CN214672793U - High-speed electric motorcycle battery pack with liquid cooling - Google Patents

Abstract

The utility model discloses a high-speed electric motorcycle battery pack with liquid cooling, which comprises a first aluminum shell, a second aluminum shell and a battery pack assembly, wherein the first aluminum shell and the second aluminum shell are mutually matched to form a cavity structure with a cavity inside, the battery pack assembly is wrapped in the cavity, and the top of the first battery module is connected with a first insulating glass fiber board; the bottom of the first battery module is connected with the first heat-conducting silica gel sheet, a liquid cooling plate is arranged below the first heat-conducting silica gel sheet, a second heat-conducting silica gel sheet is arranged below the liquid cooling plate, a second battery module is arranged below the second heat-conducting silica gel sheet, and a second insulating glass fiber plate is arranged below the second battery module. The utility model discloses a battery package radiating efficiency is high, and is longe-lived, can avoid the whole impaired problem of battery module to take place.

Description

High-speed electric motorcycle battery pack with liquid cooling

Technical Field

The utility model relates to a battery package technical field specifically is a take high-speed electric motorcycle car battery package of liquid cooling.

Background

The grouping mode of the current new energy power battery pack is mainly divided into two types: firstly, forming lithium batteries into finished product modules, and then grouping the finished product modules to form a power battery PACK, wherein the grouping mode has about 30-40% of energy loss, and the loss degree is different according to the difference of grouping technologies, so that the power battery PACK has the advantages of low detachable post-maintenance cost, low energy conversion rate, low grouping efficiency and high production cost; the second is, walk the line mode directly with the structure glue with the box bonding with electric core according to high pressure, and this kind of mode in groups has about 15% ~ 20% energy loss, and is same according to the difference of technology in groups, and the loss degree is different, and this mode in groups advantage is that energy conversion is high, but whole package later maintenance cost is high, and any single electric core goes wrong, because the basic battery package of the characteristic that the structure was glued needs whole to scrap. In addition, the battery pack can generate heat in the use process, the conventional high-speed electric motorcycle battery pack can naturally dissipate heat, a large amount of heat is generated during high-rate discharge, and if the heat dissipation is not timely, the service life of the battery pack is greatly reduced for a long time. And if the heat is discharged in a large multiplying power manner and is dissipated out in time, the set protection temperature is reached, the electric massager can continuously give an alarm, the customer experience is poor, and the safety problem is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take high-speed electric motorcycle car battery package of liquid cooling to solve the problem that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the battery pack assembly comprises a first battery module, wherein the top of the first battery module is connected with a first insulating glass fiber board; the bottom of the first battery module is connected with a first heat-conducting silica gel sheet, a liquid cooling plate is arranged below the first heat-conducting silica gel sheet, a second heat-conducting silica gel sheet is arranged below the liquid cooling plate, a second battery module is arranged below the second heat-conducting silica gel sheet, and a second insulating glass fiber plate is arranged below the second battery module;

the first battery module and the second battery module have the same structure and composition;

the first battery module comprises a first upper bracket and a first lower bracket, and a plurality of screw holes are formed in the positions, matched and assembled, of the first upper bracket and the first lower bracket;

the second aluminum shell comprises a second aluminum shell body, a module fixing screw hole is formed in the bottom of the second aluminum shell body, a module screw rod is locked into the screw rod hole and the fixing screw hole, and the first battery module and the second battery module are fixed into the second aluminum shell.

Preferably, in this technical solution, the first insulating glass fiber board, the first battery module, the first heat-conducting silica gel sheet, the liquid cooling plate, the second heat-conducting silica gel sheet, the second battery module, and the second insulating glass fiber board are connected by glue between the two adjacent boards.

Preferably, in the technical scheme, a water head assembly is further arranged on one side face of the second aluminum shell, which is short in outer wall, and comprises an aluminum water distribution head, an outer liquid cooling inlet and an outer liquid cooling outlet; the aluminum water distribution head is fixed to the outer wall of the second aluminum shell body through a second screw, and the outer liquid cooling inlet and the outer liquid cooling outlet are communicated with the liquid cooling inlet and the liquid cooling outlet of the liquid cooling plate respectively.

Preferably, in this technical solution, the first upper bracket includes a first upper bracket body, and the first upper bracket body is provided with a plurality of groups of accommodating ports arranged in an array.

Preferably, in the technical scheme, an aluminum bar is arranged at the top of the first upper bracket body, and the shape of the aluminum bar is matched with the cell array; and a voltage acquisition board is arranged on the aluminum row and used for acquiring the voltage of the battery cell.

Preferably, in this embodiment, the first lower bracket includes a first lower bracket body, the first lower bracket body is provided with a plurality of core slots, and the arrangement of the plurality of core slots corresponds to the arrangement of the receiving openings of the first upper bracket.

Preferably, in this embodiment, the screw hole is composed of a first rod hole provided in the first upper bracket and a second rod hole provided in the first lower bracket.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses a first aluminum hull and second aluminum hull form through die casting process, and are corrosion-resistant, ageing-resistant, and the product integrated level is high, have greatly simplified the assembling process, the time of having practiced thrift. The outer surfaces of the first aluminum shell and the second aluminum shell are respectively provided with the radiating fins, the fins and wind form an angle of 22-30 degrees when the high-speed electric motorcycle runs normally, and when the wind impacts the fins, the heat conducted out by the battery can be actively radiated, so that the radiating efficiency is high.

2. The utility model discloses an inside big plane of aluminum hull and electric core indirect contact, the heat of electric core is conducted to the inside big plane of aluminum hull through the higher silica gel piece of coefficient of heat conductivity behind the casting glue samming for the temperature of battery package can steadily transmit, avoids the emergence of suddenly hot problem, has effectively improved the uniformity of electric core temperature and the life-span of electric core.

3. The utility model discloses the heat of battery package module electricity core conducts to middle water-cooling board (liquid-cooling board) through the higher silica gel piece of coefficient of heat conductivity behind the casting glue samming, and the water-cooling board is brought the heat to the radiator (the radiator can have the fan) through business turn over liquid cooling mouth again, produces a large amount of heats when big multiplying power discharges, can dispel the heat fast, has effectively improved the uniformity of electric core temperature and the life-span of electric core like this.

4. The insulating glass fiber plate is arranged between the battery module and the aluminum shell, so that the battery pack has better electrical insulation and mechanical property, and the service life of the battery pack is prolonged; meanwhile, the problem that the whole battery pack needs to be scrapped due to the characteristic of the structural adhesive is avoided.

Drawings

Fig. 1 is an exploded view of an aluminum-case battery pack according to the present invention;

fig. 2 is a schematic structural diagram of a first aluminum case of the present invention;

fig. 3 is a schematic structural view of the battery module of the present invention;

fig. 4 is an exploded view of the battery module of the present invention;

fig. 5 is a schematic structural view of a first upper bracket of the present invention;

fig. 6 is a schematic structural view of the first lower bracket of the present invention;

fig. 7 is a schematic structural view of a second aluminum case of the present invention;

fig. 8 is a schematic perspective view of the aluminum-case battery pack of the present invention;

fig. 9 is a schematic diagram of the external radiator of the aluminum-case battery pack of the present invention.

In the figure: 1-a first screw; 2-a first aluminum shell; 21-a first aluminum housing body; 22-first cooling fin; 23-a first mounting hole; 24-a first fixation hole; 25-a first positioning column; 26-a first fixed via; 3-a die set screw; 41-a first insulating glass fiber board; 42-a second insulating glass fiber board; 51-a first battery module; 52-a second battery module; 510-cell aluminum wire; 511-aluminum row; 512-a first upper bracket; 513 — a first lower rack; 514-a flow divider; 515-electric core; 61-a first heat conducting silica gel sheet; 62-a second heat-conducting silica gel sheet; 71-water-cooling plate body; 72-a liquid cooled inlet; 73-liquid cooling outlet; 8-a second aluminum shell; 81-a second aluminum housing body; 82-a second mounting hole; 83-second fixed via; 84-a stop bar; 85-module fixing screw holes; 86-second cooling fin; 87-external conductive member; 881-aluminum water diversion head; 882-external liquid cooling inlet; 883-external liquid-cooled outlet; 884-second screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-9, a high-speed electric motorcycle battery pack with liquid cooling includes a first aluminum case 2, a second aluminum case 7, and a battery pack assembly; the first aluminum shell 2 and the second aluminum shell 7 are mutually matched to synthesize a cavity structure, the cavity structure is internally provided with a cavity, the outside of the cavity is provided with a battery pack shell, and a battery pack assembly is wrapped in the cavity. Further preferably, the shapes of the first aluminum shell 2 and the second aluminum shell 7 are different according to the installation environment of the battery pack, for example, the battery pack is installed on a motorcycle by adopting an irregular structure as shown in fig. 1-5, and can be in a column shape or other shapes when installed on an electric vehicle or a bicycle. Further, in order to increase the heat dissipation rate of the battery pack and prolong the service life of the battery pack, the utility model discloses well first aluminum hull 2 and second aluminum hull 7 are formed by aluminum sheet die-casting.

Further, referring to fig. 1 and 2 in detail, the first aluminum shell 2 includes a first aluminum shell body 21, the first aluminum shell body 21 has a first hollow groove therein, and a first heat dissipating fin 22 is disposed on an outer side surface opposite to the first hollow groove; a plurality of first mounting holes 23 are formed in the first heat dissipating wing 22, and a plurality of through holes distributed in multiple points are formed by the first mounting holes 23 and the first positioning posts 25 arranged at the side of the first heat dissipating wing, so as to fix a dust cover (not shown in the figure) of the first heat dissipating wing 22; a plurality of first fixing via holes 26 are formed around the first aluminum case body 21 as needed, and the first aluminum case 2 and the second aluminum case 7 are fixed by locking first screws 1 into the first fixing via holes 26; the end face of the first hollow groove is also provided with at least three lifting lugs, each lifting lug is provided with a first fixing hole 24, and the first fixing holes are used for locking pieces such as screws and the like after being matched with corresponding hole positions on the frame so as to fix the battery pack on the frame.

Furthermore, the first radiating fins 22 are preferably strip-shaped fins which are 22-30 degrees from the horizontal wind surface (motion horizontal plane), namely an angle a shown in fig. 8, and the size of the angle a is preferably 22-30 degrees.

Further, in the present embodiment, the number of the first fixed via holes 26 is preferably set to 8.

Referring to fig. 1 again, the battery pack assembly of the present invention includes a first battery module 51, wherein the top of the first battery module 51 is connected to the first insulating glass fiber plate 41; the bottom of the first battery module 51 is connected with the first heat-conducting silicone sheet 61, a liquid cooling plate is arranged below the first heat-conducting silicone sheet 61, a second heat-conducting silicone sheet 62 is arranged below the liquid cooling plate, the second battery module 52 is arranged below the second heat-conducting silicone sheet 62, and a second insulating glass fiber plate 42 is arranged below the second battery module 52. Further, the first insulating glass fiber plate 41, the first battery module 51, the first heat conducting silicone sheet 61, the liquid cooling plate, the second heat conducting silicone sheet 62, the second battery module 52 and the second insulating glass fiber plate 42 are connected by glue. Further, the first battery module 51 and the second battery module 52 are connected in series, and are implemented by using the prior art.

Further, the liquid cooling plate comprises a water cooling plate body 71, and a liquid cooling inlet 72 and a liquid cooling outlet 73 which are arranged at one end of the water cooling plate body 71, and cold liquid is put into the liquid cooling inlet 72 to take away heat and is sent out from the liquid cooling outlet 73, so that heat dissipation of the first battery module 51 and the second battery module 52 is realized.

Further, the first battery module 51 and the second battery module 52 have the same structure and composition (only the positive electrode and the negative electrode of the battery cell are disposed differently), and referring to fig. 3 and 4 in detail, the first battery module 51 includes a first upper support 512, a first lower support 513, and a battery cell 515. As shown in fig. 5, the first upper bracket 512 includes a first upper bracket body 5120, and a plurality of groups of receiving openings 5121 arranged in an array are formed in the first upper bracket body 5120, so that the positive electrode of the battery cell 515 extends out. An aluminum bar 511 is arranged at the top of the first upper bracket body 5120, and the shape of the aluminum bar 511 is matched with the cell array, so that the cell aluminum wire 510 can be easily welded to the aluminum bar 511; the aluminum row 511 is further provided with a voltage collecting plate 510 for collecting the voltage of the battery cell 515. In this embodiment, as shown in fig. 6, the first lower bracket 513 includes a first lower bracket body 5130, a plurality of battery cell slots 5131 are disposed in the first lower bracket body 5130 for fixing the negative electrodes of the battery cells 515, and the arrangement of the battery cell slots 5131 corresponds to the arrangement of the accommodating openings 5121.

The first lower support 513 is further provided with a shunt 514, and the shunt 514 is electrically connected with the aluminum row 511 by using the prior art. Further, a plurality of screw holes 516 are formed in the positions where the first bracket 512 and the first lower bracket 513 are assembled in a matching manner, preferably, 8 screw holes 516 are formed in the embodiment and distributed around the brackets, and since the first upper bracket 512 and the first lower bracket 513 are respectively opened, the screw holes 516 are composed of a first rod hole 5123 formed in the first upper bracket 512 and a second rod hole 5133 formed in the first lower bracket 513; locking the module screw 3 into the screw hole 516 can firmly fix the first battery module and the second battery module into the second aluminum case 8.

Referring to fig. 7 in detail, the second aluminum shell 8 includes a second aluminum shell body 81, the second aluminum shell body 81 has a second hollow groove therein, and a second heat dissipating fin 86 is disposed on an outer side surface opposite to the second hollow groove; a plurality of baffle bars 84 are arranged in the second hollow groove and used for separating the battery module 5 from the bottom of the second aluminum shell body 81 to form a gap, so that the flow of hot air is accelerated and the hot air is dispersed. The periphery of the outer wall of the second aluminum shell body 81 is provided with a plurality of second fixing via holes 83, the second fixing via holes 83 correspond to the first fixing via holes 26 of the first aluminum shell body 21, and the first aluminum shell 2 and the second aluminum shell 8 are closed by locking the first screws 1 into the first fixing via holes 26 and the second fixing via holes 83.

Further, a second mounting hole 82 is provided at the bottom of the second aluminum case body 81 for mounting and fixing the second aluminum case 8 to a motorcycle or other vehicle body.

Further, the bottom of the second aluminum case body 81 is further provided with a module fixing screw hole 85, and the first battery module 51 and the second battery module 52 are fixed in the second aluminum case 8 after the screw hole 516 and the fixing screw hole 85 are locked into the module screw 3.

Further, an external conductive component 87 is further disposed on a long side of the outer wall of the second aluminum case body 81, and is used for electrically connecting with the outside. A further preferred external conductive assembly 87 includes at least a plug and wire interface.

Further, a water head assembly is further arranged on one side surface of the second aluminum shell body 81, which is short in outer wall, and comprises an aluminum water distribution head 881, an external liquid cooling inlet 882 and an external liquid cooling outlet 883; wherein, aluminium water knockout head 881 passes through second screw 884 to be fixed to second aluminum hull body 81 outer wall, and outer liquid cooling import 882 and outer liquid cooling export 883 communicate with liquid cooling import 72 and liquid cooling export 73 of liquid cooling board respectively.

During the equipment, carry out the equipment of first battery module, second battery module earlier, then electric core is glued and is sealed, assembles insulating glass fiber board and heat conduction silica gel piece after the battery module equipment is accomplished, then assembles to the equipment of accomplishing the battery package subassembly with the liquid cooling board, assembles the battery package subassembly in the second aluminum hull, locks the module screw rod, buckles first aluminum hull again, locks first screw, accomplishes the equipment of whole battery package.

Further, when the battery pack is mounted on a motorcycle, the battery pack can be externally connected with a radiator with a fan as shown in fig. 8, when the motorcycle is driven at high speed, and a temperature sensor in an external controller detects that the internal temperature of the battery pack reaches 32 ℃, the external controller controls a water cooling system to be opened to send cold night into a liquid cooling plate for heat dissipation, and at the moment, the radiator dissipates heat by blowing air when the motorcycle is driven and stops when the temperature is reduced to 27 ℃. When the temperature continuously rises to 35 ℃, the external controller controls the fan of the radiator to be opened to absorb heat, and the fan and the air generated during the electric motorcycle running synchronously dissipate heat of the radiator, so that the rapid cooling is realized. Further, the external controller is implemented by using a temperature control switch in the prior art.

To sum up, the utility model discloses the heat of battery package module electricity core conducts to middle water-cooling board (liquid-cooling board) through the higher silica gel piece of coefficient of heat conductivity behind the casting glue samming, and the water-cooling board is brought the heat to the radiator (the radiator can have the fan) through business turn over liquid cooling mouth again, produces a large amount of heats when big multiplying power discharges, can dispel the heat fast, has effectively improved the uniformity of electric core temperature and the life-span of electric core like this. An insulating glass fiber plate is arranged between the battery module and the aluminum shell, so that the battery pack has better electrical insulation and mechanical properties, and the service life of the battery pack is prolonged; meanwhile, the problem that the whole battery pack needs to be scrapped due to the characteristic of the structural adhesive is avoided.

It should be noted that, in this document, technical contents and connection relations which are not described are all implemented by using the prior art. Moreover, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A high-speed electric motorcycle battery pack with liquid cooling comprises a first aluminum shell, a second aluminum shell and a battery pack assembly, wherein the first aluminum shell and the second aluminum shell are mutually matched to form a cavity structure with a cavity inside, and the battery pack assembly is wrapped in the cavity; the bottom of the first battery module is connected with a first heat-conducting silica gel sheet, a liquid cooling plate is arranged below the first heat-conducting silica gel sheet, a second heat-conducting silica gel sheet is arranged below the liquid cooling plate, a second battery module is arranged below the second heat-conducting silica gel sheet, and a second insulating glass fiber plate is arranged below the second battery module;

the first battery module and the second battery module have the same structure and composition;

the first battery module comprises a first upper bracket and a first lower bracket, and a plurality of screw holes are formed in the positions, matched and assembled, of the first upper bracket and the first lower bracket;

the second aluminum shell comprises a second aluminum shell body, a module fixing screw hole is formed in the bottom of the second aluminum shell body, a module screw rod is locked into the screw rod hole and the fixing screw hole, and the first battery module and the second battery module are fixed into the second aluminum shell.

2. The high-speed electric motorcycle battery pack with liquid cooling of claim 1, wherein the first insulating glass fiber board, the first battery module, the first heat-conducting silicone sheet, the liquid cooling board, the second heat-conducting silicone sheet, the second battery module and the second insulating glass fiber board are connected by glue.

3. The high-speed electric motorcycle battery pack with liquid cooling of claim 1, wherein a water head assembly is further arranged on one short side of the outer wall of the second aluminum shell, and the water head assembly comprises an aluminum water dividing head, an outer liquid cooling inlet and an outer liquid cooling outlet; the aluminum water distribution head is fixed to the outer wall of the second aluminum shell body through a second screw, and the outer liquid cooling inlet and the outer liquid cooling outlet are communicated with the liquid cooling inlet and the liquid cooling outlet of the liquid cooling plate respectively.

4. The high-speed electric motorcycle battery pack with liquid cooling of claim 1, wherein the first upper bracket comprises a first upper bracket body, and a plurality of groups of containing ports arranged in an array are formed in the first upper bracket body.

5. The high-speed electric motorcycle battery pack with liquid cooling of claim 4, wherein the top of the first upper bracket body is provided with an aluminum bar, and the shape of the aluminum bar is matched with the battery cell array;

and a voltage acquisition board is arranged on the aluminum row and used for acquiring the voltage of the battery cell.

6. The high-speed electric motorcycle battery pack with liquid cooling of claim 1, wherein the first lower bracket comprises a first lower bracket body, a plurality of electric core grooves are arranged in the first lower bracket body, and the arrangement of the plurality of electric core grooves corresponds to the arrangement of the accommodating ports of the first upper bracket.

7. The high-speed electric motorcycle battery pack with liquid cooling of claim 1, wherein the screw hole is composed of a first rod hole provided at the first upper bracket and a second rod hole provided at the first lower bracket.

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