooling cavity, forms a closed one-way liquid cooling circulation, guarantees the safety and stability of the battery pack operation, the bottom of the cooling plate is located in the cooling frame, which can guarantee the safety and stability of the work of the cooling plate, and at the same time, the cooling cavity of the cooling plate is located below the battery pack, which guarantees the cooling efficiency of the cooling plate, the cooling plate made of stainless steel has the characteristics of corrosion resistance, which can guarantee the safety and stability of the work of the cooling plate, reduce the temperature difference between the battery cells, and improve the reliability of the battery cells.

[0009] Optionally, the aluminum connecting row is formed with a protruding part.

[0010] By adopting the above technical scheme, the top of the battery pack is away from the box cover, a gap is generated between the battery pack and the insulating cover plate, which is beneficial to the heat dissipation of the battery pack and facilitates the connection of the lines between the battery cells.

[0011] Optionally, the liquid inlet pipe and the liquid outlet pipe are each provided with at least two, and a quick connector seat for connecting a quick connector is fixed on the liquid inlet pipe and the liquid outlet pipe.

[0012] By adopting the above technical scheme, two liquid inlet pipes and two liquid outlet pipes can increase the flow of the cooling medium, and the quick connector seats on the liquid inlet pipe and the liquid outlet pipe facilitate the connection of the pipeline of the cooling medium.

[0013] Optionally, a sealing gasket is arranged on the bottom plate and located between the bottom plate and the box cover.

[0014] By adopting the above technical scheme, the risk of damage caused by gas or liquid leakage of the PACK box can be reduced, and the stability and safety of the PACK box can be improved.

[0015] Optionally, the bottom plate is fixedly connected with a fixing plate, the fixing plate is provided with at least two fixing plates respectively located at two ends of the battery pack, and the cast aluminum plate is provided with an insertion plate, which is located between the battery pack and the fixing plate.

[0016] By adopting the above technical scheme, the stability of the battery pack fixed in the PACK box can be improved, the overall structural strength of the PACK box can be improved, the insertion plate at the bottom of the cast aluminum plate can make the battery cell away from the fixing plate, and the working safety and stability of the battery pack can be ensured.

[0017] Optionally, the cast aluminum plate is provided with a fixing block, the fixing block is provided with an insertion block, and one end of the insertion block is inserted into the box cover.

[0018] By adopting the above technical scheme, the insertion block on the fixing block is inserted into the box cover, the stability of the box cover installation can be improved, the stability of the battery pack fixation can be improved, the overall structural strength of the PACK box can be improved, the insertion block is clamped in the box cover, and the installation and maintenance of the PACK box are facilitated.

[0019] Optionally, the cast aluminum plate is provided with a strip-shaped groove matched with the steel belt.

[0020] By adopting the above technical scheme, the strip-shaped groove can make the steel belt embedded in the cast aluminum plate, the stability of the battery cell fixed by the steel belt can be improved, the safety and stability of the battery pack can be improved, the stable connection between the battery cells of the battery pack can be ensured, and the overall structural strength of the battery pack can be improved.

[0021] Optionally, the bottom plate is provided with a bending part, the plate surface of the bending part is attached to the side wall of the cooling frame, and the cooling frame is fixedly connected with a support plate.

[0022] By adopting the above technical scheme, the connection stability between the bottom plate and the cooling frame can be improved, the support plate can make the cooling cavity of the cooling plate away from the bottom of the PACK box, and the safety and stability of the cooling plate can be ensured.

[0023] In summary, the application has the following technical effects:

[0024] 1. By arranging the cooling frame and the cooling plate, the heat dissipation efficiency of the battery pack is improved, the heat dissipation effect of the PACK box is improved, the cooling medium flows out from the liquid outlet pipe at the other end of the cooling cavity, a closed one-way liquid cooling circulation is formed, the safety and stability of the battery pack during operation are ensured, the bottom of the cooling plate is located in the cooling frame, the safety and stability of the cooling plate during operation are ensured, the cooling cavity of the cooling plate is located below the battery pack, the cooling efficiency of the cooling plate is ensured, the temperature difference between the battery cells is reduced, and the reliability of the battery cells is improved.

[0025] 2. By setting the fixed plate and the plug plate, the stability of the battery pack in the PACK box can be increased, and the overall structural strength of the PACK box is increased. The plug plate at the bottom of the cast aluminum plate can make the battery cell away from the fixed plate, ensuring the safety and stability of the battery pack.

[0026] 3. By setting the strip-shaped groove, the steel strip can be embedded in the cast aluminum plate, increasing the stability of the steel strip to the battery cell, improving the safety and stability of the battery pack, ensuring the stable connection between the battery cells of the battery pack, and increasing the overall structural strength of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the outer shape structure diagram of the present application;

[0028] Figure 2 is another angle structure diagram of the present application after opening;

[0029] Figure 3 is the prominent structure diagram of the battery pack of the present application;

[0030] Figure 4 is the prominent structure diagram of the cast aluminum plate, the fixed block and the plug block of the present application.

[0031] BRIEF DESCRIPTION OF DRAWINGS 1. bottom plate; 11, box cover; 12, sealing gasket; 13, fixed plate; 14, mounting plate; 2, cooling frame; 21, support plate; 22, cooling plate; 23, liquid inlet pipe; 24, liquid outlet pipe; 3, battery pack; 31, battery cell; 32, insulating cover plate; 33, aluminum continuous row; 34, cast aluminum plate; 341, strip-shaped groove; 342, plug plate; 35, steel strip; 4, fixed block; 41, plug block. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] The present application discloses a PACK box made of stainless steel liquid cooling plate, referring to Figure 1 and Figure 2The PACK box comprises a bottom plate 1, a box cover 11 is fixed on one side of the bottom plate 1 by bolts, a sealing gasket 12 is arranged between the box cover 11 and the bottom plate 1, the sealing gasket 12 can reduce the risk of damage caused by gas or liquid leakage of the PACK box, and improve the stability and safety of the PACK box. The edges of the bottom plate 1 on the length direction are bent to form bent portions on the side of the bottom plate 1 away from the box cover 11, a plurality of fixing holes for bolts are arranged on the bent portions of the bottom plate 1 along the length direction, a cooling frame 2 is fixed on one side of the bottom plate 1 by bolts, the side walls on the length direction of the cooling frame 2 are attached to the side walls on the side of the bent portions of the bottom plate 1, the cooling frame 2 is made of channel steel and the groove direction is towards the inside of the cooling frame 2, a support plate 21 is fixed on the cooling frame 2 by bolts, three support plates 21 are arranged along the length direction of the cooling frame 2, and the length direction ends of the support plates 21 are respectively inserted into the grooves on the length direction sides of the cooling frame 2.

[0034] Referring to Figure 1 and Figure 2 , the cooling frame 2 is fixed on the side of the bottom plate 1 by bolts, the cooling plate 22 is located between the bottom plate 1 and the cooling frame 2, the cooling plate 22 is made of stainless steel sheet, the cooling cavity for the flow of cooling medium is formed in the cooling plate 22, four cooling cavities are arranged in a snakelike manner along the length direction of the cooling plate 22, the liquid inlet pipe 23 is welded on the end of the cooling plate 22 towards the bottom plate 1, the end of the liquid inlet pipe 23 away from the cooling plate 22 penetrates through the bottom plate 1, the liquid inlet pipe 23 is provided with two and is communicated with one end of the cooling cavity, the liquid outlet pipe 24 is welded on the end of the cooling plate 22 towards the bottom plate 1, the end of the liquid outlet pipe 24 away from the cooling plate 22 penetrates through the bottom plate 1, the liquid inlet pipe 23 is provided with two and is communicated with the end of the cooling cavity away from the liquid inlet pipe 23, the liquid inlet pipe 23 and the liquid outlet pipe 24 are welded with quick-connection seats for quick connectors.

[0035] Referring to Figure 3 , the bottom plate 1 is provided with a battery pack 3, four groups of battery packs 3 are arranged along the width direction of the bottom plate 1, the four groups of battery packs 3 are respectively located above the four cooling cavities, the battery pack 3 is composed of a plurality of series-connected battery cells 31, the top and bottom of the battery pack 3 are provided with insulating cover plates 32, the four insulating cover plates 32 are provided with a top plate, the aluminum busbar 33 is connected between the positive and negative poles of the two adjacent battery cells 31, the plate surface of the aluminum busbar 33 is formed with a protruding portion, the protruding portion of the aluminum busbar 33 is attached to the insulating cover plate 32 on the top of the battery pack 3, the protruding portion of the aluminum busbar 33 can make the top of the battery pack 3 away from the box cover 11, so that a gap is generated between the battery pack 3 and the insulating cover plate 32, which is beneficial to the heat dissipation of the battery pack 3 and facilitates the connection of the lines between the battery cells 31.

[0036] Referring to Figure 3 and Figure 4, the two insulating plates are provided with cast aluminum plates 34 on the side away from each other, the side wall of the battery pack 3 is provided with a steel belt 35 along the length direction of the battery pack 3, the steel belt 35 is provided with two strips along the height direction of the battery pack 3, the side of the cast aluminum plate 34 away from the battery cell 31 is provided with a strip-shaped groove 341 for embedding the steel belt 35, and the strip-shaped groove 341 is provided with two strips corresponding to the two steel belts 35.

[0037] The strip-shaped groove 341 provided on the cast aluminum plate 34 can embed the steel belt 35 in the cast aluminum plate 34, increase the stability of the steel belt 35 fixing the battery cell 31, improve the safety and stability of the battery pack 3, ensure the stable connection between the battery cells 31 of the battery pack 3, and increase the overall structural strength of the battery pack 3.

[0038] The bending part of the bottom plate 1 can increase the stability of the connection between the bottom plate 1 and the cooling frame 2, the bottom of the cooling plate 22 is located in the cooling frame 2, which can ensure the safety and stability of the working of the cooling plate 22, and at the same time ensure that the cooling cavity of the cooling plate 22 is located below the battery pack 3, which can ensure the heat dissipation efficiency of the cooling plate 22, and the supporting plate 21 can make the cooling cavity of the cooling plate 22 away from the bottom of the PACK box, which can ensure the safety and stability of the working of the cooling plate 22.

[0039] Referring to Figure 3 and Figure 4 , the bottom plate 1 is welded with a fixed plate 13, the fixed plate 13 is a strip-shaped plate and is provided along the width direction of the bottom plate 1, the fixed plate 13 is located on the side of the cast aluminum plate 34 facing the bottom plate 1 and is fixed to the bottom of the cast aluminum plate 34 by bolts, the bottom of the cast aluminum plate 34 is processed to form an insertion plate 342, the two side surfaces of the insertion plate 342 are respectively attached to the side surfaces of the fixed plate 13 and the insulating plate, the cast aluminum plate 34 is inserted with a fixed block 4, the fixed block 4 is fixed with an aluminum row connecting the positive or negative poles of the battery cells 31 at both ends of the battery pack 3 by bolts, the fixed block 4 is processed to form an insertion block 41, the insertion block 41 is provided with two along the length direction of the fixed block 4 and is respectively located on both sides of the length direction of the aluminum row, and the end of the insertion block 41 away from the fixed block 4 is inserted into and clamped in the box cover 11.

[0040] The fixed plate 13 can increase the stability of the fixation of the battery pack 3 in the PACK box, and at the same time increase the overall structural strength of the PACK box, the insertion plate 342 at the bottom of the cast aluminum plate 34 can make the battery cell 31 away from the fixed plate 13, which can ensure the safety and stability of the working of the battery pack 3, the insertion block 42 on the fixed block 4 is inserted into the box cover 11, which can increase the stability of the installation of the box cover 11, at the same time increase the stability of the fixation of the battery pack 3, and increase the overall structural strength of the PACK box, the insertion block 42 is clamped in the box cover 11, which is convenient for the installation and maintenance of the PACK box.

[0041] Referring to Figure 2 and Figure 3The bottom plate 1 is fixed with a mounting plate 14 near the liquid inlet pipe 23 by bolts, the mounting plate 14 is located in the box cover 11, and the control assembly, the communication assembly and the fire-fighting assembly are mounted on the mounting plate 14.

[0042] When the PACK box is used, the cooling medium enters the cooling cavity of the liquid cooling plate from the liquid inlet pipe 23, the cooling cavity below the battery pack 3 can make the cooling medium fully absorb heat during the flow process, increase the heat dissipation efficiency of the battery pack 3, improve the heat dissipation effect of the PACK box, the cooling medium flows out from the liquid outlet pipe 24 at the other end of the cooling cavity, forms a closed one-way liquid cooling cycle, guarantees the safety and stability of the operation of the battery pack 3, the two liquid inlet pipes 23 and the two liquid outlet pipes 24 can increase the flow of the cooling medium, the quick connector on the liquid inlet pipe 23 and the liquid outlet pipe 24 is convenient for connecting the pipeline of the cooling medium, the cooling plate 22 made of stainless steel has the characteristics of corrosion resistance, can guarantee the safety and stability of the work of the cooling plate 22, reduce the temperature difference between the battery cells 31, and improve the reliability of the battery cells 31.

[0043] The specific embodiment is only an explanation of the application, and is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as the scope of the claims of the application is within the scope of the patent law.

Claims

1. A PACK box made of stainless steel liquid-cooled plate, characterized in that: The system includes a base plate (1), a cover (11) fixedly attached to one side of the base plate (1), and a cooling rack (2) fixedly attached to the other side of the base plate (1). A cooling plate (22) is fixedly attached to the cooling rack (2). The cooling plate (22) is made of stainless steel and has a cooling cavity formed inside. There are at least two cooling cavities arranged in a serpentine pattern. An inlet pipe (23) and an outlet pipe (24) are fixedly attached to the cooling plate (22). The inlet pipe (23) and the outlet pipe (24) are respectively connected to the cooling cavity. At both ends, a battery pack (3) is provided on the base plate (1). The battery pack (3) has at least two sets and corresponds one-to-one with the cooling chamber. The battery pack (3) is composed of multiple cells (31) connected in series. The cells (31) are connected by aluminum busbars (33). Both ends of the battery pack (3) are provided with cast aluminum plates (34). The battery pack (3) and the cast aluminum plates (34) are wrapped with steel strips (35). A mounting plate (14) is fixed on the base plate (1). The mounting plate (14) is equipped with control devices, communication components and fire-fighting components.

2. The PACK box made of stainless steel liquid-cooled plate according to claim 1, characterized in that: The aluminum busbar (33) has protrusions formed on it.

3. A PACK box made of stainless steel liquid-cooled plate according to claim 2, characterized in that: At least two inlet pipes (23) and two outlet pipes (24) are provided, and quick-connect fittings for quick-connect couplings are fixedly connected to both inlet pipes (23) and outlet pipes (24).

4. A PACK box made of stainless steel liquid-cooled plate according to claim 3, characterized in that: A sealing gasket (12) is provided on the base plate (1), and the sealing gasket (12) is located between the base plate (1) and the box cover (11).

5. A PACK box made of stainless steel liquid-cooled plate according to claim 4, characterized in that: A fixing plate (13) is fixedly connected to the base plate (1). At least two fixing plates (13) are provided and are located at both ends of the battery pack (3). An insert plate (342) is formed on the cast aluminum plate (34) and is located between the battery pack (3) and the fixing plate (13).

6. A PACK box made of stainless steel liquid-cooled plate according to claim 1, characterized in that: A fixing block (4) is inserted into the cast aluminum plate (34), and an insert (41) is formed on the fixing block (4). One end of the insert (41) is inserted into the box cover (11).

7. A PACK box made of stainless steel liquid-cooled plate according to claim 6, characterized in that: The cast aluminum plate (34) is machined with a strip groove (341) that matches the steel strip (35).

8. A PACK box made of stainless steel liquid-cooled plate according to claim 7, characterized in that: The base plate (1) is processed to form a bent part, and the plate surface of the bent part is attached to the side wall of the cooling rack (2). A support plate (21) is fixed inside the cooling rack (2).

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