Radiator for energy storage battery pack and energy storage device with same

Abstract

The embodiment of the utility model provides a radiator for an energy storage battery pack and an energy storage device with the radiator. The radiator comprises a first radiating plate main body, a second radiating plate main body, a front sealing strip, a rear sealing strip, a cross beam and a steel support, wherein the first radiating plate main body and the second radiating plate main body are respectively provided with a cavity; the first heat dissipation plate main body and the second heat dissipation plate main body are welded to form a heat dissipation plate, and the two cavities are communicated to form a flow channel for cooling liquid to flow; the cross beams are arranged at the two ends of the first surface of the heat dissipation plate respectively, the cross beams are used for arranging a battery pack, and the steel support is detachably arranged on the second surface of the heat dissipation plate; the front sealing strip and the rear sealing strip are inserted into the two opposite ends of the heat dissipation plate in a sealed mode respectively, and the two ends of the front sealing strip are provided with a water inlet nozzle and a water outlet nozzle respectively, wherein the water inlet nozzle and the water outlet nozzle are communicated with the flow channels of the two heat dissipation plate bodies respectively. The radiator is simple in structure and easy to disassemble and assemble, the steel support improves the bearing capacity of the radiator, and the water nozzle is arranged on the front sealing strip and is easy and convenient to disassemble and assemble.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of heat dissipation of energy storage batteries, and in particular to a radiator for an energy storage battery pack and an energy storage device having the same. Background Art

[0002] Common battery pack radiators currently on the market lack support at the bottom. After the 300-kilogram module is installed, the radiator will deform to varying degrees. Unable to withstand high-intensity shock and vibration, it cannot be shipped overseas and sold in foreign markets.

[0003] In addition, due to the limitation of assembly space, radiators are generally made thinner, and the water joint cannot be welded on the side of the radiator, but can only be welded inside the radiator box. The position where the water joint is led out of the box requires a separate design of a sealing structure, such as Figure 1 As shown in the figure, box-through joints are generally used, which increases materials and has a higher cost.

[0004] For traditional radiators, the hoisting position is generally arranged on the aluminum profile on the side of the cold plate, which has low strength and is prone to formation. Utility Model Content

[0005] The purpose of the embodiments of the present disclosure is to provide a radiator for an energy storage battery pack and an energy storage device having the same, thereby solving the aforementioned problems existing in the prior art.

[0006] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present disclosure are as follows:

[0007] In one aspect, an embodiment of the present disclosure provides a radiator for an energy storage battery pack, the radiator comprising: a first heat dissipation plate body and a second heat dissipation plate body, each having a cavity, a front seal, a rear seal, a crossbeam, and a steel support;

[0008] The first heat sink body and the second heat sink body are welded to form a radiator plate, and the two cavities are connected to form a flow channel for the flow of coolant;

[0009] The two ends of the first surface of the radiator plate are respectively provided with the crossbeams, and the crossbeams are used to set the battery pack. The second surface of the radiator plate is detachably provided with the steel support;

[0010] The front seal and the rear seal are respectively sealed and inserted at the opposite ends of the heat sink, and the two ends of the front seal are respectively provided with a water inlet and a water outlet which are respectively connected with the flow channels of the two heat sink bodies.

[0011] Optionally, both ends of the radiator plate along the length direction are concave inward to form front and rear grooves communicating with the flow channel;

[0012] The front seal includes a front wedge seal that is sealingly inserted into the front inner cavity of the heat sink and a front fixing strip connected to the wider end of the front wedge seal;

[0013] The two ends of the front fixing bar are respectively provided with holes, and the two ends of the front fixing bar are respectively provided with the water inlet and the water outlet;

[0014] The water inlet and outlet are connected to the corresponding flow channels in the heat sink body through corresponding channels respectively;

[0015] The rear sealing strip comprises a rear wedge-shaped sealing strip and a rear fixing strip connected to a wider end of the rear wedge-shaped sealing strip.

[0016] Optionally, notches are provided at both ends of the front wedge-shaped sealing strip, and protrusions are provided at both ends of the front fixing strip, and the protrusions correspond to the notches one by one.

[0017] The two protruding structures are respectively provided with the water inlet and the water outlet, and each of the protruding structures is provided with a channel, so that the water inlet and the water outlet are respectively connected to the flow channel in the corresponding heat sink body through the corresponding channel and the notch.

[0018] Optionally, a clamping plate is provided on one side of the first heat sink body and the second heat sink body along the width direction, and the first heat sink body and the second heat sink body are welded together on the other side along the width direction.

[0019] Optionally, the clamping plate on the second surface of the heat dissipation plate is provided with concave slots near both ends;

[0020] The steel supports are provided in multiple groups, which are divided into two groups. One group has two longer ones, which respectively pass through the slots and are arranged on the second surface of the heat sink; the other group has at least one shorter one, which is evenly arranged between the two longer steel supports.

[0021] The second surface of the heat dissipation plate is provided with a plurality of tapping threads; the steel support is provided with threaded holes corresponding to the tapping threads; and the steel support is fastened to the heat dissipation plate by bolts.

[0022] Optionally, a longer steel support passes through the slot and is provided with lifting holes at both ends.

[0023] Optionally, the crossbeam includes a front crossbeam and a rear crossbeam respectively arranged at two ends of the first surface of the radiator plate, and the front crossbeam and the rear crossbeam are respectively arranged between the clamping plates at both ends of the radiator plate.

[0024] Optionally, the front cross beam includes a first front beam bar, a second front beam bar, and a plurality of fixing blocks evenly arranged between the two front beam bars;

[0025] The rear cross beam comprises a rear beam bar and a mounting plate connected with the rear beam bar.

[0026] Optionally, the first front beam is close to the front seal, and the second front beam is thinner than the first front beam;

[0027] The rear beam is close to the rear seal, and the thickness of the mounting plate is smaller than that of the rear beam;

[0028] The first surfaces of the first front beam and the rear beam are respectively flush with the first surface of the clamping plate.

[0029] Another aspect of the embodiments of the present disclosure provides an energy storage device, which includes a plurality of battery packs and the radiator as described above, wherein the battery packs are disposed on the crossbeam.

[0030] The beneficial effects of the embodiments of the present disclosure are:

[0031] The radiator of the disclosed embodiment has a simple structure, is easy to process, and has a significantly improved load-bearing capacity. The water nozzle is arranged on the front seal, which is easy to assemble and disassemble, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the battery pack radiator structure of the prior art

[0033] Figure 2 This is a schematic diagram of the disassembled structure of a radiator for an energy storage battery pack according to an embodiment of the present disclosure;

[0034] Figure 3 This is a front structural schematic diagram of a radiator for an energy storage battery pack according to an embodiment of the present disclosure;

[0035] Figure 4 This is a structural schematic diagram of the back side of a radiator for an energy storage battery pack according to an embodiment of the present disclosure;

[0036] Figure 5 This is a deformation diagram of a pressure strength simulation test of a radiator for an energy storage battery pack according to an embodiment of the present disclosure, wherein the central area of ​​the radiator is severely deformed, while the two edges of the radiator along the width direction are almost not deformed.

[0037] In the figure,

[0038] 1. First heat sink body; 2. Second heat sink body; 3. Front seal; 31. Front wedge seal; 311. Notch; 32. Front fixing bar; 321. Raised structure; 4. Rear seal; 41. Rear wedge seal; 42. Rear fixing bar; 5. Crossbeam; 51. Front crossbeam; 511. First front beam; 512. Second front beam; 513. Fixing block; 52. Rear crossbeam; 521. Rear beam; 522. Mounting plate; 61. Longer steel support; 611. Lifting hole; 62. Shorter steel support; 7. Water inlet; 8. Water outlet; 9. Clamp; 91. Slot; 10. Heat sink. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure are further described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the embodiments of the present disclosure and are not intended to limit the embodiments of the present disclosure.

[0040] like Figure 2 and Figure 3 As shown, on the one hand, an embodiment of the present disclosure proposes a radiator for an energy storage battery pack, wherein the radiator includes: a first heat sink body 1 and a second heat sink body 2, each having a cavity, a front seal 3, a rear seal 4, a crossbeam 5 and a steel support; the first heat sink body 1 and the second heat sink body 2 are welded to form a radiator plate 10, and the two cavities are connected to form a flow channel for the flow of coolant; the crossbeams 5 are respectively provided at both ends of the first surface of the radiator plate 10, and the crossbeams 6 are used to set the battery pack, and the steel support is detachably provided on the second surface of the heat sink 10; the front seal 3 and the rear seal 4 are respectively sealed and inserted at the opposite ends of the heat sink, and the water inlet nozzle 7 and the water outlet nozzle 8, which are respectively connected to the flow channels of the two heat sink bodies, are respectively provided at both ends of the front seal 3.

[0041] Specifically, the first heat sink body 1 and the second heat sink body 2 are respectively provided with a clamping plate 9 on one side along the width direction, and the first heat sink body and the second heat sink body are welded together on the other side along the width direction. That is, a cavity is extruded through the profile between the first heat sink body and the second heat sink body, and the two symmetrical heat sink body bodies are welded together into a whole by stir friction welding. The two cavities are connected to form a flow channel for the flow of coolant, and the flow channel covers the heat sink. The flow channel can be set according to actual conditions. Then, a machining center is used to process the two ends into water storage channels. The water storage channel refers to the main flow channel at both ends, which plays the role of water storage and confluence. The heat sink in the embodiment of the present disclosure is made of metal, specifically aluminum, which is conducive to heat dissipation. The front seal and the rear seal are welded to the heat sink body by stir welding. The water inlet and the water outlet are respectively welded by argon arc welding, and the whole is fully welded to the front seal to ensure the sealing of the radiator. The front seal features channels connecting the water inlet and outlet to the inner channel of the heat sink. These inlet and outlet ports are connected to the external coolant circulation system via connectors, allowing the outflowing coolant to flow back into the coolant circulation system. The crossbeam, used to connect the heat sink and battery pack, is laser-welded to the heat sink, resulting in a uniform and small weld that does not affect battery module installation and meets the IP67 sealing requirements of the housing.

[0042] The disclosed embodiment provides a product design for a radiator for an energy storage battery pack. This type of radiator is widely used to support and dissipate heat for battery packs in battery cabinets of energy storage containers. During the continuous charging and discharging stages, the battery pack converts electrical energy into thermal energy, releasing a large amount of heat. The heat is transferred to the radiator, and the heat is taken out of the battery pack through the circulation of the coolant inside the radiator, so that the battery pack is stabilized within a certain temperature range, ensuring the normal operation of the battery and extending the service life of the battery. Conventional battery pack radiators have a greatly weakened load-bearing capacity due to the lack of steel support at the bottom, and the radiator is at risk of being crushed. This reinforced support radiator has a large load-bearing capacity and its ability to resist impact and vibration is nearly 10 times stronger. It has high reliability for long-distance transportation and supply to foreign countries. The disclosed embodiment adds a steel structure support at the bottom of the radiator. Through pressure strength simulation, it is ensured that after the installation of a battery module weighing more than 300 kilograms, the deformation of the radiator is within the qualified range, such as Figure 5 As shown. It can also withstand high-intensity shock and vibration.

[0043] Conventional battery pack radiators have a water spout located inside the housing, which also serves as the heat sink. This requires costly connectors to connect the spout. Leakage from this connector inside the housing poses a significant safety risk to the battery pack, and is inconvenient to maintain, requiring the housing to be opened. The disclosed embodiment welds the spout to the front seal, with the connector located outside the housing, eliminating the cost of a connector. This eliminates the risk of leaks and safety hazards inside the housing, and the connector can be plugged in and out of the spout without opening the housing.

[0044] As a specific example of a radiator, the inner cavities at both ends of the radiator plate 10 along the length direction are water storage channels; the front seal 3 includes a front wedge-shaped seal 31 sealed and inserted in the front end inner cavity of the heat sink, and a front fixing strip 32 connected to the wider end of the front wedge-shaped seal; channels are respectively provided in both ends of the front fixing strip 32, and the water inlet nozzle 7 and the water outlet nozzle 8 are respectively provided at both ends of the front fixing strip 32; the water inlet nozzle 7 and the water outlet nozzle 8 are respectively connected to the corresponding flow channels in the heat sink body through corresponding channels; the rear seal 4 includes a rear wedge-shaped seal 41 and a rear fixing strip 42 connected to the wider end of the rear wedge seal.

[0045] The radiator plate of this disclosed embodiment has hollow interiors along both ends of its length, with water channels machined using a machining center. A hole is provided in the front seal, allowing a water spout, mounted on the front seal, to communicate with the water channel within the radiator plate through the hole. Front and rear seals are welded to seal the front and rear ends of the radiator plate.

[0046] As a specific example of the front seal, notches 311 are respectively provided at both ends of the front wedge seal 31, and protruding structures 321 are respectively provided at both ends of the front fixing strip 32, and the protruding structures 321 correspond one-to-one to the notches 311; the two protruding structures 321 are respectively provided with the water inlet nozzle 7 and the water outlet nozzle 8, and each of the protruding structures 321 is provided with a channel, so that the water inlet nozzle 7 and the water outlet nozzle 8 are respectively connected to the flow channel in the corresponding heat sink body through the corresponding channel and notch 311.

[0047] The front seal of the embodiment of the present disclosure has a simple structure, and the water nozzle is arranged in the front seal instead of in the heat sink, which makes it more convenient to disassemble and repair the heat sink.

[0048] like Figure 2 and 4As shown in the figure, as a specific example of a front seal, the clamping plate 9 on the second surface of the heat sink is provided with concave slots 91 near both ends. The steel supports are provided in two groups: one group is longer and has two, each passing through the slots 91 and provided on the second surface of the heat sink 10; the other group is shorter and has at least one, evenly spaced between the two longer steel supports 61. The second surface of the heat sink 10 is provided with multiple tapped threads; the steel supports are provided with threaded holes corresponding to the tapped threads; and the steel supports are fastened to the heat sink by bolts. It should be noted that the clamping plate 9 is welded to the surface of the radiator.

[0049] The disclosed embodiment of the present invention has grooves in the bottom frame of the radiator, and sets tapped threads at the bottom of the heat sink, and uses high-strength bolts to connect the steel support to the radiator to support, reinforce, and prevent deformation after installation. The splint, i.e., the frame, is used to support the edges of the first heat sink body and the second heat sink body, and is asynchronously reinforced with bolts. Finally, after installing rivet screws around the steel support, the structure of the entire radiator is formed. There are multiple groups of steel supports, which are evenly arranged on the back of the heat sink, i.e., the second side, to increase the load-bearing capacity of the heat sink. The longer steel supports are set at both ends of the heat sink and pass through the splint slots to maintain the integrity of the heat sink, and are also used to set lifting holes. The shorter steel support is set between the two splints to save processing.

[0050] As a specific example of a steel support, a longer steel support 61 passes through the slot and is provided with lifting holes 611 at both ends thereof.

[0051] Conventional battery pack radiators are mounted on the sidewalls of the cold plate or through the profile holes at the front, resulting in low strength and prone to deformation, which can cause accidents. The disclosed embodiment utilizes the steel support at the bottom of the heat sink, designing the mounting location on the steel support for high strength and less prone to deformation during hoisting.

[0052] like Figure 2 As shown, as a specific example of a crossbeam, the crossbeam 5 includes a front crossbeam 51 and a rear crossbeam 52 respectively arranged at both ends of the first surface of the radiator plate 10, and the front crossbeam 51 and the rear crossbeam 52 are respectively arranged between the clamping plates 9 at both ends of the radiator plate 10.

[0053] The crossbeam is laser welded to the heat sink, which not only plays a reinforcing role but also can be used to install other components.

[0054] As a specific example of a crossbeam, the front crossbeam 51 includes a first front beam 511, a second front beam 512 and a plurality of fixing blocks 513 evenly arranged between the two front beams; the rear crossbeam 52 includes a rear beam 521 and a mounting plate 522 connected to the rear beam 521.

[0055] The crossbeam is used to install the electromagnetic module, that is, the battery pack. The position of the crossbeam can be set according to the size of the battery pack. The front crossbeam and the rear crossbeam are convenient for installing the battery pack.

[0056] like Figure 3 As shown, as a specific example of a crossbeam, the first front beam 511 is close to the front seal 3, and the thickness of the second front beam 512 is less than that of the first front beam 511; the rear beam 521 is close to the rear seal 4, and the thickness of the mounting plate 522 is less than that of the rear beam 521; the first surfaces of the first front beam 511 and the rear beam 521 are respectively flush with the first surface of the splint 9.

[0057] The second front beam is thinner than the first front beam, and the mounting plate is thinner than the rear beam. After the radiator is installed, screws are driven into the clamping plate, the first front beam, and the rear beam to further reinforce them. The battery pack can be clamped between the first front beam and the rear beam to facilitate installation.

[0058] Another aspect of the embodiments of the present disclosure provides an energy storage system, the device comprising a plurality of battery packs and the radiator as described above, wherein the battery packs are disposed on the crossbeam.

[0059] The above is only a preferred implementation of the embodiment of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present disclosure. These improvements and modifications should also be considered within the scope of protection of the embodiment of the present disclosure.

Claims

1. A radiator for an energy storage battery pack, characterized in that: The radiator comprises: a first radiating plate body and a second radiating plate body respectively having cavities, a front seal, a rear seal, a crossbeam and a steel support; The first heat sink body and the second heat sink body are welded to form a radiator plate, and the two cavities are connected to form a flow channel for the flow of coolant; The two ends of the first surface of the radiator plate are respectively provided with the crossbeams, and the crossbeams are used to set the battery pack. The second surface of the radiator plate is detachably provided with the steel support; The front seal and the rear seal are respectively sealed and inserted at the opposite ends of the heat sink, and the two ends of the front seal are respectively provided with a water inlet and a water outlet which are respectively connected with the flow channels of the two heat sink bodies.

2. The radiator according to claim 1, characterized in that The two ends of the radiator plate along the length direction are concave inward to form front and rear grooves communicating with the flow channel; The front seal includes a front wedge seal that is sealingly inserted into the front inner cavity of the heat sink and a front fixing strip connected to the wider end of the front wedge seal; The two ends of the front fixing bar are respectively provided with holes, and the two ends of the front fixing bar are respectively provided with the water inlet and the water outlet; The water inlet and outlet are connected to the corresponding flow channels in the heat sink body through corresponding channels respectively; The rear sealing strip comprises a rear wedge-shaped sealing strip and a rear fixing strip connected to a wider end of the rear wedge-shaped sealing strip.

3. The radiator according to claim 2, characterized in that The two ends of the front wedge-shaped sealing strip are respectively provided with notches, and the two ends of the front fixing strip are respectively provided with protrusion structures, and the protrusion structures correspond to the notches one by one; The two protruding structures are respectively provided with the water inlet and the water outlet, and each of the protruding structures is provided with a channel, so that the water inlet and the water outlet are respectively connected to the flow channel in the corresponding heat sink body through the corresponding channel and the notch.

4. The radiator according to any one of claims 1 to 3, characterized in that: A clamping plate is provided on one side of the first heat dissipation plate body and the second heat dissipation plate body along the width direction, respectively. The first heat dissipation plate body and the second heat dissipation plate body are welded together on the other side along the width direction.

5. The radiator according to claim 4, characterized in that The clamping plate on the second surface of the heat dissipation plate is provided with concave slots near both ends; The steel supports are provided in multiple groups, which are divided into two groups. One group has two longer ones, which respectively pass through the slots and are arranged on the second surface of the heat sink; the other group has at least one shorter one, which is evenly arranged between the two longer steel supports. The second surface of the heat dissipation plate is provided with a plurality of tapping threads; the steel support is provided with threaded holes corresponding to the tapping threads; and the steel support is fastened to the heat dissipation plate by bolts.

6. The radiator according to claim 5, characterized in that The longer steel support passes through the slot and is respectively provided with lifting holes at both ends.

7. The radiator according to claim 4, characterized in that The cross beam comprises a front cross beam and a rear cross beam respectively arranged at two ends of the first surface of the radiator plate, and the front cross beam and the rear cross beam are respectively arranged between the clamping plates at two ends of the radiator plate.

8. The radiator according to claim 7, characterized in that The front cross beam includes a first front beam bar, a second front beam bar and a plurality of fixing blocks evenly arranged between the two front beam bars; The rear cross beam comprises a rear beam bar and a mounting plate connected with the rear beam bar.

9. The radiator according to claim 8, characterized in that The first front beam is close to the front seal, and the second front beam is thinner than the first front beam; The rear beam is close to the rear seal, and the thickness of the mounting plate is smaller than that of the rear beam; The first surfaces of the first front beam and the rear beam are respectively flush with the first surface of the clamping plate.

10. An energy storage device, characterized in that: The device includes a plurality of battery packs and the radiator according to any one of claims 1 to 9, wherein the battery packs are arranged on the crossbeam.

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