WO2015003781A1

WO2015003781A1 - Potential sensing apparatus, energy storage apparatus having said potential sensing apparatus, method for manufacturing said potential sensing apparatus, method for manufacturing said energy storage apparatus

Info

Publication number: WO2015003781A1
Application number: PCT/EP2014/001827
Authority: WO
Inventors: Alexander Langner; Lasse LANDT; Jens Meintschel
Original assignee: Li-Tec Battery Gmbh; Daimler Ag
Priority date: 2013-07-12
Filing date: 2014-07-02
Publication date: 2015-01-15
Also published as: DE102013011738A1

Abstract

Potential sensing apparatus (16) for sensing at least two electrical potentials in an energy storage apparatus (1), wherein the energy storage apparatus (1) has at least two electrochemical energy storage devices (3, 3a) that are connected in series with one another, wherein the energy storage devices (3, 3a) each have a first edge length k1 and each have two main leads (11, 11a) of different electrical polarity, wherein the electrical voltage of the energy storage device (3, 3a) can be tapped off from the main leads (11, 11a), wherein the potential sensing apparatus (16) has: a support device (21) that extends from a first end with an essentially rectangular second cross-sectional area q2 in a main direction of extent r^→, at least three electrical contact devices (17, 17a), which are connected to the support device (21), which are each designed to be electrically, in particular materially, connected to one of the main leads (11, 11a), and which are used to sense the electrical potential of the connected main lead (11, 11a), an interface device (18), which is connected to the first end, which can be electrically connected to the contact devices (17, 17a), and which has at least three interface elements (19, 19a), wherein the electrical potential of one of the contact devices (17, 17a) can be tapped off from at least one of the interface elements (19, 19a), at least three interconnects (20, 20a), which are connected to the support device (21), which extend at least in sections along the support device (21), and which are each designed to electrically connect one of said contact devices (17, 17a) to one of the interface elements (19, 19a).

Description

Potential detection device, energy storage device with this potential detection device, method for producing this

Potential detection device, method of making this

Energy storage device

The entire content of the priority application DE 10 2013 01 1 738 is hereby incorporated by reference into the present application.

The present invention relates to a potential detection device, an energy storage device having this potential detection device, a method for manufacturing this potential detection device, and a

Method for producing this energy storage device. The invention will be described in connection with lithium-ion batteries for the supply of electric drives. It should be noted that the invention may also be used regardless of the type of battery, the chemistry of the electrochemical energy storage device or regardless of the type of powered drive.

Energy storage devices are known with several, connected in series, energy storage devices for providing electrical energy and for supplying electrical drives. usual

Energy storage devices have two current conductors of different polarity, at which the voltage of the

Energy storage device can be tapped. These current conductors may be made of a substantially cuboidal or substantially cylindrical Energy storage device extend or may be arranged in one or different lateral surfaces of the energy storage device.

The inadequate life of some well-known

Energy storage devices are sometimes perceived as problematic. It is an object of the invention to increase the life of

To improve energy storage devices.

The object is achieved by a potential detection device according to claim 1. Claim 12 describes an energy storage device with this potential detection device. The task is also solved by a

Hers part proceed according to claim 14 for the potential detection device, direction. The object is also achieved by a manufacturing method according to claim 15 for an energy storage device with this

Potential detection device. Preferred developments of

Invention are the subject of the dependent claims. A potential detection device according to the invention serves to detect at least two electrical potentials an energy storage device. The energy storage device has at least two, connected in series, electrochemical energy storage devices. The

Energy storage devices each have a first edge length k1 and in each case two current conductors of different electrical polarity, wherein the electrical voltage of the energy storage device can be tapped off at the current conductors.

The potential detection device has a carrier device, which extends from a first end having a substantially rectangular, second cross-sectional area q2 along a main extension direction r. In particular, the carrier device is with a carrier tape

educated. The potential detection device has at least three, 8, 16 or more electrical contact devices which are connected to the carrier device. The contact devices are each configured to be electrically connected to a current conductor, in particular materially bonded. The contact devices each serve to detect the electrical potential of the current conductor connected to the contact device. The potential detection device N + 1 preferably has contact devices when the energy storage device N has energy storage devices.

The potential detection device has an interface device which is connected to the first end of the carrier device. The

Interface device is electrically connectable to the contact devices. The interface device has at least three interface elements, wherein the electrical potential of one of the contact devices can be tapped off at at least one or more of these interface elements. The interface device preferably has a separate interface element for each of these contact devices.

The potential detection device has at least three, 8, 16 or more interconnects which are connected to the carrier device. These interconnects extend at least in sections along the

Carrier means. These interconnects are each designed to electrically connect one of these contact devices to one of these interface elements. The interface device preferably has a separate interconnect for each of these contact devices. Preferably, the conductor tracks extend at least in sections through the material of

Carrier device through.

In many known energy storage devices, the

electrical voltages of the individual, connected in series,

Energy storage devices are not measured. During operation of such a series connection, in particular during charging or discharging, different voltages of the individual energy storage devices can occur come. Some charging instructions or discharge instructions for series connections are dependent on the summed electrical voltage of the energy storage devices (sum voltage) of the series circuit. It may happen that the electrical voltage of a single

Energy storage device U1 noticeably from the mean of the electrical

Voltages of the other energy storage devices of the series circuit Um deviates. If the energy storage device is properly charged or discharged with the voltage deviating from the mean value, then this energy storage device can be repeatedly overcharged or deep discharged.

It has been observed that repeated overcharging or over-discharging of an electrochemical energy storage device results in its accelerated aging and loss of charge capacity [Ah]. It has further been observed that a more aged energy storage device is the

Charging capacity of the series connection can significantly reduce, whereby premature replacement of the energy storage device can be triggered.

With the potential detection device according to the invention but the electrical potentials of the individual energy storage devices of

Series connection via the electrical contacting of numerous, in particular all, the current conductor detected and made available at the interface device. From the detected electrical potentials to the individual energy storage devices, one of the energy storage devices can be closed to their respective electrical voltage, in particular by forming the difference between a first potential and a second potential of the same energy storage device.

With knowledge of the electrical voltages can be taken when charging or discharging consideration of the energy storage device with the highest or lowest electrical voltage. In particular, repeated,

Overloading and overdischarging individual energy storage devices of the series connection can be avoided when the electrical voltages the individual energy storage devices are known. In this way, the accelerated aging of one of the energy storage devices can be counteracted.

By means of the potential detection device according to the invention, the accelerated aging of a single energy storage device which is part of a series circuit can be encountered. By avoiding accelerated aging, the charging capacities [Ah] of the

Energy storage devices of the series connection over a longer

Period are used to supply a consumer. This solves the underlying task.

Under an energy storage device according to the invention is a

Device to understand which in particular the provision of electrical energy, in particular the supply of an electrical consumer with energy used. The energy storage device has at least two or more, connected in series, electrochemical energy storage devices. Preferably, the energy storage device has two

Device connections of different electrical polarity, on which the sum voltage of the series-connected energy storage devices can be tapped. Preferably, the interconnected, and in particular mechanically connected, energy storage devices form a cell arrangement, which particularly preferably has the two device connections.

Preferably, the substantially cuboid

Energy storage devices in the cell array in a stacking direction next to each other and arranged in contact with each other, wherein the stacking direction is substantially parallel to a longitudinal axis arrangement of the cell assembly. Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Energy storage devices of the cell array, particularly preferably in series connection of the energy storage devices. In the context of the invention, an electrochemical energy storage device is to be understood as meaning a device which, in particular, has the

Provision of electrical energy and in particular the conversion of chemical energy into electrical energy is used. Preferably, the energy storage device has a substantially cuboid shape with a substantially rectangular first lateral surface. Alternatively, the energy storage device may have a substantially cylindrical shape with a substantially circular first lateral surface. The

Energy storage device has two current conductors of different electrical polarity, to which the voltage of the

Energy storage device can be tapped. Preferably, at least one of the current conductors from the first lateral surface extends into the

Surroundings. Alternatively, at least one of the current conductors may be arranged in the first lateral surface. For the purposes of the invention, a carrier device is to be understood as a device which, in particular for the mutual arrangement of the

Contact devices, the interface device and the conductor tracks and in particular for supporting contact devices, the

Interface device and the conductor tracks is used. The support means extends from a first end having a substantially rectangular, second cross-sectional area q2 along a

Main extension direction and ends in particular in a second end. Preferably, the carrier device is formed with a carrier tape, in particular with a polymer tape. Under an electrical contact device is within the meaning of the invention a

Device to understand which in particular the electrical, in particular cohesive, connection with one of the current collector is used, which serves in particular the detection of the electrical potential of the connected Stromableiters. At least three or more of these contact devices are connected to the carrier device and are in particular supported by the carrier device. The contact device is in a lateral surface the carrier device is arranged or by a lateral surface of the

Carrier device accessible, in particular for one of these current conductors, or is formed as, in particular rotationally symmetrical, projection relative to this lateral surface of the support means. Within the meaning of the invention, an interface device is to be understood as a device which can be electrically connected to the contact devices. The interface device serves to provide the detected electrical potentials of the energy storage devices. The interface device has at least three or more interface elements. At least one or more of these interface elements each of the electrical potential of one of these contact devices can be tapped. Preferably, the

Interface elements designed as electrically conductive pins or sockets. Preferably, the interface device of the electrical connection with a higher-level control device is preferably used

Interface device for providing the detected potentials to the higher-level control device. Preferably, the

Interface device for data exchange with the parent

Bubbly becomes control device.

In the context of the invention, a conductor track is to be understood as a device which serves, in particular, to make available the electrical potential detected at one of the contact devices at the interface device, in particular at one of the interface elements. At least three or more of these strip conductors are connected to the carrier device and extend at least in sections along the carrier device, preferably through the carrier device. Preferably, the conductor tracks are formed with a metal, particularly preferably with copper, aluminum or with an alloy with copper and / or aluminum. Preferably, the plurality of interconnects are electrically insulated from each other, more preferably a material of the carrier device. Preferably extend

Conductor tracks at least in sections by a polymer material of Carrier means. Preferably, the conductor tracks are integrally formed on the contact devices.

In the context of the invention, a frame is to be understood in particular to mean a device which has four, essentially rod-shaped,

Frame elements and a substantially cuboid receiving space is formed. The frame elements surround the receiving space at least in sections. The recording room is at least partially

Receiving at least one of the energy storage devices designed. The four frame elements are arranged corresponding to the sides of a rectangle and connected to each other in particular cohesively at the corners of this rectangle. The thus interconnected frame members limit the receiving space relative to the environment of the frame.

The frame is preferably formed with a polymer material, particularly preferably with a fiber material. For the purposes of the invention, a punched grid means a device which is punched out of a metal strip, in particular for the purpose of forming a plurality of strip conductors, which serves, in particular, for the mechanical stabilization of the carrier device, in particular the electrical connection of at least one of these contact devices

Interface device is used.

Preferably, the longitudinal axis of at least one of these conductor tracks is arranged substantially parallel to the main extension direction of the carrier device. Particularly preferably, the longitudinal axes of a plurality of these interconnects are arranged substantially parallel to one another. Preferably, at least one of these tracks has a

Connecting element for electrical contacting and mechanical

Connection to the interface device or one of these

Interface elements. Preferably, at least one of these conductor tracks has at least one reduced cross-section, in particular a thin point or notch, for simplified separation of the conductor track, in particular at a separation point of the carrier device. In at least one of these conductor tracks, the number of reduced cross sections particularly preferably corresponds to the number of separation points of the carrier device.

Preferably, the plurality of conductor tracks are at least partially surrounded by a polymer material, in particular with a polymer material encapsulated, in particular for the isolation of the conductor tracks relative to the

Surroundings. Particularly preferably, the aforementioned connecting element remains free or extends from the polymer material in the direction of

Interface device.

Preferably

• are after punching the multiple tracks first through

Metal bridges are firmly bonded and form the stamped grid

• are the multiple tracks after punching with a

Molded polymer material,

• The metal bridges are removed after encapsulation, so that the multiple tracks are held together by the polymer material.

Preferably, one of these contact devices or one of these

Contact surfaces integrally formed on one or more of these interconnects. Particularly preferably, the contact device extends substantially perpendicular to the longitudinal axis of the conductor track. This is particularly preferred

Contact device free or extends from the polymer material in the direction of a current conductor.

According to a preferred embodiment, at least two of

Contact devices, in particular two mutually adjacent the Contact devices, in particular the first contact device and the third contact device seen from the first end of the carrier device, arranged to each other at a predetermined distance d1 along the carrier device, wherein the predetermined distance d1 is adapted to the first edge length k1. Preferably, several pairs are adjacent

Contact devices each arranged at a predetermined distance d1 along the support means, wherein the predetermined distance d1 is adapted to the first edge length k1. Preferably, the predetermined distance d1 substantially corresponds to the first edge length k1. In this preferred embodiment, the distance d1 between the

Boundary edges, which face the first end of the carrier device, two, in particular adjacent, contact devices, in particular the second contact device and the third contact device seen from the first end of the carrier device, adapted to the first edge length k1 one of the energy storage devices. Preferably, the predetermined distance d1 substantially corresponds to the first edge length k1.

Preferably, the

This preferred development offers the particular advantage that the positioning of the contact devices with respect to the current collector of the adjacent energy storage devices before the electrical connection of contact devices and current conductors or for the

electrical connection of contact devices is simplified.

According to a preferred embodiment, at least two of

Contact means, in particular the first contact means and the third contact means seen from the first end of the carrier device from each other at a predetermined distance d1 along the carrier means, wherein the predetermined distance d1 to the distance between one of the current conductor of a first of these energy storage devices and one of the current conductor neighboring, with the first

Energy storage device interconnected, second of these Energy storage devices is adapted, in particular if between these two energy storage devices, a frame is inserted and the frame prevents contact of lateral surfaces of adjacent energy storage devices. Preferably, a plurality of pairs of adjacent contact devices to each other at a predetermined distance d1 along the

Carrier device arranged, wherein the predetermined distance d1 to the distance between one of the current collector of a first

Energy storage device of the pair and one of the current collector of a, connected to the first energy storage device, the second

Energy storage device of the pair is adapted, in particular if between these two energy storage devices, a frame is inserted and the frame contact of lateral surfaces of adjacent

Energy storage devices prevented. The predetermined distance d1 preferably corresponds essentially to the distance between one of the current conductors of a first of these energy storage devices and one of the current collectors of an adjacent second energy storage device connected to the first energy storage device.

In this preferred embodiment, the distance d1 between the

Limiting edges, which face the first end of the carrier device, two contact devices, in particular the second contact device and the third contact device seen from the first end of the carrier device, adapted to the distance of the centroids of the first lateral surfaces of two adjacent, in particular interconnected, energy storage devices. Preferably, the distance d1 between the

Boundary edges, which face the first end of the carrier device, two contact devices, in particular the second contact device and the third contact device seen from the first end of the carrier device, the distance of the centroids of the first lateral surfaces of two adjacent, in particular interconnected, energy storage devices. In particular, this preferred development offers the advantage that the positioning of the contact devices with respect to the current conductors of the energy storage devices adjacent to one another is simplified before the electrical connection of contact devices and current conductors or for the electrical connection of contact devices.

According to a preferred embodiment, which can be advantageously combined with one of the aforementioned refinements, the carrier device has a first section and at least one separable section, wherein the first section and the separable section each have at least one of these contact devices, wherein the first section between the first End and the separable section is arranged.

The first section has the interface device. One of these

Conductor tracks extends from the interface device through the first section to the contact device of the first section.

Borzugsweise the first section has a plurality of these contact devices, which means of a plurality of these tracks with the

Interface device are connected.

At least one of these tracks extends, starting from the

Interface device, through the first section through to the separable section. This track extends, starting from the

Transition to the first section, through the separable section up to the contact means of the separable section.

The separable section can be separated from the first section or from the rest of the carrier device if required, in particular if the number N + 1 of the contact devices of the first section is sufficient for detecting the electrical potentials of the N energy storage devices.

Preferably, after separation at least N + 1 of these remain

Contact means on the carrier device for detecting the electrical potentials of N energy storage devices. Preferably, the

Potential detection device after disconnecting N + 1 this Contact devices for detecting the electrical potentials of N energy storage devices.

This preferred development offers the particular advantage that the carrier device can be shortened if the separable section for detecting the electrical potentials of the energy storage devices is not required. This preferred development offers the particular advantage that the number of contact devices to the number of

Energy storage devices can be adjusted.

According to a preferred development, which can advantageously be combined with one of the aforementioned refinements, the first section and the separable section each have at least one receiving element

Receiving an independent mechanical connection means, wherein the connecting means for the mechanical connection of the

Carrier device is designed with the energy storage device. Preferably, the receiving element is formed with an eyelet, an ear or a tab. Preferably, the receiving element for receiving a mechanical connection means, particularly preferably a screw, a rivet, a locking means is formed. Preferably, the receiving element extends substantially perpendicular to the main extension direction of the respective section. Preferably, the first portion and / or the separable portion of two of these receiving elements, which are in the opposite direction substantially perpendicular

Main extension direction extend from the respective section.

This preferred development offers the particular advantage that the attachment of the carrier device is simplified. This preferred

Training offers the particular advantage that the attachment of the

Carrier device is possible both at the first end, as well as at the opposite second end. This preferred development offers the particular advantage that the connections of contact devices with current conductors are mechanically less stressed. According to a preferred embodiment, which can be advantageously combined with one of the aforementioned developments, the contact devices are each formed with a metallic contact surface, wherein

Preferably, the contact surfaces on or in the same lateral surface of the

Carrier device are arranged. Preferably, the contact surface is formed with aluminum, copper or with an alloy with aluminum and / or copper. Preferably, at least one or more of these are

Contact surfaces materially connected to one of these interconnects. Particularly preferably, at least one or more of these contact surfaces are integrally formed on one of these conductor tracks.

Preferably, the contact surface extends perpendicular to

Main extension direction from the carrier device. Particularly preferably, adjacent contact surfaces, which extend from the carrier device as described above, are interconnected with an electrically insulating material bridge, in particular with a polymer material.

This preferred development offers the particular advantage that the electrical connection of one of the contact surfaces with one of the current conductors is simplified. This preferred development offers the particular advantage that a cohesive connection of one of the contact surfaces with one of the current conductors is simplified. This preferred development offers

in particular, the advantage that the durability of the contact device is improved. This preferred development offers the particular advantage that the material of the contact device to the material of the Stromableiters

is adapted for a more durable and improved connection. According to a preferred embodiment, which can be advantageously combined with one of the aforementioned refinements, the carrier device has at least one separation point, wherein the separation point is arranged between two separable sections or between the first section and the adjacent separable section, wherein the separation point a first cross-sectional area q1, which is smaller than the second cross-sectional area q2.

Preferably, the value of the fraction q1 / q2 is less than 0.9, more preferably less than 0.75, more preferably less than 0.5, even more preferably greater than 0.3. Preferably, the separation point is formed as a thin point, with a constriction, with at least one recess or with at least one notch. Preferably, the first separation point is formed with at least two or more webs, which extends substantially along the

Main extension direction r "extend, wherein at least one or more of the conductor tracks are guided along one or more of these webs.

Particularly preferably, at least two of these webs are spaced by a second recess.

This preferred development offers the particular advantage that the separation of one of the separable sections is simplified. This preferred development offers the particular advantage that finding a preferred location for cutting the carrier device or the

Potential detection device is simplified.

According to a preferred embodiment, which can advantageously be combined with one of the aforementioned refinements, the carrier device has two or more of these separable sections and a plurality of separating points corresponding to the number of separable sections.

At least one conductor track is guided through the first section for each of the following separable sections. Between two of these separable

Sections one of these separation points is arranged. Preferably, at least one or more of these separable

Sections at least one of these contact devices, particularly preferably designed as a metallic contact surface, and more preferably one or two of these receiving elements. One or more of these detachable sections can be separated from the first section or from the remaining carrier device if required, in particular if the number N + 1 of the contact devices remaining on the carrier device is sufficient to detect the electrical potentials of the N energy storage devices. Preferably, after separation at least N + 1 of these contact devices remain on the

Carrier device for detecting the electrical potentials of N

Energy storage devices. Preferably, the

Potential detection device after disconnecting N + 1 this

Contact devices for detecting the electrical potentials of N energy storage devices.

This preferred embodiment offers the particular advantage that the carrier device can be shortened if one or more of these separable sections for detecting the electrical potentials of

Energy storage devices is not required. This preferred

In particular, further education offers the advantage that the number of

Contact devices can be adapted to the number of energy storage devices.

According to a preferred embodiment, which can be advantageously combined with one of the aforementioned refinements, is the

Potential detection device with at least one or more

Temperature sensors are formed, which each serve to detect a temperature of one of the energy storage devices, in particular the temperature of one of these current conductors, which are electrically connectable to the interface device, which are preferably each thermally conductive connected to one of the contact devices.

Preferably, the temperature sensors are thermally conductive with the

Contact devices connectable.

Preferably, the electrical connection between one of these

Temperature sensor and the interface device with one or two Stripes designed. Approach, the interface device for each of the interconnects on a separate interface element.

Preferably, the conductor tracks extend to the contact surfaces along a first lateral surface of the carrier device and the conductor tracks to the

Temperature sensors along a second, in particular opposite, lateral surface of the carrier device.

This preferred development offers the particular advantage that via the potential detection device or its interface device,

In particular, a higher-level control device, temperature values can be provided. This preferred development has the advantage that the cost of wiring independent temperature sensor can be avoided.

According to a preferred development, which can advantageously be combined with one of the aforementioned refinements, the number of conductor tracks which are guided through a first of the separable sections depends on the number M of separable sections which run along the

Main extension direction r "to follow the first separable portion, preferably with M + 1 traces are passed through the first separable portion.This preferred development has the particular advantage that material for the production of printed conductors can be saved.

According to a preferred embodiment, which can be advantageously combined with one of the aforementioned developments, the interface device is formed with a, in particular electromagnetic, communication element, or the interface elements of the interface device are parts of a connector.

Preferably, the communication element as a near-field radio, as an infrared transmitter, as a pulsed light source, as an inductive transmitter, as a capacitive Encoder trained. In this way, the interface device offers in particular the advantage of galvanic isolation.

Alternatively, the interface elements are parts of, in particular

commercially available, connector. Such a design offers the

Interface device in particular the advantage of a simplified assembly.

According to a preferred embodiment, which can be advantageously combined with one of the aforementioned refinements, has the

Potential detection device to an evaluation device, which is electrically connectable to at least two of these contact devices, which is configured to evaluate at least two detected electrical potentials to an electrical voltage of one of the energy storage devices.

Preferably, the evaluation device with multiple pairs of

Contact devices electrically connectable, these pairs of

Contact devices different electrical potentials of the same

Can capture energy storage device. Alternatively, the

Evaluation device with one or more pairs of

Interface elements electrically connected, these pairs of

Interface elements can detect different electrical potentials of the same energy storage device. Preferably, the evaluation device with one or more of these

Temperature sensor connectable and designed to provide proportional electrical voltages or currents.

Preferably, the evaluation device is connected between the conductor tracks and the interface elements, and designed to provide electrical voltages or electrical currents which are proportional to the detected voltages.

Preferably, the evaluation device of at least one of

Energy storage devices supplied with energy. Preferably, the Evaluation device formed with an integrated circuit.

Preferably, calibration regulations are stored in the evaluation device.

This preferred development offers the particular advantage that proportional signals can be provided at the interface device. According to a preferred embodiment, which can advantageously be combined with one of the aforementioned refinements, the carrier device is formed with at least one, in particular film-like, in particular band-shaped polymer material and / or with at least one metal strip, preferably with a stamped grid. Preferably, the carrier device is formed in strip form with at least one polymer film, which serves for supporting the conductor tracks and the mechanical connection with the interface device. Preferably, the support means has a wall thickness between 0.1 -0.4 mm, more preferably about 0.2 mm. The carrier device preferably has a second polymer film for electrically insulating the conductor tracks from the surroundings. The tracks are as strip-shaped

Metal foils, preferably with a wall thickness of about 0, 1 mm, formed and connected to the support means, in particular cohesively.

Preferably, the conductor tracks in the direction of

Energy storage device or its current collector to the outside and particular preferred are increased in area, so that the contact means are integrally formed with the conductor tracks. Preferably, the metallic interconnects extend between two polymer films, which the

Form carrier device. Alternatively, the metallic extend

Conductor tracks formed by a polymer film carrier device and are encapsulated with respect to the environment with an electrically insulating polymer. Preferably, the contact means are materially connected to the strip-shaped metal foils, particularly preferably to the

formed strip-shaped metal foils. Preferably, the interconnects are arranged between two of these polymer films. Preferably, the Support device designed as a flexible circuit board. The thickness of this carrier device is preferably less than 1.5 mm. Hereinafter, this type of construction is called "foil construction." This design offers, in particular, the advantage of simplified assembly of the support device or the

Potential detection device.

Alternatively, the support means is formed with a plurality of stamped metal strips. Preferably, the metal strips are initially formed as a stamped grid. The metal strips, which in particular integrally with the

Conductor tracks are formed, at least partially encapsulated with a polymer material. Preferably, the metal strips form the

Interconnects. Preferably, the contact devices are integrally formed on the metal strips and extend from the polymer material in the direction of the current conductor. Preferably, the thickness of this carrier device is 1 to 4 mm, more preferably more than 2 mm. This preferred development offers the particular advantage that the mechanical durability of the

Support device or the potential detection device is improved. This preferred development offers the particular advantage that the electrical resistance of the conductor tracks is lower. Hereinafter, this design is called "stamped grid construction".

According to a first preferred embodiment of

Potential detection device, which is advantageously combined with one of the aforementioned developments, is the carrier device with a

band-shaped, substantially rectangular, polymer film, preferably in film construction, formed.

The conductor tracks are supported by the polymer film. The interconnects are electrically insulated from the environment, in particular by a second polymer film. The conductor tracks extend along the polymer film and are guided to the first end of the carrier device. The conductor tracks are formed as strip-shaped metal foils. Preferably, the conductor tracks are electrically insulated from the environment by a second polymer film. The contact devices, designed as metallic, in particular in

Substantially rectangular, contact surfaces are integrally formed on the conductor tracks. The contact devices are, in particular cohesively, connected to the polymer film. Preferably, the contact devices are along the

Carrier device according to the distance to be contacted

Stromableiter two energy storage devices arranged or

spaced. Preferably, the metallic contact surfaces are laminated on one side with a polymer material and electrically insulated from the environment. Preferably, the contact means are accessible through recesses or windows in the polymer film and within the substantially rectangular shape of the polymer film. Alternatively, extend the

Contact devices substantially perpendicular to

Main extension direction, particularly preferably alternately in

opposite directions, from the substantial rectangular polymer film. The interface device is mechanically connected to the first end. The interface device has for each of the conductor tracks

Interface element. The interface device, in particular its interface elements, is / are electrically connected to the conductor tracks. Preferably, the interface device is designed as a plug connector. Alternatively, the interface device is one, in particular

electromagnetic, communication element formed.

Preferably, the support means along the

Main extension direction of several of these receiving elements.

Preferably, the receiving elements extend substantially perpendicular to the main extension direction. Particularly preferably, pairs of receiving elements extend in opposite directions and in the

Substantially perpendicular to the main direction of extension of the polymer film.

The carrier device preferably has a first section, at least one of these separable sections, and particularly preferably a separation point between the first section and the separable section. Of the detachable section has one of these contact devices. The first section has at least one, preferably eight, this one

Contact devices on. Preferably, the first section has two, four, seven, 14 of these receiving elements. This alternative of the preferred embodiment is particularly suitable for detecting the electrical

Potentials of eight energy storage devices and after disconnecting the detachable section for detecting the electrical potentials of seven energy storage devices.

Alternatively, the carrier device has a first section and eight of these separable sections. Each of these separable sections has one of these contact devices. Preferably, eight of these conductor tracks are guided through the first section into the separable sections. The first section has at least one, preferably eight, this one

Contact devices on. Preferably, the first section has two, four, seven, 14 of these receiving elements. Preferably, each of these separable sections has one or two of these receiving elements.

Preferably, a separation point is arranged between in each case two of these separable sections. This alternative of the preferred embodiment is particularly suitable for detecting the electrical potentials of seven to fifteen energy storage devices, depending on how many of the separable sections are severed.

Preferably, at least one of these separation points with several

Recesses, arranged substantially adjacent along a line perpendicular to the main extension direction, or formed as a perforation.

Particularly preferably, the interconnects extend between the

Recesses in the main extension direction.

This preferred embodiment has the advantage that the electrical potentials of 7-15 energy storage devices can be detected. This preferred embodiment has the advantage that the assembly of

Potential detection device is simplified. This preferred Embodiment offers the advantage that the number of contact devices can be adapted to the number of energy storage devices to be contacted. This preferred embodiment offers the advantage that the length of the carrier device to the length of the series-connected

Energy storage devices can be adjusted. This preferred embodiment has the advantage that the attachment of the

Potential detection device is simplified.

According to a second preferred embodiment of

Potential detection device, which is advantageously combined with one of the aforementioned developments, the support means with at least one or more, in particular punched, metal strip, preferably formed with at least one or more of these lead frames. These

Metal strips serve in particular for the mechanical stabilization of the carrier device, serve in particular as strip conductors, serve in particular for the electrical connection of one of these contact devices to the interface device.

The metal strips or interconnects are at least partially surrounded or encapsulated by a polymer material, in particular for electrical insulation from the environment, in particular for electrical insulation of the metal strips against each other. The metal strips extend in

Substantially along the main extension direction between one of these contact devices and the interface device. Preferably, the cured polymer material, the individual metal strips together, whereupon the carrier device is formed. Preferably, the metal strips each have one of these connecting elements, which extend from the cured polymer material in the direction of the interface device.

Preferably, one or more of these metal strips have at least one or more reduced cross-sections, in particular a thin spot or Notch, for simplified separation of the metal strip or the conductor tracks, in particular at a respective separation point of the carrier device, on.

The contact devices, designed as metallic, in particular in

Substantially rectangular, contact surfaces are connected to the conductor tracks or

Metal strip molded. Preferably, the contact devices along the carrier device according to the distance we are arranged to be contacted current conductors of two energy storage devices or

spaced. Preferably, the metallic contacts are coated on one side with a polymeric material and electrically isolated from the environment. The contact device preferably extends substantially perpendicular to the longitudinal axis of the metal strip, in particular in the direction of one of these current conductors, in particular of the polymer material in the direction of one of these current conductors.

The interface device is mechanically connected to the first end. The interface device has an interface element for each of the tracks or each of the metal strips. The interface device, in particular its interface elements, is / are electrically connected to the

Conductors or metal strips connected. Preferably, the

Interface device designed as a connector. Alternatively, the interface device is provided with a, in particular electromagnetic,

Formed communication element.

Preferably, the support means along the

Main extension direction of several of these receiving elements.

Substantially perpendicular to the main extension direction of the

Polymer material.

The carrier device preferably has a first section, at least one of these separable sections, and particularly preferably a separation point between the first section and the separable section. The detachable section has one of these contact devices. The first section has at least one, preferably eight, this one

Contact devices on. Preferably, the first section has two, four, seven, 14 of these receiving elements. This alternative of the preferred embodiment is particularly suitable for detecting the electrical potentials of eight energy storage devices and after disconnecting the separable section for detecting the electrical potentials of seven energy storage devices. Alternatively, the carrier device has a first section and eight of these separable sections. Each of these separable sections has one of these contact devices. Preferably, eight of these conductor tracks are guided through the first section into the separable sections. The first section has at least one, preferably eight, this one

Preferably, at least one of these separation points with several

Recesses, arranged substantially adjacent along a line perpendicular to the main extension direction, as a perforation, formed with at least one thin spot or notch, or with a plurality of webs. Particularly preferably, the metal strips extend through the webs.

This preferred embodiment has the advantage that the electrical potentials of 7-15 energy storage devices can be detected. This preferred embodiment offers the advantage that mechanical durability the potential detection device is improved. This preferred

Embodiment offers the advantage that the number of contact devices can be adapted to the number of energy storage devices to be contacted. This preferred embodiment offers the advantage that the length of the carrier device to the length of the series-connected

Potential detection device is simplified. This preferred

Embodiment offers the advantage that the electrical resistance of the individual conductor tracks is lower.

According to a second aspect of the invention, a

Energy storage device, this potential detection device, in particular according to one of the aforementioned developments, and at least two or more of these energy storage devices. At least one first current conductor, in particular first polarity, the first of these

Energy storage devices with a second current collector, in particular second polarity, the second of these energy storage devices,

in particular cohesively, electrically connectable, preferably by means of

Laser welding or ultrasonic welding. At least one of these

Contact means is connected to the first current collector or the second

Current conductor, in particular cohesively, electrically connectable, preferably by means of laser welding or ultrasonic welding.

Preferably, current conductors of adjacent energy storage devices are electrically connected to one another, in particular materially bonded, more preferably by means of laser welding or ultrasonic welding, so that the energy storage devices are connected in series,

in particular for the formation of a cell arrangement.

Preferably, the potential detection device, designed to detect the electrical potentials of N energy storage devices, is formed with N + 1 contact devices. Preferably, by means of N + 1 Contact devices of the carrier device N + 1 current conductor of the N in

Energy storage devices contacted electrically, in particular cohesively connected. N stands for the number of energy storage devices of the energy storage device or the cell arrangement. To record the electrical voltages of all of the N energy storage devices, the electrical potentials of N + 1 current collectors should be recorded.

Preferably, and when the number of contact means of the prepared potential detecting device for contacting the N

Energy storage devices is insufficient, then the remaining energy storage devices are electrically and / or mechanically connected to a second potential detection device. Particularly preferably, the first or the second of these potential detection devices is cut to length

Adaptation to the number of energy storage devices.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Energy storage devices of the cell array, particularly preferably in series connection of the energy storage devices.

In many known energy storage devices, the

electrical voltages of the individual, connected in series,

Energy storage devices are not measured. During operation of such a series connection, in particular during charging or discharging, different voltages of the individual energy storage devices may occur. Some loading instructions or unloading instructions for

Series connections are dependent on the summed electrical voltage of the energy storage devices (sum voltage) of the series circuit. It may happen that the electrical voltage of a single

Energy storage device U1 noticeably from the mean of the electrical

Voltages of the other energy storage devices of the series circuit Um deviates. If the energy storage device is properly charged or discharged with the voltage deviating from the mean, then This energy storage device can be repeatedly overcharged or deep discharged.

Series connection via the electrical contacting of numerous, in particular all, the current conductor detected and made available at the interface device. From the detected electrical potentials of the individual energy storage devices can on their electrical

Tensions are closed.

Overloading and total discharge of individual energy storage devices of the series connection can be avoided if the electrical voltages of the individual energy storage devices are known. In this way, the accelerated aging of one of the energy storage devices can be counteracted.

Energy storage devices of the series connection over a longer

Period are used to supply a consumer. This solves the underlying task. According to a preferred embodiment of the second aspect of the invention, the carrier device is cut to length, that is to say that so many separable sections have been removed that the number of contact devices exceeds the number N of energy storage devices by one. In particular, this preferred development offers the advantage that sufficiently many electrical potentials can be detected for determining the electrical voltages of all the energy storage devices of the energy storage device. This preferred development offers the particular advantage that a potential detection device or its carrier device does not remain unnecessary contact devices.

According to a preferred development of the second aspect of the invention, which can advantageously be combined with the aforementioned development, at least one or more of the energy storage devices have a, in particular substantially rectangular, first lateral surface, at least one or preferably two of the current conductors being made of same

Extending lateral surface, and at least one or both of these current conductors each having a contacting portion, which is substantially parallel to the first lateral surface, in particular in the direction of

adjacent energy storage device extends. Preferably, at least one overlaps in the cell array

Kontaktierungsabschnitt a first of these energy storage devices at least partially a contacting portion of a second of these energy storage devices, wherein the second energy storage device is adjacent to the first energy storage device, wherein a

Overlap area is formed. Preferably, these are

Contacting sections in the overlapping area are connected to one another in a material-locking manner, particularly preferably by means of laser welding or

Ultrasonic welding.

This preferred development offers the particular advantage that the electrical, in particular cohesive, connection of current conductors adjacent energy storage devices is simplified. This preferred development offers the particular advantage that the electrical,

in particular cohesive, connection of current conductors of adjacent energy storage devices is more durable. This preferred development offers the particular advantage that the electrical, in particular

cohesive, connection of current conductors a smaller

Transition resistance has.

According to a preferred development of the second aspect of the invention, which can advantageously be combined with one of the aforementioned refinements, the energy storage device has at least two or more frames which are each formed with four frame elements and a substantially parallelepiped-shaped receiving space, these frame elements surrounding the receiving space , wherein the receiving space for at least partially receiving at least one of the energy storage devices is configured. Preferably, the receiving space for the simultaneous and partial recording of two of these energy storage devices

designed.

Preferably, the energy storage device or the cell arrangement for N energy storage devices N + 1 of these frames. Particularly preferably, the cell arrangement terminates in the stacking direction with outer frames.

In this preferred embodiment adjacent touch

Energy storage devices do not work each other. In this preferred

Development is maintained between two adjacent energy storage device a minimum distance. The energy storage device has at least one clamping device, which is configured to urge at least two or more of these frames against each other, in particular to connect them non-positively.

Preferably, the clamping device can be guided by the frame, in particular by each one of the frame elements. Preferably, the tensioning device has one or more tension rods which pass through Recesses can be guided in the frame. Particularly preferably, the length of the tension rods is adapted to the number of energy storage devices or the number and dimensions of the frame.

At least one, preferably two, the current conductor of one of these

Energy storage devices can between two of these frames, in particular between a first frame member of the first frame and a first frame member of the second frame, in particular

non-positively, be held. Preferably, at least one or two of these current conductors extend from the receiving space between

opposite frame elements of adjacent frames.

The potential detection device can be mechanically, in particular non-positively, connected to at least one or more of these frames.

Preferably, the potential detection device is at least mechanically connected to the two outer frame, in particular non-positively. This preferred development offers the particular advantage that the electrochemically active parts of adjacent energy storage device do not touch each other. This preferred development offers the particular advantage that the electrochemically active parts can expand to a limited extent during loading or unloading without being squeezed. This preferred development offers the particular advantage that the

electrochemically active parts of the energy storage devices can be protected by the frame or its frame members. This preferred development offers the particular advantage that the

Energy storage device, in particular the number of

Energy storage facilities, to meet the needs of the

Consumer can be adjusted. This preferred development offers the particular advantage that the mechanical attachment of

Potential detection device is more stable. According to a third aspect of the invention, a method for producing the potential detection device, in particular according to one of

aforementioned preferred embodiments, the steps on:

51 providing the carrier device, which preferably has at least one, in particular foil-like, in particular band-shaped,

Polymer material and / or formed with at least one metal strip, preferably with at least one stamped grid, preferably with at least one of these separable sections,

52 connecting, in particular mechanically, the interface device with the carrier device,

53 forming one of these contact devices, in particular in or on a lateral surface of the carrier device,

54 connecting the contact device to the interface device,

in particular with one of these interface elements, by means of one of these interconnects, preferably forming the interconnect between one of the contact devices and one of these interface elements on or in the carrier device, preferably with

55 forming at least one of these separation points in the carrier device, in particular between two separable sections or between the first section and the adjacent separable section.

In step S1, the support means is preferably provided in FIG

Foil construction or formed with several punched metal strips.

Preferably, the carrier device has at least one of these separable sections. Preferably, the carrier device has at least one or more of these receiving elements. During step S2, the connection takes place, in particular depending on the design of the interface device, materially, in particular by gluing, or non-positively, in particular by clamping the carrier device in the interface device. During step S3, prepared contact devices or metallic contact surfaces can be connected to a lateral surface of the carrier device, in particular materially bonded. If necessary, step S3 must be carried out several times in accordance with the number of contact devices. During step S3, a recess or window may be created in a polymeric material and adjacent to the contactor.

During step S4, an electrical connection between existing interconnects and the interface device or their

Interface elements are produced.

In step S5, the support means or at least one of the separable portions is prepared for separation. Preferably, during step S5, the second cross-sectional area of the support means becomes the first

Cross-sectional area is reduced, particularly preferably with generating at least one notch, at least one thin point, at least one recess, at least one web or a perforation. Preferably, step S5 is performed several times, in particular according to the number of separation points or the separable sections.

In many known energy storage devices, the

electrical voltages of the individual, connected in series,

Series connections are dependent on the summed electrical voltage of the energy storage devices (sum voltage) of the series circuit. It may happen that the electrical voltage of a single Energy storage device IM noticeably from the mean of the electrical

Tensions are closed. With knowledge of the electrical voltages can be taken when charging or discharging consideration of the energy storage device with the highest or lowest electrical voltage. In particular, repeated,

By means of the potential detection device according to the invention, the accelerated aging of a single energy storage device which is part of a series circuit can be encountered. With avoidance of accelerated aging, the charging capacities [Ah] of the energy storage devices of the series connection over a longer

Period are used to supply a consumer. This solves the underlying task. According to a preferred embodiment of the aforementioned manufacturing method, the carrier device for step S1 is produced in film construction or formed with a plurality of stamped metal strips, preferably with at least one of these separable sections, preferably with at least one or more of these receiving elements. In this development, step S3 is performed before step S1, wherein the contact devices or

Contact surfaces are formed on the conductor tracks before the carrier device is provided. In this development, step S2 takes place substantially simultaneously with step S4.

This preferred development offers the particular advantage that the potential detection device for energy storage devices with

different numbers of energy storage devices can be prepared. In particular, when the first portion is formed with only three of these contactors, the potential detection apparatus can be advantageously used to fabricate an energy storage device having only two energy storage devices connected in series.

In particular, if the potential detection device is formed with more than eight separable portions, then the potential detection device may be advantageous for manufacturing a

Energy storage device with more than 15, connected in series,

Energy storage devices are used. This preferred

Further education offers the advantage that the

Potential detection device for a modular system for assembling energy storage devices with different numbers

Energy storage devices is suitable. According to a fourth aspect of the invention, a method for producing an energy storage device according to the second aspect of the invention or a preferred development with N of these

Energy storage devices the steps on:

51 1 arranging a second of these energy storage devices adjacent to a first of these energy storage devices, whereupon a

Cell array is formed, preferably one of these frames is inserted between these adjacent energy storage devices, preferably the cell assembly are added a total of N + 1 frame,

512 electrical, in particular cohesive, connecting a

Stromableiters, in particular first polarity, the first

Energy storage device with a current conductor, in particular second polarity, of the adjacent second energy storage device,

513 electrical, in particular cohesive, connecting one of these

Current conductor with one of these contact devices,

514 mechanically connecting the carrier device to the

Energy storage device, in particular with one of the frames, preferably with

515 separating at least one of these separable sections,

in particular along one of these separating points, whereupon preferably N + 1 contact devices remain on the carrier device, in particular before step S13, in particular before step S14, particularly preferably with

516 isolating at least one of these tracks on one of these

Separation points, in particular after step S15. In step S11, an arrangement of the energy storage devices is generated, the so-called cell arrangement, preferably with several, more preferably with N + 1, frame, which between any two of these

Energy storage devices are inserted. Particularly preferably, the cell arrangement terminates in the stacking direction with outer frames.

Preferably, and if the energy storage devices comprise current conductors with contacting portions, then during step S1 1

at least a first current conductor of a first this

Energy storage device arranged with a second current collector of a second of these energy storage devices touching and prepared for electrical connection.

Preferably, and if the energy storage device has these frames and if the current conductors are formed with these contacting portions, then the contacting portions extend at least

in sections along each outer peripheral surface of the frame and are good for electrical, in particular cohesive, connection

accessible.

Preferably, the energy storage devices are also mechanically connected to the cell assembly by means of the tensioning device during step S1 1. Particularly preferably, the cell arrangement terminates in the stacking direction with outer frames, whereupon the cell arrangement is mechanically more stable

During step S12, which depends on the number of

Energy storage devices is carried out several times, the electrical interconnection of the energy storage devices is generated. If the

Energy storage device N has energy storage devices, then step S12 for a series connection N-1 times to perform. To the

Stromableitern the outer energy storage devices of the cell assembly, the electrical voltage of the cell assembly is tapped. During step S13, which depends on the number of

Contact facilities must be performed several times, is the

Potential detection device for providing the electrical potentials of the energy storage devices electrically connected to the current conductors. If the energy storage device N has energy storage devices, then step S13 is to be performed N + 1 times. During step S13, one of the contact devices is preferably by means of laser welding or

Ultrasonic welding connected to one of the current conductors.

When the number of contact devices for the number of

Energy storage devices is insufficient, then two of these

Potential detection devices for the production of

Energy storage device can be used. If the number of

Contact means for the number of energy storage devices is insufficient, then some of the energy storage device with a second potential detection device can be electrically and / or mechanically connected

During step S14, which is preferably to be performed at least two or at least four times, the carrier device is mechanically connected to the cell arrangement or to at least two of these frames.

Preferably, the support means is mechanically connected to the outer frames. Preferably, the support means with several, more preferably with all, the frame mechanically connected.

An order of steps S 13 and S 14 is not mandatory.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Step S15 reduces the number of contact devices and matches the number N of energy storage devices. Depends on the Number N of the energy storage devices is step S5 if necessary perform multiple times. In step S5, the carrier device is shortened and the length of the carrier device is adapted to the length of the cell arrangement. With step S 15, the number of contact devices of

Potential detection device adapted to the number of energy storage devices.

In step S16, conductor tracks, which may be exposed after separation of one of these separable sections, are electrically insulated from the environment. Subsequently, in particular the measurement accuracy is improved. Then, in particular, the reliability of

Energy storage device improved.

In many known energy storage devices, the

electrical voltages of the individual, connected in series,

Energy storage device U1 noticeably from the mean of the electrical

It has been observed that repeated overcharging or over-discharging of an electrochemical energy storage device results in its accelerated aging and loss of charge capacity [Ah]. It has further been observed that a more aged energy storage device is the Charging capacity of the series connection can significantly reduce, whereby premature replacement of the energy storage device can be triggered.

Energy storage devices of the series connection over a longer

Period are used to supply a consumer. This solves the underlying task. Other advantages, features and applications of the present

Invention will become apparent from the following description taken in conjunction with the figures. It shows:

1 schematically a potential detection device according to the invention, FIG. 2 schematically shows the potential detection device according to FIG. 1, which is electrically connected to two energy storage devices, FIG.

Fig. 3 shows schematically an energy storage device with four

Energy storage devices and with a

Potential detection device for detecting the electrical

Potentials of the energy storage devices,

Fig. 4 shows schematically an energy storage device with seven

Energy storage devices and with a

Potential detection device according to a preferred development with separable sections,

5 shows schematically the energy storage device according to FIG. 3, wherein frames are inserted into the cell arrangement,

Fig. 6 shows schematically an energy storage device with angled

Stromableitern, which consist of the same lateral surface of

Extend energy storage device,

Fig. 7 schematically and partially decomposed an energy storage device with

15 energy storage devices according to Figure 6, with in the

Cell arrangement inserted frame, with a

Potential detection device, with a clamping device,

FIG. 8 schematically shows the energy storage device according to FIG. 7, after the steps S 11 and S 13, FIG.

9 schematically a section through the energy storage device according to FIG. 7,

10 shows schematically a section through the energy storage device according to FIG. 8, Fig. 11 schematically shows a detail of the energy storage device according to

FIG. 10, before one of the contact devices is connected to a current conductor,

12 shows schematically the energy storage device according to FIG. 11 after one of the contact devices is connected to one of the current conductors,

13 shows schematically a detail of the energy storage device according to FIG. 8,

FIG. 14 schematically shows a cut-to-length potential detection device in FIG

Foil construction for 15 energy storage facilities,

Fig. 15 schematically shows an enlarged detail of

Potential detection device according to FIG. 14,

FIG. 16 schematically shows the cut-to-length potential detection device according to FIG. 14, before and after step S 15, FIG.

FIG. 17 schematically shows an energy storage device whose cell arrangement 7 has energy storage devices according to FIG. 6, inserted frames and a clamping device, as well as a cut-to-length one

Film-type potential detecting device, after step S15, before step S13,

FIG. 18 schematically shows the energy storage device according to FIG. 17

Step S13,

19 schematically shows an energy storage device with 31

Energy storage devices and two of these

Film-type potential detecting devices, before step S13,

FIG. 20 schematically shows the energy storage device according to FIG. 19

Step S13, 21 schematically and partially disassembled an energy storage device with 15 energy storage devices according to Figure 6, with in the

Cell arrangement inserted frame, with a

Potential gripping device in punched grid construction, with a clamping device, after step S1 1 and before step S13,

FIG. 22 shows the energy storage apparatus according to FIG. 21 after step S13, FIG.

FIG. 23 schematically shows an enlarged detail of the energy storage device according to FIG. 22, FIG.

FIG. 24 schematically shows a potential detection device according to FIG. 21 in a stamped grid construction with a plurality of separable sections, FIG.

Fig. 25 shows schematically an enlarged detail of

Potential detection device according to FIG. 24,

FIG. 26 schematically shows the potential detection device according to FIG. 24, before and after step S 15, FIG.

FIG. 27 schematically shows an energy storage device whose cell arrangement 7. FIG

Energy storage devices according to Figure 6, having inserted frame and a clamping device, as well as a cut to length

Pitch grid-type potential detecting device, after step S15, before step S13,

FIG. 28 schematically shows the energy storage device according to FIG. 27

Step S13,

29 shows schematically an energy storage device with 31

Energy storage devices and two of these

Pitch grid potential detecting devices, before step S13,

FIG. 30 schematically shows the energy storage device according to FIG. 29

Step S 3, FIG. 31 is a flowchart of the method II according to the third aspect of the invention. FIG.

FIG. 32 is a flow chart for a preferred embodiment of the invention

Manufacturing method according to FIG. 31,

33 shows a flow chart for a further preferred development of the production method according to FIG. 31,

Fig. 34 is a flowchart of a manufacturing method according to the fourth

Aspect of the invention,

FIG. 35 is a flow chart for a preferred embodiment of the invention

Production method according to FIG. 34.

1 shows schematically a potential detection device according to the invention

16. The potential detection device 16 includes: a

Interface device 18, a carrier device 21, three contact devices

17, 17a, 17b and three tracks 20, 20a, 20b.

The carrier device 21 extends from a first end having a substantially rectangular cross-sectional area q2 along a

Main extension direction f. The carrier device 21 is provided with a

Polymer material formed. Preferably, the carrier device 21 is formed with a polymer film. Particularly preferably, the carrier device 21 is formed with two of these polymer films and the conductor tracks 20, 20a, 20b are arranged between these polymer films.

The contact devices 17, 17a, 17b extend from the carrier device 21 substantially perpendicular to the main extension direction r.

The conductor tracks 20, 20a, 20b extend between the

Contact devices 17, 17a, 17b and the interface device 18 along the carrier device 21st Preferably, the conductor tracks 20, 20a, 20b each formed with a metal foil and preferably cohesively with the Carrier device 21 connected. Preferably, the interconnects 20, 20a, 20b are insulated from the environment.

The interface device 18 preferably has a separate interface element for each of the interconnects 20, 20a, 20b. Preferably, the interface device is designed as a plug connector.

Figure 1 b shows schematically that the distance d1 between the first

Contact means 17 and the third contact means 17b, seen from the first end of the carrier device, is adapted to the edge length k1 of the dashed first energy storage device, preferably at least the first edge length k1 corresponds.

Figure 1 b shows schematically that the distance d1 between the

Limiting edges, which face the first end of the carrier device, the second contact device 17b and the third contact device 17a, seen from the first end of the carrier device is adapted to the first edge length k1 of the first energy storage device shown in dashed lines, preferably substantially corresponds to the first edge length k1.

Figure 1 c shows schematically that the distance d1 between a

Contact means 17 and an adjacent contact means 17b to the distance between a current conductor 1 1 b of the second

Energy storage device 3a and a current collector 1 1 of the first

Energy storage device 3 is adapted, preferably substantially the distance between a current collector 1 1 b of the second

Energy storage device 3a and a current collector 1 1 of the first

Energy storage device 3 corresponds. Figure 1 c shows schematically that the distance d1 between the

Limiting edges, which face the first end of the support means, the contact means 17b and the contact means 17a to the

Distance between the boundary edges, which face the first end of the support means, a current collector 1 1 b of the second Energy storage device 3a and a current collector 1 1 a of the first

Energy storage device 3a and a current collector 1 1 of the first

Energy storage device 3 corresponds.

Figure 1 c shows schematically that the distance d1 between the

Distance of the centroids of the dashed lines shown

Energy storage devices 3, 3a adapted that preferably the

Distance d1 between the boundary edges, which face the first end of the support means, the contact means 17b and the

Contact device 17a substantially corresponds to the distance of the centroids of the energy storage devices 3, 3a shown in dashed lines. FIG. 2 schematically shows the potential detection device 16 according to FIG. 1, which is electrically connected to two energy storage devices 3, 3 a.

The two energy storage devices 3, 3a are combined to form a cell assembly 2 and interconnected, preferably in series. The second current conductor 1 1 a of the first energy storage device 3 is connected to the first current conductor 1 1 b of the second energy storage device 3 a electrically, in particular cohesively connected.

A first of the contact devices 17 is connected to the first current conductor 1 1 of the first energy storage device 3 electrically, in particular materially connected. A second of the contact devices 17b is electrically connected to the second current conductor 11a of the first energy storage device 3, in particular materially bonded. A third of the contact devices 17c is connected to the second current collector 1 1 c of the second

Energy storage device 3a electrically, in particular cohesively, connected. It is not shown that the potential detection device 16 is also mechanically connected to the cell assembly 2 or its energy storage devices 3, 3a.

Incidentally, the comments on FIG. 1 apply. FIG. 3 shows schematically an energy storage device 1 with four

Energy storage devices 3, 3a, 3b, 3c and with a

Potential detection device 16 for detecting the electrical potentials of the energy storage devices 3, 3a, 3b, 3c.

The potential detection device 16 has five of these contact devices 17, 17 a, 17 b, 17 c, 17 d, which is composed of the carrier device 21 in

Extend substantially perpendicular to the main extension direction. The

Potential detection device 16 also has five of these tracks 20, 20a, 20b, 20c, 20d. Preferably, the interface device 18 has five of these interface elements and is designed as a connector. Incidentally, the potential detection device 16 is formed as shown in FIG.

The four energy storage devices 3, 3a, 3b, 3c are connected to a cell assembly 2 and interconnected, in particular in series. By way of example, this cell arrangement 2 or this energy storage device 1 has four energy storage devices 3, 3a, 3b, 3c. Otherwise, the comments on the previous figures apply.

FIG. 4 shows schematically an energy storage device 1 with seven

Energy storage devices 3, 3a, 3b, 3c, 3d, 3e, 3f and a preferred embodiment of the potential detection device 16 with three separable sections 23, 23a, 23b. The energy storage devices 3, 3a, 3b, 3c, 3d, 3e, 3f are one

Cell arrangement 2 connected and interconnected, in particular in series. By way of example, this cell arrangement 2 or this Energy storage device 1 on seven energy storage devices 3, 3a, 3b, 3c.

The potential detection device 16 has a total of eight of these

Contact means 17, 17 a, 17 b, 17 c, 17 d, 17 e, 17 f, 17 g, which is formed from the support means 21 substantially perpendicular to

Extend main extension direction. Preferably, the

Contact means 17, 17a, 17b, 17c, 17d, 17e, 17f, 17g formed as metal foils.

The carrier device 21 has a first section 22 with five of these

Contact devices 17, 17a, 17b, 17c, 17d and three of these separable

Sections 23, 23a, 23b. Each of these separable portions 23, 23a, 23b has one of these contact means 17e, 17f, 17g. The carrier device 21 has three separation points 25, 25a, 25b, along which the separable portions 23, 23a, 23b can each be separated. Preferably, the separation points 25, 25a, 25b are formed as perforations.

The potential detection device 16 also has eight of these tracks, which are preferably formed as metal foils, which with the

Carrier device 21, in particular cohesively, are connected.

Preferably, the interface device 18 has eight of these

Interface elements and is designed as a connector.

Incidentally, the potential detection device 16 is formed as shown in FIG. Otherwise, the comments on the previous figures apply.

FIG. 5 schematically shows the energy storage device 1 according to FIG. 3, wherein frames 40, 40a, 40b are inserted into the cell arrangement 2. By way of example, this cell arrangement 2 or this energy storage device 1 has four energy storage devices 3, 3a, 3b, 3c. The

Energy storage devices 3a, 3b are covered by the frames 40, 40a, 40b and therefore shown in dashed lines. The Energy storage devices 3, 3c are partially covered by the frames 40, 40a, 40b and shown in phantom in part.

The current conductors 1 1, 1 1 a extend between the frame 40, 40a, 40b in the environment and can be frictionally held by the frame 40, 40a, 40b. The current conductor 1 1, 1 1 a of the energy storage devices 3, 3a, 3b, 3c have these contacting sections 13, 13a. The

Contacting portions 13, 13a extend substantially in

Main extension direction and each in the direction of an adjacent

Energy storage device. A contacting section 13 of a first

Energy storage device 3 at least partially covers a contacting section 13a of an adjacent and interconnected second energy storage device 3a. Said contacting section 13 a of the second energy storage device 3 a is between the frame 40 and the contacting section 13 of a first energy storage device 3

arranged. The contacting section 13 is electrically connected to the contacting section 13a, in particular by material bonding.

The contact device 17 is electrically connected to the contacting section 13 of the first energy storage device 3, in particular by material bonding,

connected. Otherwise, the comments on the previous figures apply.

FIG. 6 schematically shows an energy storage device 3 with angled current conductors 1 1, 11 a, which extend from the same first lateral surface of the energy storage device 3.

The current collector 1 1, 1 1 a have contacting sections 13, 13a. The first contacting section 13 and the second contacting section 13a extend in the opposite direction and in each case in the direction of an adjacent, in particular interconnected, energy storage device. Preferably, the energy storage device 3 is limited with a composite film from the environment. This composite film acts to exchange chemical substances between the electrochemically active part of the

Energy storage device and the environment contrary. FIG. 7 shows partly schematically and disassembles an energy storage device 1 with 15 energy storage devices 3, 3a according to FIG

Cell assembly 2 inserted frame 40, 40a, with a

Potential detection device 16 and with a tensioning device 43.

By way of example, this cell arrangement 2 or this energy storage device 1 has fifteen of these energy storage devices 3, 3a, 3b, 3c.

Step S1 1 is to be executed at least once again. Only then can steps S13 and S14 be carried out.

The frames 40, 40a each have one of these receiving spaces 42, 42a. The potential detection device 16 is prepared in foil construction and has 16 of these contact devices 17, 17a. The tensioning device 43 has a plurality of tension rods, which can be guided through recesses in the frame 40, 40a. Between each two of these frames 40, 40a, the current conductor 1 1, 1 1 a of these energy storage devices 3, 3a out.

Otherwise, the comments on the previous figures apply. Figure 8 shows schematically the energy storage device 1 according to Figure 7, following the steps S1 1 and S13.

By way of example, this cell arrangement 2 or this energy storage device 1 has fifteen energy storage devices 3, 3a, 3b, 3c.

The cell assembly 2 and the frame 40, 40a is / are by the

Clamping device 43 braced. The carrier device 21 has

Receiving elements 24, 24 a and is mechanically connected at least to the outer frame 40, 40 b. The mechanical attachment of the Carrier device 21 to the frame is the more durable electrical, in particular cohesive, connection between the

Contact devices 17, 17a and the current conductors 1 1, 1 1 b. The

Interface device 18 extends beyond first frame 40. The current conductors 1 1 a, 1 1 b, which are associated with adjacent energy storage devices, extending between each two of these frames and have Kontaktierungsabschnitte 13, 13 a. These contacting sections 13, 13a extend essentially parallel to the main extension direction or to the longitudinal axis of the arrangement, overlap one another at least in sections, and are connected to one another in a material-locking manner.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Energy storage devices of the cell array, particularly preferably in series connection of the energy storage devices. Otherwise, the comments on the previous figures apply.

FIG. 9 partially shows a section through the

Energy storage device 1 according to FIG. 7.

By way of example, this cell arrangement 2 or this energy storage device 1 has fifteen energy storage devices 3, 3a, 3b, 3c. Otherwise, the comments on the previous figures apply.

FIG. 10 partially shows a section through the

Energy storage device 1 according to FIG. 8.

Otherwise, the comments on the previous figures apply.

Figure 1 1 shows schematically a detail of the energy storage device 1 according to Figure 10, before one of the contact means 17 with a

Stromableiterl 1 a is connected. The contacting portions 13, 13 a of the adjacent

Energy storage devices 3, 3a overlap each other in sections and are connected to each other cohesively. The contacting portion 13 abuts against a frame member 41 a of the frame 40a. The contact device 17 is not yet electrically connected to the contacting portion 13 a.

The receiving spaces 42, 42a, 42b are dimensioned so that the electrochemically active parts of the energy storage devices 3, 3a do not touch each other.

Otherwise, the comments on the previous figures apply.

FIG. 12 schematically shows the energy storage device 1 according to FIG. 11 after the contacting device 17, according to step S13, is electrically connected to one of the current conductors 11, in particular to the contacting section 13a. The carrying device 21 is connected to the connecting means 44 with the frame 40.

Otherwise, the comments on the previous figures apply. FIG. 13 schematically shows a detail of the energy storage device according to FIG. 8.

The potential detection device 16 or its carrying device 21 is mechanically connected to the frame 40 by plastic heat rivets 44.

The current collector 1 1, 1 1 a, 1 1 b or their contacting sections 13, 13a, 13b each extend substantially in the direction of

Main extension direction of the support device 21st The first

Contacting device 17 is electrically connected to the first current conductor 1 1 of the first energy storage device or its contacting section 13, in particular welded. The second contacting device 17a is welded to the current collector 11b of the second energy storage device or its contacting section 13b. The current collector 1 1 b of the second energy storage device is connected to the second current collector 1 1 a of first energy storage device electrically connected, in particular welded.

Otherwise, the comments on the previous figures apply.

FIG. 14 shows schematically a cut-to-length potential detection device 16 in foil construction for 15 energy storage devices.

The carrier device 21 has a plurality of receiving elements 24, 24a for attachment to the cell arrangement or with frames between adjacent energy storage devices. The carrier device 21 has at least one polymer film, which serves for supporting the conductor tracks and the mechanical connection with the interface device. Preferably, the support means has a wall thickness between 0.1-0.4 mm, more preferably about 0.2 mm. The carrier device 21 preferably has a second polymer film for electrically insulating the conductor tracks from the surroundings. By way of example, this potential detection device for detecting the electrical potentials of 15 energy storage devices is shown. The potential detection device 16 has a total of 16 contact devices 17, 17 a, 17 b, which are substantially perpendicular to

Main extension direction of the support means 21 extend. The contact devices 17, 17a, 17b are formed as flat metal foils. The contact devices 17, 17 a, 17 b are connected via conductor tracks 20, 20 a to the interface device 18.

It can be seen that the number of printed conductors 20, 20a decreases with increasing distance from the interface device 18. The conductor tracks 20, 20a are materially connected to the carrier device 21. Preferably, the conductor tracks 20, 20a as metal foils, particularly preferably with a wall thickness of about 0, 1 mm formed. Preferably, the

Conductors in the direction of the energy storage devices or their Electric discharge to the outside and are enlarged in area, so that the

Contact means 17, 17a, 17b are formed integrally with the conductor tracks. The metallic interconnects 20, 20a preferably extend between two polymer films which form the carrier device 21. Alternatively, the metallic interconnects 20, 20a extend through with one

Polymer film formed carrier device 21 and are compared to the

Surrounded with a polymer.

Preferably, the interface device is designed as a plug connector.

Otherwise, the comments on the previous figures apply. FIG. 15 schematically shows an enlarged detail of FIG

Potential detection device 16 according to FIG. 14.

The carrier device 21, formed with at least one polymer film 30, 30a, has projections 30a in the direction of the contact devices 17, 17a, 17b, which support the contact devices 17, 17a, 17b and the conductor tracks 20, 20a.

Otherwise, the comments on the previous figures apply.

FIG. 16 schematically shows the cut-off potential detection device 16, 16a according to FIG. 14, before (above) and after (below) step S15.

The potential detection device 16 is formed with a separation point 25 along which the separable portion 23 from the first portion 22nd

can be separated. The first section has eight of these

Contact devices 17, 17a and receiving elements 24. The detachable section 23 also has eight of these contact devices and

Recording elements on. Before step S15, the potential detection device 16 is exemplary of

Recording the electrical potentials of 15 energy storage devices prepared. After step S15, the potential detection device 16a is designed as an example for detecting the electrical potentials of seven energy storage devices.

Otherwise, the comments on the previous figures apply.

Figure 17 shows schematically an energy storage device 1, whose

Cell arrangement 2 has seven energy storage devices 3 according to FIG. 6, inserted frames 40, 40a and a tensioning device 43, as well as a cut-to-length potential detection device 16 in foil construction, after step S15, before step S13.

By way of example, this cell arrangement 2 or this energy storage device 1 has seven energy storage devices 3, 3a, 3b, 3c. In the cell assembly 2, the energy storage devices are held between frames. The two current conductors of one of these energy storage devices are frictionally held between two of these frames. The frames are connected to each other with the clamping device 43 and in particular braced. The current conductor 1 1, 1 1 a of the energy storage device 3 are frictionally held between the frame 40, 40 a. This also applies to the other, covered by the frame, energy storage devices of the cell assembly 2. the current collector 1 1, 1 1 a, 1 1 b have Kontaktierungsabschnitte 13, 13a, 13b, which extend substantially in the direction of the longitudinal axis. The contacting portion 13a of the energy storage device 3 is disposed between the contacting portion 13b of the adjacent energy storage device and the frame 40a. These contacting portions 13a, 13b are electrically connected to each other, in particular materially connected.

The potential detection device 16 has eight contact devices 17, 17a, which are designed as metallic contact surfaces. The

Contact device 17a is provided to be electrically connected to the contacting section 13b, in particular by material bonding. The potential detection device 16 has a plurality of receiving elements 24, which serve the mechanical connection with in particular the outer frame 40, 40b of the cell assembly 2, in particular with connecting means 44.

Otherwise, the comments on the previous figures apply.

FIG. 18 shows schematically the energy storage device 1 according to FIG. 17 after step S13, in particular after step S14.

The contact devices 17 of the potential detection device 16 are each electrically connected to current conductors 1 1 or their contacting sections 13, in particular by material bonding.

The carrier device 21 is connected to the outer frame 40, 40 b of

Cell assembly 2 mechanically connected. Preferably, the

Connecting means 44 formed as a warm rivets and materially connected to the outer frame 40, 40b.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Otherwise, the comments on the previous figures apply.

FIG. 19 schematically shows an energy storage device 1 with 31

Energy storage devices and two of these

Potential detection devices 16, 16a in foil construction, before step S13.

The cell arrangement 2 substantially corresponds to the cell arrangement according to FIG. 17, but has by way of example 31 energy storage devices.

The potential detection devices 16, 16a are each 16

Contact devices 17, 17a designed for detecting the electrical potentials of a portion of the energy storage devices of the cell assembly 2 and have their own interface devices 18, 18a. By use Of two of these potential detection devices 16, 16a, the electrical potentials energy storage devices can advantageously be detected, even if a single one of these potential detection devices 16, 16a is insufficient for the number of energy storage devices of the cell arrangement 2. Otherwise, the comments on the previous figures apply.

FIG. 20 schematically shows the energy storage device 1 according to FIG. 19 after step S13. The potential detection devices 16, 16 a are electrically connected to the energy storage devices of the cell assembly 2. Further, the carrier device 21 with the frame 40, 40 a and the

Carrier device 21 a mechanically connected to the frame 40b, 40c.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

FIG. 21 schematically shows an energy storage device 1 with 15

Energy storage devices according to Figure 6, with inserted into the cell assembly 2 frame, with a potential detection device 16 in

Punched grid construction, with a clamping device, after step S1 1 and before step S13.

The cell arrangement 2 is designed essentially in accordance with FIG. By way of example, this cell arrangement 2 or this energy storage device 15 has energy storage devices 3, 3a, 3b, 3c. The cell assembly 2 is bounded by the outer frames 40, 40b. The potential detection device 16 is formed with stamped conductor tracks, which are at least partially encapsulated by a polymer material. The potential detection device 16 has a first one Section 22 with two of these contact devices 17, 17 a and with a plurality of receiving elements 24 on.

The interface device 18 is connected to the first section 22 and to the carrier device. The stamped tracks are with the

Interface device 18 electrically, in particular cohesively, connected.

The potential detection device 16 has 14 separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 23i and as many separation points 25 as well. Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 23i has one of these

Contact means 17b and two of these receiving elements.

Preferably, the separation points 25 are formed as perforations. The metallic interconnects extend through the webs between the recesses of the perforations.

Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 231 has one of these contact means 17b and two of these receiving elements.

The contact means 17, 7a, 17b are formed as metallic contact surfaces and preferably formed integrally with the stamped conductor tracks. The contact devices 17, 17a, 17b extend from the carrier device 21 or from its polymer material substantially perpendicular to the main extension direction of the carrier device 21.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction. FIG. 22 schematically shows the energy storage device 1 according to FIG. 21 after step S13. The first portion 22 is mechanically connected to one of the outer frames 40. The detachable portion 231 is mechanically connected to the other of the outer frames 40b.

The contact devices 17, 17a, 17b are electrically connected to current conductors 1 1, 1 1 b of the cell arrangement 2, in particular to their contacting sections 13, 13 b, in particular by material bonding.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 23 shows schematically an enlarged detail

Energy storage device according to FIG. 22.

The contact device 17 is electrically, in particular cohesively, connected to the current conductor 1 1 of the first energy storage device 3. The contact device 17a is electrically, in particular materially, connected to one of the current conductor 1 1 a of the second energy storage device, wherein the second energy storage device in the cell assembly 2 adjacent to the first energy storage device 3 is arranged. The contact device 17b is electrically, in particular materially, connected to a current conductor 1 1 d of the third energy storage device, wherein the third

Energy storage device is arranged in the cell assembly 2 adjacent to the second energy storage device.

The second current conductor 1 1 a of the first energy storage device 3 is electrically, in particular cohesively, with the current conductor 1 1 a of the second Energy storage device connected and has the same electrical potential.

The current conductor 1 1 d of the third energy storage device is electrically, in particular cohesively, connected to the second current collector 1 1 c of the second energy storage device and has the same electrical potential.

The first portion 22 is mechanically connected to the outer frame 40 of the cell assembly 2.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 24 schematically shows a potential detection device 16 according to FIG. 21 in a punched grid construction with a plurality of separable sections 23, 23 a, 23 b for detecting the electrical potentials of 15 energy storage devices.

The potential detection device 16 is formed with stamped conductor tracks, which are at least partially encapsulated by a polymer material. The potential detection device 16 has a first one

Section 22 with two of these contact devices 17, 17 a and with a plurality of receiving elements 24 on.

The potential detection device 16 has, for example, a total of 16

Contact devices 7, 17 a, 17 b, which extend substantially perpendicular to the main extension direction of the support means 21. The

Potential detecting device 16 has 14 separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 23i and as many separating points 25. Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 23i has one of these

Contact means 17b and two of these receiving elements.

Preferably, the separation points 25 are formed as perforations. The Metallic conductor tracks extend through the webs between the recesses of the perforations. Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23t, 23j, 23h, 23k, 231 has one of these contact means 17b and two of these receiving elements. The contact devices 17, 17 a, 17 b are formed as metallic contact surfaces and preferably formed integrally with the stamped conductor tracks. The contact devices 17, 17a, 17b extend from the carrier device 21 or from its polymer material substantially perpendicular to the main extension direction of the carrier device 21. The

Contact devices 17, 17a, 17b are connected via punched conductor tracks 20, 20a to the interface device 18. It can be seen that the number of tracks 20, 20a increases with increasing distance from the

Interface device 18 decreases. The stamped conductor tracks 20, 20a are at least partially encapsulated with a polymer material. The carrier device 21 has a plurality of receiving elements 24, 24a for

Attachment to the cell assembly or frame between adjacent energy storage devices on. Preferably, the support means has a thickness of between 1 to 4 mm, more preferably about 3.5 mm.

Interface device 18 electrically, in particular cohesively, connected. The interface device 18 is designed as a connector.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 25 shows schematically an enlarged detail of FIG

Potential detection device 16 according to FIG. 24. The potential detection device 16 is formed with stamped conductor tracks, which are at least partially encapsulated by a polymer material. The potential detection device 16 has a first section 22 with two of these contact devices 17, 17 a and with a plurality of receiving elements 24.

The potential detection device 16 has a total of 16 contact devices 17, 17 a, 17 b, which are substantially perpendicular to

Main extension direction of the support means 21 extend. The

Potential detecting device 16 has 14 separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 231, and as many

Separation points 25 on. Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 231 has one of these

Contact means 17b and two of these receiving elements.

Preferably, the separation points 25 are formed as perforations. The metallic tracks extend through the webs between the

Recesses of the perforations. Each of these separable portions 23, 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23h, 23k, 231 has one of these contact means 17b and two of these receiving elements.

The contact devices 17, 17 a, 17 b are formed as metallic contact surfaces and preferably formed integrally with the stamped conductor tracks. The contact devices 17, 17a, 17b extend from the carrier device 21 or from its polymer material substantially perpendicular to the main extension direction of the carrier device 21. The

Interface device 18 decreases. The stamped conductor tracks 20, 20a are at least partially encapsulated with a polymer material. The carrier device 21 has a plurality of receiving elements 24, 24a for attachment to the cell arrangement or with frames between adjacent energy storage devices.

Interface device 18 electrically, in particular cohesively, connected.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction. FIG. 26 schematically shows the potential detection device according to FIG. 24, before (above) and after (below) step S15.

The potential detection device 16 is formed in a stamped grid construction with a first section 22, 14 separable sections 23 and 14 separating points 25. Along each of the separating points, one of these separable sections can be separated from the rest of the carrier device 21. The first section has two of these contact devices 17, 17a as well

Receiving elements 24. Each of the separable section 23 has two of these contact devices and two of these receiving elements 21.

Prior to step S15, the potential detection device 16 is prepared by way of example for detecting the electrical potentials of 15 energy storage devices. After step S15, the potential detection device 16a is exemplary for detecting the electric potentials of seven

Energy storage devices designed. After step S 15, the

Potential detecting device 16a six of these separable portions 23e.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction. Figure 27 shows schematically an energy storage device 1, whose

Cell arrangement 2 has seven energy storage devices 3 according to FIG. 6, inserted frames 40 and a tensioning device 43, as well as a cut-to-length potential detection device 16 in a punched grid construction, after step S 15, before step S 13.

The cell assembly 2 is formed substantially in accordance with FIG. 17. By way of example, this cell arrangement 2 or this energy storage device 1 has seven energy storage devices 3, 3a, 3b, 3c.

The cut-to-length potential detection device 16 is formed substantially in accordance with the potential detection device 16a of FIG. 26 and has six of these separable portions 23.

Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction. FIG. 28 schematically shows the energy storage device 1 according to FIG. 27 after step S 13, in particular after step S14.

The contact devices 17 of the potential detection device 16 are each electrically connected to current conductors 1 1 or their contacting sections 13, in particular by material bonding. The carrier device 21 is connected to the outer frame 40, 40 b of

Cell assembly 2 mechanically connected. Preferably, the

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Energy storage devices of the cell array, particularly preferably in series connection of the energy storage devices. Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 29 schematically shows an energy storage device 1 with 31

Energy storage devices and two of these

Potential-detecting devices 16, 16a in a punched grid construction, before step S13.

The cell arrangement 2 substantially corresponds to the cell arrangement according to FIG. 17, but has by way of example 31 energy storage devices according to FIG. The potential detection devices 16, 16a are substantially

formed in accordance with FIG. 24. The potential detection devices 16, 16a are each configured with 16 contact devices 17, 17a for detecting the electrical potentials of a part of the energy storage devices of the cell arrangement 2 and have their own interface devices 18, 18a. By using two of these

Potential detection devices 16, 16a can advantageously be detected, the electrical potentials energy storage devices, even if a single of these potential detection devices 16, 16a for the number of energy storage devices of the cell assembly 2 is insufficient. Incidentally, the comments on the previous figures below

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 30 schematically shows the energy storage device 1 according to FIG. 29 after step S 13. The potential detection devices 16, 16 a are electrically connected to the energy storage devices of the cell arrangement 2. Further, the carrier device 21 with the frame 40, 40 a and the

Carrier device 21 a mechanically connected to the frame 40b, 40c. Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

Considering the specifics of the execution of the

Potential detection device 16 in punched grid construction.

FIG. 31 shows a flow chart for a live drive in accordance with the third aspect of the invention. In step S1, the support means is preferably provided in FIG

Foil construction or formed with several punched metal strips.

Preferably, the carrier device has at least one of these separable sections. Preferably, the carrier device has at least one or more of these receiving elements. During step S2, the connection takes place, in particular depending on the

Type of interface device, cohesively, in particular by gluing, or non-positively, in particular by clamping the carrier device in the interface device.

During step S3, prepared contact devices or metallic contact surfaces can be connected to a lateral surface of the carrier device, in particular materially bonded. If necessary, step S3 must be carried out several times in accordance with the number of contact devices. During step S3, a recess or window may be created in a polymeric material and adjacent to the contactor. During step S4, an electrical connection between existing interconnects and the interface device or their

Interface elements are produced. After performing steps S1 to S4, the state E1 is reached, the potential detecting device having a predetermined number of times

Contact devices is made.

FIG. 32 shows a flowchart for a preferred development of the production method according to FIG. 31.

The state E1 is followed by the step S5, whereupon the state E2 is reached.

In state E2, the potential detection device is manufactured with a predetermined number of separable portions. This preferred development offers the particular advantage that the potential detection device is a modular system for packaging energy storage devices with different numbers of energy storage devices is suitable.

FIG. 33 shows a flowchart for a further preferred development of the production method according to FIG. 31.

In this case, step S3 occurs before step S1, wherein the contact devices or contact surfaces are integrally formed on the conductor tracks before the carrier device is provided. In this development, step S2 can take place substantially simultaneously with step S4.

Preferably, the step S5 connects to the state E1, whereupon the state E2 is reached. This preferred development offers the particular advantage that the cost of manufacturing is reduced. This preferred development offers the particular advantage that the handling of the contact devices during manufacture is simplified. FIG. 34 shows a flowchart for a part of the method according to the fourth aspect of the invention.

With step S1 1, an arrangement of the energy storage devices is generated, the so-called cell array, preferably with several, more preferably with N + 1, frame, which between any two of these

at least a first current conductor of a first this

accessible.

Preferably, the energy storage devices are also mechanically connected to the cell assembly by means of the tensioning device during step S1 1. Particularly preferably, the cell arrangement terminates in the stacking direction with outer frames, whereupon the cell arrangement is mechanically more stable During step S12, which depends on the number of

Stromableitern the outer energy storage devices of the cell assembly, the electrical voltage of the cell assembly is tapped.

During step S13, which depends on the number of

Contact facilities must be performed several times, is the

Potential detection device for providing the electrical potentials of the energy storage devices electrically connected to the current conductors. If the energy storage device N has energy storage devices, then step S13 is to be performed N + 1 times.

When the number of contact devices for the number of

Energy storage devices is insufficient, then two of these

Potential detection devices for the production of

Energy storage device can be used. If the number of

An order of steps S 13 and S 14 is not mandatory. Following the steps S 13 and S 14, the state E3 is reached, wherein the potentials of the energy storage devices can be detected by means of the potential detection device.

Preferably, the electrical contacting of the

Energy storage device via the current conductors of the outer

FIG. 35 shows a flowchart for a preferred development of the production method according to FIG. 34. According to this preferred embodiment of the production method, step S15 is executed at least once after reaching state E3 and state E4 is reached. Step S15 reduces the number of contact devices and matches the number N of energy storage devices. Depending on the number N of the energy storage devices, step S5 may need to be performed several times. With step S5, the

Shortened carrier device and the length of the carrier device adapted to the length of the cell assembly. With step S 15, the number of

Contact devices of the potential detection device adapted to the number of energy storage devices. Preferably, step S16 follows state E4. At step S16 are printed conductors, which after separating one of these separable

Sections may be exposed, electrically isolated from the environment. Subsequently, in particular the measurement accuracy is improved.

Then, in particular, the reliability of

Energy storage device improved. REFERENCE CHARACTERS

1 energy storage device

cell arrangement

, 3a, 3b electrochemical energy storage device

11, 1 1 a current collector

13, 13a contacting section of a Stromableiters

16 potential detection device

17, 17a contact device of the potential detection device 8 interface device

9, 19a contact elements of the interface device

0, 20a trace between contact surface and contact elements 1 carrier device

2 first section of the support means

3, 23a separable portion of the support means

4, 24a receiving element of the carrier device

5, 25a separation point of the carrier device

6, 26a web of the carrier device

7 second recess of the carrier device

0 polymer film, polymer material

8 evaluation device 40, 40a frame

41, 41 a frame element

42 recording room

43 clamping device

44 connecting means

d1 distance between two of the contact devices k1 first edge length of one of the energy storage devices N number of energy storage devices

q1 first cross-sectional area of the carrier device

q2 second cross-sectional area of the carrier device

r main direction of extension

Claims

P a n t a n s p r e c h e

Potential detection device (16) for detecting at least two electrical potentials of an energy storage device (1), wherein the energy storage device (1) at least two, connected in series, electrochemical energy storage devices (3, 3a), wherein the energy storage devices (3, 3a) each one first edge length k1 and two current conductors each (1 1, 1 1a)

have different electrical polarity, wherein the

Stromableitern (1 1, 1 1a) the electrical voltage of the

Energy storage device (3, 3a) can be tapped, wherein the

A potential detection device (16) comprises: a support means (21) extending from a first end having a substantially rectangular second cross-sectional area q2 along a main extension direction which

is formed in particular with a lanyard, at least three electrical contact means (17, 17a), which are connected to the carrier device (21), which are each configured, with one of the current conductors (1 1, 11 a) electrically, in particular materially, connected to which are used to detect the electrical potential of the connected Stromableiters (1 1, 1 1 a), an interface device (18) which is connected to the first end, which is electrically connectable to the contact means (17, 17 a), which at least three interface elements (19, 19a), wherein the electrical potential of one of the contact devices (17, 17a) can be tapped off at at least one of the interface elements (19, 19a), at least three conductor tracks (20, 20a), which are connected to the carrier device (21), which extend at least in sections along the carrier device (21), which are respectively configured, one of these contact devices (17, 17a) with one of

Electrically connect at least two of the contact means (17, 17a) to each other at a predetermined distance d1 along the

Support means (21) are arranged, wherein the predetermined distance d1 is adapted to the first edge length k1, wherein preferably at least two of the contact means (17, 17a) to each other with a predetermined distance d1 along the

Carrier device (21) are arranged, wherein the predetermined distance d1 to the distance between a current conductor (1 1) of a first of these energy storage devices (3) and a current collector (1 1 a) of an adjacent, with this first energy storage device (3) interconnected second this energy storage devices (3a) is adjusted.

A potential detecting device (16) according to claim 1, wherein said support means (21) comprises a first portion (22), and at least one separable portion (23, 23a), said first portion (22) and said separable portion (23, 23a) respectively at least one of said contact means (17, 17a), said first portion (22) being disposed between said first end and said separable portion (23, 23a),

preferably the first portion (22) and the separable

Section (23, 23 a) each have at least one receiving element (24, 24 a) for receiving an independent mechanical

Connecting means (44, 44a), wherein the connecting means (44, 44a) for the mechanical connection of the support means (21) with the

Energy storage device (1) is configured.

3. potential detection device (16) according to one of the preceding claims, wherein the contact means (17, 17a) are each formed with a metallic contact surface, wherein preferably the contact surfaces on or in the same lateral surface of the support means

(21) are arranged.

4. Potential detection device (16) according to one of the preceding claims, wherein the support means (21) at least one separation point (25, 25a), wherein the separation point (25, 25a) between two of these separable portions (23, 23a) or between the first section

(22) and the adjacent separable portion (23, 23 a) is arranged, wherein the separation point (25, 25 a) has a first cross-sectional area q 1, which is smaller than the second cross-sectional area q 2, wherein preferably the first separation point (25, 25 a) at least two webs (26, 26a) is formed, which extend substantially along the main extension direction r, wherein at least one of the conductor tracks (20, 20a) along one of these webs (26, 26a) is guided, wherein particularly preferably the at least two webs (26, 26a) are spaced by a second recess (27, 27a).

5. potential detection device (16) according to any one of the preceding claims, wherein the support means (21) two or more of these separable portions (23, 23a) and a plurality of separation points (25, 25a), in particular according to the number of separable portions (23, 23a) , having.

6. Potential detection device according to one of the preceding claims, comprising at least one temperature sensor, which detects a temperature of one of the energy storage devices (3, 3a),

in particular the temperature of one of these current conductors (1 1, 1 1a), is used, which is electrically connected to the interface device (18), which is preferably thermally conductive with one of the contact means (17, 17 a) is connectable.

7. A potential detection device (16) according to one of the preceding claims, wherein the number of conductor tracks (20, 20a) which are guided by a first one of the separable sections (23, 23a) depends on the number M of separable sections (23, 23). 23a) which follow the first separable portion (23, 23a) along the main extension direction,

wherein preferably M + 1 strip conductors (20, 20a) are guided through the first separable section (23, 23a).

8. Potential detection device (16) according to one of the preceding

Claims, wherein the interface device (18) is formed with a, in particular electromagnetic, communication element, or

wherein the interface elements (19, 19a) of the interface device (18) are parts of a connector.

9. Potential detection device (16) according to one of the preceding

Claims, having an evaluation device (38) which is electrically connectable to at least two of these contact devices (17, 17a) which is designed to evaluate at least two detected electrical potentials to an electrical voltage of one of the energy storage devices (3, 3a),

wherein preferably the evaluation device (38) from at least one of the energy storage devices (3, 3a) can be supplied with energy.

10. Potential detection device (16) according to one of the preceding

Claims, wherein the carrier device (21), in particular its

Carrier tape, with at least one, in particular film-like,

in particular band-shaped, polymer material and / or with at least one metal strip, preferably with at least one stamped grid, is formed.

1 1. An energy storage device (1) for providing electrical energy, with a potential detection device (16) according to one of previous claims, with at least two, preferably N, of these energy storage devices (3, 3a), wherein at least one first current conductor (1 1), in particular first polarity, the first of these energy storage devices (3) with a second current collector (1 1 a), in particular second polarity, the second of these energy storage devices (3a), in particular cohesively, is connectable, at least one of these contact means (17, 17a) with the first current conductor (1 1) or the second current conductor (1 1 a), in particular cohesively, is connectable, Preferably, the carrier device is cut to length such that the number of contact devices (17, 17 a) the number of

Energy storage devices (3, 3a) exceeds by 1, preferably at least one of the energy storage devices (3, 3a) has a, in particular substantially rectangular, first lateral surface, wherein at least one of the current conductors (1 1, 1 1 a) extends from this lateral surface, and this current conductor (11, 11a) has a contacting section (13, 13a) which extends substantially parallel to the first lateral surface, in particular in the direction of an adjacent energy storage device (3, 3a).

12. Energy storage device (1) according to the preceding claim, with at least two frames (40, 40a), each with four

Frame elements (41, 41 a) and a substantially cuboid receiving space (42) are formed, said frame elements (41, 41a) surrounding the receiving space (42), wherein the receiving space (42) for at least partially receiving at least one of the energy storage devices (3 , 3a) is configured, at least one tensioning device (43) which is designed to urge at least two of these frames (40, 40a) against one another, in particular to connect them in a force-locking manner,

which preferably by the frame (40, 40a), in particular by each one of the frame members (41, 41 a), can be performed, wherein at least one of the current conductor (1 1, 1 1 a) one of these

Energy storage devices (3, 3a) between two of these frames (40, 40a), in particular between a first frame member (41) of the first frame (40) and a first frame member (41a) of the second frame (40a), in particular non-positively held , wherein the potential detection device (16) with at least one of these frames (40, 40a) mechanically, in particular non-positively, connectable.

13. A method for producing the potential detection device (16) according to one of claims 1 to 10, with

51 providing the carrier device (21) which is preferably formed with at least one, in particular foil-like, in particular band-shaped polymer material and / or with at least one metal strip, preferably with at least one stamped grid, preferably with at least one of these separable sections (23, 23a) .

52 connecting the interface device (18) with the

Support means (21),

53 forming at least one of these contact devices (17, 17a), in particular in or on a lateral surface of the carrier device (21), 54 connecting the contact device (17, 17 a) with the

Interface device (18), in particular with one of these interface elements (19, 19a), by means of one of these conductor tracks (20, 20a), preferably forming the conductor track (20, 20a) between one of the contact devices (17, 17a) and one of these

Interface elements (19, 19a) on or in the carrier device (21), preferably with

55 forming at least one of these separation points (25, 25a) in the

Carrier device (21), in particular between two separable sections (23, 23a) or between the first section (22) and the adjacent separable section (23, 23a).

14. A method for producing the energy storage device (1) according to

one of claims 1 1 or 12, with N this

Energy storage devices (3, 3a), with the steps

51 1 arranging a second one of said energy storage devices (3a) adjacent to a first one of said energy storage devices (3), wherein preferably one of said frames (40, 40a) is inserted between said adjacent energy storage devices (3, 3a) upon which a cell assembly (2) is formed .

512 electrical, in particular cohesive, connecting a

Stromableiters (11), in particular first polarity, the first energy storage device (3) with a current collector (11a), in particular second polarity, the adjacent second

Energy storage device (3a),

513 electrical, in particular cohesive, connecting one of these current conductors (11, 11a) to one of these contact devices (17, 17a), 514 mechanically connecting the carrier device (21) with the energy storage device (1), in particular with one of the frames (40, 40a), preferably with

Separating at least one of these separable sections (23, 23a), in particular along one of these separating locations (25, 25a), whereupon N + 1 contact devices (17, 17a) preferably remain on the carrier device (21), particularly preferably with

S16 insulating at least one of these conductor tracks (20, 20a) at one of these separation points (25, 25a), in particular after step S15.