High-protection liquid-cooled battery pack

Abstract

The utility model discloses a high-protection liquid-cooled battery pack. An outer folding edge is arranged at the bottom of a battery box body; a cavity is formed in the liquid cooling bottom plate, a plurality of supporting vertical plates are arranged in the liquid cooling bottom plate, the cavity in the liquid cooling bottom plate forms a flow channel through the supporting vertical plates, a connecting frame is arranged on the periphery of the liquid cooling bottom plate, and the outer folding edge of the battery box body is fixedly connected with the connecting frame through bolts. The top of the supporting vertical plate is matched and clamped with a groove in the lower surface of the top of the upper cover, the bottom of the supporting vertical plate is matched and clamped with a groove in the upper surface of the lower plate body, the supporting vertical plate enables a flow channel to be formed in the liquid cooling bottom plate, meanwhile, the supporting strength of the liquid cooling bottom plate is greatly improved, and it is guaranteed that the liquid cooling bottom plate is not prone to deformation; the bottom of the battery fixing frame is connected with the connecting frame through bolts and is located in the battery box body, and the connecting frame is arranged on the periphery of the liquid cooling bottom plate, so that the protection performance of the battery pack and the liquid cooling bottom plate is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a high-protection liquid-cooled battery pack. Background Art

[0002] Currently, in certain environments, the heat dissipation of air-cooled battery packs cannot meet the heat dissipation requirements of current energy storage systems. Furthermore, air cooling is significantly affected by ambient air temperature, particularly in overheated or overcold weather conditions, where heat transfer efficiency drops dramatically. Furthermore, heat accumulates within the battery pack. If the generated heat cannot be removed from the pack promptly, overheating can endanger the battery life. Therefore, liquid-cooled battery packs are also currently available, using coolant for cooling.

[0003] The cooling tubes of existing liquid-cooled battery packs are generally located at the bottom of the battery pack. When the cooling tubes at the bottom of the current liquid-cooled battery pack are installed in the support plate, their support is poor and they are prone to denting and deformation during long-term use, which may lead to rupture of the cooling tubes. In addition, the cooling part lacks protection and is easily damaged. Therefore, an improved technology is urgently needed to solve this problem existing in the existing technology. Utility Model Content

[0004] The purpose of the present utility model is to provide a highly protected liquid-cooled battery pack, in which the top of the support vertical plate is engaged with the groove on the lower surface of the top of the upper cover, and the bottom of the support vertical plate is engaged with the groove on the upper surface of the lower plate body. The support vertical plate not only forms a flow channel inside the liquid-cooled bottom plate, but also greatly improves the supporting strength of the liquid-cooled bottom plate, ensuring that the liquid-cooled bottom plate is not easily deformed. The bottom of the battery fixing frame is connected to the connecting frame by bolts and is located inside the battery box. A connecting frame is provided on the periphery of the liquid-cooled bottom plate, thereby greatly improving the protection of the battery pack and the liquid-cooled bottom plate, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-protection liquid-cooled battery pack, comprising a battery box and a liquid-cooling assembly;

[0006] The bottom of the battery box is provided with an outer folding edge;

[0007] The liquid cooling assembly includes a liquid cooling base plate and a connecting frame. A cavity is provided inside the liquid cooling base plate. A plurality of supporting vertical plates are provided inside the liquid cooling base plate. The cavity inside the liquid cooling base plate forms a flow channel through the supporting vertical plates. A connecting frame is provided on the periphery of the liquid cooling base plate. The outer folded edge of the battery box is fastened to the connecting frame by bolts. One end of the liquid cooling base plate extends to the outside of the connecting frame and is provided with a water inlet and a water outlet. A plurality of batteries are evenly arranged inside the battery box through a battery fixing frame. The bottom of the battery fixing frame is connected to the inner wall of the connecting frame by bolts. The bottom of the battery is supported on the upper surface of the liquid cooling base plate. The bottom of the battery is tightly connected to the upper surface of the liquid cooling base plate and coated with thermal conductive gel.

[0008] The liquid-cooled base plate includes an upper cover and a lower plate. A groove is provided on the lower surface of the top of the upper cover. A battery module management unit is also provided inside the battery box. The battery module management unit is supported on the upper surface of the liquid-cooled base plate. The battery is connected to the battery module management unit through a communication harness.

[0009] Preferably, the utility model provides a high-protection liquid-cooled battery pack, wherein a plurality of battery modules are evenly arranged inside the battery box cover through a bracket, and a battery module management unit is also provided inside the battery box cover, and the battery modules and the battery module management unit are both supported on the upper surface of the base plate, and the battery modules are connected to the battery module management unit through a communication harness.

[0010] Preferably, the utility model provides a high-protection liquid-cooled battery pack, wherein a communication interface and a power interface are provided at one end of the battery box, and the communication interface and the power interface are connected to the battery module management unit through a communication harness.

[0011] Preferably, the utility model provides a high-protection liquid-cooled battery pack, wherein a plurality of lifting ears and fixing parts are connected to both sides of the outer folding edge.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The liquid cooling base plate is connected to the battery box through a connecting frame. The lower surface of the battery is in close contact with the upper surface of the liquid cooling base plate. A supporting plate is provided inside the liquid cooling base plate and a flow channel is formed through the supporting plate to realize cooling of the battery in the battery box, thereby ensuring the service life of the battery pack. At the same time, the liquid cooling base plate is composed of an upper cover and a lower plate. The top of the supporting plate is engaged with the groove on the lower surface of the top of the upper cover, and the bottom of the supporting plate is engaged with the groove on the upper surface of the lower plate. The supporting plate not only forms a flow channel inside the liquid cooling base plate, but also greatly improves the supporting strength of the liquid cooling base plate, ensuring that the liquid cooling base plate is not easily deformed.

[0014] (2) The outer folded edge of the battery box is fastened to the connecting frame by bolts, thereby facilitating the connection and separation of the battery box and the liquid cooling assembly.

[0015] (3) The bottom of the battery fixing frame is connected to the connecting frame by bolts and is located inside the battery box. A connecting frame is provided on the periphery of the liquid cooling base plate, thereby greatly improving the protection of the battery pack and the liquid cooling base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 2 This is a side view structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the liquid cooling component from a top view;

[0020] Figure 5 This is a schematic diagram of the side cross-sectional structure of the liquid cooling base plate;

[0021] Figure 6 Schematic diagram of the upper cover structure;

[0022] Figure 7 Schematic diagram of the lower plate structure.

[0023] In the figure: battery box 1, outer folding edge 2, liquid cooling base plate 3, connecting frame 4, supporting vertical plate 5, water inlet 6, water outlet 7, battery fixing frame 8, battery 9, battery module management unit 10, communication interface 11, power interface 12, lifting ear 13, fixing part 14, upper cover 301, lower plate 302, groove 303. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0025] It should be noted that, in the description of the present invention, the terms "inside", "outside", "up", "down", "both sides", "one end", "the other end", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0026] See also Figure 1-7 , the utility model provides a technical solution: a high-protection liquid-cooled battery pack, including a battery box 1 and a liquid-cooling component;

[0027] The bottom of the battery box 1 is provided with an outer folding edge 2, and a plurality of lifting ears 13 and fixing members 14 are connected on both sides of the outer folding edge 2. The lifting ears 13 are used for easy transportation, and the fixing members 14 are used for easy connection and fixing with the cabinet.

[0028] The liquid cooling assembly includes a liquid cooling base plate 3 and a connecting frame 4. A cavity is provided inside the liquid cooling base plate 3. Several supporting vertical plates 5 are provided inside the liquid cooling base plate 3. The cavity inside the liquid cooling base plate 3 forms a flow channel through the supporting vertical plates 5. A connecting frame 4 is provided on the periphery of the liquid cooling base plate 3. The outer folding edge 2 of the battery box 1 is fastened to the connecting frame 4 by bolts. One end of the liquid cooling base plate 3 extends to the outside of the connecting frame 4 and is provided with a water inlet 6 and a water outlet 7. The liquid cooling base plate 3 is made of aluminum alloy and is provided with a flow channel inside. Liquid is injected through the water inlet 6 and heat is discharged through the water outlet 7. The exposed surface is sprayed with an insulation layer to prevent condensation of the liquid cooling plate to ensure effective heat dissipation of the battery module. Several batteries 9 are evenly arranged inside the battery box 1 through a battery fixing frame 8. The battery fixing frame The bottom of 8 is connected to the inner wall of the connecting frame 4 by bolts, the bottom of the battery 9 is supported on the upper surface of the liquid-cooled base plate 3, the bottom of the battery 9 is tightly connected to the upper surface of the liquid-cooled base plate 3 and coated with thermal conductive gel, and a battery module management unit 10 is also provided inside the battery box 1. The battery module management unit 10 is supported on the upper surface of the liquid-cooled base plate 3, and the battery 9 is connected to the battery module management unit 10 through a communication harness. A communication interface 11 and a power interface 12 are provided at one end of the battery box 1. The communication interface 11 and the power interface 12 are connected to the battery module management unit 10 through a communication harness. The communication harness uploads the voltage and temperature of the battery pack to the battery module management unit, and connects the communication end and the output end respectively through the communication interface 11 and the power interface 12;

[0029] like Figure 5-7As shown, the liquid cooling base plate 3 includes an upper cover 301 and a lower plate body 302. A groove 303 is provided on the lower surface of the top of the upper cover 301, and a groove 303 is provided on the upper surface inside the lower plate body 302. The top of the support vertical plate 5 is engaged with the groove 303 on the lower surface of the top of the upper cover 301, and the bottom of the support vertical plate 5 is engaged with the groove 303 on the upper surface of the lower plate body 302. The lower plate body 302 is welded to the bottom of the upper cover 301.

[0030] Installation method and usage principle: First assemble the liquid cooling assembly, apply sealant to the groove 303 of the upper cover 301, and insert the top of the supporting vertical plate 5 into the groove 303 of the upper cover 301, then apply sealant to the groove 303 of the lower plate 302, and connect the lower plate 302 to the upper cover 301, and at the same time insert the bottom of the supporting vertical plate 5 into the groove 303 of the lower plate 302. After pressing with a press, weld the connection between the lower plate 302 and the upper cover 301 to obtain a liquid cooling base plate 3 with a flow channel inside, and weld the water inlet 6 and the water outlet 7 to the extended part of the liquid cooling base plate 3, and then weld the connecting frame 4 to the outside of the liquid cooling base plate 3. Bolt the bottom of the battery holder 8 to the connecting frame 4. Evenly apply thermal conductive gel to the upper surface of the upper cover 301 of the liquid-cooled baseplate 3. Place the battery 9 on the upper surface of the liquid-cooled baseplate 3 via the battery holder 8. At this point, the bottom of the battery 9 is in close contact with the upper cover 301. Install the battery module management unit 10 on the upper surface of the liquid-cooled baseplate 3 via the bracket and connect the wires. Slide the battery case 1 over the outside of the battery 9 and align the outer fold 2 of the battery case 1 with the holes of the connecting frame 4. At the same time, place the lugs 13 in the corresponding positions on both sides of the outer fold 2. Use bolts to fasten the outer fold 2 to the connecting frame 4. At the same time, install the lugs 13 in the corresponding positions to complete the installation. During use, the water inlet 6 and water outlet 7 are connected to the circulating water inlet and outlet pipes, respectively. Cooling water enters the liquid-cooled baseplate 3 from the water inlet 6 and flows out from the water outlet 7 through the flow channel, thereby exchanging heat with the battery 9 and achieving the purpose of cooling the battery 9. The utility model has a reasonable structure. The liquid cooling base plate 3 is connected to the battery box 1 through the connecting frame 4. The lower surface of the battery 9 is in close contact with the upper surface of the liquid cooling base plate 3. A support vertical plate 5 is provided inside the liquid cooling base plate 3 and a flow channel is formed by the support vertical plate 5 to realize the cooling of the battery 9 in the battery box 1, thereby ensuring the service life of the battery pack. At the same time, the liquid cooling base plate 3 is composed of an upper cover 301 and a lower plate 302. The top of the support vertical plate 5 is engaged with the groove 303 on the lower surface of the top of the upper cover 301. The bottom of the support vertical plate 5 is engaged with the upper surface of the lower plate 302. The groove 303 cooperates with the snap-fitting, and the supporting vertical plate 5 not only forms a flow channel inside the liquid-cooling base plate 3, but also greatly improves the supporting strength of the liquid-cooling base plate 3, ensuring that the liquid-cooling base plate 3 is not easily deformed; the outer folding edge 2 of the battery box 1 is fastened to the connecting frame 4 by bolts, thereby facilitating the connection and separation of the battery box 1 and the liquid-cooling assembly; the bottom of the battery fixing frame 8 is connected to the connecting frame 4 by bolts and is located inside the battery box 1, and a connecting frame 4 is provided on the periphery of the liquid-cooling base plate 3, thereby greatly improving the protection of the battery pack and the liquid-cooling base plate 3.

[0031] Anything not described in detail in the present invention is well known to those skilled in the art.

[0032] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high-protection liquid-cooled battery pack, characterized by: It comprises a battery box (1) and a liquid cooling component; The bottom of the battery box (1) is provided with an outer folding edge (2); The liquid cooling assembly comprises a liquid cooling base plate (3) and a connecting frame (4); a cavity is provided inside the liquid cooling base plate (3); a plurality of supporting vertical plates (5) are provided inside the liquid cooling base plate (3); a flow channel is formed in the cavity inside the liquid cooling base plate (3) through the supporting vertical plates (5); a connecting frame (4) is provided on the periphery of the liquid cooling base plate (3); an outer folding edge (2) of the battery box (1) is fastened to the connecting frame (4) by bolts; one end of the liquid cooling base plate (3) extends to the outside of the connecting frame (4) and is provided with a water inlet (6) and a water outlet (7); a plurality of batteries (9) are evenly arranged inside the battery box (1) through a battery fixing frame (8); the bottom of the battery fixing frame (8) is connected to the inner wall of the connecting frame (4) by bolts; the bottom of the battery (9) is supported on the upper surface of the liquid cooling base plate (3); the bottom of the battery (9) is tightly connected to the upper surface of the liquid cooling base plate (3) and is coated with thermal conductive gel; The liquid cooling base plate (3) includes an upper cover (301) and a lower plate body (302), the lower surface of the top of the upper cover (301) is provided with a groove (303), the upper surface inside the lower plate body (302) is provided with a groove (303), the top of the supporting vertical plate (5) is engaged with the groove (303) on the lower surface of the top of the upper cover (301), the bottom of the supporting vertical plate (5) is engaged with the groove (303) on the upper surface of the lower plate body (302), and the lower plate body (302) is welded to the bottom of the upper cover (301).

2. The high-protection liquid-cooled battery pack according to claim 1, characterized in that: A battery module management unit (10) is also provided inside the battery box (1), the battery module management unit (10) is supported on the upper surface of the liquid cooling base plate (3), and the battery (9) is connected to the battery module management unit (10) via a communication harness.

3. The high-protection liquid-cooled battery pack according to claim 1, characterized in that: A communication interface (11) and a power interface (12) are provided at one end of the battery box (1); the communication interface (11) and the power interface (12) are connected to the battery module management unit (10) via a communication harness.

4. The high-protection liquid-cooled battery pack according to claim 1, characterized in that: A plurality of lifting ears (13) and fixing parts (14) are also connected to both sides of the outer folding edge (2).

Images