A robotic battery

Abstract

This utility model discloses a robot battery, including an upper shell, a lower shell, a cell assembly, and a BMS mainboard. The cell assembly is placed inside the lower shell and electrically connected to the BMS mainboard. The upper shell and the lower shell are connected to form a battery structure. One end of the lower shell has a protrusion with a hole. The charging / discharging interface is installed facing downwards at the hole and electrically connected to the BMS mainboard. A limiting guide groove is provided on the outer surface of the side wall of the lower shell, which corresponds to and cooperates with a limiting strip provided inside the robot battery cavity. The upper shell is provided with a retractable locking tongue mechanism, which corresponds to and cooperates with a locking groove provided inside the robot battery cavity. The battery structure formed after the upper shell and the lower shell are connected is locked inside the robot battery cavity by the locking tongue mechanism. This solves the problem of low robot battery swapping efficiency, improves battery swapping efficiency, and achieves precise mating of the male and female connectors, reducing the risk of connector damage.

Description

Technical Field

[0001] This utility model relates to the field of robotics, and more particularly to a robot battery. Background Technology

[0002] Currently, the robotics industry is developing rapidly, especially with the increasing number of humanoid robots and robotic dogs. Battery products, which power these robots, have become a key component, and their performance directly affects the robot's working time, efficiency, and overall performance. As robotics technology continues to advance, the requirements for batteries are also increasing, and traditional robot batteries can no longer meet these requirements, mainly in the following aspects: Firstly, most humanoid robots use an integrated built-in battery pack, which is directly connected to the power source for charging and discharging. The long power cord is not aesthetically pleasing, and care must be taken to avoid the wire harness during motion control reinforcement learning. At the same time, it will also affect the working efficiency of the humanoid robot. Secondly, some traditional robots use replaceable batteries. Due to the weight of the batteries, tools such as chucks are needed to remove them during replacement, which is a cumbersome and time-consuming process. When reinstalling, the male and female connectors are prone to misalignment, which may damage the connectors. Thirdly, traditional battery packs have poor thermal management performance and poor heat dissipation paths, usually relying on the outer casing for natural heat dissipation, which leads to serious heat accumulation and uneven temperature control, thus affecting battery life and performance. Fourthly, traditional battery packs have low reliability of circuit connections, low space utilization, easy loosening of internal connections, easy damage to battery cells and PCB boards due to vibration and impact, and insufficient shell strength which can easily cause deformation, resulting in a variety of defects. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a robot battery.

[0004] The technical solution of this utility model is as follows: A robot battery includes an upper housing, a lower housing, a cell assembly, and a BMS mainboard. The cell assembly is placed inside the lower housing and electrically connected to the BMS mainboard. The upper housing and the lower housing are connected to form a battery structure. The top edge of one end of the lower housing extends outward to form a protrusion. A hole for accommodating the charging and discharging interface is provided in the protrusion. The charging and discharging interface is installed with its opening facing downward in the hole and is electrically connected to the BMS main board. A limiting guide groove extending in the vertical direction is provided on the outer surface of the side wall of the lower housing. The limiting guide groove corresponds to and cooperates with the limiting strip provided inside the robot battery cavity. The upper housing is provided with a locking tongue mechanism that can be elastically extended and retracted. The locking tongue mechanism corresponds to and cooperates with the locking groove provided inside the robot battery cavity. The battery structure formed by the connection of the upper housing and the lower housing is locked inside the robot battery cavity by the locking tongue mechanism.

[0005] As a preferred embodiment of this utility model, the upper housing is symmetrically provided with two locking tongue mechanisms.

[0006] As a preferred embodiment of this invention, the locking tongue mechanism includes a slider and a spring, the slider being slidably connected to the upper housing, and the spring providing an elastic force to the slider.

[0007] As a preferred embodiment of this utility model, the top of the slider is provided with a protruding structure, and a groove for accommodating a finger is provided at the protruding structure. The upper housing is provided with a sliding channel for accommodating the slider. The side wall of the upper housing is provided with an opening one corresponding to the sliding channel and for the front end of the slider to extend out. The top of the upper housing is provided with an opening two corresponding to the sliding channel and for the protruding structure of the slider to extend out. The spring is provided between the inner side wall of the sliding channel away from the first opening and the rear end of the slider, and is used to drive the slider to slide along the sliding channel.

[0008] As a preferred embodiment of this invention, the rear end of the slider is provided with a spring limiting groove for limiting the spring, ensuring that the spring releases its elastic force along its axial direction.

[0009] As a preferred embodiment of this utility model, the BMS mainboard is disposed between the battery cell assembly and the upper housing, and a heat sink is disposed between the BMS mainboard and the upper housing, the heat sink being connected to the BMS mainboard.

[0010] As a preferred embodiment of this invention, a slider pressure plate is installed on the top of the heat sink. The slider pressure plate is used to support the slider sliding. The slider pressure plate is installed in close contact with the heat sink, which not only prevents the battery cell assembly and BMS motherboard from shaking up and down, but also plays a role in heat conduction and heat dissipation, and makes the overall structure more compact and reliable.

[0011] As a preferred embodiment of this invention, a heat insulation layer is provided between the BMS motherboard and the battery cell assembly to prevent the temperature of the battery cell assembly from being conducted to the BMS motherboard and triggering over-temperature protection.

[0012] As a preferred embodiment of this utility model, the BMS motherboard is provided with a switch button and several indicator lights, and the upper housing is provided with multiple through holes that correspond to and cooperate with the switch button and several indicator lights respectively. The switch button and several indicator lights are respectively installed at their respective through holes.

[0013] As a preferred embodiment of this invention, the lower housing is provided with a heat dissipation area, in which multiple heat dissipation holes are arranged, and a honeycomb cover for filtering air is provided inside the heat dissipation area to prevent dust from entering and affecting electronic components.

[0014] As a preferred embodiment of this invention, two heat dissipation areas are provided, located at both ends of the lower housing, so as to form a current flow to dissipate heat from the battery cell assembly when necessary.

[0015] As a preferred embodiment of the present invention, the battery cell assembly includes at least two battery cell units connected in series, each battery cell unit includes at least two battery cells connected in parallel, and the arrangement of the at least two battery cell units connected in series is maintained by a battery holder, and adjacent battery cell units are electrically connected in series by a sheet-like conductive material.

[0016] As a preferred embodiment of this invention, the series-connected sheet conductive material near the BMS motherboard is provided with tabs and electrically connected to the BMS motherboard through the tabs, while the series-connected sheet conductive material away from the BMS motherboard is electrically connected to the BMS motherboard through wires. The tabs and wires are designed to detect the voltage at relevant locations. The fact that part of the series-connected sheet conductive material is directly electrically connected to the BMS motherboard through the tabs can effectively reduce the laying of wires, improve the utilization of lateral space, and save the trouble of wiring.

[0017] As a preferred embodiment of this invention, the electrode extends vertically and then bends 90 degrees to weld with the BMS motherboard to form an electrical connection, which not only improves the utilization of vertical space but also ensures the stability of the BMS motherboard.

[0018] As a preferred embodiment of this invention, the negative terminal of at least two battery cells connected in series is electrically connected to the BMS mainboard via a negative electrode sheet-like conductive material. The negative electrode sheet-like conductive material extends vertically and is then bent at 90 degrees to form an electrical connection with the BMS mainboard. The positive terminal of at least two battery cells connected in series is electrically connected to the BMS mainboard via a positive electrode sheet-like conductive material. The positive electrode sheet-like conductive material extends horizontally and is then bent to an adjacent side, and then electrically connected to the BMS mainboard via a positive electrode conductive post. The bending of the positive electrode sheet-like conductive material to an adjacent side after extending horizontally can avoid and keep away from some sheet-like conductive materials used in series, thus preventing short circuits.

[0019] As a preferred embodiment of this invention, the positive electrode sheet-like conductive material has at least two extension arms. After extending horizontally, the at least two extension arms are bent to adjacent sides and then simultaneously electrically connected to the BMS motherboard through positive electrode conductive posts. By increasing the number of extension arms of the positive electrode sheet-like conductive material, the current carrying capacity is improved, enabling it to carry a larger current without overheating.

[0020] As a preferred embodiment of this utility model, the battery cell assembly further includes a pad, which is used to fill the empty space generated when at least two series-connected battery cell units are arranged and placed inside the lower housing. The pad serves a dual function of "physical limiting + performance protection". During transportation, vibration or when the housing is subjected to external impact, it can ensure that all battery cells are always in the designed arrangement position, avoid the impact of battery cell displacement on the physical connection reliability of the series circuit, and prevent problems such as misalignment of electrode welding and uneven stress on connecting wire harness caused by battery cell displacement.

[0021] The advantages of this utility model are: (1) The battery is locked inside the robot battery cavity by a locking tongue mechanism, and the battery can be inserted and removed with one hand, and replaced in seconds, improving the battery replacement efficiency and solving the problem of low battery replacement efficiency of the robot; at the same time, a limit guide groove and a charging and discharging anti-fool design are designed to achieve precise mating of the male and female heads of the connector and reduce the risk of connector damage.

[0022] (2) Heat dissipation holes are provided at both ends of the lower housing to form a flow passage for heat dissipation of the battery cell assembly, which improves the heat dissipation effect and is also conducive to the later installation of fans for air cooling. At the same time, a honeycomb cover is provided to prevent dust from entering and affecting electronic components. The thermal isolation + heat conduction design not only prevents the battery cell assembly and BMS motherboard from shaking up and down, but also plays a role in heat conduction and heat dissipation, and makes the overall structure more compact and reliable. A heat insulation layer is set between the BMS motherboard and the battery cell assembly to prevent the temperature of the battery cell assembly from being conducted to the BMS motherboard and triggering over-temperature protection.

[0023] (3) Some of the series-connected sheet conductive materials in the battery cell assembly are directly electrically connected to the BMS main board through tabs, which can effectively reduce the laying of wires, improve the utilization of horizontal space, and save the trouble of wiring. The tabs are extended vertically and then bent at 90 degrees to form an electrical connection with the BMS main board, which not only improves the utilization of vertical space, but also ensures the stability of the BMS main board. The positive electrode sheet conductive material in the battery cell assembly is extended horizontally and then bent to the adjacent side to avoid and stay away from some series-connected sheet conductive materials, thus avoiding short circuits. At the same time, by increasing the number of extension arms of the positive electrode sheet conductive material, the current carrying capacity is further improved, so that it can carry a larger current without overheating. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the present invention. Figure 1 ; Figure 3 This is a schematic cross-sectional view of the present invention. Figure 2 One of the sliders was hidden; Figure 4This is an exploded structural diagram of the present invention; Figure 5 This is a schematic diagram of the slider structure of this utility model; Figure 6 This is a schematic diagram of the battery cell assembly of this utility model; Figure 7 This is a schematic diagram of the series connection of the battery cell unit of this utility model.

[0025] Meaning of the reference numerals in the diagram: 1-Upper shell, 10-Sliding channel, 101-Opening 1, 102-Opening 2; 11-Slider, 111-Protruding structure, 112-Groove, 113-Spring limiting groove, 12-Spring; 2-Lower housing, 20-Protrusion, 21-Limiting guide groove, 22-Reinforcing rib, 23-Heat dissipation hole; 3-Cell pack, 30-Cell unit, 31-Cell, 32-Battery mounting bracket; 33-Series conductive sheet material, 34-Electrode tab, 35-Wire; 36 - Negative electrode sheet-like conductive material; 37 - Positive electrode sheet-like conductive material; 38 - Positive electrode conductive pillar; 39 - Extension arm, 310 - Pad; 4-BMS mainboard, 41-Power switch, 42-Indicator light; 5-Charging / discharging interface, 6-Heat sink, 7-Slider pressure plate, 8-Insulation layer, 9-Honeycomb cover. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 6As shown, this embodiment is a robot battery, including an upper shell 1, a lower shell 2, a cell assembly 3, and a BMS mainboard 4. The cell assembly 3 is placed inside the lower shell 2 and electrically connected to the BMS mainboard 4. The upper shell 1 and the lower shell 2 are connected to form a battery structure. Specifically, the upper shell 1 and the lower shell 2 are connected by pre-embedded copper nuts and screws, which provides a certain degree of shock and impact resistance, reliable connection, high overall durability, and easy disassembly. In this embodiment, copper nuts are pre-embedded at the four corners of the upper shell 1. The top edge of one end of the lower shell 2 extends outward to form a protrusion 20, and a hole for accommodating the charging and discharging interface 5 is provided in the protrusion 20 for charging and discharging. The electrical interface 5 is installed with its opening facing downwards at the hole and is electrically connected to the BMS mainboard 4. The protrusion 20 of the lower housing 2 constitutes a charging and discharging error prevention design. A limiting guide groove 21 extending vertically is provided on the outer surface of the side wall of the lower housing 2. The limiting guide groove 21 corresponds to the limiting strip provided inside the robot battery cavity. When the battery is put into the robot battery cavity, the limiting strip inside the robot battery cavity is just embedded in the limiting guide groove 21, which forms a guiding and limiting effect on the battery. In this embodiment, limiting guide grooves 21 are respectively provided at both ends of the lower housing 2. Through the limiting guide grooves 21 and the charging and discharging error prevention design, the male and female heads of the connectors are accurately mated, reducing the risk of connector damage.

[0028] In this embodiment, the upper shell 1 and the lower shell 2 are made of ABS material injection molding (containing butadiene-based material), which has good impact strength and toughness and can withstand instantaneous impact and falls during the robot's operation and control process; the lower shell 2 uses reinforcing ribs 22 to cooperate with the battery cell assembly 3 to form a tight fit, thereby ensuring that the battery cell assembly 3 will not sway from side to side.

[0029] In this embodiment, a locking tongue mechanism that can elastically extend and retract is provided in the upper housing 1. The locking tongue mechanism corresponds to and cooperates with the locking groove provided inside the robot battery cavity. The battery structure formed after the upper housing 1 and the lower housing 2 are connected is locked inside the robot battery cavity by the locking tongue mechanism.

[0030] To facilitate one-handed insertion and removal, this embodiment features two locking tongue mechanisms symmetrically arranged on the upper housing 1; enabling one-handed insertion and removal of the battery, allowing for replacement in seconds, improving battery swapping efficiency, and solving the problem of low battery swapping efficiency in robots.

[0031] This embodiment's locking mechanism includes a slider 11 and a spring 12. The slider 11 is slidably connected to the upper housing 1, and the spring 12 provides an elastic force to the slider 11. A protruding structure 111 is provided on the top of the slider 11, and a groove 112 for accommodating fingers is provided at the protruding structure 111. The depth of the groove 112 is designed according to the thickness of an adult male's finger, so that the fingers can just fully hook onto the slider 11 to fully lift the entire battery. The edges of the groove 112 are designed with rounded corners to avoid cutting the hand. Figure 6As shown, the upper housing 1 is provided with a sliding channel 10 for accommodating the slider 11. The side wall of the upper housing 1 is provided with an opening 101 corresponding to the sliding channel 10 and for the front end of the slider 11 to extend out. The top of the upper housing 1 is provided with an opening 102 corresponding to the sliding channel 10 and for the protrusion structure 111 of the slider 11 to extend out. The spring 12 is provided between the inner side wall of the sliding channel 10 away from the opening 101 and the rear end of the slider 11, and is used to drive the slider 11 to slide along the sliding channel 10. A spring limiting groove 113 is provided at the rear end of the slider 11 to limit the spring 12 and ensure that the spring 12 releases its elastic force along its axial direction. In this embodiment, two springs 12 are provided at the rear end of each slider 11.

[0032] When it is necessary to remove the battery from the robot's battery compartment, the user hooks the sliders 11 of the two locking tongue mechanisms with their hand and applies force to make the sliders 11 of the two locking tongue mechanisms slide closer to each other. The front end of the slider 11 retracts into the sliding channel 10, disengages from the locking groove inside the robot's battery compartment, and is lifted upwards to remove the battery.

[0033] When it is necessary to install the battery into the robot's battery compartment, the user hooks the sliders 11 of the two locking tongue mechanisms, lifts and places the battery into the robot's battery compartment. Under the action of the limiting guide groove 21, the charging and discharging interface 5 is precisely inserted into the connector inside the robot's battery compartment. Then, the user releases the hand, and the sliders 11 of the locking tongue mechanism rebound under the action of the spring 12, pushing the sliders 11 so that the front end of the sliders 11 is inserted into the locking groove inside the robot's battery compartment and remains inserted, thereby locking the battery inside the robot's battery compartment through the locking tongue mechanism.

[0034] The slider 11 of the locking tongue mechanism has a sloping front end, which facilitates the insertion of the battery into the robot's battery cavity.

[0035] In this embodiment, the BMS mainboard 4 is disposed between the battery cell assembly 3 and the upper housing 1, and a heat sink 6 is disposed between the BMS mainboard 4 and the upper housing 1. The heat sink 6 is connected to the BMS mainboard 4. Specifically, the heat sink 6 is fixed to the BMS mainboard 4 by welding copper pillars, and a thermally conductive silicone pad or thermally conductive grease is disposed between the BMS mainboard 4 and the heat sink 6 for heat conduction. The heat sink 6 is preferably made of aluminum alloy. A slider plate 7 is installed on the top of the heat sink 6 by screws. The slider plate 7 is used to support the sliding of the slider 11. The close fit between the slider plate 7 and the heat sink 6 can not only prevent the battery cell assembly 3 and the BMS mainboard 4 from shaking up and down, but also play a role in heat conduction and heat dissipation, and make the overall structure more compact and reliable. A heat insulation layer 8 is disposed between the BMS mainboard 4 and the battery cell assembly 3. The heat insulation layer 8 is preferably made of heat insulation cotton material, which is used to prevent the temperature of the battery cell assembly 3 from being conducted to the BMS mainboard 4 and triggering over-temperature protection.

[0036] In this embodiment, a switch button 41 and four indicator lights 42 are set on the BMS motherboard 4. The upper housing 1 is provided with five through holes that correspond to the switch button 41 and the four indicator lights 42 respectively. The switch button 41 and the four indicator lights 42 are respectively installed in their respective through holes. Of course, in actual applications, the number of indicator lights 42 can be increased or decreased as needed, and the indicator lights 42 can also be in the form of light guide columns.

[0037] In this embodiment, a heat dissipation area is provided in the lower housing 2, and multiple heat dissipation holes 23 are arranged in the heat dissipation area. A honeycomb cover 9 for filtering air is provided inside the heat dissipation area to prevent dust from entering and affecting electronic components. Specifically, there are two heat dissipation areas, which are located at both ends of the lower housing 2, so as to form a current flow to dissipate heat from the battery cell assembly 3 when necessary. It also facilitates the later addition of a fan for air cooling and improves heat dissipation efficiency.

[0038] like Figure 2 , Figure 6 and Figure 7 As shown, the battery cell assembly 3 includes at least two battery cell units 30 connected in series. Each battery cell unit 30 includes at least two battery cells 31 connected in parallel. The battery cell units 30 connected in series are arranged in a fixed order by the battery mounting bracket 32. Adjacent battery cell units 30 are electrically connected to each other by a series-connected sheet conductive material 33. The series-connected sheet conductive material 33 near the BMS mainboard 4 is provided with tabs 34 and is electrically connected to the BMS mainboard 4 through the tabs 34. The series-connected sheet conductive material 33 away from the BMS mainboard 4 is electrically connected to the BMS mainboard 4 through wires 35. The tabs 34 and wires 35 are designed to detect the voltage at relevant locations. Some of the series-connected sheet conductive material 33 is directly electrically connected to the BMS mainboard 4 through the tabs 34, which can effectively reduce the layout of wires 35, improve the utilization of lateral space, and save the trouble of wiring. The tabs 34 are extended vertically and then bent at 90 degrees to weld to the BMS mainboard 4 to form an electrical connection, which not only improves the utilization of longitudinal space but also ensures the stability of the BMS mainboard 4.

[0039] The negative terminal of at least two battery cells 30 connected in series is electrically connected to the BMS mainboard 4 via a negative electrode sheet conductive material 36. The negative electrode sheet conductive material 36 extends vertically and then bends 90 degrees to weld to the BMS mainboard 4 to form an electrical connection. The positive terminal of at least two battery cells 30 connected in series is electrically connected to the BMS mainboard 4 via a positive electrode sheet conductive material 37. The positive electrode sheet conductive material 37 extends horizontally and then bends to an adjacent side, and then connects to the BMS mainboard 4 via a positive electrode conductive post 38. The positive electrode sheet conductive material 37 extends horizontally and then bends to an adjacent side to avoid and move away from some series-connected sheet conductive materials 33, thus preventing short circuits.

[0040] like Figure 7As shown, in this embodiment, each battery cell unit 30 includes two parallel batteries 31, and a total of thirteen battery cell units 30 are connected in series to form a 48V power supply. In practical applications, each battery cell unit 30 may also include multiple parallel batteries 31, and the number of battery cell units 30 connected in series may also be adjusted according to voltage requirements to meet different usage needs.

[0041] In this embodiment, the positive electrode sheet conductive material 37 has two extension arms 39. After extending horizontally, the two extension arms 39 are bent to adjacent sides and then electrically connected to the BMS main board 4 through the positive electrode conductive post 38, thereby improving the current carrying capacity. In practical applications, the number of extension arms 39 of the positive electrode sheet conductive material 37 can also be increased according to needs and space conditions. By increasing the number of extension arms 39 of the positive electrode sheet conductive material 37, the current carrying capacity can be further improved, so that it can carry a larger current without overheating.

[0042] In this embodiment, copper sheets are used as the sheet conductive material. In practical applications, aluminum sheets, iron sheets, or other alloy conductive metals can also be used.

[0043] The battery cell assembly 3 in this embodiment also includes a pad 310. The pad 310 is used to fill the empty space generated when at least two series-connected battery cell units 30 are arranged and placed inside the lower housing 2. The pad 310 plays a dual role of "physical limiting + performance protection". When transported, vibrated or the housing is subjected to external impact, it can ensure that all battery cells 31 are always in the designed arrangement position, avoid the physical connection reliability of the series circuit affected by the offset of battery cells 31, and prevent problems such as misalignment of electrode welding and uneven stress on the connecting wire harness caused by the offset of battery cells 31.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "setting," and "forming" should be interpreted broadly; for example, they can refer to fixed connections or settings, detachable connections or settings, or integrated structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components; those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In the description of this utility model, references to terms such as "embodiment," "implementation," or "practical application" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment is included in at least one embodiment or implementation of this utility model; moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A robot battery, comprising an upper housing, a lower housing, a cell assembly, and a BMS mainboard, wherein the cell assembly is disposed inside the lower housing and electrically connected to the BMS mainboard, and the upper housing and the lower housing are connected to form a battery structure, characterized in that: The top edge of one end of the lower housing extends outward to form a protrusion. A hole for accommodating the charging and discharging interface is provided in the protrusion. The charging and discharging interface is installed with its opening facing downward in the hole and is electrically connected to the BMS main board. A limiting guide groove extending in the vertical direction is provided on the outer surface of the side wall of the lower housing. The limiting guide groove corresponds to and cooperates with the limiting strip provided inside the robot battery cavity. The upper housing is provided with a locking tongue mechanism that can be elastically extended and retracted. The locking tongue mechanism corresponds to and cooperates with the locking groove provided inside the robot battery cavity. The battery structure formed by the connection of the upper housing and the lower housing is locked inside the robot battery cavity by the locking tongue mechanism.

2. The robot battery according to claim 1, characterized in that, The upper housing is symmetrically equipped with two locking tongue mechanisms.

3. A robot battery according to claim 1 or 2, characterized in that, The locking mechanism includes a slider and a spring. The slider is slidably connected to the upper housing, and the spring is used to provide an elastic force to the slider.

4. A robot battery according to claim 3, characterized in that, The top of the slider is provided with a protruding structure, and a groove for accommodating a finger is provided at the protruding structure. The upper shell is provided with a sliding channel for accommodating the slider. The side wall of the upper shell is provided with an opening one corresponding to the sliding channel and for the front end of the slider to extend out. The top of the upper shell is provided with an opening two corresponding to the sliding channel and for the protruding structure of the slider to extend out. The spring is provided between the inner side wall of the sliding channel away from the first opening and the rear end of the slider, and is used to drive the slider to slide along the sliding channel.

5. A robot battery according to claim 4, characterized in that, The rear end of the slider is provided with a spring limiting groove for limiting the spring.

6. A robot battery according to claim 4 or 5, characterized in that, The BMS mainboard is located between the battery cell assembly and the upper casing, and a heat sink is provided between the BMS mainboard and the upper casing, with the heat sink connected to the BMS mainboard.

7. A robot battery according to claim 6, characterized in that, A slider pressure plate is installed on top of the heat sink, which is used to support the slider's movement.

8. A robot battery according to claim 1 or 7, characterized in that, A heat insulation layer is provided between the BMS motherboard and the battery cell assembly.

9. A robot battery according to claim 1, characterized in that, The BMS motherboard is equipped with a power switch and several indicator lights. The upper housing is equipped with multiple through holes that correspond to the power switch and several indicator lights, and the power switch and several indicator lights are respectively installed at their respective through holes.

10. A robot battery according to claim 1, characterized in that, The lower housing is provided with a heat dissipation area, in which multiple heat dissipation holes are arranged, and a honeycomb cover for filtering air is provided inside the heat dissipation area.

11. A robot battery according to claim 10, characterized in that, There are two heat dissipation areas, located at both ends of the lower housing.

12. A robot battery according to claim 1, characterized in that, The battery cell assembly includes at least two battery cell units connected in series, each battery cell unit includes at least two battery cells connected in parallel, and the arrangement of the at least two battery cell units connected in series is maintained by a battery holder, and adjacent battery cell units are electrically connected in series by a sheet-like conductive material.

13. A robot battery according to claim 12, characterized in that, The series-connected sheet-like conductive material near the BMS motherboard has tabs that are electrically connected to the BMS motherboard, while the series-connected sheet-like conductive material away from the BMS motherboard is electrically connected to the BMS motherboard via wires.

14. A robot battery according to claim 13, characterized in that, The electrode extends vertically and then bends 90 degrees to form an electrical connection with the BMS mainboard.

15. A robot battery according to any one of claims 12-14, characterized in that, The negative terminal of at least two battery cells connected in series is electrically connected to the BMS main board through a negative electrode sheet conductive material. The negative electrode sheet conductive material extends vertically and then bends 90 degrees to form an electrical connection with the BMS main board. The positive terminal of at least two battery cells connected in series is electrically connected to the BMS main board through a positive electrode sheet conductive material. The positive electrode sheet conductive material extends horizontally and then bends to the adjacent side, and then connects to the BMS main board through a positive electrode conductive post.

16. A robot battery according to claim 15, characterized in that, The positive electrode sheet-like conductive material has at least two extension arms. After extending horizontally, the at least two extension arms are bent to adjacent sides and then simultaneously electrically connected to the BMS motherboard through the positive electrode conductive post.

17. A robot battery according to any one of claims 12, 13, 14, and 16, characterized in that, The battery cell assembly also includes a pad for filling the empty space created when at least two battery cell units connected in series are arranged and placed inside the lower housing.

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