Battery module assembly
The battery module and circuit components are directly installed on the electric vehicle through the groupless structure, which solves the problem of excessive weight and volume of the battery module in the electric vehicle, and realizes the light, thin and compact battery module component design, simplifies the structure and improves the space utilization efficiency.
Patent Information
- Application Number
- CN202510107846.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-23
- Filing Date
- 2025-01-23
- Publication Date
- 2025-07-25
AI Technical Summary
In the prior art, when devices such as electric vehicles require multiple battery modules, there is a problem of excessive weight and volume, and the battery module and circuit components usually need to be separated and packaged, which increases the complexity of the structure.
Using a pack-less structure, multiple battery modules and circuit components are installed directly on the electric vehicle. Through the design of the recessed space, module mounting part, circuit mounting part and wiring guide, electrical connection and fixation are realized, independent packages are eliminated, and a light, thin and compact structure is formed.
The light, thin and compact design of the battery module assembly is realized, reducing weight and volume, while maintaining stable electrical connections, simplifying the structure and improving space utilization efficiency.
Smart Images
Figure CN120376889A_ABST
Abstract
Description
Technical Field
[0001] One or more embodiments relate to a battery module assembly. Background Art
[0002] Generally, unlike primary batteries that cannot be recharged, secondary batteries can be charged and discharged. Secondary batteries are used as energy sources for mobile devices, electric vehicles, hybrid vehicles, electric bicycles, uninterruptible power supplies, etc. Depending on the type of external device to which they are applied, secondary batteries are used in the form of a single battery or a group in which multiple battery cells are connected and combined into one unit.
[0003] Small mobile devices such as mobile phones can operate for a certain period of time based on the output and capacity of a single battery. For devices that require long-term driving and high-power operation and consume a large amount of power (such as electric vehicles, hybrid vehicles, etc.), due to output and capacity issues, a group-type secondary battery including multiple batteries is preferred. The output voltage or output current can increase as the number of built-in batteries increases. Summary of the Invention
[0004] One or more embodiments include a power supply device that has a reduced weight and volume and a light, thin, and compact structure by directly mounting a plurality of battery modules and circuit components electrically connected to the plurality of battery modules on an electric vehicle in a non-group manner without a separate package in which the plurality of battery modules and circuit components are separated from the electric vehicle.
[0005] Additional aspects will be set forth in part in the description which follows, will be apparent from the description, or may be learned by practice of the presented embodiments of the disclosure.
[0006] According to one or more embodiments, a battery module assembly includes a plurality of battery modules and a group space that houses the plurality of battery modules, wherein the group space includes: a recessed space having a bottom surface, a part of the bottom surface being locally recessed to accommodate at least a part of each of the plurality of battery modules; a module mounting portion in which the plurality of battery modules housed in the recessed space are arranged; a circuit mounting portion in which circuit components electrically connected to the plurality of battery modules are arranged; a barrier formed between the module mounting portion and the circuit mounting portion; and a wiring guide connecting the module mounting portion to the circuit mounting portion.
[0007] The battery module assembly may further include a foldable cover that opens and closes the group space, wherein the foldable cover covers a top surface of the group space that is opposite to the bottom surface of the group space.
[0008] Each of the plurality of battery modules can be position-fixed in the recessed space by a joining device, which joins via a flange member formed in each of the plurality of battery modules to a fixing member mounted on the bottom surface of the recessed space, or joins via a pressing member that presses together a plurality of adjacent battery modules to a fixing member mounted on the bottom surface of the recessed space.
[0009] The circuit mounting portion may include: a battery management system (BMS) configured to control charging and discharging operations of the plurality of battery modules; and a power relay assembly (PRA) configured to control power flow from the plurality of battery modules to a drive motor.
[0010] The module mounting portion may include a cooling fan for cooling the plurality of battery modules.
[0011] The cooling fan and the power relay assembly of the circuit mounting portion may be electrically connected to each other by wirings guided along a wiring guide extending across the barrier member.
[0012] The wiring guide may be formed in a groove shape recessed from the bottom surface of the group space along the edge of the group space to surround the module mounting portion, the circuit mounting portion, and the barrier member between the module mounting portion and the circuit mounting portion around the recessed space, and the wiring guide may be formed in an annular shape having opposite ends disconnected from each other, and the mounting positions of the PRA and the cooling fan are located between the ends of the annular shape along the edge of the group space.
[0013] Fixing members for fixing the PRA and the cooling fan may be formed at the opposite ends of the wiring guide that are disconnected from each other, and each of the PRA and the cooling fan may be fixed to the group space by a joining member inserted into the fixing member.
[0014] A power port providing input and output positions of charging and discharging power of the battery module and a communication port connected to the BMS to enable data communication with the BMS may be formed on the outer side of the line guide.
[0015] The group space may be formed as a space below the loading space, and a transfer load is loaded on the loading space.
[0016] The group space and the loading space may be integrally formed using a single base frame.
[0017] A foldable cover may be arranged on the base frame and may be extendable between the group space and the loading space.
[0018] The group space and the loading space may be separated from or connected to each other by opening and closing the foldable cover.
[0019] The base frame may include: a sliding guide extending between the group space and the loading space to support the sliding of the foldable cover; and an upper wall and a lower wall, each branching upward and downward from the sliding guide and partitioning a part of the loading space and a part of the group space, respectively.
[0020] The base frame may be assembled to the vehicle body of an electric vehicle, and a plurality of battery modules are configured to provide a driving power source for the electric vehicle.
[0021] At least a part of the wall partitioning the group space may be provided by the vehicle body of the electric vehicle.
[0022] The bottom surface of the group space may be provided by the vehicle body of the electric vehicle.
[0023] The plurality of battery modules may be arranged in a compact arrangement relative to each other to be at least partially received in the recessed space, and may not include a binding mechanism for physically bundling the plurality of battery modules to each other.
[0024] The battery module assembly is provided together with the electric vehicle, and the plurality of battery modules are configured to provide a driving power source for the electric vehicle, and may not include a housing for forming the plurality of battery modules and the circuit components electrically connected to the plurality of battery modules into a single package separated from the electric vehicle using the plurality of battery modules as a driving power source. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The above and other aspects, features, and advantages of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the drawings.
[0026] Figure 1 is a view for describing the structure of a battery module assembly according to an embodiment of the present disclosure, the structure including a plurality of battery modules as a driving power source for an electric vehicle and a group space for accommodating the plurality of battery modules; Figure 2A and Figure 2B is a top view of the group space to show components defining the group space that is opened and closed by folding and unfolding a foldable cover; Figure 3A and Figure 3B is a side view of the group space to show components defining the group space that is opened and closed by folding and unfolding a foldable cover; Figure 4 is Figure 2A 、 Figure 2B 、 Figure 3A and Figure 3B a perspective view of the base frame shown in Figure 5 is for describing Figure 1 the structure of the group space shown in Figure 6It is a view for describing the layout structure of a battery module assembly arranged in an electric vehicle; Figure 7 Schematically shows the connection of power lines and communication lines between the battery module assembly and the vehicle controller; and Figure 8 Shows a power relay assembly for disconnecting and closing the power flow between multiple battery modules and the drive motor. Detailed implementation
[0027] Now, embodiments will be described in detail with reference to the examples shown in the drawings, where the same reference numerals always refer to the same elements. In this regard, the presented embodiments may have different forms and should not be construed as limited to the descriptions set forth herein. Therefore, the embodiments are described below only by referring to the drawings to explain aspects of this description. As used herein, the term "and / or" includes any combination and all combinations of one or more of the related listed items. Expressions such as "at least one (kind / one) of..." modify the entire list of elements if they are after a list of elements, rather than modifying individual elements of the list.
[0028] Hereinafter, a battery module assembly according to an embodiment of the present disclosure will be described with reference to the drawings attached to the specification.
[0029] Figure 1 It is a view for describing the structure of a battery module assembly MP according to an embodiment of the present disclosure, the structure including multiple battery modules M as the drive power source of an electric vehicle and a group space P for accommodating the multiple battery modules M.
[0030] Figure 2A and Figure 2B Is a top view of the group space P to show the components that define the group space P opened and closed by folding and unfolding the foldable cover CV.
[0031] Figure 3A and Figure 3B Is a side view of the group space P to show the components that define the group space P opened and closed by folding and unfolding the foldable cover CV.
[0032] Figure 4 Is Figure 2A 、 Figure 2B 、 Figure 3A and Figure 3B A perspective view of the base frame 300 shown in
[0033] Figure 5 Is for describing Figure 1 The structure of the group space P shown in
[0034] Figure 6It is a view for describing the layout structure of the battery module assembly MP arranged in an electric vehicle.
[0035] Figure 7 Schematically shows the connection of the power line and communication line between the battery module assembly MP and the vehicle controller ECU.
[0036] Figure 8 Shows a power relay assembly for disconnecting and closing the power flow between a plurality of battery modules M and the drive motor.
[0037] Referring to the drawings, the battery module assembly MP according to an embodiment of the present disclosure may include a plurality of battery modules M and a group space P for accommodating the plurality of battery modules M. The group space P may include a recessed space 100' having a bottom surface, and a part of the bottom surface is locally recessed to accommodate at least a part of each of the plurality of battery modules M. The group space P may further include a module mounting portion 100 and a circuit mounting portion 200. The plurality of battery modules M accommodated in the recessed space 100' are arranged on the module mounting portion 100, and the circuit components electrically connected to the battery modules M are arranged on the circuit mounting portion 200. A barrier 150 may be formed between the module mounting portion 100 and the circuit mounting portion 200, and a wiring guide WG may cross the barrier 150 to connect the module mounting portion 100 to the circuit mounting portion 200.
[0038] In an embodiment of the present disclosure, the battery module assembly MP may include a plurality of battery modules M electrically connected to each other and a group space P for accommodating the plurality of battery modules M. In an embodiment of the present disclosure, the group space P may be formed by a plurality of walls surrounding the group space P, and the bottom surface of the group space P may be divided by a wall provided by the body of an electric vehicle using the plurality of battery modules M as a driving power source. That is, in an embodiment of the present disclosure, at least some of the walls dividing the group space P may be provided by the body of the electric vehicle. For example, in an embodiment of the present disclosure, the bottom surface of the group space P may be provided by the body of an electric vehicle using the plurality of battery modules M accommodated in the group space P as a driving power source, and the top surface of the group space P may be provided by a base frame 300 assembled on the body of the electric vehicle, rather than directly by the body of the electric vehicle using the plurality of battery modules M accommodated in the group space P as a driving power source. Thus, in an embodiment of the present disclosure, the group space P for accommodating the plurality of battery modules M may be provided with its bottom surface and its top surface, the bottom surface of which comes from the body of the electric vehicle using the plurality of battery modules M as a driving power source, and the top surface of which comes from the base frame 300 assembled on the body of the electric vehicle using the plurality of battery modules M as a driving power source.
[0039] In an embodiment of the present disclosure, a group space P accommodating a plurality of battery modules M may be provided as a lower space of a loading space T on which a transfer load is loaded. The group space P and the loading space T may be partitioned by a sliding guide W3 extending between the group space P and the loading space T of the base frame 300, and may be partitioned by a foldable cover CV slidably supported on the sliding guide W3. The foldable cover CV may include a cover roller (not shown) moving on the sliding guide W3 so as to be foldably supported on the sliding guide W3 by rotation of the cover roller (not shown). The foldable cover CV may include a plurality of cover segments connected by hinges to fold and unfold relative to each other. Since the plurality of cover segments connected by hinges may be stacked on each other or may be unfolded relative to each other, they close or open the group space P by folding and unfolding.
[0040] In an embodiment of the present disclosure, a loading space T on which a transfer load is loaded and a group space P accommodating a plurality of battery modules M may be spatially separated or connected to each other by a foldable cover CV stretched and compressed along a sliding guide W3 of the base frame 300, and the foldable cover CV closes the group space P to separate it from the loading space T or opens the group space P toward the loading space T. In an embodiment of the present disclosure, the foldable cover CV or the sliding guide W3 (base frame 300) for guiding the sliding of the foldable cover CV may separate the vertically stacked loading space T and the group space P from each other. That is, the foldable cover CV and the sliding guide W3 (base frame 300) for guiding the sliding of the foldable cover CV may be provided above the top surface of the group space P. The bottom surface of the group space P may be provided by a body of an electric vehicle on which the base frame 300 is assembled.
[0041] In an embodiment of the present disclosure, the base frame 300 may include a collapsible cover CV extending across the loading space T and the group space P or a sliding guide W3 for guiding the sliding of the collapsible cover CV. The base frame 300 may include an upper wall W1 and a lower wall W2, which branch and extend from the sliding guide W3 toward the loading space T at the upper position and the group space P at the lower position. The base frame 300 according to an embodiment of the present disclosure may be assembled on the body of an electric vehicle using a plurality of battery modules M as a driving power source. The upper wall W1 may extend from the collapsible cover CV extending above the top surface of the group space P or the sliding guide W3 for guiding the sliding of the collapsible cover CV to the upper position of the loading space T. The lower wall W2 extends from the collapsible cover CV or the sliding guide W3 for guiding the sliding of the collapsible cover CV to the lower position of the group space P. In this case, the upper wall W1 and the lower wall W2 may respectively delimit at least a part of the loading space T and the group space P. The upper wall W1 and the lower wall W2 may respectively define the front portions of the loading space T and the group space P. When the upper wall W1 and the lower wall W2 define the front portions of the loading space T and the group space P, it may mean that the upper wall W1 and the lower wall W2 define the front portions of the loading space T and the group space P in the moving direction of the electric vehicle. In an embodiment of the present disclosure, the front portion of the group space P may be covered by the lower wall W2, the top surface of the group space P may be covered by the collapsible cover CV or the sliding guide W3 for guiding the sliding of the collapsible cover CV, and the bottom surface of the group space P may be provided on the body of an electric vehicle using a plurality of battery modules M as a driving power source.
[0042] In an embodiment of the present disclosure, the front positions of the loading space T and the group space P may mean that the central position may be the center of the opening / closing operation of the collapsible cover CV provided between the loading space T and the group space P. The central position of the operation of the collapsible cover CV may refer to the position where a plurality of cover segments fold with each other while pivoting around a hinge during the opening operation of folding the collapsible cover CV. The collapsible cover CV may close the top of the group space P by unfolding from the central position. By using the collapsible cover CV covering the top of the group space P and forming the bottom of the loading space T as a support base, a transfer load may be loaded on the loading space T. In an embodiment of the present disclosure, the loading space T and the group space P may be formed such that the rear portions of the loading space T and the group space P are open. Accordingly, the loading space T and the group space P may accommodate a transfer load or battery modules M and peripheral components connected to the battery modules M through the open rear portions.
[0043] In an embodiment of the present disclosure, the group space P may include a recessed space 100' having a bottom, a part of which is locally recessed to accommodate at least a part of each of the plurality of battery modules M. Each of the plurality of battery modules M may be arranged densely (i.e., compactly) relative to each other, and at least a part of the battery modules is accommodated in the recessed space 100'. Considering the arrangement, a bundling mechanism (e.g., end plates or side plates) may not be used to bundle the plurality of battery modules M to each other. For example, the battery module assembly MP may include a plurality of battery modules M arranged closely, where they are arranged densely relative to each other without including physical bundling relative to each other. In an embodiment of the present disclosure, even when the plurality of battery modules M are not bundled to each other using a separate bundling mechanism (the battery modules M are not physically bundled to each other), the plurality of battery modules M forming the battery module assembly MP may still be arranged densely relative to each other, thereby stably maintaining an uninterrupted electrical connection between the battery modules M. In addition, the electrical connection between different battery modules M may not be subjected to stresses such as stretching or compression due to position changes of the different battery modules M connected to each other. In an embodiment of the present disclosure, the dense arrangement of the plurality of battery modules M may include other components capable of providing a binding force (bundling force) to the plurality of battery modules M so as not to leave a restricted area or restricted zone. And in an embodiment of the present disclosure, the plurality of battery modules M may be arranged densely relative to each other while at least a part of the battery modules M is accommodated in the recessed space 100', and the recessed space 100' is recessed in the bottom surface forming the group space P.
[0044] In an embodiment of the present disclosure, the plurality of battery modules M accommodated in the group space P and a series of components (corresponding to a battery pack) including circuit components connected to the plurality of battery modules M may be formed in a pack-less structure and may not include a housing that divides the battery pack and peripheral components. For example, the battery module assembly MP according to an embodiment of the present disclosure may not include a housing for forming the plurality of battery modules M and the circuit components electrically connected to the plurality of battery modules M into a single package separated from an electric vehicle using the plurality of battery modules M as a driving power source. In other words, in an embodiment of the present disclosure, the battery pack may be accommodated in the group space P, but may not include a housing for dividing the plurality of battery modules M and the circuit components (corresponding to the battery pack) connected to the plurality of battery modules M.
[0045] In an embodiment of the present disclosure, the group space P may be integrally formed with the electric vehicle so as not to be separated from the electric vehicle, and the bottom surface of the group space P may be provided by the body of the electric vehicle. The group space P may be formed below a loading space T on which a transfer load is loaded. In an embodiment of the present disclosure, the group space P may be formed as a part of the electric vehicle, and more specifically, the group space P may be a component of the electric vehicle rather than a component of the battery pack. For example, asFigure 7 As shown in Figure 7 , the bottom surface of the group space P can be provided by the bottom frame BF of the frame that forms the bottom of the electric vehicle. In other words, the bottom surface of the group space P can be provided by the bottom frame BF of a component that forms part of the electric vehicle rather than the battery pack.
[0046] In an embodiment of the present disclosure, when the battery pack is formed in a non-group form, this may mean that the battery pack may not include components for accommodating or bundling a plurality of battery modules M, and the battery pack may be accommodated inside the group space P to allow the boundary between the battery pack and its surrounding environment to be identified.
[0047] Referring to Figure 5 , in an embodiment of the present disclosure, the group space P may include a recessed space 100' having a bottom surface, a part of which is locally recessed to accommodate at least a part of each of the plurality of battery modules. The group space P may further include a module mounting portion 100 and a circuit mounting portion 200. The plurality of battery modules M accommodated in the recessed space 100' are disposed on the module mounting portion 100, and circuit components electrically connected to the battery modules M are disposed on the circuit mounting portion 200. In an embodiment of the present disclosure, the barrier 150 may be formed to extend between the module mounting portion 100 and the circuit mounting portion 200.
[0048] The group space P may include a module mounting portion 100 on which a plurality of battery modules M are mounted and a circuit mounting portion 200 on which circuit components and a power relay assembly (PRA) are mounted. The circuit components are such as a battery system monitor (BSM) or a battery management system (BMS) (hereinafter collectively referred to as the battery management system BM) for controlling the charging / discharging operations of the plurality of battery modules M, and the power relay assembly (PRA) is for opening / closing the charging / discharging path between the plurality of battery modules M and the drive motor Motor (or an inverter 30 connected to the drive motor, see Figure 8 ). Here, the BSM or BMS may have substantially the same meaning, and as a controller for controlling the overall operations of the plurality of battery modules M, it may be collectively referred to as the battery management system BM. The overall operations include operations of measuring state variables (such as temperature, current, and voltage) of the plurality of battery modules M and the charging / discharging operations of the plurality of battery modules M.
[0049] Referring to Figure 5, in an embodiment of the present disclosure, the barrier member 150 for separating different spaces may be disposed between the module mounting portion 100 and the circuit mounting portion 200. In the module mounting portion 100, the recessed space 100' may be formed to accommodate at least a part of each battery module M, such that a plurality of battery modules M may be densely arranged. The wiring guide WG may be formed along the edge of the group space P. The wiring guide WG may guide the wiring that electrically connects the module mounting portion 100 to the circuit mounting portion 200. The wiring guide WG may extend along the edge of the group space P across the barrier member 150 that separates the module mounting portion 100 and the circuit mounting portion 200 from each other to electrically connect the components of the module mounting portion 100 and the components of the circuit mounting portion 200. For example, in an embodiment of the present disclosure, the wiring guide WG may integrally surround the group space P and pass through the end of the barrier member 150. On the outer side of the wiring guide WG, a power port PP and a communication port CP may be formed. The power port PP is electrically connected to a plurality of battery modules M to provide an input / output position for the charging / discharging current of the plurality of battery modules M. The communication port CP is connected to communicate with the BM for controlling the operation of the plurality of battery modules M. The power relay assembly PRA, the battery management system BM, and the cooling fan FN may be formed at one side position and the other side position with respect to the module mounting portion 100.
[0050] In an embodiment of the present disclosure, the circuit mounting portion 200 may include a battery management system BM and a power relay assembly PRA. The battery management system BM is used to monitor state variables (such as temperature, current, and voltage) and charging / discharging operations of a plurality of battery modules M. The power relay assembly PRA is used to turn on / off and control the power flow between the battery modules M and the drive motor. In an embodiment of the present disclosure, the module mounting portion 100 may include a cooling fan FN for cooling a plurality of battery modules M. The cooling fan FN of the module mounting portion 100 and the power relay assembly PRA of the circuit mounting portion 200 may be electrically connected to each other through the wiring guided along the wiring guide WG. The wiring guide WG extends across the barrier member 150 disposed between the module mounting portion 100 and the circuit mounting portion 200 between the module mounting portion 100 and the circuit mounting portion 200. The power relay assembly PRA may include a relay that is turned on / off to control the power flow between a plurality of battery modules M between the plurality of battery modules M and the drive motor (the inverter 30 connected to the drive motor, see Figure 8 ) Figure 8 . As shown in
[0051] Referring to Figure 5, in an embodiment of the present disclosure, the wiring guide WG may be formed in a groove shape recessed from the bottom surface of the group space P along the edge of the group space P so as to surround the module mounting portion 100, the circuit mounting portion 200, and the barrier 150 between the module mounting portion 100 and the circuit mounting portion 200 around the recessed space 100'. The wiring guide WG may have an annular shape along the edge of the group space P, and the annular shape has opposite ends that are disconnected from each other.
[0052] Further referring to Figure 5 , in an embodiment of the present disclosure, a plurality of fixing members F1 for fixing the positions of the plurality of battery modules M may be formed in the recessed space 100' in which the plurality of battery modules M are accommodated in a dense arrangement. The wiring guide WG may be formed in the edge of the module mounting portion 100 surrounding the recessed space 100', and the fixing member F1 for fixing the position of the cooling fan FN may be formed at a position corresponding to the mounting position of the cooling fan FN at opposite ends of the wiring guide WG, wherein the cooling fan FN may be fixed to the group space P by an engagement member inserted into the fixing member F1. In the circuit mounting portion 200, the fixing member F1 for fixing the position of the power relay assembly PRA may be formed at positions opposite to and disconnected from each other corresponding to the mounting position of the power relay assembly PRA of the wiring guide WG, wherein the power relay assembly PRA may be fixed to the group space P by an engagement member inserted into the fixing member F1. Similarly, the fixing member F1 for fixing the position of the battery management system BM may be formed at positions opposite to and disconnected from each other corresponding to the mounting position of the battery management system BM of the wiring guide WG.
[0053] Referring to Figure 5, according to an embodiment of the present disclosure, a battery module assembly MP may include a plurality of battery modules M and a group space P for accommodating the plurality of battery modules M. The group space P may provide a fixing member F1 for firmly fixing each of the plurality of battery modules M and a circuit component connected to the plurality of battery modules M. The fixing member F1 may include a threaded engagement portion mounted on the bottom surface of the group space P. In an embodiment of the present disclosure, each component forming the battery pack (such as each battery module M, a cooling fan FN, a power relay assembly PRA, a battery management system BM, etc.) may be position-fixed on the group space P by the engagement of a flange member included in each component with the fixing member F1 mounted on the bottom surface of the group space P through an engagement device. For example, in an embodiment of the present disclosure, each battery module M may be position-fixed on the bottom surface of the recessed space 100' by inserting into an engagement device of the fixing member F1 mounted on the bottom surface of the recessed space 100' via a flange member formed in each battery module M, and a plurality of adjacent battery modules M may be firmly position-fixed against the bottom surface of the recessed space 100' by an engagement device that engages a pressing member F2 pressing the plurality of adjacent battery modules M together with the fixing member F1 mounted on the bottom surface of the recessed space 100'. In various embodiments of the present disclosure, the plurality of battery modules M may be position-fixed on the recessed space 100' by at least one of an engagement device that engages the flange members of the plurality of battery modules M with the fixing member F1 mounted on the bottom surface of the recessed space 100' and an engagement device that engages a pressing member F2 pressing the adjacent battery modules M together with the fixing member F1 mounted on the bottom surface of the recessed space 100'.
[0054] Still referring to Figure 5 , the group space P may include a module mounting portion 100 on which a plurality of battery modules M are mounted and a circuit mounting portion 200 having circuit components such as a battery management system BM for controlling the charging / discharging operations of the plurality of battery modules M and a power relay assembly PRA for disconnecting and closing the charging / discharging path between the plurality of battery modules M and a drive motor. A barrier member 150 may be formed to extend across the space between the module mounting portion 100 and the circuit mounting portion 200. In the module mounting portion 100, a recessed space 100' may be formed to accommodate at least a part of each battery module M such that the plurality of battery modules M may be densely (compactly) arranged. A wiring guide WG may be formed along the edge of the group space P. The wiring guide WG may guide the wiring that electrically connects the module mounting portion 100 to the circuit mounting portion 200. The wiring guide WG may extend along the edge of the group space P across the barrier member 150 separating the module mounting portion 100 and the circuit mounting portion 200 from each other to electrically connect the components of the module mounting portion 100 and the components of the circuit mounting portion 200.
[0055] In an embodiment of the present disclosure, the group space P and the loading space T may be provided by a base frame 300. For example, the group space P and the loading space T may be provided together by a base frame 300 including a collapsible cover CV disposed between the group space P and the loading space T, and an upper wall W1 and a lower wall W2 extend upward and downward from the collapsible cover CV to partition portions of the loading space T and the group space P. The group space P and the loading space T may be separated from or connected to each other by opening / closing the collapsible cover CV.
[0056] Referring to Figure 6 , in an embodiment of the present disclosure, with respect to the total depth D of the group space P, a relative depth d of the recessed space 100' may be provided for bundling (combining) a plurality of battery modules M in a compact arrangement in which the plurality of battery modules M are closely arranged with each other, and the space of the depth d accommodates at least a part of each of the plurality of battery modules M. The depth d may be set to about 20% to about 25% of the total depth D.
[0057] Referring to Figure 7 , in an embodiment of the present disclosure, a battery module assembly MP including a group space P that houses a plurality of battery modules M may be disposed at the rear portion of an electric vehicle. Driving power may be supplied from the battery module assembly MP disposed at the rear portion of the electric vehicle toward a vehicle controller ECU disposed at the front portion of the electric vehicle through a power line and a communication line. Abnormal conditions of the plurality of battery modules M may be detected to control charging / discharging operations of the plurality of battery modules M or to take protective measures for the plurality of battery modules M.
[0058] Although the present disclosure has been described with reference to the examples shown in the drawings, those of ordinary skill in the art will understand that various modifications and equivalent other examples can be made from the shown examples.
[0059] One or more embodiments include a power supply device that has a reduced weight and volume and has a light, thin, and compact structure by directly mounting a plurality of battery modules and circuit components electrically connected thereto on an electric vehicle in a non-packaged manner without a separate package that separates the plurality of battery modules and the circuit components from the electric vehicle.
[0060] It should be understood that the embodiments described herein should be considered only in a descriptive sense and not for purposes of limitation. The description of features or aspects within each embodiment should generally be considered available for other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the drawings, those of ordinary skill in the art will understand that various changes in form and detail can be made therein without departing from the spirit and scope of the present disclosure.
Claims
1. A battery module assembly, the battery module assembly comprising: A plurality of battery modules; And A group space for accommodating the plurality of battery modules, Wherein, the group space includes: A recessed space having a bottom surface, a part of the bottom surface being recessed to accommodate at least a part of each of the plurality of battery modules; A module mounting portion in which the plurality of battery modules accommodated in the recessed space are arranged; A circuit mounting portion in which circuit components electrically connected to the plurality of battery modules are arranged; A barrier formed between the module mounting portion and the circuit mounting portion; and A wiring guide connecting the module mounting portion to the circuit mounting portion.
2. The battery module assembly according to claim 1, the battery module assembly further comprising a foldable cover for opening and closing the group space, Among them, The foldable cover covering a top surface of the group space opposite to the bottom surface of the group space.
3. The battery module assembly according to claim 1, wherein, Each of the plurality of battery modules is position-fixed in the recessed space by a joining device, the joining device: Engaging via a flange member formed in each of the plurality of battery modules with a fixing member mounted on the bottom surface of the recessed space; Or Engaging via a pressing member pressing adjacent battery modules against a fixing member mounted on the bottom surface of the recessed space.
4. The battery module assembly according to claim 1, wherein, The circuit mounting portion includes: A battery management system configured to control charging and discharging operations of the plurality of battery modules; and A power relay assembly configured to control power flow from the plurality of battery modules to a drive motor.
5. The battery module assembly according to claim 4, wherein, The module mounting portion includes a cooling fan for cooling the plurality of battery modules.
6. The battery module assembly according to claim 5, wherein, The cooling fan and the power relay assembly of the circuit mounting portion are electrically connected to each other by a wiring guided along the wiring guide.
7. The battery module assembly according to claim 5, wherein, The wiring guide is formed in a groove shape recessed from the bottom surface of the group space along an edge of the group space to surround the module mounting portion, the circuit mounting portion, and the barrier between the module mounting portion and the circuit mounting portion around the recessed space, and Wherein, the wiring guide is formed in an annular shape having opposite ends disconnected from each other, and the mounting positions of the power relay assembly and the cooling fan are located between the ends of the annular shape along the edge of the group space.
8. The battery module assembly according to claim 7, wherein, Fixing members for fixing the power relay assembly and the cooling fan are formed at the opposite ends of the wiring guide that are disconnected from each other, and Wherein, each of the power relay assembly and the cooling fan is fixed to the group space by an engaging member inserted into the fixing member.
9. The battery module assembly according to claim 4, wherein, A power port and a communication port are formed on an outer side of the wiring guide, the power port providing an input and output position for charging and discharging power of the battery module, and the communication port being connected to the battery management system to enable data communication with the battery management system.
10. The battery module assembly according to claim 1, wherein, The group space is formed as a space below a loading space, and a transfer load is loaded on the loading space.
11. The battery module assembly according to claim 10, wherein, The group space and the loading space are integrally formed using a base frame.
12. The battery module assembly according to claim 11, wherein, The collapsible cover is disposed on the base frame and is extendable between the group space and the loading space.
13. The battery module assembly according to claim 12, wherein, The group space and the loading space are separated from or connected to each other by opening and closing of the collapsible cover.
14. The battery module assembly according to claim 12, wherein, The base frame includes: a sliding guide extending between the group space and the loading space to support the sliding of the collapsible cover; and an upper wall and a lower wall, each branching upward and downward from the sliding guide and respectively partitioning a part of the loading space and a part of the group space.
15. The battery module assembly according to claim 11, wherein, The base frame is assembled on the body of an electric vehicle, and the plurality of battery modules are configured to provide a driving power source for the electric vehicle.
16. The battery module assembly according to claim 1, wherein, At least a part of the wall partitioning the group space is provided by the body of the electric vehicle.
17. The battery module assembly according to claim 16, wherein, The bottom surface of the group space is provided by the body of the electric vehicle.
18. The battery module assembly according to claim 1, wherein, The plurality of battery modules are arranged in a compact arrangement relative to each other and are at least partially received in the recessed space, and wherein, a bundling mechanism for physically bundling the plurality of battery modules to each other is not included.
19. The battery module assembly according to claim 1, wherein, The battery module assembly is provided together with the electric vehicle, and the plurality of battery modules are configured to provide a driving power source for the electric vehicle, and wherein, a housing for accommodating the plurality of battery modules and the circuit assembly electrically connected to the plurality of battery modules in a single package separated from the electric vehicle is not included.