Battery cooling system and battery device comprising same

Abstract

According to exemplary embodiments, a battery device is provided. The device comprises: a pack housing including a base plate, which includes first side plates having first cooling channels and second side plates having second cooling channels, and first and second sidewalls, which are coupled to the base plate and are perpendicular to the base plate; first battery cell assemblies on the first side plates; second battery cell assemblies on the second side plates; a first inlet port coupled to the first sidewall; a second inlet port coupled to the second sidewall; first distribution piping connected to the first cooling channels; second distribution piping connected to the second cooling channels; first collection piping connected to the first cooling channels; second collection piping connected to the second cooling channels; and a 3-way valve connected to each of the first and second inlet ports.

Description

Battery cooling system and battery device including same

[0001] The present invention relates to a battery cooling system and a battery device including the same. This application claims the benefit of Korean Application No. 10-2024-0114736, filed August 27, 2024, which is incorporated herein by reference in its entirety.

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. They are widely used as a power source for various wireless devices, including handsets, laptops, and cordless vacuum cleaners. Recently, improved energy density and economies of scale have dramatically reduced the per-unit manufacturing cost of secondary batteries. Furthermore, as the range of battery electric vehicles (BEVs) has increased to match that of fuel-powered vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility.

[0003] The technological development trend for secondary batteries for mobility is improving energy density and safety. The safety of secondary batteries for mobility is crucial, as it directly impacts the lives of passengers. Safety in secondary batteries can be achieved through mechanical robustness, reliable electrical insulation, and delayed heat transfer in the event of thermal runaway.

[0004] The technical idea of ​​the present invention is to provide a battery cooling system with improved safety and a battery device including the same.

[0005] According to exemplary embodiments of the present invention for solving the above-described problem, a battery device is provided. The device includes a pack housing including a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; first battery cell assemblies on the first side plates; second battery cell assemblies on the second side plates; a first input port coupled to the first side wall; a second input port coupled to the second side wall; a first distribution pipe connected to the first cooling channels; a second distribution pipe connected to the second cooling channels; a first collection pipe connected to the first cooling channels; a second collection pipe connected to the second cooling channels; and a 3-way valve connected to each of the first and second input ports.

[0006] The above 3-WAY valve is configured to allow or block the flow of cooling fluid through the first and second input ports.

[0007] The above 3-WAY valve is an electronic valve.

[0008] The above battery device further includes a BMS (BATTERY MANAGEMENT SYSTEM) configured to control the 3-WAY valve.

[0009] When each of the first and second battery cell assemblies is normal, the BMS is configured to control the 3-WAY valve to allow the flow of cooling fluid through the first and second input ports.

[0010] When the first battery cell assemblies are at an abnormally high temperature, the BMS is configured to control the 3-WAY valve to allow the flow of cooling fluid through the first input port.

[0011] When the first battery cell assemblies are in an abnormally high temperature state, the BMS is configured to control the 3-WAY valve to block the flow of cooling fluid through the second input ports.

[0012] Each of the first and second cooling channels extends in a first direction parallel to a mounting surface of the base plate, the base plate including a center plate interposed between the first side plates and the second side plates, and the center plate including a center beam interposed between the first battery cell assemblies and the second battery cell assemblies.

[0013] The first sidewall includes a first input channel connected to the first input port and the first distribution pipe, and the second sidewall includes a second input channel connected to the second input port and the second distribution pipe.

[0014] The battery device further includes a first discharge port connected to the first collection pipe; and a second discharge port connected to the second collection pipe.

[0015] According to exemplary embodiments, a battery cooling system is provided. The system includes a pack housing including a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; a first input port coupled to the first side wall; a second input port coupled to the second side wall; a first distribution pipe connected to the first cooling channels; a second distribution pipe connected to the second cooling channels; a first collection pipe connected to the first cooling channels; a second collection pipe connected to the second cooling channels; and a 3-way valve connected to each of the first and second input ports.

[0016] The above 3-WAY valve is configured to allow or block the flow of cooling fluid through the first and second input ports.

[0017] The above 3-WAY valve is an electronic valve.

[0018] The first side wall includes a first input channel connected to the first input port and the first distribution pipe.

[0019] The second side wall includes a second input channel connected to the second input port and the second distribution pipe.

[0020] The system further comprises a first discharge port connected to the first collection pipe; and a second discharge port connected to the second collection pipe.

[0021] According to exemplary embodiments, a battery cooling system is provided. The system includes a pack housing including a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; a first input port coupled to the first side wall; a second input port coupled to the second side wall; a first distribution pipe connected to the first cooling channels; a second distribution pipe connected to the second cooling channels; a first collection pipe connected to the first cooling channels; a second collection pipe connected to the second cooling channels; a first discharge port connected to the first collection pipe; a second discharge port connected to the second collection pipe; and a 3-way valve connected to each of the first and second discharge ports.

[0022] According to exemplary embodiments of the present invention, when a thermal runaway event occurs in some of the battery cell assemblies of a battery device, a portion of the base plate adjacent to the battery cell assemblies can be intensively cooled. This can delay or prevent heat propagation, thereby enhancing the safety of the battery device.

[0023] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0024] Figures 1 and 2 are plan views illustrating a battery device according to exemplary embodiments.

[0025] Figures 3 to 5 are plan views illustrating the operation of a battery device according to exemplary embodiments.

[0026] Figure 6 illustrates a battery device according to other exemplary embodiments.

[0027] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0028] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0029] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0030] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0031]

[0032] (Embodiments 1 and 2)

[0033] Figures 1 and 2 are plan views illustrating a battery device (100) according to exemplary embodiments. In Figure 2, a plurality of battery cell assemblies (120_1, 120_2) are omitted.

[0034] FIGS. 3 to 5 are plan views showing the operation of a battery device (100) according to exemplary embodiments.

[0035] Referring to FIGS. 1 and 2, the battery device (100) may include a pack housing (110), a plurality of battery cell assemblies (120_1, 120_2), a 3-WAY valve (130), first and second input ports (141, 143), first and second distribution pipes (151, 153), first and second collection pipes (161, 163), first and second discharge ports (171, 173), and a BMS (BATTERY MANAGEMENT SYSTEM) (180).

[0036] In the battery device (100), the remaining components except for the plurality of battery cell assemblies (120_1, 120_2) may constitute a battery cooling system. That is, the pack housing (110), the 3-WAY valve (130), the first and second input ports (141, 143), the first and second distribution pipes (151, 153), the first and second collection pipes (161, 163), the first and second discharge ports (171, 173), and the BMS (180) may be collectively referred to as a battery cooling system.

[0037] The pack housing (110) may provide a space for mounting battery cell assemblies (120_1, 120_2). The pack housing (110) may include a base plate (111) and side walls (112, 113, 114, 115). The base plate (111) may include a center plate (111C), first side plates (111S1), and second side plates (111S2).

[0038] Two directions substantially parallel to the mounting surface of the base plate (111) are defined as the X direction and the Y direction. The mounting surface of the base plate (111) may face a plurality of battery cell assemblies (120_1, 120_2). The direction substantially perpendicular to the mounting surface of the base plate (111) is defined as the Z direction. Each of the X direction, the Y direction, and the Z direction may be substantially perpendicular to each other. Unless otherwise stated, the definitions of directions are the same for the drawings below.

[0039] Each of the center plate (111C), the first side plates (111S1), and the second side plates (111S2) may be provided by an extrusion process. The extrusion direction of each of the center plate (111C), the first side plates (111S1), and the second side plates (111S2) may be the X direction. The center plate (111C), the first side plates (111S1), and the second side plates (111S2) may be arranged in the Y direction. The center plate (111C) may be interposed between the first side plates (111S1) and the second side plates (111S2).

[0040] The center plate (111C), the first side plates (111S1), and the second side plates (111S2) can be joined to each other. The center plate (111C), the first side plates (111S1), and the second side plates (111S2) can be joined by, for example, friction stir welding. Accordingly, the center plate (111C), the first side plates (111S1), and the second side plates (111S2) can have welding surfaces therebetween.

[0041] However, it is not limited thereto, and the center plate (111C), the first side plates (111S1), and the second side plates (111S2) may be joined by a method such as arc welding, laser welding, electron beam welding, friction welding, or ultrasonic welding.

[0042] Each of the first side plates (111S1) may include first cooling channels (CH1). Each of the second side plates (111S2) may include second cooling channels (CH2). Each of the first and second cooling channels (CH1, CH2) may extend in the X direction.

[0043] The first and second cooling channels (CH1, CH2) can provide a path for the cooling fluid to flow. The first and second cooling channels (CH1, CH2) can be spaced apart in the Y direction. The first and second cooling channels (CH1, CH2) can be arranged along the Y direction.

[0044] The center plate (111C) may include a center beam (111CB). The center beam (111CB) may protrude from the mounting surface of the base plate (111). The center beam (111CB) may extend in the X direction.

[0045] The side wall (112) may be provided by an extrusion process. The side wall (112) may include a first input channel (112CH). The side wall (112) may be joined to the first side plates (111S1) by a method such as friction stir welding.

[0046] The side wall (113) may be provided by an extrusion process. The side wall (113) may include a second input channel (113CH). The side wall (113) may be joined to the second side plates (111S2) by a method such as friction stir welding.

[0047] The side walls (114, 115) may be on the base plate (111). The side walls (114, 115) may be joined to the base plate (111) by a method such as brazing. The side walls (112, 113, 114, 115) may horizontally surround a plurality of battery cell assemblies (120_1, 120_2).

[0048] A plurality of battery cell assemblies (120_1, 120_2) may be on the base plate (111). The battery cell assemblies (120_1) may be on the first side plates (111S1). The battery cell assemblies (120_2) may be on the second side plates (111S2).

[0049] The battery device (100) may be of a modular type, and each of the plurality of battery cell assemblies (120_1, 120_2) may not include a module frame. As another example, the battery device (100) may be of a modular type, and each of the plurality of battery cell assemblies (120_1, 120_2) may include a module frame.

[0050] Each of the plurality of battery cell assemblies (120_1, 120_2) may include a plurality of banks connected in series with each other. Each of the plurality of banks may include one or more parallel-connected battery cells. The number of the series-connected banks and the number of the parallel-connected battery cells may be determined according to the magnitude of the voltage and current to be output from each of the battery cell assemblies (120_1, 120_2).

[0051] A plurality of battery cells are the basic units of a lithium-ion battery, i.e., a secondary battery. Each of the plurality of battery cells includes an electrode assembly, an electrolyte, and a case. Each of the plurality of battery cells may be any one of a cylindrical battery cell, a prismatic battery cell, and a pouch-type battery cell. The electrode assembly of the cylindrical battery cell is housed in a cylindrical metal can. The electrode assembly of the prismatic battery cell is housed in a prismatic metal can. The electrode assembly of the pouch-type battery cell is housed in a pouch case including an aluminum laminate sheet.

[0052] The electrode assembly may include an anode, a cathode, and a separator interposed between the anode and the cathode. The electrode assembly may be either a jelly-roll type or a stack type. The jelly-roll type electrode assembly may include a winding structure of the anode, the cathode, and the separator interposed therebetween. The stack type electrode assembly may include a plurality of sequentially stacked anodes, a plurality of cathodes, and a plurality of separators interposed therebetween.

[0053] A plurality of battery cell assemblies (120_1, 120_2) can be arranged in the X direction and the Y direction. In FIG. 1, the number of the plurality of battery cell assemblies (120_1, 120_2) arranged in the X direction is three, and the number of the plurality of battery cell assemblies (120_1, 120_2) arranged in the Y direction is two. Therefore, the arrangement of the plurality of battery cell assemblies (120_1, 120_2) can be referred to as a 3 * 2 arrangement. A person skilled in the art will be able to easily arrive at a plurality of battery cell assemblies (120_1, 120_2) arranged in an M * N arrangement (wherein, M and N are each integers greater than or equal to 2) based on the description herein.

[0054] The center beam (111CB) can isolate the battery cell assemblies (120_1) and the battery cell assemblies (120_2) in the Y direction. The center beam (111CB) can be interposed between the battery cell assemblies (120_1) and the battery cell assemblies (120_2).

[0055] The arrangement of the center beam (111CB) and the plurality of battery cell assemblies (120_1, 120_2) disclosed in FIG. 1 is a non-limiting example and does not limit the technical concept of the present invention in any way. A person skilled in the art will readily be able to achieve a battery pack comprising various arrangements and numbers of center beams, cross beams, and battery cell assemblies based on the description herein.

[0056]

[0057] The 3-WAY valve (130) may be, for example, an electronic valve. The 3-WAY valve (130) may be controlled by the BMS (180), but is not limited thereto. The 3-WAY valve (130) may be connected to each of the first and second input ports (141, 143). The 3-WAY valve (130) may be configured to supply cooling fluid supplied from the outside to the first input port (141), to the second input port (143), or to each of the first and second input ports (141, 143).

[0058] The first input port (141) can be connected to the first input channel (112CH). Cooling fluid introduced into the first input port (141) can flow to the first distribution pipe (151) through the first input channel (112CH).

[0059] The second input port (143) can be connected to the second input channel (113CH). Cooling fluid introduced into the second input port (143) can flow to the second distribution pipe (153) through the second input channel (113CH).

[0060] The first distribution pipe (151) can be connected to each of the first input channel (112CH) and the first cooling channels (CH1). The cooling fluid flowing through the first input channel (112CH) can be distributed from the first distribution pipe (151) to the first cooling channels (CH1).

[0061] The second distribution pipe (153) can be connected to each of the second input channel (113CH) and the second cooling channels (CH2). The cooling fluid flowing through the second input channel (113CH) can be distributed from the second distribution pipe (153) to the second cooling channels (CH2).

[0062] The cooling fluid distributed to the first cooling channels (CH1) can cool the battery cell assemblies (120_1) while flowing along the first cooling channels (CH1). The cooling fluid flowing along the first cooling channels (CH1) can be collected in the first collection pipe (161).

[0063] The cooling fluid distributed to the second cooling channels (CH2) can cool the battery cell assemblies (120_2) while flowing along the second cooling channels (CH2). The cooling fluid flowing along the second cooling channels (CH2) can be collected in the second collection pipe (163).

[0064] The first collection pipe (161) may be connected to each of the first cooling channels (CH1) and the first discharge port (171). The cooling fluid flowing into the first collection pipe (161) may be discharged through the first discharge port (171). The first cooling channels (CH1) may be connected in parallel between the first distribution pipe (151) and the first collection pipe (161).

[0065] The second collection pipe (163) may be connected to each of the second cooling channels (CH2) and the second discharge port (173). The cooling fluid flowing into the second collection pipe (163) may be discharged through the second discharge port (173). The second cooling channels (CH2) may be connected in parallel between the second distribution pipe (153) and the second collection pipe (163).

[0066] The BMS (180) may be interposed between the plurality of battery cell assemblies (120_, 120_2) and the side wall (114). The BMS (180) may be configured to perform monitoring, balancing, and control of the battery pack. Monitoring of the battery device (100) may include measuring voltage and current of specific nodes within the plurality of battery cell assemblies (120_1, 120_2) and measuring temperature of set locations within the battery device (100). The battery device (100) may include measuring instruments for measuring the voltage, current, and temperature described above.

[0067] Balancing of the battery device (100) is an operation to reduce the deviation between the plurality of battery cell assemblies (120_1, 120_2). Control of the battery device (100) includes preventing the occurrence of overcharge, overdischarge, and overcurrent. Through monitoring, balancing, and control, the battery device (100) can operate under optimal conditions, thereby preventing shortening of the lifespan of each of the plurality of battery cell assemblies (120_1, 120_2).

[0068] The BMS (180) may be configured to control the 3-WAY valve (130). Referring to FIGS. 1 and 3, in a normal state, uniform cooling is required throughout the battery device (100). The BMS (180) may be configured to control the operation of the 3-WAY valve (130) to allow the flow of cooling fluid through each of the first and second input ports (141, 143). Accordingly, the first flow (F1) of cooling fluid through the first cooling channels (CH1) and the second flow (F2) of cooling fluid through the second cooling channels (CH2) may be allowed, and each of the plurality of battery cell assemblies (120_1, 120_2) may be uniformly cooled.

[0069]

[0070] Referring to FIGS. 1 and 4, some of the battery cell assemblies (120_1) may be in an abnormally high temperature state (e.g., thermal runway). Here, the thermal runway of the plurality of battery cell assemblies (120_1, 120_2) is a state in which a temperature change of the plurality of battery cell assemblies (120_1, 120_2) further accelerates the temperature change, which is an uncontrollable positive feedback. The plurality of battery cell assemblies (120_1, 120_2) in the thermal runway state exhibit a rapid temperature increase and emit a large amount of high-pressure gas and combustion debris.

[0071] In this case, the BMS (180) may be configured to control the operation of the 3-WAY valve (130) to allow the flow of cooling fluid through the first input port (141) and block the flow of cooling fluid through the second input port (143). By the operation of the 3-WAY valve (130), the first flow (F1) of cooling fluid through the first cooling channels (CH1) may be allowed, and the flow of cooling fluid through the second cooling channels (CH2) may be blocked. When only the first flow (F1) of cooling fluid through the first cooling channels (CH1) is allowed, the flow rate of the cooling fluid through the first cooling channels (CH1) may increase. Accordingly, the battery cell assemblies (120_1) may be effectively cooled, and the propagation of an abnormally high temperature state of the battery cell assemblies (120_1) may be delayed or blocked.

[0072]

[0073] Referring to FIGS. 1 and 5, some of the battery cell assemblies (120_2) may be in an abnormally high temperature state (e.g., thermal runaway). In this case, the BMS (180) may be configured to control the operation of the 3-WAY valve (130) to allow the flow of cooling fluid through the second input port (143) and block the flow of cooling fluid through the first input port (141). By the operation of the 3-WAY valve (130), the second flow (F1) of cooling fluid through the second cooling channels (CH2) may be allowed, and the flow of cooling fluid through the first cooling channels (CH1) may be blocked. When only the first flow (F1) of cooling fluid through the first cooling channels (CH1) is allowed, the flow rate of the cooling fluid through the second cooling channels (CH2) may increase. Accordingly, the battery cell assemblies (120_2) can be effectively cooled, and the propagation of an abnormally high temperature state of the battery cell assemblies (120_2) can be delayed or blocked.

[0074]

[0075] Referring again to FIGS. 1 and 2, the battery device (100) may further include an exhaust device. The exhaust device may be configured to delay thermal propagation by releasing high-temperature gas within the battery device (100) to the outside when at least one of the plurality of battery cell assemblies (120_1, 120_2) is in a state of thermal runaway.

[0076] The battery device (100) may further include additional electrical components. The electrical components may be mounted on the pack housing (110). The electrical components may include any electronic components necessary to operate the battery device (100). The additional electrical components may include a cooling device, a Power Relay Assembly (PRA), a safety plug, etc. The cooling device may include a cooling fan. The cooling fan may prevent overheating of each of the plurality of battery cell assemblies (120_1, 120_2) by circulating air inside the battery device (100). The PRA may be configured to supply or cut off power from the high-voltage battery to an external load (e.g., a vehicle motor). The PRA may protect the plurality of battery cell assemblies (120_1, 120_2) and the external load (e.g., a vehicle motor) by cutting off power supply to the external load (e.g., a vehicle motor) in a situation where an abnormal voltage, such as a voltage surge, occurs.

[0077] The battery device (100) may further include a plurality of bus bars configured to electrically connect a plurality of battery cell assemblies (120_1, 120_2). The plurality of battery cell assemblies (120_1, 120_2) may be connected in series by the plurality of bus bars. Accordingly, the battery device (100) may be configured to output a high voltage to an external load (e.g., a motor of a vehicle).

[0078] The battery device (100) may further include a lead plate coupled to the side walls (112, 113, 114, 115). The lead plate may cover elements mounted inside the battery device (100), such as battery cell assemblies (120_1, 120_2) and electrical components. The lead plate may be fixed to the battery device (100) by a mechanical coupling means, such as a fastening member.

[0079]

[0080] (Example 3)

[0081] FIG. 6 is a plan view illustrating a battery device (101) according to other exemplary embodiments.

[0082] Referring to FIG. 6, the battery device (101) may include a pack housing (110), a plurality of battery cell assemblies (120_1, 120_2), a 3-WAY valve (131), first and second input ports (141, 143), first and second distribution pipes (151, 153), first and second collection pipes (161, 163), first and second discharge ports (171, 173), and a BMS (180).

[0083] In the battery device (101), the remaining components except for the plurality of battery cell assemblies (120_1, 120_2) may constitute a battery cooling system. That is, the pack housing (110), the 3-WAY valve (131), the first and second input ports (141, 143), the first and second distribution pipes (151, 153), the first and second collection pipes (161, 163), the first and second discharge ports (171, 173), and the BMS (180) may be collectively referred to as a battery cooling system.

[0084] In addition, the pack housing (110), the plurality of battery cell assemblies (120_1, 120_2), the first and second input ports (141, 143), the first and second distribution pipes (151, 153), the first and second collection pipes (161, 163), the first and second discharge ports (171, 173), and the BMS (180) are substantially the same as those described with reference to FIGS. 1 to 5, and therefore, a duplicate description thereof will be omitted.

[0085]

[0086] The 3-WAY valve (131) may be, for example, an electronic valve. The 3-WAY valve (131) may be controlled by the BMS (180), but is not limited thereto. The 3-WAY valve (131) may be connected to each of the first and second discharge ports (171, 173). The 3-WAY valve (131) may be configured to transfer the cooling fluid flowing from the first discharge port (171), the second discharge port (173), or each of the first and second discharge ports (171, 173) to an external cooling fluid supply system.

[0087]

[0088] The 3-WAY valve (131) can be configured to allow discharge through each of the first discharge port (171) and the second discharge port (173), similarly to FIG. 3, thereby allowing a first flow (F1) through the first cooling channels (CH1) and a second flow (F2) through the second cooling channels (CH2).

[0089] The 3-WAY valve (131) can be configured to allow the first flow (F1) through the first cooling channels (CH1) and block the second flow (F2) through the second cooling channels (CH2), similar to FIG. 4, by only allowing discharge through the first discharge port (171).

[0090] The 3-WAY valve (131) can be configured to block the first flow (F1) through the first cooling channels (CH1) and allow the second flow (F2) through the second cooling channels (CH2), similar to FIG. 5, by only allowing discharge through the second discharge port (173).

[0091]

[0092] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

A pack housing comprising a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; First battery cell assemblies on the first side plates; Second battery cell assemblies on the second side plates; A first input port coupled to the first side wall; A second input port coupled to the second side wall; A first distribution pipe connected to the first cooling channels; A second distribution pipe connected to the second cooling channels; A first collection pipe connected to the first cooling channels; a second collection pipe connected to the second cooling channels; and A battery device comprising a 3-WAY valve connected to each of the first and second input ports. In the first paragraph, A battery device characterized in that the above 3-WAY valve is configured to allow or block the flow of cooling fluid through the first and second input ports. In the first paragraph, A battery device characterized in that the above 3-WAY valve is an electronic valve. In the first paragraph, A battery device further comprising a BMS (BATTERY MANAGEMENT SYSTEM) configured to control the above 3-WAY valve. In paragraph 4, A battery device characterized in that when each of the first and second battery cell assemblies is normal, the BMS is configured to control the 3-WAY valve to allow the flow of cooling fluid through the first and second input ports. In paragraph 4, A battery device characterized in that when the first battery cell assemblies are in an abnormally high temperature state, the BMS is configured to control the 3-WAY valve to allow the flow of cooling fluid through the first input port. In paragraph 6, A battery device characterized in that when the first battery cell assemblies are in an abnormally high temperature state, the BMS is configured to control the 3-WAY valve to block the flow of cooling fluid through the second input ports. In the first paragraph, Each of the first and second cooling channels extends in a first direction parallel to the mounting surface of the base plate, The base plate includes a center plate interposed between the first side plates and the second side plates, and A battery device characterized in that the center plate includes a center beam interposed between the first battery cell assemblies and the second battery cell assemblies. In the first paragraph, The first side wall includes a first input channel connected to the first input port and the first distribution pipe, and A battery device characterized in that the second side wall includes a second input channel connected to the second input port and the second distribution pipe. In the first paragraph, a first discharge port connected to the first collection pipe; and A battery device further comprising a second discharge port connected to the second collection pipe. A pack housing comprising a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; A first input port coupled to the first side wall; A second input port coupled to the second side wall; A first distribution pipe connected to the first cooling channels; A second distribution pipe connected to the second cooling channels; A first collection pipe connected to the first cooling channels; a second collection pipe connected to the second cooling channels; and A battery cooling system comprising a 3-WAY valve connected to each of the first and second input ports. In Article 11, A battery cooling system, wherein the 3-way valve is configured to allow or block the flow of cooling fluid through the first and second input ports. In Article 11, A battery cooling system characterized in that the above 3-WAY valve is an electronic valve. In Article 11, The first side wall includes a first input channel connected to the first input port and the first distribution pipe, and A battery cooling system, characterized in that the second side wall includes a second input channel connected to the second input port and the second distribution pipe. In Article 11, a first discharge port connected to the first collection pipe; and A battery cooling system further comprising a second discharge port connected to the second collection pipe. A pack housing comprising a base plate including first side plates including first cooling channels and second side plates including second cooling channels, and first and second side walls coupled to the base plate and perpendicular to the base plate; A first input port coupled to the first side wall; A second input port coupled to the second side wall; A first distribution pipe connected to the first cooling channels; A second distribution pipe connected to the second cooling channels; A first collection pipe connected to the first cooling channels; A second collection pipe connected to the second cooling channels; A first discharge port connected to the first collection pipe; a second discharge port connected to the second collection pipe; and A battery cooling system comprising a 3-WAY valve connected to each of the first and second discharge ports.

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