A portable energy storage device

Abstract

The present invention discloses a portable energy storage device, comprising a plurality of separately arranged energy storage components, wherein at least one of the plurality of energy storage components is a battery component and at least one is a control component, and the battery component and the control component are electrically connected via wires; any two energy storage components can be stacked on each other. The present invention separates the control component and the battery component so that the weight of the entire energy storage device is decomposed into at least two parts. When actually used outdoors, the portable energy storage device can be distributed to multiple people to carry, avoiding the problem of carrying difficulties caused by the excessive weight of high-endurance mobile power supplies currently on the market, and facilitating outdoor transportation; at the same time, multiple battery components can also be stacked on each other, so that multiple battery components can be carried, and the battery life of the energy storage device can be improved by quickly replacing the battery components through a battery-swap solution, meeting the user's demand for high-power electrical appliances, thereby allowing the energy storage device to simultaneously meet the requirements of portability, weight reduction, and improved endurance.

Description

Technical Field

[0001] The present invention relates to the technical field of outdoor power supplies, and in particular to a portable energy storage device. Background Art

[0002] In recent years, with the popularity of outdoor sports, outdoor camping has become increasingly popular among the general public. With economic development, people's outdoor camping is no longer limited to setting up a tent and lighting a bonfire. Instead, they expect to be able to use various household appliances outdoors. Therefore, some mobile energy storage devices have appeared on the market. Although these devices can meet people's demand for using household appliances outdoors, the mobile energy storage devices currently on the market have the following shortcomings:

[0003] 1. The overall product weight is heavy, which makes it very bulky and inconvenient to carry when used outdoors;

[0004] 2. The battery storage energy is usually 1KWh, which is difficult to meet the high endurance required by the current market;

[0005] That is, the overall weight of the mobile energy storage devices currently on the market is too heavy, making it difficult to simultaneously meet the requirements of high endurance, portability, and weight reduction. Therefore, a new portable energy storage device is urgently needed to meet the new market demands. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a portable energy storage device that can simultaneously meet the requirements of portability, weight reduction and improved endurance.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A portable energy storage device comprises a plurality of separately arranged energy storage components, wherein at least one of the plurality of energy storage components is a battery component and at least one is a control component, and the battery component and the control component are electrically connected via wires;

[0009] Any two of the energy storage assemblies can be stacked on each other.

[0010] The beneficial effects of the present invention are: a portable energy storage device, in which the control component and the battery component are separately arranged, so that the weight of the entire energy storage device is decomposed into at least two parts. When actually used outdoors, the portable energy storage device can be distributed to multiple people to carry, avoiding the problem of difficulty in carrying caused by the excessive weight of high-endurance mobile power supplies on the current market, so as to facilitate outdoor transportation; at the same time, multiple battery components can also be stacked on each other, so that multiple battery components can be carried, and the battery life of the energy storage device can be improved by quickly replacing the battery components through a battery replacement solution, meeting the user's demand for high-power electrical appliances, so that the energy storage device can meet the requirements of portability, weight reduction and improved endurance at the same time; and after being stacked on each other, the appearance is beautiful and neat, and the area occupied is small, meeting the various storage and usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A stacking conceptual diagram of a portable energy storage device according to an embodiment of the present invention;

[0012] Figure 2 This is an electrical schematic diagram of a portable energy storage device according to an embodiment of the present invention;

[0013] Figure 3 A conceptual diagram of stacking another portable energy storage device according to an embodiment of the present invention;

[0014] Figure 4 A schematic diagram of stacking a portable energy storage device according to an embodiment of the present invention;

[0015] Figure 5 This is another stacking diagram of a portable energy storage device according to an embodiment of the present invention;

[0016] Figure 6 A schematic diagram of the structure of the upper panel of the control assembly involved in an embodiment of the present invention;

[0017] Figure 7 A schematic diagram of the structure of the control assembly related to the lower panel in an embodiment of the present invention;

[0018] Figure 8 A schematic diagram of the structure of a side panel of a control assembly according to an embodiment of the present invention;

[0019] Figure 9 A schematic structural diagram of a side panel of a battery assembly according to an embodiment of the present invention;

[0020] Figure 10 for Figure 4 The main view;

[0021] Figure 11 for Figure 10 Schematic diagram of the cross section along line AA;

[0022] Figure 12 for Figure 11 Schematic diagram of the enlarged area B.

[0023] Description of labels:

[0024] 1. Energy storage components;

[0025] 1a. Battery assembly;

[0026] 1b. Control components;

[0027] 11. Upper panel; 111. Rotating shaft; 112. Rotating handle; 113. Arc-shaped convex portion; 114. Annular boss; 115. Decorative boss; 116. Positioning groove; 117. U-shaped groove;

[0028] 12. Lower panel; 121. Arc groove; 122. Support seat; 123. Protrusion; 124. Heat dissipation hole;

[0029] 13. Side panel; 131. AC component; 132. Display screen; 133. Auxiliary charging port; 134. Switch component; 135. Output component; 136. AC power socket; 137. Control connector; 138. Second connector. DETAILED DESCRIPTION

[0030] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0031] Please refer to Figures 1 to 12 A portable energy storage device includes a plurality of separately arranged energy storage components, at least one of the plurality of energy storage components is a battery component and at least one is a control component, the battery component and the control component are electrically connected by wires; any two of the energy storage components can be stacked on each other.

[0032] From the above description, it can be seen that the beneficial effects of the present invention are: the control component and the battery component are set separately, so that the weight of the entire energy storage device is decomposed into at least two parts. When actually used outdoors, the portable energy storage device can be distributed to multiple people to carry, avoiding the problem of carrying difficulties caused by the excessive weight of high-endurance mobile power supplies on the current market, so as to facilitate outdoor transportation; at the same time, multiple battery components can also be stacked on each other, so that multiple battery components can be carried, and the battery life of the energy storage device can be improved by quickly replacing the battery components through a battery replacement solution, meeting the user's demand for high-power electrical appliances, so that the energy storage device can meet the requirements of portability, weight reduction and improved endurance at the same time; and after being stacked on each other, the appearance is beautiful and neat, and the area occupied is small, which meets the user's various storage and usage needs.

[0033] Furthermore, the four side surfaces of any two of the energy storage assemblies are flush one by one after being stacked.

[0034] From the above description, it can be seen that the four sides of the energy storage assembly are flush one by one after being stacked, so that the energy storage device occupies a small area when stacked and used, thereby meeting the user's various storage and usage needs, thereby making the energy storage device of this application more portable.

[0035] Furthermore, the energy storage assembly includes a rotating shaft arranged on the central axis of the upper panel and a U-shaped rotating handle, wherein the U-shaped profile of the rotating handle is adapted to the side edge of the upper panel;

[0036] The U-shaped ends of the rotating handle are rotatably connected to the two ends of the rotating shaft respectively.

[0037] As can be seen from the above description, the U-shaped rotating handle makes it easier for users to carry, thereby further improving its portability.

[0038] Furthermore, the U-shaped ends of the rotating shaft and the rotating handle form an arc-shaped convex portion, and the lower panel of the energy storage assembly is provided with an arc-shaped groove adapted to the arc-shaped convex portion;

[0039] When two energy storage assemblies are stacked on each other, the arc-shaped groove of the upper energy storage assembly is located on the arc-shaped protrusion of the lower energy storage assembly.

[0040] From the above description, it can be seen that when two energy storage components are stacked on each other, the arc-shaped groove of the upper energy storage component is located on the arc-shaped convex portion of the lower energy storage component, thereby utilizing the arc-shaped convex portions at both ends of the U-shape of the rotating shaft and the rotating handle to achieve positioning, without the need to set a separate positioning structure, with a simple structure, convenient positioning and reduced costs.

[0041] Furthermore, the upper panel of the energy storage assembly further includes an annular boss provided between the rotating shaft and the rotating handle, and a decorative boss provided on a side of the rotating shaft away from the rotating handle;

[0042] The annular boss and the decorative boss are both provided with positioning grooves;

[0043] The upper surfaces of the annular boss and the decorative boss are flush with the upper surface of the rotating handle except for the two ends;

[0044] The lower panel of the energy storage assembly is also provided with a plurality of support seats protruding from the lower panel for supporting purposes;

[0045] When two energy storage assemblies are stacked on each other, the support seat of the upper energy storage assembly abuts against the positioning groove of the lower energy storage assembly and there is a gap between the two energy storage assemblies except where the support seat abuts against the positioning groove.

[0046] As can be seen from the above description, the support seat protruding from the lower panel meets the need for the energy storage assembly to be placed separately. When two energy storage assemblies are stacked on each other, the support seats and positioning grooves of the two energy storage assemblies abut against each other, and a gap is maintained at all other positions except the abutment between the support seat and the positioning groove, so that the upper panel of the energy storage assembly only contacts the bottom surface of the support seat, thereby reducing the contact area of ​​the upper panel of the energy storage assembly when stacked to avoid scratching the surface treatment of the upper panel of the energy storage assembly. Among them, the upper surface of the annular boss and the decorative boss is flush with the upper surface of the rotating handle except for the two ends, so that the protruding height of the support seat can be reduced as much as possible while maintaining the gap to ensure the stability of the energy storage assembly when placed alone or stacked.

[0047] Furthermore, the support seat is a soft rubber support seat.

[0048] From the above description, it can be seen that when two energy storage components are stacked on each other, they only contact the upper panel of the other energy storage component through the soft rubber support seat, that is, the soft rubber can provide a certain friction force to ensure the stability of the stacking, and can further avoid scratching the surface treatment of the upper panel of the energy storage component.

[0049] Furthermore, the outer edges of the upper and lower panels of the energy storage assembly are both surrounded by protrusions, and the protrusion height of the protrusion on the lower panel is smaller than the protrusion height of the support seat on the lower panel;

[0050] When two energy storage assemblies are stacked on each other, the protrusion is horizontally projected onto the side surface of the rotating handle.

[0051] From the above description, it can be seen that two protrusions are provided to protect the rotating handle on the side, and at the same time the protruding height thereof is limited so as not to affect the energy storage assembly to meet the requirement of being placed separately through the support base.

[0052] Furthermore, the decorative boss is provided with a U-shaped groove, and the U-shaped groove is symmetrical in position to the U-shaped gap between the rotating handle and the annular boss.

[0053] From the above description, it can be seen that by providing a U-shaped groove, the decorative boss on the right side presents the effect of mutual cooperation between the rotating handle and the annular boss, so that the upper panel of the energy storage component forms a quasi-symmetrical shape, which facilitates the stacking of two energy storage components.

[0054] Furthermore, four support seats are evenly arranged on the lower panel of the energy storage component.

[0055] From the above description, it can be seen that the four evenly arranged support seats make the energy storage components more stable when placed alone or stacked.

[0056] Furthermore, an inverter is provided on the control assembly, and heat dissipation holes are provided on the lower panel and / or side panels of the control assembly.

[0057] From the above description, it can be seen that the inverter with high heat generation is set separately from the battery module with similarly high heat generation, and heat is dissipated through heat dissipation holes, thereby improving thermal management.

[0058] Furthermore, the control assembly is provided with a display screen and a plurality of first connectors on a side panel, and a mains socket and a control connector on another side panel;

[0059] The battery assembly is provided with a second connector on any side panel, and the control connector is electrically connected to the second connector via an electric wire.

[0060] From the above description, it can be seen that by providing a display screen and multiple connectors, the user's needs for charging and discharging in different application scenarios can be met.

[0061] The portable energy storage device of the present invention can be applied to various outdoor scenarios requiring energy storage devices, such as outdoor camping, outdoor concerts, or various activities and performances, etc. The following is an explanation through specific embodiments:

[0062] Please refer to Figures 1 to 12 , embodiment 1 of the present invention is:

[0063] A portable energy storage device includes a plurality of separately arranged energy storage components 1, wherein at least one of the energy storage components 1 is a battery component 1a and at least one is a control component 1b, and the battery component 1a and the control component 1b are electrically connected via wires.

[0064] Any two energy storage assemblies 1 can be stacked on each other, and the four side surfaces of any two energy storage assemblies 1 are flush with each other after being stacked.

[0065] like Figure 4 and Figure 5As shown, there are two energy storage components 1, including a control component 1b and a battery component 1a. Among them, any two of the above-mentioned energy storage components 1 can be stacked on each other, including the stacking of the control component 1b and the battery component 1a, the stacking of the battery components 1a not shown in the figure, and the stacking of the control components 1b not shown in the figure. Under normal circumstances, the energy storage component 1 includes a control component 1b and several battery components 1a. A control component 1b can only be connected to one battery component 1a to control one battery component 1a. When one of the battery components 1a is used up, it is replaced with another battery component 1a, that is, the battery component 1a is quickly replaced through the battery replacement solution to improve the battery life of the energy storage device and meet the user's demand for high-power electrical appliances.

[0066] like Figure 4 and Figure 5 As shown, in this embodiment, the control component 1b and a battery component 1a are stacked together through the appearance structure design to form a whole with the same cross-sectional size and four sides flush with each other, that is, the control component 1b and the battery component 1a are flush with each other in terms of length, width and height after being stacked, so as to achieve a better appearance. In addition, as Figures 6 to 9 It can be seen that the control assembly 1b and the battery assembly 1a can also be placed separately to meet the user's various storage and usage needs.

[0067] In this embodiment, not shown in the figure, the battery assembly 1a includes a battery module, and the control assembly 1b includes an inverter and a power control module. The lower panel 12 and left and right side panels 13 of the control assembly 1b are each provided with heat dissipation holes 124. These heat dissipation holes 124 are formed by a plurality of evenly arranged, obliquely arranged strip-shaped through-holes. This separates the inverter, which generates high heat, from the battery module, which also generates high heat. Heat is dissipated through the heat dissipation holes 124, thereby improving thermal management.

[0068] like Figures 6 to 9 It can be seen that the energy storage assembly 1 includes an upper panel 11, a lower panel 12 and a side panel 13. Figures 6 to 8 The energy storage component 1 is the control component 1b, which is provided with a display screen 132 and a plurality of first connectors on the side panel 13. The plurality of first connectors include an AC (Alternating Current) component 131, an auxiliary charging port 133, a switch component 134, an output component 135, a mains socket 136, and a control connector 137. The AC component 131, the auxiliary charging port 133, the switch component 134, and the output component 135 are arranged on the same side panel 13 around the display screen 132, and the mains socket 136 and the control connector 137 are arranged on the other side panel 13. Correspondingly, Figure 9The energy storage assembly 1 shown is a battery assembly 1a. Battery assembly 1a has a second connector 138 on either side panel 13. Control connector 137 is electrically connected to second connector 138 via a wire. When stacking battery assembly 1a and control assembly 1b, control connector 137 and second connector 138 can be placed in the same direction, eliminating the need for very long wires.

[0069] Among them, such as Figure 6 As shown, the AC component 131 includes two five-hole sockets; the auxiliary charging port 133 includes 12V vehicle charging, 48V wind turbine charging and 18V photovoltaic charging, which meet the charging needs of different scenarios; the switch component 134 includes a switch button; the output component 135 includes a 12V power output, a TYPE-C output component 135 and a USB output component 135, among which the output parameter of the TYPE-C output component 135 is 5A / 18W, and the output parameter of the USB output component 135 is 5V / 3A, which meets the output requirements of different scenarios.

[0070] Among them, the energy storage component 1 in this embodiment is a rectangular parallelepiped structure, and each side thereof has a certain arc transition. In other embodiments, the overall shape of the energy storage component 1 can be a cylinder, an elliptical cylinder, or a spherical body with upper and lower interfaces, etc.

[0071] in addition, Figure 8 and Figure 9 The shaded areas of the lower panel 12 and the side panels 13 are Figure 6 and Figure 7 Heat dissipation holes 124 are provided on the lower panel 12 and the side panels 13 .

[0072] Therefore, the control component 1b and the battery component 1a are set separately, so that the weight of the entire energy storage device is decomposed into at least two parts. When actually used outdoors, the portable energy storage device can be distributed to multiple people to carry, avoiding the problem of carrying difficulty caused by the excessive weight of high-endurance mobile power supplies on the current market, so as to facilitate outdoor transportation; at the same time, multiple battery components 1a can also be stacked on each other, so that multiple battery components 1a can be carried, and the battery component 1a can be quickly replaced through a battery replacement solution to improve the endurance of the energy storage device and meet the user's demand for high-power electrical appliances, so that the energy storage device can meet the requirements of portability, weight reduction and improved endurance at the same time.

[0073] Please refer to Figures 1 to 12 , the second embodiment of the present invention is:

[0074] A portable energy storage device, based on the above embodiment 1, further defines the stacking of two energy storage components 1:

[0075] like Figure 6As shown, the energy storage assembly 1 includes a rotating shaft 111 arranged on the central axis of the upper panel 11, a U-shaped rotating handle 112, an annular boss 114 arranged between the rotating shaft 111 and the rotating handle 112, and a decorative boss 115 arranged on the side of the rotating shaft 111 away from the rotating handle 112.

[0076] The U-shaped profile of the rotating handle 112 is adapted to the side edge of the upper panel 11 on which it is located. The two ends of the U-shape of the rotating handle 112 are rotatably connected to the two ends of the rotating shaft 111 respectively. The annular boss 114 and the decorative boss 115 are both provided with positioning grooves 116. The upper surfaces of the annular boss 114 and the decorative boss 115 are flush with the upper surface of the rotating handle 112 except for the two ends. At the same time, the decorative boss 115 is provided with a U-shaped groove 117. The U-shaped groove 117 is symmetrical in position with the U-shaped gap between the rotating handle 112 and the annular boss 114. Therefore, as Figure 6 As shown, the upper panel 11 of the energy storage assembly 1 has a certain symmetry, which not only enhances the aesthetics but also facilitates stacking by arranging two identical energy storage assemblies 1 in different orientations. For different types of energy storage assemblies 1, i.e., when two adjacent energy storage assemblies 1 are a control assembly 1b and a battery assembly 1a, the side panel 13 where the control connector 137 is located is located on the same side as the side panel 13 where the second connector 138 is located, facilitating wiring connections.

[0077] like Figure 4 and Figure 5 As shown, the positioning groove 116 on one side of the upper panel 11 of the control assembly 1b and the battery assembly 1a is written with the word "POWER BANK", which can be used for alignment and placement.

[0078] like Figures 10 to 12 As shown, the U-shaped ends of the rotating shaft 111 and the rotating handle 112 form an arc-shaped protrusion 113, and the lower panel 12 of the energy storage assembly 1 is provided with an arc-shaped groove 121 adapted to the arc-shaped protrusion 113, thereby playing a positioning role, without the need to set a separate positioning structure, the structure is simple, positioning is convenient, and the cost is reduced, and the overall appearance is better. It should be noted that the arc-shaped protrusion 113 can be formed by setting the U-shaped ends of the rotating shaft 111 and the rotating handle 112 slightly higher than the decorative boss 115. At the same time, the lower panel 12 of the energy storage assembly 1 is also provided with a number of support seats 122 protruding from the lower panel 12 for supporting purposes to meet the need for the energy storage assembly 1 to be placed separately.

[0079] like Figure 11 As shown, in this embodiment, the upper panel 11, the annular boss 114, the rotating shaft 111 and the decorative boss 115 are integrally formed.

[0080] like Figures 10 to 12It can be seen that when two energy storage assemblies 1 are stacked on top of each other, the arcuate groove 121 of the upper energy storage assembly 1 is located on the arcuate protrusion 113 of the lower energy storage assembly 1. At the same time, the support seat 122 of the upper energy storage assembly 1 abuts the positioning groove 116 of the lower energy storage assembly 1, and a gap is maintained between the two energy storage assemblies 1 except for the abutment between the support seat 122 and the positioning groove 116.

[0081] In this embodiment, four support seats 122 are evenly arranged on the lower panel 12 of the energy storage assembly 1, and all of them are soft rubber support seats 122. As a result, the upper panel 11 of the energy storage assembly 1 only contacts the bottom surface of the soft rubber support seat 122, thereby reducing the contact area of ​​the upper panel 11 of the energy storage assembly 1 when stacking, so as to avoid scratching the surface treatment of the upper panel 11 of the energy storage assembly 1.

[0082] like Figures 10 to 12 It can be seen that the outer edges of the upper panel 11 and the lower panel 12 of the energy storage component 1 are surrounded by protrusions 123. The protrusion height of the protrusion 123 on the lower panel 12 is less than the protrusion height of the support seat 122 on the lower panel 12. When the two energy storage components 1 are stacked on each other, the protrusion 123 is horizontally projected onto the side of the rotating handle 112, so that the two protrusions 123 protect the rotating handle 112 on the side, while not affecting the energy storage component 1 through the support seat 122 to meet the requirement of separate placement.

[0083] In addition, in combination with Example 1 and Example 2, Figures 6 to 8 The schematic diagram of the structure of the upper panel 11, the lower panel 12 and the side panel 13 of the control assembly 1b is shown. However, in this embodiment, the external connection structure of the upper panel 11 and the lower panel 12 of the battery assembly 1a is the same as the external connection structure of the upper panel 11 and the lower panel 12 of the control assembly 1b. Figure 4 and Figure 9 It can also be directly derived from the above, and the internal connection structure of the upper panel 11 and the lower panel 12 of the two is related to the modules respectively included, and this embodiment does not make further limitations.

[0084] Therefore, in this embodiment, during actual outdoor activities, each energy storage component 1 can be assigned to different people to carry, wherein at least one control component 1b and a battery component 1a required according to actual needs are included, such as Figure 4 and Figure 5 When multiple users carry the energy storage assembly 1 outdoors by rotating the handle 112, they can Figure 4 or Figure 5Alternatively, the battery assembly 1a, control assembly 1b, and battery assembly 1a can be stacked in a cross-stacked arrangement. Adjacent energy storage assemblies 1 are aligned side-by-side using the markings, and stacking is achieved through the positioning fit of the arcuate groove 121 and the arcuate protrusion 113, and the abutment fit of the support base 122 and the positioning groove 116, forming a single unit with uniform cross-sectional dimensions and flush sides. At this point, a wire connects the control connector 137 on the control assembly 1b to the second connector 138 on the currently charged battery assembly 1a. The user then selects the corresponding plug from the multiple first connectors near the display screen 132 based on their charging and discharging needs to connect the various electrical devices normally.

[0085] In summary, the portable energy storage device provided by the present invention has the following advantages:

[0086] (1) The control component and the battery component are separated so that the weight of the entire energy storage device is decomposed into at least two parts. When used outdoors, the portable energy storage device can be distributed to multiple people to carry, thus avoiding the problem of the heavy weight of the high-endurance mobile power supply currently on the market causing the difficulty in carrying, and facilitating outdoor transportation;

[0087] (2) Multiple battery modules can also be stacked on top of each other, making it possible to carry multiple battery modules and quickly replace battery modules through a battery swap solution to improve the battery life of the energy storage device and meet the user's demand for high-power electrical appliances;

[0088] (3) At the same time, the four sides of the energy storage assembly are flush with each other after being stacked, so that the energy storage device occupies a small area when stacked, thereby meeting the various storage and use needs of users;

[0089] (4) The positioning of the arc-shaped groove and the arc-shaped convex portion does not require a separate positioning structure, which makes the structure simple, convenient for positioning, and reduces costs;

[0090] (5) The support seat and the positioning groove abut against each other, and a gap is maintained at all positions except the abutment between the support seat and the positioning groove, so that the upper panel of the energy storage component only contacts the bottom surface of the soft rubber support seat to avoid scratching the surface treatment of the upper panel of the energy storage component;

[0091] (6) The outer edges of the upper and lower panels of the energy storage assembly are surrounded by protrusions. After the control assembly and the battery assembly are stacked, the protrusions protect the rotating handle on the side and further optimize the overall appearance after stacking. At the same time, it does not affect the energy storage assembly to meet the need for separate placement through the support base.

[0092] That is, the portable energy storage device provided by the present invention simultaneously meets the requirements of portability, easy storage, weight reduction, improved battery life, easy assembly and durability.

[0093] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A portable energy storage device, characterized in that: The system comprises a plurality of separately arranged energy storage components, each of which comprises a control component and a plurality of battery components; wherein one control component is connected to only one battery component to control the battery component, and when one battery component runs out of power, it is replaced by another battery component; The control assembly is provided with a display screen and a plurality of first connectors on one side panel, and a mains socket and a control connector on the other side panel; The battery assembly is provided with a second connector on any side panel, and the control connector is electrically connected to the second connector via an electric wire; Any two of the energy storage components can be stacked on each other, including the control component and the battery component stacked on each other; The energy storage assembly includes a rotating shaft arranged on the central axis of the upper panel and a U-shaped rotating handle, wherein the U-shaped profile of the rotating handle is adapted to the side edge of the upper panel; The U-shaped ends of the rotating handle are rotatably connected to the two ends of the rotating shaft respectively; The U-shaped ends of the rotating shaft and the rotating handle form an arc-shaped convex portion, and the lower panel of the energy storage assembly is provided with an arc-shaped groove adapted to the arc-shaped convex portion; When two energy storage assemblies are stacked on each other, the arc-shaped groove of the upper energy storage assembly is located on the arc-shaped convex portion of the lower energy storage assembly; The upper panel of the energy storage assembly further includes an annular boss disposed between the rotating shaft and the rotating handle, and a decorative boss disposed on a side of the rotating shaft away from the rotating handle; The annular boss and the decorative boss are both provided with positioning grooves; The upper surfaces of the annular boss and the decorative boss are flush with the upper surface of the rotating handle except for the two ends; The lower panel of the energy storage assembly is also provided with a plurality of support seats protruding from the lower panel for supporting purposes; When two energy storage assemblies are stacked on each other, the support seat of the upper energy storage assembly abuts against the positioning groove of the lower energy storage assembly, and a gap is maintained at all positions of the two energy storage assemblies except where the support seat abuts against the positioning groove; The outer edges of the upper panel and the lower panel of the energy storage assembly are both surrounded by protrusions, and the protrusion height of the protrusion on the lower panel is smaller than the protrusion height of the support seat on the lower panel; When two energy storage assemblies are stacked on each other, the protrusion is horizontally projected onto the side surface of the rotating handle.

2. A portable energy storage device according to claim 1, characterized in that: The four side surfaces of any two energy storage assemblies are flush with each other after being stacked.

3. A portable energy storage device according to claim 1, characterized in that: The support seat is a soft rubber support seat.

4. A portable energy storage device according to claim 1, characterized in that: Four support seats are evenly arranged on the lower panel of the energy storage component.

5. A portable energy storage device according to any one of claims 1 to 4, characterized in that: The control assembly is provided with an inverter, and the lower panel and / or the side panel of the control assembly are provided with heat dissipation holes.

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