CN118137009A - Fin type radiator, battery pack and electricity utilization device - Google Patents

Abstract

The invention relates to a fin type radiator, a battery pack and an electric device, wherein the fin type radiator comprises a plurality of spacers, each spacer is provided with a placement cavity for placing a device, a gap is reserved between two adjacent spacers, the two adjacent spacers are connected through a connecting part, and the gap not only can provide a certain elastic modulus in the transverse direction, but also can conduct out heat generated by the device in the placement cavity to protect the device. The radiator with the structure not only has the conventional heat radiation performance, but also can be used for positioning and mounting devices such as single batteries, so that the extrusion degree among the devices is reduced, the functional diversity of the fin radiator is improved, the utilization rate and the integration efficiency of the internal space of the battery pack can be effectively improved, and the working safety and the stability of the battery and the power utilization device are improved.

Description

Fin type radiator, battery pack and electricity utilization device

Technical Field

The invention relates to the technical field of batteries, in particular to a fin type radiator, a battery pack and an electric device.

Background

In recent years, the development of battery technology is rapid, the permeability of new energy automobiles carrying high-energy-density power batteries is over 25%, and large-capacity battery energy storage power stations are also one by one landed, but the volumetric energy density loss brought by the grouping process from battery monomers to a battery system is over 50%, so that in order to solve the problem, the industry is focused on the structural design and manufacturing method of the battery system, so that the space utilization rate in the battery system is optimized, the integration efficiency of the battery system is over 60%, and the mass energy density and the volumetric energy density of the battery system are improved.

The patent with the publication number of CN 110165118B discloses a battery pack, a vehicle and an energy storage device, wherein the battery pack is applied for by forming a battery array through a plurality of long single batteries, the size of each long single battery is 600-2500 mm, the battery capacity of the battery pack can be improved, and meanwhile, the integral rigidity of the battery pack can be improved through the single batteries. The patent adopts a mode of structural glue adhesion, and the volume expansion force of the battery monomer in the process of charging and discharging or long-term use of the battery monomer in the mode can not be effectively released, so that the battery monomer can be directly extruded, and the battery cycle performance is influenced. In order to overcome the defect, the industry has a mode of adding a buffer pad between large sides of the battery cells, but the buffer pad has the defects of higher cost, complex battery grouping process, additional increase of the weight of a battery system and the like, meanwhile, the buffer pad cannot realize complete isolation between single sides of the battery, and once the battery cells are out of control, the interlocking thermal runaway reaction of the battery system is easily initiated.

The application discloses a box structure, a battery and an electric device, wherein the box structure, the battery and the electric device are disclosed in the patent with the bulletin number of CN 216648494U, a reinforcement body is connected between an upper cover and a lower box body, the bonding strength between the upper cover and the lower box body is enhanced, the stability of the box structure is improved, and a water cooling function is integrated on the reinforcement body, so that under the condition of meeting the requirements of heat dissipation and structural strength, the space utilization rate is considered, the structures such as a water cooling plate and a bottom guard plate of the traditional box body can be canceled, the integration level is high, and the energy density is improved; meanwhile, the weight reduction of the box body structure is facilitated. In addition, the water cooling function is integrated in the reinforcement body, so that the water cooling function is transferred into the box body structure, and the risk of liquid leakage caused by easy damage due to collision is avoided. The multifunctional liquid cooling plates are arranged in one or more layers of battery monomer groups, but a plurality of groups of liquid cooling plates are needed in a battery system, and the liquid cooling plates after the monomer groups still occupy a larger space in the X direction or the Y direction of the system to place liquid cooling plate pipeline joints, and the space is generally unequal from 15mm to 25mm, so that the further improvement of the space utilization rate of the battery system is influenced; meanwhile, due to the existence of the pipeline joint of the liquid cooling plate in the battery system, the internal short circuit safety risk caused by leakage of the pipeline joint in the battery system is increased.

Therefore, how to adjust the structure of the battery pack and its internal components to improve the battery integration and improve the safety and reliability of the battery operation is a technical problem to be solved by the present application.

Disclosure of Invention

It is therefore an object of the present invention to provide a fin-type heat sink which not only has conventional heat dissipation properties, but also can be used for positioning and mounting devices such as unit cells, thereby reducing the extrusion degree between the devices and improving the functional diversity of the fin-type heat sink.

The present invention is directed to a battery pack comprising the fin type heat sink, which can effectively improve the internal space utilization and integration efficiency of the battery pack, and improve the working safety and stability of the battery.

Another main object of the present invention is to overcome at least one of the above drawbacks, and to provide an electric device using the above battery pack, which can improve the overall mass energy density and volume energy density without sacrificing the safety of the electric device, and has low cost and simple manufacturing and processing.

In order to achieve the above purpose, the invention adopts the following technical scheme:

The invention provides a fin type radiator, which comprises:

a plurality of spacers, each spacer having a placement cavity for placement of a device therein, a gap being left between adjacent spacers;

And the connecting parts are connected between two adjacent spacers through the connecting parts.

Devices such as batteries can be placed in the placement cavity of each spacer, and the fin type radiator is usually made of rigid heat conducting materials such as aluminum, copper or stainless steel, so that the spacers have good mechanical strength and elastic modulus, are convenient to position and place, and meanwhile, a gap is reserved between adjacent spacers, so that the heat dissipation performance can be effectively improved.

According to one embodiment of the invention, the spacer comprises two fins and a bottom plate, wherein the two fins are fixed on the bottom plate to form the placement cavity with an open top. Simple structure, the production and processing of being convenient for, the later stage is also simpler when carrying out the installation of device.

According to one embodiment of the invention, the accommodating cavity of the spacer is used for accommodating a battery, and the bottom plate is provided with a pole clamping hole. The battery is placed in the placement cavity in an inverted mode, the poles of the battery are limited through the pole clamping holes, the space utilization rate of the height direction of the radiator can be directly improved, meanwhile, when the battery is out of control, solid matters and smoke are directly sprayed downwards at the poles of the battery, and the exhaust channel can be more conveniently arranged to guide the solid matters and the smoke into the independent exhaust channel.

According to one embodiment of the invention, the bottom plate is provided with a smoke exhaust hole.

According to one embodiment of the invention, the fin is one of a straight strip plate, a wave plate and a grid plate.

According to one embodiment of the invention, the fins are straight strips, gaps between adjacent spacers are closed to form closed cooling cavities, and the cooling cavities are connected through external pipelines to form cooling channels. By sealing the gaps and connecting the gaps in series through the pipelines, a liquid flow passage is formed in the radiator, and the heat radiation performance of the radiator can be further improved.

According to one embodiment of the invention, the spacers are U-shaped grooves, and the spacers are arranged in parallel and sequentially connected through the connecting parts to form the fin type radiator, and the fin type radiator is in a cuboid shape with a plurality of accommodating cavities.

According to one embodiment of the invention, the distance of the gap is 0.5-10 mm.

According to one embodiment of the application, the fin radiator is made of stainless steel materials. The rigidity and heat conduction performance of the stainless steel material can better meet the parameter requirements of the spacer, and the cost is lower than that of materials such as copper.

In particular, the application also provides a battery pack which comprises a plurality of batteries and the fin type radiator, wherein the batteries are respectively arranged in the arranging cavities.

According to one embodiment of the invention, two sides of the large surface of the battery are contacted with the fins of the spacer, and the pole of the battery is clamped in the pole clamping hole on the bottom plate of the spacer. The fins are in direct contact with the large surface of the battery in the height direction to form a heat conduction path, and heat is conducted out through gaps between adjacent spacers, so that the heat dissipation capacity of the battery monomer is effectively enhanced.

According to one embodiment of the invention, the battery pack further comprises a liquid cooling plate, wherein the liquid cooling plate is arranged on the upper parts of the fin type radiator and the battery, and the liquid cooling plate is adhered and fixed with the fin type radiator and the battery through heat conducting glue.

According to one embodiment of the invention, the battery pack comprises a box body, the fin type radiator and the battery are packaged and fixed in the box body, a smoke exhaust channel is formed in the bottom surface of the box body, and a high-voltage overcurrent row for externally connecting an electric circuit is arranged between the bottom surface of the fin type radiator and the box body.

In particular, the invention also provides an electric device which comprises the battery pack.

Compared with the prior art, the fin type radiator, the battery pack and the power utilization device have the advantages that:

The fin type radiator designs a spacer structure with a mounting cavity by utilizing excellent mechanical properties of rigid heat conducting materials such as stainless steel and the like, and a gap is arranged between adjacent spacers, so that the gap not only can provide a certain elastic modulus in the transverse direction, but also can conduct out heat generated by devices in the mounting cavity to protect the devices. And each clearance under this structure can be connected and constitute the liquid cooling runner, can further improve the heat dispersion, can replace the liquid cooling board in traditional battery package structure even, need not to set up outside liquid cooling board additionally.

Furthermore, the fin type radiator is particularly suitable for assembling batteries, namely, the single batteries are assembled in the arrangement cavities of the spacers one by one, and as the battery has a certain expansion in volume in the process of charging and discharging or long-term use, the structure of the fin type radiator can adapt to the volume change of the battery, reduce the extrusion of the battery and prolong the cycle life of the battery. In addition, due to the existence of the fin structure, when the battery monomer is out of control, the safety of the adjacent battery monomer at the other side of the fin can be protected due to the mechanical strength and the high temperature resistance of the stainless steel material.

Adopt the battery package of above-mentioned fin radiator structure, need not to arrange the liquid cooling pipeline joint in the X direction or the Y direction of battery package, arrange the liquid cooling board in the Z direction of battery package, so can release in space totally and arrange the battery, greatly promote the inside battery of battery package and make up efficiency. When thermal runaway occurs in a certain battery in the battery pack, the polar column of the battery pack is downwards arranged, so that solid matters and smoke sprayed downwards can be led into an independent exhaust channel, the problem of arc discharge, spark and the like caused by electric pollution in a high-voltage environment is avoided, the thermal runaway safety risk of the whole battery pack is avoided, meanwhile, the separation design of the high-voltage electric connection of the liquid cooling plate and the battery positioned at the lower part of the radiator can be realized, and the short circuit safety risk caused by the damage and leakage of the liquid cooling plate due to collision is avoided.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic diagram of a fin radiator according to one embodiment of the invention;

Fig. 2 is a schematic view of a fin type heat sink in a state where a square battery is loaded according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a fin radiator in a state where a square battery is loaded according to an embodiment of the present invention;

fig. 4 is a schematic top view of a fin-type heat sink in a state of loading a square battery according to an embodiment of the present invention;

fig. 5 is a schematic view showing a structure of a fin type heat sink in a state in which an integrated blade type battery is loaded according to another embodiment of the present invention;

Fig. 6 is a schematic view showing a structure of a fin type heat sink in a state in which a split blade type battery is loaded according to another embodiment of the present invention;

fig. 7 is a schematic structural view of a battery pack according to an embodiment of the present invention.

The reference numerals are explained as follows:

1. Spacers 11, fins 12, bottom plates 121, pole clamping holes 122, smoke discharging holes 13, connecting parts 14, installation cavities 15, gaps between adjacent spacers 16 and fixed edges

2. Battery cell

31. The lower box body 32, an upper cover 33, a liquid cooling plate 34, a fixed reinforcing end plate 35, an end plate bracket 36, a fixed bracket 37, a high-pressure overcurrent row 38 and a smoke exhaust channel;

4. A fin type radiator.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1:

This embodiment describes a fin type heat sink, as shown in fig. 1 to 4, which includes:

a plurality of spacers 1, each spacer 1 is provided with a placement cavity 14 for placing devices, and a gap 15 is reserved between two adjacent spacers 1;

and the connecting parts 13 are connected between two adjacent spacers 1 through the connecting parts 13.

Devices such as batteries 2 may be placed in the placement cavity 14 of each spacer 1, and the fin type heat sink is typically made of a rigid heat conductive material such as aluminum, copper, or stainless steel, so that the spacers 1 have good mechanical strength and elastic modulus, facilitate positioning and placement, and at the same time, allow gaps 15 between adjacent spacers 1 to effectively improve heat dissipation.

The radiator in this embodiment may be made of stainless steel material, or may be made of aluminum, copper or other alloy material, so long as it has appropriate rigidity, structural strength and heat conductivity, and may be specifically selected according to the needs of the user.

The spacer 1 in this embodiment is made of a stainless steel material, and the stainless steel material may be selected from various types and grades of stainless steel materials including austenitic, ferritic, martensitic, and duplex or multiphase stainless steel, and preferably 304 type stainless steel. The fin radiator utilizes the high ductility and good forming performance of stainless steel materials, can be processed into a structure with multiple spacers 1 connected by stamping, stretching, sheet metal and the like, can be processed into a corrugated structure similar to a coiled pipe, a staggered structure similar to a hexagonal prism and a zigzag structure similar to a quadrilateral, can be assembled into square, short-knife, long-knife, cylindrical, prismatic and soft-package battery monomers with different sizes and models according to the structure of the battery core.

In one embodiment, the spacers 1 are in a U-shaped groove shape, and each spacer 1 is arranged in parallel and sequentially connected through the connecting portion 13 to form the fin type radiator, and the fin type radiator is in a cuboid shape with a plurality of placement cavities 14. As shown in fig. 2 and 3, the spacer 1 includes two fins 11 and a bottom plate 12, and the two fins 11 are fixed on the bottom plate 12 to form the placement cavity 14 with an open top. The spacer 1 has a simple structure, is convenient for production and processing, and is simpler when the device is installed in the later stage. Each spacer 1 can be processed independently, and the structure of the radiator is formed by welding connection through the connecting part 13, and also can be processed into a structure with multiple spacers 1 connected through stamping, stretching, sheet metal and other modes, each spacer 1 is connected through the connecting part 13, and the connecting part 13 can be arranged at the top, the bottom or the side surface of the spacer 1, so that adjacent spacers 1 are connected in sequence to form the shape required by a user.

In one embodiment, as shown in fig. 4, the accommodating cavity 14 of the spacer 1 is used for accommodating the battery 2, and the bottom plate 12 is provided with a post clamping hole 121 and a smoke exhaust hole 122. The battery 2 is placed in the placement cavity 14 in an inverted mode, the poles of the battery 2 are limited through the pole clamping holes 121, the space utilization rate of the height direction of the radiator can be directly improved, meanwhile, when thermal runaway occurs in the battery 2, solid matters and smoke sprayed downwards are directly arranged at the poles of the battery, and the exhaust channel can be arranged more conveniently to guide the solid matters and the smoke into the independent exhaust channel.

The placement in the placement cavity 14 is also slightly different for different types of batteries. For square batteries, as shown in fig. 2, the batteries can be placed between two layers of fins 11 in an inverted or upright manner, and the space utilization rate in the height direction can be directly improved due to the structure that the positive and negative electrode posts are clamped in the bottom pore channels of the spacer 1; for the blade type or soft package battery cell, the battery cell is directly transversely arranged between two layers of fins 11, the positive electrode pole and the negative electrode pole are respectively positioned at two ends of the positioning cavity 14 of the spacer 1, and the structural main body of the fin type radiator can be designed into an integrated structure (shown in figure 5) or a split structure (shown in figure 6) according to the size of the blade type or soft package battery cell; for a cylindrical or prismatic cell, it may be placed upright in a correspondingly shaped slot of fin 11.

For the heat dissipation fin 11 of the present embodiment, which has a plurality of important parameters, the important parameters include the thickness (C) of the structure of the spacer 1, the height (H) of the fin 11 in the spacer 1, the distance (Th) between the gaps 15 between adjacent spacers 1, and the width (B) of the placement cavity 14 in the spacer 1 (i.e. the width of the battery placement space), the size selection of the above parameters is mainly based on the type and size of the assembled device battery, and for the chemical system with larger volume expansion of the battery during the charge-discharge or long-term use, the interval and the buffer space (Th) can be appropriately increased to reduce the extrusion of the battery and improve the cycle life of the battery, otherwise, the interval and the buffer space (Th) can be reduced and the system space utilization of the battery pack can be further improved. In general, the spacer 1 structure thickness (C) is between 0.1mm and 5mm, preferably 0.5mm; the gap 15 distance (Th) between adjacent spacers 1 is between 0.5mm and 10mm, preferably 3mm; the structural height (H) of the fins 11 in the spacer 1 is generally the same as the shoulder height of the battery, and H is more than or equal to 50mm and less than or equal to 500mm; the width (B) of the placement cavity 14 in the separator 1 is generally the same as the thickness of the battery, 5 mm.ltoreq.B.ltoreq.150 mm.

The surface of the radiator main body made of stainless steel can be subjected to various treatment modes, for example, after insulation treatment is carried out, the surface of a battery loaded in the radiator can be subjected to no insulation coating or spraying treatment, so that the production process of a battery cell is simplified; meanwhile, the insulating layer can be additionally and alternatively improved and optimized, and the functions of heat conduction, heat insulation, buffering, flame retardance and the like are added, so that the protection capability of the fin type radiator main body on the battery is further improved.

The fins 11 may be one of straight strips, wave plates and grid plates, so as to realize separation between the batteries 2, and contact with a large surface of the batteries 2 in the height direction, so that heat is conveniently conducted out and dissipated.

In one embodiment, the fins 11 are straight strips, and the gaps 15 between adjacent spacers 1 are closed to form closed cooling cavities, and each cooling cavity is connected by an external pipeline to form a cooling channel. By sealing the gaps 15 and connecting them in series via the pipe, a liquid flow path is formed in the radiator, and the heat radiation performance of the radiator can be further improved.

As can be seen from the summary of the present embodiment, the fin type heat sink of the present application designs the spacer 1 structure with the placement cavity 14 by utilizing the excellent mechanical properties of the rigid heat conductive material such as stainless steel, and provides the gap 15 between the adjacent spacers 1, and this gap 15 not only can provide a certain elastic modulus in the lateral direction, but also can conduct out the heat generated by the device in the placement cavity 14, thereby protecting the device. In addition, the gaps 15 in the structure can be connected to form a liquid cooling flow channel, so that the heat dissipation performance can be further improved, and the liquid cooling plate 33 in the traditional battery pack structure can be replaced without additionally arranging an external liquid cooling plate 33.

Example 2:

This embodiment describes a battery pack having a structure as shown in fig. 6, including a plurality of batteries 2 and the fin-type heat sink 4 as described in embodiment 1, the plurality of batteries 2 being respectively disposed in the disposition chambers 14.

In the installation cavity 14 of each spacer 1, the two sides of the large surface of the battery 2 are contacted with the fins 11 of the spacer 1, and the poles of the battery 2 are clamped in the pole clamping holes 121 on the bottom plate 12 of the spacer 1. The fins 11 are in direct contact with the large surface of the battery 2 in the height direction to form a heat conduction path, and heat is conducted out through gaps 15 between adjacent spacers 1, so that the heat dissipation capacity of the single battery 2 is effectively enhanced.

The single batteries 2 are assembled in the arranging cavities 14 of the spacers 1 one by one, and as the battery 2 expands to a certain extent in the process of charging and discharging or long-term use, the structure of the application can adapt to the volume change of the battery 2, reduce the extrusion of the battery 2 and prolong the cycle life of the battery. In addition, due to the existence of the fin 11 structure, when the battery cells are out of control, the safety of the adjacent battery cells on the other side of the fin 11 can be protected due to the mechanical strength and high temperature resistance of the stainless steel material.

The battery pack further comprises a liquid cooling plate 33, wherein the liquid cooling plate 33 is arranged on the upper parts of the fin type radiator 4 and the battery 2, and the liquid cooling plate 33 is adhered and fixed with the fin type radiator 4 and the battery 2 through heat conducting glue. The flow channel design of the liquid cooling plate 33 can take many forms, including but not limited to single side entry and exit, double side entry and exit tubular flow channels, etc.; or a planar turbulent flow type flow passage; or microchannel columnar flow to, etc. The refrigerant of the liquid cooling plate 33 may be a single-phase liquid or a gas-liquid two-phase cooling medium.

In this embodiment, the battery pack further includes a lower case 31 and an upper cover 32, the lower case 31 and the upper cover 32 are generally hollow structures or plate structures with openings, connecting edges for fixing and sealing are reserved at edges of the lower case 31 and the upper cover 32, and general connecting manners can be but not limited to manners of bolts, riveting, welding, and the like, the inner case is formed after the upper case and the lower case are mutually covered and sealed, and the fin type radiator 4 and the battery 2 are both sealed and fixed inside the case. The materials of the lower case 31 and the upper cover 32 may be, but not limited to, metal materials such as steel, aluminum, inorganic nonmetallic materials, high-strength organic materials, and multi-layered composite materials.

In order to reliably fix the radiator to the case, a fixing reinforcing end plate 34 is disposed on a side surface of the radiator, the fixing reinforcing end plate 34 is fixedly connected to the side surface of the radiator, an end plate bracket 35 is correspondingly disposed inside the lower case 31, the fixing reinforcing end plate 34 is fixedly connected to the end plate bracket 35, the end plate bracket 35 is used for providing supporting and fixing functions for the fixing reinforcing end plate 34, and a connection manner between the fixing reinforcing end plate 34 and the end plate bracket 35 can be, but is not limited to, a bolt manner, a riveting manner, a bonding manner, a welding manner and the like.

The fin radiator 4 and the lower case 31 are integrated into a whole through the fixing reinforcing end plate 34, the fin radiator 4 and the lower case 31 can be directly fixed through the fixing between the fixing reinforcing end plate 34 and the end plate bracket 35, and the fin radiator 4 and the lower case 31 can also be fixed through a more stable fixing mode, for example, in the embodiment, the fixing mode is to use the fixing edge 16 extending a certain distance from the side edge of the fin radiator 4, the length of the fixing edge 16 is generally between 10mm and 30mm, preferably 10mm, the fixing reinforcing end plate 34 is pressed on the fixing edge 16, and is fixed on the end plate bracket 35 at the bottom of the lower case 31 through bolts and an adhesive; the upper part of the multi-layer folding fin 11 type structural main body is generally flush with the bottom surface or the side surface of the single cell 2, and is fixed and bonded with the liquid cooling plate 33 through structural heat-conducting glue to be integrated into a whole; additionally, the upper and lower fixed reinforcing end plates 34 may be fixed with the liquid cooling plate 33 by bolts. Therefore, a structure for connecting the battery system up and down is formed, the multi-layer folding fin 11 type structural main body replaces the supporting protection effect of the traditional transverse longitudinal beam, the complexity and the material cost of manufacturing and processing are reduced, the space utilization rate and the integration degree of the battery system are greatly improved, the safety performance of the battery system can be improved, and the structural strength, the heat dissipation capacity and the safety performance are optimized in multiple aspects.

The liquid cooling pipeline joint is not required to be arranged in the X direction or the Y direction of the battery pack, and the liquid cooling plate 33 is arranged in the Z direction of the battery pack, so that the batteries 2 can be arranged in a completely released mode in space, and the battery grouping efficiency in the battery pack is greatly improved. When thermal runaway occurs in a certain battery in the battery pack, the pole is arranged downwards, so that solid matters and flue gas sprayed downwards can be led into an independent exhaust channel, the thermal runaway safety risk of the whole battery due to the problems of arc discharge, spark and the like caused by electrical pollution in a high-pressure environment is avoided, meanwhile, the separation design of the high-voltage electrical connection of the liquid cooling plate 33 and the battery positioned at the lower part of the radiator can be realized, and the short circuit safety risk caused by the damage and leakage of the liquid cooling plate 33 due to collision is avoided.

The plate structure of the fixed reinforcing end plate 34 can have various forms, including but not limited to cuboid, arc cuboid with protruding edges, saw-tooth cuboid with weight reducing grooves dug at the upper end, and the like, while the inside of the end plate structure is provided with weight reducing holes, the hole channel shape can have various shapes, including but not limited to square, round, diamond, triangle, and the like, the light weight design is realized while the structural strength is ensured, the end plate is fixedly connected and matched with the end plate bracket 35 of the lower box 31, and in addition, the positioning grooves can be arranged in the fixed reinforcing end plate 34 to assist the matched positioning with the end plate bracket 35 or other positioning columns in the box, and the positioning grooves can have various shapes, including but not limited to round, square, pentagon, hexagon, and the like.

In this embodiment, a battery pack constructed by a square battery is taken as an example. Each battery 2 is placed in the placement cavity 14 of the fin radiator 4 respectively, for a square battery monomer, the square battery monomer can be placed between two layers of fins 11 in an inverted mode, the bottom of the battery 2 loaded in the fin radiator 4 is flush with the upper portion of the radiator main body, the battery 2 and the liquid cooling plate 33 are fixed and bonded into a whole through structural heat-conducting glue, positive and negative pole poles are clamped in pole clamping holes 121 on the bottom plate 12 of the spacer 1, meanwhile, smoke exhaust holes 122 on the bottom plate 12 of the radiator are attached to explosion-proof valve openings of the battery 2, when the battery 2 monomer is in thermal runaway, solid substances, electrolyte and high-temperature smoke can be sprayed downwards through the smoke exhaust holes 122 on the bottom plate 12 of the radiator, and the sprayed solid substances, the electrolyte, the high-temperature smoke and the like can be led into independent smoke exhaust channels 38 arranged on the lower box 31, so that the thermal runaway risk of the whole battery 2 caused by problems such as arc and spark in electrical pollution in a high-pressure environment is avoided, and meanwhile, the space utilization rate in the height direction is effectively improved.

The assembly mode of the battery 2 in the fin radiator 4 is not limited in directivity inside the battery pack, and can be designed along the X direction or the Y direction, and only the size and the folding layer number (namely the size and the number of the spacers 1) of the fin radiator 4 need to be adjusted; meanwhile, an internal frame support is added to the box body of the battery pack, and then the 2 nd layer fin type radiator 4 can be placed in the Z direction and fixed on the internal frame support, so that the 2 nd layer battery can be arranged, and the internal battery expansion is realized.

The fin type radiator 4 and the battery 2 are assembled in a mode that only 1 battery can be placed in the placement cavity 14 of the single spacer 1, namely, the two sides of the large surface of the battery are contacted with the fins 11 of the spacer 1; or 2 battery cells are placed in a single separator 1, that is, a state in which the battery cells are placed back to back is formed in the placement cavity 14, and then the outer large surfaces of the 2 battery cells are in contact with the fins 11 of the separator 1.

The size and the number of folding layers of the spacer 1 in the fin type radiator 4 are related to the size of the battery system and the number of battery cells, in general, the relation between the width of the structural body of the multi-layer folding fin 11 and the size of the battery system is generally 90% or more W/w_pack or less 99% in the X direction, 90% or more L/l_pack or less 99% in the Y direction and 85% or less H/h_pack or less 95% in the Z direction, and the above preferred design is integrated, and the volumetric grouping efficiency of the battery system of the fin type radiator 4 is 70% -88% so as to greatly improve the current situation that the volumetric grouping efficiency of the battery system in industry is not high.

The positive and negative poles of the battery 2 are clamped in the pole clamping holes 121 of the fin radiator 4 and are exposed out of the bottom plate 12 for a certain distance, and the battery pack is welded with the positive and negative poles of the battery through the high-voltage overcurrent row 37, so that each battery 2 in the battery pack is connected in series and in parallel, and finally a battery system with a certain voltage is formed.

In addition, the lower case 31 is internally provided with a plurality of fixing brackets 36, the direction of the fixing brackets 36 is mutually perpendicular to the direction of the fins 11 of the upper fin type radiator 4 and is in direct contact with the lower part of the fin type radiator 4, the fixing brackets 36 and the fin type radiator 4 can be connected by adopting an active connection mode or a passive connection mode, the active connection mode can be used for gluing on the fixing brackets 36 and bonding with the lower part of the upper fin type radiator 4 into a whole, and the passive connection mode is used for fixing the main body of the fin type radiator 4 between the fixing brackets 36 and the liquid cooling plate 33 by virtue of the reinforcing end plate.

The structure of the battery pack is not limited to the battery chemical system, and may be a primary or secondary battery, a lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like.

Example 3:

this embodiment describes an electrical device comprising a battery pack as described above. The present embodiment is not limited to use with vehicles, boats, aircraft, or other powered devices that use batteries as a power source.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (14)

1. A fin radiator, comprising:

a plurality of spacers (1), each spacer (1) is provided with a placement cavity (14) for placing devices, and a gap (15) is reserved between two adjacent spacers (1);

And the connecting parts (13) are connected with two adjacent spacers (1) through the connecting parts (13).

2. The fin radiator according to claim 1, wherein the spacer (1) includes two fins (11) and a bottom plate (12), and the two fins (11) are fixed to the bottom plate (12) to form the installation cavity (14) having an open top.

3. The fin-type heat sink according to claim 2, wherein the placement cavity (14) of the spacer (1) is used for placing the battery (2), and the bottom plate (12) is provided with a post clamping hole (121).

4. A fin radiator according to claim 3, wherein the base plate (12) is provided with smoke discharge holes (122).

5. The fin-type heat sink according to claim 2, wherein the fins (11) are one of straight strips, corrugated strips, and mesh strips.

6. A fin radiator according to claim 2, wherein the fins (11) are straight strips and gaps (15) between adjacent spacers (1) are closed to form closed cooling chambers, each of which is connected by an external pipe to form a cooling channel.

7. The fin-type radiator according to claim 2, wherein the spacers (1) are U-shaped grooves, and each spacer (1) is arranged in parallel and sequentially connected through a connecting portion (13) to form the fin-type radiator, and the fin-type radiator is rectangular parallelepiped with a plurality of placement cavities (14).

8. The fin radiator according to any one of claims 1 to 7, wherein the distance of the gap (15) is 0.5 to 10mm.

9. The fin radiator of any one of claims 1 to 7, wherein the fin radiator is made of a stainless steel material.

10. Battery pack comprising a number of batteries (2), characterized by comprising a fin-type heat sink (4) according to any one of claims 1 to 9, the number of batteries (2) being respectively arranged in a housing cavity (14).

11. The battery pack according to claim 10, wherein both sides of the large surface of the battery (2) are in contact with the fins (11) of the spacer (1), and the poles of the battery (2) are clamped in the pole clamping holes (121) on the bottom plate (12) of the spacer (1).

12. The battery pack according to claim 11, further comprising a liquid cooling plate (33), wherein the liquid cooling plate (33) is disposed on the fin radiator (4) and the upper portion of the battery (2), and the liquid cooling plate (33) is bonded and fixed to the fin radiator (4) and the battery (2) by a heat conductive adhesive.

13. The battery pack according to any one of claims 10 to 12, comprising a case, wherein the fin-type heat sink (4) and the battery (2) are both sealed and fixed inside the case, and a smoke exhaust channel (38) is provided on the bottom surface of the case, and a high-voltage overcurrent row for externally connecting an electric circuit is provided between the bottom surface of the fin-type heat sink (4) and the case.

14. An electrical device comprising a battery pack as claimed in any one of claims 10 to 13.