KR101637763B1 - Solid-State battery pack assembly, coolant circulating system for vehicle having the same, and Method for manufactoring the same - Google Patents

Abstract

A full solid battery pack assembly according to an embodiment of the present invention includes: a front solid battery; A plurality of cooling fins disposed on a top surface of the pre-solid battery; And an inverter disposed on an upper surface of the plurality of cooling fins to transfer heat generated in the entire solid state battery.

Description

Technical Field [0001] The present invention relates to a solid-state battery pack assembly, a vehicle cooling water circulation system having the same, and a manufacturing method thereof.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle battery, and more particularly, to an all-solid battery pack assembly for maintaining an all-solid-state battery at a high temperature in an environmentally friendly vehicle to improve output performance and capacity, a vehicle coolant circulation system having the same, .

Eco-cars (hybrid, plug-in hybrid, electric car, fuel cell car, etc.) commonly include motors, chargers, inverters, power converters, and lithium-ion batteries. In the case of these components, cooling water is used to cool the heat generated as an exothermic component. In particular, a lithium ion battery may be ignited or exploded when an internal material is flammable, and abnormal conditions such as overcharge or penetration occur.

Therefore, although various methods have been proposed to improve the safety of the lithium ion battery, there is a problem in safety due to the use of the ignitable liquid electrolyte. Therefore, safety can be improved only by applying all solid batteries.

However, in the case of the electrolyte of the entire solid-state battery, the output performance is low at a low temperature because the ionic conductivity is low at a low temperature and the ionic conductivity is high at a high temperature. Therefore, in order to improve the output performance, it is necessary to maintain a high temperature with high ion conductivity.

Of course, a separate heating device is formed for this purpose, and a cooling fan for cooling the temperature is formed when the temperature rises.

However, such a separate heating apparatus is disadvantageous in that it is separated from all the solid-state batteries and has a low thermal efficiency. Further, when a problem occurs in the temperature raising device, there is a problem that the entire solid battery can not be raised to room temperature. Further, since the temperature raising device and / or the inverter are constituted, there is a problem that the volume and weight of the vehicle are increased.

In addition, a separate heating device and an inverter are constituted in addition to this, so that the increase of the battery capacity is also limited.

1. Korean Patent Publication No. 10-2009-0086462 2. Korean Patent Publication No. 10-2014-0088013

The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide an all-solid battery pack assembly for maintaining an all-solid battery at a high temperature in an environmentally friendly car to increase output performance and / or capacity, And a method for producing the same.

One aspect of the present invention provides a pre-solid battery pack assembly that maintains the pre-solid battery at a high temperature to increase output performance and / or capacity to achieve the above-described object.

The entire solid battery pack assembly includes:

All solid state batteries;

A plurality of cooling fins disposed on a top surface of the pre-solid battery; And

And an inverter disposed on an upper surface of the plurality of cooling fins to transfer heat generated in the entire solid state battery.

The entire solid-state battery pack assembly may further include a cooling fan installed on one side of the inverter and operated to cool the battery when the temperature of the inverter exceeds a critical point.

Further, the pre-solid battery pack assembly may further include a cooling passage installed on the other side of the inverter to cool the inverter.

The pre-solid battery pack assembly may further include a pre-solid battery pack case disposed between the pre-solid battery and the plurality of cooling fins.

In addition, the pre-solid battery pack case may be made of aluminum.

In addition, the pre-solid state battery may have a bipolar structure.

Also, the inverter may be characterized in that the capacitor, the power semiconductor, and the control board are formed in a thin film type.

On the other hand, another aspect of the present invention provides a vehicle cooling water circulation system for an environmental vehicle, comprising: a cooling water circulating flow path for circulating cooling water by a water pump that pumps the cooling water cooled by the radiator and the radiator; And a front solid battery pack assembly that performs self-cooling or temperature raising away from the cooling water circulation flow path.

On the other hand, another aspect of the present invention is a method of manufacturing a solid state battery, Arranging a battery pack case on a surface of the pre-solid battery; Arranging cooling fins on a surface of the battery pack case; And arranging the inverter on the surface of the cooling fin. The present invention also provides a method of manufacturing an all-solid-state battery pack assembly.

Also, the inverter may be characterized in that the capacitor, the power semiconductor, and the control board are formed in a thin film structure.

The method may further include installing a cooling channel for cooling the inverter on the other side of the inverter.

The method may further include installing a cooling fan for cooling the inverter on one side of the inverter.

According to the present invention, since the entire solid-state battery and the inverter are integrated, the high temperature can be maintained, and the output performance and / or capacity of the entire solid-state battery can be improved.

Further, another effect of the present invention is that a PTC (Positive Temperature Coefficient) heater or an additional device is not mounted, so that it can be used without energy density or electrical loss.

Another effect of the present invention is that the parts of the inverter are mounted on the surface of the entire solid-state battery, thereby increasing the space utilization of the vehicle structure.

FIG. 1 is a perspective view showing the concept of a pre-solid battery pack assembly 100 according to an embodiment of the present invention.
2 is a conceptual diagram of a vehicle cooling water circulation system 200 to which the entire solid battery pack assembly 100 shown in FIG. 1 is applied.
FIG. 3A is a conceptual diagram illustrating the concept of temperature rise of a conventional solid battery pack assembly 100 according to FIG.
FIG. 3B is a conceptual diagram illustrating the concept of cooling when the inverter temperature of the conductive battery pack assembly 100 exceeds the critical point according to FIG.
FIG. 4 is a cross-sectional view of the conductive battery pack assembly 100 taken along the line A-A 'in FIG.
5 is a flowchart showing a manufacturing process of a pre-solid battery pack assembly 100 according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

In the drawings, the thickness is enlarged to clearly represent the layers and regions. Like parts are designated with like reference numerals throughout the specification. When a layer, film, region, plate, or the like is referred to as being "on" another portion, it includes not only the case directly above another portion but also the case where there is another portion in between.

Conversely, when a part is "directly over" another part, it means that there is no other part in the middle. In addition, when a certain portion is formed as "whole" on another portion, it means that it is formed not only on the entire surface (or the front surface) of the other portion but also on the edge portion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an entire solid battery pack assembly, a vehicle cooling water circulation system, and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the concept of a pre-solid battery pack assembly 100 according to an embodiment of the present invention. 1, the pre-solid battery pack assembly 100 includes a pre-solid-state battery 130, an inverter 110 disposed on the upper surface of the pre-solid-state battery 130, A cooling fan 120, a cooling channel 140, and the like.

The pre-solid state battery 130 refers to a battery in which the electrolyte through which lithium ions migrate is made into a solid. Since there is no liquid in the electrolyte, an ultra thin film can be formed. In addition, it is possible to realize a high voltage / high density battery by stacking multiple layers of positive and negative electrodes. In particular, the entire solid state battery 130 can be fabricated with a bipolar structure. The bipolar structure has a structure in which electrodes and electrodes are bonded to each other, and the negative electrode and the positive electrode may be bonded to each other, or the same negative electrode or positive electrode may be bonded to each other. Therefore, it is possible to manufacture a large and thin rectangular and rectangular battery.

The inverter 110 includes a power semiconductor 311, a capacitor 112, a control board 113, and the like. The power semiconductor 311, the capacitor 112, and the control board 113 are formed in a thin film type.

The power semiconductor 311 may be an insulated gate bipolar transistor (IGBT), but is not limited thereto. The power semiconductor 311 may be a semiconductor switching element such as a field effect transistor (FET), a metal oxide semiconductor FET (MOSFET), a power rectifier diode, , A gate turn-off (GTO) thyristor, a TRIAC, a silicon controlled rectifier (SCR), and an integrated circuit (IC) circuit. In particular, in the case of a semiconductor device, a bipolar or power MOSFET (Metal Oxide Silicon Field Effect Transistor) device can be used. Power MOSFET devices have a double-diffused metal oxide semiconductor (DMOS) structure, unlike conventional MOSFETs, with high-voltage, high-current operation.

The capacitor 112 is fabricated using a MEMS (Micro Electro Mechanical System) technology, and particularly a BST (Barium Strontium Titanate) thin film.

The cooling fan 120 functions to cool the heat generated by the inverter 110. In other words, when the temperature of the inverter 110 exceeds a critical point, it operates for cooling. Therefore, air or cooled air is blown into the inverter 110 side. A cooling passage 140 for circulating the air introduced from the cooling fan 120 is provided on the opposite side of the cooling fan 120.

Since the inverter 110 is placed between the cooling fan 120 and the cooling passage 140, it is possible to effectively cool the inverter 110.

Further, the cooling passage 140 is constituted by a duct, and can communicate with other ducts in the vehicle.

2 is a conceptual diagram of a vehicle cooling water circulation system 200 to which the entire solid battery pack assembly 100 shown in FIG. 1 is applied. Referring to FIG. 2, a cooling water circulation channel 201 including a motor 210, a radiator 220, a water pump 230, a power converter 240, a charger 250, and the like is formed. That is, the cooling water is cooled by the radiator 220, and the pump 230 pumps and circulates the cooled cooling water.

Of course, in the embodiment of the present invention, the entire solid-state battery pack assembly 100 performs its own cooling or temperature raising out of the range of the cooling water circulating flow path 201.

Here, the power converter 240 may be a DC (Direct Current) -DC converter.

FIG. 3A is a conceptual diagram illustrating the concept of temperature rise of a conventional solid battery pack assembly 100 according to FIG. Referring to FIG. 3A, the heat of the inverter 110 is normally transferred to the pre-solid battery 130 along the cooling fin. That is, since the inverter 110 is connected to the all-solid-state battery 130 via the cooling pin, the heat is transferred directly along the cooling pin. Thus, the entire solid-state battery 130 is heated.

FIG. 3B is a conceptual diagram illustrating the concept of cooling when the inverter temperature of the conductive battery pack assembly 100 exceeds the critical point according to FIG. Referring to FIG. 3B, when the inverter 110 exceeds a normal temperature (that is, a predetermined critical point) due to continuous heat generation, the cooling fan 120 is operated to blow air toward the cooling pin. Of course, it is also possible to supply air to be cooled by the radiator (230 in Fig. 2) or to supply outside air.

This air supply causes the inverter 110 to cool. The entire solid state battery 130 is maintained at a sufficiently high temperature by the inverter 110, so that it is not affected by the capacity and / or the output power reduction due to cooling.

A temperature sensor (not shown) is used for calculating this temperature.

FIG. 4 is a cross-sectional view of the conductive battery pack assembly 100 taken along the line A-A 'in FIG. 4, a front solid battery pack case 410 placed on the upper surface of the front solid battery case 130, a front solid battery case case 410 placed on the upper surface of the front solid battery case case 410, A cooling fin 420 and an inverter 110 disposed on the upper surface of the plurality of cooling fins 420 to transfer heat generated in the entire solid state battery.

Aluminum alloy, copper, brass, or the like may be used as the material of the pre-solid-state battery pack case 410 and the cooling fin 420, though aluminum is excellent in thermal conductivity.

5 is a flowchart showing a manufacturing process of a pre-solid battery pack assembly 100 according to another embodiment of the present invention. Referring to FIG. 5, the entire solid state battery 130 is arranged (step S510).

Then, the battery pack case 410 is arranged on the surface of the pre-solid battery 130 (step S520).

Then, a plurality of cooling fins 420 are arranged on the surface of the battery pack case 410 (step S530).

Finally, the inverter 110 is arranged on the surface of the plurality of cooling fins 420 (step S110).

In addition, a cooling flow path (140 in FIG. 1) and / or a cooling fan 120 for cooling the inverter is installed on the other side of the inverter 110.

100: All solid state battery pack assembly
110: inverter 111: power semiconductor
112: capacitor 113: control board
120: Cooling fan 130: All solid state batteries
140: cooling channel 210: motor
220: Radiator 230: Water pump
240: power converter 250: charger
410: Battery pack case
420: cooling pin

Claims (12)

All solid state batteries;
A plurality of cooling fins disposed on a top surface of the pre-solid battery; And
And an inverter disposed on an upper surface of the plurality of cooling fins to transfer heat generated in the entire solid state battery,
And a cooling fan installed at one side of the inverter and operated for cooling when the temperature of the inverter exceeds a critical point,
The inverter includes a capacitor, a power semiconductor, and a control board formed in a thin film Wherein the battery pack assembly comprises:
delete The method according to claim 1,
Further comprising: a cooling passage installed on the other side of the inverter to cool the inverter.
The method according to claim 1,
Further comprising: a pre-solid battery pack case positioned between the pre-solid battery and the plurality of cooling fins.
5. The method of claim 4,
Wherein the pre-solid battery pack case is made of aluminum.
The method according to claim 1,
Wherein the pre-solid battery is a bipolar structure.
delete In a vehicle cooling water circulation system of an environmental vehicle,
A cooling water circulating flow path for circulating cooling water by a radiator and a water pump for pumping cooling water cooled by the radiator; And
The entire solid-state battery pack assembly according to any one of claims 1 to 6, which performs self-cooling or heating at a temperature apart from the cooling water circulating flow path;
The cooling water circulation system comprising:
Arranging a pre-solid battery;
Arranging a battery pack case on a surface of the pre-solid battery;
Arranging a plurality of cooling fins on a surface of the battery pack case; And
And arranging the inverter on the surface of the plurality of cooling fins,
The inverter is completed by forming a capacitor, a power semiconductor, and a control board in a thin film type,
And installing a cooling fan for cooling the inverter on one side of the inverter. ≪ RTI ID = 0.0 > 11. < / RTI >
delete 10. The method of claim 9,
And installing a cooling passage for cooling the inverter on the other side of the inverter.
delete

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