Portable energy storage apparatus and energy storage system

Abstract

The present application discloses a portable energy storage apparatus and an energy storage system. The portable energy storage apparatus comprises a housing assembly, an energy storage unit, a fixing assembly and a control assembly. The housing assembly comprises a bottom housing and a top cover which are separately arranged. The energy storage unit is arranged inside the bottom housing and is of a cuboid structure. The energy storage unit has two small surface sides opposite to each other and two large surface sides opposite to each other. The fixing assembly and the control assembly are both arranged inside the bottom housing. The fixing assembly is at least partially arranged on the two large surface sides of the energy storage unit and clamps and fixes the energy storage unit. The fixing assembly is provided with a plurality of first positioning portions. The plurality of first positioning portions are detachably connected to the bottom housing. The control assembly is located on one small surface side of the energy storage unit and is electrically connected to the energy storage unit. The control assembly comprises a box body. The box body is provided with a plurality of first fixing portions. A plurality of second fixing portions protrude from the surfaces of the fixing assembly facing away from the large surface sides of the energy storage unit. The second fixing portions are detachably connected to the first fixing portions, so that the control assembly can be locked or unlocked.

Description

Portable energy storage devices and energy storage systems

[0001] Related cross-references

[0002] This application claims priority to Chinese Patent Application No. 2024111979207, filed on August 28, 2024, entitled “Portable Energy Storage Device and Energy Storage System”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of energy storage technology, and in particular to a portable energy storage device and energy storage system. Background Technology

[0004] In recent years, energy storage products have been used more and more widely, and the demand for portable energy storage devices has also increased. Portable energy storage devices have gained popularity among users due to their small size, light weight, and ease of movement.

[0005] In related technologies, a common practice is to wrap individual battery cells in elastic foam sheets before placing them into the casing of a portable energy storage device. The compressed foam sheets, sandwiched between the battery cells and the casing, then secure the cells. While this assembly method is simple, the compression of the foam is not high. In practical applications, portable energy storage devices often experience internal connection terminals becoming loose and electrical connections failing due to violent shaking, which significantly reduces the lifespan of the portable energy storage device. Summary of the Invention

[0006] In view of this, the portable energy storage device and energy storage system provided in the embodiments of this application are implemented as follows:

[0007] The first aspect of this application discloses a portable energy storage device, which has a length direction, a width direction, and a height direction, and includes:

[0008] The housing assembly includes a bottom shell and a top cover that are separately disposed along the height direction, wherein the height of the bottom shell is greater than the height of the top cover along the height direction;

[0009] An energy storage unit is disposed inside the bottom shell and has a cuboid structure. The energy storage unit has two small facets opposite each other along the length direction and two large facets opposite each other along the width direction.

[0010] A fixing component is disposed inside the bottom shell. The fixing component is at least partially located on two large-faced sides of the energy storage unit and clamps and fixes the energy storage unit. The fixing component has multiple first positioning parts, which are detachably connected to the bottom shell along the height direction.

[0011] A control component is disposed inside the bottom shell, located on the small side of the energy storage unit, and electrically connected to the energy storage unit. The control component includes a housing, which has a plurality of first fixing parts extending along the length direction close to the energy storage unit.

[0012] The fixing component has a plurality of second fixing parts protruding from the large side of the energy storage unit. The second fixing parts are detachably connected to the first fixing parts so that the control component can be locked close to the small side of the energy storage unit or separated from the small side of the energy storage unit along the height direction, and / or can be locked close to the small side of the energy storage unit or separated from the small side of the energy storage unit along the length direction.

[0013] The second aspect of this application discloses an energy storage system having a portable energy storage device as described in the first aspect above. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 is a schematic diagram of the structure of the portable energy storage device disclosed in the embodiments of this application;

[0016] Figure 2 is a structural schematic diagram of the portable energy storage device disclosed in the embodiments of this application from another perspective;

[0017] Figure 3 is an exploded structural diagram of the portable energy storage device disclosed in the embodiments of this application;

[0018] Figure 4 is a schematic diagram of the structure of the bottom shell, energy storage unit, control component, fixing component, and second sub-beam disclosed in the embodiment of this application;

[0019] Figure 5 is a schematic diagram of the structure of the energy storage unit, control component, and fixed component disclosed in the embodiments of this application;

[0020] Figure 6 is an exploded structural diagram of the energy storage unit, control component, and stationary component disclosed in the embodiments of this application;

[0021] Figure 7 is a schematic diagram of the bottom shell structure disclosed in an embodiment of this application;

[0022] Figure 8 is a structural schematic diagram of the first / second fastener disclosed in the embodiments of this application;

[0023] Figure 9 is a schematic diagram of the structure of the energy storage unit and fixed components disclosed in the embodiments of this application;

[0024] Figure 10 is an exploded structural diagram of the energy storage unit and fixed components disclosed in the embodiments of this application;

[0025] Figure 11 is a schematic diagram of the structure of the control component disclosed in an embodiment of this application;

[0026] Figure 12 is an exploded structural diagram of the control component disclosed in an embodiment of this application;

[0027] Figure 13 is a schematic diagram of the structure of the bottom shell, the first dustproof net, and the second dustproof net disclosed in the embodiment of this application;

[0028] Figure 14 is a schematic diagram of the top cover structure disclosed in an embodiment of this application.

[0029] Key reference numerals: 100 - Portable energy storage device; 10 - Housing assembly; 101 - Bottom shell; 101a - Third side; 101b - Fourth side; 1011 - Second connecting part; 1011a - Stepped surface; 1011b-First threaded hole; 1012-Fourth connecting part; 1013-Protruding rib; 1014-Second connecting post; 1014a-Connecting through hole; 1015-Third vent; 1016-Fourth vent; 102-Top cover; 1021-Power socket; 1022-Handle; 1023-First connecting post; 1023a-Threaded connecting hole; 11-Energy storage unit; 11a-Battery cell; 111-Small side; 112-Large side; 113-Pole post; 12-Fixing assembly; 121-Connector; 122a-First fixing part; 122b-Second fixing part; 1221-First connecting part; 1221a-First positioning part; 1222-Second fixing part; 1222a-Second threaded hole; 1223-Reinforcing rib; 1224-Third connecting part; 1224a-Second... 13-Threaded hole; 13-Control assembly; 131-Box body; 131a-First side; 131b-Second side; 1311-First fixing part; 1311a-Second through hole; 1312-Avoidance notch; 1313-Wire passage hole; 1314-Protrusion; 1314a-Fixing hole; 1315-First vent; 1316-Second vent; 132-Circuit board; 133-Inverter; 134-Power terminal; 135-Fan; 14a-Elastic component; 14b-Locking component; 15a-Communication module; 15b-Magnetic ring; 16-Connecting cable bundle; 161-First sub-cable bundle; 1611-First connector; 162-Second sub-cable bundle; 1621-Second connector; 17-Display assembly; 18a-Fastener; 18b-Connecting plate; 19a-First dustproof mesh; 19b-Second dustproof mesh; f1 - Length direction; f2 - Width direction; f3 - Height direction. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0035] Please refer to Figure 1. This application discloses a portable energy storage device 100, which can be a cuboid structure with a length direction f1, a width direction f2 and a height direction f3.

[0036] Please refer to Figures 2 and 3. The portable energy storage device 100 includes a housing assembly 10, an energy storage unit 11, a fixing assembly 12, and a control assembly 13.

[0037] In this application, the housing assembly 10 includes a bottom shell 101 and a top cover 102 that are separately disposed in the height direction f3. Along the height direction f3, the height of the bottom shell 101 is greater than the height of the top cover 102.

[0038] In this application, the energy storage unit 11 is disposed inside the bottom shell 101, and the energy storage unit 11 has a cuboid structure. The energy storage unit 11 has two small facets 111 opposite each other along the length direction f1, and two large facets 112 along its width direction f2.

[0039] Please refer to Figures 3 to 6. In this application, the fixing component 12 is disposed inside the bottom shell 101, and the fixing component 12 is at least partially disposed on the two large surface sides 112 of the energy storage unit 11 to clamp and fix the energy storage unit 11. The fixing component 12 is provided with a plurality of first positioning parts 1221a. The plurality of first positioning parts 1221a are detachably connected to the bottom shell 101 along the height direction f3. In this way, when the plurality of first positioning parts are connected to the bottom shell 101 along the height direction f3, the energy storage unit 11 can be fixed inside the bottom shell 101.

[0040] In this application, the control component 13 is disposed inside the bottom shell 101. The control component 13 is located on the small facet side 111 of the energy storage unit 11 and is electrically connected to the energy storage unit 11. The control component 13 includes a housing 131. The housing 131 is provided with a plurality of first fixing parts 1311 extending along the length direction f3 close to the energy storage unit 11. The fixing component 12 is provided with a plurality of second fixing parts 1222 protruding from the surface of the large facet side 112 of the energy storage unit 11. The second fixing parts 1222 are detachably connected to the first fixing parts 1311 so that the control component 13 can be locked close to the small facet side 111 of the energy storage unit 11 or separated away from the small facet side 111 of the energy storage unit 11 along the height direction f3, and / or can be locked close to the small facet side 111 of the energy storage unit 11 or separated away from the small facet side 111 of the energy storage unit 11 along the length direction f1.

[0041] In this application, the fixing component 12 is at least partially disposed on the two large-surface sides 112 of the energy storage unit 11 to clamp and fix the energy storage unit 11, so that the energy storage unit 11 can be fixed inside the bottom shell 101 by means of the fixing component 12. At the same time, since the fixing component 12 not only forms a detachable connection with the bottom shell 101 along the height direction f3 through multiple first positioning parts 1221a, but also forms a detachable connection with the first fixing part 1311 on the control component 13 through the second fixing part 1222, the control component 13 can approach the small side of the energy storage unit 11 along the height direction f3. The small facet 111 can be locked or separated from the energy storage unit 11, and / or the small facet 111 can be locked or separated from the energy storage unit 11 along the length direction f1. That is, the control component 13 can be fixed together with the energy storage unit 11 by the fixing component 12, realizing a tight connection between the energy storage unit 11, the control component 13 and the bottom shell 101, avoiding the situation where the energy storage unit 11 shakes inside the bottom shell 101 and the connection terminal becomes loose, thereby causing the electrical connection between the energy storage unit 11 and the control component 13 to fail. The connection terminal can be a power terminal, pole, connection bar, pole bar, etc. mentioned later.

[0042] Furthermore, since the energy storage unit 11 inevitably expands during charging and discharging, and the expansion deformation of the energy storage unit 11 is mainly on the large surface side 112 along its length direction f1, that is, the deformation mainly occurs on the large surface side 112 of the energy storage unit 11, it is easy to squeeze the components located on the large surface side 112. In this application, the control component 13 is set on the small surface side 111 along its length direction f1 of the energy storage unit 11, which can reduce the degree of compression of the control component 13 by the energy storage unit 11 during expansion, so as to avoid damage to the control component 13; and can minimize the compression of the control component 13 by the energy storage unit 11 during expansion, thereby preventing the control component 13 from being displaced. This allows the control component 13 to more effectively constrain the fixing component 12, improve the connection stability between the fixing component 12 and the bottom shell 101, and further facilitate the stable installation of the energy storage unit 11 inside the bottom shell 101 through the fixing component 12, avoiding shaking or displacement of the energy storage unit 11.

[0043] In this application, the energy storage unit 11 may include one or more rectangular battery cells 11a. When the energy storage unit 11 includes multiple rectangular battery cells 11a, as shown in FIG5, such as two, three, four, five, six or more, the multiple battery cells 11a are arranged along the width direction f2, and the multiple battery cells 11a are connected in series or in parallel with each other.

[0044] For example, the technical solution of this application will be further described in detail below, taking the energy storage unit 11 as including two cells 11a connected in series as an example. The two cells 11a are a first cell and a second cell, respectively. The first cell and the second cell are each provided with two terminals 113. One terminal 113 of the first cell is electrically connected to one terminal 113 of the second cell through a terminal bar. The other terminal 113 of the first cell and the other terminal 113 of the second cell are respectively electrically connected to the control component 13.

[0045] In some optional embodiments, as shown in Figures 6 and 7, the fixing component 12 is provided with a first connecting portion 1221 on both upper sides in the width direction. The first connecting portion 1221 is located at the upper end of the fixing component 12 in the height direction f3, and the first connecting portion 1221 bends and extends toward the plane perpendicular to the large surface side 112 of the energy storage unit 11. A first positioning portion 1221a is provided on the first connecting portion 1221. The bottom shell 101 is provided with a second connecting portion 1011 extending toward the height direction on two opposite side walls in the width direction f2. The second connecting portion 1011 is located inside the bottom shell 101, and the upper end of the second connecting portion 1011 along the height direction f3 has a stepped surface 1011a. The first connecting portion 1221 abuts against the stepped surface 1011a. This allows the first connecting part 1221 and the stepped surface 1011a to abut against each other, restricting the position of the fixing component 12 inside the bottom shell 101. This can serve as an indicator for the assembly of the fixing component 12, making it easier to assemble. It can also restrict the fixing component 12 from moving from top to bottom along the height direction f3 to avoid the connection terminals from coming loose, thereby causing the electrical connection between the energy storage unit 11 and the control component 13 to fail.

[0046] As an optional implementation, the first positioning part 1221a may include a first latching part disposed on the first connecting part 1221, and the stepped surface 1011a of the second connecting part 1011 may be provided with a second latching part. The first latching part and the second latching part cooperate to form a detachable connection. By adopting a latching connection to achieve a detachable connection between the fixing component 12 and the bottom shell 101, the connection between the control component 13 and the fixing component 12 can be made more secure; moreover, it is easy to install and easy to disassemble, which is highly practical and convenient to operate.

[0047] As an alternative implementation, the first positioning part 1221a may include a first through hole formed on the first connecting part 1221, and a first threaded hole 1011b formed by the stepped surface 1011a of the second connecting part 1011 recessed inward along the height direction f3. The portable energy storage device 100 also includes a threaded component (not shown), which passes through the first through hole from top to bottom along the height direction f3 and is screwed into the first threaded hole 1011b to form a detachable connection. By using a threaded connection to achieve a detachable connection between the fixing component 12 and the bottom shell 101, the connection between the control component 13 and the fixing component 12 can be made more secure; moreover, it is easy to install and easy to disassemble, making it highly practical and convenient to operate.

[0048] In some optional embodiments, as shown in Figures 6, 7, and 8, the fixing component 12 has a third connecting portion 1224 protruding from its bottom surface in the height direction f3. This third connecting portion 1224 extends along the height direction f3. The bottom shell 101 also has a fourth connecting portion 1012 on its inner bottom surface in the height direction f3 of the energy storage unit 11. The fourth connecting portion 1012 is connected to the third connecting portion 1224. This allows the fixing component 12 to be detachably connected to the bottom shell 101 via the first positioning portion 1221a at its top, and to be connected to the bottom shell 101 via the third connecting portion 1224 and the fourth connecting portion 1012 at its bottom. This ensures that both the top and bottom of the fixing component 12 can be connected to the bottom shell 101, thereby improving the connection stability between the fixing component 12 and the bottom shell 101, and thus allowing the energy storage unit 11 to be more stably fixed inside the bottom shell 101.

[0049] For example, the third connecting part 1224 has a second threaded hole 1224a on the surface facing the inner bottom surface of the base shell 101, and the inner bottom surface of the 101 has a through hole to form a fourth connecting part 1012, so that threaded fasteners such as bolts and screws pass through the through hole and connect with the second threaded hole 1224a, thereby realizing the connection between the fixing component 12 and the base shell 101. The threaded connection method can make the connection between the fixing component 12 and the base shell 101 more secure; moreover, it is easy to install and easy to disassemble, which is highly practical and convenient to operate.

[0050] Please refer to Figures 6 to 9. In this application, the fixing component 12 includes a connector 121, a first fixing member 122a, and a second fixing member 122b. The two large sidewalls 112 of the energy storage unit 11 abut against the inner sidewalls of the first fixing member 122a and the second fixing member 122b, respectively. The connector 121 is clamped to the outer sidewalls of the first fixing member 122a and the second fixing member 122b to fix the energy storage unit 11. That is, the first fixing member 122a covers one of the large sidewalls 112 of the energy storage unit 11, and the second fixing member 122b covers the other large sidewall 112 of the energy storage unit 11. The outer sidewalls of the first fixing member 122a and the second fixing member 122b are sleeved by the connector 121 to fix the energy storage unit 11, so that the energy storage unit 11 can be fixed inside the bottom shell 101 by the fixing component 12.

[0051] In actual assembly, the first fixing member 122a can be wrapped around one large side 112 of the energy storage unit 11, and the second fixing member 122b can be wrapped around the other large side 112 of the energy storage unit 11. Then, the connecting member 121 is clamped to the outer wall of the first fixing member 122a and the second fixing member 122b to fix the energy storage unit 11. Compared with the fixing component 12, which is an integral structure with an inner cavity and an opening, this can avoid the situation where the inner cavity wall rubs against the energy storage unit 11 when the energy storage unit 11 is inserted into the inner cavity from the opening and against the cavity wall, thus avoiding the wear of the energy storage unit 11.

[0052] The first fixing member 122a and the second fixing member 122b are both provided with the aforementioned plurality of first positioning portions 1221a, so that the first fixing member 122a and the second fixing member 122b can be detachably connected to the bottom shell 101, and the first fixing member 122a and the second fixing member 122b are also provided with the aforementioned plurality of second fixing portions 1222, so that the first fixing member 122a and the second fixing member 122b can be detachably connected to the control component 13.

[0053] In this application, the first fixing member 122a and the second fixing member 122b can be fixed not only by the connecting member 121, but also by the second fixing part 1222 and the first fixing part 1311 to the control component 13. This means that the first fixing member 122a and the second fixing member 122b are constrained not only by the connecting member 121, but also by the control component 13. This effectively prevents relative movement between the first fixing member 122a and the second fixing member 122b, thereby reducing the force applied to the connection between the fixing component 12 and the bottom shell 101 and affecting the connection stability. As a result, the energy storage unit 11 can be stably installed inside the bottom shell 101 by the fixing component 12. This effectively prevents the energy storage unit 11 from shaking or displacing, thus avoiding damage to the energy storage unit 11 caused by shaking or displacing, improving the service life of the energy storage unit 11, and reducing the problem of poor contact between the energy storage unit 11 and the control component 13 caused by shaking or displacing.

[0054] Optionally, both the first fixing member 122a and the second fixing member 122b in this application can be metal parts, that is, the material of the first fixing member 122a and the second fixing member 122b can be metal, such as stainless steel, iron, aluminum, aluminum alloy, copper, copper alloy, etc. Compared with the material of the first fixing member 122a and the second fixing member 122b being plastic, the first fixing member 122a and the second fixing member 122b can have relatively strong structural strength, improve the structural strength of the first fixing member 122a and the second fixing member 122b, thereby enabling the energy storage unit 11 to be more reliably fixed inside the bottom shell 101.

[0055] Optionally, the connector 121 in this application can be a flexible component, such as a cable tie or strap. Multiple battery cells 11a are located between the first fixing member 122a and the second fixing member 122b, and the connector 121 is sleeved around the first fixing member 122a, the second fixing member 122b, and the multiple battery cells 11a. By using a flexible component sleeved around the first fixing member 122a, the second fixing member 122b, and the multiple battery cells 11a, the first fixing member 122a, the second fixing member 122b, and the multiple battery cells 11a can be fixed together. This fixing method is relatively simple and easy to operate.

[0056] In some optional embodiments, the first fixing member 122a and the second fixing member 122b are both provided with a plurality of spaced reinforcing ribs 1223 on the surface facing away from the energy storage unit 11 in the width direction f2, thereby improving the structural strength of the first fixing member 122a and the second fixing member 122b, so that the energy storage unit 11 can be more securely fixed inside the bottom shell 101.

[0057] In some optional embodiments, as shown in Figures 9 and 10, an elastic member 14a is provided between the inner wall of the fixing component 12 and the large surface side 112 of the energy storage unit 11. Specifically, an elastic member 14a is provided between the first fixing member 122a and one of the large surface sides 112 of the energy storage unit 11, and / or, an elastic member 14a is provided between the second fixing member 122b and the other large surface side 112 of the energy storage unit 11. The elastic member 14a may be, but is not limited to, a silicone component, a rubber component, a plastic component, or a foam component, or any other component with elastic deformation capability. The elastic component 14a provides expansion space for the energy storage unit 11. When the energy storage unit 11 expands, it deforms by pressing the elastic component 14a, allowing the energy storage unit 11 to expand adaptively, absorbing the expansion force of the energy storage unit 11 and dissipating the energy of the expansion force. This prevents the energy storage unit 11 from squeezing the fixing plate during expansion, thereby reducing the force applied to the connection between the fixing component 12 and the bottom shell 101 and affecting the connection stability. As a result, the energy storage unit 11 can be stably installed inside the bottom shell 101 through the fixing component 12. This effectively prevents the energy storage unit 11 from shaking or displacing during the movement of the portable energy storage device 100, thus avoiding damage to the energy storage unit 11 caused by shaking or displacement, increasing the service life of the energy storage unit 11, and reducing the problem of poor contact between the energy storage unit 11 and the control component 13 due to shaking or displacement.

[0058] In the actual assembly process, the two battery cells 11a can be pressed together first, then elastic components 14a can be attached to both sides of the two battery cells 11a, and then the first fixing component 122a and the second fixing component 122b can be attached together. Finally, the set force is squeezed through the extruder and fixed by the connector 121.

[0059] As an optional implementation, the first fixing part 1311 can be a third snap-fit ​​part, and the second fixing part 1222 can be a fourth snap-fit ​​part, with the third snap-fit ​​part and the fourth snap-fit ​​part cooperating to form a detachable connection. By adopting a snap-fit ​​connection to achieve a detachable connection between the fixing component 12 and the bottom shell 101, the connection between the control component 13 and the fixing component 12 can be made more secure; moreover, it is easy to install and easy to disassemble, making it highly practical and convenient to operate.

[0060] As an alternative implementation, as shown in Figures 5 and 6, the first fixing part 1311 is a sheet-like fixing plate. The first fixing part 1311 has a second through hole 1311a extending along the width direction f2. The second fixing part 1222 is a threaded seat protruding from the surface of the fixing component 12 opposite to the large surface side 112 of the energy storage unit 11. This threaded seat has a second threaded hole 1222a recessed inward from the surface of the fixing component 12. The portable energy storage device also includes a locking member 14b, which extends along the width direction f2 from front to back or from back to front through the second through hole 1311a and is screwed into the second threaded hole 1222a to form a detachable connection. By using a threaded connection to achieve a detachable connection between the fixing component 12 and the bottom shell 101, the connection between the control component 13 and the fixing component 12 is relatively secure; moreover, installation is convenient, disassembly is easy, practicality is strong, and operation is convenient. The locking member 14b can be a bolt or screw, etc.

[0061] In some optional embodiments, as shown in Figures 5 to 7, the bottom shell 101 has two opposing sidewalls on the width direction f2 with protruding ribs 1013 extending along the height direction f3. The protruding ribs 1013 are located inside the bottom shell 101, and the projection of the protruding ribs 1013 on the sidewall of the bottom shell 101 along the width direction f2 is a first projection. The projection of the locking member 14b on the sidewall of the bottom shell along the width direction f2 is a second projection. The second projection and the first projection at least partially overlap. The locking member 14b and the protruding ribs 1013 are abutted or spaced apart in the width direction.

[0062] Through the above design, during actual assembly, only when the locking member 14b is properly locked, that is, when the locking member 14b is screwed into the second threaded hole 1222a to a sufficient depth, the locking member 14b and the raised rib 1013 are abutted or spaced apart in the width direction f2. The locking member 14b will not be interfered with by the raised rib, and the entire assembly of the fixing component 12 and the energy storage unit 11 can be smoothly installed into the predetermined position inside the bottom shell 101. However, if the locking member 14b is not properly locked, that is, when the locking member 14b is screwed into the second threaded hole 1222a to a insufficient depth, the locking member 14b will interfere with the raised rib 1013, causing the entire assembly of the fixing component 12 and the energy storage unit 11 to be stuck when installed into the bottom shell 101 and unable to be installed in place. This serves as a foolproof reminder to the operator that the locking member 14b has not been locked in place, thus ensuring the tight connection between the energy storage unit 11 and the control component 13. At the same time, the raised ribs 1013 can also be used to enhance the structural strength of the bottom shell 101.

[0063] In the embodiment of the first aspect of this application, as shown in FIG11, the box body 131 has a cuboid structure, and the first fixing part 1311 is formed by extending from the side wall of the box body 131 near the energy storage unit 11 toward the energy storage unit 11, or by extending from two opposite side walls of the box body 131 along the width direction f2 toward the energy storage unit 11. Such a first fixing part 1311 has a relatively simple structure and is easy to form.

[0064] In this application, as shown in Figures 10 to 12, the control component 13 includes not only the housing 131, but also a circuit board 132 disposed inside the housing 131. The circuit board 132 is electrically connected to the energy storage unit 11. Thus, when the bottom shell 101 is subjected to external pressure, the housing 131 can be used to protect the circuit board 132 and the electronic components on the circuit board 132 from being squeezed, thereby helping to ensure the performance and service life of the circuit board 132.

[0065] The box body 131 can be a metal box structure, meaning that the material of the box body 131 is metal, such as stainless steel, iron, aluminum, aluminum alloy, copper, copper alloy, etc. The use of metal for the box body 131 in this application, compared to a plastic box body 131, allows the box body 131 to have relatively greater hardness, increasing its resistance to deformation and providing better protection for the circuit board 132.

[0066] For example, the electronic components on circuit board 132 may include a bidirectional buck-boost converter, an inverter 133, etc. Thus, when the energy storage unit 11 discharges, the low-voltage DC output (e.g., 3.2V DC) is first boosted to 310V DC by the bidirectional buck-boost converter on circuit board 132, and then inverted to 220V AC by the inverter 133 on circuit board 132 to meet the charging requirements of the device to be charged, thereby discharging the energy storage unit 11. When the energy storage unit 11 is charging, the externally input 220V AC is first inverted to 310V DC by the inverter 133 on circuit board 132, and then stepped down to 3.2V DC by the bidirectional buck-boost converter on circuit board 132 to meet the charging requirements of the energy storage unit 11, thereby charging the energy storage unit 11. It is understood that in practical use, circuit board 132 can integrate different functional electronic components according to the application scenario of the portable energy storage device to meet application requirements.

[0067] Furthermore, in addition to the bidirectional buck-boost converter and inverter 133, the circuit board 132 in this application can also integrate a battery management system (BMS) so that the circuit board 132 can serve as a key component for monitoring, controlling and protecting the energy storage unit 11. For example, it can monitor and manage parameters such as voltage, temperature, charging status and discharging status of the energy storage unit 11, thereby avoiding dangerous situations such as overcharging, over-discharging, overcurrent and short circuit, ensuring the safe operation of the energy storage unit 11 and extending the working life of the battery cell 11a.

[0068] To facilitate the electrical connection between the circuit board 132 and the energy storage unit 11, the circuit board 132 is provided with a power connection terminal 134, which is located on the same side of the bottom shell 101 as the terminal 113 of the battery cell 11a. The portable energy storage device also includes a connecting strip 18b, which is electrically connected to the terminal 113 of the battery cell 11a, and the connecting strip 18b extends along the length direction f1 to be electrically connected to the power connection terminal 134. Since the control component 13 in this application is located on the small side 111 of the energy storage unit 11, rather than on the top of the energy storage unit 11, the power terminal 134 of the control component 13 can be located on the same side as the pole 113 of the energy storage unit 11. It is not necessary to drill holes in the circuit board 132 for the connecting bar 18b to pass through, nor is it necessary to bend the connecting bar 18b from one side of the circuit board 132 to the other side of the circuit board 132. The connecting bar 18b can be connected between the power terminal 134 and the pole 113. This improves the rationality of the wiring of the portable energy storage device 100, makes the wiring layout simpler and more reasonable, and enables the connection of electrical wiring to be completed quickly. The wiring is simple, the layout is neat, the reliability is high, the safety is also high, and it is easy to trace and find faults in case of failure, reducing the failures caused by complex wiring.

[0069] Optionally, the connecting plate 18b can be electrically connected to the power terminal 134 via bolts, screws, etc. This design can reduce the number of connecting wires or connectors between the energy storage unit 11 and the inverter 133. Moreover, the connecting plate 18b is a thin sheet structure that can deform. This deformation of the connecting plate 18b can absorb the large expansion force of the energy storage unit 11 in the later stages of its cycle life, thereby protecting the circuit board 132 from deformation and avoiding damage to the circuit board 132.

[0070] In this application, the power terminal 134 is located inside the housing 131. The end face of the housing 131 in the height direction f3 is provided with a clearance notch 1312 to expose the power terminal 134, so as to avoid the power terminal 134 being blocked by the housing 131, thereby facilitating the connection of the connecting plate 18b to the power terminal 134.

[0071] Furthermore, as shown in Figures 3, 4, 11, and 12, the power terminal 134 is located at the top of the outer bottom shell 101. The surface of the housing 131 facing away from the energy storage unit 11 is provided with a through-hole 1313. The through-hole 1313 is located at the bottom of the bottom shell 101 in the height direction f3. The connecting wire 16 is electrically connected to the circuit board 132, and the connecting wire 16 passes through the through-hole 1313 and extends to the top cover 102 to be electrically connected to the power socket 1021. That is, one end of the connecting wire 16 is electrically connected to the circuit board 132, and the other end is electrically connected to the power socket 1021. Through the above design, the electrical connection points of the power terminal 134 and the connecting wire 16 to the circuit board 132 can be respectively set at both ends of the circuit board 132 in the height direction f3, avoiding concentration at one point on the circuit board 132. This can prevent the connecting wire 16 and the connecting bar 18b from getting tangled together, thereby improving the wiring rationality of the portable energy storage device 100 and reducing the failures caused by complex wiring.

[0072] In some optional embodiments, the surface of the housing 131 facing away from the energy storage unit 11 has a protrusion 1314. The protrusion 1314 has a fixing hole 1314a for cable ties to pass through, so that the connecting wire 16 can be fixed to the protrusion 1314 by the cable tie, thereby facilitating the fixing of the connecting wire 16. By binding and guiding the connecting wire 16 through the cooperation of the protrusion 1314 and the cable tie, the layout of the connecting wire 16 can be made simpler, thereby avoiding the problems of messy, cross-distributed, and tangled connecting wires 16. In this way, it is easy to trace and find in case of failure, and it is convenient for maintenance personnel to identify the connecting wire 16, so as to facilitate maintenance and repair.

[0073] In addition, as mentioned above, the material of the box 131 in this application is metal. If a wiring groove is directly opened on the box 131 to hold the connecting wire 16 in the wiring groove, the connecting wire 16 can be restrained and guided. Since opening a wiring channel is equivalent to removing a portion of the material from the housing 131, it can easily affect the structural strength of the housing 131. Furthermore, since the housing 131 is made of metal, directly embedding the connecting wire 16 in the wiring channel could easily cause it to be cut by the housing 131. Therefore, this application provides a protrusion 1314 on the housing 131, and a fixing hole 1314a is opened on the protrusion 1314 to cooperate with cable ties to fix the connecting wire 16. This reduces the contact between the connecting wire 16 and the housing 131, decreasing the likelihood of the connecting wire 16 being cut by the housing 131, and also avoids affecting the structural strength of the housing 131, allowing the housing 131 to provide more effective protection for components such as the circuit board 132 and the inverter 133.

[0074] Optionally, there may be multiple protrusions 1314. Multiple protrusions 1314 for fixing the same connecting wire 16 are arranged along the height direction f3 on the box body 131. This allows the same connecting wire 16 to be fixed by multiple protrusions 1314, thereby stably fixing the connecting wire 16 to the box body 131 and preventing the connecting wire 16 from becoming tangled or twisted together.

[0075] In some optional embodiments, as shown in Figures 11 to 13, the housing 131 of the control component 13 has a first side 131a1 and a second side 131a2 opposite each other in the width direction f2. The first side 131a1 has a first vent 1315 extending along the width direction f2, and the second side 131b has a second vent 1316 extending along the width direction f2. The first vent 1315 and the second vent 1316 are connected, and a fan 135 is installed at the first vent 1315. The bottom shell 101 has a third side 101a and a fourth side 101b in the width direction f2. The third side 101a has a third vent 1015 extending along the width direction f2. The third vent 101a and the second vent 1316 are connected, and a fan 135 is installed at the first vent 1315. A ventilation opening 1315 is connected to the first ventilation opening, and a fourth ventilation opening 1016 is provided on the fourth side 101b, which extends along the width direction f2. The fourth ventilation opening 1016 is connected to the second ventilation opening 1316. This allows the fan 135 located at the first ventilation opening 1315 to form heat convection through the second ventilation opening 1316, the third ventilation opening 1015 and the fourth ventilation opening 1016, causing the air around the circuit board 132 and the inverter 133 to flow, thereby removing the heat from the circuit board 132 and the inverter 133. This achieves heat dissipation and cooling of the circuit board 132 and the inverter 133, preventing overheating and overload, and thus helping to ensure the normal operation of the control component 13 and improving the safety of the portable energy storage device.

[0076] In this application, when the fan 135 is turned on to dissipate heat from the circuit board 132 and the inverter 133, for example, the air outside the bottom shell 101 enters the interior of the bottom shell 101 through the third vent 1015 under the action of the fan 135, and enters the housing 131 under the action of the fan 135, blowing towards the circuit board 132 and the inverter 133, taking away the heat from the circuit board 132 and the inverter 133, then exits from the main housing 131 through the second vent 1316, and finally exits from the bottom shell 101 through the fourth vent 1016, thereby achieving the effect of dissipating heat from the circuit board 132 and the inverter 133. In another exemplary case, the gas outside the bottom shell 101 enters the interior of the bottom shell 101 through the fourth vent 1016 under the action of the fan 135, and enters the housing 131 through the second vent 1316 and flows through the circuit board 132 and inverter 133, carrying away the heat of the circuit board 132 and inverter 133. Then, under the action of the fan 135, it is discharged outside the housing 131, and finally discharged outside the bottom shell 101 through the third vent 1015, thereby achieving the effect of heat dissipation for the circuit board 132 and inverter 133.

[0077] Furthermore, the projection of the first vent 1315 on the bottom shell 101 at least partially overlaps with the third vent 1015, and the projection of the second vent 1316 on the bottom shell 101 at least partially overlaps with the fourth vent 1016. This can accelerate the flow rate of the gas, thereby improving the heat dissipation effect of the fan 135 on the circuit board 132 and the inverter 133.

[0078] In some optional embodiments, as shown in FIG13, the portable energy storage device further includes a first dustproof net 19a and a second dustproof net 19b. Both the first dustproof net 19a and the second dustproof net 19b are disposed inside the bottom shell 101. The first dustproof net 19a covers the third vent 1015, and the second dustproof net 19b covers the fourth vent 1016. Thus, the first dustproof net 19a and the second dustproof net 19b can be used to prevent large and medium-sized particles from entering the interior of the bottom shell 101, so as to avoid affecting the operation of the energy storage unit 11 and the control component 13 inside the bottom shell 101.

[0079] In some optional embodiments, as shown in Figures 3, 4, and 14, the portable energy storage device further includes a communication module 15a. The communication module 15a is detachably disposed inside the top cover 102 and is electrically connected to the control component 13, and is used to establish a communication connection with a smart terminal. The smart terminal may be, but is not limited to, a mobile phone, tablet, laptop, or desktop computer.

[0080] In this application, a communication module 15a electrically connected to the control component 13 is added inside the top cover 102. This communication module 15a can establish a communication connection with smart terminals such as mobile phones, tablets, laptops, and desktop computers, thereby transmitting data such as parameters of the energy storage unit 11 to the smart terminal. This allows users to remotely view the data of the energy storage unit 11 and remotely monitor the energy storage unit 11 through the smart terminal, avoiding the cumbersome process caused by the need for manual on-site visits to obtain the data of the energy storage unit 11. At the same time, the portable energy storage device 100 can also be controlled through the smart terminal, such as starting and stopping it, realizing human-machine separation and greatly facilitating the control of the portable energy storage device 100.

[0081] Furthermore, since the energy storage unit 11 inevitably expands during charging and discharging, and the expansion deformation of the energy storage unit 11 is mainly on the large surface side 112 along its length direction f1, that is, the deformation mainly occurs on the large surface side 112 of the energy storage unit 11, it is easy to squeeze the components located on the large surface side 112. This application separates the communication module 15a from the control component 13 by placing the communication module 15a inside the top cover 102, so that the communication module 15a can be far away from the control component 13. On the one hand, the communication module 15a can be selected according to the actual needs of the user, and the interference of the control component 13 on the signal of the communication module 15a can be reduced, thereby improving the communication performance of the communication module 15a. In addition, this application uses a metal box 131 to shield the signals of the electronic components on the circuit board 132, thereby avoiding interference with the communication performance of the communication module 15a. On the other hand, it can also reduce the degree of compression of the communication module 15a by the energy storage unit 11 during expansion, thereby avoiding damage to the communication module 15a.

[0082] The phrase "selecting and equipping communication module 15a according to the user's actual needs" can be understood as follows: during assembly, different types of communication modules 15a can be configured and assembled into the portable energy storage device 100 according to the user's actual needs. It can even be determined whether or not to equip the portable energy storage device 100 with the communication module 15a according to the user's usage requirements. That is, if the user requires the communication module 15a, it can be installed on the top cover 102; if the user does not require the communication module 15a, it can be left unequipped on the outer shell assembly 10.

[0083] In this application, the communication module 15a may be one or any combination of an antenna (e.g., a 4G antenna, a 5G antenna, etc.), a Bluetooth module, and a Wi-Fi module.

[0084] When the communication module 15a is an antenna, the control component 13 of the portable energy storage device 100 can establish a wireless connection with the motherboard of the smart terminal through the communication module 15a to transmit parameters such as voltage, temperature, charging status and discharging status of the energy storage unit 11 to the motherboard of the smart terminal, and display them on the screen of the smart terminal for easy monitoring of the portable energy storage device 100.

[0085] For example, when the communication module 15a is a Bluetooth module, Bluetooth technology can also be used to establish a wireless connection between the control component 13 of the portable energy storage device 100 and the motherboard of the smart terminal, so as to transmit parameters such as voltage, temperature, charging status and discharging status of the energy storage unit 11 to the motherboard of the smart terminal, and display them on the display screen of the smart terminal for easy monitoring of the portable energy storage device 100.

[0086] For example, when the communication module 15a is a Wi-Fi module, Wi-Fi technology can also be used to establish a wireless connection between the control component 13 of the portable energy storage device 100 and the motherboard of the smart terminal, so as to transmit parameters such as voltage, temperature, charging status and discharging status of the energy storage unit 11 to the motherboard of the smart terminal, and display them on the display screen of the smart terminal for easy monitoring of the portable energy storage device 100.

[0087] In some optional embodiments, as shown in Figures 3, 4 and 14, the top cover 102 has a power socket 1021 on the side wall along the length direction f1 of the energy storage unit 11. The portable energy storage device also includes a magnetic ring 15b and a connecting wire 16 located inside the top cover 102. The magnetic ring 15b is located inside the top cover 102 and close to the communication module 15a. The connecting wire 16 passes through the magnetic ring 15b, that is, the connecting wire 16 passes through the center of the magnetic ring 15b, and one end of the connecting wire 16 is located outside the magnetic ring 15b to be electrically connected to the power socket 1021. The other end of the connecting wire 16 is located outside the magnetic ring 15b to be electrically connected to the control component 13. Since the magnetic ring 15b can form a magnetic field, it can absorb and suppress electromagnetic interference (EMI) and radio frequency interference (RFI) on the connecting wire 16. Therefore, the setting of the magnetic ring 15b can effectively suppress electromagnetic interference. On the one hand, this can prevent the interference from affecting the normal operation of the communication module 15a, thereby making the performance of the communication module 15a more stable and reliable. On the other hand, it can also prevent the electromagnetic interference generated by the portable energy storage device 100 from affecting or damaging the normal operation of other electronic devices, allowing the portable energy storage device 100 to operate in accordance with requirements in its electromagnetic ring 15b environment without causing unacceptable electromagnetic interference to any equipment in its environment, thus improving the electromagnetic compatibility (EMC) of the portable energy storage device 100.

[0088] The magnetic ring 15b can be an electromagnetic component, typically made of ferromagnetic or soft magnetic materials.

[0089] In this application, the socket of the power socket 1021 is used for inserting an external power plug so that the power plug can be electrically connected to the energy storage unit 11 through the power socket 1021 and the control component 13. In this way, an external power source can be connected through the power plug to charge the energy storage unit 11, or a device to be charged can be connected through the power plug to charge the device to be charged.

[0090] Optionally, there may be multiple power sockets 1021, such as two, three, four, five, six, or more. A portion of the power sockets 1021 can be used to charge the portable energy storage device 100, while another portion can be used to discharge the portable energy storage device 100. For example, the power socket 1021 may include four sub-power sockets 1021, where two sub-power sockets 1021 can be used to charge the portable energy storage device 100; the remaining two sub-power sockets 1021 are used to charge the portable energy storage device 100. One of the remaining two sub-power sockets 1021 is an AC power charging plug, and the other is a photovoltaic charging plug, thus facilitating the charging and discharging of the portable energy storage device 100.

[0091] In some optional embodiments, the portable energy storage device 100 also includes a display component 17 located inside the top cover 102. The display component 17 is electrically connected to the control component 13, and the display surface of the display component 17 is exposed on the top surface of the top cover 102 in the height direction f3, so as to avoid the display surface of the display component 17 being blocked by the top cover 102, so that the user can view the content displayed on the display surface, such as displaying parameters such as power, time, voltage, temperature, charging status and discharging status. This allows the user to intuitively monitor and manage parameters such as voltage, temperature, charging status and discharging status of the energy storage unit 11, so that the user can understand the specific situation of the portable energy storage device 100 in a timely manner, thereby improving the ease of use of the portable energy storage device 100.

[0092] In this application, the energy storage unit 11, the fixing component 12, and the control component 13 are all disposed inside the bottom shell 101, and the communication module 15a, the display component 17, and the power socket 1021 are all disposed on the top cover 102; the connecting wire 16 includes a first sub-wire 161 and a second sub-wire 162. The first sub-wire 161 is located inside the top cover 102, and one end of the first sub-wire 161 is electrically connected to the power socket 1021, and the other end of the first sub-wire 161 is connected to a first connector 1611. The second sub-wire 162 is located inside the bottom shell 101, and one end of the second sub-wire 162 is electrically connected to the circuit board 132, and the other end of the second sub-wire 162 is connected to a second connector 1621. The second connector 1621 is detachably connected to the first connector 1611.

[0093] The energy storage unit 11, the fixing component 12, and the control component 13 are housed inside the bottom shell 101, while the communication module 15a, the display component 17, and the power socket 1021 are housed on the top cover 102. This avoids concentrating all components in the bottom shell 101, instead placing some components in the bottom shell 101 and others in the top cover 102, thus making full and rational use of the internal space of each shell and improving the space utilization of the outer shell assembly 10. At the same time, since the power socket 1021 and the control component 13 are housed in different shells and need to maintain an electrical connection, the connecting wire 16 is divided into a detachable first sub-wire 161 and a second sub-wire 162, which provides the possibility of placing the power socket 1021 and the control component 13 in different shells.

[0094] During assembly, the energy storage unit 11 and the control component 13 are generally assembled together first. Then, the assembled energy storage unit 11 and the control component 13 are installed and fixed inside the bottom shell 101. At this time, the second connector 1621 is located on top of the control component 13 to prevent the bottom shell 101 from blocking the second connector 1621, so that the second connector 1621 can be connected to the first connector 1611 later. Then, the communication module 15a, the display component 17 and the power socket 1021 and other components are installed and fixed on the top cover 102. Next, the assembled top cover 102 is placed on top of the bottom shell 101, and the first connector 1611 of the first sub-beam 161 is connected to the second connector 1621 of the second sub-beam 162. Finally, the top cover 102 and the bottom shell 101 are fixed together, thereby completing the assembly of the portable energy storage device 100. During maintenance, the top cover 102 and bottom shell 101 are first disassembled, and then the first connector 1611 and the second connector 1621 are disassembled. This exposes components such as the energy storage unit 11, control component 13, communication module 15a, display component 17, and power socket 1021, making it easier to disassemble and inspect a specific module without having to disassemble each component individually, thus facilitating replacement and repair.

[0095] As described above, there are multiple power sockets 1021 in this application. Each power socket 1021 is connected to a first sub-branch wire 161, and the first connector 1611 of each first sub-branch wire 161 is detachably connected to the second connector 1621 of a second sub-branch wire 162. Since the models of each first connector 1611 are different, the models of each second connector 1621 are also different. That is, the ports of each first connector 1611 are different, and the ports of each second connector 1621 are also different. This has a certain foolproof effect, so that each first connector 1611 can only be connected to the second connector 1621 that is compatible with its port, avoiding incorrect wiring and ensuring that the portable energy storage device 100 can be used normally.

[0096] In some alternative embodiments, the top cover 102 is provided with a handle 1022 located outside the top cover 102, so that when moving the portable energy storage device 100, the handle 1022 can be grasped to lift the portable energy storage device 100 and move the portable energy storage device 100 to the target location, thus making the movement of the portable energy storage device 100 more convenient.

[0097] Optionally, the top cover 102 is provided with handles 1022 on both sides in the height direction f3 of the energy storage unit 11. The double handles 1022 allow the energy storage device to be moved by holding the handles 1022 with both hands, or by two people working together to move the energy storage device, thereby distributing the force and making it easier to move and transport the energy storage device.

[0098] In some optional embodiments, as shown in Figures 3, 4, 13, and 14, the top cover 102 has a first connecting post 1023 extending along the height direction f3 inside. The surface of the first connecting post 1023 facing the bottom shell 101 has a threaded connection hole 1023a. The bottom shell 101 has a second connecting post 1014 extending along the height direction f3 inside. The second connecting post 1014 has a connecting through hole 1014a, which passes through the second connecting post 1014 and the bottom shell 101 along the height direction f3. The portable energy storage device 100 also includes a fastener 18a, which can be a bolt or screw, etc. The fastener 18a passes through the connecting through hole 1014a and connects to the threaded connection hole 1023a to achieve the connection between the bottom shell 101 and the top cover 102. The threaded connection method makes the connection between the top cover 102 and the bottom shell 101 relatively firm; it is also convenient to install and disassemble, making it highly practical and easy to operate. Meanwhile, since the nut of fastener 18a is located on the bottom side of the bottom shell 101, and there are no holes on the top surface of the top cover 102, and since when the portable energy storage device 100 is placed on a flat surface such as a desktop, tabletop, or ground, the bottom surface of the bottom shell 101 is generally in contact with the flat surface, while the top surface of the top cover 102 is exposed to the environment, the above-mentioned fixing method between the top cover 102 and the bottom shell 101 can also prevent rainwater and other liquids from entering the interior of the outer shell assembly 10 through the holes on the top surface of the top cover 102, thereby improving the waterproof performance of the outer shell assembly 10.

[0099] Furthermore, by forming a first connecting post 1023 inside the top cover 102 to form a threaded connection hole 1023a, and forming a second connecting post 1014 inside the bottom shell 101 to form a connection through hole 1014a, compared to forming a threaded connection hole 1023a directly on the side wall of the top cover 102 and a connection through hole 1014a directly on the side wall of the bottom shell 101, the radial dimensions of the first connecting post 1023 and the second connecting post 1014 can be locally increased to form threaded connection holes 1023a and connection through holes 1014a with larger radial dimensions. This ensures the connection stability between the top cover 102 and the bottom shell 101 without increasing the overall wall thickness of the top cover 102 and the bottom shell 101, thus reducing the overall weight of the portable energy storage device 100 and making it easier to lift the portable energy storage device 100, thereby facilitating the movement and transportation of the portable energy storage device 100.

[0100] Optionally, the top cover 102 has a plurality of first connecting posts 1023 arranged circumferentially around the top cover 102. Correspondingly, the bottom shell 101 has a plurality of second connecting posts 1014 arranged circumferentially around the bottom shell 101. There are a plurality of fasteners 18a. Each fastener 18a passes through a connecting through hole 1014a of a second connecting post 1014 and connects to a threaded connecting hole 1023a of a first connecting post 1023 to realize the connection between the top cover 102 and the bottom shell 101. This can improve the connection stability between the top cover 102 and the bottom shell 101 and improve the load-bearing and fixing effect of the outer shell assembly 10.

[0101] For example, both the top cover 102 and the bottom shell 101 are rectangular shells. The top cover 102 has six first connecting posts 1023 at its four corners and center, and six second connecting posts 1014 at its four corners and center. There are also six fasteners 18a. This design allows for a more uniform tensile force between the top cover 102 and the bottom shell 101, thereby improving the connection stability between them and enhancing the load-bearing and fixing effect of the outer shell assembly 10.

[0102] This application also discloses an energy storage system having a portable energy storage device as described in any of the foregoing embodiments. Specifically, the energy storage system may include an electrical device and a portable energy storage device as described in any of the foregoing embodiments, the portable energy storage device being used to supply power to the electrical device. It is understood that an energy storage system having the portable energy storage device described above can bring the same or similar beneficial effects as the portable energy storage device, as detailed in the description of the embodiments of the portable energy storage device, which will not be repeated here.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] Furthermore, the embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the content of this specification should not be construed as a limitation of this application, and the protection scope of this application should be determined by the appended claims.

Claims

1. A portable energy storage device, characterized in that, The portable energy storage device has a length direction, a width direction, and a height direction. The portable energy storage device includes: The housing assembly includes a bottom shell and a top cover that are separately disposed in the height direction, wherein the height of the bottom shell is greater than the height of the top cover in the height direction; An energy storage unit is disposed inside the bottom shell and has a cuboid structure. The energy storage unit has two small facets opposite each other along the length direction and two large facets opposite each other along the width direction. A fixing component is disposed inside the bottom shell. The fixing component is at least partially located on two large-faced sides of the energy storage unit and clamps and fixes the energy storage unit. The fixing component has multiple first positioning parts, which are detachably connected to the bottom shell along the height direction. A control component is disposed inside the bottom shell, located on the small side of the energy storage unit, and electrically connected to the energy storage unit. The control component includes a housing, which has a plurality of first fixing parts extending along the length direction close to the energy storage unit. The fixing component has a plurality of second fixing parts protruding from the large side of the energy storage unit. The second fixing parts are detachably connected to the first fixing parts so that the control component can be locked close to the small side of the energy storage unit or separated from the small side of the energy storage unit along the height direction, and / or can be locked close to the small side of the energy storage unit or separated from the small side of the energy storage unit along the length direction.

2. The portable energy storage device according to claim 1, characterized in that, The fixing component is provided with a first connecting part on both sides in the width direction. The first connecting part is located at the upper end of the fixing component in the height direction and bends and extends toward the plane perpendicular to the large surface side of the energy storage unit. The first positioning part is provided on the first connecting part. The bottom shell has two opposite sidewalls in the width direction each having a second connecting portion extending toward the height direction. The second connecting portion is located inside the bottom shell, and the upper end of the second connecting portion along the height direction has a stepped surface, and the first connecting portion abuts against the stepped surface.

3. The portable energy storage device according to claim 2, characterized in that, The first positioning part includes a first latching part disposed on the first connecting part, and the stepped surface of the second connecting part is provided with a second latching part, wherein the first latching part and the second latching part cooperate to form a detachable connection; and / or, The first positioning part includes a first through hole formed on the first connecting part, and the stepped surface of the second connecting part is recessed inward along the height direction to form a first threaded hole. The portable energy storage device also includes a threaded component, which passes through the first through hole from top to bottom along the height direction and is screwed into the first threaded hole to form a detachable connection.

4. The portable energy storage device according to claim 1, characterized in that, The fixing assembly includes a connector, a first fixing member, and a second fixing member. The two large sides of the energy storage unit abut against the inner sidewalls of the first fixing member and the second fixing member, respectively. The first fixing member and the second fixing member are provided with the plurality of first positioning parts and the plurality of second fixing parts. The connector is clamped to the outer sidewalls of the first fixing member and the second fixing member to fix the energy storage unit.

5. The portable energy storage device according to claim 1, characterized in that, The first fixing part is a third buckle part, and the second fixing part is a fourth buckle part. The third buckle part and the fourth buckle part cooperate to form a detachable connection.

6. The portable energy storage device according to claim 1, characterized in that, The first fixing part is a sheet-like fixing plate. The first fixing part has a second through hole that extends along the width direction. The second fixing part is a threaded seat that protrudes from the surface of the fixing component away from the large surface of the energy storage unit. The threaded seat has a second threaded hole that is recessed inward from the surface of the fixing component. The portable energy storage device also includes a locking member. The locking member extends through the second through hole from front to back or from back to front along the width direction and is screwed into the second threaded hole to form a detachable connection.

7. The portable energy storage device according to claim 6, characterized in that, The box body has a cuboid structure. The first fixing part is formed by extending the side wall of the box body near the energy storage unit toward the energy storage unit, or by extending the two opposite side walls of the box body toward the energy storage unit along the width direction.

8. The portable energy storage device according to claim 6, characterized in that, The bottom shell has protruding ribs extending along the height direction on two opposite sidewalls in the width direction. The protruding ribs are located inside the bottom shell, and the projection of the protruding ribs on the sidewalls of the bottom shell along the width direction is a first projection. The projection of the locking member on the sidewalls of the bottom shell along the width direction is a second projection. The second projection and the first projection at least partially overlap. The locking member and the protruding ribs are abutted or spaced apart in the width direction.

9. The portable energy storage device according to any one of claims 1-8, characterized in that, An elastic component is provided between the inner wall of the fixing component and the large surface side of the energy storage unit.

10. An energy storage system, characterized in that, The energy storage system has a portable energy storage device as described in any one of claims 1-9.

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