Lock for rechargeable battery

Abstract

A system having a power tool and at least one rechargeable battery () as energy supply to the power tool, the at least one rechargeable battery having at least one energy storage element, the system comprising a locking device, the locking device has at least one locking element for releasably connecting the at least one rechargeable battery to the power tool. The locking device comprises at least one actuator for reversibly moving the at least one locking element from a first position, in which the rechargeable battery is movable relative to the power tool, to a second position, in which the rechargeable battery is movable relative to the power tool. The rechargeable battery is immovably connected to the power tool.

Description

Technical Field

[0001] The invention relates to a system having a power tool and at least one rechargeable battery as an energy supply for the power tool, the at least one rechargeable battery having at least one energy storage element, the system comprising a locking device having at least one locking element for releasably connecting the at least one rechargeable battery to the power tool.

[0002] Furthermore, the invention relates to a rechargeable battery for use in a system with a power tool.

[0003] Furthermore, the invention relates to a power tool for use in a system having at least one rechargeable battery.

[0004] Furthermore, the present invention relates to a method for controlling a locking device in a system comprising a power tool and at least one rechargeable battery as an energy supply for the power tool, wherein the locking device comprises at least one actuator for reversibly moving at least one locking element from a first position to a second position or a third position. Background Art

[0005] Rechargeable batteries are well known in the prior art as energy supplies for power tools. These rechargeable batteries include a plurality of energy storage elements (also referred to as energy storage cells or battery cells) that are used and designed to receive, store and deliver electrical energy. Receiving electrical energy into an energy storage element may also be referred to as charging. Delivering electrical energy from an energy storage element may also be referred to as discharging.

[0006] A problem when using rechargeable batteries in power tools is the undesired or unavoidable relative movement between the rechargeable battery and the power tool. The relative movement between the rechargeable battery and the power tool may cause contact wear and excessive heating of the contacts. As a result, the transfer of electrical energy from the rechargeable battery to the power tool may be impaired or reduced. Summary of the invention

[0007] SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems.

[0008] This object is likewise achieved by the subject-matter of claims 1, 5, 6 and 9. Further advantageous embodiments of the invention are described in the dependent claims.

[0009] In particular, the object is achieved by a system having a power tool and at least one rechargeable battery as an energy supply for the power tool, the at least one rechargeable battery having at least one energy storage element, the system comprising a locking device having at least one locking element for releasably connecting the at least one rechargeable battery to the power tool.

[0010] According to the present invention, it is proposed that the locking device comprises at least one actuator for reversibly moving the at least one locking element from a first position to a second position, wherein in the first position the rechargeable battery can be moved relative to the power tool, and in the second position the rechargeable battery is immovably connected to the power tool.

[0011] The actuator can here in particular be configured in the form of an electromechanical actuator. Alternatively, the actuator can also be configured as a hydraulic or pneumatic actuator.

[0012] The term "immovably" in relation to the second position means that relative movement between the rechargeable battery and the power tool is restricted to a minimum, or relative movement between the rechargeable battery and the power tool cannot occur.

[0013] According to an advantageous exemplary embodiment, it is possible that the at least one actuator can be activated via an activation device. The activation device can be operated by a user of the power tool via an input panel. The input panel can be configured as at least one switch on an outer wall of the housing of the rechargeable battery.

[0014] According to another advantageous exemplary embodiment, it is possible that the at least one actuator can be activated via at least one sensor. The at least one sensor can be an acceleration sensor, a movement sensor, a displacement sensor, a position sensor or the like.

[0015] According to a further advantageous exemplary embodiment, it is possible that the locking device comprises at least one drive for the translational movement of the at least one locking element. The drive here can be configured in the form of a rotation drive or a linear drive.

[0016] The rotary drive can be configured here with at least one cam.

[0017] The linear drive is used in particular to generate a translational movement and can be configured, for example, in the form of a lifting device, a winch, a rack, a rigid chain, a traction drive, a cam plate, a piezo motor, a folding spindle, a threaded spindle, an electric cylinder, a ball screw or a roller screw. The roller screw can be configured here in particular as a roller screw with roller recirculation or as a planetary roller screw.

[0018] Furthermore, the linear actuator can also be configured in the form of a hydraulic cylinder or a pneumatic cylinder.

[0019] It is also possible that the linear drive is also electromechanical in design. The electromechanical linear drive can be configured here, for example, in the form of a linear motor with an electric operating principle or as a linear actuator. The linear actuator can be configured here with a piezoelectric, electrostatic, electromagnetic, magnetostrictive or thermoelectric operating principle.

[0020] According to an advantageous exemplary embodiment, it is possible to include at least one acceleration sensor for detecting at least one acceleration value, wherein the at least one acceleration sensor is connected to the locking device such that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery to the power tool.

[0021] The acceleration sensor may be configured in the form of a gyroscope sensor.

[0022] Furthermore, the object can be achieved by a rechargeable battery for use in a system with a power tool.

[0023] According to a further advantageous exemplary embodiment, it is possible that the rechargeable battery comprises at least one acceleration sensor for detecting at least one acceleration value, wherein the at least one acceleration sensor is connected to the locking device such that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery to the power tool.

[0024] Furthermore, the object is achieved by a power tool for use in a system having at least one rechargeable battery.

[0025] According to a further advantageous exemplary embodiment, it is possible that the power tool comprises at least one acceleration sensor for detecting at least one acceleration value, wherein the at least one acceleration sensor is connected to the locking device such that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery to the power tool.

[0026] Furthermore, the object can be achieved by a method for controlling a locking device in a system, the system comprising a power tool and at least one rechargeable battery as an energy supply for the power tool, wherein the locking device comprises at least one actuator for reversibly moving at least one locking element from a first position to a second position or a third position.

[0027] According to the present invention, it is proposed that the method comprises the following steps:

[0028] - detecting at least one acceleration value via an acceleration sensor;

[0029] - comparing at least one detected acceleration value with at least one first threshold value and a second threshold value;

[0030] - if the at least one detected acceleration value corresponds to the first threshold value, transmitting at least one first signal to the actuator to switch the locking element from the first position to the second position; and

[0031] - if the at least one detected acceleration value corresponds to the second threshold value, transmitting at least one second signal to the actuator to switch the locking element from the first position to the third position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Further advantages can be found in the following description of the drawings. Particularly preferred exemplary embodiments of the present invention are shown in the drawings. The drawings, the description and the claims include many combined features. Those skilled in the art will also conveniently consider these features individually and combine these features to form other reasonable combinations.

[0033] In the drawings, the same and similar components are denoted by the same reference numerals.

[0034] In the attached picture:

[0035] Figure 1 shows a side view of a system according to the present invention, the system comprising a power tool and a rechargeable battery;

[0036] Figure 2 shows a side view of a rechargeable battery according to the invention, wherein a schematically illustrated locking device is in a first position;

[0037] Figure 3 shows a side view of a rechargeable battery according to the invention, wherein the schematically illustrated locking device is in a second position;

[0038] Figure 4 shows a side view of a rechargeable battery according to the invention, wherein the locking device according to the first exemplary embodiment is in a first position;

[0039] Figure 5 shows a side view of a rechargeable battery according to the invention, wherein the locking device according to the first exemplary embodiment is in a second position;

[0040] Figure 6 shows a side view of a rechargeable battery according to the invention, wherein a locking device according to a second exemplary embodiment is in a first position; and

[0041] Figure 7 A side view of a rechargeable battery according to the invention is shown, wherein a locking device according to a second exemplary embodiment is in a second position. DETAILED DESCRIPTION

[0042] Figure 1A system 100 according to an exemplary embodiment is shown having a power tool 1 and a rechargeable battery 11 .

[0043] In the illustrated embodiment, the power tool 1 is configured as a power drill. Alternatively, the power tool 1 may also be configured as a power drill, a hammer drill, a saw, a grinder, or the like.

[0044] like Figure 1 As indicated, a power tool 1 configured as a power drill substantially comprises a power tool housing 2 having a tool accessory 3 and a handle 4 .

[0045] The tool accessory 3 is used to receive and hold a tool 5. In the current exemplary embodiment, the tool 5 is a drill bit. Alternatively, the tool 5 can also be configured as a screwdriver bit.

[0046] In particular, a drive 6, a transmission 7a, an output shaft 7b and a control unit 8 are arranged inside the power tool housing 2. The drive 6 is configured as a brushless electric motor, for example, and is used to generate torque.

[0047] The control unit 8 further comprises an acceleration sensor 14 for detecting acceleration values. The acceleration sensor 14 is used in particular to detect or measure acceleration in the event of a fall of the system 100. The acceleration values ​​detected by the acceleration sensor 14 are sent to the control unit 8 and evaluated. The control unit 8 further comprises a memory 32 in which threshold values ​​for acceleration values ​​are stored. If the acceleration sensor 14 detects an acceleration of the system 100, the value of the acceleration is evaluated with the aid of the control unit 8. For this purpose, the detected acceleration value is compared with a threshold value stored in the memory. When the threshold value is reached, a corresponding signal is emitted by the control unit 8.

[0048] The control unit 8 controls the functions and behaviors of the power tool 1 , in particular the drive 6 , in closed-loop and open-loop manner.

[0049] The handle 4 in turn comprises an activation switch 9 , an upper end 4a and a lower end 4b . The activation switch 9 is connected to the control unit 8 , such that actuation of the activation switch 9 results in activation of the driver 6 or the power tool 1 .

[0050] like Figure 1 As shown, the driver 6, the transmission 7a, the output shaft 7b and the tool accessory 3 are arranged relative to each other so that the torque generated by the driver 6 can be transmitted to the tool accessory 3 via the transmission 7a and the output shaft 7b. The torque generated by the driver 6 is finally transmitted to the tool 5 through the tool accessory 3.

[0051] Furthermore, the power tool housing 2 has an upper side 2 a , a lower side 2 b , a front end 2 c , and a rear end 2 d .

[0052] The tool accessory 3 is positioned at the front end 2c. The upper end 4a of the handle 4 is fastened to the underside 2b of the power tool housing 2 near the rear end 2d. The power tool interface 10 is positioned at the lower end 4b of the handle 4. The power tool interface 10 is used to releasably connect the power tool 1 to a rechargeable battery 11.

[0053] According to an alternative exemplary embodiment (not shown in the figures), the power tool 1 can also be configured such that it is connected to more than one rechargeable battery 11 as energy source.

[0054] The rechargeable battery 11 described in the exemplary embodiment can be used in particular as an energy storage device or electrical energy source for the power tool 1. The rechargeable battery 11 here basically includes a battery housing 12, a plurality of energy storage elements 13, a storage device 16, a battery interface 22, a locking device 15 and a control device 17. In addition, the rechargeable battery 11 includes an acceleration sensor 18 and a displacement sensor 19. The displacement sensor 19 can also be referred to as a distance sensor or a position sensor. In the current exemplary embodiment, the displacement sensor 19 is configured in the form of a strain gauge. Alternatively or in addition to the strain gauge, the displacement sensor 19 can also be configured in the form of a potential transducer, an inductive sensor, a capacitive sensor and / or an inductive sensor (for example, a differential transformer (LVDT), a transverse armature transducer, a short-circuit ring transducer, a magnetic induction displacement sensor (MDS) or an eddy current sensor).

[0055] The acceleration sensor 18 may also be referred to as an accelerometer, acceleration pickup, vibration pickup, oscillation pickup, accelerometer or G-sensor. In the current exemplary embodiment, the acceleration sensor 18 is configured as a MEMS acceleration and gyroscope sensor (MEMS=Micro Electro Mechanical System).

[0056] Alternatively or additionally, the acceleration sensor 18 may also be configured as a piezoelectric acceleration sensor, a strain gauge, a magnetic induction sensor or a Ferrari sensor.

[0057] The energy storage element 13 may also be referred to as a battery cell. According to an alternative exemplary embodiment (not shown in the figures), the rechargeable battery 11 may include only one energy storage element 13 .

[0058] The storage device 16 is positioned within the interior of the rechargeable battery housing 12 and is used to store and provide data and information.

[0059] The battery interface 22 is used to electrically or electronically connect the rechargeable battery 11 to the power tool 1 by means of the power tool interface 10. To this end, the battery interface 22 includes a positive contact P, a negative contact M and a communication contact K. The positive contact P and the negative contact M are used to transfer electrical energy from the energy storage element of the rechargeable battery 11 to the consumer device (especially the drive 6) of the power tool 1. The communication contact K is further used for communication between the control device 17 of the rechargeable battery 11 and the control unit 8 of the power tool 1. For the communication between the rechargeable battery 11 and the power tool 1, data and information are exchanged in the form of signals.

[0060] The energy storage element 13 again serves to receive, store and deliver electrical energy. As indicated in the figures, the energy storage element 13 is cylindrical in shape and is configured based on lithium-ion technology.

[0061] Alternatively, the energy storage element 13 can also be based on another suitable technology. The cylindrical shape of the energy storage element 13 is also optional, which means that any other suitable shape or geometry can also be selected. For example, in particular, it is also possible that the energy storage element 13 is implemented as a pouch cell.

[0062] In order to releasably mechanically couple the rechargeable battery 11 to the power tool 1, the system 100 includes a track device 20. As indicated in the figure, the track device 20 is positioned between the battery interface 22 and the power tool interface 10, so that the rechargeable battery 11 can slide along the track device 20 and slide onto the power tool 1 in the direction of the arrow C and be removed (slided) from the power tool 1 again in the direction of the arrow D. When the rechargeable battery 11 is coupled to the power tool 1 by means of the track device 20, the positive contact P, the negative contact M and the communication contact K of the rechargeable battery 11 are in contact with the corresponding positive contact P and the negative contact M and the communication contact K of the power tool 1. Electrical energy and electrical signals can then be transmitted from the rechargeable battery 11 to the power tool 1.

[0063] The locking device 15 serves to releasably connect the rechargeable battery 11 to the power tool 1. To this end, the locking device 15 substantially comprises an actuator 21, an enabling device 23 and a locking element 24.

[0064] exist Figures 1 to 3 , the locking device 15 according to the first embodiment is shown inside the rechargeable battery 11. Alternatively, the locking device 15 according to the first embodiment may also be positioned inside the power tool 1.

[0065] In the locking device 15 according to the first embodiment, the actuator 21 is configured and positioned such that the locking element 24 can be reversibly moved from the first position to the second position by means of the actuator 21. Figure 1 and Figure 2In FIG, the locking element 24 is shown in the first position. Figure 3 , the locking element 24 is shown in the second position.

[0066] like Figure 1 and Figure 2 As indicated, the actuator 21 , the enabling device 23 and the locking element 24 are arranged relative to each other and are connected to each other such that a corresponding signal can be sent to the actuator 21 via the enabling device 23 .

[0067] In the current exemplary embodiment, the enabling device 23 is configured as an input device having an actuation switch. One or more actuation switches can be provided here. By actuating the actuation switch, a corresponding signal is emitted.

[0068] After receiving the predetermined signal, the actuator 21 moves the locking element 24. The actuator 21 can move the locking element 24 in the direction A or B by the entire distance WS or only a portion of the distance. In addition, the actuator 21 can move the locking element 24 incrementally in the same direction A or B, or the actuator 21 moves the locking element 24 in a first direction (e.g., direction A) and then in the opposite direction (e.g., direction B).

[0069] exist Figure 2 , the locking element 24 is in the first position, wherein the locking element 24 is moved by the actuator 21 over the entire distance WS in the direction A and protrudes into a correspondingly configured recess 25 in the power tool interface 10. Since the locking element 24 protrudes into the recess 25 of the power tool interface 10, the rechargeable battery 11 cannot move along the track device 20 and relative to the power tool 1 in the direction D. The rechargeable battery 11 is thus prevented from moving relative to the power tool 1 and is securely connected to the power tool 1.

[0070] In order to release or remove the rechargeable battery 11 from the power tool 1, a corresponding signal is sent by the enabling device 23 to the actuator 21. In order to send a corresponding signal, the actuation switch 9 is pressed again. After receiving the signal, the actuator 21 moves the locking element 24 in the direction B over the entire distance WS, so that the locking element 24 no longer protrudes into the recess 25 of the power tool interface 10. As a result, the rechargeable battery 11 is no longer blocked from moving along the rail device 20 and relative to the power tool 1, so that the rechargeable battery 11 can slide from the power tool 1 in the direction D.

[0071] exist Figures 4 to 5 , the locking device 15 according to the second embodiment is shown inside the rechargeable battery 11. Alternatively, the locking device 15 according to the second embodiment may also be positioned inside the power tool 1.

[0072] The actuator 21 according to the second embodiment is configured in the form of a linear drive. The linear drive here essentially comprises a rack 26 and a worm gear shaft 27. The rack 26 and the worm gear shaft 27 are positioned or arranged relative to each other here so that the rack 26 can be moved by rotating the worm gear shaft 27 around the longitudinal axis. If the worm gear shaft 27 is rotated in a first rotational direction R, the rack 26 is moved in a direction D. By rotating the worm gear shaft 27 in a second rotational direction R', the rack 26 is moved in a direction C. Figure 4 and Figure 5 As shown, the worm gear shaft 27 is connected to the control device 17. The control device 17 is in turn connected to the enabling device 23. Actuation of the enabling device 23 causes a signal to be sent to the control device 17 and ultimately to the actuator 21. The rack 26 is connected by one end to the locking element 24, so that if the rack 26 moves in the direction D, the locking element 24 slides along the ramp of the wedge-shaped element 28. The upper end of the locking element 24 is thus moved in the direction A and into the corresponding recess 25 in the power tool interface 10, see Figure 4 If the locking element 24 is fully inserted into the recess 25, a relative movement between the rechargeable battery 11 and the power tool 1 is prevented. If the worm shaft 27 is rotated in the direction of rotation R', the rack 26 moves in the direction C. The locking element 24 is thus moved downward along the ramp in the direction B and is thus completely moved out of the recess 25. With the aid of the enabling device 23, the rack 26 can be moved in repeated increments in the direction C or in repeated increments in the direction D.

[0073] exist Figure 6 and Figure 7 In FIG. 1 , the locking device 15 according to the third embodiment is shown within the rechargeable battery 11. Alternatively, the locking device 15 according to the third embodiment may also be positioned within the power tool 1.

[0074] The actuator 21 according to the third embodiment is also configured in the form of a linear drive. However, the linear drive according to the third embodiment is configured with an electric operating principle and basically includes a magnetic push rod 29 and a coil 30. The coil 30 is connected to the control device 17 so that electrical energy can be conducted through the coil 30 so that the magnetic push rod 29 moves in the direction C or D. One end of the push rod 29 is connected to one end of the locking element 24. The locking element 24 is mounted to be pivotable around a pivot point 31 so that if the push rod 29 moves in the direction C, the locking element 24 pivots in the rotation direction S.

[0075] If the push rod 29 is moved in the direction D, the locking element 24 is pivoted in the rotational direction S'. Figure 6 and Figure 7As can be seen in FIG. 1 , if the push rod 29 is rotated in direction C and the locking element 24 is rotated in the rotation direction S, one end of the pivotable locking element 24 moves in direction A and moves into the recess 25 in the power tool interface 10, see Figure 6 Then, the rechargeable battery 11 is firmly connected to the power tool 1 so that relative movement between the rechargeable battery 11 and the power tool 1 is prevented.

[0076] If the push rod 29 is moved in the direction C, the locking element 24 is pivoted in the rotational direction S. Figure 6 and Figure 7 As can be seen in FIG. 1 , one end of the pivotable locking element 24 moves in direction B and moves out of the recess 25 in the power tool interface 10, see Figure 7 Then, the rechargeable battery 11 is no longer firmly connected to the power tool 1, so that the rechargeable battery 11 and the power tool 1 can be separated from each other.

[0077] The acceleration sensor 18 of the rechargeable battery 11 is connected to the control device 17 so that the acceleration value detected by the acceleration sensor 18 can be sent to the control device 17. The threshold or limit value of the acceleration is stored in the storage device 16. If the detected acceleration value reaches a predetermined threshold value, the control device 17 sends a signal to the actuator 21 so that the locking element 24 is further pushed into the corresponding recess 25 of the power tool interface 10. The rechargeable battery 11 is thus even more securely connected to the power tool 1.

[0078] The displacement sensor 19 is positioned on the upper side 33 of the battery housing 12. If the rechargeable battery 11 is connected to the power tool 1, the displacement sensor 19 is positioned between the rechargeable battery 11 and the power tool 1 so that the displacement between the rechargeable battery 11 and the power tool 1 can be detected as a displacement value (for example, in millimeters (mm)). The threshold or limit value of the displacement between the rechargeable battery 11 and the power tool 1 is stored in the storage device 16. If the detected displacement value reaches a predetermined threshold value, the control device 17 sends a signal to the actuator 21 so that the locking element 24 is further pushed into the corresponding recess 25 of the power tool interface 10. The rechargeable battery 11 is thus even more securely connected to the power tool 1.

[0079] Furthermore, the displacement sensor 19 can be used to activate the actuator 21 and thus the locking element 24 if the rechargeable battery 11 adopts a certain position relative to the power tool 1. In other words: if the rechargeable battery 11 is completely slid onto the rail device 20 and has adopted its correct position or arrangement relative to the power tool 1, this can be detected by the displacement sensor 19.

[0080] As in Figures 1 to 3, the actuator 21 is also connected to the control unit 8 via a line 34, so that the signal can be received by the control unit 8. In the event of a sudden and relatively high acceleration of the system 100, the value of the acceleration (i.e. the acceleration value) is detected by means of the acceleration sensor 14 of the power tool 1. In the control unit 8 of the power tool 1, the detected acceleration value is compared with a threshold value stored in a memory of the control unit 8. If it can be determined by the comparison that the detected acceleration value has reached the predetermined threshold value, the control unit 8 sends a corresponding signal to the actuator 21 of the locking device 15 via the line 34. Due to the received signal, the actuator 21 causes the locking element 24 to move further in the direction A, so that the rechargeable battery 11 is pushed further into the rail device 20 and is thus also more firmly connected to the power tool 1. As a result, a relative movement between the rechargeable battery 11 and the power tool 1 is prevented.

[0081] Furthermore, the acceleration acting on the power tool 1 is compared with the acceleration acting on the rechargeable battery 11. For this purpose, the acceleration value detected by the acceleration sensor 14 of the power tool 1 is compared with the acceleration value detected by the acceleration sensor 18 of the rechargeable battery 11. The acceleration value of the power tool 1 is sent as a signal via the line 34 to the control device 17 of the rechargeable battery 11. The control device 17 likewise receives the acceleration value of the acceleration sensor 18 of the rechargeable battery 11. By comparing the acceleration values ​​of the rechargeable battery 11 and the power tool 1, it can be determined whether the difference between the acceleration values ​​detected in each case corresponds to a predetermined threshold value or limit value stored in the storage device 16. If the determined difference corresponds to a predetermined threshold value or limit value, this means that the power tool 1 and the rechargeable battery 11 are subjected to too large different accelerations (for example, in the form of vibrations), which can lead to damage. As a result, the control device 17 sends a signal to the actuator 21, which causes the locking element 24 to be pushed further and with greater force into the recess 25 of the power tool interface 10. Therefore, relative movement and different accelerations between the rechargeable battery 11 and the power tool 1 can be offset.

[0082] According to another exemplary embodiment, a voltage measuring device 35 is included in the rechargeable battery 11 to detect the voltage of the energy storage element 13. The voltage measuring device 35 is connected to the control device 17 so that the detected voltage value can be sent by the voltage measuring device 35 to the control device 17. Threshold values ​​or limit values ​​are stored in the storage device 16. One type of threshold value defines a minimum voltage of the energy storage element 13. If the detected voltage value reaches a threshold value defining the minimum voltage of the energy storage element 13, the control device 17 sends a signal to the actuator 21, thereby removing the locking element 24 from the recess 25 of the power tool interface 10. As a result, the rechargeable battery 11 is released from the power tool 1, so that the minimum voltage of the energy storage element 13 is displayed to the user of the power tool 1.

[0083] List of Reference Numerals

[0084] 100 systems

[0085] 1. Power Tools

[0086] 2Power tool housing

[0087] 3Tool Accessories

[0088] 4 handles

[0089] 4a Upper end of the handle

[0090] 4b Lower end of handle

[0091] 5 Tools

[0092] 6. Drive

[0093] 7a Transmission

[0094] 7b Output shaft

[0095] 8Control Unit

[0096] 9 Actuation switch

[0097] 10 Power tool interface

[0098] 11. Rechargeable battery

[0099] 12 Battery housing

[0100] 13 Energy storage element

[0101] 14 Acceleration sensor for power tools

[0102] 15. Lock your device

[0103] 16 Storage Devices

[0104] 17 Control Device

[0105] 18 Rechargeable battery accelerometer

[0106] 19 Displacement Sensor

[0107] 20 Track equipment

[0108] 21 Actuator

[0109] 22 Battery interface

[0110] 23 Enabling device

[0111] 24 Locking element

[0112] 25 recess

[0113] 26 Rack

[0114] 27 Worm gear shaft

[0115] 28 Wedge-shaped element

[0116] 29 Putter

[0117] 30 Coils

[0118] 31 Pivot Point

[0119] 32 Power tool memory

[0120] 33 Upper side of battery housing

[0121] 34 lines

[0122] 35 Voltage measuring device

[0123] P positive contact

[0124] M Negative contact

[0125] K Communication contact

[0126] WS distance

Claims

1. A system (100) comprising a power tool (1) and at least one rechargeable battery (11) as an energy supply for the power tool (1), the at least one rechargeable battery having at least one energy storage element (13), the system comprising a locking device (15) having at least one locking element (24) for releasably connecting the at least one rechargeable battery (11) to the power tool (1), It is characterized in that The locking device (15) comprises at least one actuator (21) for reversibly moving the at least one locking element (24) from a first position to a second position, wherein in the first position the rechargeable battery (11) is movable relative to the power tool (1), and in the second position the rechargeable battery (11) is non-movably connected to the power tool (1).

2. The system (100) as claimed in claim 1, It is characterized in that The at least one actuator (21) can be activated via an activation device (23).

3. The system (100) according to claim 1 or 2, It is characterized in that The at least one actuator (21) is actuable via at least one sensor (14, 18, 19).

4. The system (100) according to at least one of claims 1 to 3, It is characterized in that The locking device (15) comprises at least one drive (6) for the translational movement of the at least one locking element (24).

5. The system (100) according to at least one of claims 1 to 4, It is characterized in that At least one acceleration sensor (14, 18) is included to detect at least one acceleration value, wherein the at least one acceleration sensor (14, 18) is connected to the locking device (15) so that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element (24) moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery (11) to the power tool (1).

6. A rechargeable battery (11) for use in a system (100) with a power tool (1) as claimed in at least one of claims 1 to 5.

7. The rechargeable battery (11) as claimed in claim 6, It is characterized in that At least one acceleration sensor (18) is included to detect at least one acceleration value, wherein the at least one acceleration sensor (18) is connected to the locking device (15) so that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element (24) moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery (11) to the power tool (1).

8. A power tool (1) for use in a system (100) according to at least one of claims 1 to 5 having at least one rechargeable battery (11).

9. The power tool (1) according to claim 8, It is characterized in that At least one acceleration sensor (14, 18) is included to detect at least one acceleration value, wherein the at least one acceleration sensor (14, 18) is connected to the locking device (15) so that if the detected acceleration value reaches a predetermined threshold value, the at least one locking element (24) moves to the first position and electrical energy can no longer be transmitted from the at least one rechargeable battery (11) to the power tool (1).

10. A method for controlling a locking device (15) in a system (100), the system comprising a power tool (1) and at least one rechargeable battery (11) as an energy supply for the power tool (1), wherein: The locking device (15) comprises at least one actuator (21) for reversibly moving at least one locking element from a first position to a second position or a third position, The method is characterized by the following steps: - detecting at least one acceleration value via an acceleration sensor (14, 18); - comparing at least one detected acceleration value with at least one first threshold value and a second threshold value; - if the at least one detected acceleration value corresponds to the first threshold value, transmitting at least one first signal to the actuator (21) to switch the locking element (24) from the first position to the second position; and - if the at least one detected acceleration value corresponds to the second threshold value, transmitting at least one second signal to the actuator (21) to switch the locking element (24) from the first position to the third position.

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