A vibration-resistant and lengthened stamping cold plate bottom bracket

Abstract

The utility model discloses a vibration-resistant and lengthened stamped cold plate base support, wherein an adapted cold plate is arranged on an integrally formed thin cold plate base support; a plurality of long strip-shaped convex bumps are arranged in parallel on the cold plate base support; a plurality of convex points are arranged on each convex bump, and the convex points form an array structure. The sheet metal bracket and the sheet metal frame are connected and fixed to the cold plate and the cold plate base support; the connecting member fixes the frame, the cold plate and the cold plate base support. The present application solves the problems of insufficient structural strength of the stamped cold plate and low cooling efficiency due to the thick thickness of the cold plate, and provides a cold plate base support with vibration resistance and high cooling efficiency. When vibrating, because the cold plate contacts more supporting points, the connecting member also increases the force-bearing area, so that the pressure at each location is roughly the same, so that the cold plate is not easily deformed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing, and in particular relates to a vibration-resistant and lengthened stamping cold plate bottom bracket. Background Art

[0002] At present, in order to ensure sufficient structural strength, the existing cold plate uses materials of 2.5mm or above to support the battery module. As shown in patent CN202221893088.0, the water-cooled plate body is provided with a first reinforcing rib and a second reinforcing rib, and the first reinforcing rib and the second reinforcing rib are both located on the back of the water-cooled plate body, and the first reinforcing rib and the second reinforcing rib are arranged in parallel, and the first reinforcing rib and the second reinforcing rib are both located at the edge of the water-cooled plate body. The water-cooled plate body is also provided with a first bracket and a second bracket, and the first bracket and the second bracket are both located on the front of the water-cooled plate body, and the first bracket is located on one side of the second bracket. However, the overall structural strength is insufficient, and the thickness of the cold plate is relatively thick. The utility model solves the above problems. Utility Model Content

[0003] In view of the problems in the prior art that the cold plate has insufficient structural strength and is relatively thick, the purpose of the utility model is to provide a power battery pack box structure with sufficient structural strength, a thin cold plate and good anti-vibration effect.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows: an integrally formed thin cold plate base, an adapted cold plate is arranged inside the cold plate base; a sheet metal bracket and a sheet metal frame are fixed on the cold plate base; a plurality of long strip convex hulls are arranged in parallel on the cold plate base; a plurality of convex points are arranged on each convex hull, and the convex points form an array structure. The integrally formed cold plate base is easy to produce and can be mass-produced; the cold plate base is fixed with a sheet metal frame on all sides, and the middle part is reinforced by a sheet metal bracket, so that the overall structural strength of the device can be ensured while the thickness of the cold plate base is relatively thin. At the same time, the convex hulls and convex points play a role of support and reinforcement, and the role of the convex hulls is consistent with the reinforcing ribs, which strengthens the structural strength of the utility model; the convex points of the array play a role in supporting the cold plate and the items placed on the cold plate, and there are many contact points, so that the cold plate is not easy to deform, which plays a role in vibration resistance. The reinforcing ribs ensure the strength of the structure and extend the service life of the device.

[0005] Preferably, the convex hulls are arranged at equal intervals so that the magnitude of the force received at each location is roughly the same, thereby reducing the possibility of cracks in areas with greater force.

[0006] As a preferred embodiment, the convex dot array structure can make the pressure at each location the same, so that the force of the entire device is balanced, and thus it can withstand greater force, that is, load more battery modules. The utility model has no weak points under force, and the stress is more dispersed and uniform.

[0007] Preferably, the connection between the bulge and the convex point is provided with a rounded corner. Providing a rounded corner can reduce the concentration of stress, disperse the force received, and prevent the edge of the cold plate base from generating cracks due to stress concentration caused by the folded corner, thereby affecting the normal use of the utility model. It has a certain vibration reduction effect. The inclined edging structure of the arc angle enables a smooth transition between adjacent beveled side walls, improves the structural integrity of the bulge, and at the same time increases the contact area of ​​the bottom of the bulge, reduces the local pressure at the bottom of the bulge, and thus improves the overall compression resistance of the bulge.

[0008] Preferably, the top of the protrusion is in contact with the cold plate. The protrusion directly contacts the cold plate, playing a supporting role. When vibrating, the cold plate is not easily deformed because there are more supporting points in contact with the cold plate, thereby achieving vibration resistance.

[0009] Preferably, the sheet metal frame is located around the cold plate base, and the sheet metal bracket is located in the middle of the cold plate base. The sheet metal bracket supports the entire device around the cold plate base, so that the entire device has a higher structural strength and can withstand greater pressure; the sheet metal bracket is located in the middle of the cold plate base, thereby increasing the structural strength of the middle of the device and preventing the device from breaking in the middle. Because the cold plate of this device is longer, it is easier to break in the middle of the device than other products, and the sheet metal bracket solves this problem.

[0010] Preferably, the sheet metal frame is fixedly connected to the cold plate bottom bracket and the cold plate by a connector. It can be fixed by rivet screws, which increases the force-bearing area of ​​the sheet metal frame and the cold plate bottom bracket at the connection, so that the pressure at each location can be roughly the same, preventing cracks at individual locations due to excessive pressure, which affects the normal use of the device. In this way, the service life of the device is extended.

[0011] Preferably, the cold plate bottom bracket is provided with a plurality of mounting holes, which are connected with the cold plate and the sheet metal frame through the plurality of mounting holes, thereby providing stability of the device.

[0012] Preferably, a water outlet and a water inlet are arranged on the same side of the cold plate bottom support. The water outlet and the water inlet are arranged according to the flow channel, so as to enable the coolant to flow through a larger area and improve the heat dissipation efficiency.

[0013] Preferably, the cold plate can be made of thin aluminum plate, and the cold plate base can be made of carbon steel. The base made of aluminum plate and carbon steel can save production costs and ensure the structural strength of the device.

[0014] The thickness of the cold plate is between 0.5mm and 2mm, and the thickness of the cold plate base is between 0.5mm and 2mm. Such thickness can bear the weight of the battery module, have strong structural strength, save production materials, and reduce production costs. This thickness can quickly transfer heat.

[0015] The beneficial effects of the utility model are: more battery modules can be placed at one time, and the sheet metal bracket and the sheet metal frame ensure the overall structural strength of the device, so that a thin cold plate base can be selected; the cold plate base is integrally formed, and the shapes of the cold plate and the cold plate base are adapted to each other and fixed to the sheet metal frame; the cold plate has convex points and many supporting contact points, so that the cold plate is not easy to deform, which plays an anti-vibration role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a cross-sectional view of the convex hull and the convex point of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the cold plate base.

[0019] The markings in the above picture are: 1. cold plate; 2. cold plate base; 3. sheet metal frame; 4. sheet metal bracket; 5. convex bulge; 6. convex point; 7. connecting part; 8. water inlet; 9. water outlet. DETAILED DESCRIPTION

[0020] In order to make the invention objectives, technical solutions and beneficial technical effects of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Embodiment 1:

[0022] In the instruction manual Figure 3 In the invention, a vibration-resistant and elongated stamped cold plate base is provided, comprising an integrally formed thin cold plate base 2, an adaptable cold plate 1 is arranged inside the cold plate base 2; a sheet metal bracket 4 and a sheet metal frame 3 are fixed on the cold plate base 2; a plurality of long strip convex bumps 5 are arranged in parallel on the cold plate base 2; a plurality of convex points 6 are arranged on each convex bump 5, and the convex points form an array structure.

[0023] The cold plate base has 22 convex hulls arranged in parallel with equal spacing and 3×20 array convex points, and no convex points are set on the two convex hulls on the edge. Carbon steel is used, which is cheap and meets the requirements of structural strength. A sheet metal bracket 4 is set in the center of the base, and a sheet metal frame 3 is set around it. The base and the sheet metal bracket are connected by a connector 7; the cold plate is made of thin aluminum plate; the cold plate is placed inside the base and connected by brazing technology. The price of production materials is low, which reduces production costs. The carbon steel and aluminum materials also ensure the strength of the structure.

[0024] Compared with the products on the market, the cold plate base 2 and the cold plate are longer and can hold 104 battery modules at a time. In this way, the cooling efficiency can be accelerated. The length of the cold plate 1 is adapted to the length of the cold plate base, so as to achieve the purpose of sealing when the cold plate is placed in the cold plate base. The thickness of the cold plate is between 0.8mm and the thickness of the cold plate base is 1mm. Such a thickness can not only bear the weight of the battery module and has a strong structural strength, but also save production materials and reduce production costs.

[0025] In the instruction manual Figure 3 In the figure, the cold plate has a convex hull 5 structure evenly and equidistantly distributed, and three convex points 6 are evenly distributed on each convex hull. The equidistant design can make the mold design for processing the cold plate base simpler. The equidistant design can make the magnitude and direction of the force borne by each part consistent, thereby increasing the stability of the device. The convex points are arranged in an array, and the arrangement is regular, so that the pressure received at each location is roughly the same, and the pressure is dispersed.

[0026] A water inlet 8 and a water outlet 9 are provided on the cold plate base 2, and the water inlet and the water outlet are connected to the cooling system of the whole vehicle. The water inlet and the water outlet are both located outside the cold plate base, that is, the water inlet and the water outlet of the liquid cooling system are located outside the battery pack body, reducing the risk of leakage of the coolant in the battery pack.

[0027] In the instruction manual Figure 1In the figure, the cold plate 1 is mainly made of 3 series aluminum, which is light and has high strength, and can achieve lightweight design to a certain extent. The use of aluminum can prevent the cold plate from being corroded by the coolant and rusting. A welding process can be used between the cold plate and the cold plate base 2. The battery module needs to be closely fitted with the cold plate to ensure the cooling effect of the cooling system. The cold plate bracket equipped with convex humps and convex points can ensure that the cold plate and the module are closely fitted for a long time, ensure the cooling effect of the cooling system on the battery module, keep the temperature of the battery module within a suitable range, and effectively protect the cold plate, extend the service life of the cold plate, and reduce the risk of fire and explosion of the battery module due to excessive temperature rise of the battery cell. The cold plate and the cold plate base can also be connected by brazing. Brazing refers to a welding method in which the solder and the weldment below the melting point of the weldment are heated to the melting temperature of the solder at the same time, and the gap of the solid workpiece is filled with liquid solder to connect the metals. The brazing heating temperature is low, the joint is smooth and flat, the organization and mechanical properties change little, the deformation is small, and the workpiece size is accurate. Brazing can effectively ensure the stability of the connection between the cold plate and the cold plate base. In addition, the brazing equipment is simple, and the production investment cost is low, which is conducive to saving the production cost of this application. The welding method can also be pressure welding and fusion welding. Through the above welding method, the cold plate and the cold plate base can be combined into one, so that the overall stiffness and strength of the battery support plate can be greatly improved, and the overall modal and vibration durability performance are also improved, and it can bear the weight of the battery module well for stable installation of the battery module.

[0028] Embodiment 2:

[0029] A vibration-resistant extended stamped cold plate base includes an integrally stamped cold plate base, the interior of the cold plate base uses a gluing process to connect the matching cold plate; a sheet metal bracket 4 and a sheet metal frame 3 are fixed on the cold plate base 2; a plurality of parallel long strip convex bumps 5 are arranged on the cold plate base; a plurality of convex points 6 are arranged on each convex bump, and the convex points form an array structure. A sealing ring can also be arranged at the connection between the cold plate and the cold plate base, and the gap is filled with composite glue, and the composite glue has low thermal conductivity and plays a role in heat insulation.

[0030] The cold plate 1 is an aluminum flat plate, which increases the contact area with the battery module and improves the heat dissipation efficiency of the system; the cold plate base can be formed by a stamping process or a blowing process. The bulges 5 are arranged in parallel on the cold plate base, so the flow channels are also parallel, and convex points 6 are also arranged on the bulges. The bulges are arranged in an array so that the gravity borne by each part of the cold plate base is roughly the same, reducing the occurrence of breakage due to uneven force. Arranging the flow channels in parallel can make the flow channels work independently of each other without being affected by each other, but in actual use, different arrangements can also be selected according to the actual situation of the battery module.

[0031] The arrangement of the bulge 5 and the convex point 6 reduces the contact area between the cold plate base and the cold plate, and increases the contact area between the flow channel and the coolant, thereby improving the heat dissipation efficiency; in addition, the arrangement of the bulge and the convex point is equivalent to a reinforcing rib structure, which increases the structural strength of the cold plate base and has a certain vibration reduction effect. The reinforcing ribs ensure the strength of the structure and extend the service life of the device. The inclined edging structure of the arc angle allows a smooth transition between adjacent beveled side walls, improves the structural integrity of the bulge, and at the same time increases the contact area of ​​the bottom of the bulge, reduces the local pressure at the bottom of the bulge, and thus improves the overall compression resistance of the bulge.

[0032] The cross-section of the convex bulge 5 is approximately arched, which can withstand greater forces, so that the cold plate base 2 has better load-bearing performance. Compared with other battery module cooling devices, the overall structure reduces components and saves production costs, thereby achieving higher profits. The cold plate and the cold plate base have better temperature uniformity, and all components shrink when cold or expand when hot, and are consistent. The shape of the convex point can also better disperse the force to various locations; the edges are all rounded, which can disperse the stress to the surrounding area to avoid stress concentration caused by folding corners, and the occurrence of fractures or cracks.

[0033] The bumps 6 support the cold plate. Because the bumps are in an array, there are more contact points between the cold plate 1 and the cold plate base 2, which reduces the deformation of the cold plate and plays an anti-vibration role. The large number of contact points can disperse the pressure at various locations and reduce the pressure. The array is arranged in a very regular manner and can effectively play a supporting role.

[0034] The battery module is in direct contact with the cold plate 1, and the battery module is cooled by the coolant flowing inside. The cold plate and the cold plate base of the present application are relatively thin, because there are sheet metal frames 3 and sheet metal brackets 4 on the four sides and in the middle to strengthen the structural strength, so that thin aluminum plates can be used. The thin plate can quickly transfer temperature, thereby improving the heat dissipation efficiency of the battery module. Thin aluminum plates are easier to transfer heat quickly than thick aluminum plates, so that the battery module can be cooled faster. The thin thickness of the cold plate base can also quickly transfer heat to the outside air and play a role in cooling.

[0035] At the same time, the shape, size, height and arrangement of the bumps 6 can be different, the purpose is to support the cold plate placed above, and also play a role in strengthening the structural strength. If the number of battery modules placed on the cold plate is large and the weight is heavy, a more closely arranged bump and convex hull 5 structure can be set; conversely, the number of bumps and convex hulls can also be reduced, thereby reducing the use of raw materials and saving production costs.

[0036] The cold plate base 2 is integrally formed, which effectively reduces the use of parts, saves production costs, simplifies the manufacturing process steps of the lower box, reduces production costs, and improves production efficiency. The groove formed between the two convex humps is also integrally formed. Compared with spliced ​​cooling pipes, there are fewer welding points and it is not easy to leak. The shape and distribution of the flow channel can be set as needed. The cold plate is used to support the battery module to prevent the battery module from directly contacting the uneven flow channel plate, which causes uneven heating and poor cooling effect. Integral molding can simplify the production steps, so that the cold plate and cold plate base in this application can be quickly produced and processed.

[0037] The sheet metal frame 3 is located around the cold plate base and is fixed with rivet nuts. A sheet metal bracket 4 is also added in the center of the utility model. The connecting member 7 can also be selected from bolts, screws or pins, as long as the sheet metal frame and the sheet metal bracket can be connected to the cold plate base. The sheet metal frame and the sheet metal bracket make the cold plate base and the cold plate evenly stressed, ensuring the vibration resistance. The sheet metal bracket in the middle can effectively improve the compressive resistance of the cold plate base and reduce the deformation of the middle. The sheet metal frame can also play a role in reducing the deformation of the device. The rivet holes are set at both ends and the middle of the cold plate base, and the flatness of the cold plate can be ensured by setting them at both ends and the middle. The role of the rivet is to connect the sheet metal bracket and the sheet metal frame and the cold plate base together, thereby enhancing the structural strength of the overall structure. The rivet nut fixes the sheet metal frame, the sheet metal bracket, the cold plate and the cold plate base, so that each component has a strong connection strength, and each part is evenly stressed, which enhances the vibration resistance of the device.

[0038] The cold plate base 2 is provided with mounting holes all around, arranged at equal intervals; a sufficient number of mounting holes can be assembled with screws or rivet screws and other connectors, so that the sheet metal frame, sheet metal bracket, cold plate, and cold plate base are closely connected. The sheet metal frame and sheet metal bracket also ensure that the force of the present application is uniform and the vibration resistance of the device is ensured. The sheet metal frame is designed on the outside of the base to protect the rivet nut and increase the force area during installation.

[0039] The solution disclosed in the embodiment of the present application can be, but is not limited to, used in electrical devices such as vehicles, ships or aircraft. The power supply system of the electrical device can be composed of a battery pack disclosed in the present application, which is helpful to alleviate the problem of battery heating affecting the battery life.

[0040] In some embodiments, in order to increase the flow path of the cooling water, the water outlet 9 and the water inlet 8 are located on the same side of the cold plate base 2. At the same time, the water inlet and the water outlet can also be arranged to be relative, which is determined by how the flow channel is arranged. The flow channel is similar to that of the present application, that is, the water outlet and the water inlet are arranged on the same side; the principle of the arrangement is to allow the coolant to flow through a larger area to improve the efficiency of heat dissipation. The water inlet and the water outlet can be connected to the cold plate base by welding.

[0041] The material of the cold plate base 2 can also be a carbon fiber plate or a metal plate. As a result, the cold plate base can have sufficient structural strength to resist the impact of the external environment, prevent foreign objects from piercing the cold plate base, and protect the battery module. Among them, when the cold plate base is set as a metal plate, metal materials such as steel, aluminum alloy, and titanium alloy can be selected. Of course, in other embodiments, the cold plate base can also use other cloth-like or cage-like high-strength composite materials, such as glass fiber.

[0042] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A vibration-resistant extended stamping cold plate bottom bracket, characterized in that: It comprises an integrally formed thin cold plate base (2), wherein a matching cold plate (1) is arranged inside the cold plate base (2); A sheet metal bracket (4) and a sheet metal frame (3) are fixed on the cold plate bottom bracket (2); A plurality of long strip-shaped convex hulls (5) are arranged in parallel on the cold plate bottom support (2); A plurality of convex points (6) are arranged on each convex hull (5), and the convex points form an array structure.

2. The vibration-resistant extended stamping cold plate base according to claim 1 is characterized in that: The convex hulls (5) are arranged at equal intervals.

3. The vibration-resistant extended stamping cold plate base according to claim 1 is characterized in that: A rounded corner is provided at the connection between the convex hull (5) and the convex point (6).

4. The vibration-resistant extended stamping cold plate base according to claim 1 is characterized in that: The top of the protrusion (6) is in contact with the cold plate (1).

5. The vibration-resistant extended stamping cold plate base according to claim 1 is characterized in that: The thickness of the cold plate is between 0.5mm and 2mm, and the thickness of the cold plate base is between 0.5mm and 2mm.

6. A vibration-resistant extended stamping cold plate base according to any one of claims 1 to 5, characterized in that: The sheet metal frame (3) is located around the cold plate base (2), and the sheet metal bracket (4) is located in the middle of the cold plate base.

7. The vibration-resistant extended stamping cold plate base according to claim 1 is characterized in that: A plurality of mounting holes are arranged on the cold plate bottom bracket (2).

8. The vibration-resistant extended stamping cold plate base according to claim 1, characterized in that: The sheet metal frame (3) is fixedly connected to the cold plate base (2) and the cold plate (1) by means of a connecting piece (7).

9. The vibration-resistant extended stamping cold plate base according to any one of claims 1 to 5, characterized in that: A water outlet (9) and a water inlet (8) are provided on the cold plate base (2).

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