Battery frame, battery replacing device and electric vehicle

Abstract

The utility model relates to the technical field of electric vehicles, and provides a battery frame, a battery replacing device and an electric vehicle. Wherein the battery frame comprises a first frame assembly and at least one second frame assembly, the first frame assembly is provided with at least one layer of battery placement bin, the battery placement bin is used for storing batteries, and the first frame assembly is fixedly arranged on the bottom support; the second frame assembly is detachably arranged on the first frame assembly, and the second frame assembly is provided with at least one layer of battery containing bin. According to the utility model, the defect that the capacity of the battery frame in the prior art cannot be expanded according to the demand of electric quantity is overcome, and the assembled battery frame is realized, so that the battery frame can be assembled according to the demand of electric quantity, and various types of battery frames do not need to be produced.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a battery frame, a battery swapping device, and an electric vehicle. Background Technology

[0002] The battery pack of the battery swapping unit plays a crucial role in electric vehicles, providing space to house the battery pack and ensuring that they are securely installed in the vehicle to prevent displacement due to vibration or impact.

[0003] To meet market demands, electric vehicles have been developed with varying battery capacities. However, existing battery frames cannot be expanded to accommodate these capacities, necessitating the design, manufacture, and storage of multiple types of battery frames, significantly increasing companies' R&D and manufacturing costs. Utility Model Content

[0004] This utility model provides a battery frame, a battery swapping device, and an electric vehicle to solve the defect in the prior art that the battery frame cannot be expanded according to the power demand, and realizes an assemblable battery frame, which allows the battery frame to be assembled according to the power demand, without the need to produce multiple types of battery frames.

[0005] This utility model provides a battery frame, comprising:

[0006] The first frame assembly has at least one battery storage compartment for storing batteries, and the first frame assembly is fixedly mounted on the base.

[0007] At least one second frame assembly is detachably disposed on the first frame assembly, the second frame assembly having at least one layer of the battery mounting compartment.

[0008] According to the present invention, a battery frame is provided, wherein at least one end of the first frame assembly and the second frame assembly are provided with a disassembly port, the disassembly port being used to assemble the battery, and the disassembly port being provided in a one-to-one correspondence with the battery placement compartment.

[0009] According to the present invention, a battery frame is provided on the end face of the first frame assembly, and the first reinforcing beam on at least one end face is detachably connected to the first frame assembly. The first reinforcing beam is used to enhance the stability of the first frame assembly.

[0010] According to the present invention, a battery frame is provided on at least one side of the first frame assembly, and the second reinforcing beam is used to enhance the stability of the first frame assembly.

[0011] According to the present invention, a battery frame assembly includes:

[0012] Multiple first side vertical beams are arranged in an array at intervals and cooperate to form the first frame body;

[0013] Multiple first end beams are spaced apart at intervals along the height of the first side vertical beams on the end face of the first frame body;

[0014] Multiple first crossbeam frames are spaced apart at intervals along the height of the first side vertical beams inside the first frame body;

[0015] Multiple first central vertical beams are spaced apart between two adjacent first side vertical beams, and the multiple first central vertical beams surround the outside of the first horizontal beam frame.

[0016] According to the present invention, a battery frame assembly is provided, wherein the second frame assembly comprises:

[0017] Multiple second side vertical beams are respectively set at the top of the first side vertical beam, and the second side vertical beams cooperate to form the second frame body;

[0018] Multiple second end beams are spaced at intervals along the height of the second side vertical beams on the end face of the second frame body;

[0019] Multiple second crossbeams are spaced apart at intervals along the height of the second side vertical beams inside the second frame body;

[0020] Multiple second vertical beams are respectively installed at the top of the first vertical beam, and the multiple second vertical beams surround the outside of the second horizontal beam frame.

[0021] According to the battery frame provided by this utility model, the connection between the first vertical beam and the first horizontal beam is provided with reinforcing ribs.

[0022] According to the present invention, a battery frame is provided in which a connecting part is provided at the end of the second middle vertical beam away from the first middle vertical beam, the connecting part being used to connect a lifting component, and an installation notch is provided at the end of the second middle vertical beam near the first middle vertical beam, the installation notch being used to provide clearance space.

[0023] This utility model also provides a battery swapping device, including a battery frame as described in any of the above embodiments.

[0024] This utility model also provides an electric vehicle, including a battery frame or battery swapping device as described in any of the above embodiments.

[0025] The battery frame provided by this invention allows for adjustment of the overall battery frame capacity by adding or removing a second frame assembly, thereby meeting the different power requirements of various vehicle models. When a higher power capacity is needed, the user can expand the battery frame capacity by installing the second frame assembly; conversely, when the power demand is lower, the second frame assembly can be removed to reduce unnecessary weight and cost. This flexibility avoids the increased research and manufacturing costs associated with designing, manufacturing, and storing specific types of battery frames for each power demand.

[0026] The battery swapping device and electric vehicle provided by this utility model also have the above-mentioned beneficial effects because they include the aforementioned battery frame. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a perspective view of the battery frame provided by this utility model;

[0029] Figure 2 This is a side view of the battery frame provided by this utility model;

[0030] Figure 3 This is a front view of the battery frame provided by this utility model;

[0031] Figure 4 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 5 This is a perspective view of the battery swapping device provided by this utility model.

[0033] Figure label:

[0034] 100: First frame assembly; 110: First side vertical beam; 120: First end beam; 130: First crossbeam frame; 140: First middle vertical beam; 150: Second reinforcing beam; 160: Reinforcing rib; 170: Disassembly / assembly port; 180: First reinforcing beam;

[0035] 200: Second frame assembly; 210: Second side vertical beam; 220: Second end beam; 230: Second crossbeam frame; 240: Second middle vertical beam; 241: Connecting part; 242: Installation notch; 250: Lifting component;

[0036] 300: Battery;

[0037] 400: Base support. Detailed Implementation

[0038] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0039] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0041] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] The following is combined Figures 1-5 Describe the structure and working principle of this utility model.

[0044] Reference Figure 1 To adapt to the electric vehicle market with varying power requirements, this utility model provides a battery frame, comprising a first frame assembly 100 and at least one second frame assembly 200. The first frame assembly 100 is designed with at least one layer of battery storage compartments for storing batteries 300, and is fixedly mounted on a base 400. The second frame assembly 200 is detachably mounted on top of the first frame assembly 100, and also has at least one layer of battery storage compartments.

[0045] To achieve the advantages of lightweight and high strength, the material selection for the first frame assembly 100 and the second frame assembly 200 is crucial. Considering that the battery frame needs to have sufficient mechanical strength to protect the internal battery 300, and to minimize its own weight to improve the overall performance of the electric vehicle, the following materials can be selected for both: aluminum alloy, carbon fiber composite material, or magnesium alloy.

[0046] It should be noted that the specific materials chosen for the first frame assembly 100 and the second frame assembly 200 can be determined based on the actual situation. For example, carbon fiber composite materials can be preferred in applications that pursue ultimate performance; while aluminum alloy or magnesium alloy can be used when cost-effectiveness is a priority. However, regardless of the material, the first frame assembly 100 and the second frame assembly 200 can be ensured to be both robust and lightweight, meeting the stringent requirements of electric vehicles for battery frames.

[0047] In the above structure, this invention allows for adjustment of the overall battery frame capacity by adding or removing the second frame assembly 200, thereby meeting the different power requirements of different vehicle models. When a higher power capacity is needed, the user can expand the battery frame capacity by installing the second frame assembly 200; conversely, when the power demand is lower, the second frame assembly 200 can be removed to reduce unnecessary weight and cost. This flexibility avoids the increased research and manufacturing costs associated with designing, manufacturing, and storing specific types of battery frames for each power demand. Specifically, the first frame assembly 100 is designed to accommodate 282 kWh of power; adding a second frame assembly 200 expands the capacity to 350 kWh, and adding another second frame assembly 200 expands the capacity to 425 kWh.

[0048] Furthermore, because the battery frame is designed with modularity and scalability in mind, it not only simplifies the production process but also improves the efficiency of supply chain management. In this structure, companies can focus resources on mass production of a small number of standard components, rather than spreading their efforts across multiple customized models. Therefore, this solution effectively addresses the cost increases caused by diversified market demands, while maintaining product flexibility and adaptability, ensuring that companies remain competitive in a rapidly changing market environment.

[0049] In some possible embodiments, the first frame assembly 100 may be provided with a plurality of locating pins or similar fixing devices that mate with corresponding holes or grooves on the second frame assembly 200. When the second frame assembly 200 is installed onto the first frame assembly 100, the locating pins are inserted into the corresponding holes or grooves to initially determine the relative positions between the two and provide initial fixing. To ensure the strength and reliability of the connection, the second frame assembly 200 may also be provided with multiple fastener interfaces, such as bolt holes or snap-fit ​​structures, which, after being aligned with the corresponding interfaces on the first frame assembly 100, are used to tighten bolts or directly engage snap-fit ​​structures using external tools such as screwdrivers or wrenches to complete the final fixing process.

[0050] To facilitate disassembly, all bolts and clips used for securing the components in the aforementioned structure are designed in easily accessible locations, ensuring that operators can access these fasteners without removing other components. Furthermore, considering the potential wear from repeated installation and disassembly, the connection points are made of wear-resistant materials and have undergone surface treatment to extend service life and maintain good connection performance. This connection method not only ensures the stability of the second frame assembly 200 after installation but also simplifies the steps required for maintenance and adjustment, improving work efficiency.

[0051] Reference Figure 1 and Figure 2In some embodiments of this utility model, at least one end of the first frame assembly 100 and the second frame assembly 200 is provided with a disassembly port 170, which is used to assemble the battery 300, and the disassembly port 170 is provided in a one-to-one correspondence with the battery placement compartment.

[0052] In the above structure, each mounting / dismounting port 170 is designed to align with the corresponding battery compartment, allowing the battery 300 to be accurately inserted into or removed from its designated position via the mounting / dismounting port 170. This design not only simplifies the battery installation process but also improves replacement efficiency, which is especially important when rapid battery swapping is required. Due to the one-to-one correspondence between the mounting / dismounting port 170 and the battery compartment, it ensures that each battery 300 can be correctly positioned and secured, avoiding safety hazards or electrical connection problems caused by improper positioning.

[0053] Furthermore, the presence of the access port 170 facilitates routine maintenance and inspection. In this structure, technicians can easily access the batteries 300 within each battery compartment through the access port 170 to perform necessary inspections, repairs, or cleaning. This not only improves the convenience of maintenance but also ensures the long-term stable operation of the battery system. Therefore, the design of the access port 170 plays a crucial role in achieving the functionality and safety of the battery frame.

[0054] Reference Figure 2 In some embodiments of this utility model, the end face of the first frame assembly 100 is provided with a first reinforcing beam 180, and at least one end face of the first reinforcing beam 180 is detachably connected to the first frame assembly 100 by bolts. The first reinforcing beam 180 is used to enhance the stability of the first frame assembly 100. It can be understood that one end face of the first frame assembly 100 is detachably connected to the first reinforcing beam 180, and the other end face is welded to the corresponding first reinforcing beam 180. Alternatively, both end faces of the first frame assembly 100 may be detachably connected to the corresponding first reinforcing beam 180.

[0055] Specifically, the first frame assembly 100 has a cuboid structure, with its two narrower opposite faces serving as end faces. At least two first reinforcing beams 180 are provided, and the multiple first reinforcing beams 180 are staggered. When there are two first reinforcing beams 180, the two first reinforcing beams 180 are arranged in an X-shape. That is, the two first reinforcing beams 180 are respectively arranged along the two diagonals of the end faces of the first frame assembly 100.

[0056] In the above structure, this design increases the rigidity of the first frame assembly 100, effectively dispersing external forces and ensuring that the first frame assembly 100 remains stable under impact or vibration. The first reinforcing beam 180 is bolted together, making installation and disassembly simple, and facilitating maintenance and adjustment. More importantly, when the battery 300 needs to be replaced, the first reinforcing beam 180 can be removed to unblock the insertion / removal port 170, ensuring that the battery 300 can be smoothly inserted or removed.

[0057] Reference Figure 3 In some embodiments of this utility model, at least one side of the first frame assembly 100 is provided with a second reinforcing beam 150, which is used to enhance the stability of the first frame assembly 100. The second reinforcing beam 150 is installed in the first frame assembly 100 by welding. Multiple second reinforcing beams 150 are provided, and the multiple second reinforcing beams 150 are staggered. It should be noted that the first frame assembly 100 can be understood as... Figure 3 The front and back sides.

[0058] In the aforementioned structure, the design of the second reinforcing beam 150 not only improves the mechanical properties of the first frame assembly 100 but also addresses the potential structural strength deficiencies of traditional frames. Because the second reinforcing beams 150 are staggered, they create a mutual support effect, further enhancing the overall frame's resistance to deformation. This not only improves the safety and reliability of the battery frame but also provides better protection for the internal battery 300, preventing the risk of battery damage due to frame deformation.

[0059] Furthermore, by optimizing the number and layout of the second reinforcing beams 150, structural performance can be significantly improved without affecting the overall weight. This design allows for flexible adjustments to the configuration of the reinforcing beams according to different application scenarios to meet specific needs, such as higher strength requirements or lighter weight constraints. Therefore, this solution provides an effective method to improve the stability and durability of the first frame assembly 100, while ensuring that the high strength and lightweight requirements of electric vehicles for the battery frame are met.

[0060] Reference Figure 1In some embodiments of this utility model, the first frame assembly 100 includes a plurality of first side vertical beams 110, a plurality of first end beams 120, a plurality of first crossbeams 130, and a plurality of first middle vertical beams 140. The plurality of first side vertical beams 110 are arranged in an array at intervals and cooperate to form the first frame body; the plurality of first end beams 120 are spaced apart along the height of the first side vertical beams 110 on the end face of the first frame body; the plurality of first crossbeams 130 are spaced apart along the height of the first side vertical beams 110 inside the first frame body; the plurality of first middle vertical beams 140 are spaced apart between two adjacent first side vertical beams 110, and the plurality of first middle vertical beams 140 surround the outside of the first crossbeams 130.

[0061] In some specific embodiments, the first side vertical beam 110, the first end beam 120, the first crossbeam frame 130, and the first middle vertical beam 140 are welded together to form a cuboid frame structure. Specifically, there are four first side vertical beams 110 arranged in a rectangular array; there are also four first middle vertical beams 140 arranged in a rectangular array, located in the middle of the four first side vertical beams 110. The first end beam 120 and the first crossbeam frame 130 are both horizontally positioned, with the first end beam 120 extending along the width of the rectangle and the first crossbeam frame 130 extending along the length of the rectangle. Regarding size and shape: the first side vertical beams 110, the first end beams 120, and the first crossbeam frame 130 can be tubular structures with a diameter of 3mm, while the first middle vertical beam 140 can be a tubular structure with a diameter of 4mm. This arrangement allows for control of cross-sectional dimensions to ensure overall rigidity, effectively reducing the weight of the battery frame and lowering manufacturing costs.

[0062] It should be noted that the first end beam 120 and the first crossbeam frame 130 have multiple layers, each layer including one first crossbeam frame 130 and two first end beams 120. The two first end beams 120 are located at opposite ends of the first crossbeam frame 130. The first crossbeam frame 130 can specifically be a ladder structure. The space between two adjacent first crossbeam frames 130 constitutes a battery mounting compartment. The second reinforcing beam 150 is inclinedly disposed between the first side vertical beam 110 and the first middle vertical beam 140, or inclinedly disposed between two adjacent first middle vertical beams 140.

[0063] Reference Figure 1In some embodiments of this utility model, the second frame assembly 200 includes a plurality of second side vertical beams 210, a plurality of second end beams 220, a plurality of second crossbeams 230, and a plurality of second middle vertical beams 240. The plurality of second side vertical beams 210 are correspondingly disposed at the top of the first side vertical beams 110, and the second side vertical beams 210 cooperate to form the second frame body; the plurality of second end beams 220 are spaced apart along the height of the second side vertical beams 210 on the end faces of the second frame body; the plurality of second crossbeams 230 are spaced apart along the height of the second side vertical beams 210 inside the second frame body; the plurality of second middle vertical beams 240 are correspondingly disposed at the top of the first middle vertical beams 140, and the plurality of second middle vertical beams 240 surround the outer side of the second crossbeams 230.

[0064] Specifically, the configuration of the second frame assembly 200 can refer to the embodiment of the first frame assembly 100 described above, and will not be repeated here. The difference is that, since the top layer of the second frame assembly 200 experiences less stress, a C-beam structure can be used. This effectively reduces the weight of the second frame assembly 200 and also lowers manufacturing costs.

[0065] Reference Figure 3 In some embodiments of this utility model, a reinforcing rib 160 is provided at the connection between the first vertical beam 140 and the first horizontal beam 130. Specifically, the reinforcing rib 160 has an L-shaped structure.

[0066] In the above structure, a reinforcing rib 160 is provided at the connection between the first vertical beam 140 and the first horizontal beam 130. This design ensures the overall structural strength of the first frame assembly 100 by enhancing the rigidity and stability of the critical connection points. The reinforcing rib 160 effectively disperses the stress applied to the connection point, preventing local deformation or failure, thereby improving the durability and reliability of the entire frame.

[0067] Several considerations need to be taken into account when installing the reinforcing rib 160 to ensure its full functionality. First, the position of the reinforcing rib 160 should precisely correspond to the connection point between the first vertical beam 140 and the first horizontal beam 130 to ensure maximum reinforcement. Second, the material selection must match the main frame material to ensure that the welding or fixing method provides sufficient bonding strength and avoids connection problems caused by material incompatibility. Furthermore, the design of the reinforcing rib 160 should consider not affecting the installation and removal of other components; for example, it should not obstruct the insertion or removal path of the battery 300, nor allow maintenance personnel access to the internal structure.

[0068] Reference Figure 3In some embodiments of this utility model, the second middle vertical beam 240 is provided with a connecting part 241 at the end away from the first middle vertical beam 140. The connecting part 241 is used to connect the lifting component 250. The second middle vertical beam 240 is provided with an installation notch 242 at the end near the first middle vertical beam 140. The installation notch 242 is used to provide clearance space.

[0069] Specifically, the first vertical beam 140 has a threaded hole at its top, and the second vertical beam 240 also has a corresponding threaded hole at its bottom. When connecting the first vertical beam 140 and the second vertical beam 240, simply align the threaded holes and then install the bolts into the threads through the mounting notch 242. The connecting part 241 can also be a threaded hole, and the lifting component 250 can be an M20 bolt lug. When lifting is required, simply connect the lifting component 250 to the connecting part 241.

[0070] Reference Figure 5 The present invention also provides a battery swapping device, including a battery frame as described in any of the above embodiments.

[0071] This utility model also provides an electric vehicle, including a battery frame or battery swapping device as described in any of the above embodiments.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery frame, characterized by, include: The first frame assembly (100) has at least one battery storage compartment for storing batteries (300), and the first frame assembly (100) is fixedly disposed on the base (400). At least one second frame assembly (200) is detachably disposed on the first frame assembly (100), the second frame assembly (200) having at least one layer of the battery mounting compartment.

2. The battery frame of claim 1, wherein, At least one end of the first frame assembly (100) and the second frame assembly (200) is provided with a disassembly port (170), which is used to assemble the battery (300), and the disassembly port (170) is provided in a one-to-one correspondence with the battery placement compartment.

3. The battery frame of claim 2, wherein, The first frame assembly (100) has a first reinforcing beam (180) on its end face, and at least one end face of the first reinforcing beam (180) is detachably connected to the first frame assembly (100). The first reinforcing beam (180) is used to enhance the stability of the first frame assembly (100).

4. The battery frame of claim 3, wherein, The first frame assembly (100) has a second reinforcing beam (150) on at least one side, the second reinforcing beam (150) being used to enhance the stability of the first frame assembly (100).

5. The battery frame of claim 1, wherein, The first frame assembly (100) includes: Multiple first side vertical beams (110) are arranged in an array at intervals and cooperate to form the first frame body; Multiple first end beams (120) are spaced at intervals along the height of the first side vertical beam (110) on the end face of the first frame body; Multiple first crossbeam frames (130) are spaced apart at the height of the first side vertical beams (110) inside the first frame body; Multiple first central vertical beams (140) are spaced apart between two adjacent first side vertical beams (110), and the multiple first central vertical beams (140) surround the outside of the first crossbeam frame (130).

6. The battery frame of claim 5, wherein, The second frame assembly (200) includes: Multiple second side vertical beams (210) are respectively set at the top of the first side vertical beam (110), and the second side vertical beams (210) cooperate to form the second frame body; Multiple second end beams (220) are spaced at intervals along the height of the second side vertical beam (210) on the end face of the second frame body; Multiple second crossbeams (230) are spaced apart at the height of the second side vertical beams (210) inside the second frame body; Multiple second vertical beams (240) are respectively disposed at the top of the first vertical beam (140), and the multiple second vertical beams (240) surround the outside of the second crossbeam frame (230).

7. The battery frame according to claim 5 or 6, characterized in that, The connection between the first vertical beam (140) and the first horizontal beam (130) is provided with a reinforcing rib (160).

8. The battery frame of claim 6, wherein, The second middle vertical beam (240) is provided with a connecting part (241) at one end away from the first middle vertical beam (140), the connecting part (241) is used for connecting a hoisting part (250), and the second middle vertical beam (240) is provided with a mounting notch (242) at one end close to the first middle vertical beam (140), the mounting notch (242) is used for providing a avoiding space.

9. A battery replacing device, characterized by, A battery frame as claimed in any one of claims 1 to 8.

10. An electric vehicle characterized by comprising: A battery replacement device as claimed in claim 9, comprising a battery frame as claimed in any one of claims 1 to 8.

Images