Battery device

Abstract

A technical idea of the present invention provides a battery device comprising: a housing including a pump insertion channel into which cooling fluid flows, and a cooling channel connected to the pump insertion channel; a pump of which a portion is inserted into the pump insertion channel of the housing, and which causes the cooling fluid in the pump insertion channel of the housing to flow to the cooling channel of the housing; and a cell assembly, which is accommodated in the housing and includes battery cells.

Description

battery device

[0001] The present invention relates to a battery device. The present application claims the benefit of Korean application No. 10-2024-0139279, filed on October 14, 2024, which is incorporated herein by reference in its entirety.

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as energy sources for various wireless devices such as handsets, laptops, and cordless vacuum cleaners. Recently, as the manufacturing cost per unit capacity of secondary batteries has decreased dramatically due to improved energy density and economies of scale, and as the driving range of BEVs (battery electric vehicles) has increased to a level equivalent to that of fuel vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility.

[0003] The trend in the technological development of secondary batteries for mobility is the improvement of energy density and safety. The safety of secondary batteries for mobility is critical as it is directly related to the lives of passengers. The safety of secondary batteries can be achieved through mechanical robustness, the reliability of electrical insulation, and the delay of heat transfer in the event of a thermal runaway event.

[0004] The problem that the technical concept of the present invention aims to solve is to provide a battery device.

[0005] To solve the above-mentioned problem, the technical concept of the present invention provides a battery device comprising: a housing including a pump insertion channel into which a cooling fluid is introduced and a cooling channel connected to the pump insertion channel; a pump configured such that a portion thereof is inserted into the pump insertion channel of the housing and causes the cooling fluid within the pump insertion channel of the housing to flow into the cooling channel of the housing; and a cell assembly including battery cells, which is housed within the housing.

[0006] In exemplary embodiments, the pump comprises an impeller and a motor configured to rotate the impeller, and the impeller is characterized by being received within the pump insertion channel of the housing.

[0007] In exemplary embodiments, the pump further comprises a case that accommodates the motor, and the case is characterized by being fastened to the housing.

[0008] In exemplary embodiments, the housing is characterized by comprising: a base frame supporting the cell assembly; and a side frame extending along the perimeter of the base frame to surround the cell assembly and on which the pump is mounted.

[0009] In exemplary embodiments, the side frame comprises a first side wall having the pump insertion channel, a second side wall opposite to the first side wall in a first direction, and a third side wall extending from the first side wall to the second side wall, and the cooling channel comprises a base channel extending in the first direction within the base frame; and a first side channel connected to the pump insertion channel and provided on the first side wall.

[0010] In exemplary embodiments, the housing further comprises a transfer pipe coupled to the edge portion of the base frame, the transfer pipe comprises a connecting channel extending between the first side channel of the first side wall and the base channel, and the first side channel of the first side wall, the connecting channel of the transfer pipe, and the base channel of the base frame are sequentially connected.

[0011] In exemplary embodiments, the second side wall includes a second side channel connected to the base channel of the base frame, and the third side wall includes a third side channel extending between the first side channel of the first side wall and the second side channel of the second side wall, and the first side channel of the first side wall, the third side channel of the third side wall, the second side channel of the second side wall, and the base channel of the base frame are connected sequentially.

[0012] In exemplary embodiments, the pump comprises an impeller, a motor configured to rotate the impeller, and a case housing the motor, wherein the impeller is housed within the pump insertion channel of the first side wall and the case is fastened to the first side wall.

[0013] In exemplary embodiments, the pump insertion channel extends in the first direction between the inner and outer surfaces of the first side wall and penetrates the first side wall, the pump is coupled to the inner surface of the first side wall to cover the pump insertion channel, and the housing is coupled to the outer surface of the first side wall to cover the pump insertion channel and further comprises a cover having a channel connected to the pump insertion channel.

[0014] In exemplary embodiments, the housing is characterized by comprising: a base frame that supports the cell assembly and on which the pump is mounted; and a side frame that extends along the perimeter of the base frame to surround the cell assembly.

[0015] In exemplary embodiments, the pump is characterized by being housed within the housing.

[0016] In exemplary embodiments, it is characterized by further including a BMS (BATTERY MANAGEMENT SYSTEM) configured to control the pump.

[0017] In exemplary embodiments, the pump is characterized as being an electric pump.

[0018] According to exemplary embodiments, the battery device may have a pump-housing integrated structure in which a pump is mounted in a housing and a pump component, such as an impeller, is inserted into a channel of the housing. When the battery device has a pump-housing integrated structure, separate piping is not required to connect the pump and the housing, thereby reducing the manufacturing cost of the battery device, and the pressure loss of the cooling fluid can be reduced because the cooling fluid discharged from the pump is supplied directly to the cooling channel of the housing.

[0019] The effects obtainable from the exemplary embodiments of the present invention are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure belong from the following description. That is, unintended effects resulting from the implementation of 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.

[0020] FIGS. 1 and FIGS. 2 are plan views showing a battery device according to exemplary embodiments.

[0021] FIG. 3 is a perspective view showing the pump separated from the housing in the battery device.

[0022] FIG. 4 is a perspective view showing a pump mounted in a housing in a battery device.

[0023] FIG. 5 is a plan view showing a part of a battery device according to exemplary embodiments.

[0024] Figure 6 is a cross-sectional view along the line VI-VI' of Figure 5.

[0025] FIG. 7 is a plan view showing a part of a battery device according to exemplary embodiments.

[0026] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor can appropriately define the concepts of terms to best describe his invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention.

[0027] Therefore, 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; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0028] In addition, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the invention, such detailed description is omitted.

[0029] Since embodiments of the present invention are provided to more fully explain the invention to those skilled in the art, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or schematically depicted for clearer explanation. Accordingly, the size or proportion of each component does not entirely reflect the actual size or proportion.

[0030]

[0031] (1st embodiment)

[0032] FIGS. 1 and FIGS. 2 are plan views showing a battery device (10) according to exemplary embodiments. FIGS. 2 shows the battery device (10) of FIG. 1 with some components omitted. In FIG. 2, the flow direction of the cooling fluid is indicated by an arrow. FIG. 3 is a perspective view showing the pump (310) separated from the housing (100) in the battery device (10). FIG. 4 is a perspective view showing the pump (310) mounted on the housing (100) in the battery device (10).

[0033] Referring to FIGS. 1 to 4, the battery device (10) may include a housing (100), a plurality of cell assemblies (200), and a pump (310).

[0034] The housing (100) may provide an internal space for accommodating a plurality of cell assemblies (200). The housing (100) may include a base frame (110) and a side frame (120).

[0035] A base frame (110) can support a plurality of cell assemblies (200). The base frame (110) may have a flat plate shape extending approximately in a first horizontal direction (e.g., X-axis direction) and a second horizontal direction (e.g., Y-axis direction). The base frame (110) may be composed of a plurality of segments arranged in the second horizontal direction (e.g., Y-axis direction). Each of the plurality of segments constituting the base frame (110) may have a flat plate shape extending approximately in a first horizontal direction (e.g., X-axis direction) and a second horizontal direction (e.g., Y-axis direction) and may be manufactured through an extrusion process. The plurality of segments constituting the base frame (110) may be joined together by welding.

[0036] A side frame (120) can be coupled to a base frame (110). The side frame (120) can be coupled to the perimeter of the base frame (110) and can extend along the perimeter of the base frame (110). The side frame (120) can extend continuously along the perimeter of the base frame (110) to surround a plurality of cell assemblies (200). When viewed in a planar view, the side frame (120) may have a shape of a roughly square ring. The side frame (120) can define an internal space in which a plurality of cell assemblies (200) are accommodated together with the base frame (110). The housing (100) may further include a top cover (not shown) coupled to the side frame (120) and covering a plurality of cell assemblies (200).

[0037] The side frame (120) may include a first side wall (121) and a second side wall (122) opposite in a first horizontal direction (e.g., X-axis direction), and a third side wall (123) and a fourth side wall (124) opposite in a second horizontal direction (e.g., Y-axis direction). The first side wall (121) may be attached to a first edge portion of the base frame (110), and the second side wall (122) may be attached to a second edge portion of the base frame (110) opposite to the first edge portion of the base frame (110). The third side wall (123) may be attached to a third edge portion of the base frame (110) and may extend from the first side wall (121) to the second side wall (122). The fourth side wall (124) can be joined to the fourth edge of the base frame (110) opposite to the third edge of the base frame (110) and can extend from the first side wall (121) to the second side wall (122).

[0038] A plurality of cell assemblies (200) may be arranged in a first horizontal direction (e.g., X-axis direction) and / or a second horizontal direction (e.g., Y-axis direction) of the base frame (110). Each individual cell assembly (200) may correspond to a battery module or a cell-to-pack unit. The housing (100) may include a center beam (191) provided on the base frame (110). Some of the plurality of cell assemblies (200) may be provided on one side of the center beam (191), and other parts of the plurality of cell assemblies (200) may be provided on the other side of the center beam (191).

[0039] Each individual cell assembly (200) may include a plurality of battery cells (250). Each individual battery cell (250) is a basic unit of a lithium-ion battery, i.e., a secondary battery. Each individual battery cell (250) may include an electrode assembly, an electrolyte, and a cell case. The electrode assembly embedded in the cell case may include a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. Depending on the assembly form, the electrode assembly may be either a jelly-roll type or a stack type. A jelly-roll type electrode assembly may include a wound structure of a positive electrode, a negative electrode, and a separator interposed between them. A stack type electrode assembly may include a plurality of positive electrodes, a plurality of negative electrodes, and a plurality of separators interposed between them, which are stacked sequentially. The positive electrode may include a positive current collector and a positive active material. The negative electrode may include a negative current collector and a negative active material.

[0040] The individual battery cells (250) may correspond to pouch-type battery cells, cylindrical battery cells, or prismatic battery cells. The electrode assembly of a pouch-type battery cell is provided within a pouch case containing an aluminum laminate sheet. The electrode assembly of a cylindrical battery cell is provided within a cylindrical metal can. The electrode assembly of a prismatic battery cell is provided within a prismatic metal can.

[0041] A plurality of battery cells (250) provided in an individual cell assembly (200) may be connected in series and / or in parallel. For example, a plurality of battery cells (250) may be connected in series with each other. For example, a plurality of battery cells (250) may be connected in parallel with each other. For example, when a set of two or more battery cells (250) connected in parallel is defined as a bank, one bank consisting of two or more battery cells (250) connected in parallel with each other and another bank consisting of two or more battery cells (250) connected in parallel with each other may be connected in series.

[0042] In exemplary embodiments, a plurality of battery cells (250) may be arranged in a first horizontal direction (e.g., X-axis direction), and individual battery cells (250) may be extended in a second horizontal direction (e.g., Y-axis direction). An electrode lead may be provided at least one of the two ends of an individual battery cell (250) along the second horizontal direction (e.g., Y-axis direction). The electrode leads of adjacent battery cells (250) among the plurality of battery cells (250) may be electrically and physically connected to each other.

[0043] A plurality of cell assemblies (200) can each be thermally and physically bonded to a base frame (110) by a thermally conductive adhesive layer. The thermally conductive adhesive layer may include a thermal resin and / or a thermal interface material (TIM).

[0044] The housing (100) may include a cooling channel (160) configured to allow a cooling fluid to flow. The cooling channel (160) is a passage provided inside the housing (100). As the cooling fluid flows along the cooling channel (160) of the housing (100), cooling of a plurality of cell assemblies (200) mounted in the housing (100) may be achieved. The cooling fluid may include a coolant and / or a refrigerant.

[0045] A cooling fluid supply unit (410) provided outside the housing (100) may be configured to supply cooling fluid to the housing (100) and to recover cooling fluid discharged from the housing (100). The cooling fluid supply unit (410) may include a heat exchanger configured to control the temperature of the cooling fluid, piping for delivering the cooling fluid, etc. The cooling fluid supply unit (410) may be configured to perform actions such as controlling the cooling fluid to a predetermined temperature using the heat exchanger, supplying the cooling fluid controlled to the predetermined temperature to the housing (100), recovering cooling fluid discharged from the housing (100), and controlling the cooling fluid to a predetermined temperature.

[0046] The cooling channel (160) of the housing (100) may include a plurality of base channels (161) provided in the base frame (110) and side channels provided in the side frame (120).

[0047] A plurality of base channels (161) may each extend in a first horizontal direction (e.g., X-axis direction) within the base frame (110) and may provide a passage for guiding a cooling fluid in the first horizontal direction (e.g., X-axis direction). A plurality of base channels (161) may be spaced apart from each other in a second horizontal direction (e.g., Y-axis direction). A plurality of base channels (161) may each overlap in a vertical direction (e.g., Z-axis direction) with at least one of a plurality of cell assemblies (200).

[0048] A side channel may be provided on at least one of a first side wall (121), a second side wall (122), a third side wall (123), and a fourth side wall (124). The side channel may provide a passage for guiding a cooling fluid in a first horizontal direction (e.g., X-axis direction) and / or a second horizontal direction (e.g., Y-axis direction). In exemplary embodiments, the side channel may include a first side channel (162) provided on the first side wall (121).

[0049] The housing (100) may further include a first transfer pipe (131) comprising a first connection channel (163) configured to allow cooling fluid to flow, a second transfer pipe (133) comprising a second connection channel (164) configured to allow cooling fluid to flow, and a third transfer pipe (135) comprising a third connection channel (165) configured to allow cooling fluid to flow. The first transfer pipe (131), the second transfer pipe (133), and the third transfer pipe (135) may be provided on the outside of the base frame (110) and the side frame (120). The first connection channel (163) of the first transfer pipe (131), the second connection channel (164) of the second transfer pipe (133), and the third connection channel (165) of the third transfer pipe (135) can form a cooling channel (160) of the housing (100) together with a plurality of base channels (161) of the base frame (110) and a side channel of the side frame (120).

[0050] A portion of the first transmission pipe (131) may be supported by the third side wall (123), and another portion of the first transmission pipe (131) may be connected to the second edge portion of the base frame (110). The first transmission pipe (131) may be connected to the second edge portion of the base frame (110) so that the first connection channel (163) is fluidly connected to some of the plurality of base channels (161). The first connection channel (163) of the first transmission pipe (131) may be connected to the first side channel (162). The first transmission pipe (131) may be connected to the side frame (120) so that the first connection channel (163) is fluidly connected to the first side channel (162). The first connection channel (163) of the first transmission pipe (131) may extend between the first side channel (162) and some of the plurality of base channels (161).

[0051] A portion of the second transfer pipe (133) may be supported by the fourth side wall (124), and another portion of the second transfer pipe (133) may be connected to the second edge portion of the base frame (110). The second transfer pipe (133) may be connected to the second edge portion of the base frame (110) so that the second connecting channel (164) is fluidly connected to another portion of the plurality of base channels (161). The second connecting channel (164) of the second transfer pipe (133) may be connected to the first side channel (162). The second transfer pipe (133) may be connected to the side frame (120) so that the second connecting channel (164) is fluidly connected to the first side channel (162). The second connecting channel (164) of the second transfer pipe (133) may extend between the first side channel (162) and the other portion of the plurality of base channels (161).

[0052] The third transfer pipe (135) may be connected to the first edge portion of the base frame (110). The third transfer pipe (135) may be connected to the first edge portion of the base frame (110) such that the third connecting channel (165) is fluidly connected to a plurality of base channels (161) of the base frame (110). The third connecting channel (165) of the third transfer pipe (135) may be configured to transfer cooling fluid between the plurality of base channels (161) and the cooling fluid supply unit (410). For example, cooling fluid discharged from the plurality of base channels (161) of the base frame (110) may be collected in the third connecting channel (165) of the third transfer pipe (135) and then transferred to the cooling fluid supply unit (410).

[0053] In exemplary embodiments, the cooling channel (160) may have a first flow path in which a first side channel (162), a first connecting channel (163), some of the base channels (161) of the plurality of base channels (161) and a third connecting channel (165) are sequentially connected, and a second flow path in which a first side channel (162), a second connecting channel (164), some of the base channels (161) of the plurality of base channels (161) and a third connecting channel (165) are sequentially connected.

[0054] The pump (310) may be mounted on the housing (100). The pump (310) may be mounted on the inner side of the first side wall (121) and accommodated within the internal space of the housing (100) together with a plurality of cell assemblies (200). The pump (310) may be placed within the space provided between the plurality of cell assemblies (200) and the first side wall (121). Alternatively, the pump (310) may be mounted on the outer side of the first side wall (121). The pump (310) may increase the hydraulic pressure of the cooling fluid by pumping the cooling fluid. The pump (310) may increase the hydraulic pressure of the cooling fluid so that the cooling fluid flows along the cooling channel (160) of the housing (100) at a sufficient flow rate. The pump (310) may be an electric pump.

[0055] In exemplary embodiments, the pump (310) may include an impeller (311), a motor (313) configured to rotate the impeller (311), and a case (315) housing the motor (313). The case (315) may provide a sealed internal space for housing various components, such as a circuit board, in addition to the motor (313). The pump (310) may rotate the impeller (311) to increase the flow rate of the cooling fluid supplied to the pump (310) and increase the discharge pressure of the cooling fluid discharged from the pump (310).

[0056] The pump (310) may be mounted in the housing (100) such that a portion thereof is accommodated in the space provided in the housing (100). The space in the housing (100) into which the pump (310) is inserted communicates with the cooling channel (160) of the housing (100), and the cooling fluid pumped by the pump (310) within the space of the housing (100) may be discharged directly into the cooling channel (160) of the housing (100).

[0057] In exemplary embodiments, the pump (310) may be mounted on a first side wall (121) of the side frame (120), and the first side wall (121) may have a pump insertion channel (170) into which a portion of the pump (310) is inserted. The pump (310) may be mounted on the first side wall (121) such that a portion thereof is inserted into the pump insertion channel (170) provided within the first side wall (121). The pump insertion channel (170) may correspond to an inlet into which cooling fluid supplied from the cooling fluid supply unit (410) flows, and may be in direct communication with the cooling channel (160).

[0058] In exemplary embodiments, the impeller (311) of the pump (310) may be accommodated within the pump insertion channel (170) of the first side wall (121) and configured to rotate within the pump insertion channel (170) of the first side wall (121). The pump insertion channel (170) of the first side wall (121) may be directly connected to the first side channel (162) which constitutes the cooling channel (160) of the housing (100), and the cooling fluid pumped by the pump (310) within the pump insertion channel (170) of the first side wall (121) may be directly discharged into the first side channel (162).

[0059] The pump insertion channel (170) of the first side wall (121) may be formed to penetrate the first side wall (121) in a first horizontal direction (e.g., X-axis direction). That is, the pump insertion channel (170) may extend in a first horizontal direction (e.g., X-axis direction) between the inner and outer surfaces of the first side wall (121) and penetrate the first side wall (121) in a first direction. The pump (310) may be coupled to the inner surface of the first side wall (121) to cover the pump insertion channel (170) of the first side wall (121). The pump (310) may cover the pump insertion channel (170) of the first side wall (121) so that the pump insertion channel (170) is not exposed to the internal space of the housing (100) in which a plurality of cell assemblies (200) are accommodated. The case (315) of the pump (310) can be fastened to the first side wall (121) through a fastening member such as a bolt. By fastening the case (315) of the pump (310) to the first side wall (121), the pump (310) can be fixed to the first side wall (121). A sealing member such as a gasket to prevent leakage of cooling fluid can be applied to the fastening portion between the case (315) of the pump (310) and the first side wall (121).

[0060] The housing (100) may further include a cover (180) coupled to the outer surface of the first side wall (121). The cover (180) may cover the pump insertion channel (170) so that the pump insertion channel (170) of the first side wall (121) is not exposed through the outer surface of the first side wall (121). The cover (180) may have a channel (181) communicating with the pump insertion channel (170) of the first side wall (121). Cooling fluid provided from the cooling fluid supply unit (410) may be supplied to the pump insertion channel (170) of the first side wall (121) via the channel (181) of the cover (180).

[0061] The cooling fluid provided from the cooling fluid supply unit (410) can be delivered to the pump insertion channel (170) of the first side wall (121) through the channel (181) of the cover (180), and the pump (310) can pump the cooling fluid within the pump insertion channel (170) of the first side wall (121) and discharge it to the cooling channel (160) of the housing (100). As illustrated in FIG. 2, the cooling fluid discharged from the pump (310) may be recovered to the cooling fluid supply unit (410) after flowing along a first flow path in which the first side channel (162), the first connection channel (163), some of the base channels (161) of the plurality of base channels (161), and the third connection channel (165) are sequentially connected, or it may be recovered to the cooling fluid supply unit (410) after flowing along a second flow path in which the first side channel (162), the second connection channel (164), other of the base channels (161) of the plurality of base channels (161), and the third connection channel (165) are sequentially connected.

[0062] The battery device (10) may further include a battery management system (BMS) (330). The BMS (330) may be accommodated within the internal space of the housing (100) and may be placed on the base frame (110). The BMS (330) may be placed within the space provided between a plurality of cell assemblies (200) and a first side wall (121). The BMS (330) may be configured to perform monitoring, balancing, and control of the battery device (10). Monitoring of the battery device (10) may include measuring the voltage and current of specific nodes within the plurality of cell assemblies (200) and measuring the temperature of set locations within the battery device (10). The battery device (10) may include measuring instruments for measuring the voltage, current, and temperature described above.

[0063] Balancing of the battery device (10) is an operation that reduces deviations between multiple cell assemblies (200). Control of the battery device (10) includes preventing overcharging, over-discharging, and overcurrent. Through monitoring, balancing, and control, the battery device (10) can operate under optimal conditions, and accordingly, the shortening of the lifespan of each of the multiple cell assemblies (200) can be prevented.

[0064] The BMS (330) may be configured to control the pump (310). The BMS (330) may control the pump (310) by applying a control signal to the pump (310). The BMS (330) may be connected to the pump (310) to enable signal transmission. Communication between the BMS (330) and the pump (310) may be wired or wireless. In exemplary embodiments, the BMS (330) may be connected to the pump (310) to enable signal transmission via a wire, harness, etc. In exemplary embodiments, the BMS (330) may be connected to the pump (310) via wireless communication, and the BMS (330) and the pump (310) may each include an antenna for transmitting and receiving wireless signals.

[0065] In exemplary embodiments, control of the pump (310) may be performed by a controller of an external device in which the battery device (10) is mounted. For example, the battery device (10) may be mounted in an electric vehicle, and the controller of the electric vehicle may be responsible for controlling the pump (310).

[0066] In the battery device (10), the remaining components, excluding the plurality of cell assemblies (200), may form a battery cooling structure. The housing (100), pump (310), and BMS (330) may collectively form a battery cooling structure.

[0067] According to exemplary embodiments, the battery device (10) may have a pump-housing integrated structure in which a pump (310) is mounted in a housing (100) and a part of the pump (310), such as an impeller (311), is inserted into a channel of the housing (100). When the battery device (10) has a pump-housing integrated structure, no separate piping is required to connect the pump (310) and the housing (100), so the manufacturing cost of the battery device (10) can be reduced, and the pressure loss of the cooling fluid can be reduced because the cooling fluid discharged from the pump (310) is supplied directly to the cooling channel (160) of the housing (100).

[0068]

[0069] (2nd Example)

[0070] FIG. 5 is a plan view showing a part of a battery device (10A) according to exemplary embodiments. FIG. 6 is a cross-sectional view along the line VI-VI' of FIG. 5. Hereinafter, the battery device (10A) illustrated in FIG. 5 and FIG. 6 will be described with a focus on the differences from the battery device (10) described with reference to FIG. 1 to FIG. 4.

[0071] Referring to FIGS. 5 and 6, in the housing (100A) of the battery device (10A), the second side wall (122) may include a second side channel (167) communicating with some of the base channels (161) of the base frame (110), and the third side wall (123) may include a third side channel (166) extending between the first side channel (162) of the first side wall (121) and the second side channel (167) of the second side wall (122). The second side channel (167) of the second side wall (122) and the third side channel (166) of the third side wall (123) may form a cooling channel (160A) of the housing (100A). As illustrated in FIG. 5, the cooling fluid discharged from the pump (310) can be recovered to the cooling fluid supply unit (410) after flowing along a flow path in which the first side channel (162), the third side channel (166), the second side channel (167), some of the base channels (161) of the plurality of base channels (161) and the third connecting channel (165) are sequentially connected.

[0072] The second side wall (122) may include a second side channel (169) communicating with other parts of the base channels (161) among the plurality of base channels (161) of the base frame (110), and the fourth side wall (124) may include a fourth side channel (168) extending between the first side channel (162) of the first side wall (121) and the second side channel (169) of the second side wall (122). The second side channel (169) of the second side wall (122) and the fourth side channel (168) of the fourth side wall (124) may form a cooling channel (160A) of the housing (100A). As illustrated in FIG. 5, the cooling fluid discharged from the pump (310) can be recovered to the cooling fluid supply unit (410) after flowing along a flow path in which the first side channel (162), the fourth side channel (168), the second side channel (169), some of the base channels (161) among the plurality of base channels (161) and the third connecting channel (165) are sequentially connected.

[0073]

[0074] (3rd Example)

[0075] FIG. 7 is a plan view showing a part of a battery device (10B) according to exemplary embodiments. Hereinafter, the battery device (10B) illustrated in FIG. 7 will be described with a focus on the differences from the battery device (10) described with reference to FIG. 1 to 4.

[0076] Referring to FIG. 7, in the battery device (10B), the pump (310) can be mounted on the base frame (110). For example, the pump (310) can be accommodated in the internal space of the housing (100B) and can be positioned between the first cell assembly (210 in FIG. 1) and the first side wall (121).

[0077] The base frame (110) may include a pump insertion channel (171) into which a portion of the pump (310) is inserted, a first base connection channel (111) connected to the pump insertion channel (171), and a second base connection channel (112) connected to the pump insertion channel (171). In exemplary embodiments, the impeller (311 in FIG. 1) of the pump (310) may be accommodated within the pump insertion channel (171) of the base frame (110) and may be configured to rotate within the pump insertion channel (171) of the base frame (110). The first base connection channel (111) may extend from the first connection channel (163) and the second connection channel (164), respectively, to the pump insertion channel (171). Cooling fluid discharged from the pump insertion channel (171) may be supplied to the first connection channel (163) and the second connection channel (164) through the first base connection channel (111). The second base connection channel (112) may be configured to deliver cooling fluid between the cooling fluid supply unit (410) and the pump insertion channel (171). The first base connection channel (111) and the second base connection channel (112) may form part of the cooling channel (160B) of the housing (100B). As illustrated in FIG. 7, the cooling fluid supplied from the cooling fluid supply unit (410) can be delivered to the pump insertion channel (171) through the second base connection channel (112), and the cooling fluid discharged from the pump (310) can be recovered to the cooling fluid supply unit (410) after flowing along a flow path in which the first base connection channel (111), the first connection channel (163), some of the base channels (161) of the plurality of base channels (161), and the third connection channel (165) are sequentially connected, or can be recovered to the cooling fluid supply unit (410) after flowing along a flow path in which the first base connection channel (111), the second connection channel (164), other of the base channels (161) of the plurality of base channels (161), and the third connection channel (165) are sequentially connected.

[0078]

[0079] The present invention has been described in more detail above through drawings and embodiments. However, the configurations described in the drawings or embodiments described in this specification are merely one embodiment of the present invention and do not represent all technical concepts of the present invention; therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

Claims

1. A housing comprising a pump insertion channel into which a cooling fluid flows and a cooling channel connected to the pump insertion channel; A pump configured such that a portion thereof is inserted into the pump insertion channel of the housing and to flow the cooling fluid within the pump insertion channel of the housing into the cooling channel of the housing; and A cell assembly including battery cells, housed within the above housing; A battery device including 2. In Paragraph 1, The above pump includes an impeller and a motor configured to rotate the impeller, and A battery device characterized in that the above impeller is accommodated within the pump insertion channel of the above housing.

3. In Paragraph 2, The above pump further includes a case that accommodates the motor, and A battery device characterized by the above case being fastened to the above housing.

4. In Paragraph 1, The above housing is, A base frame supporting the cell assembly; and A side frame extending along the perimeter of the base frame to surround the cell assembly and on which the pump is mounted; A battery device characterized by including 5. In Paragraph 4, The above side frame includes a first side wall having the pump insertion channel, a second side wall opposite to the first side wall in a first direction, and a third side wall extending from the first side wall to the second side wall. The above cooling channel is, A base channel extending in the first direction within the base frame; and A first side channel connected to the pump insertion channel and provided on the first side wall; A battery device characterized by including 6. In Paragraph 5, The above housing further includes a transfer pipe coupled to the edge portion of the base frame, and the transfer pipe includes a connecting channel extending between the first side channel of the first side wall and the base channel. A battery device characterized in that the first side channel of the first side wall, the connection channel of the transfer pipe, and the base channel of the base frame are sequentially connected.

7. In Paragraph 5, The second side wall includes a second side channel connected to the base channel of the base frame, and The third side wall includes a third side channel extended between the first side channel of the first side wall and the second side channel of the second side wall, and A battery device characterized in that the first side channel of the first side wall, the third side channel of the third side wall, the second side channel of the second side wall, and the base channel of the base frame are sequentially connected.

8. In Paragraph 5, The above pump includes an impeller, a motor configured to rotate the impeller, and a case housing the motor. The above impeller is accommodated within the pump insertion channel of the first side wall, and A battery device characterized by the above case being fastened to the above first side wall.

9. In Paragraph 8, The pump insertion channel extends in the first direction between the inner and outer surfaces of the first side wall and penetrates the first side wall, and The pump is coupled to the inner surface of the first side wall to cover the pump insertion channel, and A battery device characterized in that the above housing further includes a cover having a channel connected to the pump insertion channel and coupled to the outer surface of the first side wall to cover the pump insertion channel.

10. In Paragraph 1, The above housing is, A base frame that supports the cell assembly and on which the pump is mounted; and A side frame extending along the perimeter of the base frame to surround the cell assembly; A battery device characterized by including 11. In Paragraph 1, A battery device characterized in that the above pump is housed within the above housing.

12. In Paragraph 1, A battery device characterized by further including a BMS (BATTERY MANAGEMENT SYSTEM) configured to control the above-mentioned pump.

13. In Paragraph 1, A battery device characterized in that the above pump is an electric pump.

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