KR101769109B1 - Battery pack including cartridge for secondary battery - Google Patents

Abstract

The present invention discloses a battery pack including a cartridge capable of securing an ambient temperature condition of a secondary battery to a predetermined level or higher. A battery pack according to the present invention includes at least one secondary battery; And a heating member configured to receive at least a part of the secondary battery and to be laminated in at least one direction, the heat insulating member for blocking the secondary battery side heat from flowing out to the outside and the heating member for supplying heat to the secondary battery side Cartridge.

Description

[0001] The present invention relates to a battery pack including a cartridge for a secondary battery,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery, and more particularly, to a battery pack including a cartridge capable of securing an ambient temperature condition of a secondary battery to a predetermined level or higher.

2. Description of the Related Art Generally, a secondary battery is a battery that can be charged and discharged unlike a primary battery which can not be charged, and is widely used in various fields and devices such as a mobile phone, a notebook computer, a camcorder, Currently commercialized secondary batteries include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries, and metal air batteries, all solid batteries, sodium-based batteries, magnesium batteries, have.

Among these various secondary batteries, the lithium secondary battery has a remarkable advantage in that it has almost no memory effect compared with the nickel-based secondary battery, has a high charge density, low self-discharge rate and high energy density

These lithium secondary batteries mainly use a lithium-based oxide and a carbonaceous material as a cathode active material and an anode active material, respectively. The lithium secondary battery includes a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material, respectively, and the electrolyte is housed in the case. The electrolyte is typically an electrolyte in a liquid state and is also referred to as an electrolyte .

In the case of a secondary battery made of a liquid electrolyte, it is widely used due to various advantages such as easy handling and manufacturing, good electric conductivity at room temperature, and stable performance even at room temperature. However, in the case of such a liquid electrolyte cell, problems such as leakage of electrolyte or generation of gas may occur, and the safety of the secondary battery such as explosion, ignition, and discharge of harmful gas may be significantly deteriorated.

In such a situation, the use of a solid electrolyte makes it possible to prevent problems such as electrolyte leakage and gas generation, and to increase the interest and development of all solid-state batteries that can secure safety. Particularly, in the case of an electric vehicle or a power storage device, such as an electric charging station of an electric vehicle or a power storage device used for a smart grid, a large amount of secondary battery can be used, so that the expectation for a stable all- . However, in the case of such a pre-solid battery, since the ionic conductivity is low at room temperature, the operating temperature is relatively higher than that of the liquid electrolyte battery. Therefore, when a battery pack is constructed using all solid-state batteries, it is necessary to increase the temperature condition as compared with the liquid electrolyte battery.

However, in the case of the conventional battery pack, since the liquid electrolyte cell is generally targeted, it has a structure which is not suitable when the solid electrolyte cell is used.

Particularly, in the case of a battery pack, a cartridge is often used as a structure for easily stacking and storing a plurality of pouch-type secondary batteries, protecting the secondary battery from external impacts and preventing flow. These cartridges can be expressed in various other terms such as a frame for lamination, and they can be configured to be stacked in a substantially unidirectional direction, for example, in a vertical direction, and can be configured to accommodate the secondary battery in an internal space formed at the time of lamination. Incidentally, such a cartridge often has various configurations for lowering the temperature of a stored secondary battery. For example, the cartridge may have cooling fins formed in a plate shape, or an opening may be formed such that external air can be introduced into the cartridge when stacked. The reason why the cartridge includes the configuration for cooling the secondary battery is as follows. In the case of the liquid electrolyte secondary battery included in the battery pack, if the temperature is higher than the normal temperature, not only the performance is lowered but also the safety is low, This is because problems can arise.

However, in the case of a secondary battery such as a solid-state battery, the performance of the battery is not properly exhibited at room temperature, and the performance of the battery can be improved at a temperature higher than room temperature. Therefore, it is not suitable to use the configuration of a conventional battery pack, such as a conventional cartridge, as it is while using such a pre-solid battery.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a secondary battery which can operate at a higher temperature or improve its performance compared to a liquid electrolyte secondary battery such as a non-aqueous electrolyte lithium battery, An object of the present invention is to provide a battery pack, an automobile or the like including a cartridge having a novel structure.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a battery pack comprising: at least one secondary battery; And a heating member configured to receive at least a part of the secondary battery and to be laminated in at least one direction, the heat insulating member for blocking the secondary battery side heat from flowing out to the outside and the heating member for supplying heat to the secondary battery side Cartridge.

Preferably, the secondary battery is a pre-solid battery.

Preferably, the cartridge further includes a seating portion on which at least a part of the lower portion of the secondary battery is seated, and a side portion covering the side surface of the secondary battery, the seating portion being configured to stand upright in the seating portion.

Preferably, the heat insulating member is provided on the side surface portion.

Also preferably, the heat insulating member is provided on the inner surface or inside of the heat insulating member.

Preferably, the side portion is composed of only the heat insulating member.

Preferably, the heating member is provided in the seat portion.

Also preferably, the heating member is provided on the upper surface of the seat portion.

Also preferably, the seat portion is composed of only the heating member.

Also preferably, the heating member is exposed to the outside of the cartridge at least a portion of the lower portion.

Preferably, the heat insulating member is detachable from at least a part of the cartridge.

Preferably, the cartridge further includes a lower cover portion configured to at least partially surround a side surface of the secondary battery accommodated in the inner space of the cartridge stacked at the lower portion thereof when stacked.

Preferably, the cartridge further includes a plurality of secondary batteries arranged in the horizontal direction, and further includes a partition wall portion formed in a vertical direction between the plurality of secondary cells arranged in the horizontal direction.

Also preferably, the partition wall portion has at least one of the heat insulating member and the heating member.

Also preferably, the heat insulating member comprises at least one material selected from the group consisting of glass wool, EPS, XPS, polyurethane foam, water soft foam, urea foam, vacuum insulation panel, PVC and heat reflecting insulation.

Also preferably, the apparatus further comprises a lower cover, at least a part of which is made of an insulating material, and which is coupled to the lower portion of the cartridge stacked at the bottom.

Also preferably, the apparatus further comprises an upper cover, at least a part of which is made of an insulating material, and which is joined to the upper portion of the cartridge stacked on the uppermost portion to close the upper open space.

Further preferably, the apparatus further includes a temperature measurement unit for measuring the ambient temperature and a control unit for controlling the operation of the heating member according to the temperature measured by the temperature measurement unit.

Further, preferably, the heating member is supplied with power from at least a part of the secondary battery stored in the cartridge.

Also preferably, the secondary battery includes two or more types of secondary batteries having different ion conductivities at room temperature.

According to another aspect of the present invention, there is provided a vehicle including the battery pack according to the present invention.

According to another aspect of the present invention, there is provided a power storage device including the battery pack according to the present invention.

According to an aspect of the present invention, a battery pack utilizing a secondary battery having stable operating performance at a higher temperature than a conventional non-aqueous electrolyte lithium battery can be provided.

In particular, according to an embodiment of the present invention, when the battery pack is constructed using the all solid battery using the solid electrolyte, the ambient temperature of the all solid battery can be increased to improve the operation performance of the all solid battery.

In addition, since the electrolyte leakage and gas generation are less likely to occur in such a full solid battery, problems such as ignition, explosion and generation of harmful gas may not occur when the battery pack is constructed using the same, .

Particularly, in the case of the present invention, by including the heating member together with the heat insulating member in the cartridge, the performance of the secondary battery at the time of initial driving can be improved. For example, in the case of a pre-solid secondary battery, the temperature inside the cartridge may not be raised to an optimum temperature at the beginning of operation. In this case, heat is supplied to the entire solid secondary battery through the heating member, It is possible to ensure that the operating performance of the battery is higher than a certain level even in the early stage of the battery. Therefore, it is possible to shorten the standby time for achieving a stable performance with respect to all solid secondary batteries and the like.

According to an aspect of the present invention, since the heat insulating member and the heating member are provided in the cartridge itself, when the cartridge is stacked and the secondary battery is received in the inner space, the heat insulating member and the heating member are naturally positioned And it is not necessary to additionally provide or provide a separate structure for heat insulation or heating of the secondary battery. Accordingly, not only the processability in manufacturing the battery pack can be improved, but also the increase in the space and the increase in the load due to the separate heat insulating and heating components can be prevented.

More specifically, according to one aspect of the present invention, the heat generated in the secondary battery does not escape to the outside of the cartridge, and the cartridge can exist almost in the internal space in which the cartridge is stacked. Therefore, the temperature around the secondary battery can be stably maintained at a relatively high level relative to the outside, and the operating performance of the secondary battery such as the all-solid battery can be stably secured. Furthermore, in the present invention, since the heat generated by the secondary battery is utilized not only by the heat supplied by the heating member but also by the heat generated by the secondary battery, there is no need to continuously supply heat or supply a large amount of heat.

In addition, the battery pack according to the present invention may employ a variety of secondary batteries other than the all-solid lithium secondary battery in which the electrolyte is in a solid state, and that operate at a temperature higher than room temperature or have improved performance.

In addition, according to one aspect of the present invention, the driving temperature can be controlled according to the material of the heat insulating material, so that the secondary battery can provide an optimal temperature condition and exhibit stable performance.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further augment the technical spirit of the invention. And should not be construed as limiting.
1 is a perspective view schematically showing a configuration of a battery pack according to an embodiment of the present invention.
Fig. 2 is a view schematically showing one cartridge configuration in the battery pack shown in Fig. 1. Fig.
3 is a cross-sectional view taken along the line A-A 'in Fig.
4 is a cross-sectional view schematically showing a configuration in which the cartridges shown in Fig. 3 are stacked in two vertical directions and a secondary battery is housed in the inner space.
5 is a cross-sectional view schematically showing the configuration of a cartridge according to another embodiment of the present invention.
6 is a cross-sectional view schematically showing a configuration of a secondary battery cartridge according to another embodiment of the present invention.
7 is a cross-sectional view schematically showing the configuration of a secondary battery cartridge according to another embodiment of the present invention.
8 is a cross-sectional view schematically showing a configuration of a cartridge according to another embodiment of the present invention.
9 is a perspective view schematically showing a configuration of a cartridge according to another embodiment of the present invention.
10 is a cross-sectional view schematically showing a configuration of a secondary battery cartridge according to another embodiment of the present invention.
11 is a cross-sectional view schematically showing a configuration in which the cartridges of Fig. 10 are stacked in a vertical direction.
12 is a cross-sectional view schematically showing a configuration of a secondary battery cartridge according to another embodiment of the present invention.
13 is a cross-sectional view schematically showing a configuration of a secondary battery cartridge according to another embodiment of the present invention.
14 is a cross-sectional view schematically showing a configuration of a battery pack according to an embodiment of the present invention.
15 is a cross-sectional view schematically showing the configuration of a secondary battery cartridge in another embodiment of the present invention.
FIG. 16 is a diagram schematically illustrating a mode in which heat is transferred in a battery pack in which a plurality of cartridges of FIG. 15 are stacked.
17 is a cross-sectional view schematically showing a configuration of a battery pack according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a perspective view schematically showing a configuration of a battery pack according to an embodiment of the present invention.

Referring to FIG. 1, a battery pack according to the present invention includes a secondary battery 200 and a cartridge 100.

One or more secondary batteries 200 are included in the battery pack. Particularly, the secondary battery 200 may be included in a battery pack. In this case, the plurality of secondary batteries 200 may be stacked in one direction, for example, as shown in the figure.

The secondary battery 200 may be configured in various forms. For example, as shown in the figure, the secondary battery 200 may have a rectangular shape viewed from the top to the bottom. At this time, the case of the secondary battery 200 may be configured in the form of a pouch in which a metal layer is sandwiched between the polymer layers, and the electrode assembly and the electrolyte may be housed in a central portion thereof, . Alternatively, the case of the secondary battery 200 may be formed in the form of a metal can, and the cap assembly may be sealed when the electrode assembly and the electrolyte are accommodated in the inner space of the can.

In particular, in the present invention, the secondary battery 200 may operate at a temperature higher than room temperature or may be optimized in performance.

Preferably, the secondary battery 200 is a pre-solid battery. Here, the whole solid battery is a concept in which the electrolyte is a solid-state battery, as compared with a secondary battery composed of a typical liquid-state electrolyte. For example, the secondary battery 200 may be a lithium ion battery. In this case, the lithium ions can move between the positive electrode and the negative electrode through the solid electrolyte. Such a pre-solid battery is superior in safety to a liquid electrolyte secondary battery because there is no leakage problem, and can be easily realized in a flexible shape. Further, the entire solid-state battery can minimize the thickness of the secondary battery and can be easily realized in high-voltage and high-density batteries.

Such a pre-solid battery may not operate properly or exhibit its performance because its ionic conductivity is not high at room temperature due to the characteristics of a solid electrolyte. Therefore, in order for the entire solid-state battery to exhibit its performance, it is preferable to be driven in a high temperature environment higher than normal temperature. For example, a pre-solid battery may be capable of operating in a temperature environment of 50 ° C to 200 ° C or may exhibit optimal performance. Due to such characteristics, the entire solid battery can not easily be used in a battery pack in a normal state, but it can be used in a battery pack according to the present invention. In particular, the battery pack according to the present invention includes the cartridge 100 in a form in which such a pre-solid battery can be used.

FIG. 2 is a view schematically showing the configuration of one cartridge 100 in the battery pack shown in FIG. 1, and FIG. 3 is a sectional view taken along the line A-A 'in FIG.

Referring to FIGS. 1 to 3, the cartridge 100 can receive and hold the secondary battery 200 to prevent the secondary battery 200 from flowing and guide the assembly of the secondary battery 200. In particular, the cartridge 100 may have an internal space, and the secondary battery 200 may be housed in the internal space. For example, as indicated by I in Fig. 3, the cartridge 100 may be formed with an internal space in the form of an open top and a limited bottom and side. The secondary battery 200 can be inserted and accommodated in the inner space through the upper opening portion.

In addition, the cartridge 100 may be configured such that at least a portion of the accommodated secondary battery 200 is seated. For example, in the case of a pouch type secondary battery having a sealing portion, a sealing portion, that is, a rim portion of the secondary battery is seated on the cartridge 100, or a flat portion located at a lower portion of the secondary battery 200 is entirely As shown in Fig.

The cartridge 100 may be configured to be stackable in at least one direction as a component used for stacking one or more secondary batteries 200. [ For example, as shown in FIG. 1, the cartridge 100 may be configured to be stacked in a vertical direction. In this case, the portion of the cartridge 100 that is in contact with the adjacent cartridge 100 in stacking may be formed substantially flat. Then, the flat portions are brought into mutual contact with each other, so that the cartridge 100 can be easily stacked in the direction perpendicular to the paper surface.

Particularly, the cartridge 100 according to the present invention has the heat insulating member 130 and the heating member 140.

The heat insulating member 130 may be made of a material or structure that blocks or reduces the movement of heat. Particularly, the heat insulating member 130 may be configured to prevent the heat inside the cartridge 100, in which the secondary battery 200 is located, from flowing out to the outside of the cartridge 100. Therefore, the cartridge 100 can be configured to keep the temperature of the internal space within a certain range, especially within a temperature range higher than normal temperature, by the heat insulating member 130. For example, in the battery pack according to the present invention, the cartridge 100 may be configured such that the temperature of the internal space is maintained at 50 ° C to 200 ° C.

According to the cartridge 100 of the present invention, the battery pack according to the present invention can employ a secondary battery that operates at a temperature higher than room temperature or has improved performance. In particular, as described above, the secondary battery 200 according to the present invention may be a pre-solid battery. Such a pre-solid battery is difficult to be used in a conventional battery pack because its electric conductivity at room temperature is low and it is difficult to achieve its performance. However, the battery pack according to the present invention includes the cartridge 100 having the heat insulating member 130 as described above. By storing the entire solid secondary battery in the internal space of the cartridge 100, The temperature around the secondary battery can be kept relatively higher than that of the battery pack.

Particularly, the secondary battery can generate heat during operation, and the heat does not escape to the outer space of the cartridge 100 by the heat insulating member 130, but is discharged to the inner space of the cartridge 100 in which the secondary battery 200 is located Can be retained. Therefore, the temperature of the internal space of the cartridge 100 can be maintained at a certain level or higher. Therefore, the battery pack according to the present invention can be easily applied to a secondary battery, such as an all solid battery, whose performance is improved at a higher temperature than that of a conventional secondary battery.

Here, it is preferable that the heat insulating member 130 has a thermal conductivity of 0.1 W / mk or less at room temperature. Particularly, the heat insulating member 130 may have a thermal conductivity of 0.05 W / mk or less.

For example, the heat insulating member 130 may be formed of glass wool, expanded polystyrene (EPS), extruded polystyrene sheet (XPS), polyurethane foam, water soft foam, urea foam, A vacuum insulation panel, a PVC, and a thermal reflective material. In particular, in the case of these heat insulating members 130, it is easier to insulate the entire solid-state battery in the temperature range for optimum operation.

The temperature of the internal space of the cartridge 100 according to the present invention can be controlled by adjusting the type, arrangement, and thickness of the heat insulating member 130.

The heating member 140 may be configured to supply heat to the secondary battery 200 accommodated in the internal space of the cartridge 100. According to this configuration of the present invention, when the temperature around the secondary battery 200 is maintained at a predetermined level or higher, heat generated from the secondary battery 200 can be used as well as heat generated from the heating member 140 can be utilized .

According to this aspect of the present invention, the temperature of the internal space of the cartridge 100, that is, the temperature around the secondary battery 200, can be raised to a higher temperature more quickly. In addition, since the secondary cell 200 does not have or does not generate much heat before the secondary cell 200 is driven or at the initial stage when the secondary cell 200 starts to be driven, heat generated from the secondary cell 200 There is a limit to increase the temperature of the internal space of the cartridge 100 to a certain level or more. However, according to the above-described configuration of the present invention, heat generated through the heating member 140 can be used even when there is little heat generated from the secondary battery 200. Therefore, during the initial operation of the secondary battery 200, The performance of the stable secondary battery 200 can be ensured.

In particular, the heating member 140 may be implemented in a form of generating heat by receiving power. Therefore, the heating member 140 may include a power terminal for receiving power. The power supplied to the heating member 140 may be supplied from the secondary battery 200 stored in the internal space of the cartridge 100 or may be supplied from a separate battery outside the cartridge 100. The configuration in which the heating member 140 generates heat using power may be implemented in various ways. For example, the heating member 140 may be implemented to generate heat in the form of resistance heating using a jelly generated through current, or infrared heating through thermal infrared radiation.

Preferably, the interior space of the cartridge 100 can be defined by stacking. In this limited internal space, the secondary battery 200 can be housed. This will be described in more detail with reference to FIG.

4 is a cross-sectional view schematically showing a configuration in which the cartridge 100 shown in Fig. 3 is stacked in two vertical directions, and the secondary battery 200 is housed in the internal space.

Referring to FIG. 4, the inner space of the cartridge 100 stacked on the lower side may be clogged with the upper opening by stacking the other cartridges 100 on the upper portion, Not only the lower and side portions 120 but also the upper portion may be defined. 3, the inner space I of the cartridge 100 is formed in an open top. As shown in FIG. 4, another cartridge 100 in the upper direction is stacked, The open portion of the interior space of such a cartridge 100 can be covered. As the secondary battery 200 is accommodated in the limited space, the up-and-down, right-left and forward-backward directions of the secondary battery 200 are entirely covered and heat transfer from the inner space to the outer space of the cartridge 100 can be reduced .

Preferably, the cartridge 100 may include a seating portion 110 and a side portion 120, as shown in the figure.

The seat portion 110 is a component in which at least a part of the secondary battery 200 is seated in the cartridge 100. Particularly, at least a part of the lower part of the secondary battery 200 may be seated in the seating part 110, and the upper surface of the seating part 110 may correspond to the lower part of the secondary battery 200. For example, when the lower portion of the secondary battery 200 is formed in a flat shape, the upper surface of the seating portion 110 may also be formed in a flat shape. As another example, when the lower part of the secondary battery is formed in a curved shape such as a cylindrical secondary battery, the seating part 110 may be formed in a shape in which a semicircular groove is concave so that the cylindrical secondary battery can be seated.

The side part 120 may be formed in a shape erected on the rim of the seating part 110, that is, in the vertical direction on the outer peripheral part. For example, referring to FIGS. 1 and 2, when the cartridge 100 is formed in a substantially rectangular shape as viewed from the upper side to the lower side, the side part 120 has a rectangular shape, As shown in FIG. When the secondary battery 200 is housed in the internal space of the cartridge 100, the side portion 120 may be located on the side surface of the secondary battery 200 to cover the side surface of the secondary battery 200.

Here, at the upper and lower ends of the side part 120, a coupling part, particularly a concave / convex part, may be formed in a mutually engageable manner. For example, as indicated by P in FIG. 3, a convex protrusion may be formed on the upper portion of the side portion 120. 3, grooves may be formed at the lower end of the side portion 120 of the cartridge 100 in a position and shape corresponding to the protrusion at the upper end. 4, the protrusions of the side portions 120 stacked on the lower side can be inserted into the grooves of the side portions 120 stacked on the upper portion. According to this embodiment of the present invention, the protrusions and the grooves guide the stacking of the cartridges 100 in the vertical direction so that the stacking position between the cartridges 100 can be easily recognized, and the horizontal movement of the stacked cartridges 100 can be prevented .

The heat insulating member 130 and the heating member 140 may be provided on at least one of the seating portion 110 and the side surface portion 120.

Preferably, the heat insulating member 130 may be provided on the side portion 120 of the cartridge 100, as shown in FIGS. Even if the plurality of cartridges 100 are stacked in the vertical direction, no other cartridge 100 is located outside the side portion 120, and the outer space of the side portion 120 may be the external space of the battery pack. Therefore, heat transfer from the inside to the outside of the cartridge 100 through the side surface portion 120 may cause heat loss immediately. Therefore, when the side surface portion 120 is provided with the heat insulating member 130, Loss can be prevented.

The heat insulating member 130 may be provided only on the side surface portion 120 of the cartridge 100 and may not be provided on the mounting portion 110 of the cartridge 100. [ When the plurality of cartridges 100 are stacked in the vertical direction, the inner space of the cartridge 100 may be located outside the seating portion 110 of the cartridge 100. Therefore, even if the heat of the internal space of the cartridge 100 is discharged through the seating part 110 to the external space of the cartridge 100 because the heat insulating member 130 is not provided in the seating part 110, The heat can be introduced into another cartridge 100 stacked on the lower portion thereof. Therefore, from the viewpoint of the entirety of the battery pack, it is only heat transfer inside, so it can be said that there is no heat loss.

According to this embodiment of the present invention, the space for forming the heat insulating member 130 can be reduced to simplify the structure, increase the convenience of the process, and reduce the cost.

In addition, since the heat exchange between the cartridges 100 stacked in the vertical direction is possible, according to the embodiment as described above, the number of the cartridges 100, The ambient temperature imbalance can be solved. That is, when the ambient temperature of a plurality of secondary batteries included in the battery pack is relatively low, the heat exchange between the upper and lower parts through the mounting part 110 becomes possible, When the ambient temperature of the battery is low, heat may be transferred from the secondary batteries located in the various cartridges 100 of other layers, and the ambient temperature of the secondary battery may rise.

Particularly, in the case of a battery pack for an electric power storage device or a battery pack for an automobile, it is often placed outdoors. In a case where the ambient temperature is much lower, such as in winter, the temperature of the cartridge 100, . Therefore, in the case where the heat exchange between the stacked cartridges 100 is easily performed as in the above embodiment, the performance of the secondary battery having a low ambient temperature can be prevented from being significantly lowered.

More preferably, the heat insulating member 130 may be provided on the inner surface of the cartridge 100, particularly the inner surface of the side surface 120, as shown in FIGS. Here, the inner surface means the side surface on the side surface 120 where the secondary battery 200 is located, and may be the surface forming the inner space. According to this embodiment of the present invention, the process of providing the heat insulating member 130 in the cartridge 100 can be easily performed. For example, the heat insulating member 130 may be provided in such a manner that it is attached to the inner surface of the side portion 120 of the cartridge 100 through a fastening member such as an adhesive or bolt. Further, according to this embodiment of the present invention, since the heat is prevented from being transmitted through the side portion 120, the ability to retain heat in the internal space can be improved. In particular, the heat insulating member 130 may be entirely attached to the inner surface of the side portion 120 of the cartridge 100.

5 is a cross-sectional view schematically showing the configuration of the cartridge 100 according to another embodiment of the present invention.

5, the cartridge 100 includes a side portion 120 and a seat portion 110. In contrast to the structure shown in FIG. 3, the heat insulating member 130 is configured to be included inside the side portion 120 . According to the embodiment in which the heat insulating member 130 is embedded in the interior of the cartridge 100, since the heat insulating member 130 is not exposed to the outside of the cartridge 100, The risk is reduced, and stable heat insulation performance can be secured.

In the case where the heat insulating member 130 is provided on the side surface portion 120 of the cartridge 100 as in the above embodiment, the portion of the side surface portion 120 other than the heat insulating member 130, (130). Therefore, it is possible to prevent the mechanical support force from being deteriorated when the cartridge 100 is stacked due to the heat insulating member 130.

Also, preferably, the heating member 140 may be provided in the seating portion 110 of the cartridge 100, as shown in FIGS.

According to this embodiment of the present invention, heat generated by the heating member 140 can be efficiently transferred to the secondary battery 200. In the cartridge 100, the seating portion 110 may be formed to have a larger surface area than the side portion 120. The pouch type secondary battery can be configured in a shape having approximately two large surfaces, and the cartridge 100 can be configured such that one surface of two large surfaces of the secondary battery is seated on the seat portion 110 . Therefore, according to the configuration in which the heating member 140 is provided in the seating portion 110, the heat generated by the heating member 140 can be transmitted to the large surface of the secondary battery, so that more heat is transmitted to the secondary battery And the temperature rising rate around the secondary battery can be further increased.

In particular, the heating member 140 may be formed in a plate shape, as shown in FIG. 2, and may be provided in the seating portion 110. In this case, the heating member 140 may cover at least a part of the wide bottom surface of the secondary battery that is seated in the seating portion 110 in a form that is laid down parallel to the ground. More preferably, the heating member 140 is configured to cover the entire lower surface of the secondary battery that is seated in the seating portion 110.

Preferably, the heating member 140 may be provided on the upper surface of the seating part 110, as shown in FIG.

According to this embodiment of the present invention, since the secondary battery directly contacts the upper portion of the heating member 140, the heat generated from the heating member 140 can be efficiently transferred to the secondary battery. However, the present invention is not necessarily limited to these embodiments, and the heating member 140 may be provided in the seating portion 110 of the cartridge 100 in various forms.

6 is a cross-sectional view schematically showing the configuration of a cartridge 100 for a secondary battery according to another embodiment of the present invention.

Referring to FIG. 6, the heating member 140 may be configured such that at least a portion of the lower portion, such as a portion indicated by B, is exposed to the outside, that is, the lower portion. More specifically, the cartridge 100 includes a side portion 120 and a seating portion 110, wherein the seating portion 110 has a central portion that is hollow when viewed from above, . The heating member 140 may be provided on an empty portion of the seating portion 110 so that the heating member 140 may be exposed not only in the upper direction but also in the lower direction.

According to this configuration of the present invention, when two or more cartridges 100 are stacked in the vertical direction, the heating member 140 provided in the specific cartridge 100 is also exposed to the inner space of the cartridge 100 Of course, the inner space of the cartridge 100 stacked thereunder can also be exposed. Therefore, in this case, the heat generated from the heating member 140 provided in the specific cartridge 100 is not limited to the secondary battery housed in the cartridge 100, but is stored in the cartridge 100 stacked thereunder The heat can be effectively transferred to the secondary battery in the form of radiation or the like. Therefore, when a plurality of cartridges 100 are stacked, the lower part of the secondary battery receives heat directly from the heating member 140 of the cartridge 100 accommodated therein, and the upper part of the secondary battery is connected to another cartridge Heat can be directly supplied from the heating member 140 of the secondary battery 100 so that heat transfer efficiency to the secondary battery can be greatly improved.

Meanwhile, the heat insulating member 130 may be configured to be removable at least partially.

7 is a cross-sectional view schematically showing a configuration of a cartridge 100 for a secondary battery according to another embodiment of the present invention.

7, the heat insulating member 130 may be provided on both the inner surface and the outer surface of the side portion 120 of the cartridge 100, but at least a part thereof may be configured to be detachable. For example, as indicated by the arrow in the figure, the outer heat insulating member 130 may be configured to be fixable in the form of being attached to the outer surface of the side portion 120. The heat insulating member 130 may be configured to be detachable at a later stage.

According to this embodiment of the present invention, when the outer heat insulating member 130 is damaged or broken, only the outer heat insulating member 130 is replaced without replacing the entire cartridge 100, so that the cartridge 100 can be economically and easily It is possible to prevent the deterioration of the thermal effect of the cartridge 100 from being deteriorated.

In addition, according to this embodiment, it is possible to adjust the internal temperature of the cartridge 100 by attaching or detaching the heat insulating member 130. For example, when the cartridge 100 is not provided with the outer heat insulating member 130 and the internal temperature of the cartridge 100 is judged to be low, the outer heat insulating member 130 is attached, It is possible to increase the internal temperature. Alternatively, when it is determined that the internal temperature of the cartridge 100 is low, the internal temperature of the cartridge 100 may be increased by replacing the heat insulating member 130 with a material having a high thermal insulation.

Preferably, the heat insulating member 130 and the heating member 140 may be provided together on at least one of the seating portion 110 and the side surface portion 120.

8 is a cross-sectional view schematically showing the configuration of the cartridge 100 according to another embodiment of the present invention.

Referring to Fig. 8, the heat insulating member 130 and the heating member 140 may be configured to be included together in the side portion 120. Fig. At this time, the heating member 140 may be positioned inside the heat insulating member 130 (the left side of the right side portion 120 of the left side portion 120 and the left side portion 120 of FIG. 8). In this case, the heat supplied by the heating member 140 can be blocked by the heat insulating member 130 outwardly, and can be supplied only to the inner space of the cartridge 100, so that the heating and insulation efficiency can be further improved .

Here, the heating member 140 may be provided on at least one of the upper portion and the lower portion of the side portion 120, as shown in FIG. Particularly, since the sealing portion of the secondary battery can be located in the central portion of the side portion 120, according to the embodiment in which the heating member 140 is configured to be positioned at the upper portion and / or the lower portion of the side portion 120, The volume of the cartridge 100 can be reduced.

8, the heating member 140 is provided on only a part of the inner surface of the heat insulating member 130. However, the heating member 140 may be provided on the entire inner surface of the heat insulating member 130 Do.

9 is a perspective view schematically showing a configuration of a cartridge 100 according to another embodiment of the present invention.

Referring to Fig. 9, the heat insulating member 130 and the heating member 140 may be configured to be included together in the seating portion 110. [0053] Fig. Of course, the heat insulating member 130 may be provided on the side portion 120. [

9, the heating member 140 may be embodied in the shape of a hot wire. That is, in the previous embodiment, the heating member 140 is mainly formed in the form of a plate, that is, the heating member 140 is shown in the form of a heat plate. However, the present invention is not necessarily limited to such an embodiment. As shown in FIG. 9, the heating member 140 may be realized in the form of a heat wire.

For example, the heating member 140 in the form of a hot wire may be attached to the upper surface of the inner surface of the heat insulating member 130, as shown in Fig. Alternatively, the heating member 140 in the form of a hot wire may be embedded in the heat insulating member 130.

According to the embodiment in which the heating member 140 is formed in a hot wire shape, it is possible to reduce the weight increase by the heating member 140, thereby facilitating the lightening of the cartridge 100 and reducing the space occupied by the heating member 140 The volume of the cartridge 100 can be reduced or the storage capacity of the secondary battery can be increased.

In the above embodiments, the heat insulating member 130 is provided on the side surface 120, but the heat insulating member 130 may form the side surface 120. In other words, the side surface portion 120 may be composed of the heat insulating member 130 only. For example, the side portion 120 may be made of glass wool, or an insulating material such as EPS or XPS. According to this embodiment of the present invention, since the side portion 120 has a generally heat insulating property, the warmth by the cartridge 100 can be improved, and it is unnecessary to provide a separate heat insulating member 130 on the side surface portion 120 The manufacturing of the cartridge 100 becomes easier, and the volume and weight of the cartridge 100 can be reduced.

In addition, unlike the above-described embodiments, the heating member 140 may constitute the seating part 110. In other words, the seat portion 110 may be composed only of the heating member 140. [ For example, the seating part 110 can be realized in the form of a heat plate, and the secondary battery can be brought into contact with the seating part 110 in the form of a heat plate. According to this embodiment of the present invention, since the seating portion 110 itself is the heating member 140, it is not necessary to provide a separate substrate other than the heating member 140 as the seating portion 110, The manufacturing can be made easier, and the volume and weight of the cartridge 100 can be reduced.

10 is a cross-sectional view schematically showing a configuration of a cartridge 100 for a secondary battery according to another embodiment of the present invention. 11 is a cross-sectional view schematically showing a structure in which the cartridge 100 of Fig. 10 is stacked in the vertical direction.

Referring to FIGS. 10 and 11, the secondary battery cartridge 100 according to the present invention may further include a lower cover part 150. FIG. The lower cover part 150 may be configured to at least partially surround the outside of the side part 120 of the cartridge 100 stacked on the lower part of the lower part of the cartridge 100 when stacked on the upper part of the other cartridge 100. [ The length of the inner space of the lower cover part 150 of the cartridge 100 may be greater than the length of the inner space of the lower side cover part 150. [

According to this embodiment of the present invention, when the cartridge 100 is stacked in the vertical direction, the lower cover portion 150 of the cartridge 100 stacked on the upper layer is housed in the inner space of the cartridge 100, The side surface of the secondary battery. Accordingly, when the inner space of the lower cartridge 100 is viewed as a reference, the lower cover portion 150 of the upper cartridge 100 is located outside the side portion 120 of the inner space. Therefore, Can be blocked more reliably.

In particular, as shown in FIGS. 10 and 11, a heat insulating member 130 may be provided on at least a part of the lower cover part 150. In this case, the inner space of the cartridge 100 stacked on the lower layer is composed of the heat insulating member 130 provided on the side portion 120 of the cartridge 100 stacked on the lower layer, Since the heat insulating member 130 provided in the heat insulating member 150 is present, the heat insulating member 130 may have a plurality of layers in the horizontal direction. Therefore, according to this embodiment of the present invention, heat loss in the lateral direction can be effectively prevented.

10 and 11, in the cartridge 100 for a rechargeable battery according to the present invention, the mounting portion 110 itself may be constituted by the heating member 140. As shown in FIG. In this case, the cartridge 100 positioned in the upper layer not only supplies heat to the secondary battery stored in the internal space of the cartridge 100, but also can supply heat to the secondary battery housed in the cartridge 100 located in the lower layer, .

12 is a cross-sectional view schematically showing a configuration of a cartridge 100 for a secondary battery according to another embodiment of the present invention.

Referring to FIG. 12, the cartridge 100 may accommodate a plurality of secondary batteries, and each of the secondary batteries may be disposed at a predetermined distance from each other in the horizontal direction. To this end, the cartridge 100 may include a partition 160.

Here, the partition wall portion 160 may be positioned vertically in the same manner as the side wall portion 120 in one cartridge 100, but may be located at a central portion of the cartridge 100, unlike the side wall portion 120 . In addition, the barrier ribs 160 may be located in a space between the secondary cells spaced apart from each other by a predetermined distance. That is, the partition 160 is formed in a vertical space in the inner space defined by the side part 120, so that the internal space defined by the side part 120 can be divided into two or more horizontally have. Accordingly, with respect to the cartridge 100 having the partition 160, a plurality of secondary cells are accommodated in a horizontal space in an internal space defined by the partition 160 and / or the side portion 120 .

Particularly, the partition 160 may include a heat insulating member 130 and / or a heating member 140.

For example, as shown in Fig. 12, the heating member 140 may be provided on both sides of the partition wall portion 160. Fig. The heat can be supplied to the side of the secondary battery located on both sides of the partition wall 160 by the heating member 140 provided in the partition wall portion 160 The heating member 140 may be omitted. The heat insulating member 130 may be provided on the inner surface of the side portion 120. The heat is supplied only to the inner space of the cartridge 100 from the side of the partition wall portion 160 and the heat of the inner space flows out of the cartridge 100 by the heat insulating member 130 .

In this case, the heat exchange may be reduced or blocked between the plurality of internal spaces defined by the partition 160 and the side portion 120 . Therefore, the heat of each inner space may not flow out to the other inner space.

In the various drawings, the heat insulating member 130 is shown on the inner surface of the cartridge 100 as a reference. For example, as shown in the various drawings, the heat insulating member 130 may be attached to the inner surface of the side portion 120 and / or the seating portion 110 where the secondary battery is located. According to this embodiment, the heat radiated from the secondary battery side or the heat supplied by the heating member 140 mainly comes in contact with only the heat insulating member 130 and the portion of the cartridge 100 other than the heat insulating member 130, It is hardly reachable. Therefore, in this case, the movement of heat through the base material of the cartridge 100 can be blocked, thereby enhancing the warming effect of the internal space of the cartridge 100. However, the present invention is not necessarily limited to these embodiments. For example, as shown in FIG. 5, the heat insulating member 130 may be provided in the interior of the cartridge 100 in a form embedded in the cartridge 100.

In the above embodiments, only one layer of the secondary battery is accommodated in one cartridge 100. However, the present invention is not limited to these embodiments.

13 is a cross-sectional view schematically showing a configuration of a cartridge 100 for a secondary battery according to another embodiment of the present invention.

Referring to Fig. 13, as in the previous embodiments, the cartridge 100 has a side portion 120 and a seat portion 110. As shown in Fig. The side part 120 may be provided with a heat insulating member 130 and the seating part 110 may be provided with a heating member 140. However, unlike the previous embodiments, the seating portion 110 may be located at a central portion of the side portion 120, rather than at the lower end of the side portion 120. [ Therefore, as indicated by I1 and I2 in the figure, two internal spaces are provided in one cartridge 100, and each of these two internal spaces can accommodate different secondary batteries.

According to this embodiment of the present invention, since two layers of secondary batteries are accommodated by only one cartridge 100, stacking of a plurality of secondary batteries can be performed even with a small number of cartridges 100 and fewer cartridge 100 stacking processes. May be possible.

13, the heating member 140 itself can constitute the seating portion 110. [0064] As shown in Fig. That is, the seating part 110 is formed only of the heating member 140, and other components other than the heating member 140 may not be provided. According to this configuration of the present invention, since the heating member 140 itself constitutes the seating portion 110, the weight and volume of the cartridge 100 can be minimized, and two heating members 140 stacked one above the other It is possible to supply heat to both the secondary batteries.

14 is a cross-sectional view schematically showing a configuration of a battery pack according to an embodiment of the present invention. More specifically, FIG. 14 is a diagram schematically illustrating a mode in which heat is transferred in a battery pack in which a plurality of cartridges 100 of FIG. 3 are stacked.

Referring to FIG. 14, a plurality of cartridges 100 are stacked in a vertical direction, and a secondary battery is accommodated in an inner space of the stacked cartridges 100. The side surface 120 of each cartridge 100 is provided with the heat insulating member 130 so that the heat can be substantially blocked without passing through the side surface 120 to a predetermined temperature. Therefore, heat leakage through the side portion 120 may not be achieved. On the other hand, since the mounting portion 110 of the cartridge 100 is not provided with the heat insulating member 130, the heat can be transferred between the upper and lower stacked cartridges 100. Thus, in this configuration, the heat may show a flow pattern as indicated by the arrows.

Further, although not shown in the drawing, heat transfer from the lower portion of each cartridge 100 to the upper direction may be more likely to occur by the heating member 140.

On the other hand, in the case of the cartridge 100 stacked at the lowermost part, when heat is discharged to the outside through the seating part 110 of the cartridge 100, the heat may flow out to the outside of the battery pack. Therefore, the battery pack according to the present invention may further include a lower cover 300, as shown in FIG.

The lower cover 300 is a component that is coupled to a lower portion of the cartridge 100 located at the bottom of the plurality of cartridges 100 stacked in the vertical direction. For example, the lower cover 300 may be provided with protrusions on its upper portion so that the protrusions are coupled to the lower groove H of the cartridge 100 positioned at the lowest layer. Particularly, at least a part of the lower cover 300 may be made of an insulating material. For example, the lower cover 300 may be made of a heat insulating material such as glass wool, EPS, or XPS as a whole. Alternatively, the lower cover 300 may include a heat insulating member 130 made of glass wool, EPS, or XPS on at least the upper surface thereof.

Thus, due to the presence of the lower cover 300, which is at least partially made of an insulating material, the heat of the lowermost cartridge 100 can be located in the internal space thereof without flowing out through the mounting portion 110 to the outside.

Also, preferably, the battery pack according to the present invention may further include an upper cover 400, as shown in FIG.

The upper cover 400 is a component that is coupled to an upper portion of the cartridge 100 positioned at the uppermost position among the plurality of cartridges 100 stacked in the vertical direction. For example, the upper cover 400 may be configured such that a groove is formed at a lower portion thereof, and the projection P of the cartridge 100 positioned at the uppermost layer is coupled to the groove. At least a part of the upper cover 400 may be made of an insulating material. For example, the upper cover 400 may be entirely or wholly constructed of insulating material such as glass wool, EPS, or XPS.

The cartridge 100 may be configured such that the upper portion of the inner space is opened for insertion of the secondary battery. When such an opening portion is exposed to the cartridge 100 located on the uppermost layer, The heat of the secondary battery stored in the battery 100 can easily be discharged to the outside. 14, when the heat transfer between the stacked cartridges 100 is made easy, the heat leakage through the open portion of this uppermost layer is less likely to be caused by the ambient temperature of the secondary battery housed in the other cartridge 100 . However, when the upper cover 400, which is at least partially formed of an insulating material, is coupled to the upper portion of the cartridge 100 located at the uppermost layer as in the above embodiment, heat leakage from the upper portion of the battery pack is prevented, The internal space temperature of the cartridge 100 located in the other layer as well as the cartridge 100 can be prevented from being lowered to a predetermined temperature or lower.

Preferably, the heat insulating member 130 may be provided on the upper portion of the side surface portion 120, particularly in the concave-convex portion. The upper portion of the side portion 120 is in contact with the other cartridge 100 to be relatively engaged with the other portion. However, according to this embodiment, the sealing member 130 and the heat- The heat insulating property can be enhanced. Therefore, the heat retention of the internal space of the cartridge 100 can be further improved.

Also, preferably, the concave-convex portion may be formed on the side portion 120 more than once. According to this configuration of the present invention, since the heat outflow path by the plurality of concave-convex portion coupling structures becomes long and complicated, heat outflow can be blocked more effectively.

In the above embodiments, the heat insulating member 130 is provided only on the side surface 120. However, the heat insulating member 130 may be provided on the mounting portion 110. [

15 is a cross-sectional view schematically showing a configuration of a cartridge 100 for a secondary battery according to still another embodiment of the present invention. 16 is a diagram schematically showing the manner in which heat is transferred in a battery pack in which a plurality of cartridges 100 of FIG. 15 are stacked.

First, referring to FIG. 15, a heat insulating member 130 may be provided on the seating part 110 together with the side part 120. In the case of such a cartridge 100, heat transfer in the horizontal direction through the side portion 120 is blocked, and heat transfer in the vertical direction through the mounting portion 110 can be blocked.

16, when the plurality of cartridges 100 are stacked in the vertical direction, heat transfer between the stacked cartridges 100 is blocked so that the inner spaces of the respective cartridges 100 are thermally separated from each other . Therefore, the heat transfer may be in the form of being separated from each other within each cartridge 100, as indicated by arrows in the figure.

According to this configuration of the present invention, even if the temperature of some of the cartridges 100 is suddenly lowered so that the performance of the secondary batteries housed in the corresponding cartridges 100 can not be exhibited properly, Ambient temperature may not drop. Therefore, heat leakage due to damage or destruction of some of the cartridges 100 can be prevented from affecting the other cartridges 100. Particularly, this embodiment can be more advantageously applied when the risk of damage or breakage of the battery pack is high.

14, in order to thermally block the upper open portion of the cartridge 100 located at the uppermost layer, the upper cover 400, which is at least partially made of an insulating material, is coupled .

The thickness of the heat insulating member 130 of the side surface portion 120 is made thicker than the mounting portion 110 in the structure in which the heat insulating member 130 is provided in both the side surface portion 120 and the seating portion 110 as in the above- Or a material having a higher heat insulating performance than the seating portion 110, such as a material having a low thermal conductivity, may be used for the heat insulating member 130 of the side surface portion 120. This is because the heat transfer through the side portion 120 as compared with the heat transfer through the seat portion 110 may cause heat loss of the battery pack immediately.

17 is a cross-sectional view schematically showing a configuration of a battery pack according to an embodiment of the present invention.

Referring to FIG. 17, the battery pack according to the present invention may further include a case 500, in addition to the secondary battery 200 and the cartridge 100.

The case 500 has an empty space therein, and accommodates a plurality of secondary batteries and a plurality of cartridges 100 in the internal space.

In particular, in the battery pack according to the present invention, at least a part of the case 500 may be made of an insulating material. For example, the case 500 may be configured such that the heat insulating member 130 is attached to an inner surface thereof, as shown in the drawing. Alternatively, the case 500 may be configured such that the heat insulating member 130 is attached to the outer surface of the case 500 or is embedded in the case 500. Alternatively, the case 500 may be entirely made of a heat insulating material.

According to this embodiment of the present invention, the thermal effect of the internal space of the cartridge 100 can be further improved by the case 500, and the temperature can be raised further.

Also, preferably, the battery pack according to the present invention may further include a temperature measurement unit and a control unit.

The temperature measuring unit is a component for measuring the ambient temperature, for example, attached to the inside or outside of the cartridge 100 to measure the temperature around the secondary battery.

The control unit can control the operation of the heating member 140 based on the temperature measured by the temperature measuring unit. To this end, the control unit may store the reference temperature range as a reference for operating the heating member 140. [ For example, if the temperature range in which the secondary battery housed in the battery pack can achieve optimum performance is 70 to 150 占 폚, the control section can store the temperature range as a reference range. When the temperature measured by the temperature measuring unit is lower than 70 캜, the control unit can raise the temperature around the secondary battery to 70 캜 or higher by allowing the heating member 140 to operate.

In addition, the control unit may operate the heating member 140 at the time when the driving of the battery pack is started. For example, the control unit can cause the heating member 140 to operate when the battery pack is in the unused state and enters the use state, that is, when charging or discharging is started. The performance of the secondary battery such as the all-solid-state battery can be deteriorated at the time of the initial driving because the amount of heat generated by the secondary battery during the driving is small. However, according to the embodiment, when the secondary battery is driven by the operation of the heating member 140 It can have a high ambient temperature for stable performance.

Here, the controller may be implemented by a battery management system (BMS) of a battery pack. The BMS is a component generally included in a battery pack, and is a component that manages the operation of a battery pack such as charging or discharging. According to the embodiment in which the control unit is implemented by the BMS, it is not necessary to physically separate the control unit for operating the heating member 140 as another component, thereby reducing the cost and increasing the space efficiency of the battery pack .

On the other hand, the heating member 140 can receive power from at least a part of the secondary battery stored in the cartridge 100. For example, when the battery pack includes 10 secondary batteries and 10 cartridges 100, and each secondary battery is housed in a different cartridge 100, May be configured to receive power from a secondary battery stored in the cartridge 100 to generate heat. According to this embodiment of the present invention, it is not necessary to separately provide a secondary battery for supplying power to the heating member 140 in the battery pack.

Further, when a single secondary battery 140 is configured to be able to supply power from a plurality of secondary batteries, the control unit compares the SOC (State Of Charge) of each secondary battery, So that power can be supplied to the member 140. According to this embodiment of the present invention, the inter-cell balancing can be performed while securing the power supply to the heating member 140.

Also, preferably, the battery pack according to the present invention may include two or more types of secondary batteries having different ion conductivities at room temperature. That is, the battery pack according to the present invention includes a plurality of secondary batteries, and the plurality of secondary batteries are not composed of the same type of secondary batteries, but may be composed of different kinds of secondary batteries. Here, the different kinds may mean that the ionic conductivities are different from each other at least at room temperature.

Here, in the battery pack according to the present invention, power may be supplied from the secondary battery having a high ionic conductivity at room temperature to the heating member 140.

For example, the battery pack according to the present invention may include both a liquid electrolyte lithium battery and an all solid lithium battery having ion conductivity different from each other at room temperature as a secondary battery. In particular, the battery pack may include a plurality of pre-solid cells and a small number of liquid electrolyte cells. In this case, the main energy storage and output source of the battery pack may be the entire solid-state battery, and the liquid electrolyte secondary battery may be the power supply to the heating member 140.

In such a configuration, when the battery pack is initially driven, the temperature inside the battery pack may not be high enough to make it difficult for the entire solid-state battery to operate properly, so that the control unit controls the liquid- . Then, the heating member 140 generates heat, and the temperature inside the battery pack may rise to a temperature at which the operation of the all-solid-state cells can be activated. When the ambient temperature of the all-solid-state battery is raised to an appropriate temperature due to the heat supplied by the heating member 140, the controller can operate the solid-state battery in a stable manner.

The battery pack according to the present invention can be applied to an automobile such as an electric car or a hybrid car. That is, the automobile according to the present invention may include the battery pack according to the present invention.

Also, the battery pack according to the present invention can be applied to a power storage device. That is, the power storage device according to the present invention may include the battery pack according to the present invention. Such a power storage device can be applied to various fields and places such as a smart grid system for regulating power supply and demand, a charging station of an electric vehicle, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

In the present specification, terms indicating upward, downward, leftward, rightward, forward, and backward directions are used, but these terms are for convenience of explanation only and may vary depending on the position of an object or the position of an observer It will be apparent to those skilled in the art that the present invention is not limited thereto.

100: Cartridge
110:
120:
130:
140: heating member
150: Lower layer cover part
160:
200: secondary battery
300: bottom cover
400: upper cover
500: Case

Claims (22)

A plurality of secondary batteries; And
A plurality of secondary batteries each having at least a part of the secondary battery mounted thereon and capable of being laminated in at least one direction, the secondary battery including a heat insulating member for blocking the heat of the secondary battery from flowing out to the outside and a heating member for supplying heat to the secondary battery Cartridge
Lt; / RTI >
The secondary battery is a pre-solid battery in which the electrolyte is in a solid state,
The cartridge includes a seating portion on which at least a part of the lower portion of the secondary battery is seated, and a side portion covering the side surface of the secondary battery,
Wherein concave and convex portions are formed at upper and lower ends of the side portion so as to be mutually engageable so that the plurality of cartridges are stacked in the vertical direction,
Wherein the heat insulating member is provided on the side surface portion,
Wherein the heating member is provided in the seating portion, and at least a portion of the heating member is exposed to the upper portion and the lower portion of the seating portion.
delete delete delete The method according to claim 1,
Wherein the heat insulating member is provided on an inner surface or inside of the heat insulating member. The method according to claim 1,
Wherein the side portion is formed only of the heat insulating member.
delete The method according to claim 1,
Wherein the heating member is provided on an upper surface of the seat portion. The method according to claim 1,
Wherein the seat portion is constituted only by the heating member.
delete The method according to claim 1,
Wherein the heat insulating member is detachable from at least a part of the cartridge. The method according to claim 1,
Wherein the cartridge further comprises a lower cover part configured to at least partially surround a side surface of the secondary battery housed in the inner space of the cartridge stacked at the lower part when stacked. The method according to claim 1,
Wherein the cartridge further comprises a plurality of secondary batteries arranged in a horizontal direction and further includes a partition wall part formed in a vertical direction between a plurality of secondary cells arranged in the horizontal direction. 14. The method of claim 13,
Wherein the partition wall portion includes at least one of the heat insulating member and the heating member. The method according to claim 1,
Wherein the heat insulating member comprises at least one material selected from the group consisting of glass wool, EPS, XPS, polyurethane foam, water soft foam, urea foam, vacuum insulation panel, PVC, and heat reflecting material. The method according to claim 1,
Further comprising a lower cover, at least a part of which is made of an insulating material, and which is coupled to a lower portion of the cartridge stacked at the lowermost position. The method according to claim 1,
Further comprising an upper cover, at least a part of which is made of an insulating material, and which is coupled to an upper portion of the cartridge stacked on the uppermost portion to close the upper open space. The method according to claim 1,
Further comprising: a temperature measuring unit for measuring an ambient temperature; and a controller for controlling operation of the heating member according to a temperature measured by the temperature measuring unit. The method according to claim 1,
Wherein the heating member is supplied with power from at least a part of the secondary battery stored in the cartridge. The method according to claim 1,
And at least two kinds of secondary batteries having different ion conductivities at room temperature. An automobile comprising the battery pack according to any one of claims 1, 5, 6, 8, 9, 11, 20, A power storage device comprising a battery pack according to any one of claims 1, 5, 6, 8, 9, 11 to 20.

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