Protection device, battery protection element, portable work device and method at least for protecting battery

Abstract

The invention relates to a method for operating a portable work device (12a; 10b) of a protective device (12a; 10b), in particular an impact protection device, having a housing (14a; 14b) which is connected to the tool housing (14a; 16b) having a different configuration, and at least one battery protection unit (16a; 16b), which is provided for protecting the battery mounting region (20a; 20b) by means of at least partially at least laterally surrounding the battery mounting region (20a; 20b) for protecting the working device (12a; 18b), which is connected to the at least one battery (18a; 18b) is protected from damage, in particular impact damage, for example by means of the working tool (12a; 12b) of the motor (12).

Description

Background Art

[0001] Due to the risk of fire of damaged accumulators, especially lithium-ion accumulators, the protection of accumulators has become increasingly important in daily operation. Summary of the Invention

[0002] The present invention provides a protection device, especially an impact protection device, for a portable working appliance, having at least one accumulator protection unit configured differently from the working appliance housing, the accumulator protection unit being arranged to protect at least one accumulator of the working appliance from damage, especially from impact damage, by at least partially surrounding the accumulator mounting area at least from the sides, the damage being caused, for example, by an impact resulting from the dropping of the working appliance.

[0003] The operation safety can be advantageously improved by the inventive configuration of the protection device, since in particular the accumulator protected by the protection device is prevented from being damaged. The maintenance intervals and cleaning intervals can be advantageously extended, since in particular the pollution of the electrical contact areas and / or the accumulator mounting area provided for mounting the accumulator by, for example, dust or splash liquid is significantly reduced by surrounding the accumulator mounting area from the sides. The safety for the user can be advantageously increased, since in particular the damage of the accumulator, which may cause, for example, a fire of the accumulator harmful to the user or the release of substances harmful to the user from inside the accumulator, is prevented. For example, it is known that a possibly undetected minor damage of the accumulator (for example due to dropping) can also cause the accumulator to slowly heat up within a few hours and ultimately lead to a fire of the accumulator, for example when the working appliance having the accumulator has already been stored in a vehicle or a building again. These problems and related potential catastrophic consequences can be advantageously avoided by the protection device. In particular, the protection device is arranged to reliably protect the accumulator against dropping from a height of at least 50 cm, preferably at least 1 m, particularly preferably at least 2 m.

[0004] Preferably, the accumulator is assigned to at least one portable working appliance. For example, the accumulator can be configured as a replaceable battery pack, which can be installed on one or more, in particular different, portable working appliances. Preferably, the working appliance is designed to be operated at least largely manually by the user. Preferably, the working appliance is configured as a portable and / or mobile appliance, preferably as a hand-held power tool and / or a gardening appliance and / or a household appliance and / or a sanitary device or the like, which is designed to be operated by means of the accumulator. For example, a portable and / or mobile hand-held power tool can be configured as a pipe wrench, a pipe press, an accumulator screwdriver, a saw (such as a hacksaw), a drill, a grinding machine, a shearing machine, a milling machine, a hot melt glue gun, a blower, a multi-functional tool, a polishing machine, a planer or a similar power tool. A portable and / or mobile gardening appliance can be, for example, a manual grass cutting tool, pruning shears, a lawn mower, a tree saw, a leaf blower, a chain saw, a shredder, an electric pruning shear, a long-reach pruning shear, an electric gardening hoe, an electric brush or a similar gardening appliance. A portable and / or mobile household appliance can be configured, for example, as a cleaning device (such as a vacuum cleaner, a window cleaner, a high-pressure cleaner), a personal care device (such as a razor, a hair dryer, an electric toothbrush), a lighting device (such as a flashlight) or a similar household appliance. In addition, other accumulator-operated portable working appliances from other application areas, such as the medical sector, can be considered. Preferably, the protection device is arranged and fixed on the portable and / or mobile working appliance. It can also be considered that the protection device protects the accumulator on a non-portable working appliance that may, for example, tip over. "Portable" should be understood here as being light in weight, such that the working appliance can be transported by an adult operator without auxiliary tools, in particular by carrying and / or rolling and / or pushing, and the operation of the working appliance is carried out at least substantially largely manually.

[0005] Preferably, the protection device is at least configured to protect the accumulator of the working appliance and / or the housing of the working appliance. Preferably, the protection device is configured as an impact protection device, which is used as protection against impacts and / or contamination (in particular due to dust and sewage) and / or against scratching of the protected components. It can be considered that the protection device protects other components of the working appliance, such as the working appliance drive and / or the operating elements of the working appliance and / or the display screen or other elements from damage. Preferably, the protection device is configured in one piece or two pieces. Preferably, the protection device has a U-shaped configuration. An object being set or configured or arranged for a specific function preferably means that the object fulfills and / or implements the specific function in at least one application and / or operating state.

[0006] Preferably, the battery protection unit is at least partially arranged in the vicinity of the battery. In particular, the vicinity of the battery consists of all points having a distance of less than 30 cm, preferably less than 15 cm, more preferably less than 10 cm and most preferably less than 5 cm from the battery. Preferably, the battery protection unit is arranged at least mostly parallel to the installation direction of the battery on the side of the battery to be protected. Preferably, the battery protection unit is provided for protecting the battery of the working appliance against impact loads. Preferably, in addition to the battery, the battery protection unit also protects the electrical battery interface, which is in particular provided for transmitting the energy of the battery to the working appliance, in particular to the drive of the working appliance and / or to the measuring unit of the working appliance and / or to the control and regulation unit of the working appliance and / or to the output unit of the working appliance or to other electrically operated functional units.

[0007] "Impact" should in particular be understood here as the force transmission caused by at least a brief contact of two solids. Preferably, the impact is caused by the impact of the working appliance falling onto a solid (such as the ground) or by the working appliance colliding against a solid (such as a wall) and / or by a solid hitting a placed working appliance (such as a stone falling onto a placed working appliance).

[0008] "Battery interface" should in particular be understood here as the contact area which is provided for transmitting the electrical energy of the battery to the working appliance. In addition to the electrical energy transmission, the battery interface can also transmit information data via a data interface (such as via a USB interface or a bus system and / or a similar interface), such as the battery temperature and / or the electro-chemical health state of the battery and / or the battery charge and / or other data, in particular measurement data.

[0009] "Damage" should in particular be understood here as a preferably mechanical change of a component which results in endangering the function and / or performance and / or service life and / or appearance of the component.

[0010] Preferably, the battery is constructed as an energy storage device, in particular an electro-chemical energy storage device, which is provided for receiving electrical energy during the charging process and for outputting electrical energy to the power-consuming devices of the working appliance during operation. In particular, the battery is constructed as a lithium-ion battery. It is conceivable that the battery can also be constructed as a disposable battery, such as a common battery. Preferably, the battery is detachably and / or replaceably arranged on the working appliance. However, it is also conceivable that the battery is fixedly integrated in the working appliance. "Battery installation area" should in particular be understood here as the area filled by the fully installed battery. Preferably, the battery has a battery installation direction. Preferably, the battery can only be installed in this installation direction. "Battery installation direction" should in particular be understood here as a direction which is provided for pushing the battery into the provided battery installation area.

[0011] Preferably, the working tool housing is configured to protect components in the working tool, in particular against contamination and damage. Preferably, the working tool housing is configured to protect the user from injury, in particular by rotating and / or energized and / or hot components. Preferably, the working tool housing is configured to enable the user to grasp and / or hold and / or use the working tool. The battery protection unit and / or the battery mounting area can in particular be arranged at any location on the working tool housing. Preferably, the battery protection unit and / or the battery mounting area are arranged on the lower end of the working tool housing. Preferably, the battery protection unit and / or the battery mounting area are arranged in the vicinity of the handle of the portable working tool. In particular, the vicinity of the handle of the portable working tool consists of all points having a distance of less than 30 cm, preferably less than 15 cm, more preferably less than 10 cm and most preferably less than 5 cm from the battery. In particular, the battery protection unit is constructed separately from the working tool housing. In particular, the battery protection unit is mounted on the working tool housing.

[0012] Preferably, the battery protection unit is configured to protect the battery against impact loads and / or contamination (in particular due to dust and sewage) and / or scratches. Preferably, the battery protection unit is arranged in the vicinity of the battery to be protected. In particular, the vicinity of the battery consists of all points having a distance of less than 30 cm, preferably less than 15 cm, more preferably less than 10 cm and most preferably less than 5 cm from the battery.

[0013] Furthermore, it is proposed that the battery protection unit, in particular the first and second battery protection elements of the battery protection unit, at least largely, preferably completely surround at least a part of the working implement housing, in particular a part of the handle of the working implement housing, in the connection area of the battery protection unit to the working implement. A particularly stable connection can advantageously be formed, because when a force acts, in particular when a force is generated due to an impact, the components of the connection between the battery protection unit and the working implement housing are less loaded, because the force is distributed particularly well over the entire perimeter surrounding the connection. Preferably, the first and second battery protection elements at least substantially surroundingly contact the working implement housing. Preferably, the second battery protection element is constructed mirror-symmetrically to the first battery protection element. Preferably, at least the contact areas of the first and second battery protection elements with the working implement housing form the connection area of the battery protection unit. Preferably, the battery protection unit forms a pushing-in area for pushing in the battery, in particular directionally from the side of the working implement. Preferably, the wall of the battery protection unit is lowered in the pushing-in area, in particular constructed flush with the working implement housing and / or the battery mounting unit of the protection device. Preferably, the connection area is provided for connecting the battery protection unit to the working implement housing. Preferably, the connection area is additionally provided for protecting the area of the working implement housing facing the battery from damage. Preferably, the connection area is arranged in the vicinity of the electrical battery interface and / or the connection area. In particular, the vicinity of the battery interface is formed by all points having a distance of less than 30 cm, preferably less than 15 cm, more preferably less than 10 cm and most preferably less than 5 cm from the battery interface. "Largely" should in particular be understood in the context as 60%, preferably 70%, more preferably 80% and particularly preferably 90%.

[0014] Furthermore, it is proposed that the battery protection unit includes at least a first battery protection element and at least a second battery protection element, and the second battery protection element is constructed separately from the first battery protection element. Advantageously, the repair cost can be reduced because especially in case of impact only the first battery protection element and / or the second battery protection element is damaged, and thus only the first battery protection element and / or the second battery protection element needs to be replaced, and particularly advantageously, there is no need to replace the working tool housing. Preferably, the first battery protection element and the second battery protection element are arranged on two different sides opposite to the installed battery. Preferably, in the installed state, the first and second battery protection elements contact each other at least in one contact area and preferably in at least two contact areas which are especially arranged separately from each other. Preferably, these two contact areas arranged separately from each other are arranged on two different sides opposite to the installed battery. Preferably, the first and second battery protection elements completely constitute the battery protection unit. Preferably, the first battery protection element and / or the second battery protection element is made of impact-resistant and / or energy-absorbing material, such as plastic or composite material or metal material. Preferably, the installed battery protection unit is completely open at the end region facing away from the working tool housing.

[0015] It is additionally proposed that the first battery protection element forms at least an especially comprehensive first battery protection backplate, and / or the second battery protection element forms an especially comprehensive second battery protection backplate. Advantageously, it is possible to protect the battery from damage and / or contamination, since the especially comprehensive first battery protection backplate and the comprehensive second battery protection backplate act as dust and / or water protection due to their closed configuration. Advantageously, repairs can be carried out by the user himself, since the first battery protection element and / or the second battery protection element can be replaced particularly simply. Preferably, at least the first especially comprehensively constructed battery protection backplate and / or the second especially comprehensively constructed battery protection backplate are provided for shielding and discharging dust and / or waste water from the battery. Preferably, at least the second battery protection backplate is oriented substantially parallel to the first battery protection backplate. Preferably, the first battery protection element, especially the first battery protection backplate and the second battery protection element, especially the second battery protection backplate, are arranged mirror-image to each other. Preferably, the first battery protection backplate and the second battery protection backplate are arranged on opposite sides of the battery. Preferably, the first battery protection backplate and the second battery protection backplate are arranged on two long sides of the battery, especially on the longest side faces. Preferably, the battery protection backplate is arranged non-contact and / or without contact with the battery. Preferably, the first battery protection backplate and / or the second battery protection backplate protrude along the main impact direction and / or along the mounting direction. Preferably, the first battery protection backplate and / or the second battery protection backplate are connected to each other by the first battery protection element and the second battery protection element and a connecting element and are particularly preferably constructed without additional connecting elements and / or tabs. In particular, the battery protection element has no connecting tabs at least on the side facing away from the battery mounting area. Preferably, the battery protection unit is open, preferably completely open, on the side facing away from the battery mounting area. Preferably, at least the first battery protection backplate and / or at least the second battery protection backplate are made of plastic, especially a plastic injection molding. Preferably, the strength of the plastic material is lower than the strength of the working appliance housing material. It is conceivable that at least the first battery protection backplate and / or at least the second battery protection backplate are made of a composite material with improved material properties in terms of material strength and / or material elasticity. It is conceivable that the battery protection backplate has perforations, such as small holes and / or slits.

[0016] Furthermore, it is proposed that the first battery protection backplate and / or the second battery protection backplate have a main extension plane, which is oriented at least substantially parallel to the most likely main impact direction and / or at least substantially perpendicular to the battery mounting direction. Advantageously, the strength of the first battery protection backplate and the second battery protection backplate can be improved, since the stiffness is increased in particular by the parallel arrangement of the longest faces of the battery protection backplate. The "most likely main impact direction" should in particular be understood as the direction of the force caused by the impact between two solids that most frequently occurs during multiple impacts. Preferably, the main impact direction is significantly affected by the position where the working implement hits the ground during a drop. Preferably, the surface of the component with the smallest distance from the installed battery is most likely to come into contact first, since in most cases the installed battery is closest to the center of gravity of the working implement. The "main extension plane of the structural unit" should in particular be understood as a plane that extends parallel to the largest side face of the smallest imaginary cuboid that just completely encloses the structural unit and in particular through the center of this cuboid.

[0017] Furthermore, it is proposed that the first battery protection element and the second battery protection element are interconnected by at least one detachable connecting element, such as a screw. Advantageously, the repair costs can be reduced, since in particular only the first battery protection element and / or the second battery protection element are damaged during an impact, so that only the first battery protection element and / or the second battery protection element need to be replaced, and particularly advantageously, the working implement housing does not need to be replaced. Advantageously, in certain configurations, the possibility is thus achieved that the user can perform the repair himself. Advantageously, the strength of the working implement housing is improved, since in particular the working implement housing is not weakened by the holes for the threaded connection. Preferably, the detachable connecting element is arranged in the vicinity of the connection area of the working implement. In particular, the vicinity of the connection area consists of all points having a distance of less than 20 cm, preferably less than 10 cm, more preferably less than 5 cm and most preferably less than 2 cm from the connection area. Preferably, the connecting element, in particular the main extension direction of the connecting element, is arranged parallel to the closest side face of the working implement housing. The "connecting element" should in particular be understood as at least one component that interconnects two separately constructed parts in a form-fitting and / or force-locking manner. The "main extension direction" of an object should in particular be understood as the direction that extends parallel to the longest side of the smallest geometric cuboid that just completely encloses the object.

[0018] Furthermore, it is proposed that in a possible embodiment, the battery protection unit is preferably detachably connected to the working tool housing without a threaded connection, and the detachment is preferably damage-free. Advantageously, the repair cost can be reduced because especially in case of an impact, only the first battery protection element and / or the second battery protection element are damaged, so that only the first battery protection element and / or the second battery protection element need to be replaced, and particularly advantageously, the working tool housing does not need to be replaced. Advantageously, the strength of the working tool housing is improved because the working tool housing is not weakened by the holes for the threaded connection, in particular. Preferably, the connection, especially the connection between the first and the second battery protection elements, is configured as a threaded connection, and the threaded connection is implemented as a screwed-in or plugged-in connection. It is also conceivable that the connection is configured as a snap connection, and the snap connection can be opened and closed without tools, in particular. It is conceivable that, additionally or alternatively to the connection between the first battery protection element and the second battery protection element, the battery protection unit has at least one connection, especially a screwed-in connection, between the battery protection unit and the working tool housing.

[0019] Furthermore, it is proposed that the battery protection unit is connected to the working tool housing only by form-fitting, in particular. Advantageously, the force transmission from the battery protection unit to the working tool housing can be improved because the form-fitting is designed in particular such that the impact force is distributed over as large a surface as possible. Preferably, the form-fitting connection is arranged to at least substantially prevent the relative rotational movement of the battery protection unit relative to the working tool housing. Preferably, the form-fitting connection is arranged to at least substantially prevent the relative movement of the battery protection unit relative to the working tool housing in the most likely main impact direction. Preferably, the form-fitting connection has at least one form-fitting element on the battery protection unit and at least one corresponding form-fitting element on the working tool housing.

[0020] Additionally, it is proposed that the battery protection unit is connected to the working tool housing by a tongue-and-groove connection. Advantageously, the form-fitting connection is constructed particularly stably because especially the surrounding and self-closed configuration of the form-fitting connection is particularly stable. Advantageously, since the tongue-and-groove connection is constructed elastically, energy can be absorbed. Preferably, the groove is constructed at least partially, preferably completely, surrounding the working tool housing or the battery protection unit. Preferably, the tongue is constructed at least partially, preferably completely, surrounding the working tool housing or the battery protection unit. Preferably, the groove and the tongue are arranged in at least substantial contact with each other. Preferably, the tongue-and-groove connection is arranged to absorb mechanical energy, especially impact energy.

[0021] Furthermore, it is proposed that the main extension plane of the form-fitting element of the battery protection unit is constructed to extend obliquely with respect to the expected main impact direction in order to establish a tongue-and-groove connection. Advantageously, the force direction caused by the impact can be introduced particularly well into the working tool housing, since in particular the force is at least partially transmitted into the tongue in the circumferential direction of the groove. Advantageously, the breaking force can be increased, since in particular the surfaces of the groove and / or the tongue subjected to the impact force can be increased. In particular, in the installed state, the minimum angle between the main extension direction of the form-fitting element and the main impact direction is greater than 45°, preferably greater than 60°, more preferably greater than 75° and particularly preferably approximately 80°. In particular, the minimum angle between the main extension direction of the form-fitting element of the battery protection unit and the battery installation direction is less than 45°, preferably less than 30°, more preferably less than 15° and particularly preferably approximately 10°. In particular, the minimum angle between the main extension plane of the battery installation opening provided for installing the battery and the main extension direction of the form-fitting element of the battery protection unit is greater than 45°, preferably greater than 60°, more preferably greater than 75° and particularly preferably approximately 80°. Preferably, the form-fitting element extends around and in particular surrounds the working tool housing and closes, wherein the form-fitting element has at least two, in particular a plurality of, different angles with respect to the main impact direction and / or the battery installation direction and / or the main extension direction of the battery installation opening at the periphery. Preferably, the minimum angle between the main extension plane of the form-fitting element and the main impact direction is set to convert the force acting in the main impact direction into a force in the circumferential direction, whereby the breaking force can be increased. "Obliquely" should be understood here in particular as the orientation of the form-fitting element with respect to the main impact direction, which is different from the parallel orientation and different from the perpendicular orientation.

[0022] Furthermore, it is proposed that the form-fitting element of the battery protection unit is constructed around the battery protection unit and / or the corresponding form-fitting element of the working tool housing is constructed around the working tool housing. Advantageously, the form-fitting connection can be constructed particularly stably, since in particular the surrounding and closed configuration of the form-fitting connection is particularly stable. Preferably, the form-fitting element of the battery protection unit is constructed around and closed around the battery protection unit. Preferably, the corresponding form-fitting element of the working tool housing is constructed around and closed around the working tool housing. Preferably, the form-fitting element arranged on the battery protection unit is constructed as a groove. It is conceivable that the form-fitting element arranged on the battery protection unit is constructed as a tongue. Preferably, the form-fitting element arranged on the working tool housing is constructed as a tongue. It is conceivable that the form-fitting element arranged on the working tool housing is constructed as a tongue.

[0023] Furthermore, it is proposed that the form-locking element of the battery protection unit and / or the corresponding form-locking element of the working implement housing have a tapered profile. Advantageously, the load acting on the tenon is reduced, since in particular the surface, in particular the shear surface, is increased and the stiffness of the tenon, in particular the bending stiffness, is increased. Preferably, the tapered profile is constructed such that the tenon has a minimum thickness on the side facing the component arranged on the corresponding form-locking element. Preferably, the tapered profile is constructed such that the groove has a maximum thickness on the side facing away from the component arranged on the corresponding form-locking element.

[0024] Furthermore, it is proposed that the battery protection unit engages with the working implement housing. Advantageously, impact energy can be absorbed particularly well, since in particular the teeth must deform slightly in order to enter the locked state, and the deformation absorbs energy. Preferably, the teeth of the battery protection unit have at least one, in particular trapezoidal, tooth, and the teeth of the working implement housing have at least one corresponding, in particular trapezoidal, tooth groove. Preferably, each tooth has a distinct platform and each tooth groove has a distinct corresponding tooth root. Preferably, the teeth are arranged only on two opposite sides arranged parallel to the battery protection back plate. However, it is conceivable that the teeth extend over the entire perimeter of the battery protection unit and / or the working implement housing. The battery protection unit can additionally be fixed to the working implement housing by means of a threaded connection. In embodiments with teeth, the threaded connection, in particular the threaded seat, is arranged parallel to the most likely main impact direction. Preferably, each threaded connection has a threaded seat. Preferably, an elastic damping element is arranged in each threaded seat, which is in particular constructed as a rubber spacer sleeve. Preferably, the elastic damping element is provided for damping impact loads and preventing mechanical loads on the threaded connection, in particular in the locked state. "Threaded seat" should be understood here in particular as a substantially cylindrical or conical projection into which the screw for providing the connection can be screwed. For example, the threaded seat has a hole for screwing in the screw. By means of the threaded seat, for example, the minimum length required for the threaded connection can be provided, without the need for the entire component to be equipped with a corresponding wall thickness. Thereby, in particular, damping elements and / or clamping elements and / or form-locking elements and / or screw locking elements etc. can be arranged in the threaded seat.

[0025] It is additionally proposed that the toothing between the battery protection unit and the working implement housing forms an energy absorption unit, which is designed to at least partially absorb the energy generated by an impact. Advantageously, the strength can be increased, since in particular a part of the impact energy can be absorbed and thus the component load can be reduced. Preferably, in the unloaded state, there is a distance between the teeth of the toothing on the battery protection unit and the corresponding tooth grooves on the working implement housing. Preferably, in the unloaded state, the toothing of the battery protection unit is arranged in non-contact with the corresponding tooth grooves of the working implement housing. Preferably, in particular in each operating state different from the locked state, the distance between the end face of each tooth of the battery protection unit and the corresponding bottom face of the working implement housing of each tooth root is greater than the distance between the tooth flank of each tooth and the corresponding tooth face of each tooth root. Preferably, the energy absorption unit forms a damping cascade. Preferably, the damping cascade consists at least of the damping elements of each threaded seat and the toothing. Preferably, a series of damping cascades is defined by the distance between the toothing and the locked state of the threaded connection. Preferably, the damping elements are arranged in front of the toothing in the damping cascade. Any alternative sequence in the damping cascade can be considered, in particular a damping cascade with additional damping elements. The "operating state" should preferably be understood as a state in which the protection device is ready to withstand impact loads and / or is in the unloaded state, in which the battery is protected in particular against impacts and / or can absorb impact energy.

[0026] Furthermore, it is proposed that the battery protection unit has at least one elastically flexible energy absorption element, which is formed or fastened on the battery protection element of the battery protection unit. Advantageously, the strength can be increased, since in particular a part of the impact energy can be absorbed and thus the component load can be reduced. Preferably, at least one elastically flexible energy absorption element is arranged on the side of the battery protection unit facing away from the working implement housing. Preferably, the elastically flexible energy absorption element is made of a thermoplastic elastomer, in particular by an injection molding method, which has clearly elastic material properties. Preferably, at least one elastically flexible energy absorption element is connected to the battery protection unit in a material-locking manner.

[0027] Furthermore, it is proposed that at least one battery protection backplate, which is one of the battery protection elements, includes a damping and / or reinforcement structure that extends over at least a majority of the backplate side of the battery protection backplate in a planar manner and is integrally formed, preferably monolithically formed, onto the battery protection element. Advantageously, the damage resistance can be improved because, in particular, the battery protection element with the reinforcement structure can withstand greater impact forces and the battery protection element with the damping structure can absorb more impact energy. Preferably, the formed damping and / or reinforcement structure is arranged on one side, in particular the inner side, of the first battery protection backplate and the second battery protection backplate. Preferably, the damping and / or reinforcement structure has a honeycomb structure that is particularly hexagonal and / or six-sided. It is also conceivable that the damping and / or reinforcement structure is configured as a ribbed, in particular formed, structure. Preferably, the damping and / or reinforcement structure is made of the same or identical material as the battery protection backplate. It is conceivable that the damping and / or reinforcement structure is made of a different material than the battery protection backplate, in particular a more flexible material elastically. "Integrally" should in particular be understood as being connected at least materially locked, for example by a welding process, an adhesive process, a spraying process and / or other processes that make sense to a person skilled in the art and / or advantageously formed in one piece, for example by casting manufacturing and / or by manufacturing using a single-component or multi-component injection molding method and preferably manufactured from a single blank.

[0028] Furthermore, a battery mounting unit is proposed, which at least forms a battery mounting area for mounting the battery onto a working implement, wherein the battery mounting unit is configured such that the battery can only be mounted if the battery protection element is mounted correctly, in particular. Advantageously, the safety can be increased because, in particular, the working implement cannot be operated without the battery protection unit. Preferably, the battery mounting unit is arranged to enable and / or simplify the mounting and / or dismounting of the battery along the mounting direction at least.

[0029] Additionally, it is proposed that at least one battery mounting element of the battery mounting unit is integrally or monolithically connected to the battery protection element. Advantageously, the safety can be increased because, in particular, the working implement cannot be operated without the battery protection unit. Advantageously, the mounting can be simplified because, in particular, the battery mounting element integrally or monolithically connected to the battery protection element is automatically mounted and / or positioned when the battery protection element is mounted to the working implement housing and does not have to be mounted separately and particularly advantageously does not have to be centered and / or oriented here.

[0030] Furthermore, it is proposed that the battery mounting element forms at least part of a guide rail for guiding the insertion or removal movement of the battery. Advantageously, safety can be increased because the working appliance cannot be operated without the battery protection unit. Preferably, the battery mounting unit is configured as at least one guide rail, in particular a battery rail. Preferably, the guide rail guides the battery during mounting and / or restricts the movement of the battery at least substantially perpendicular to the mounting direction during and / or after mounting.

[0031] Furthermore, it is proposed that the battery mounting unit is at least largely, preferably completely, constituted by a battery protection unit that can be detachably connected to the housing of the working appliance without damage. Advantageously, safety can be increased because, in particular, the working appliance cannot be mounted and / or operated without the battery protection unit. Preferably, the battery mounting unit is integrally connected to the battery protection unit. Preferably, the battery mounting unit is constituted by each of at least two battery protection elements of the battery protection unit. "Largely" can mean here, for example, except for electrical connection elements, in particular contact conductors. It can be considered that the electrical battery interface, in particular the contact conductor, is integrated into the battery protection unit and connected to the working appliance by means of a plug connection. Alternatively, it can also be considered that at least one electrical contact of the electrical battery interface is integrated into the battery protection unit and / or inserted through the battery protection unit.

[0032] Furthermore, a battery protection element for constituting a protection device, in particular an impact protection device, is proposed. Advantageously, the service life can be extended because, in particular, when hitting a solid object, such as when the working appliance falls, the battery is no longer damaged. Advantageously, the battery protection element can be replaced by the user himself. Preferably, at least one of the at least two battery protection elements and / or a single battery protection element and / or all battery protection elements are constructed separately from each other and / or can be installed and / or can be purchased as replacement parts, and in particular can be replaced and / or substituted by the user himself.

[0033] Furthermore, a portable working appliance, such as a hand-held power tool, a portable gardening appliance, a portable household appliance and / or similar appliances, having a protection device is proposed. Advantageously, the service life of the portable working appliance can be extended because, in particular, the fall of the working appliance does not cause damage to the battery. Advantageously, the maintenance interval can be extended because, in particular, when hitting a solid object, such as when falling, the battery is no longer damaged.

[0034] Furthermore, a method for protecting at least a storage battery of a portable working appliance, such as a hand-held power tool, a portable gardening appliance, a portable household appliance, and / or similar appliances, is proposed, in particular by means of a protection device which has at least one battery protection unit having a different configuration from the housing of the working appliance, wherein the battery protection unit protects the storage battery from impact damage by at least partially shielding the battery installation area of the working appliance at least from the side, for example by an impact caused by the working appliance falling. Advantageously, the service life of the portable working appliance can be extended because, in particular, the falling of the working appliance does not cause damage to the storage battery. Advantageously, the maintenance interval can be extended because, in particular, when hitting a solid object, such as falling, the storage battery is no longer damaged.

[0035] The protection device according to the invention, the battery protection element according to the invention, the portable working appliance according to the invention, and the method for protecting at least a storage battery according to the invention should not be limited to the above applications and embodiments. In particular, the protection device according to the invention, the battery protection element according to the invention, the portable working appliance according to the invention, and the method for protecting at least a storage battery according to the invention have a number deviating from the number of the respective elements, components, and units and method steps described herein in order to meet the working modes described herein. Furthermore, within the numerical ranges given in this disclosure, the numerical values within the said limits should also be regarded as disclosed and can be used arbitrarily. Description of the Drawings

[0036] Further advantages result from the following description of the drawings. Two embodiments of the invention are shown in the drawings. The drawings, the description, and the claims contain a plurality of combined features. A person skilled in the art can also consider the said features separately and meaningfully and summarize them into other combinations.

[0037] The drawings show:

[0038] Figure 1 : A schematic view of a working appliance according to the invention with a protection device,

[0039] Figure 2 : A schematic view of a working appliance with a protection device,

[0040] Figure 3a : A schematic view of a protection device having a battery protection unit including a battery protection element,

[0041] Figure 3b : A schematic view of a protection device having a battery protection unit including an alternative battery protection element,

[0042] Figure 4 : A schematic flow chart of a method for protecting a storage battery,

[0043] Figure 5 Schematic illustration of an alternative embodiment of a working implement having an alternative protective device

[0044] Figure 6 Schematic illustration of the energy absorption unit of the alternative protective device, and

[0045] Figure 7 Schematic flow chart of an alternative method for protecting a storage battery DETAILED DESCRIPTION

[0046] Figure 1 Shows a part of the portable working implement 12a. The portable working implement 12a is configured as a portable hand-held power tool. Alternatively, the working implement 12a can also be configured as a portable gardening implement, a portable household implement, a portable sanitary implement or a similar implement. The portable working implement 12a has a storage battery 18a. The portable working implement 12a has a protective device 10a. The protective device 10a is configured as an impact protection device. The protective device 10a is provided for mounting on the portable working implement 12a. The protective device 10a has a storage battery protection unit 16a. The storage battery protection unit 16a is configured differently from the working implement housing 14a. The storage battery protection unit 16a is provided for protecting the storage battery 18a of the working implement 12a from damage. Damage to the storage battery 18a may constitute impact damage. Impact damage may be caused by an impact resulting from the working implement 12a falling. The storage battery protection unit 16a protects the storage battery 18a by surrounding the storage battery mounting area 20a from the side. The storage battery protection unit 16a additionally protects the storage battery 18a from scratches. The storage battery protection unit 16a additionally protects the storage battery 18a from contamination by dust and sewage. The storage battery protection unit 16a protects the working implement housing 14a from impact damage.

[0047] The battery protection unit 16a has a first battery protection element 22a. The battery protection unit 16a has a second battery protection element 24a. The second battery protection element 24a is constructed separately from the first battery protection element 22a. The battery protection elements 22a, 24a are made of a material that resists impact and / or absorbs energy. The material of the battery protection elements 22a, 24a has a more flexible material property than the material of the working appliance housing 14a. Alternatively, the battery protection elements 22a, 24a can be made of the same material as the working appliance housing 14a. The battery protection unit 16a has a connection area 26a. In the connection area 26a, the battery protection unit 16a is connected to the working appliance 12a. The battery protection unit 16a completely surrounds the working appliance housing 14a. Alternatively, the battery protection unit 16a can only mostly surround the working appliance housing 14a. The first battery protection element 22a and the second battery protection element 24a are interconnected by two detachable connection elements 36a. The connection elements 36a are constructed as screws. The connection elements 36a are arranged completely recessed in the first battery protection element 22a and the second battery protection element 24a. The connection elements 36a are arranged parallel to the working appliance housing 14a. The battery protection unit 16a is connected to the working appliance housing 14a without a threaded connection. The battery protection unit 16a is connected to the working appliance housing 14a in a non-destructive detachable manner. Alternatively, the battery protection elements 22a, 24a can be connected and / or tightened to the working appliance housing 14a, for example, in the vicinity of a tongue-and-groove connection.

[0048] The first battery protection element 22a forms the first battery protection backplate 28a. The first battery protection backplate 28a is configured in its entirety. The second battery protection element 24a forms the second battery protection backplate 30a. The second battery protection backplate 30a is configured in its entirety. Alternatively, only the first battery protection backplate 28a or only the second battery protection backplate 30a can be configured in its entirety. Alternatively, the first battery protection backplate 28a and / or the second battery protection backplate 30a can be configured mostly in its entirety. It is conceivable that the first battery protection backplate 28a and / or the second battery protection backplate 30a can have perforations, such as holes and / or slits. The first battery protection backplate 28a and the second battery protection backplate 30a are configured mirror-symmetrically to each other. The first battery protection backplate 28a and the second battery protection backplate 30a are arranged on opposite sides of the battery 18a. The first battery protection backplate 28a and the second battery protection backplate 30a are arranged parallel to the long side of the battery 18a. The first battery protection backplate 28a and the second battery protection backplate 30a are arranged without contact with the battery 18a. The first battery protection backplate 28a and the second battery protection backplate 30a protrude beyond the installed battery 18a in the main impact direction. The first battery protection backplate 28a and the second battery protection backplate 30a protrude beyond the installed battery 18a parallel to the longitudinal direction. The battery protection backplates 28a, 30a are connected to each other by the battery protection elements 22a, 24a and / or by the connecting elements 36a. The battery protection backplates 28a, 30a do not have additional connecting elements and / or tabs.

[0049] The first battery protection backplate 28a has a main extension plane. The main extension plane of the first battery protection backplate 28a is oriented parallel to the most likely main impact direction 32a. The main extension plane of the first battery protection backplate 28a is oriented parallel to the battery installation direction 34a. The second battery protection backplate 30a has a main extension plane. The main extension plane of the second battery protection backplate 30a is oriented parallel to the most likely main impact direction 32a. The main extension plane of the second battery protection backplate 30a is oriented parallel to the battery installation direction 34a. The main extension direction of the first battery protection backplate 28a is arranged parallel to the main extension direction of the second battery protection backplate 30a. The battery protection unit 16a has a battery installation opening 70a. The battery installation opening 70a extends perpendicular to the battery installation direction 34a. The battery installation opening 70a is provided for enabling the installation and / or removal of the battery 18a when the battery protection unit 16a is installed. It is conceivable that the battery protection unit 16a has other openings 72a, for example, on the side of the battery 18a facing away from the working implement housing 14a and / or on the side of the battery 18a facing away from the battery installation opening 70a. It is conceivable that the other openings 72a of the battery protection unit 16a only partially extend on the side of the battery protection unit 16a assigned to the opening.

[0050] The battery protection unit 16a has four flexible energy absorption elements 46a. The battery protection unit 16a may also have a number of flexible energy absorption elements 46a different from 4. The flexible energy absorption elements 46a are formed or fastened to the battery protection elements 22a, 24a of the battery protection unit 16a. The energy absorption elements 46a are formed onto the battery protection elements 22a, 24a by a multi-component injection molding method. Each of the four energy absorption elements 46a has a material thickness of at least 4 mm. The battery protection unit 16a has four corners 64a. These corners 64a are arranged on the side 66a of the battery protection unit 16a facing away from the working implement housing 14a. A flexible energy absorption element 46a is formed or fastened to each corner 64a. The flexible energy absorption elements 46a are made of a thermoplastic elastomer. The flexible energy absorption elements 46a have significantly elastic material properties. The energy absorption elements 46a are provided for partially absorbing impact energy.

[0051] Figure 2The protection device 10a is shown in a side view. The battery protection unit 16a is connected to the working implement housing 14a by means of a form fit 60a. The battery protection unit 16a is connected to the working implement housing 14a by means of a groove - tongue connection 62a. The battery protection unit 16a has a form - fit element 38a. In the installed state, the form - fit element 38a of the battery protection unit 16a points towards the working implement housing 14a. The form - fit element 38a of the battery protection unit 16a has a main extension plane in order to form the groove - tongue connection 62a. The main extension plane is constructed to extend obliquely with respect to the expected main impact direction 32a.

[0052] Figure 3a A view showing the working implement 12a with a battery protection element 24a. The form - fit element 38a of the battery protection unit 16a is constructed around the battery protection unit 16a. The form - fit element 38a is formed by a first battery protection element (not shown) and a second battery protection element 24a. In the installed state, the first battery protection element (not shown) and the second battery protection element 24a are arranged relative to one another such that the form - fit element 38a surrounds seamlessly and is formed continuously. The working implement housing 14a has a corresponding form - fit element 40a to the form - fit element 38a. The corresponding form - fit element 40a of the working implement housing 14a is constructed around the working implement housing 14a. The form - fit element 38a of the battery protection unit 16a has a tapered profile 68a. The corresponding form - fit element 40a of the working implement housing 14a has a tapered profile. The form - fit element 38a is constructed to taper in the direction of the corresponding form - fit element 40a. The corresponding form - fit element 40a is constructed to taper in the direction of the form - fit element 38a. The sides of the form - fit element 38a and the corresponding form - fit element 40a facing the battery 18a are oriented parallel to the battery installation direction 34a. The sides of the form - fit element 38a and the corresponding form - fit element 40a facing away from the battery 18a have an angle with respect to the battery installation direction 34a.

[0053] The battery protection backplates 28a, 30a of the battery protection elements 22a, 24a extend in a substantially planar manner over most of the backplate side 58a of the battery protection backplates 28a, 30a. The battery protection backplates 28a, 30a include a damping structure 48a. The damping structure 48a is integrally or monolithically formed onto the battery protection elements 22a, 24a. The damping structure 48a is arranged on the backplate side 58a of the battery protection backplate 58a facing the battery 18a. Alternatively, the damping structure 48a can be arranged on the backplate side 58’a facing away from the battery 18a or on both backplate sides 58a, 58’a. The battery protection backplates 28a, 30a include a reinforcement structure 50a. The reinforcement structure 50a is integrally or monolithically formed onto the battery protection elements 22a, 24a. The reinforcement structure 50a is arranged on the backplate side 58a facing the battery 18a. Alternatively, the reinforcement structure 50a can be arranged on the backplate side 58’a facing the battery 18a or on both backplate sides 58a, 58’a. The damping structure 48a and the reinforcement structure 50a are made of the material of the battery protection backplates 28a, 30a. Alternatively, the damping structure 48a and / or the reinforcement structure 50a can be made of a material different from that of the battery protection backplates 28a, 30a.

[0054] The protection device 10a has a battery mounting unit 52a. The battery mounting unit 52a forms a battery mounting area 20a for mounting the battery 18a onto the working implement 12a. The battery mounting unit 52a is constructed such that the battery 18a can only be mounted if the battery protection elements 22a, 24a are correctly installed. The battery mounting unit 52a has two battery mounting elements 54a, 54’a. The battery mounting elements 54a, 54’a of the battery mounting unit 52a are integrally or monolithically connected to the battery protection elements 22a, 24a. The battery mounting elements 54a, 54’a form part of a guide rail 56a. Alternatively, the battery mounting unit 52a can be formed completely or partially by the working implement housing 14a (see Figure 3b)。The guide rail 56a is configured to guide the insertion or removal movement of the battery 18a. The guide rail 56a is oriented parallel to the battery mounting direction 34a. The guide rail 56a is provided to fix the battery 18a perpendicular to the battery mounting direction 34a. The guide rail 56a has an insertion ramp along the battery mounting direction 34a. The insertion ramp is provided to simplify the battery installation. The battery mounting unit 52a is mostly composed of a battery protection unit 16a that can be detachably and non-destructively connected to the working appliance housing 14a. Alternatively, the battery mounting unit 52a can be entirely composed of a battery protection unit 16a that can be detachably and non-destructively connected to the working appliance housing 14a. The battery mounting unit 52a is provided to position the battery 18a relative to the electrical connection element 74a of the working appliance 12a. The battery mounting unit 52a is provided to connect the battery 18a to the electrical connection element 74a of the working appliance 12a. The battery mounting unit 52a has a closing element 76a. The closing element 76a is provided to positively fix the battery 18a in the battery mounting area 20a. Alternatively, the closing element 76a can be arranged on the working appliance housing 14a. The closing element 76a is configured as a snap groove. The snap groove is provided to establish a positive connection with a corresponding snap element.

[0055] Figure 4 Schematic flow chart showing a method for protecting a battery 18a of a portable working appliance 12a, such as a hand-held power tool, a portable gardening appliance, a portable household appliance, and / or a similar appliance, by means of a protection device 10a.

[0056] In method step 90a, the battery 18a is protected from impact loads by a battery protection unit 16a having a different construction from the working appliance housing 14a. The battery 18a is protected from impact loads and / or impact damage by the battery protection unit 16a partially shielding the battery mounting area 20a of the working appliance 12a from the side. Protect the battery 18a from impact damage such as by an impact caused by the working appliance 12a falling and / or by an impact caused by the working appliance 12a colliding against a wall.

[0057] In another method step 92a, the working appliance housing 14a is protected from impact loads by the battery protection unit 16a. The working appliance housing 14a is protected from impact damage by configuring the battery protection unit 16a such that the battery protection unit is damaged before the working appliance housing is damaged due to mechanical impact loads.

[0058] In another method step 94a, the working appliance 12a and / or the battery 18a are protected by four energy absorption elements 46a in the case of impact loads, and these energy absorption elements absorb the impact energy during impact.

[0059] In a further method step 96a, the working implement 12a and / or the accumulator 18a are protected from shock loads by a damping structure 48a arranged on each inner backplate side 58a, which absorbs shock energy during a shock.

[0060] In a further method step 98a, the accumulator 18a is additionally protected from contamination and / or sewage.

[0061] In Figures 5 to 7 a further embodiment of the invention is shown. The following description and the drawings are basically limited to the differences between the embodiments, wherein with respect to identically designated components, in particular with respect to components having the same reference signs, reference can in principle also be made to other embodiments, in particular Figures 1 to 4 the drawings and / or the description. To distinguish the embodiments, the letter a is appended to the reference signs of the embodiments shown in Figures 1 to 4 In the embodiments shown in Figures 5 to 7 the letter a is replaced by the letter b.

[0062] Figure 5 A schematic view of the protection device 10b is shown in a bottom view. The protection device 10b has an accumulator protection unit 16b. The accumulator protection unit 16b has a toothing 42b with the working implement housing 14b. The toothing 42b between the accumulator protection unit 16b and the working implement housing 14b forms an energy absorption unit 44b. The energy absorption unit 44b is arranged to at least partially absorb the energy generated by a shock. The accumulator protection unit 16b is screwed to the working implement housing 14b by four screws 102b.

[0063] Figure 6 A schematic view of the toothing 42b is shown in a side view. The toothing 42b has trapezoidal teeth 78b on the accumulator protection unit 16b. The toothing 42b has trapezoidal tooth grooves 80b corresponding to the trapezoidal teeth 78b of the accumulator protection unit 16b on the working implement housing 14b. Each tooth 78b has a distinct platform-like bottom surface 82b. Each tooth groove 80b has a distinct corresponding root surface 86b. The toothing 42b is arranged on two sides parallel to the accumulator protection backplates 28b, 30b. Alternatively, the toothing 42b can also be arranged circumferentially between the accumulator protection unit 16b and the working implement housing 14b. The teeth 78b and the tooth grooves 80b of the toothing 42b are arranged side by side perpendicular to the main shock direction, wherein the toothing 42b is arranged to receive a force in the main shock direction. Alternatively, the teeth 78b and the tooth grooves 80b of the toothing 42b can be arranged side by side parallel to the main shock direction, wherein the alternative arrangement of the toothing 42b can be arranged to receive a force perpendicular to the main shock direction.

[0064] The first battery protection element 22b is fastened to the working appliance housing 14b by means of two screws 102b. The second battery protection element 24b is fastened to the working appliance housing 14b by means of two screws 102b. Each screw 102b is arranged parallel to the most likely main impact direction 32b. Each screw 102b has a threaded seat 112b. A damping element 114b is arranged in each threaded seat 112b. The damping element 114b is configured as a rubber spacer sleeve. The rubber spacer sleeve is made of an elastic material, such as rubber or elastomer. Alternatively, the damping element 114b can also be configured as a metal dowel element. It is also conceivable that the damping element 114b is configured as a shape memory alloy. The damping element 114b is provided for damping impact loads. The threaded seat 112b is provided for preventing a locked state and thus for preventing impact loads on the threaded connection. The energy absorption unit 44b forms a damping cascade. The damping cascade consists of the damping element 114b of the screw 102b and the toothing 42b. The damping element 114b is arranged in the damping cascade in front of the toothing 42b.

[0065] In the unloaded state, the teeth 78b and the corresponding tooth grooves 80b are arranged spaced apart from one another. In the unloaded state, the teeth 78b and the corresponding tooth grooves 80b are arranged not in contact with one another. The teeth 78b each have two tooth flanks 84b, 84'b. The corresponding tooth grooves 80b have tooth root flanks 88b, 88'b corresponding to the tooth flanks 84b, 84'b. In each operating state different from the locked state, the toothing 42b has a shortest distance 108b between the bottom surface 82b and the corresponding tooth root surface 86b, which shortest distance is greater than the shortest distance 106b between each of the two tooth flanks 84b, 84'b and the corresponding tooth root flanks 88b, 88'b. The battery protection unit 16b and the working appliance housing 14b have a shortest distance 104b in the region of the threaded seat 112b. The shortest distance 104b is greater than the shortest distance 108b. The shortest distance 104b is greater than the shortest distance 106b.

[0066] Figure 7 A schematic flow chart showing a method for protecting a battery 18b of a portable working appliance 12b, such as a hand-held power tool, a portable gardening appliance, a portable household appliance and / or a similar appliance, by means of a protection device 10b.

[0067] In method step 90b, the battery 18b is protected from impact loads by a battery protection unit 16b different from the working appliance housing 14b. The battery 18b is protected from impact damage by the battery protection unit 16b partially shielding the battery mounting area 20b of the working appliance 12b from the side. The battery 18b is protected from impact damage, for example, by an impact caused by the working appliance 12b falling and / or by an impact caused by the working appliance 12b hitting a wall.

[0068] In a further method step 92b, the working tool housing 14b is protected against impact loads by the battery protection unit 16b. The battery protection unit 16b is configured such that it is damaged due to mechanical impact loads before the working tool housing 14b is damaged, thereby protecting the working tool housing 14b from impact damage.

[0069] In a further method step 94b, the working tool 12b and / or the battery 18b are protected by four energy absorption elements 46b in the event of impact loads, and these energy absorption elements absorb the impact energy during impact.

[0070] In a further method step 96b, the working tool 12b and / or the battery 18b are protected by a damping structure 48b arranged on each inner back plate side 58b in the event of impact loads, and this damping structure absorbs the impact energy during impact.

[0071] In a further method step 98b, the battery 18b is additionally protected against contamination and / or sewage.

[0072] In a further method step 100b, the working tool 12b and / or the battery 18b are protected by an energy absorption unit 44b in the event of impact loads, and this energy absorption unit absorbs the impact energy during impact. The energy absorption unit 44b is formed by a damping cascade. In the damping cascade, the impact energy is first damped by a damping element 114b in a threaded connection. The impact load is damped by the damping element 114b until the teeth 78b of the tooth part 42b and the tooth grooves 80b come into contact. Subsequently, the impact energy is absorbed by the tooth part 42b. In the event of an impact load, the tooth flanks 84b and the corresponding tooth root flanks 88b press against each other, thereby achieving the energy absorption of the energy absorption unit. If the impact force is large enough such that the bottom surface 82b of the tooth 78b contacts the corresponding tooth root flank 88b, a locked state is reached. In the locked state, no more impact energy is absorbed for elastic and / or plastic material deformation.

Claims

1. A protection device (10a; 10b), in particular an impact protection device, for a portable working appliance (12a; 12b), the protection device having at least one battery protection unit (16a; 16b) configured differently from the working appliance housing (14a; 14b), the battery protection unit being arranged to protect at least one battery (18a; 18b) of the working appliance (12a; 12b) from damage, in particular impact damage, by at least partially surrounding the battery mounting area (20a; 20b) at least from the side, the damage being caused, for example, by an impact resulting from the working appliance (12a; 12b) falling.

2. The protection device (10a; 10b) according to claim 1, characterized in that, The battery protection unit (16a; 16b), in particular the first battery protection element (22a; 22b) and the second battery protection element (24a; 24b) of the battery protection unit (16a; 16b), at least mostly, preferably completely surrounds the working appliance housing (14a; 14b) in at least the connection area (26a; 26b) of the battery protection unit (16a; 16b), in which connection area the battery protection unit (16a; 16b) is connected to the working appliance (12a; 12b).

3. The protection device (10a; 10b) according to claim 1 or 2, characterized in that, The battery protection unit (16a; 16b) includes at least one first battery protection element (22a; 22b) and at least one second battery protection element (24a; 24b), the second battery protection element being configured separately from the first battery protection element (22a; 22b).

4. The protection device (10a; 10b) according to claim 2 or 3, characterized in that, The first battery protection element (22a; 22b) forms at least one particularly comprehensive first battery protection back plate (28a; 28b), and / or the second battery protection element (24a; 24b) forms a particularly comprehensive second battery protection back plate (30a; 30b).

5. The protection device (10a; 10b) according to claim 4, characterized in that, The first battery protection back plate (28a; 28b) and / or the second battery protection back plate (30a; 30b) has a main extension plane that is at least substantially parallel to the most likely main impact direction (32a; 32b) and / or at least substantially perpendicular to the battery mounting direction (34a; 34b).

6. The protection device (10a; 10b) according to any one of claims 3 to 5, characterized in that, The first battery protection element (22a; 22b) and the second battery protection element (24a; 24b) are interconnected by at least one detachable connecting element (36a; 36b), such as a screw.

7. The protection device (10a; 10b) according to any one of the preceding claims, characterized in that The battery protection unit (16a; 16b) is connected to the working appliance housing (14a; 14b) without a threaded connection to the working appliance housing (14a; 14b), preferably in a non-destructively detachable manner.

8. The protection device (10a; 10b) according to any one of the preceding claims, in particular according to claim 7, characterized in that The battery protection unit (16a; 16b) is connected to the working appliance housing (14a; 14b) by form-fitting (60a; 60b).

9. The protection device (10a; 10b) according to any one of the preceding claims, in particular according to claim 7 or 8, characterized in that, The battery protection unit (16a) is connected to the working appliance housing (14a) by a groove-tongue connection (62a).

10. The protection device (10a; 10b) according to claim 9, characterized in that, For establishing the tongue-and-groove connection (62a), the main extension plane of the form-fitting element (38a) of the battery protection unit (16a) is configured to extend obliquely with respect to the expected main impact direction (32a).

11. The protection device (10a; 10b) according to claim 9 or 10, characterized in that, The form-fitting element (38a) of the battery protection unit (16a) is constructed to surround the battery protection unit (16a), and / or the corresponding form-fitting element (40a) of the working tool housing (14a) is constructed to surround the working tool housing (14a).

12. The protection device (10a; 10b) according to any one of claims 9 to 11, characterized in that, The form-fitting element (38a) of the battery protection unit (16a) and / or the corresponding form-fitting element (40a) of the working tool housing (14a) has a tapered profile (68a).

13. The protection device (10b) according to claim 8, characterized in that, The battery protection unit (16b) engages with the working tool housing (14b).

14. The protection device (10b) according to claim 13, characterized in that, The toothing (42b) between the battery protection unit (16b) and the working tool housing (14b) forms an energy absorption unit (44b), which is arranged to at least partially absorb the energy generated by an impact.

15. The protection device (10b) according to any one of the preceding claims, characterized in that The battery protection unit (16b) has at least one elastically flexible energy absorption element (46b), which is shaped or fastened to the battery protection elements (22b; 24b) of the battery protection unit (16b).

16. The protection device (10b) according to at least claim 4, characterized in that, At least one battery protection backplate (28a; 28b; 30a; 30b) of one of the battery protection elements (22a; 22b; 24a; 24b) includes a damping structure (48a; 48b) and / or a reinforcement structure (50a; 50b) that extends in a planar manner over at least most of the backplate side of the battery protection backplate (28a; 28b; 30a; 30b) and is integrally formed, preferably monolithically formed, onto the battery protection element (22a; 22b; 24a; 24b).

17. The protection device (10b) according to any one of the preceding claims, characterized in that There is a battery mounting unit (52a; 52b), which forms at least one battery mounting area (20a; 20b) for mounting the battery (18a; 18b) onto the working tool (12a; 12b), wherein the battery mounting unit (52a; 52b) is configured such that the battery (18a; 18b) can only be mounted if the battery protection elements (22a; 22b; 24a; 24b) are installed correctly, in particular.

18. The protection device (10a; 10b) according to claim 17, characterized in that, At least one battery mounting element (54a; 54b) of the battery mounting unit (52a; 52b) is integrally or monolithically connected to the battery protection element (22a; 22b; 24a; 24b).

19. The protection device (10a; 10b) according to claim 18, characterized in that, The battery mounting element (54a; 54b) forms at least a part of a guide rail (56a; 56b) for guiding the insertion or removal movement of the battery (18a; 18b).

20. The protection device (10a; 10b) according to any one of claims 17 to 19, characterized in that, The battery installation unit (52a; 52b) is constructed at least mostly, preferably completely, by a battery protection unit (16a; 16b) that can be detachably connected to the working tool housing (14a; 14b) without damage.

21. A battery protection element (22; 22b; 24a; 24b) for forming a protection device (10a; 10b) according to any one of the preceding claims, in particular an impact protection device.

22. A portable working tool (12a; 12b), such as a hand-held power tool, a portable gardening tool, a portable household appliance, and / or a similar tool, having a protection device (10a; 10b) according to any one of claims 1 to 20.

23. A method for protecting at least a storage battery (18a; 18b) of a portable working appliance (12a; 12b), said portable working appliance being, for example, a hand-held power tool, a portable gardening appliance, a portable household appliance and / or a similar appliance, in particular being protected by means of a protection device (10a; 10b) according to any one of claims 1 to 20, said protection device having at least one storage battery protection unit (16a; 16b) which is configured differently from the working appliance housing (14a; 14b), wherein, The battery (18a; 18b) is protected from impact damage, such as that caused by an impact resulting from the working tool (12a; 12b) falling, by at least partially shielding the battery installation area (20a; 20b) of the working tool (12a; 12b) from the side by the battery protection unit (16a; 16b).

Images