WO2016013721A1

WO2016013721A1 - Air-cooling-based sealed battery pack structure

Info

Publication number: WO2016013721A1
Application number: PCT/KR2014/010620
Authority: WO
Inventors: 김수훈
Original assignee: 티에스 주식회사
Priority date: 2014-07-23
Filing date: 2014-11-06
Publication date: 2016-01-28
Also published as: KR101588572B1

Abstract

The present invention relates to an air-cooling-based sealed battery pack structure. The present invention comprises: a battery module assembly (BMA) (10) comprising a plurality of battery cells (11); a primary sealing housing (20a) of which an upper object and a lower object are formed as a hexahedral shape having an open upper side and which is formed for primary sealing of the plurality of battery cells (11) which come in contact with a primary heat sink (20) and a secondary cold sink (30); a secondary sealing housing (30a) of which an upper object and a lower object are formed as a hexahedral shape having an open upper side and covering the outer peripheral sides of the primary sealing housing (20a) and which is formed for secondary sealing of the plurality of battery cells (11) which come in contact with the primary heat sink (20) and the secondary cold sink (30); and a Peltier element (50) which is inserted into an insertion groove (62) inside a cooling fin housing (61) having formed first cooling fins (60) on the lower side thereof, of which the upper part comes in contact with the secondary cold sink (30) through a cold block for cooling concentration (40), and which is formed inside a structure sealed by means of the secondary sealing housing (30a) and the cooling fin housing (61).

Description

Air-cooled cooling based sealed battery pack structure

The present invention relates to an air-cooled cooling-based hermetic battery pack structure, and more specifically, to provide a new concept air-cooled heat dissipation method using a Peltier element to switch from the existing water-cooled to air-cooled cooling method, and to radiate heat in an enclosed space. It relates to an air-cooled cooling-based hermetic battery pack structure.

1A and 1B are views illustrating a state in which a battery pack is installed in a commercial vehicle, and FIG. 2 is a view illustrating a commercial vehicle in which a battery pack is mounted. In this case, in a commercial vehicle including a battery pack 1 other than a traction motor a2 and a motor drive a1, the battery pack 1 requires a watertight structure. That is, in the case of a commercial vehicle, driving is often performed in a situation where the unpaved road and the driving conditions are worse than the passenger vehicle. In the case of a passenger vehicle, the battery pack 1 is mounted in the trunk, but in the case of a commercial vehicle, the battery pack 1 is positioned below the vehicle as shown in FIGS. 1A and 1B.

The position of the battery pack 1 in a commercial vehicle is closer to the road surface than a passenger vehicle, and the device protecting the battery pack 1 is made of only a battery pack case, which requires a more robust and waterproof design.

However, a problem of the cooling structure due to the heat generation of the battery pack 1 occurs. When the design is robust to waterproof and dustproof, the battery pack (1) is designed as a sealed structure. Heat is generated due to the characteristics of the battery, and the battery cell and battery managament system (BMS) are vulnerable to heat and directly affect the lifespan. Therefore, a device for heat dissipation is essential.

The currently manufactured commercial vehicle battery pack 1 is cooled by water cooling, but there is a limit in that a separate water cooling pump, a radiator, a cooling line, and the like must be separately installed for heat dissipation of the battery pack.

More specifically, Figure 1c is a view showing a water-cooled HEV lithium ion battery pack according to the prior art. The HEV vehicle lithium ion battery generates a lot of heat due to the instantaneous use of high current and the life of the cell is affected by heat. Therefore, the heat dissipation system is a prerequisite. Since the water pipe is passed inside the battery pack, there is a risk of fire (safety problems) when the water pipe is broken, there was a problem that requires a new power source for driving a separate water pump. In addition, there is a need for a separate coolant and the cost of replacing the coolant, a separate FAN for cooling the coolant, a radiator for cooling the coolant, and additional accessories for cooling the battery pack. Increasing costs and increasing maintenance costs arise.

Accordingly, in the related art field, there is a demand for technology development of a battery pack for cooling by air cooling without a separate water cooling system.

[Related Technical Documents]

1. Apparatus for containing battery pack and apparatus for cooling power storage battery pack using it (Patent Application No. 10-2011-0038383)

2. Apparatus for cooling secondary battery pack for vehicle (Patent Application No. 10-2010-0078427)

3. Battery pack cooler using heat-pipes (Patent Application No. 10-2010-0091904)

The present invention is to solve the above problems, in consideration of the temperature rise through the air-cooled cooling method that can replace the water cooling system for cooling the battery pack in a commercial vehicle quantitative target 42 It is to provide a sealed battery pack structure based on air-cooled cooling to achieve below the ℃.

In addition, the present invention, because the battery management system (BMS) and the battery cell (cell) should be operated in a harsh environment such as vibration, temperature, humidity of the vehicle, as well as heat dissipation, heat and dust by the sealed and insulated structure, etc. To provide an air-cooled cooling-based sealed battery pack structure to block the.

In addition, the present invention is to provide an air-cooled cooling-based sealed battery pack structure to provide a new concept air-cooled heat dissipation method using a Peltier element to switch from the existing water-cooled to air-cooled cooling method, and to allow heat radiation in a closed space. .

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an air-cooled cooling-based sealed battery pack structure according to an embodiment of the present invention includes a battery module assembly (BMA) 10 including a plurality of battery cells 11; A hexahedron shape with an open top surface is formed of an upper object and a lower object, and formed for primary sealing on a plurality of battery cells 11 in contact with the primary heat sink 20 and the secondary cold sink 30. Primary sealed housing 20a; A plurality of battery cells contacted with the primary heat sink 20 and the secondary cold sink 30 by forming an hexahedral shape having an open upper surface surrounding the outer circumferential surface of the primary hermetic housing 20a as an upper object and a lower object ( A secondary hermetic housing 30a formed for secondary closure to 11); The lower surface is inserted into the insertion groove 62 in the cooling fin housing 61 formed with the first cooling fin 60, the upper portion and the secondary cold sink 30 through the cold concentrating cold block 40 A Peltier element 50 in contact with and formed in a sealed structure by the secondary hermetic housing 30a and the cooling fin housing 61; It includes.

At this time, the present invention, the structure that supports the lower surface of the plurality of battery cells 11 in direct contact with the plurality of battery cells 11 to provide the effect of lowering the temperature of the plurality of battery cells 11 primarily plate shape Primary heat sink 20 formed as; And a lower surface of the primary heat sink 20 and formed in a hexahedral shape in which the upper surface, the front surface, and the rear surface are open, thereby lowering the temperature to the second through heat generation for the plurality of battery cells 11. Tea cold sink 30; It further includes.

In addition, the cold concentrating cold block 40 is formed in a rectangular plate shape in contact with the secondary hermetic housing 30a, and preferably has a structure in contact with the Peltier element 50 in the lower portion thereof.

In addition, the cooling fin housing 61 includes a first insertion end 61a for inserting the secondary hermetic housing 30a to a predetermined height therein, a BMS 2, a BDU 3, a power supply and a control plug. It is preferable to be divided into the 2nd insertion end 61b for mounting (4), and to form an hexahedron shape in which the upper surface was opened.

In addition, the predetermined height is inserted into the insertion groove 62 of the first insertion end 61a when inserted into the first insertion end 61a on the cooling fin housing 61 of the secondary hermetic housing 30a. It is preferred that the Peltier element 50 and the upper surface of the laminated structure of the cold concentrating cold block 40 thereon is in contact with the upper surface.

The battery cell 11 is a HEV vehicle lithium ion battery cell, which is sealed and insulated by the secondary hermetic housing 30a to prevent the inflow of high heat from the outside and is cooled by the Peltier element 50. It is desirable to maintain the temperature of the interior.

In addition, the first cooling fins 60 are formed on the lower surface of the housing 61 for cooling fins such that a plurality of plate-shaped heat dissipation fins are faced downwardly at equal intervals, so that the first cooling fins 60 are in contact with the outside air while driving the vehicle. It is preferably formed for heat exchange.

In addition, each of the plurality of battery modules 11u connected in series constituting the BMA 10 has second cooling fins on both sides of the cell cartridge 11a that divides the plurality of battery cells 11 in each battery module 11u. It is preferable to include (11b).

In addition, the second cooling fins 11b face the direction orthogonal to both sides of the battery module 11u at a position in direct contact with all of the plurality of battery cells 11 in one battery module 11u. It is preferable that a plurality of plate-shaped heat-dissipating fins formed so as to be formed at evenly spaced intervals.

The air-cooled cooling-based hermetic battery pack structure according to an embodiment of the present invention, the temperature inside the battery pack in consideration of the temperature rise through the air-cooled cooling method that can replace the water cooling system for cooling the battery pack in a commercial vehicle To achieve below the quantitative target of 42 ° C.

In addition, the air-cooled cooling-based sealed battery pack structure according to another embodiment of the present invention, because the battery management system (BMS) and the battery cell (cell) should be operated in a harsh environment, such as vibration, temperature, humidity of the vehicle as well as heat radiation In addition, the sealed and insulated structure provides an effect of blocking external heat and dust.

In addition, the air-cooled cooling-based hermetic battery pack structure according to another embodiment of the present invention provides a new concept air-cooled heat dissipation method using a Peltier element to switch from the conventional water-cooled to the air-cooled cooling method and to radiate heat in an enclosed space. To provide the effect.

1A and 1B are views illustrating a state in which a battery pack is mounted in a commercial vehicle, and FIG. 1C is a view illustrating a water-cooled HEV lithium ion battery pack according to the related art.

2 is a view generally showing a commercial vehicle equipped with a battery pack.

3 is a view showing the components inside the sealed battery pack 1 of the air-cooled cooling according to an embodiment of the present invention.

4 is a view showing the Peltier element 50 used in the air-cooled cooling-based hermetic battery pack 1 of FIG.

5 is a view showing a coupling relationship between the components of the air-cooled cooling-based hermetic battery pack 1 according to an embodiment of the present invention.

6 is a view showing the structure of the battery cell 11 and the second cooling fin (11b) of the battery module assembly (BMA) 10 constituting the air-cooled cooling-based hermetic battery pack 1 according to the present invention.

FIG. 7 is a perspective view (FIG. 7A) and a cross-sectional view (FIG. 7B) illustrating a structure of a second cooling fin 11b directly contacting the battery cell 11 constituting the BMA 10 of FIG. 6.

FIG. 8 is a diagram illustrating the structure of the BMA 10 of FIG. 6.

FIG. 9 is a diagram illustrating a thermal flow state of the BMA 10 of FIG. 6.

10 is a view showing the configuration of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based hermetic battery pack (1) according to the present invention.

FIG. 11 is a view illustrating a thermal flow state of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based sealed battery pack 1 of FIG. 10.

12 and 13 are cross-sectional views of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based sealed battery pack 1 of FIG. 10.

FIG. 14 is a view illustrating a sealed state of a commercial vehicle lithium ion battery system using the air-cooled cooling-based sealed battery pack 1 of FIG. 10.

FIG. 15 is an exploded perspective view illustrating the entire structure of the airtight cooling-based hermetic battery pack 1 of FIG. 1.

Hereinafter, the detailed description of the preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

4 is a view showing a peltier (peltier) 50 used in the air-cooled cooling-based hermetic battery pack 1 of FIG.

FIG. 8 is a diagram illustrating the structure of the BMA 10 of FIG. 6.

FIG. 9 is a diagram illustrating a thermal flow state of the BMA 10 of FIG. 6.

3 to 9, the air-cooled cooling-based hermetic battery pack 1 may include a battery module assembly (BMA) 10 including a plurality of battery cells 11, a primary heat sink 20, and two. A primary cold sink 30, a primary sealed housing 20 a, a secondary sealed housing 30 a, a cold block 40, a peltier 50, and a first cooling fin 60. .

The BMA 10 including the plurality of battery cells 11 is formed in a shape supported by the primary heat sink 20 and the secondary cold sink 30 at the bottom thereof.

The primary heat sink 20 directly contacts the plurality of battery cells 11 in a structure supporting the lower surfaces of the plurality of battery cells 11, thereby providing an effect of lowering the temperatures of the plurality of battery cells 11 firstly. In order to form a plate.

The secondary cold sink 30 is formed in a hexahedral shape that supports the lower surface of the primary heat sink 20 and has an upper surface, a front surface, and a rear surface open, thereby heating the temperature of the plurality of battery cells 11. It acts as a second lowering.

Here, the primary hermetic housing 20a has a hexahedron shape having an open upper surface as an upper object and a lower object, such that a plurality of battery cells 11 are in contact with the primary heat sink 20 and the secondary cold sink 30. Is formed for primary sealing.

On the other hand, the secondary sealed housing (30a) is formed by the upper body and the lower object is formed in the upper body and the upper surface surrounding the outer circumferential surface of the primary closed housing (20a), the primary heat sink 20 and the secondary cold sink It is formed for secondary sealing of the plurality of battery cells 11 in contact with 30.

The cold concentrating cold block 40 is formed in a rectangular plate shape in contact with the secondary hermetic housing 30a, and has a structure in contact with the Peltier element 50 in the lower portion thereof.

The Peltier element 50 is inserted into the insertion groove 62 inside the cooling fin housing 61 in which the first cooling fin 60 is formed, and contacts the cold concentrating cold block 40 on the upper surface. To this end, the cooling fin housing 61 is formed of an upper object and a lower object, and each of the upper object and the lower object includes a first insertion end 61a for inserting the secondary sealed housing 30a up to a predetermined height therein. The second insertion end 61b for mounting the BMS 2, the BDU 3 and the power supply and the control plug 4 to be described later is formed, and the upper surface is formed in an open hexahedral shape. Here, the preset height is a Peltier element inserted into the insertion groove 62 of the first insertion end 61a when the first height is inserted into the first insertion end 61a on the cooling fin housing 61 of the secondary hermetic housing 30a. 50) and a position in contact with the upper surface of the laminated structure of the cold concentrating cold block 40 thereon.

In the air-cooled cooling-based hermetic battery pack 1 using the Peltier element 50, the battery cell 11 composed of a HEV vehicle lithium ion battery cell generates heat due to instantaneous use of high current, and the battery cell 11 Since the life of is most affected by heat, the heat dissipation structure prevents the inflow of high heat from the outside and contacts the secondary hermetic housing 30a to maintain the internal temperature cooled by the Peltier element 50. It provides a thermal insulation design by the housing 61 for cooling fins. As a result, the first cooling fins 60 and the second cooling fins corresponding to the heat sink and the position of the Peltier element 50 inside the sealed battery pack 1 of the air-cooled cooling-based sealed structure for satisfying the dust and water resistance grades. Provide an optimal shape structure for 11b.

In addition, as described above, in order to provide a new concept of air-cooled heat dissipation method using the Peltier element 50 to switch from the conventional water-cooled to air-cooled, and to radiate heat in a closed space, and at the same time in the winter using the Peltier element 50 Air-cooled cooling-based sealed battery pack (1) has the effect of utilizing the thermoelectric effect to increase the temperature inside.

Meanwhile, the Peltier element 50 of FIG. 4 will be described in more detail. The Peltier device 50 is one of the cooling devices, and varies in size from several cm to several tens of cm. The bottom and top of the Peltier element 50 used in the present invention has a ceramic layer as shown in Figure 4b, and serves to limit the flow of electricity while efficiently transferring heat. The conductor layer and the semiconductor layer sequentially formed in the ceramic layer correspond to the 'engine' for cooling and heating in the air-cooled cooling-based hermetic battery pack 1 using the Peltier element 50 according to the present invention.

In the case of the semiconductor layer, the entire P-type semiconductor and the N-type semiconductor are configured in series to draw the maximum cooling efficiency. In the present invention, in order to heat and cool using the Peltier element 50 having a structure in which P-type and N-type semiconductors are connected in series, a precondition that two different metals have two contacts is required. The Peltier element 50 has a simple structure, environmental friendliness, and high reliability (there is little chance of failure because it is composed only of an electric circuit having no physical operation structure at all) and is widely used in a local cooler and the like.

With reference to the internal structure of the Peltier element 50 of FIG. 4B and the principle of the Peltier element 50 of FIG. 4C, the peltier effect of the Peltier element 50 according to the present invention will be described.

The Peltier effect of the Peltier element 50 of the present invention is a phenomenon in which a closed circuit is formed between two points connecting a metal and a semiconductor constituting a conductor layer, and when current flows, one side generates heat and the other absorbs heat. Two ends of two different metal wires are connected to form a closed circuit, and if a temperature difference is given at both ends, a potential difference occurs between the two contacts. This is called thermoelectric phenomenon and the potential difference generated at this time is called thermoelectric power. These thermoelectric phenomena can be classified into the Seebeck effect of obtaining an electromotive force by using the temperature difference between the two ends, the Peltier effect of cooling and heating by the electromotive force, and the Thomson effect of generating an electromotive force by the temperature difference between the conductors.

In the present invention, when the Peltier element 50 is attached to two different metals with two contacts, when current flows through these two metals, heat is continuously absorbed and cooled on one side and continuously on the other side. Is released and becomes hot. At this time, if the current is flowed in the opposite direction of the + pole and the-pole, the side of dissipating / absorbing heat is also reversed so that the heated side is cooled and the cooled side is heated. Applying this principle, when heat energy is applied to the heat absorbing portion of the Peltier element 50 in the present invention, a temperature difference occurs on both surfaces, thereby generating a current. There is a constant temperature difference between cooling and heating of the Peltier element 50, cooling the heat on the hot side, and lowering the temperature, the temperature on the other side of the cold side is lowered.

In other words, the Peltier effect by the Peltier element 50 in the present invention means the release and absorption of heat generated when the current flows through the thin junction of two different materials, the heat is generated when the current flows in any one direction However, the Peltier effect is reversible because it absorbs heat when flowed in the opposite direction.

By using the characteristics of the Peltier device 50, the airtight cooling-based hermetic battery pack 1 may be cooled to manufacture a completely hermetic battery pack.

The first cooling fins 60 are formed on the lower surface of the housing 61 for cooling fins such that a plurality of plate-shaped heat dissipation fins face downward with uniform spacing. The first cooling fin 60 is in contact with the outside air during vehicle operation and is formed for heat exchange.

Each of the plurality of battery modules 11u constituting the BMA 10 forms second cooling fins 11b on both sides of the cell cartridge 11a that divides the plurality of battery cells 11. Here, the second cooling fin 11b is formed to face in a direction orthogonal to both sides of the battery module 11u at a position in direct contact with all of the plurality of battery cells 11 in one battery module 11u. A plurality of plate-shaped heat sink fins are formed at even intervals.

A plurality of battery modules (11u) is a lithium ion battery module to form a battery module assembly (BMA) (10) on the air-cooled cooling-based sealed battery pack 1 of six series connections as shown in FIG.

10 is a view showing the configuration of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based hermetic battery pack (1) according to the present invention. FIG. 11 is a view illustrating a thermal flow state of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based sealed battery pack 1 of FIG. 10. 12 and 13 are cross-sectional views of a lithium ion battery system for a commercial vehicle using the air-cooled cooling-based sealed battery pack 1 of FIG. 10. FIG. 14 is a view illustrating a sealed state of a commercial vehicle lithium ion battery system using the air-cooled cooling-based sealed battery pack 1 of FIG. 10.

10 to 14, a lithium ion battery system for a commercial vehicle using an air-cooled cooling-based hermetic battery pack 1 may include a BMS (battery) in addition to the air-cooled cooling-based hermetic battery pack 1 described above with reference to FIGS. 3 to 9. management system: 2), battery disconnect unit (BDU) 3, and power and control plug 4;

BMS (2) is connected to the air-cooled cooling-based sealed battery pack (1), the on-board for CAN (Controller Area Network) communication to enable communication with a microcontroller or device without a host computer in the vehicle ( On Board).

The BMS 2 is formed to monitor temperature of the battery cells 11 and the state of the battery cells 11 constituting the air-cooled cooling-based sealed battery pack 1. To this end, the BMS 2 not only checks real-time temperature information measured from a temperature sensor (not shown) attached to the cartridge of the battery cell 11, but also lithium ion for a commercial vehicle using an air-cooled cooling-based sealed battery pack 1. Monitor the voltage, current and temperature of the battery system.

In addition, the BMS 2 maintains a uniform voltage level between each battery cell 11, which is a lithium ion battery cell, and measures the temperature inside the sealed battery pack 1 based on an air-cooled cooling system. In addition to controlling the operation of the overcharge and over discharge protection, battery level measurement, current consumption measurement, and short protection function.

The BDU 3 is compactly designed to be mounted together with the above-described BMS 2 as the second insertion end 61 b of the housing 61 for cooling fins. That is, the front end of the BMS (2) formed in connection with the air-cooled cooling-based hermetic battery pack (1) formed at the first insertion end (61a) of the housing for cooling fins (61), and the rear end of the power supply and control plug (4) Is formed.

And, as shown in Figure 14, the air-cooled cooling-based sealed battery pack 1 is a first outer case 71 for covering the upper portion of the first insertion end 61a of the housing 61 for cooling fins, BMS (2), BDU (3) and a second outer case 72 for covering the upper part of the second insertion end 61b for mounting the power supply and control plug 4, which can be mounted on a vehicle and are completely protected from dust. And a completely watertight battery case for low pressure water sprayed from all directions.

And, Figure 15 is an exploded perspective view showing the overall structure of the air-cooled cooling-based hermetic battery pack 1 of FIG.

As described above, the present specification and drawings have been described with respect to preferred embodiments of the present invention, although specific terms are used, it is only used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention. It is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

Explanation of the sign

1: Hermetic battery pack based on air cooling

2: battery management system (BMS)

3: battery disconnect unit (BDU)

4: power and control plug

10: battery module assembly (BMA)

11: battery cell

11a: cell cartridge

11b: second cooling fin

20: primary heatsink

20a: Primary sealed housing

30: 2nd coldsink

30a: secondary sealed housing

40: cold block

50: peltier

60: first cooling fin

Claims

A battery module assembly (BMA) 10 including a plurality of battery cells 11;

A hexahedron shape with an open top surface is formed of an upper object and a lower object, and formed for primary sealing on a plurality of battery cells 11 in contact with the primary heat sink 20 and the secondary cold sink 30. Primary sealed housing 20a;

A plurality of battery cells contacted with the primary heat sink 20 and the secondary cold sink 30 by forming an hexahedral shape having an open upper surface surrounding the outer circumferential surface of the primary hermetic housing 20a as an upper object and a lower object ( A secondary hermetic housing 30a formed for secondary closure to 11);

The lower surface is inserted into the insertion groove 62 in the cooling fin housing 61 formed with the first cooling fin 60, the upper portion and the secondary cold sink 30 through the cold concentrating cold block 40 A Peltier element 50 which is abutted and formed in a sealed structure by the secondary hermetic housing 30a and the cooling fin housing 61; Air-cooled cooling-based sealed battery pack structure comprising a.
The method according to claim 1, wherein the primary heat sink 20,

It is formed in a plate shape to directly lower the temperature of the plurality of battery cells 11 in direct contact with the plurality of battery cells 11 in a structure supporting the lower surface of the plurality of battery cells 11,

Secondary cold sink 30,

Supporting the lower surface of the primary heat sink 20, the upper surface, the front and the rear is formed in a hexahedral shape is characterized in that serves to lower the temperature to the second through the heat generated for the plurality of battery cells (11) Air-cooled cooling based sealed battery pack structure.
The method according to claim 1, Cooling concentration cold block 40,

The airtight cooling-based hermetic battery pack structure, which is formed in a rectangular plate shape in contact with the secondary hermetic housing (30a), the lower portion has a structure in contact with the Peltier element (50).
The method of claim 1, wherein the housing 61 for cooling fins,

A first insertion end 61a for inserting the secondary hermetic housing 30a to a predetermined height therein, and a second insertion for mounting the BMS 2, the BDU 3, and the power and control plug 4; Air-cooled cooling-based hermetic battery pack structure, characterized in that divided into stages (61b), the upper surface is formed in an open hexahedral shape.
The method according to claim 4, wherein the preset height is,

When inserted into the first insertion end 61a on the cooling fin housing 61 of the secondary hermetic housing 30a, the Peltier element 50 inserted into the insertion groove 62 of the first insertion end 61a and its Air-cooled cooling-based closed battery pack structure, characterized in that the position in contact with the upper surface of the laminated structure of the cold concentrating cold block 40 of the upper.
The method according to claim 1,

The battery cell 11 is a HEV vehicle lithium ion battery cell,

An air-cooled cooling-based hermetic battery characterized by preventing the inflow of high heat from the outside by the hermetically sealed and insulated structure by the secondary hermetic housing 30a and maintaining the internal temperature cooled by the Peltier element 50. Pack structure.
The method of claim 1, wherein the first cooling fins 60,

On the lower surface of the cooling fin housing 61, a plurality of plate-shaped heat-dissipating fins are formed so as to face downwards with uniform spacing, respectively, the air-cooled cooling characterized in that the contact with the outside air when driving the vehicle is formed for heat exchange Based sealed battery pack structure.
The method according to claim 1,

Each of the plurality of serially connected battery modules 11u constituting a battery module assembly (BMA) 10,

Air-cooled cooling-based hermetic battery pack structure, characterized in that it comprises a second cooling fin (11b) on both sides of the cell cartridge (11a) for separating a plurality of battery cells (11u) in each battery module (11u).
The method of claim 8, wherein the second cooling fin (11b),

A plurality of plate-shaped heat dissipation fins formed to face in a direction orthogonal to both sides of the battery module 11u at a position in direct contact with all of the plurality of battery cells 11 in one battery module 11u are uniform. Air-cooled cooling-based hermetic battery pack structure, characterized in that formed at intervals apart.