DEVICE AND METHOD FOR PRODUCING A THIN-WALLED COMPONENT

Abstract

A device and method for producing a thin-walled component, in particular a housing film for a pouch cell, from an initial part, comprising a first coil body, an electrical circuit for providing a pulsed electrical current, a die with a support facing the first coil body for the initial part to be reshaped, the support having the shape of the component to be produced, and a first separating device by which a first partial area can be at least partially separated from a second partial area of the initial part, it being possible for the initial part to be arranged between the first coil body and the die, to be accelerated by an electromagnetic force acting between the first coil body and the initial part towards the die and thereby to be deformed by the support and to be at least partially separated by the first separating device.

Claims

1. A device for producing a thin-walled component from an initial part, comprising: a first coil body having an electrical conductor that is arranged at least in one plane, an electrical circuit for providing a pulsed electrical current, which pulsed electrical current can be applied to the electrical conductor of the first coil body, a die with a support facing the first coil body for the initial part to be reshaped, the support having an identical shape of the thin-walled component to be produced, and a first separating device (by which a first partial area can be at least partially separated from a second partial area of the initial part, wherein the initial part is first arranged between the first coil body and the die, is then accelerated by an electromagnetic force acting between the first coil body and the initial part towards the die, and is deformed by the support and at least partially separated by the first separating device.

2. The device according to claim 1, wherein the first separating device has a circumferential separating edge so that it completely surrounds the first partial area, and so that the first partial area can be detached from the second partial area.

3. The device according to claim 2, wherein the separating edge completely encloses the support.

4. The device according to claim 1, further comprising a second coil body by which the first separating device can be moved towards the die.

5. The device according to claim 1, further comprising a second coil body and a second separating device, wherein the second separating device is movable by the second coil body towards the die.

6. The device according to claim 5, wherein the second coil body completely surrounds the first coil body, wherein the electrical conductors of the first and second coil bodies are arranged in the at least in one common plane, and wherein the electrical circuit is designed so that the pulsed electrical current can be applied to the first and second coil bodies only one after the other.

7. A method for producing a thin-walled component from an initial part with a device, the device comprising a first coil body having an electrical conductor that is arranged at least in one plane, an electrical circuit for providing a pulsed electrical current, which pulsed electrical current can be applied to the electrical conductor of the first coil body, a die with a support facing the first coil body for the initial part to be reshaped, the support having an identical shape of the thin-walled component to be produced, and a first separating device by which a first partial area can be at least partially separated from a second partial area of the initial part, the method comprising the following steps: a) providing the initial part and arranging the initial part between the first coil body and the die; b) applying the pulsed electrical current to the first coil body, and generating an electromagnetic force between the first coil body and the initial part, so that the initial part is accelerated towards the die; c) reshaping the initial part, and d) at least partially separating the initial part.

8. The method according to claim 7, wherein steps c) and d) are carried out at the same time.

9. The method according to claim 7, wherein steps c) and d) are carried out with a temporal offset, such that step c) is carried out by a first pulsed electrical current and step d) is carried out by a temporally offset second pulsed electrical current.

10. A component produced at least by the device according to claim 1, wherein the component is a housing film for a pouch cell.

11. A component produced at least by the method according to claim 7, wherein the component is a housing film for a pouch cell.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The invention and the technical environment are explained in more detail below with reference to the accompanying figures. It should be pointed out that the invention is not intended to be limited by the exemplary embodiments mentioned. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and findings from the present description. In particular, it should be pointed out that the figures and in particular the proportions shown are only schematic. In the figures:

[0058] FIG. 1: shows a first embodiment variant of a device;

[0059] FIG. 2: shows a part of the device according to FIG. 1 in a side view in section;

[0060] FIG. 3: shows a second embodiment variant of a device; and

[0061] FIG. 4: shows a part of the device according to FIG. 3 in a side view in section.

[0062] Detained Description of the Invention FIG. 1 shows a first embodiment variant of a device 1. FIG. 2 shows part of the device 1 according to FIG. 1 in a side view in section. FIGS. 1 to 2 are described together below.

[0063] The device 1 comprises a first coil body 4, the electrical conductor 5 of which is arranged in a plane 6, an electrical circuit 7 for providing a pulsed electrical current which can be applied to the electrical conductor 5 of the first coil body 4, a die 8 with a support 9 facing the first coil body 4 for an initial part 3 to be reshaped, the support 9 having the shape of the component 2 to be produced, and a first separating device 10 by which a first partial area 11 can be separated from a second partial area 12 of the initial part 3.

[0064] The device 1 is designed so that the initial part 3 can be arranged between the first coil body 4 and the die 8, in particular on the die 8, and can be at least partially accelerated towards the die 8 by an electromagnetic force acting between the first coil body 4 and the initial part 3 and thereby can be deformed by the support 9 and can be severed by the first separating device 10.

[0065] The electrical circuit 7 comprises a first circuit 18 in which at least one inductor 24, a power resistor 23, a capacitor 16 and the first coil body 4 are arranged. The electrical conductor 5 of the first coil body 4 has a plurality of windings.

[0066] The pulsed electrical current provided by the electrical circuit 7 generates a magnetic field in the first coil body 4, which in turn induces an electrical current in the initial part 3.

[0067] Thus, a Lorentz force, by means of which the initial part 3 is at least partially accelerated towards the die 8 or is applied to the die 8 and the support 9 for reshaping, is generated between the initial part 3 and the first coil body 4. The high speed of the initial part 3 achieved in this way enables reshaping of the initial part 3 by the die 8, that is to say the adaptation of the shape of the output part 3 to the shape of the support 9.

[0068] In addition to the reshaping of the starting material 3, a second partial area 12 is also detached from a first partial area 11. The detachment includes cutting into the initial part 3, this cut being arranged at a distance from an outer edge of the initial part 3. The detachment here comprises the removal of the second partial area 12 designed as a border area.

[0069] The first separating device 10 has a circumferential separating edge 13, so that the separating edge 13 completely surrounds the first partial area 11 and the first partial area 11 can be detached from the second partial area 12. The separating edge 13 completely surrounds the support 9. The first partial area 11 forms the component 2, the second partial area 12 being disposed of as material residue. For this purpose, the device 1 comprises a material chute 20, by which the detached second partial area 12 is automatically removed from the device 1 under the influence of gravity 21.

[0070] The separating edge 13 of the first separating device 10 is arranged in a stationary manner on the die 8. The initial part 3 is pressed against the die 8 as a result of the pulsed electrical current, the initial part 3 also being pressed against the separating edge 13 and the separating process thus taking place. This means that the reshaping and separation can take place at the same time.

[0071] The electrical circuit 7 is activated via the control unit 22.

[0072] FIG. 3 shows a second embodiment variant of a device 1. FIG. 4 shows part of the device 1 according to FIG. 3 in a side view in section. FIGS. 3 to 4 are described together below. Reference is made to the statements relating to FIGS. 1 and 2.

[0073] In contrast to the first embodiment variant, the device 1 here comprises an electrical circuit 7 with an additional second circuit 19. A second coil body 14 is arranged in the second circuit 19, it being possible to switch back and forth between the first circuit 18 and the second circuit 19 via a switch 17.

[0074] The device 1 thus additionally comprises a second coil body 14 and a second separating device 15, the second separating device 15 being movable by the second coil body 14 towards the die 8. The first separating device 10 is arranged on the die 8.

[0075] The separating devices 10, 15 are arranged such that the movably arranged second separating device 15 and the first separating device 10 arranged on the die 8 interact with their separating edges 13 and thereby form a common cutting line on the initial part 3.

[0076] The second coil body 14 completely surrounds the first coil body 4 and the electrical conductors 5 of the coil bodies 4, 14 are arranged in the common plane 6, the electrical circuit 7 being designed so that the pulsed electrical current can be applied to the coil bodies 4, 14 only one after the other. The electrical circuit 7 is thus constructed very simply and cost-effectively, providing for switching alternately between the first coil body 4 and the second coil body 14.

LIST OF REFERENCE SIGNS

[0077] 1 device [0078] 2 component [0079] 3 initial part [0080] 4 first coil body [0081] 5 conductor [0082] 6 plane [0083] 7 circuit [0084] 8 die [0085] 9 support [0086] 10 first separating device [0087] 11 first partial area [0088] 12 second partial area [0089] 13 separating edge [0090] 14 second coil body [0091] 15 second separating device [0092] 16 capacitor [0093] 17 switch [0094] 18 first circuit [0095] 19 second circuit [0096] 20 material chute [0097] 21 gravity [0098] 22 control unit [0099] 23 power resistor [0100] 24 inductor