CN117766928A - Battery pack, system having a first battery pack and a second battery pack - Google Patents
Battery pack, system having a first battery pack and a second battery pack Download PDFInfo
- Publication number
- CN117766928A CN117766928A CN202311226695.0A CN202311226695A CN117766928A CN 117766928 A CN117766928 A CN 117766928A CN 202311226695 A CN202311226695 A CN 202311226695A CN 117766928 A CN117766928 A CN 117766928A
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- Prior art keywords
- battery pack
- housing
- cell
- adapter module
- battery
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- Pending
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- 229910052802 copper Inorganic materials 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery pack having a housing and at least one battery cell and a cell holder for receiving the at least one battery cell. It is proposed that the battery pack has at least one adapter module for fixing the cell holders in the housing in the axial direction and/or in the radial direction.
Description
Technical Field
The present invention relates to a battery pack and a system having a first battery pack and a second battery pack.
Background
Battery packs for electric bicycles are known in the prior art.
Disclosure of Invention
The invention relates to a battery pack having a housing and at least one battery cell and a cell holder for receiving the at least one battery cell. It is proposed that the battery pack has at least one adapter module for fixing the cell holders in the housing in the axial direction and/or in the radial direction. Advantageously, the cell holders can thus be used for different battery packs having different housings.
The battery pack is in particular part of a system consisting of the battery pack and an electrical consumer, wherein the electrical consumer is supplied with energy during operation by the battery pack. The battery pack can be configured, for example, as a hand-held power tool battery pack or as an electric bicycle battery pack. The battery pack is in particular designed as a replaceable battery pack, which is preferably designed to be connected to the consumer in a tool-free manner. Alternatively, it is also conceivable for the accumulator to be fixedly arranged or integrated in the housing of the electrical consumer. The battery pack is in particular configured to be connectable to a charging device for charging the battery pack. Alternatively or additionally, the battery pack can also be configured such that it can be charged in a state of connection with the consumer.
The electrical consumer can be embodied in particular as a gardening implement, such as a mower or a hedge trimmer, as a household implement, such as an electric window cleaner or a hand-held vacuum cleaner, as a hand-held power tool, such as an angle grinder, screwdriver, drill, hammer drill, etc., as an electric power tool, such as an electric bicycle in the form of an electric booster bicycle or an electric self-propelled bicycle, as an electric scooter or as a measuring tool, such as a laser distance measuring device. Furthermore, it is also conceivable for the electrical appliance to be configured as a further appliance, in particular as a portable appliance, such as a site lighting device, a suction appliance or a site broadcast.
The housing of the battery pack is preferably designed as an outer housing, either in part or in full. The battery pack, in particular the housing of the battery pack, can be configured to be detachably connectable to the electrical consumer and/or the charging device via a mechanical interface or to be fixedly connected to the electrical consumer and/or the charging device. The housing of the battery pack can have one or more housing portions. The housing has at least one housing part configured as an outer housing part. The outer housing part delimits the battery pack from the outside and can be touched by a user. Furthermore, the housing can have at least one inner housing part which is completely surrounded by the at least one housing part. The housing can be constructed of a metallic material and/or plastic.
The one-piece holder can be constructed in one piece or in one piece. In the context of the present application, "integral" is to be understood as meaning, in particular, a component which is formed from a material, rather than from a plurality of components which are connected to one another in a material-and/or force-and/or form-locking manner. The integral component is thus made of a single material. In the context of the present application, "one-piece" is understood to mean a plurality of components which are connected to one another in a material-locking manner, for example by two-component injection molding (2K Spritzguss) or material-locking. Thus, the one-piece assembly can be made of one material or multiple materials. Alternatively, it is also conceivable for the one-piece holder to be constructed in several parts, wherein the different parts are connected to one another in a force-and/or form-locking manner. The housing of the battery pack is preferably designed such that the cell holders are completely enclosed by the housing. Alternatively, it is likewise conceivable for the at least one single-piece holder to be configured in part as an outer housing part. The one-piece holder is preferably constructed from plastic, in particular thermoplastic. The one-piece holder is preferably constructed from a temperature-resistant plastic, preferably a fiber-reinforced plastic. Alternatively, it is likewise conceivable for the one-piece holder to be constructed from a metallic material. Additional materials, such as ceramics, are also contemplated. The battery pack can have a single cell holder or a plurality of cell holders arranged next to one another or one after the other. The cell holder preferably has a single cell receptacle for receiving a single battery cell.
The cell holder can have one or more individual cell receptacles for receiving individual battery cells and/or one or more multi-cell receptacles for receiving a plurality of battery cells. The individual receptacles are in particular designed in such a way that, in the connected state to the battery cells, a large part of the outer surface, in particular a large part of the peripheral surface of the battery cells, is surrounded by the receptacles. In particular, at least 25%, preferably at least 50%, preferably at least 75% of the circumferential surface of the battery cell is surrounded by the receptacle. Preferably, the receptacle is configured such that the at least one battery cell rests on an inner surface of the receptacle and is secured by the receptacle. The one-piece holder preferably has a wall between two adjacent receptacles, which wall separates the receptacles spatially and/or electrically and/or thermally from one another. Preferably, the cell holder has a single cell receptacle for each battery cell. The individual cell receptacles preferably have at least one fastening element for the force-locking and/or form-locking fastening of the battery cells in the individual cell receptacles.
The battery pack can be connected to the consumer in a force-locking and/or form-locking manner via the mechanical interface. Advantageously, the mechanical interface comprises at least one actuating element by means of which the connection of the battery pack to the consumer and/or to the charging device can be released. The actuating element can be configured, for example, as a lock, a button, a lever or a button. The actuating element can be arranged on the battery pack and/or the consumer. Furthermore, the mechanical interface can comprise guide elements, for example guide rails, for guiding the battery pack during the connection process and/or centering elements for centering the battery pack during the connection process.
The battery pack also has at least one electrical interface via which the battery pack can be electrically connected to the consumer and/or the charging device. The battery pack can be charged and/or discharged, for example, by means of an electrical connection. Alternatively or additionally, it is also conceivable to transmit information from the battery pack to the consumer via the electrical interface, and vice versa. The electrical interface is preferably configured as a contact interface, wherein the electrical connection takes place via physical contact of at least two electrically conductive members. The electrical interface preferably comprises at least two electrical contact elements. In particular, one of the electrical contact elements is configured as a positive contact and the other electrical contact element is configured as a negative contact. Additionally, the electrical interface can have at least one additional contact configured for transmitting additional information to the electrical consumer and/or the charging device. The additional contacts may be configured as signal contacts, encoder contacts, temperature contacts, bus contacts, etc. The electrical contact element can be configured, for example, as a spring contact element in the form of a tulip contact or as a flat contact in the form of a contact blade. Alternatively or additionally, the electrical interface may have a secondary charging coil element for inductive charging. The electrical interface can be embodied as a plug/socket interface, for example, in which the battery pack has a socket and the consumer has a corresponding plug. The mechanical and electrical interfaces can be configured integrally or separately from one another.
Further, the battery pack preferably includes electronics. The electronic device can have, for example, a circuit board, a computing unit, a control unit, a transistor, a capacitor and/or a memory unit. Additionally or alternatively, it is likewise conceivable for the information to be ascertained by the electronics. The electronics are configured for controlling or regulating the battery pack and/or the consumer. The electronics include, inter alia, a BMS (Battery management System, english: battery Management System) configured for monitoring the battery pack. The BMS is particularly configured to prevent overcharge and/or deep discharge of the battery pack. Preferably, the BMS is configured for proper monomer balance. The electronics can also have one or more sensor elements, for example a temperature sensor for determining the temperature in the battery pack or a motion sensor for determining the motion. Alternatively or additionally, the electronic device can have a coding element, for example a coding resistor. The electrical contact elements of the electrical interface of the battery pack can be arranged on or connected to a circuit board of the electronic device. In the context of the present application, a "circuit board" is understood to mean a circuit carrier having an organic or inorganic substrate. The circuit board can be constructed as a rigid circuit board or a flexible circuit board. In addition, the circuit board may be a device-mounted or non-device-mounted circuit board. The circuit board may have a single layer or be constructed in multiple layers.
The battery cell may be configured as a primary cell having the following structure: one single electrode at one end and the other single electrode at the opposite end. In particular, the battery cells have a positive cell electrode at one end and a negative cell electrode at the opposite end. The battery cells are preferably nickel-cadmium or nickel-hydrogen battery cells, particularly preferably lithium-based battery cells or lithium-ion battery cells. Alternatively, it is also conceivable, for example, for the battery cells to be formed as soft-pack cells or prismatic cells. The battery voltage of the battery pack is typically a multiple of the voltage of the individual battery cells and is derived from the switching pattern (parallel or series) of the battery cells. Thus, in the case of a common battery cell having a voltage of 3.6 volts, exemplary battery voltages of 3.6 volts, 7.2 volts, 10.8 volts, 14.4 volts, 18 volts, 36 volts, 54 volts, 108 volts, etc. are derived. Preferably, the battery cells are configured as at least substantially cylindrical round cells, wherein the cell electrodes are arranged at both ends of the cylindrical shape.
The battery pack has, in particular, at least one cell connector which is designed to electrically connect the battery cells to the electronic components, in particular to the circuit board and/or to the electrical contact elements. The single body connector can be constructed in one piece, or in multiple pieces. The cell connector can be connected to the housing of the battery pack, in particular to the cell holder, in a force-locking and/or form-locking manner. It is also conceivable for the one-piece connector to be encapsulated partially or completely by the housing, in particular the one-piece holder. The single body connector is constructed of a metallic material. The single-piece connector can be constructed, for example, from pure copper (copper content > 95%), copper alloys or nickel compounds, steel (in particular Hilumin), aluminum alloys or aluminum. The cell connectors can be connected to the battery cells in a material-locking manner on the end sides or the peripheral sides of the battery cells.
The battery pack can have one or more adapter modules. Preferably, the battery pack has at least two adapter modules, wherein the adapter modules are arranged on the end face on the same cell holder or on different cell holders. The adapter module can be constructed from metallic materials and/or plastics. The adapter module can be constructed in one piece, in one piece or in several parts. The adapter module can be constructed from the same material as the housing and/or cell holder of the battery pack.
In the context of the present application, "radial fastening of the cell holders in the housing of the battery pack" is to be understood in particular as meaning that the adapter module brings about a substantially play-free support of the cell holders in the housing perpendicular to the longitudinal extension of the housing of the battery pack. In the context of the present application, "axial fixing of the cell holders in the housing of the battery pack" is to be understood in particular as meaning that the adapter module brings about a substantially play-free support of the cell holders in the housing along the longitudinal extension of the housing of the battery pack. The cell holders can be arranged, for example, in the housing of the battery pack such that the receptacles, in particular the individual cell receptacles, extend along or perpendicular to the longitudinal extension of the battery pack.
Furthermore, it is proposed that the adapter module has a first interface for a force-locking and/or form-locking connection of the adapter module to the housing.
It is further proposed that the adapter module has a second interface for a force-locking and/or form-locking connection of the adapter module to the one-piece holder.
It is furthermore proposed that the first interface and the second interface are arranged on the same side of the adapter module. Advantageously, a simple assembly can thereby be achieved. Alternatively, it is also conceivable for the interfaces to be arranged on adjacent or opposite sides. It is further conceivable that the first adapter module has a first interface and the second adapter module has a second interface.
Furthermore, it is proposed that the first and the second interface each have at least one connecting element for a force-locking and/or form-locking connection, wherein one of the connecting elements is designed to be immobile and the other connecting element is designed to be mobile, in particular to be sprung. Advantageously, an effective fixation can thereby be achieved. Alternatively, it is also conceivable for both connecting elements to be configured to be active or for both connecting elements to be configured to be inactive. The interface can have a plurality of identical connection elements or a plurality of different connection elements. It is also conceivable for the adapter module to have a single connection element for each interface, or for a single connection element to be assigned to both the first interface and the second interface.
It is further proposed that the at least one connecting element, in particular the movable connecting element, is designed to be elastic, so that the housing and/or the one-piece holder is acted upon with a force. Advantageously, a robust fixation can thereby be achieved.
Furthermore, it is proposed that the at least one connecting element is designed as a plastic spring. The plastic spring is preferably integrally formed with the adapter module or is molded onto it.
Furthermore, it is proposed that the adapter module has a cavity. The adapter module has, in particular, a wall delimiting the cavity, which rests on one side against the housing and on the preferably opposite side against the one-piece holder. Advantageously, a compact adapter module can thereby be realized.
It is further proposed that the adapter module is configured such that a cavity is formed between the one-piece holder and the housing. Advantageously, a buffer zone (Knautschzone) can be provided by means of the cavity, by means of which the battery cells can be effectively protected in the event of forces acting on the housing.
It is furthermore proposed that the adapter module has at least one guide element for guiding the cable. Advantageously, the assembly of the battery pack can thereby be optimized. The guide element can be configured, for example, as a recess in a wall of the adapter module or as a linear guide or a cable channel.
It is further proposed that the adapter module has at least one guide element for guiding the cell holder during the connection process. Advantageously, the assembly of the battery pack can thereby be further optimized. Preferably, one of the connecting elements is additionally configured as a guide element, for example as a conical guide surface.
It is furthermore proposed that the adapter module has at least one stop element for receiving a force in the axial direction. Advantageously, a robust axial fixation can thereby be achieved.
The invention further relates to a system comprising a first battery pack having a first housing and a cell holder and a second battery pack having a second housing and a cell holder, wherein the cell holders of the first battery pack and of the second battery pack are identical in design. It is proposed that the second housing is configured such that it has a larger cross-sectional area in the region of the one-piece holder than the first housing, wherein the one-piece holder in the second housing is connected to the second housing via the adapter module. Advantageously, the same cell holders can thereby be used for different battery packs or battery pack variants.
The first battery pack and the second battery pack can each have one or more cell holders. Preferably, the first battery pack and the second battery pack have different numbers of cell holders. Preferably, the second battery pack has fewer cell holders than the first battery pack. The first battery pack and the second battery pack can have the same operating voltage or different operating voltages. The first battery pack and the second battery pack can have the same capacity or different capacities.
It is further proposed that the system comprises an electrical consumer, in particular an electric bicycle, wherein the electrical consumer is electrically connected to the first battery pack and the second battery pack.
Drawings
Further advantages emerge from the description of the figures. The drawings, description and claims contain many combined features. Those skilled in the art will also purposefully consider these features alone and combine them into other combinations of interest.
The drawings show:
fig. 1 is a perspective view of an electric bicycle having a first battery pack and a second battery pack according to the present invention;
fig. 2 is a perspective view of the first battery pack;
fig. 3 is a cross-section of a first battery pack;
fig. 4 is a cross-section of a second battery pack;
FIG. 5 is a perspective view of the first adapter module;
fig. 6 is a perspective view of a second adapter module.
Detailed Description
In fig. 1, a consumer 10 having a first battery pack 100 and a second battery pack 200 is shown in a schematic side view. The electric consumer 10 is embodied by way of example as an electrically driven running tool 12, in particular an electric bicycle 14. The electric bicycle 14 can be configured as an electric power assisted bicycle (Pedelec) or an electric self-powered bicycle (eBike), for example.
The electric bicycle 14 has a housing 16 in the form of a frame 18 or bicycle frame. Two wheels 20 are connected to the frame 18. Furthermore, the consumer 10 has a drive unit 22, which comprises an electric motor. The electric motor is preferably configured as a permanent magnet-excited brushless dc motor. The electric motor is illustratively configured as a center motor, wherein hub motors and the like are also conceivable.
The drive unit 22 comprises a (not represented) control unit configured for controlling or regulating the electric bicycle 14, in particular the electric motor. The electric bicycle 14 has a pedal crank 24. The pedal crank 24 has a pedal crank shaft (not shown).
The control unit with the electric motor and the pedal crank shaft and the drive unit 22 are arranged in a drive housing 26 connected to the frame. The drive section housing 26 is arranged such that the lower tube and the seat tube of the frame 18 are connected to each other by the drive section housing 26. The drive movement of the electric motor is preferably transmitted to the pedal crankshaft via a transmission (not shown), wherein the magnitude of the assistance by the drive unit 22 is controlled or regulated by means of a control unit.
The consumer 10 is electrically and mechanically connected to a first battery pack 100, which is designed to supply the drive unit 22 with energy. First battery pack 100 is illustratively configured as a main battery packThe main battery pack must be connected to the electric bicycle to operate the electric bicycle 14. First battery pack 100 is illustratively configured as a replaceable battery pack 102. The first battery pack 100 is illustratively fully received in the frame 18 of the electric bicycle 14 in the connected state. The connection can be achieved here by storing the first energyThe battery pack 100 is pushed axially into the lower tube of the frame 18 and/or by pivoting the first battery pack 100 from sideways into the frame 18. Alternatively, it is also conceivable for the first battery pack 100 to be configured such that the first battery pack 100 can be fastened to the outer side of the frame 18.
The second battery pack 200 is also illustratively configured as a replaceable battery pack 202, wherein the second battery pack 200 is configured to be detachably connectable to the frame 18 of the electric bicycle 14 via a mechanical interface and an electrical interface (not shown). Second battery pack 200 is illustratively configured as a secondary battery packThe secondary battery pack is provided for improving the stroke of the electric bicycle 14. The second battery pack 200 illustratively has the same operating voltage of 36V as the first battery pack 100 and a smaller capacity than the first battery pack 100. The housing shape of the second battery pack 200 corresponds, for example, to a beverage bottle of the electric bicycle 14, wherein the (not represented) mechanical interface of the electric bicycle 14 for the second battery pack 200 can also be used for the (not represented) beverage bottle.
Fig. 2 shows a perspective view of first battery pack 100. First battery pack 100 has a housing 104 configured as an outer housing. The housing 104 illustratively has a substantially oval cross-section and extends substantially the entire length of the first battery pack 100.
The first battery pack 100 has a state of charge indicator 106, which is arranged on the housing 104 of the first battery pack 100 and is configured for displaying the state of charge of the first battery pack 100. The housing 104 of the first battery pack 100 furthermore has two end plates 108, which close the housing 104, in particular the exemplary cylindrical base body 105 of the housing, on the end face. End plate 108 is screwed to base 105 of first battery pack 100, for example, but it is likewise conceivable for end plate 108 to be connected to housing 104 by means of another connection type or to be formed integrally with base 105 of first battery pack 100.
The first battery pack 100 also has an electrical interface 110, which is arranged on the housing 104 of the first battery pack 100. The electrical interface 110 is illustratively configured as a socket 112 and terminates flush with the end plate 108 of the housing 104.
Fig. 3 shows a cross section of the first battery pack 100. First battery pack 100 includes exemplary four cell holders 114. The cell holders 114 are identical in design and each have, for example, ten individual cell receptacles 116, which are each configured to receive one individual battery cell 117. The shape of the single cell receiving part 116 is adapted to the shape of the battery cell 117. Illustratively, the individual cell receptacles 116 are configured cylindrically and have (not shown) at least one end-side opening, via which the battery cells 117 can be inserted into the individual cell receptacles 116. The one-piece holder 114 comprises a base 118, which is constructed, for example, from plastic, in particular hard plastic.
Furthermore, cell holder 114 illustratively comprises a cell fixing element 120, wherein cell fixing element 120 is designed to fix and firmly mount battery cells 117 in a radial direction in individual cell receptacles 116 of cell holder 114. The cell holder 114 illustratively includes a plurality of cell fixation elements 120. The one-piece fastening element 120 is preferably constructed of an elastic material, preferably a material that is more elastic than the base 118 of the one-piece holder 114. Preferably, the one-piece fixation element 120 is constructed of a soft plastic.
Further, cell holder 114 includes a cell holder securing element 122, wherein cell holder securing element 122 is configured for securing cell holder 114 in housing 104 of first battery pack 100. The one-piece holder securing element 122 is preferably constructed of an elastic material, preferably a material that is more elastic than the base 118 of the one-piece holder 114. The one-piece holder fixation element 122 and the one-piece fixation element 120 are preferably constructed of the same material. The cell holder fastening element 122 is preferably arranged such that the cell holder fastening element 122 bears on one side against the base body 118 of the cell holder 114 and on the opposite side against the inner wall of the housing 104 of the first battery pack 100.
Further, the first battery pack 100 has an electronic device 124. The electronics 124 illustratively includes a circuit board 126 disposed in an electronics receiving portion 128 of the unitary holder 114. The electronics 124 are electrically connected to the battery cells 117 via the not represented conductor tracks and cell connectors and comprise a battery management system BMS, in particular for cell balancing and monitoring of the battery cells 117.
First battery pack 100 includes exemplary four cell holders 114, which are arranged one after the other and each include ten battery cells 117.
Fig. 4 shows a cross section of the second battery pack 200 in the region of the cell holders 214 of the second battery pack 200. Unlike the first battery pack 100, the second battery pack 200 has, for example, only two cell holders 214, each having ten battery cells 217. As described above, the cell holder 214 of the second battery pack 200 includes the base 218 made of hard plastic, and the cell fixing element 220 and the cell holder fixing element 222 made of soft plastic. The electronics 224 of the second battery pack 200 are likewise arranged in the electronics receiving portion 228 of the second battery pack 200.
Second battery pack 200 has a housing 204 which has a larger cross-sectional area in the region of cell holders 214 than housing 104 of first battery pack 100. Cell holder 214 of second battery pack 200 and cell holder 114 of first battery pack 100 are identical in construction.
To connect the cell holder 214 of the second battery pack 200 to the housing 204, the second battery pack 200 illustratively has two adapter modules 300. Alternatively, it is also conceivable for the second battery pack 200 to have a single adapter module 300 or more adapter modules.
The adapter module 300 has, for example, a first interface 302 for the force-locking connection and form-locking connection of the adapter module 300 to the housing 204 of the second battery pack 200 and a second interface 304 for the force-locking connection of the adapter module 300 to the cell holder 214 of the second battery pack 200.
In fig. 5, the first adapter module 306 is shown in a perspective view. In fig. 6, the second adapter module 308 is shown in a perspective view. Illustratively, the first adapter module 306 and the second adapter module 308 each have a first interface 302 and a second interface 304.
The adapter module 300 is illustratively constructed integrally and preferably made of a hard plastic. The adapter modules 300 are illustratively arranged on the end-side ends of the different cell holders 214 of the second battery pack 200. The adapter module 300 has a flat base plate 310 (see fig. 5 and 6), wherein, starting from the base plate 310, exemplary four extensions (projections) 312 extend in the direction toward the adjacent individual holders 214. The continuation 312 here illustratively comprises a first connection element 314 of the first interface 302 and a second connection element 316 of the second interface 304, respectively. The first connecting element 314 and the second connecting element 316 are arranged on different sides of the extension 312, in particular on opposite sides. The continuation 312 is preferably configured to guide the cell holder 214 at least partially during assembly and thus functions as a guide element. The base plate 310 is preferably configured such that an axial fixation of the one-piece holder 214 is provided by the base plate 310 in at least one direction, for example as a stop, and the base plate thus acts as a stop element.
The second connecting element 316 has an exemplary rounded outer surface which, in the connected state, rests against the one-piece holder 214, preferably the one-piece holder fixing element 222 of the one-piece holder 214, so that a friction fit is formed between the adapter module 300 and the one-piece holder 214. The second connecting element 316 is illustratively embodied as rigid and immobile. The shape and positioning of the second connecting element 316 of the adapter module 300 here corresponds, for example, substantially to the shape and positioning of the screw socket 130 of the first battery pack 100, said screw socket 130 being used for the screw connection between the end plate 108 and the base body 105 of the housing 104 of the first battery pack 100.
The first connecting element 314 is illustratively configured to be active. The first connecting element 314 is illustratively configured to spring such that the first connecting element 314 is compressed, pressed in, and/or moved in the connected state. The first connecting element 314 is illustratively embodied as a plastic spring 313. The first connecting element 314 has a latching projection 315 which, in the connected state, preferably engages in a corresponding (not shown) receptacle on the inner side of the housing 204 of the second battery pack 200. Radial fixing of the cell holders 214 in the housing 204 of the second battery pack 200 is achieved by the first and second connecting elements 314, 316.
Advantageously, by means of the exemplary wedge-shaped configuration of the extension 312, in particular by means of the snap-action connecting element 314, the cell holder 214 can be effectively decoupled from vibrations and impacts acting on the housing 204 of the second battery pack 200. Furthermore, the first and/or second interfaces 302, 304 can be used to compensate for tolerances between the cell holders 214 of the second battery pack 200 and the housing 204.
Further, the adapter module 300 has a cavity 318 configured as a spacer 320. The cavity 318 is illustratively formed by the continuation 312 and is disposed between the first and second connection elements 314, 316, respectively. In the event of large forces acting on housing 204 of second battery pack 200, in particular on base 205 of housing 204, cavity 318 can act as a buffer and receive the forces by permanent deformation for protecting battery cells 217. Further, the second adapter module 308 illustratively has two cable routing elements 332. The cable guiding element 332 is illustratively arranged in the plane of the substrate 310 of the second adapter module 308. The cable guide elements 332 each have an opening 334 through which an undepicted cable element of the second battery pack 200, for example, an electric wire that guides the current, can be received.
Claims (15)
1. A battery pack having a housing (204) and at least one battery cell (217) and a cell holder (214) for receiving the at least one battery cell (217),
it is characterized in that the method comprises the steps of,
the battery pack (200) has at least one adapter module (300) for axially and/or radially fastening the cell holder (214) in the housing (204).
2. The battery pack according to claim 1, wherein the adapter module (300) is constructed in one piece or in one piece.
3. The battery pack according to any one of the preceding claims, wherein the adapter module (300) has a first interface (302) for a force-locking and/or form-locking connection of the adapter module (300) to the housing (204).
4. The battery pack according to any of the preceding claims, wherein the adapter module (300) has a second interface (304) for a force-locking and/or form-locking connection of the adapter module (300) to the cell holder (214).
5. The battery pack of claim 4, wherein the first interface (302) and the second interface (304) are arranged on the same side of the adapter module (300).
6. Battery pack according to claim 4 or 5, characterized in that the first interface (302) and the second interface (304) each have at least one connecting element (314, 316) for a force-locking and/or form-locking connection, wherein one of the connecting elements (316) is designed to be immobile and the other connecting element (314) is designed to be active, in particular to be spring-active.
7. The battery pack according to claim 6, wherein the at least one connecting element (314) is configured to be elastic, such that the housing (204) and/or the cell holder (214) are loaded with force.
8. The battery pack according to claim 7, characterized in that the at least one connecting element (314) is configured as a plastic spring (313).
9. The battery pack according to any one of the preceding claims, wherein the adapter module (300) has a cavity (318).
10. The battery pack of any of the preceding claims, wherein the adapter module (300) is configured such that a cavity is formed between the cell holder (214) and the housing (204).
11. The battery pack according to any one of the preceding claims, wherein the adapter module (300) has at least one guiding element for guiding a wire.
12. Battery pack according to any of the preceding claims, characterized in that the adapter module (300) has at least one guiding element for guiding the cell holders (214) during connection.
13. The battery pack according to any one of the preceding claims, wherein the adapter module (300) has at least one stop element for receiving a force in an axial direction.
14. A system comprising a first battery pack (100) having a first housing (104) and a cell holder (114) and a second battery pack (200) having a second housing (204) and a cell holder (214), wherein the cell holder (114) of the first battery pack (100) and the cell holder (214) of the second battery pack (200) are identical in construction,
it is characterized in that the method comprises the steps of,
the second housing (204) is configured to: the second housing (204) has a larger cross-sectional area in the region of the cell holders (214) than the first housing (104) of the first battery pack (100), wherein the cell holders (214) in the second housing (200) are connected to the second housing (204) via an adapter module (300).
15. The system of claim 14, comprising an electrical consumer (10), wherein the electrical consumer (10) is electrically connected to the first battery pack (100) and to the second battery pack (200).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022210058.1A DE102022210058A1 (en) | 2022-09-23 | 2022-09-23 | battery pack; System with a first battery pack and a second battery pack |
| DE102022210058.1 | 2022-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117766928A true CN117766928A (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311226695.0A Pending CN117766928A (en) | 2022-09-23 | 2023-09-21 | Battery pack, system having a first battery pack and a second battery pack |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117766928A (en) |
| DE (1) | DE102022210058A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2313949A (en) | 1996-06-07 | 1997-12-10 | Wang Zing Ching | Battery receptacle module |
| JP6705708B2 (en) | 2016-06-30 | 2020-06-03 | 株式会社シマノ | Battery holder, battery unit, and battery component including them |
| DE202019103044U1 (en) | 2019-01-15 | 2020-04-16 | Prophete GmbH & Co. KG | Implementation structure and electric vehicle with an implementation structure |
| EP4144625A1 (en) | 2021-09-01 | 2023-03-08 | SCOTT Sports SA | Electric bicycle with a battery sleeve |
-
2022
- 2022-09-23 DE DE102022210058.1A patent/DE102022210058A1/en active Pending
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- 2023-09-21 CN CN202311226695.0A patent/CN117766928A/en active Pending
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| Publication number | Publication date |
|---|---|
| DE102022210058A1 (en) | 2024-03-28 |
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