An electric lifting trolley

Abstract

The present disclosure relates to an electric lifting trolley (1) comprising a drivable frame (2) extending vertically along a vertical axis (y1). Further, comprising an adjustable item receiving platform (3) connected to a first surface (2a) of said drivable frame (2). Further, the electric lifting trolley comprises a battery bracket arrangement (10) comprising a receptacle (11) and a battery cell enclosure (12). The receptacle (11) comprises an upper and a lower surface (11a, 11b) defining a cavity therebetween, wherein the battery cell enclosure (12) is arranged to be fitted in said cavity by lateral movement relative said receptacle (11).

Description

[0001] AN ELECTRIC LIFTING TROLLEY

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to an electric lifting trolley comprising a battery bracket arrangement and such a battery bracket arrangement.

[0004] BACKGROUND

[0005] Electric lifting trolleys are used in various industries to handle items within warehouses, factories and constructions sites. Electric lifting trolleys are designed to lift and transport heavy items to reduce manual effort and minimize the risk of injuries for a user.

[0006] Accordingly, electric lifting trolleys comprises of a chassis defining a main structure of the electric lifting trolley. Further, having a load platform arranged to receive items thereon. Moreover, electric lifting trolleys comprises electronic components to allow the load platform to be electronically controlled. Conventionally, the electronic components of the electric lifting trolley comprise heavy battery modules having a weight of around 15 kg for powering the electric lifting trolley.

[0007] Such battery modules of electric lifting trolleys are usually removed and replaced with fully charged battery modules when drained in order to minimize downtime and ensure efficient operation of the lifting trolley.

[0008] The replacement of the battery module of an electric lifting trolley is usually performed manually by a user. A disadvantage with lifting trolleys of the present art is that they have poor ergonomic designs which leads to physical harm to the user that replaces the battery module.

[0009] Hence, electric lifting trolleys of the present art have poor ergonomic designs which leads to that battery module replacement causes physical harm for users performing the replacements. As a consequence of the poor ergonomic design, the battery module replacement operation is also time-consuming.

[0010] Therefore, there is room for electric lifting trolleys in the present art to explore the domain to provide an electric lifting trolley that is improved in its ergonomic design. Specifically, there is room for electric lifting trolleys to enable a battery module replacement operation thereof to be more ergonomic and / or efficient for a user to perform. By improving the aforementioned aspects of lifting trolleys, they would ensure increased safety for users and more efficient operations.

[0011] Accordingly, it would be desirable to provide an electric lifting trolley that address requirements related to ergonomic design and / or efficiency.

[0012] SUMMARY

[0013] It is therefore an object of the present disclosure to alleviate at least some of the mentioned drawbacks to provide an electric lifting trolley that is improved in ergonomic design and / or efficiency.

[0014] This object is achieved by means of an electric lifting trolley and a battery bracket arrangement as defined in the appended claims. The present disclosure is at least partly based on the insight that by providing an electric lifting trolley that defines a cavity that allows a battery cell enclosure to be fitted therein by lateral movement, the battery replacement operation of the electric lifting trolley is improved ergonomically and in efficiency.

[0015] The present disclosure relates to an electric lifting trolley comprising a drivable frame extending vertically along a vertical axis. Further the electric lifting trolley comprises an adjustable item receiving platform connected to a first surface of said drivable frame. Further, the electric lifting trolley comprises a battery bracket arrangement comprising a receptacle and a battery cell enclosure. The receptacle is attached to a second surface of said drivable frame protruding from said second surface along a lateral axis being perpendicular to said second surface i.e. the lateral axis may be the normal vector of the second surface such that it is orthogonal so said second surface and / or orthogonal to a wall of said receptacle that is attached to said second surface. The first and second surfaces may be on opposite sides of the frame. The receptacle comprises an upper and a lower surface defining a cavity therebetween (i.e. in-between the upper and lower surface) wherein the battery cell enclosure is arranged to be fitted in / attached between said cavity by lateral movement relative said receptacle. The battery cell enclosure may be fitted so that it is releasably secured therein by a fastening mechanism. Accordingly, the upper and lower surface may be substantially laterally extending surfaces, wherein the upper surface has a greater distance to ground than the lower surface. Lateral movement may refer to a movement that is substantially in the direction of the lateral axis (may vary with +-0.1-30° along the vertical axis).

[0016] An advantage of the electric lifting trolley according to the present disclosure is that since the battery cell enclosure is fitted in-between the cavities by lateral movement, it is less physically demanding for a user to insert and remove the battery cell enclosure from the cavity.

[0017] One of said upper and lower surfaces may be angled relative the other surface, wherein the enclosure is arranged to be releasably secured (e.g. by a locking mechanism) to said cavity inbetween said upper and lower surface. In some aspects, the lower surface may be extending substantially perpendicular to the vertical axis along said lateral axis and the upper surface may be angled / tilted relative the lower surface. The upper surface may be angled such that the cavity is tapering / narrowing along its depth towards a wall of the receptacle (that abuts / is adjacent to the second surface). The upper surface of said receptacle may form an angle of 100-130 degrees relative said vertical axis, preferably 105-120 degrees, more preferably 105- 115 degrees.

[0018] An advantage of this is that it further enables a simpler and more convenient insertion / removal of the battery cell enclosure. The angled surface allow the bottom part of the battery cell enclosure to firstly be inserted into the cavity supported by the lower surface, subsequently, the upper part of the battery cell enclosure can be tilted into the cavity so that the battery cell enclosure is fitted therein. To remove the battery cell enclosure, the aforementioned process can be performed in reverse. Hence, reducing the physical burden for a user in both insertion and removal.

[0019] The battery cell enclosure may be dimensioned to fit into the cavity, thereby an uppermost surface of said battery cell enclosure and a lowermost surface of said battery cell enclosure at least partly correspond to the form of the upper and lower surface of said receptacle. Accordingly, the part of the battery cell enclosure (which is arranged to fit in the receptacle) may be dimensioned to correspond to the dimensions of the receptacle. In other words, they may have similar dimensions with a play / clearance relative each other. Thus, they may have a clearance fit.

[0020] Further, a lowermost surface of said battery cell enclosure may have greater length than said lower surface of said receptacle along said lateral axis. Accordingly, when the receptacle is at an installed state in which it is attached to / fitted in the receptacle (so the lowermost surface abuts the lower surface), the lowermost surface extends longer along said lateral axis compared to the lower surface.

[0021] An advantage of this is that it facilitates the insertion and removal of said enclosure.

[0022] The battery cell enclosure may comprise a locking mechanism arranged to releasably secure the battery cell enclosure to the receptacle. For example, when the battery cell enclosure is fitted into the cavity, the locking mechanism may be mechanical. Le. the locking mechanism may be a frictional locking mechanism or a latch locking mechanism, or any other suitable locking mechanism.

[0023] An advantage of this is that is more securely attaches the battery cell enclosure to the receptacle.

[0024] Further, the battery cell enclosure comprises first and second opposite side surfaces, wherein each side surfaces may, at an installed state of said battery cell enclosure, be accessible by a user. In other words, when installed, the side surfaces may be exposed to the ambient environment. Accordingly, the cavity of the receptacle may be defined by said upper and lower surface, having no side surfaces.

[0025] An advantage of this is that is allows the battery cell enclosure to be inserted by grabbing the side surfaces thereof.

[0026] The side surfaces may define the width of the receptacle therebetween. The width of the battery cell enclosure may be substantially the same as the width of the receptacle.

[0027] Further, the battery cell enclosure may comprise a gripping means at each side surface, allowing a user to conveniently handle the battery cell enclosure. The gripping means may be in the form of a handle. The handle may be a T-bar handle, a D-handle, a pistol grip handle or any other suitable handle.

[0028] Each gripping means may be hingedly (i.e. by hinges) connected to a corresponding side surface such that each gripping means is adjustable enabling alternation between a protruding state (e.g. extending perpendicular to the vertical axis) for being carried by a user, and a relaxed state (extending parallel with the vertical axis). The gripping means may extend perpendicular to the vertical axis by 3-30 cm, preferably 3-20 cm. At said relaxed state the gripping means is parallel with said side surfaces. An advantage of this is that when a user wants to handle the battery cell enclosure, the gripping means can be grabbed to its protruded state, wherein when not in need of use, the gripping means can be parallel with the side surface forming a compact structure.

[0029] Accordingly, in the protruding state the gripping means may extend to be substantially perpendicular to the vertical axis (+-30 degrees).

[0030] Further, at least one of the gripping means (preferably both) comprises a first locking member arranged to attach to a corresponding mating member of said receptacle when in said relaxed state. The first locking member and the mating member may attach by a ball lock mechanism, a latch mechanism, a hook lock mechanism or any other mechanism. The first locking member may be arranged to connect to the mating member when transitioning the gripping means from the protruding state to the relaxed state. Further, the first locking member may be released / unattached from the mating member by a release button. Each gripping means may have a release button that may be pressed to disengage the first locking member from the mating member to allow the gripping means to transition from a relaxed state to a protruding state enabling removal of the battery cell enclosure from the receptacle.

[0031] The receptacle may comprise control circuitry, the control circuitry being arranged to be powered by at least one battery cell arranged to be enclosed by said battery cell enclosure. Accordingly, the battery cell enclosure may enclose a battery module which is arranged to power the control circuitry to allow the control circuitry to control e.g. the receiving platform, a display unit of the trolley, one or more sensor devices of the trolley or any other electric components of the electric lifting trolley.

[0032] The control circuitry may be comprised by the receptacle. Further, the display unit may also be comprised in the receptacle, Accordingly, the battery cell enclosure may comprise a contact interface, wherein when fitted to said cavity, said contact interface is arranged to electrically connect to a corresponding contact interface of said receptacle, thereby powering said control circuitry. The contact interface may be positioned at a wall / surface of said battery cell enclosure and the corresponding contact interface of the receptacle may be positioned at a corresponding wall / surface of the receptacle. The contact interface may be a connector, pogo pins, or any other contact interface enabling a battery module in said receptacle to transfer energy to power the control circuitry.

[0033] The present disclosure also relates to a battery bracket arrangement arranged to connect to an electric lifting trolley to power said electric trolley, the battery bracket arrangement comprising a receptacle and, a battery cell enclosure wherein the receptacle is arranged to attach to a frame of said electric trolley. The receptacle comprises an upper and lower surface defining a cavity therebetween, wherein the battery cell enclosure is arranged to be fitted in said cavity by lateral movement relative said receptacle.

[0034] The features and advantages of the receptacle and the battery cell enclosure of the electric lifting trolley may apply to the battery bracket arrangement aswell. Therefore, to avoid undue repetition reference is made to the features of the receptacle and the battery cell enclosure of the electric lifting trolley.

[0035] BRIEF DESCRIPTION OF THE DRAWINGS

[0036] These and other features and advantages of the present disclosure will now be further clarified and described in more detail, with reference to the appended drawings;

[0037] Figure 1 illustrates an objective view of an electric lifting trolley in accordance with aspects of the present disclosure;

[0038] Figure 2 illustrates a side view of an electric lifting trolley in accordance with aspects of the present disclosure;

[0039] Figure 3 illustrates a front view of an electric lifting trolley in accordance with aspects of the present disclosure;

[0040] Figure 4 illustrates an objective view of a battery bracket arrangement in accordance with aspects of the present disclosure;

[0041] Figure 5A illustrates a front view of a receptacle in accordance with aspects of the present disclosure;

[0042] Figure 5B illustrates an objective exploded view of a battery cell enclosure in accordance with aspects of the present disclosure; Figure 6 illustrates a flowchart of insertion of a battery cell enclosure to a receptacle; and

[0043] Figure 7 illustrates a top view of an electric lifting trolley in which a user is inserting a battery cell enclosure to the receptacle of the electric lifting trolley.

[0044] DETAILED DESCRIPTION

[0045] In the following detailed description, some embodiments of the present disclosure will be described. However, it is to be understood that features of the different embodiments are exchangeable between the embodiments and may be combined in different ways, unless anything else is specifically indicated. Even though in the following description, numerous specific details are set forth to provide a more thorough understanding of the present disclosure, it will be apparent to one skilled in the art that the present disclosure may be practiced without these specific details. In other instances, well known constructions or functions are not described in detail, so as not to obscure the present disclosure.

[0046] It is also to be understood that the terminology used herein is for purpose of describing particular aspects only, and is not intended to be limiting. It should be noted that, as used in the specification and the appended claim, the articles "a", "an", "the", and "said" are intended to mean that there are one or more of the elements unless the context clearly dictates otherwise. Thus, for example, reference to "a unit" or "the unit" may refer to more than one unit in some contexts, and the like. Furthermore, the words "comprising", "including", "containing" do not exclude other elements or steps. It should be emphasized that the term "comprises / comprising" when used in this specification is taken to specify the presence of stated features, integers, steps, or components. It does not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof. The term "and / or" is to be interpreted as meaning "both" as well and each as an alternative. More specifically, the wording "one or more" of a set of elements (as in "one or more of A, B and C" or "at least one of A, B and C") is to be interpreted as either a conjunctive or disjunctive logic. Put differently, it may refer either to all elements, one element or combination of two or more elements of a set of elements. For example, the wording "A, B and C" may be interpreted as A or B or C, A and B and C, A and B, B and C, or A and C. It will also be understood that, although the term first, second, etc. may be used herein to describe various elements or features, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the embodiments. The first element and the second element are both elements, but they are not the same element.

[0047] Expression denoted as "the first", "the second", etc herein may be interchanged with other denotation within the scope of the present disclosure.

[0048] The term "electric lifting trolley" may refer to a lifting trolley that has circuitry for at least electrically controlling a receiving platform of the lifting trolley. The electric lifting trolley may comprise e.g. 3-4 wheels for driving the frame on a ground surface.

[0049] The term "drivable frame" may refer to a frame that is movable along a ground surface e.g. by means of wheels or sliding means.

[0050] Figure 1 illustrates an objective view of an electric lifting trolley 1 (hereinafter referred to as trolley) that comprises a (three-dimensional) drivable frame 2 extending vertically along a vertical axis yl, so to form an elongated structure. Further, the trolley 1 comprises an adjustable item receiving platform 3 (the term may be interchanged with "item receiving platform") connected to a first surface / portion 2a of said drivable frame 2. The item receiving platform 3, may as illustrated, be a plate like structure arranged to receive items, or a scoop like structure, or any other structure suitable for receiving items such as boxes. Accordingly, the item receiving platform 3, is adjustable, in the sense that it is movable vertically along said first surface 2a. Figure 1 further illustrates that the trolley 1 further comprises a battery bracket arrangement 10 comprising a receptacle 11 and a battery cell enclosure 12, wherein the receptacle 11 is attached to a second surface 2b of said drivable frame 2 protruding (away) from said second surface along a lateral axis xl being perpendicular to said second surface 2b (this is shown in Figure 1 at least by that the upper and lower surface 11a, lib extend away from surface 2b). In Figure 1 the battery cell enclosure 11 is not inserted in the receptacle 11. The receptacle 11 may be attached to an intermediate part of the second surface 2b so that a lowest point thereof is at least 0.5m from ground or 0.75m from ground, preferably, at least lm from ground. Figure 1 illustrates that the receptacle 11 and the platform 3 may be situated on / associated with opposite sides of the frame 2.

[0051] Figure 1 illustrates that the receptacle 11 comprises an upper and a lower surface 11a, lib (distanced from each other along the vertical axis yl), defining a cavity therebetween, wherein the battery cell enclosure 12 is arranged to be fitted in said cavity by lateral movement relative said receptacle 11. As illustrated in Figure 1, the upper and lower surface 11a, lib may face each other. In other words, upper and lower surface 11a, lib may be opposingly arranged. The term "lateral movement" may refer to movement substantially along the lateral axis xl.

[0052] The first and second surfaces 2a, 2b may be surfaces of a rod / pole / pi I la r 31 at which the battery bracket arrangement 10 and receiving platform 3 are attached to. Accordingly, the frame 2 may comprise a driving arrangement 30 (e.g. having wheels for driving the trolley on a ground surface) and a rod 31 (or other structure with a vertical extension) extending vertically from said driving arrangement 30. The battery bracket arrangement 10 and the receiving platform 3 being attached thereto. The rod 31 may have adjustment means (e.g. an operable rail or other track) for allowing the receiving platform 3 to be adjusted in height (vertically) along the rod 31. The trolley 1 may further also comprise a driving handle 32 as illustrated in Figure 1. The driving handle 32 may also be adjusted electrically or manually along the height of the rod. The item receiving platform 3 may comprise a sliding means that connects to the rod, in which the sliding means is adjustable relative the rod (resulting in that the platform will also be adjusted).

[0053] Figure 1 further illustrates that the lower surface lib may be substantially perpendicular to said vertical axis yl so to extend along the lateral axis xl. Accordingly, Figure 1 illustrates that the upper surface 11a is tilted relative the lower surface lib to enable a convenient insertion / removal of the enclosure 12. The battery cell enclosure 12 is dimensioned to fit into the cavity, thereby an uppermost surface 12a of said battery cell enclosure 12 and a lowermost surface 12b of said battery cell enclosure 12b (at least partially) correspond to the form of the upper and lower surface 11a, lib of said receptacle 11. Le. corresponding to a degree so that it allows the enclosure 12 to fit within the receptacle. Figure 1 further illustrates that a lowermost surface 12b of said battery cell enclosure has greater length than said lower surface lib of said receptacle 12 along said lateral axis xl so to allow the enclosure 12 to be fitted in the cavity by firstly inserting the lowermost surface 12b followed by tilting in the uppermost surface 12a to fit the enclosure 12 in the cavity.

[0054] The battery cell enclosure 12 may comprise a locking mechanism arranged to releasably secure the battery cell enclosure 12 to the receptacle 11. The locking mechanism may (autonomously) engage upon fitting said enclosure 12 and the receptacle 11.

[0055] Figure 2 illustrates a side view of the trolley 1 in accordance with aspects herein. Figure 2 illustrates when the enclosure 12 is fitted into the cavity / receiving portion in the receptacle 11. Figure 2 illustrates in an enlarged view A that that the upper surface 11a is angled relative the other surface (lib seen in Figure 1).

[0056] Specifically, Figure 2 illustrates that the upper surface 11a of said receptacle 11 may form an angle a of 100-130 degrees relative said vertical axis yl, preferably the angle is 105-120 degrees, more preferably the angle is 105-115 degrees.

[0057] Figure 3 illustrates a front view of the trolley 1 in accordance with aspects herein. Figure 3 illustrates that wherein said battery cell enclosure 12 comprises first and second opposite side surfaces 12c, 12d (defining a width of the enclosure 12), wherein each side surfaces 12c, 12d is, at an installed state of said battery cell enclosure 12, accessible by a user.

[0058] The term "installed state" may refer to when the enclosure 12 is fitted in the receptacle 11 as shown in Figure 3. In Figure 1, it is not in an installed state.

[0059] The term "accessible by a user" may refer to that the side surfaces 12c and 12d are not covered by any other surface, rather, they are (preferably fully) exposed / facing to the ambient environment allowing a user to remove / insert the enclosure 12 by simply grabbing the side surfaces 12c, 12d which results in a convenient insertion and removal as the user can distribute the weight with both hands while having an ergonomic body posture.

[0060] Figure 3 further illustrates that the battery cell enclosure 12 may comprises a gripping means 13 at each side surface 12c, 12d. Figure 4 illustrates an objective view of a removed battery cell enclosure. Figure 4 illustrates that the enclosure 12 comprises two gripping means 13. Each gripping means 13 is by hinges (hingedly) connected to corresponding side surfaces 12c, 12d such that each gripping means 13 is adjustable between a protruding state for being carried by a user, and a relaxed state, wherein at said relaxed state the gripping means 13 is parallel with said side surfaces 12c, 12d. Each gripping means may be arranged to be hingedly adjustable for a maximum of 120 degrees, preferably about 90 degrees from said relaxed state. The maximum amount of degrees may be defined as said protruding state. In Figure 4 the gripping means are in a protruding state having been adjusted for about 90 degrees relative the relaxed state. Accordingly, the enclosure 12 may comprise a barrier 16 preventing the gripping means 13 from being further adjusted beyond the 90 degrees.

[0061] Figure 4 illustrates that the enclosure 12 comprises side surfaces 12c-d, uppermost surface 12a, lowermost surface 12b. Further, the enclosure 12 may comprise opposite back and a front surfaces 12e-f. Thus, when fitted in the cavity of the receptacle 11 (defined by the space between the upper and lower surface 11a, lib thereof) the front surface 12f may abut or be adjacent (0.1-10 mm away from) a wall 15 of the receptacle 11. The wall 15 of the receptacle 11 may be attached to the frame of the trolley 1 (see Figure 1).

[0062] As noted herein, the arrangement 10 may comprise a locking mechanism. Specifically, the locking mechanisms may be provided by the at least one gripping means 13. Thus, each gripping means 13 may comprise a first locking member 13a arranged to attach to a corresponding mating member 13b of said receptacle 11. Thereby, the first locking member 13a and the mating member 13b may form a connection. Specifically, the first locking member 13a may be secured to the mating member upon / in response to a transition of the gripping means 13 from a protruded position to a relaxed position when said enclosure 12 is fitted in the cavity. Preferably, the first locking member 13a is secured by a click-lock mechanism to said mating member 13b.

[0063] Accordingly, as an example, the transition may enable a male part of the gripping means 13 to mate with a female part of the receptacle. The skilled person appreciates that the connection between the first locking member 13a and the mating member 13b may be secured in a variety of manners (clamp, ball lock, pawl-mechanism, latch mechanism etc.). Thus, the specific connection is not limited to any specific aspect in the present disclosure. Accordingly, the arrangement 10 may be arranged so that when the enclosure 12 is fitted in the receptacle 11 and the gripping means 13 is in a relaxed position the enclosure 12 is secured / locked to the receptacle 11. Accordingly, the arrangement 10 specifically the at least one gripping means 13 or receptacle 11 may comprise a release button / element / mechanism that may be arranged (by at least one of pressing, sliding, moving, twisting) to disengage the first locking member from the mating member to allow the gripping means to transition from a relaxed state to a protruding state enabling removal of the battery cell enclosure from the receptacle.

[0064] Preferably, the release element is provided at the gripping means 13 to allow a user to release / unlock the enclosure 12 from the receptacle 11 while gripping the gripping means 13. Thus, the user may then unlock and remove the enclosure 10 in one movement.

[0065] Figure 5A illustrates a front view of a receptacle 11 according to aspects herein comprising control circuitry 20, the control circuitry 20 configured to be powered by at least one battery cell arranged to be enclosed by said battery cell enclosure 12 (seen in Figure 5B). The control circuitry 20 may include, for example, one or more central processing units (CPUs), graphics processing units (GPUs) dedicated to performing calculations, and / or other processing devices. The control circuitry 20 may comprise one or more memory devices which may comprise any form of volatile or non-volatile computer readable memory including, without limitation, persistent storage, solid-state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), mass storage media (for example, a hard disk), removable storage media (for example, a flash drive, a Compact Disk (CD) or a Digital Video Disk (DVD)), and / or any other volatile or non-volatile, non-transitory device readable and / or computer-executable memory devices that store information, data, and / or instructions that may be used by the associated control circuitry 20. Each memory device may store any suitable instructions, data or information, including a computer program, software, an application including one or more of logic, rules, code, tables, etc. and / or other instructions capable of being executed by the control circuitry 20 and, utilized. The control circuitry 20 may comprise a printed circuit board (PCB).

[0066] The control circuitry 20 may be configured to control the platform of the trolley 1. The control circuitry 20 may further be configured to control / communicate to any other suitable electric unit of said trolley 1 such as a display unit of the trolley 1 and sensor devices of the trolley 1. Figure 5B illustrates an objective view of a battery cell enclosure 12 in accordance with aspects herein. As illustrated in Figure 5B, the battery cell enclosure 12 may be formed by extruded metal such as aluminum. The extruded metal may form the uppermost, lowermost, front and back surfaces 12a, 12b, 12e, 12f (referenced in Figure 4) of the battery cell enclosure 12. The side surfaces 12c-d may be attached to enclose the extruded metal.

[0067] Figure 5B further illustrates a battery module 21 arranged to be secured within the battery cell enclosure 21. Further, the battery cell enclosure 12 comprises a contact interface, wherein upon fitting said battery cell enclosure to said cavity, said contact interface is arranged to electrically connect to a corresponding contact interface of said receptacle 11, thereby powering said control circuitry 20 and other electrical components such as display devices, light units, etc.

[0068] Figure 6 schematically illustrates a flowchart of insertion of a battery cell enclosure to a receptacle 11 in accordance with aspects herein. Figure 6 illustrates in four steps that firstly, the battery cell enclosure 12 is moved laterally towards the receptacle 11. Further, the lowermost surface 12b of the enclosure 11 is angled towards the lower surface lib of the receptacle 11. Further, the uppermost surface 12a is angled inward towards the upper surface 11a such that the battery cell enclosure 12 is fitted in the cavity of the receptacle 11. Furthermore, the gripping means 13 are moved from a protruded position to a relaxed position so to lock the enclosure 12 to the receptacle 11.

[0069] Figure 7 illustrates advantages of the electric lifting trolley 1 according to aspects herein. Figure 7 illustrates a top view of the electric lifting trolley 1. Figure 7 illustrates that as the enclosure 12 can be laterally inserted into the receptacle 11, it allows for a user to do this without physical harm. Figure 7 further illustrates that e.g. compared to conventional solutions the user can grab the enclosure 12 from opposing sides and laterally insert the enclosure 12 in the receptacle 11.

Claims

CLAIMS1. An electric lifting trolley (1) comprising: a drivable frame (2) extending vertically along a vertical axis (yl), an adjustable item receiving platform (3) connected to a first surface (2a) of said drivable frame (2); a battery bracket arrangement (10) comprising a receptacle (11) and a battery cell enclosure (12), wherein the receptacle (11) is attached to a second surface (2b) of said drivable frame (2) protruding from said second surface along a lateral axis (xl) being perpendicular to said second surface (2b), wherein the receptacle (11) comprises an upper and a lower surface (11a, lib) defining a cavity therebetween, wherein the battery cell enclosure (12) is arranged to be fitted in said cavity by lateral movement relative said receptacle (11).

2. The electric lifting trolley (1) according to claim 1, wherein one of said upper and lower surface (11a, lib) is angled relative the other surface, wherein the enclosure (12) is arranged to be releasably secured to said cavity in-between said upper and lower surface (11a, lib).

3. The electric lifting trolley (1) according to claim 2, wherein the lower surface (lib) is substantially perpendicular to said vertical axis (yl), wherein the upper surface (11a) is tilted relative the lower surface (lib).

4. The electric lifting trolley (1) according to any one of the preceding claims, wherein the battery cell enclosure (12) is dimensioned to fit into the cavity, thereby an uppermost surface (12a) of said battery cell enclosure (12) and a lowermost surface (12b) of said battery cell enclosure (12b) correspond to the form of the upper and lower surface (11a, lib) of said receptacle (11).

5. The electric lifting trolley (1) according to any one of the preceding claims, wherein a lowermost surface (12b) of said battery cell enclosure has greater length than saidlower surface (lib) of said receptacle (12) along said lateral axis (xl).

6. The electric lifting trolley (1) according to any one of the preceding claims, wherein the battery cell enclosure (12) comprises a locking mechanism arranged to releasably secure the battery cell enclosure (12) to the receptacle (11).

7. The electric lifting trolley (1) according to any one of the preceding claims, wherein said battery cell enclosure (12) comprises first and second opposite side surfaces (12c, 12d), wherein each side surfaces (12c, 12d) is, at an installed state of said battery cell enclosure (12), accessible by a user.

8. The electric lifting trolley (1) according to claim 7, wherein said battery cell enclosure (12) comprises a gripping means (13) at each side surface (12c, 12d).

9. The electric lifting trolley (1) according to claim 8, wherein each gripping means (13) is hingedly connected to each side surface (12c, 12d) such that each gripping means (13) is adjustable between a protruding state for being carried by a user, and a relaxed state, wherein at said relaxed state the gripping means (13) is parallel with said side surfaces (12c, 12d).

10. The electric lifting trolley (1) according to claim 9, wherein at least one of the gripping means (13) comprises a first locking member (13a) arranged to attach to a corresponding mating member (13b) of said receptacle (11).

11. The electric lifting trolley (1) according to any one of the preceding claims, wherein said receptacle (11) comprises control circuitry (20), the control circuitry (20) arranged to be powered by at least one battery cell arranged to be enclosed by said battery cell enclosure (12).

12. The electric lifting trolley (1) according to claim 11, wherein the battery cell enclosure (12) comprises a contact interface, wherein upon fitting said battery cell enclosure to said cavity, said contact interface is arranged to electrically connect to a correspondingcontact interface of said receptacle (11), thereby powering said control circuitry (20).

13. The electric lifting trolley (1) according to any one of the preceding claims, wherein said upper surface (11a) of said receptacle (11) form an angle of 100-130 degrees relative said vertical axis (yl), preferably 105-120 degrees, more preferably 105-115 degrees.

14. A battery bracket arrangement (10) arranged to connect to an electric lifting trolley (1) to power said electric trolley (1), the battery bracket arrangement (10) comprising: a receptacle (11) a battery cell enclosure (12), wherein the receptacle (11) is arranged to attach to a frame (2) of said electric trolley (1), wherein the receptacle (11) comprises an upper and lower surface (11a, lib) defining a cavity therebetween, wherein the battery cell enclosure (12) is arranged to be fitted in said cavity by lateral movement relative said receptacle (11).

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