Mobile power supply with sensor elements and method for mounting the same

Abstract

The invention relates to a mobile energy supply device (1) having a holding frame (10) for arranging at least one battery cell (30) in an assembly direction (M), wherein the holding frame (10) comprises at least one assembly structure (100) for a sensor element (20) for detecting at least one operating state of the at least one battery cell (30), wherein the at least one assembly structure (100) comprises a contact section (110) which is configured to adjustably, at least partially, change a shape of the sensor element (20) in an assembled state and to arrange the at least partially shape-changed sensor element (20) in a defined position relative to the at least one battery cell (30) in order to be able to detect the at least one operating state of the at least one battery cell (30). The invention also relates to a method for assembling a sensor element (20) to a mobile energy supply device (1).

Description

Technical Field

[0001] This invention relates to the field of power supply technology, and more particularly to a mobile power supply device having at least one sensor element. The invention also relates to a method for assembling at least one sensor element into the mobile power supply device. Background Technology

[0002] Mobile power supply devices having at least one battery cell or multiple battery cells (also referred to as "batteries") must meet several requirements and be configured according to their application area and purpose of use.

[0003] For example, mobile power supply devices need to monitor temperature during charging. Temperature monitoring is typically achieved through a so-called battery management system combined with at least one temperature sensor. The temperature sensor and the battery management system, along with the corresponding electrical / electronic components and assemblies, are usually mounted on the power supply device's circuit board (printed circuit board).

[0004] In mobile power supply devices, so-called NTC sensors ("NTC" is an abbreviation for "negative temperature coefficient") are often used to measure temperature. An NTC sensor is a semiconductor device whose resistance changes with temperature. A typical NTC sensor is characterized by a sensor head and two electrical conductors, which are usually made of single wires and are used to connect the sensor and fix it to a circuit board.

[0005] Here, an NTC sensor is inserted into a recess in the battery holder, which is filled with thermal paste. The recess is positioned corresponding to the battery cell at the battery holder and also includes an opening. The thermal paste can penetrate through the opening and come into contact with the battery cell. Heat generated in the battery cell is transferred to the thermal paste. The temperature within the thermal paste can be determined using the NTC sensor.

[0006] In this known arrangement, the location of the NTC sensor, i.e., the sensor head, is typically not precisely defined. Due to the structure, accurate, and especially sufficiently accurate, temperature measurement cannot be guaranteed. For example, the sensor head may be positioned at varying distances from the battery cell within the thermal paste. This can particularly lead to inaccurate and / or delayed temperature measurements. Summary of the Invention

[0007] One object of the present invention is to provide a mobile power supply device having a sensor element, which enables improved, and particularly more accurate, detection of at least one operating state of at least one battery cell. Furthermore, another object of the present invention is to provide a method for assembling a sensor element into a mobile power supply device.

[0008] This objective is achieved by the features of independent claims 1 and 10. Other embodiments and applications of the invention will be derived from the dependent claims and are described in more detail below, in part, with reference to the accompanying drawings.

[0009] According to a first general viewpoint of the invention, the present invention relates to a mobile power supply device having a retaining frame for arranging at least one battery cell substantially in an assembly direction, wherein the retaining frame includes at least one assembly structure for a sensor element for detecting at least one operating state of at least one battery cell, wherein the at least one assembly structure includes a contact segment configured to adjustably, at least partially, change the shape of the sensor element in the assembled state, particularly partially along the longitudinal direction of the sensor element, and to arrange the at least partially shaped sensor element at a defined position relative to at least one battery cell so as to enable (directly, immediately) detection of at least one operating state of at least one battery cell.

[0010] The present invention provides a mobile power supply device characterized by a more precise arrangement of sensor elements, particularly the sensor heads of the sensor elements, relative to at least one battery cell (also referred to as "battery"). This ensures improved (more accurate) detection of at least one operating state of at least one battery cell. For simplicity, the term "mobile" related to the power supply device will be omitted below.

[0011] This invention, for example, can substantially compensate for manufacturing tolerances and / or assembly tolerances of sensor elements. In other words, this invention ensures that manufacturing tolerances and / or assembly tolerances play a minor or negligible role. Through the contact section of the assembly structure of the power supply device's retaining frame, the shape of the sensor element can be at least partially and adjustably changed in the assembled state, thereby ensuring that the sensor element is arranged in a defined position relative to at least one battery cell.

[0012] The defined location may include the position and / or orientation of the sensor element, particularly the sensor head of the sensor element, in which the sensor element immediately (directly) contacts at least one battery cell or is arranged at a defined distance from at least one battery cell. This allows for more precise detection of at least one operating state of at least one battery cell, such as temperature.

[0013] By configuring at least one contact segment of the assembly structure, the sensor element can be positioned in a defined location in the assembled state without the need for other components. In particular, no additional components or devices are required to position and / or orient the sensor element during the assembly process.

[0014] Contact segments can be arranged and / or constructed at the assembly structure to at least partially deform the sensor element during assembly, for example, through substantially reversible or irreversible deformation. Contact segments can be configured as, for example, bevels, ribs, grooves, and / or channels. The sensor element is adjustablely and at least partially changed in shape in the assembled state, thereby changing its shape. In other words, the contact segments are configured to partially deform the sensor element in the assembled state. The contact segments are deformation segments for the sensor element. Additionally or alternatively, the contact segments can be configured as orientation segments for orienting the sensor element, particularly at least one segment of the sensor element. The contact segments can be configured as substantially plate-like. Additionally or alternatively, the contact segments can be arranged and / or constructed substantially obliquely relative to the assembly direction.

[0015] At least one operating state specifically includes temperature and / or temperature change. The sensor element can, for example, be configured and / or designed for detecting temperature. The sensor element may include a sensor head having a sensor chip. The sensor element may include two sensor holders in the form of wires, serving as connecting lines and / or assembly lines. The two wires, in the manufacturing state of the sensor element, may be arranged substantially parallel to each other and / or spaced apart from each other and / or connected to the sensor head. Furthermore, the sensor holders may be configured to carry the sensor head of the sensor element. The sensor holders may be partially covered by an insulating material. Temperature detection can be performed directly (immediately) at at least one battery cell at a defined location on the sensor element.

[0016] The sensor element can be configured, in particular, as a so-called NTC sensor ("NTC" is an abbreviation for "negative temperature coefficient"), to detect temperature by measuring the change in resistance of the NTC sensor. The sensor element can be configured as an NTC sensor known in the prior art.

[0017] Power supply devices are particularly portable, handheld, tool-free, manually assembled / disassembled, replaceable, and / or rechargeable power supply devices. In other words, power supply devices can be configured as so-called battery packs. Power supply devices can, for example, include a single battery cell or multiple battery cells. The single or multiple battery cells can be configured based on lithium-ion storage technology. Power supply devices can be configured to supply power to electrical equipment, particularly handheld power tools.

[0018] The assembly state, particularly the manufacturing state of the power supply device, in which the sensor element is arranged in a defined position relative to at least one battery cell, and is characterized by a shape that is at least partially changed at the defined position.

[0019] It is feasible that, in the assembled state, the sensor element is mechanically fixed and / or electrically contacted by means of a carrier material structure for at least one unit of the power supply device, particularly for an electronic processing unit for processing at least one detected operating state of at least one battery cell, or by means of a housing segment of the housing of the power supply device, wherein the carrier material structure or housing segment is connected to the retaining frame by an assembly process in the assembly direction, wherein, in the assembled state, the sensor element, particularly at least one sensor head of the sensor element, is housed in the assembly structure, wherein the assembly structure is arranged opposite to the carrier material structure or housing segment in the assembly direction.

[0020] The carrier material structure can be configured as a circuit carrier. The carrier material structure can be configured as a circuit board (printed circuit board). In particular, the carrier material structure can be configured as a plate and / or flat.

[0021] The electronic processing unit can be specifically configured to evaluate at least one detected operating state. The electronic processing unit for processing the at least one detected operating state can be a component of the battery management system of the power supply device. The electronic processing unit can be arranged on a carrier material structure and connected to the sensor element.

[0022] The sensor element can be fixed to the carrier material structure or the housing section. The sensor retainer of the sensor element (e.g., in the form of an electrical wire) can be fixed to the carrier material structure as a connecting wire and / or assembly line. Fixing can be achieved, for example, by means of at least one of the following connections: substantially form-fitting connections (e.g., plug connections or latching connections), substantially force-fitting connections (e.g., crimp connections), and / or substantially material-fitting connections (e.g., welded connections or brazed connections).

[0023] According to another aspect of the invention, the sensor element may be defined as including two sensor holders that extend substantially along the longitudinal direction of the sensor element from the sensor head and are arranged opposite and / or spaced apart from each other. In particular, in order to maintain (hold or retain) the distance between the two sensor holders, a distance holding element may be arranged between the two sensor holders. This distance holding element is movably supported substantially along the longitudinal direction of the sensor element and thus along the longitudinal direction of the sensor holders to adjust for the defined variability of the shape of the sensor element.

[0024] Each of the sensor holders can be configured as a pin, pin, cylinder, wire, and / or needle. Each of the sensor holders can be configured to be at least partially substantially shape-stable and / or at least partially substantially shape-variable and / or at least partially deformable. Each of the sensor holders can be configured to undergo partially substantially reversible deformation, such as elastic deformation, and / or substantially irreversible (plastic) deformation. Each of the sensor holders is specifically made of a metallic material.

[0025] The sensor element of the power supply device undergoes a partial change in shape during assembly, and is therefore characterized in its assembled state by at least a partially altered shape. The changed shape occurs particularly in the region of the sensor holder. In other words, the shape of the sensor element in its initial state differs from its shape in its assembled state.

[0026] A distance-holding element may be arranged, for example, as a clamping element between two sensor holders, positioning the sensor holders at a defined distance from each other. In other words, the distance-holding element forms a support element between the sensor holders. The sensor element may include at least two sensor holders.

[0027] It is feasible that the contact segment is arranged opposite to and / or spaced apart from at least one battery cell, and is configured to deform, particularly reversibly deform, and / or displace, the sensor element at least partially toward at least one battery cell due to assembly movement along the assembly direction. The contact segment is specifically configured to guide the sensor head of the sensor element toward the battery cell, i.e., toward the battery cell.

[0028] The contact segment can be configured, for example, as plate-shaped and / or substantially flat. The contact segment can be configured, on the one hand, to guide the sensor element, and on the other hand, to partially deform the sensor element, particularly when the sensor element moves substantially linearly (translationally) along the assembly direction during assembly.

[0029] The assembly process involves assembly movement, particularly linear (translational) movement, by which the sensor element is moved substantially in the assembly direction toward the assembly section and thus toward the contact section. For this purpose, the sensor element is specifically fixed to the carrier material structure. Through assembly movement, the sensor element can be positioned in a defined location while in contact with the contact section, wherein the sensor element is adjustable and at least partially deformable upon reaching the assembly state.

[0030] The shape change of the adjustable portion of the sensor element can be specifically configured in the area of ​​the sensor holder of the sensor element.

[0031] According to another aspect of the invention, the contact segment may include a contact surface associated with the sensor element and configured to support the sensor element, particularly the sensor head of the sensor element, in at least one direction in the assembled state, in particular to apply pressure to the sensor element so as to bring the sensor element into contact with at least one battery cell.

[0032] The contact surface can be a deformable surface for the sensor element, which is configured to allow the sensor element to be adjusted, at least partially deformed, due to movement substantially in the assembly direction, thereby adjusting, at least partially changing the shape of the sensor element.

[0033] It is feasible that the contact segment includes a contact surface associated with (facing the sensor element), wherein the contact surface is characterized, in particular, depending on the configuration of the sensor element (e.g., the configuration of the sensor head of the sensor element), by at least one of the following constructions: substantially flat (planar), substantially tapering along the assembly direction, wedge-shaped, trapezoidal, concavely curved, groove-shaped, slot-shaped; so as to guide and / or position and / or orient the sensor element, in particular the sensor head of the sensor element, in the assembled state, in a defined position.

[0034] The contact surface is specifically the surface that contacts the sensor head of the sensor element and positions the sensor head at a defined location relative to at least one battery cell.

[0035] The essentially flat (planar) contact surfaces can be arranged and / or oriented at an angle relative to the assembly direction.

[0036] According to another aspect of the invention, the assembly structure is characterized by one of the following constructions: cage-shaped, bag-shaped, basin-shaped, or groove-shaped; and the contact section is arranged inside the assembly structure and transitions substantially along the assembly direction into the recess to guide the sensor element, in particular the sensor head of the sensor element, toward at least one battery cell.

[0037] By constructing the assembly structure accordingly, a relatively compact structural form can be achieved, for example. On the other hand, by constructing such an assembly structure, sensor elements can be protected, for example.

[0038] It is feasible that the contact segment is configured as a tongue, rib, bevel, clamp, beam or lever, and is arranged in the assembled state to form a substantially gapless contact connection with at least one battery cell.

[0039] This ensures the relatively simple assembly and arrangement of sensor elements, especially without the need for additional or separate components.

[0040] According to another aspect of the invention, the assembly structure may be configured to hold at least one battery cell substantially in the assembly direction, so as to arrange at least one battery cell relative to the assembly structure in a defined position and / or orientation.

[0041] The defined position of the sensor element may include a position in which the sensor element, in particular the sensor head of the sensor element, contacts or forms a defined distance from the outer side (outer surface) of at least one battery cell.

[0042] According to another aspect of the invention, the assembly structure and the retaining frame can be integrally formed as a single component, particularly through at least one of the following processes: casting, injection molding, sintering, 3D printing; curing, shrinkage; and / or in the assembled state, the assembly structure is filled with a substantially shape-stable filler material characterized by a defined range of flow limits.

[0043] The power supply device is characterized by its ability to be constructed as a single unit through an assembly structure and retaining frame, thus reducing the variety of parts. The filler material can be thermal grease.

[0044] According to a second general viewpoint of the invention, the present invention relates to a method for assembling a sensor element to detect at least one operating state of at least one battery cell of a mobile power supply device, the power supply device having a retaining frame for arranging at least one battery cell in an assembly direction, wherein the retaining frame includes at least one assembly structure having a contact segment for the sensor element, the method comprising the steps of: - moving the sensor element substantially in the assembly direction, particularly linear (translational) movement; - partially changing the shape of the sensor element by means of the contact segment due to the movement of the sensor element; and / or - positioning and / or orienting the sensor element, which has at least partially changed shape, by means of the contact segment due to the movement of the sensor element, until substantially reaching a defined position so as to enable (directly and / or immediately) detection of at least one operating state of at least one battery cell.

[0045] The method according to the present invention can be a method for manufacturing a mobile power supply device.

[0046] To avoid repetition, it is clear that the apparatus and / or features disclosed herein that are specifically for the power supply device of the present invention should also be considered as method disclosures and are eligible for protection, and vice versa.

[0047] The foregoing embodiments and features of the present invention can be combined with each other arbitrarily or appropriately. Further details and advantages of the present invention will be described in more detail below with reference to the accompanying drawings. Attached Figure Description

[0048] The figures show:

[0049] Figure 1 A first embodiment of the mobile power supply device according to the present invention is shown in a perspective view, wherein the sensor elements and battery cells of the power supply device are highlighted;

[0050] Figure 2 The previous view (main view) showed Figure 1 Sensor components of mobile power supply devices;

[0051] Figure 3 Shown in sectional view Figure 1 An enlarged portion of the mobile power supply device, in which the sensor elements are shown in a first state;

[0052] Figure 4 Shown in sectional view Figure 1 An enlarged portion of the mobile power supply device, wherein sensor elements are shown in a first state and a second state;

[0053] Figure 5 A top view of the assembly structure of the power supply device is shown. Figure 1 An enlarged section of the mobile power supply device in the image;

[0054] Figure 6 It shows Figure 1 The multiple battery cells of the power supply device are arranged in the retaining frame.

[0055] In the figures, identical or functionally equivalent components or elements are indicated by the same reference numerals. To avoid repetition, reference is also made in part to the description of other embodiments and / or figures. Detailed Implementation

[0056] The following detailed description of the embodiments shown in the accompanying drawings is intended to further illustrate or clarify, and should in no way limit the scope of the invention.

[0057] Figure 1 A first embodiment of the mobile power supply device 1 according to the present invention is shown in a perspective view. The sensor element 20 and the battery unit 30 (also referred to simply as "battery") of the power supply device 1 are highlighted.

[0058] The mobile power supply device 1 is a portable, handheld, tool-free, manually assembled / disassembled, replaceable, and / or rechargeable mobile power supply device 1. For simplicity, the term "mobile" related to the power supply device 1 will be omitted below.

[0059] The power supply device 1 may include a single battery cell 30 or multiple battery cells 30. Hereinafter, the power supply device 1 is described in conjunction with a single battery cell 30.

[0060] The power supply device 1 can be configured as a rechargeable battery pack, wherein the battery cells 30 are based on and / or configured using lithium-ion storage technology. Other electrochemical storage technologies are also feasible. The power supply device 1 can be configured to form a plug-in connection with a charging device and electrical equipment. The power supply device 1 can be configured to supply electrical energy to electrical equipment in the form of handheld power tools.

[0061] To house the battery cell 30 and other cells and / or components, the power supply device includes a housing 50. The housing 50 may be constructed of a plastic-based insulating material. The housing 50 includes housing sections in the form of walls and / or wall segments.

[0062] To detect at least one operating state of the power supply device 1, the power supply device 1 includes a sensor element 20. The at least one operating state may in particular include the temperature and / or temperature change of the battery cell 30. Additionally or alternatively, the at least one operating state may, for example, include the voltage of the battery cell 30. Hereinafter, the power supply device 1 is described in conjunction with the sensor element 20 configured to detect the temperature of the battery cell 30.

[0063] The battery cell 30 is configured as a so-called circular battery, characterized by a cylindrical shape. The battery cell 30 includes an outer side (outer surface) 300. The battery cell 30 extends substantially along the longitudinal direction L30. The sensor element 20 extends substantially along the longitudinal direction L20 and includes a sensor head 220 and two sensor holders 211 and 212, wherein... Figure 1 The sensor holder 211 is visible and marked. The portions of the sensor holders 211 and 212 form the fixing portion 210 of the sensor element 20, which will be described in more detail below.

[0064] Figure 2 The previous view (main view) showed Figure 1 The power supply device 1 includes a sensor element 20. The sensor element 20 is specifically configured as a so-called NTC sensor ("NTC" is an abbreviation for "negative temperature coefficient") to detect temperature by measuring changes in resistance. The sensor element 20 includes a sensor head 220. A sensor chip can be integrated into the sensor head 220. The sensor head 220 is specifically configured to be substantially shape-stable and substantially rigid, particularly preferably substantially rigid.

[0065] Starting from the sensor head 220, sensor holders 211 and 212 extend substantially along the longitudinal direction L20 of the sensor element 20. The longitudinal direction L20 may be a direction in which the sensor element 20 extends to its maximum and longest extent.

[0066] The sensor head 200 is configured to detect temperature and / or temperature changes. Each of the sensor holders 211 and 212 is configured as a cylinder, particularly as a pin. Each of the sensor holders 211 and 212 can be configured, for example, as a so-called drahtstift. Each of the sensor holders 211 and 212 serves, on the one hand, to mechanically secure the sensor element 20, and on the other hand, to form an electrical connection to operate the sensor element 20.

[0067] Sensor holders 211 and 212 are respectively made of conductive materials based on metallic materials and / or metallic alloys. The metallic materials or metallic alloys are deformable, particularly partially substantially reversible and / or irreversible. In the initial state (state before assembly) and in the assembled state, the sensor element 20 is substantially shape-stable and retained in a defined position.

[0068] To maintain the distance between sensor holders 211 and 212, particularly the distance between them substantially along the longitudinal direction L20, a distance maintaining element 230 may be arranged between sensor holders 211 and 212. The distance maintaining element 230 is arranged between sensor holders 211 and 212 under prestress.

[0069] Sensor retainers 211 and 212 are characterized by deformation regions 211.1 and 212.1, respectively, at which the shape of the sensor element 20 changes during assembly and in the assembled state, as will be described in more detail below. Sensor retainers 211 and 212 are components of the fixing section 210 of the sensor element 20, which transitions into the sensor head 220.

[0070] Figure 3 A schematic diagram is shown. Figure 1 An enlarged partial view of the mobile power supply device 1. The sensor element 20 is in a first state. The first state indicates that the sensor element 20 is not yet positioned relative to the defined location of the battery cell 30.

[0071] The sensor element 20 is fixed to the carrier material structure 40 of the power supply device 1 via sensor holders 211 and 212, wherein Figure 3 Sensor holder 211 is visible and labeled. Furthermore, the sensor element 20 is fixed to the carrier material structure 40, particularly through a substantially material-fit connection, such as a brazing connection. Due to the extensions of sensor holders 211 and 212, sensor head 220 is arranged spaced apart from carrier material structure 40. Sensor head 220 is arranged at a defined distance from carrier material structure 40.

[0072] As previously described, the sensor holders 211 and 212 are pin-shaped and deformable when constructed using appropriate materials, particularly metallic materials. Therefore, the sensor holders 211 and 212 include deformation regions 211.1 and 212.1 (see also...) Figure 2 The deformation zone is configured to at least partially change the shape of the sensor element 20 due to the assembly state.

[0073] The carrier material structure 40 is configured as a circuit board (printed circuit board). In the illustrated embodiment, the carrier material structure 40 is configured as a plate. The carrier material structure 40 is used to carry electrical / electronic components and assemblies. The electrical / electronic components and assemblies may, for example, be components of a so-called battery management system of the power supply device 1. The battery management system is configured to control and / or regulate and / or monitor the charging process of the power supply device 1. Furthermore, the carrier material structure 40 is used to arrange and / or fix the electronic processing unit 60. The electronic processing unit 60 is connected to the sensor element 20. The electronic processing unit 60 is configured, for example, to detect the resistance change of the sensor head 220 of the sensor element 20 in order to determine, in particular, the temperature and / or temperature change.

[0074] For accommodating the battery cell 30, the power supply device 1 includes a retaining frame 10. The retaining frame 10 forms a load-bearing structure relative to the battery cell 30. The retaining frame 10 may represent a housing section and thus represent the wall and / or wall section of the housing 50 of the power supply device 1 (see also). Figure 1 The retaining frame 10 may be constructed, for example, of a substantially shape-stable plastic as an insulating material. The retaining frame 10 may be configured, for example, as a single, separate component. The retaining frame 10 includes at least one receiving section by means of which the battery cell 30 is arranged in a defined position and thus in a defined orientation and / or in a defined orientation in the assembly direction M and / or along the assembly direction M at the retaining frame 10.

[0075] The retaining frame 10 includes an assembly structure 100 configured to accommodate and / or arrange the sensor element 20. The assembly structure 100 is configured to be substantially cage-shaped or basin-shaped and may in particular be a component of the retaining frame 10.

[0076] The assembly structure 100 includes a contact segment 110, which represents a wall or at least one wall segment. The contact segment 110 is arranged and / or formed within the assembly structure 100. The contact segment 110 is arranged opposite and / or spaced apart from the battery cell 30. The contact segment 110, as a wall segment, includes a contact surface 111. The contact surface 111 is configured to be substantially flat (planar). The contact surface 111 is arranged obliquely or inclined and / or oriented relative to the assembly direction M, forming an installation angle α. The installation angle α of the contact surface 111 can, for example, be from approximately 20° to approximately 50°. Alternatively, the contact surface 111 can be configured to be gradually tapering, wedge-shaped, trapezoidal, concavely curved, groove-shaped, or channel-shaped along the assembly direction M.

[0077] The contact surface 111 serves, on the one hand, to guide the sensor head 220 of the sensor element 20. On the other hand, the contact surface 111 is configured to adjustably, at least partially, change the shape of the sensor element 20 in the assembled state. The shape specifically relates to the geometry of the sensor element 20. As previously mentioned, the sensor element 20 is a partially deformable sensor element 20, particularly in the fixed sections (i.e., sensor holders 211 and 212), because the sensor head 220 is configured to be relatively rigid or, in particular, substantially rigid.

[0078] The adjustable portion of the shape of the sensor element 20 occurs during or in the assembly process of the carrier material structure 40 to the retaining frame 10, which will be described in more detail below. During the assembly process, the carrier material structure 40 moves in a substantially linear (translational) manner along the assembly direction M toward the retaining frame 10 and thus toward the assembly structure 100 having the contact surface 111.

[0079] Here, after traveling a certain distance, the contact surface 111 comes into contact with the sensor head 220. The sensor head 220 slides more or less along the contact surface 111 as the carrier material structure 40 moves further substantially along the assembly direction M. Orientation occurs simultaneously with this substantially linear movement in the assembly direction M, i.e., the sensor head 220 is guided toward the battery cell 30 by the construction and / or arrangement of the contact surface 111. In other words, through the linear (translational) movement of the carrier material structure 40 in the assembly direction M, the sensor head 220 is gradually guided along the sliding direction R110 of the contact segment 110 via the contact surface 111, and thereby simultaneously deflects, and in particular presses, toward the battery cell 30.

[0080] Here, the deformation of the sensor holders 211 and 212 occurs at deformation regions 211.1 and 212.1. Therefore, the shape of the sensor element 20 is partially adjustable. The sensor holders 211 and 212 undergo a bending process during assembly.

[0081] The carrier material structure 40 and the sensor element 20 are arranged relative to each other on the carrier material structure 40 such that when the carrier material structure 40 moves substantially in the assembly direction M, the sensor head 220 moves particularly toward a defined position.

[0082] The defined position may include the position of the sensor head 220, in which the sensor head 220 contacts, in particular contacts with, substantially without gap, the measuring portion 301 on the outer side 300 of the battery cell 30.

[0083] Figure 4 A diagram is shown for clarity. Figure 3 The magnified portion shows the sensor element 20 in a second state in addition to the first state.

[0084] The second state represents the state in which the sensor element 20 has partially changed shape due to the movement of the carrier material structure 40 during assembly. This partial change in shape of the sensor element 20 is achieved through the deformation zones at the sensor holders 211 and 212, wherein… Figure 4 The deformation region 211.1 at the sensor holder 211 is visible and marked. Within deformation regions 211.1 and 212.1, for example, partially reversible deformation can occur, thereby generating prestress in the sensor element 20. In other words, by partially changing the shape of the sensor element 20, in particular, the sensor head 220 can be pressed against the contact surface 111, while maintaining the contact connection between the sensor head 220 and the contact surface 111 at all times. Furthermore, the contact surface 111 serves to support the sensor head 220, which in Figure 4 It is marked with a white arrow.

[0085] As the carrier material structure 40 moves forward substantially in the assembly direction M (this movement is in... Figure 4 (Partially indicated by a black arrow), the sensor element 20, particularly the sensor head 220, reaches a defined position whereby the sensor head 220 is positioned relative to the measuring portion 301 at least on the outer side 300. Specifically, as previously described, the defined position includes the position of the sensor element 20 in which the sensor head 220 contacts, particularly without gap, the measuring portion 301 and thereby contacts the battery cell 30. Alternatively, the sensor head 220 may contact the measuring portion 301 with relatively low pressure. Alternatively, the defined position may include a position in which the sensor head 220 is positioned relative to the measuring portion 301 at a defined distance.

[0086] In order to guide the sensor element 20, particularly the sensor head 220, toward the battery cell 30, the contact segment 110 transitions into the recess 120 within the assembly structure 100 along the assembly direction M, and through the recess 120 toward the battery cell 30. It can be understood that, in the assembled state of the sensor element 20, the carrier material structure 40 is fixed at the retaining frame 10 in a defined assembly position.

[0087] The sensor element 20 is housed within the assembly structure 100 and positioned at the battery cell 30. Additionally, the housing space of the assembly structure 100 may be filled with a filler material 130. The filler material 130 may be, for example, thermal paste.

[0088] Figure 5 A schematic diagram and a top view of assembly structure 100 are shown. Figure 1 A magnified partial view of the mobile power supply device 1. Sensor element 20 is hidden in this figure.

[0089] The integration of the assembly structure 100 and the contact section 110 within the retaining frame 10 is clearly visible. The basin-shaped configuration of the assembly structure 100 allows the sensor element 20 to be arranged protectively inside the power supply device 1 and thus, for example, between adjacent battery cells 30.

[0090] Figure 6 The arrangement of the multiple battery cells 30 of the power supply device 1 at the retaining frame 10 is shown as an additional illustration.

[0091] The assembly structure 100 for accommodating and arranging the sensor element 20 is integrated relatively space-savingly into the retaining frame 10, ensuring that the sensor element 20 is arranged in a defined position. With this invention, the operating status of the battery cell 30, particularly temperature and / or temperature changes, can be detected more accurately.

[0092] This invention is not limited to the embodiments described above. Instead, many variations and modifications are possible, which also utilize the inventive concept and therefore fall within the scope of protection. This invention also preferably claims protection on the subject matter and features of the dependent claims, regardless of the cited claims.

[0093] List of reference numerals

[0094] 1 Power supply device

[0095] 10. Maintain the frame

[0096] 20 sensor elements

[0097] 30 battery cells

[0098] 40 Carrier Material Structure

[0099] 50 housing

[0100] 60 processing units

[0101] 100 assembly structure

[0102] 110 contact section

[0103] 111 contact surface

[0104] 120 notch

[0105] 130 filler material

[0106] 210 Fixed Section

[0107] 211 Sensor Holder

[0108] 211.1 Deformation Region

[0109] 212 Sensor Holder

[0110] 212.1 Deformation Region

[0111] 220 sensor head

[0112] 230 Distance Holding Element

[0113] 300 outer side

[0114] 301 Measurement Location

[0115] L20 longitudinal direction

[0116] L30 longitudinal direction

[0117] M assembly direction

[0118] R110 sliding direction

[0119] α Installation angle

Claims

1. A mobile power supply device (1) having a retaining frame (10) for arranging at least one battery cell (30) in an assembly direction (M). in, The retaining frame (10) includes at least one assembly structure (100) for a sensor element (20) for detecting at least one operating state of the at least one battery cell (30). The at least one assembly structure (100) includes a contact segment (110) configured to adjustably, at least partially, change the shape of the sensor element (20) in the assembled state, and to arrange the sensor element (20) with at least partially changed shape at a defined position relative to the at least one battery cell (30) so as to be able to detect at least one operating state of the at least one battery cell (30).

2. The power supply device (1) according to claim 1. in, In the assembled state, the sensor element (20) - By means of a carrier material structure (40) for at least one unit (60) of the power supply device (1), particularly for an electronic processing unit (60) for processing at least one detected operating state of the at least one battery cell (30), or - By means of the housing section (50) of the power supply device (1), Mechanical fastening and / or electrical contact, The carrier material structure (40) or the shell segment is connected to the retaining frame (10) through an assembly process in the assembly direction (M). In the assembled state, the sensor element (20) is housed in the assembly structure (100), wherein the assembly structure (100) is arranged opposite to the carrier material structure (40) or the housing segment in the assembly direction (M).

3. The power supply device (1) according to claim 1 or 2. in, The sensor element (20) includes two sensor holders (211, 212) that extend from the sensor head (220) of the sensor element (20) along the longitudinal direction (L20) of the sensor element (20) and are arranged opposite to and / or spaced apart from each other. In order to maintain the distance between the two sensor holders (211, 212), a distance holding element (230) is arranged between the two sensor holders (211, 212). The distance holding element is movably supported in the longitudinal direction (L20) to adjust the shape of the sensor element (20) to a certain degree of variability.

4. The power supply device (1) according to any one of the preceding claims. in, The contact segment (110) is arranged opposite to and / or spaced apart from the at least one battery cell (30), and is configured to deform, particularly reversibly deform, and / or displace the sensor element (20) at least partially toward the at least one battery cell (30) due to assembly movement along the assembly direction (M).

5. The power supply device (1) according to any one of the preceding claims. in, The contact segment (110) includes a contact surface (111) associated with the sensor element (20) and configured to support the sensor element (20), and in particular the sensor head (220) of the sensor element (20), in at least one direction in the assembled state. Specifically, this is to apply pressure to the sensor element (20) so that the sensor element (20) comes into contact with the at least one battery cell (30).

6. The power supply device (1) according to any one of the preceding claims. in, The contact segment (110) includes a contact surface (111) associated with the sensor element (20), wherein the contact surface (111) is characterized, in particular, depending on the configuration of the sensor element (20), by at least one of the following constructions: flat, tapering gradually along the assembly direction (M), wedge-shaped, trapezoidal, concave, groove-shaped, or slot-shaped. So as to position and / or orient the sensor element (20), in particular the sensor head (220) of the sensor element (20), respectively, in the assembled state and at the defined position.

7. The power supply device (1) according to any one of the preceding claims. in, The assembly structure (100) is characterized by one of the following constructions: cage-shaped, bag-shaped, basin-shaped, or trough-shaped; and The contact segment (110) is arranged inside the assembly structure (100) and transitions into the recess (120) along the assembly direction (M) to guide the sensor element (20) toward the at least one battery cell (30).

8. The power supply device (1) according to any one of the preceding claims. in, The contact section (110) is configured as a tongue, rib, bevel, clamp, beam or lever, and is arranged in the assembled state to arrange the sensor element (20) to form a gapless contact connection with the at least one battery cell (30).

9. The power supply device (1) according to any one of the preceding claims. in, The assembly structure (100) and the retaining frame (10) are integrally formed as a single component, particularly through at least one of the following processes: casting, injection molding, sintering, 3D printing; and / or In the assembled state, the assembly structure (100) is filled with a shape-stable filler material (140), characterized by a limited range of flow limits.

10. A method for assembling a sensor element (20) to detect at least one operating state of at least one battery cell (30) of a mobile power supply device (1), the mobile power supply device having a retaining frame (10) for arranging the at least one battery cell (30) in an assembly direction (M). in, The retaining frame (10) includes at least one assembly structure (100) having a contact segment (110) for the sensor element (20). The method comprises the following steps: - Move the sensor element (20) in the assembly direction (M); - Due to the movement of the sensor element (20), the shape of the sensor element (20) is partially changed by the contact segment (110); and / or - Due to the movement of the sensor element (20), the sensor element (20) is positioned and / or oriented by the contact segment (110) to at least partially change shape. Until a defined position is reached so that at least one operating state of the at least one battery cell (30) can be detected.

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