Energy storage device and energy storage system

Abstract

The invention discloses an energy storage device and an energy storage system.The energy storage device comprises a shell, a clamping piece, a battery, a mainboard installation piece and a circuit mainboard, the clamping piece is arranged in the shell and is provided with a clamping space, the battery is arranged in the clamping space, the mainboard installation piece is arranged in the shell and is connected with the clamping piece, and the circuit mainboard is arranged in the shell. The main board installation part is arranged in the shell and located on one side of the battery, the circuit main board is arranged in the shell and installed on the main board installation part, a gap is formed between the circuit main board and the clamping part, and the circuit main board is electrically connected with the battery.

Description

[0001] Related cross-references

[0002] This application claims priority to a Chinese patent application filed with the Patent Office of China on January 26, 2024, with application number 2024101184720 and public name “Energy Storage Device and Energy Storage System,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to the field of energy storage technology, and in particular to an energy storage device and an energy storage system. Background Art

[0004] Energy storage devices in the related art typically consist of multiple batteries connected in series to form a battery pack, which is then placed within a box to form a complete energy storage device. However, battery expansion during the charging and discharging process can cause degradation in battery performance, increase safety risks, and reduce the performance of the energy storage device. Furthermore, battery expansion can squeeze the main circuit board, damaging the electronic components on it and affecting the performance of the energy storage device. Summary of the Invention

[0005] The embodiments of the present invention disclose an energy storage device and an energy storage system, which can effectively prevent battery expansion to ensure various battery performances, and can avoid squeezing of a circuit mainboard when the battery expands to protect the circuit mainboard.

[0006] In order to achieve the above objectives, in a first aspect, the present invention discloses an energy storage device, comprising:

[0007] shell;

[0008] A clamping member, the clamping member is disposed in the housing, and the clamping member has;

[0009] a battery, the battery being built into the clamping space;

[0010] a mainboard mounting member, the mainboard mounting member being built into the housing and connected to the clamping member, and the mainboard mounting member being located on one side of the battery; and

[0011] A circuit main board is built into the housing and mounted on the main board mounting member, with a distance between the circuit main board and the clamping member, and the circuit main board is electrically connected to the battery.

[0012] In a second aspect, the present invention discloses an energy storage system, which has the energy storage device as described in the first aspect above.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The energy storage device and energy storage system provided in the embodiments of the present invention, by adding a clamping piece, can embed the battery into the clamping space of the clamping piece. In this way, the clamping piece can be used to clamp the battery to reduce expansion and reduce the squeezing of the circuit main board. On this basis, the present application also installs the circuit main board on the clamping piece through the main board mounting piece, so as to install and support the circuit main board with the help of the main board mounting piece, so that there can be a distance between the circuit main board and the clamping piece, so that the distance can be used to provide expansion space for the battery, avoiding squeezing the circuit main board when the battery expands. In this way, it can better avoid squeezing the circuit main board when the battery expands, and provide better and more effective protection for the circuit main board. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 is a schematic structural diagram of an energy storage device disclosed in an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of the exploded structure of the energy storage device disclosed in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the first structure of the clamping member disclosed in an embodiment of the present invention;

[0019] Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the clamping member;

[0020] Figure 5 This is a schematic diagram of the first structure of the second clamping component disclosed in an embodiment of the present invention;

[0021] Figure 6 is a schematic structural diagram of a clamping member and a battery disclosed in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of a second structure of the clamping member disclosed in an embodiment of the present invention;

[0023] Figure 8 yes Figure 7 A schematic diagram of the exploded structure of the clamping member;

[0024] Fig. 9 This is a schematic diagram of a second structure of the second clamping component disclosed in an embodiment of the present invention;

[0025] Fig.10Schematic diagram of the structure of the first clamping component disclosed in the embodiments of the present invention;

[0026] Figure 11 Schematic diagram of the structure of the bottom shell disclosed in the embodiments of the present invention;

[0027] Fig.12 Schematic diagram of the structure of the battery, clamping member, main board mounting member, and circuit main board disclosed in the embodiments of the present invention;

[0028] Fig.13 is Fig.12 exploded structural schematic diagram of;

[0029] Fig.14 Schematic diagram of the structure of the circuit main board disclosed in the embodiments of the present invention;

[0030] Fig.15 Schematic diagram of the structure of the main board mounting member disclosed in the embodiments of the present invention;

[0031] Fig.16 Schematic diagram of the structure of the main board mounting member from another perspective disclosed in the embodiments of the present invention;

[0032] Figure 17 is the cross-sectional view of the energy storage device along the Figure 1 M-M direction in;

[0033] Figure 18 Schematic diagram of the structure of the bottom shell from another perspective disclosed in the embodiments of the present invention;

[0034] Fig.19 Schematic diagram of the three-dimensional structure of the housing assembly disclosed in the embodiments of the present invention;

[0035] Figure 20 is the cross-sectional view of the housing assembly along the Fig.19 N-N direction in;

[0036] Figure 21 Schematic diagram of the structure of the holding member disclosed in the embodiments of the present invention;

[0037] Figure 22 Side view of the housing assembly disclosed in the embodiments of the present invention;

[0038] Figure 23a Schematic diagram of the three-dimensional structure of the housing assembly from another perspective disclosed in the embodiments of the present invention;

[0039] Figure 23b Schematic diagram of the three-dimensional structure of the housing assembly from yet another perspective disclosed in the embodiments of the present invention;

[0040] Figure 23c Schematic diagram of the three-dimensional structure of the energy storage device without showing the bottom shell disclosed in the embodiments of the present invention;

[0041] Figure 24a is the first structural schematic diagram of the housing assembly disclosed in the embodiments of the present invention along the Figure 23b A-A direction in

[0042] Figure 24b is the second structural schematic diagram of the housing assembly disclosed in the embodiments of the present invention along the Figure 23b A-A direction in

[0043] Figure 24c is the third structural schematic diagram of the housing assembly disclosed in the embodiments of the present invention along the Figure 23b A-A direction in

[0044] Fig.25 is the fourth structural schematic diagram of the housing assembly disclosed in the embodiments of the present invention along the Figure 23b A-A direction in

[0045] Fig.26 is the fifth structural schematic diagram of the housing assembly disclosed in the embodiments of the present invention along the Figure 23b A-A direction in

[0046] Figure 27 is the structural schematic diagram of the intermediate housing and the seal disclosed in the embodiments of the present invention;

[0047] Fig.28 is the structural schematic diagram of the intermediate housing disclosed in the embodiments of the present invention;

[0048] Figure 29 is the structural schematic diagram of the intermediate housing from another perspective disclosed in the embodiments of the present invention;

[0049] Fig.30 is the structural schematic diagram of the bottom shell from another perspective disclosed in the embodiments of the present invention;

[0050] Figure 31 is the structural schematic diagram of the top shell disclosed in the embodiments of the present invention.

[0051] Main reference numeral description

[0052] 100 - Energy storage device;

[0053] 100a - Housing assembly; 1 - Housing; 1a - First gap; 1b - Second gap; 1c - Third gap; 11 - Top shell; 111 - Second vent; 111a - Waterproof and breathable membrane; 112 - First groove; 1121 - Groove wall surface; 113 - Annular protrusion; 114 - Power plug; 115 - Second functional device; 116 - Anti - fooling protrusion; 117 - Through - hole; 12 - Intermediate housing; 121 - Stop protrusion; 1211 - First stop surface; 1211a - Second groove; 1212 - Second stop surface; 122 - Second step structure; 1221 - First step surface; 1222 - Second step surface; 1223 - Clamping protrusion; 123 - Insertion block; 123a - First insertion block; 123b - Second insertion block; 123b1 - First insertion plate; 123b2 - Second insertion plate; 124 - Anti - fooling groove; 125 - Ventilation hole; 126 - Installation through - slot; 127 - Avoidance groove; 128 - Second installation hole; 129 - Fourth installation hole; 129a - Second reinforcing rib; 13 - Bottom shell; 13a - First side wall; 13b Second side wall; 131 - First side rib; 1311 - First guiding surface; 132 - Stop plate; 133 - Second side rib; 1331 - Second guiding surface; 134 - Bottom rib; 135 - Partition; 1351 - First side surface; 1352 - Inclined surface; 136 - Limit protrusion; 137 - Protrusion; 1371 - Insertion slot;

[0054] 2 - Clamping member; 21 - First clamping component; 211 - First clamping body; 2111 - Connection surface; 212 - First flange; 2121 - First connection hole; 2122 - First avoidance hole; 2122a - Hole wall surface; 213 - Convex post; 2131 - First threaded connection hole; 214 - Rib; 215 - Second bending component; 216 - First mounting flange; 2161 - First mounting hole; 22 - Second clamping component; 221 - Second clamping body; 222 - Second flange; 2221 - Threaded hole; 2222 - Second connection hole; 2223 - Second avoidance hole; 223 - Second mounting flange; 2231 - Third mounting hole; 23 - Clamping space; 24 - First reinforcing rib; 25 - Second reinforcing rib; 26 - First protrusion;

[0055] 3 - Battery; 31 - Explosion - proof valve;

[0056] 4 - Adjusting member; 41 - First through - slot; 42 - First bending component; 42a - Bending part; 43 - Threaded component; 43a - Screw; 43b - Head; 43c - Slot; 44 - Nut;

[0057] 5 - Strapping;

[0058] 6 - Mainboard mounting member; 61 - Sleeve structure; 611 - First reinforcing rib; 62 - Second through hole; 63a - Card slot; 63b - Fourth connecting hole; 64 - First step structure; 65 - Wiring trough; 651 - Separating protrusion; 652 - Sub-wiring trough; 66 - First vent; 67 - Heat dissipation hole; 67a - First sub-heat dissipation hole; 67b - Second sub-heat dissipation hole; 67c - Third sub-heat dissipation hole;

[0059] 7 - circuit board; 71a - first through hole; 71b - third connection hole; 72 - fan; 73 - electronic component; 731 - first functional device; 74 - first conductive protrusion; 75 - second conductive protrusion;

[0060] 7a-heat sink;

[0061] 8-heat insulation; 81-second through groove;

[0062] 9- gripping member; 91- side surface; 92- first rib; 93- second rib; 94- mounting column; 941- second threaded connection hole;

[0063] 9a-seal;

[0064] 9b-Electrical connector. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0067] It will be understood that the terms "first," "second," and the like as used herein may be used herein to describe various elements, but these elements are not limited by these terms. These terms are used solely to distinguish a first element from another element. For example, a first clamping member may be referred to as a second clamping member, and similarly, a second clamping member may be referred to as a first clamping member, without departing from the scope of this application. The first clamping member and the second clamping member are both clamping members, but they are not the same clamping member.

[0068] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0069] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having", etc., specify the presence of the stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0070] Please refer to Figures 1 to 3 , embodiments of the present invention disclose an energy storage device. The energy storage device 100 includes a housing 1, a clamping member 2, a battery 3, a main board mounting member 6, and a circuit main board 7. Among them, the housing 1 is also the housing assembly 100a. The clamping member 2 is disposed inside the housing 1, and the clamping member 2 has a clamping space 23. The battery 3 is built in the clamping space 23. The main board mounting member 6 is disposed inside the housing 1 and connected to the clamping member 2, and the main board mounting member 6 is located on one side of the battery 3. The circuit main board 7 is built in the housing 1 and mounted on the main board mounting member 6, and there is a spacing between the circuit main board 7 and the clamping member 2, so as to provide an expansion space for the battery 3 to prevent the battery 3 from squeezing the circuit main board 7 when expanding and protect the circuit main board 7. Among them, the circuit main board 7 is also electrically connected to the battery 3.

[0071] Therefore, in the design of this application, in order to prevent the battery 3 from squeezing the circuit main board 7 when expanding, not only is the clamping member 2 provided to clamp the battery 3 to reduce the expansion degree of the battery 3 or prevent the battery 3 from expanding, so as to avoid the battery 3 squeezing the circuit main board 7 when expanding; but also the main board mounting member 6 is further added to mount the circuit main board 7 on the clamping member 2 through the main board mounting member 6, and the circuit main board 7 is installed and supported by the main board mounting member 6, so that there can be a spacing between the circuit main board 7 and the clamping member 2 to provide an expansion space for the battery 3, so as to better avoid the battery 3 squeezing the circuit main board 7 when expanding and provide better and more effective protection for the circuit main board 7.

[0072] In this application, the circuit main board 7 can serve as a key component for monitoring, controlling, and protecting the battery 3, and a Battery Management System (BMS) can be integrated therein. On the one hand, it can monitor and manage parameters such as the voltage, temperature, charge state, and discharge state of the battery 3, thereby avoiding dangerous situations such as overcharging, over-discharging, overcurrent, and short circuits, ensuring the safe operation of the battery cells and extending the working life of the battery cells. On the other hand, the energy storage device 100 based on this application is a battery system composed of a single battery 3, which is a low-voltage design. It can greatly improve the safety factor for operators during production and maintenance and reduce the risk factor of the product. At the same time, based on the voltage conversion function provided by the internal voltage conversion circuit of the battery management system, the low-voltage battery system can output high voltages adapted to different application scenarios, that is, it can achieve flexible step-up and step-down while reducing the operation difficulty.

[0073] Exemplarily, functional circuits with different functions are provided in the circuit main board 7. For example, a bidirectional step-up / step-down circuit (such as a Buck / Boost circuit), a bidirectional isolation circuit (such as an LLC circuit), and an AC-DC conversion circuit (such as a CCM Totem-Pole, continuous conduction totem pole), etc. It can be understood that in actual use, the circuit main board 7 can integrate different functional circuits in the circuit main board 7 according to the application scenario of the energy storage device 100 to meet the application requirements.

[0074] Optionally, the battery 3 in this application can be one, and the energy of the energy storage device 100 in this application can be 1 KWH (1 degree of electricity), 2 KWH (2 degrees of electricity), 3 KWH (3 degrees of electricity), 4 KWH (4 degrees of electricity), 5 KWH (5 degrees of electricity), etc. That is, the battery 3 in this application can be a large-capacity battery, so that a single battery 3 can constitute an energy storage device 100 to achieve independent charging and discharging, reduce the occupied space of the energy storage device 100, and thus enable the energy storage device 100 in this application to adapt to more application scenarios, such as household energy storage, mobile power supplies, etc. Compared with the energy storage device 100 using multiple batteries 3, the cost is lower, enabling families in energy-poor areas to afford and use it, and enabling people in energy-poor areas around the world to obtain affordable, reliable, and sustainable power sources to help improve the electricity consumption for production and life in energy-poor areas. Among them, "KWH" represents kilowatt-hour.

[0075] For example, when the energy storage device 100 in the present application is an energy storage device with an energy capacity of 1 kilowatt-hour (kWh), for energy-poor families, the energy storage device 100 of the present application with one kWh can provide 80 hours of lighting or 16 hours of electric fan use, etc.; or, the energy storage device 100 of the present application with one kWh can also promote small family businesses, such as supporting 80 hours of irrigation or 10 hours of sewing machine use, etc., so that people in energy-poor areas can continuously increase their family income and improve their lives; or, in terms of public health, the energy storage device 100 of the present application with one kWh can also support small medical equipment, such as small medical refrigerators, etc., which can be used to store vaccines and medicines and improve medical conditions.

[0076] The energy storage device 100 of the present application is a battery system composed of a single battery 3, which is a low-voltage design. Typically, the voltage value of a single battery 3 is relatively low, generally around 3.2V. Therefore, when the energy storage device 100 of the present application is discharged, the 3.2V DC voltage output by the battery 3 will first be boosted to 310V DC by the bidirectional buck-boost circuit on the circuit main board 7, and then inverted to 220V AC by the AC-DC conversion circuit on the circuit main board 7 to meet the charging requirements of the device to be charged, thereby achieving discharge of the energy storage device 100; and when the energy storage device 100 of the present application is charged, the external 220V AC input is first inverted to 310V DC by the AC-DC conversion circuit on the circuit main board 7, and then stepped down to 3.2V DC by the bidirectional buck-boost circuit on the circuit main board 7 to meet the charging requirements of the battery 3, thereby achieving charging of the energy storage device 100.

[0077] In addition, precisely because the battery 3 in the present application is a large-capacity battery, its expansion force is usually greater than the expansion force of multiple small-capacity batteries in the related technology, so the present application uses a clamping member 2 to clamp the battery 3, which not only provides a mounting position for the mainboard mounting member 6, so that the circuit mainboard 7 can be installed on one side of the battery 3 through the mainboard mounting member 6, but also maintains a certain distance from the battery 3 to avoid squeezing the circuit mainboard when the battery expands, so as to protect the circuit mainboard; at the same time, the battery 3 can be pressed by the clamping member 2 during charging and discharging to slow down the expansion of the battery 3, or even prevent the battery 3 from expanding, thereby ensuring the performance of the battery 3, improving its service life and reducing safety hazards.

[0078] In some embodiments, combined Figures 1 to 3As shown, the energy storage device 100 further includes an adjusting member 4. The clamping member 2 includes a first clamping part 21 and a second clamping part 22. Among them, the first clamping part 21 and the second clamping part 22 are connected, and a clamping space 23 as described above is formed between the first clamping part 21 and the second clamping part 22. The adjusting member 4 is located inside the housing 1. The first clamping part 21 and the second clamping part 22 are connected through the adjusting member 4, so that the adjusting member 4 can be used to adjust the size of the clamping space 23, so as to adjust the clamping degree of the first clamping part 21 and the second clamping part 22 on the battery 3. In this way, the situation that the clamping space 23 is too large to press the battery 3 can be avoided, ensuring that the battery 3 can be pressed by the first clamping part 21 and / or the second clamping part 22 during charging and discharging, so as to slow down the expansion degree of the battery 3, and even prevent the battery 3 from expanding, thereby ensuring the service performance of the battery 3, improving the service life and reducing the safety hazard.

[0079] It can be understood that due to inevitable processing errors, even for batteries 3 of the same model, their sizes may be different. For batteries 3 of different sizes, different sizes of clamping spaces 23 are required to adapt to the sizes of the batteries 3 to achieve the effect of clamping the batteries 3. In this regard, in this application, the first clamping part 21 and the second clamping part 22 are connected through the adjusting member 4, so as to adjust the size of the clamping space 23 by means of the adjusting member 4 to adapt to the size of the battery 3, clamp the battery 3, and prevent the battery 3 from expanding, so as to ensure that the battery 3 has excellent service performance, improve the service life of the battery 3 and reduce the safety hazard. In addition, because the size of the clamping space 23 in this application is adjustable and can adapt to the size of the battery 3, the first clamping part 21 and the second clamping part 22 can clamp batteries 3 of different sizes, and there is no need to prepare clamping members 2 with different sizes of clamping spaces 23 to adapt to the size of the battery 3, which is beneficial to cost reduction.

[0080] Moreover, because the battery 3 in this application uses a large-capacity battery, its expansion force is usually greater than that of multiple small-capacity batteries in the related art. Therefore, this application uses the first clamping part 21 and the second clamping part 22 to clamp the battery 3, and the first clamping part 21 and the second clamping part 22 can also adjust the pressing degree on the battery 3 by means of the adjusting member 4, avoiding the situation that the pressing degree on the battery 3 is too loose and the battery 3 can still generate a large expansion, thus affecting the battery performance. Furthermore, the service performance of the battery 3 can be ensured, the service life can be improved and the safety hazard can be reduced.

[0081] On this basis, in order to meet the requirement of large expansion force, the present application also limits the material of the first clamping part 21 and the second clamping part 22 to metal, such as stainless steel, iron, aluminum, aluminum alloy, copper, copper alloy, etc. The material of the first clamping part 21 and the second clamping part 22 is metal. Compared with the first clamping part 21 and the second clamping part 22 being plastic parts, the hardness of the first clamping part 21 and the second clamping part 22 can reach the range of 150HB-220HB. The first clamping part 21 and the second clamping part 22 have a strong ability to resist deformation and have a better compression effect on the battery 3, so as to prevent the battery 3 from expanding, ensure the battery 3 has excellent performance, improve the service life of the battery 3 and reduce safety hazards. Among them, "HB" represents Brinell hardness.

[0082] In this application, if Figure 3 and Figure 4 As shown, the first clamping component 21 may include a first clamping body 211 and a first flange 212 connected to the first clamping body 211, and the second clamping component 22 may include a second clamping body 221 and a second flange 222 connected to the second clamping body 221. The first flange 212 and the second flange 222 are connected by an adjusting member 4 to achieve the connection between the first clamping body 211 and the second clamping body 221. The aforementioned clamping space 23 is formed between the first clamping body 211 and the second clamping body 221, and the first flange 212 and the second flange 222 are both located outside the clamping space 23. The above-mentioned structure can facilitate the first flange 212 and the second flange 222 to provide a setting position for the adjusting member 4, so that the first clamping component 21 and the second clamping component 22 can be connected through the adjusting member 4.

[0083] As an optional embodiment, the adjusting member 4 may include a first through-slot 41 and a first bent member 42, wherein the first through-slot 41 is provided in the first flange 212, and the first bent member 42 is provided in the second flange 222, and the first bent member 42 is passed through the first through-slot 41. The first bent member 42 has a bent portion 42a, which protrudes from the surface of the first flange 212 facing away from the second flange 222, and the length of the bent portion 42a protruding relative to the first flange 212 is variable. The bent portion 42a can be bent until it abuts against the first flange 212, thereby achieving a connection between the first flange 212 and the second flange 222.

[0084] It can be understood that when assembling the first clamping member 21 and the second clamping member 22, when the first flange 212 and the second flange 222 are in contact with each other, the clamping space 23 is the smallest, and the length by which the bent portion 42a protrudes relative to the first flange 212 is the longest. Therefore, in order to ensure that the first clamping member 21 and the second clamping member 22 can clamp the battery 3, the size of the battery 3 is generally slightly larger than the smallest clamping space 23. When the size of the battery 3 is larger than the smallest clamping space 23, there will be a gap between the first flange 212 and the second flange 222 to increase the clamping space 23, and the length by which the bent portion 42a protrudes relative to the first flange 212 becomes shorter. The first bending member 42 can be used to make up for the gap between the first flange 212 and the second flange 222, so that the first clamping member 21 and the second clamping member 22 can always be in close contact with the battery 3, press the battery 3, prevent the battery 3 from expanding, and thus ensure the performance of the battery 3, extend its service life and reduce potential safety hazards. The adjusting member 4 has the above structure, which is relatively simple and easy to implement, and is conducive to cost reduction.

[0085] As another alternative embodiment, the adjusting member 4 can be a threaded member, so that the adjusting member 4 can be used to change the distance between the first flange 212 and the second flange 222 when rotated. That is, by rotating the adjusting member 4, the distance between the first flange 212 and the second flange 222 can be changed, thereby changing the size of the clamping space 23 to adapt to the size of the battery 3, clamp the battery 3, prevent the battery 3 from expanding, ensure that the battery 3 has excellent performance, extend the service life of the battery 3 and reduce potential safety hazards.

[0086] Exemplarily, when the size of the battery 3 is larger than the smallest clamping space 23, there will be a gap between the first flange 212 and the second flange 222 to increase the clamping space 23. At this time, the threaded member can make up for the gap between the first flange 212 and the second flange 222, so that the first clamping member 21 and the second clamping member 22 can always be in close contact with the battery 3, press the battery 3, prevent the battery 3 from expanding, and thus ensure the performance of the battery 3, extend its service life and reduce potential safety hazards. The adjusting member 4 has the above structure, and the structure of the adjusting member 4 is relatively simple and easy to implement, and is conducive to cost reduction.

[0087] As yet another alternative embodiment, there are multiple adjusting members 4, and the multiple adjusting members 4 include a first adjusting member and a second adjusting member. The first adjusting member includes a first through groove 41 and a first bending member 42, and the second adjusting member is a threaded member. In this way, the connection between the first flange 212 and the second flange 222 can be achieved through the cooperation of the first through groove 41 and the first bending member 42, and also through threaded connection.

[0088] In the present application, a solution is adopted in which there are multiple adjusting members 4, and the adjusting member 4 includes multiple first adjusting members and multiple second adjusting members. The multiple first adjusting members and the multiple second adjusting members are alternately arranged. In this way, the connection reliability between the first clamping member 21 and the second clamping member 22 can be improved, and the clamping effect of the first clamping member 21 and the second clamping member 22 on the battery 3 can be enhanced.

[0089] In some embodiments, as Figure 4 shown, when the adjusting member 4 is a threaded member, as a first optional embodiment, the first flange 212 is provided with a first connection hole 2121, and the second flange 222 is provided with a threaded hole 2221 corresponding to the first connection hole 2121. The adjusting member 4 includes a screw rod 43a and a head 43b with a diameter larger than that of the screw rod 43a. The screw rod 43a passes through the first connection hole 2121 and the threaded hole 2221, and one end of the screw rod 43a is threadedly connected to the threaded hole 2221 on the second flange 222. The head 43b is connected to the other end of the screw rod 43a and abuts against the surface of the first flange 212 facing away from the second flange 222. Optionally, the adjusting member 4 can be a bolt or a screw, etc.

[0090] In this embodiment, tools such as a flat-blade screwdriver, a Phillips screwdriver or a Pozidriv screwdriver can be inserted into the slot 43c of the head 43b to twist the screw rod 43a with the above tools, adjust the distance between the first flange 212 and the second flange 222 to adapt to the size of the battery 3, so that the first clamping member 21 and the second clamping member 22 can always be closely attached to the battery 3, compress the battery 3, prevent the battery 3 from swelling, and further ensure the service performance of the battery 3, improve the service life and reduce potential safety hazards.

[0091] Furthermore, in some embodiments, the adjusting member 4 may further include a nut 44. The nut 44 is threadedly sleeved on the outer periphery of the other end of the screw rod 43a, and the nut 44 abuts against the surface of the second flange 222 facing away from the first flange 212. In this way, the connection reliability between the first clamping member 21 and the second clamping member 22 can be further improved, and the clamping effect of the first clamping member 21 and the second clamping member 22 on the battery 3 can be enhanced.

[0092] As a second alternative embodiment, the first flange 212 is provided with a first connection hole 2121, and the second flange 222 is provided with a second connection hole 2222 corresponding to the first connection hole 2121. The adjusting member 4 includes a threaded member 43 and a nut 44. The threaded member 43 includes a screw rod 43a and a head 43b with a diameter larger than that of the screw rod 43a. The screw rod 43a passes through the first connection hole 2121 and the second connection hole 2222. The head 43b is connected to one end of the screw rod 43a and abuts against the surface of the first flange 212 facing away from the second flange 222. The nut 44 is threadedly sleeved on the outer periphery of the other end of the screw rod 43a and abuts against the surface of the second flange 222 facing away from the first flange 212. Optionally, the threaded member 43 can be a bolt or a screw, etc.

[0093] In this embodiment, tools such as a flat-blade screwdriver, a Phillips screwdriver or a Pozidriv screwdriver can also be inserted into the slot 43c of the head 43b to twist the screw rod 43a with the help of the above tools, adjust the distance between the first flange 212 and the second flange 222 to fit the size of the battery 3, so that the first clamping member 21 and the second clamping member 22 can always be closely attached to the battery 3, press the battery 3, prevent the battery 3 from swelling, and further ensure the use performance of the battery 3, improve the service life and reduce the safety hazard.

[0094] Since the energy storage device 100 in the present application uses a single battery 3, which is relatively small in volume and relatively low in cost, the thicknesses of the first clamping member 21 and the second clamping member 22 are usually designed to be relatively thin to fit the characteristics of the energy storage device 100 with small volume and low cost. Therefore, the depth of the threaded hole 2221 on the second flange 222 is also relatively small. Thus, the depth of the threaded hole on the nut 44 is usually larger than the depth of the threaded hole 2221 on the second flange 222. Then, the threaded connection between the screw rod 43a and the nut 44 is more stable than the threaded connection between the screw rod 43a and the threaded hole 2221 on the second flange 222. Therefore, the connection between the first flange 212 and the second flange 222 is realized through the cooperation of the screw rod 43a and the nut 44, and compared with the connection realized through the cooperation of the screw rod 43a and the threaded hole 2221 on the second flange 222, the connection reliability between the first clamping member 21 and the second clamping member 22 is better, so as to improve the clamping effect of the first clamping member 21 and the second clamping member 22 on the battery 3.

[0095] It can be understood that in other embodiments, when the adjusting member 4 is a threaded member and there are multiple adjusting members 4, some of the adjusting members 4 can be structures including a screw rod 43a and a head 43b, and some of the other adjusting members 4 can be structures including a threaded member 43 and a nut 44.

[0096] In some embodiments, such as Figure 4 and Figure 5As shown, the first clamping component 21 further includes a first reinforcing rib 24, which is respectively connected to the first flange 212 and the first clamping body 211; and / or, the second clamping component 22 further includes a second reinforcing rib 25, which is respectively connected to the second flange 222 and the second clamping body 221.

[0097] Reinforcing ribs are provided at the connection between the clamping body (i.e., the first clamping body 211 and the second clamping body 221) and the flange (i.e., the first flange 212 and the second flange 222) to improve the structural strength of the first clamping part 21 and the second clamping part 22, so that the clamping part 2 can better cope with the large expansion force of the battery 3.

[0098] In some embodiments, the first clamping component 21 and the second clamping component 22 can be fixed in the housing 1 by screws or bolts, so as to facilitate the installation and fixation of the clamping member 2 in the housing 1 .

[0099] In some embodiments, combined Figures 6 to 8 As shown, the energy storage device also includes a strap 5, which is sleeved on the periphery of the first clamping part 21 and the second clamping part 22 to further fix and clamp the first clamping part 21 and the second clamping part 22, thereby further improving the clamping effect of the first clamping part 21 and the second clamping part 22 on the battery 3, and thus enabling the clamping part 2 to better cope with the large expansion force of the battery 3.

[0100] When the clamping parts (i.e., the first clamping part 21 and the second clamping part 22) include flanges (i.e., the first flange 212 and the second flange 222), the flanges are provided with avoidance holes for the strap 5 to pass through, thereby avoiding interference between the strap 5 and the flanges; or, the flanges are located on one side of the strap 5, and at this time the strap 5 does not pass through the flanges, but is staggered with the flanges, thereby avoiding interference between the strap 5 and the flanges.

[0101] For example, Figures 6 to 10As shown, the first flange 212 is further provided with a first avoidance hole 2122, and the second flange 222 is further provided with a second avoidance hole 2223. The projection of the circumferential edge of the second avoidance hole 2223 on the first flange 212 coincides with the circumferential edge of the first avoidance hole. The strap 5 is sleeved on the periphery of the first clamping body 211 and the second clamping body 221, and the strap 5 is passed through the first avoidance hole 2122 and the second avoidance hole 2223. The first clamping body 211 has a connecting surface 2111 for connecting with the first flange 212, and the first avoidance hole 2122 has a The hole wall 2122a is coplanar with the connecting surface, so that when the strap 5 is passed through the first avoidance hole 2122 and the second avoidance hole 2223, the strap 5 can respectively abut against the connecting surface 2111 and the hole wall 2122a. Compared with the manner in which the hole wall 2122a and the connecting surface 2111 are not coplanar (for example, the hole wall 2122a is higher than the connecting surface 2111), there will be no gap between the strap 5 and the clamping body, which can ensure the tightness of the fit between the strap 5 and the clamping body and improve the tightening effect of the strap 5 on the first clamping part 21 and the second clamping part 22.

[0102] When the present application adopts the method of opening an avoidance hole in the flange to avoid the strap 5, and the adjusting member 4 includes a first through groove 41 and a first bending part 42, the first avoidance hole 2122 and the first through groove 41 at least partially overlap in the projection of the first clamping body 211, that is, in the protruding direction of the first flange 212 relative to the first clamping body 211, the first avoidance hole 2122 is at least partially arranged corresponding to the first through groove 41, and the second flange 222 is also provided with a second avoidance hole 2223, and the projection of the circumferential edge of the second avoidance hole 2223 on the first flange 212 overlaps with the circumferential edge of the first avoidance hole 2122; the strap 5 is sleeved on the periphery of the first clamping body 211 and the second clamping body 221, and the strap 5 is passed through the first avoidance hole 2122 and the second avoidance hole 2223.

[0103] It is understandable that when the battery 3 expands, the connection between the first clamping part 21 and the second clamping part 22 is generally the most likely to collapse (that is, the first bent part 42 is likely to break away from the first through groove 41). Through the above design, the projections of the first avoidance hole 2122 and the first through groove 41 on the first clamping body 211 can at least partially overlap. Since the strap 5 is passed through the first avoidance hole 2122, the projection of the first bent part 42 on the first clamping body 211 can at least partially overlap with the projection of the strap 5 on the first clamping body 211. That is, The protruding direction of the edge 212 relative to the first clamping body 211 can prevent the first bending part 42 and the strap 5 from being completely staggered, so that the position where the strap 5 acts on the clamping part 2 and the position where the first bending part 42 acts on the clamping part 2 can be roughly close to each other, which not only improves the clamping effect of the first clamping part 21 and the second clamping part 22; at the same time, the strap 5 can also be used to provide further fastening for the position where the first clamping part 21 and the second clamping part 22 are most likely to collapse, thereby reducing the possibility of the first clamping part 21 and the second clamping part 22 collapsing.

[0104] In some embodiments, a first snap-fit portion (not shown) is provided at one end of the strap 5, and a second snap-fit portion (not shown) is provided at the other end of the strap 5. The second snap-fit portion engages with the first snap-fit portion, so that the two ends of the strap 5 can be fixed by the cooperation of the first snap-fit portion and the second snap-fit portion. One of the first snap-fit portion and the second snap-fit portion can be a snap-fit groove, and the other can be a clip strip. The clip strip is inserted into the snap-fit groove to achieve the snap-fit connection between the first snap-fit portion and the second snap-fit portion, thereby fixing the two ends of the strap 5.

[0105] Exemplarily, the first snap-on portion and / or the second snap-on portion may be multiple, for example, there are multiple first snap-on portions and there may be one second snap-on portion, multiple first snap-on portions are arranged at intervals along the extension direction of the strap 5 (i.e., the circumferential direction of the battery 3), and the second snap-on portion can be plugged into any first snap-on portion; or, there are multiple second snap-on portions and there is one first snap-on portion, multiple second snap-on portions are arranged at intervals along the extension direction of the strap 5, and the first snap-on portion can be plugged into any second snap-on portion; or, there are multiple first snap-on portions and multiple second snap-on portions, multiple first snap-on portions are arranged at intervals along the extension direction of the strap 5, and multiple second snap-on portions are arranged at intervals along the extension direction of the strap 5, and any first snap-on portion can be plugged into any second snap-on portion; by adopting the above-mentioned design method, the size of the clamping ring formed when the two ends of the strap 5 are fixed can be changed, so that the strap 5 can adapt to form clamping parts 2 of different sizes of clamping spaces 23 to clamp batteries 3 of different sizes, which has higher applicability.

[0106] In some embodiments, the outer side surface of the first clamping part 21 and / or the second clamping part 22 is provided with a plurality of first protrusions 26 arranged at intervals. Specifically, the outer side surface of the first clamping body 211 and / or the second clamping body 221 is provided with a plurality of first protrusions 26 arranged at intervals. Any two adjacent first protrusions 26 are respectively located on two opposite sides of the strap 5. In this way, the two adjacent first protrusions 26 can be used to limit the position of the strap 5 to prevent the strap 5 from slipping, so that the strap 5 can better fix and clamp the first clamping part 21 and the second clamping part 22.

[0107] In some embodiments, a second protrusion (not shown) is provided on the inner side surface of the first clamping part 21 and / or the second clamping part 22, specifically, a second protrusion is provided on the inner side surface of the first clamping body 211 and / or the second clamping body 221, and the second protrusion abuts against the battery 3, and the second protrusion can deform when subjected to force to clamp the battery 3, thereby improving the clamping degree of the first clamping part 21 and the second clamping part 22 on the battery 3; at the same time, it can be understood that, assuming that the size of the clamping space has been adjusted, when batteries 3 of different sizes are located in the clamping space, the degree of compression of the battery 3 on the second protrusion will be different. The larger the battery 3, the greater the degree of compression on the second protrusion, and the greater the degree of deformation of the second protrusion, so that the clamping space can be adaptively increased, so the setting of the second protrusion can also adapt to batteries 3 of different sizes.

[0108] For example, the second protrusion can be deformed when subjected to force, so that soft contact can be formed between the battery 3 and the clamping parts (ie, the first clamping part 21 and the second clamping part 22 ), thereby avoiding wear on the battery 3 .

[0109] In some embodiments, combined Figures 6 to 11 As shown, the inner side wall of the housing 1 is provided with a first side rib 131. The first side rib 131 abuts against the first clamping member 21 and / or the second clamping member 22. The first side rib 131 is provided with a first guide surface 1311, such as a guide slope or a guide arc. The first guide surface 1311 is primarily used to guide the clamping member 2 to be installed to a predetermined position within the housing 1, such as the bottom of the housing 1. For example, a mounting opening is provided at one end of the housing 1. The first side rib 131 can extend along the opening direction of the mounting opening to connect with the inner bottom wall of the housing 1. The first guide surface 1311 is provided on the side of the first side rib 131 facing away from the inner bottom wall of the housing 1. During assembly, the first clamping member 21 and the second clamping member 22 can be inserted into the housing 1 through the mounting opening and can be installed to the bottom of the housing 1 under the guidance of the first guide surface 1311.

[0110] The arrangement of the first side rib 131 can increase the structural strength of the housing 1, reduce the degree of deformation of the housing 1 when it is externally squeezed, or prevent the housing 1 from deforming, so as to protect the battery 3 from being squeezed when the housing 1 is externally squeezed. At the same time, a first guiding surface 1311 is provided on the first side rib 131, which can not only prevent the first side rib 131 from blocking or hitting the first clamping member 21 and the second clamping member 22 when the first clamping member 21 and the second clamping member 22 are inserted into the housing 1 from the installation opening, but also play a guiding role in the installation of the first clamping member 21 and the second clamping member 22.

[0111] In some embodiments, there are multiple first side ribs 131, and the multiple first side ribs 131 are arranged at intervals along the circumferential direction of the housing 1. The inner side wall of the housing 1 includes a first side wall 13a and a second side wall 13b. The first side wall 13a faces the side of the battery 3, and the second side wall 13b faces the large surface of the battery 3. A stop plate 132 protrudes from the second side wall 13b, and the stop plate 132 is connected to at least one first side rib 131 provided on the first side wall 13b. For example, as Figure 11 shown, the stop plate 132 is connected to two first side ribs 131 provided on the first side wall 13a, and the stop plate 132 is spaced from the first side wall of the housing 1, and the stop plate 132 also abuts against the first clamping member 21 and / or the second clamping member 22 to limit the position of the first clamping member 21 and / or the second clamping member 22 in the housing 1, avoid the clamping member 2 driving the battery 3 to shake or move, thereby avoiding collision with the battery 3 and protecting the battery 3. The stop plate 132 protrudes from the second side wall 13b, and the stop plate 132 extends to be connected to the first side rib 131, and the stop plate 132 can abut against the first clamping member 21 and / or the second clamping member 22. In this way, the first side rib 131 abuts against the first clamping member 21 and / or the second clamping member 22 through the stop plate. Compared with the way that the first side rib 131 directly abuts against the clamping members (the first clamping member 21, the second clamping member 22), the contact area between the first side rib 131 and the clamping members can be increased, the limiting effect of the first side rib 131 on the clamping members can be improved, and at the same time, the first side rib 131 can be prevented from wearing the clamping members.

[0112] In addition, in the present application, the stop plate 132 is not only connected to the second side wall 13b, but also connected to the first side rib 131 and the inner bottom wall of the housing 1. When the stop plate 132 abuts against the clamping member, the first side rib 131 and the inner bottom wall of the housing 1 can support the stop plate 132 and provide a supporting force for the stop plate 132, so that the stop plate 132 is not easily damaged when it is abutted by the clamping member.

[0113] Furthermore, since the stop plate 132 is spaced apart from the first side wall 13 a of the housing 1 , this helps to reduce the use of materials and the weight of the housing 1 , thereby reducing costs and achieving a lightweight design.

[0114] In this application, if Fig.12 and Fig.13 As shown, the motherboard mounting member 6 can be a support column structure or a housing structure with a cavity. When the motherboard mounting member 6 is a support column structure, it is protruded from the surface of the first clamping member 21 facing away from the battery 3. The circuit board 7 is positioned on the end surface of the motherboard mounting member 6 facing away from the first clamping member 21, ensuring a gap between the circuit board 7 and the first clamping member 21. When the motherboard mounting member 6 is a housing structure with a cavity, the circuit board 7 is mounted in the cavity of the motherboard mounting member 6, ensuring a gap between the circuit board 7 and the first clamping member 21.

[0115] Preferably, the mainboard mounting member 6 is a shell structure with a cavity, which not only allows a distance to be provided between the circuit mainboard 7 and the first clamping member 21 to avoid squeezing the circuit mainboard 7 when the battery 3 expands, but also protects the circuit mainboard 7 from being squeezed when subjected to external squeezing, thereby helping to ensure the performance and service life of the circuit mainboard 7.

[0116] When the motherboard mounting member 6 is a housing structure having a cavity, the present application further wishes to explain that even if the battery 3 expands, causing the first clamping member 21 to deform, because the motherboard mounting member 6 is connected to the first clamping member 21 and the circuit board 7 is mounted on the motherboard mounting member 6, when the battery 3 expands, the motherboard mounting member 6 will move in the direction of the battery's expansion (outward), and the circuit board 7 will move outward along with the motherboard mounting member 6. This allows the circuit board 7 to maintain a certain distance from the motherboard mounting member 6 even when the battery 3 expands, thereby preventing the circuit board 7 from being squeezed even when the battery 3 expands. Furthermore, typically, components are provided on the side of the circuit board 7 facing away from the first clamping member 21, that is, on the side of the circuit board 7 facing the motherboard mounting member 6. Thus, when the battery 3 expands to a certain extent and cannot squeeze the housing 1, shortening the distance between the first clamping member 21 and the circuit board 7, even if squeezed, it is on the side of the circuit board 7 without components, thereby further effectively protecting the components on the circuit board 7.

[0117] Furthermore, if Fig.13 、 Fig.14As shown, a boss 213 is protruded from the middle of the clamping member 2, that is, a boss 213 is protruded from the middle of the first clamping part 21, specifically, a boss 213 is protruded from the middle of the first clamping body 211. The circuit main board 7 is provided with a first through hole 71a, and the boss 213 is passed through the first through hole 71a on the circuit main board 7. During assembly, the circuit main board 7 is usually first mounted to the main board mounting member 6, and then the circuit main board 7 and the main board mounting member 6 are assembled to the first clamping member 21. In this way, when the circuit main board 7 and the main board mounting member 6 are assembled to the first clamping member 21, the boss 213 can cooperate with the first through hole 71a to position the assembly of the circuit main board 7 and the main board mounting member 6, thereby facilitating the assembly between the circuit main board 7 and the main board mounting member 6 and the first clamping member 21.

[0118] Furthermore, the boss 213 can pass through the first through hole 71a and be connected to the inner wall surface of the mainboard mounting member 6, so that the boss 213 can be used to support the middle part of the first clamping part 21, thereby improving the bearing capacity of the mainboard mounting member 6 to avoid the circuit mainboard 7 and the battery 3 from being squeezed when subjected to external pressure, thereby protecting the circuit mainboard 7 and the battery 3.

[0119] Furthermore, if Figures 13 to 15 As shown, the motherboard mounting member 6 is provided with a sleeve structure 61 located in the cavity of the motherboard mounting member 6, and the boss 213 on the first clamping member 21 is passed through the hollow portion of the sleeve structure 61 to realize the connection between the boss 213 and the motherboard mounting member 6, thereby providing connection stability and installation convenience between the boss 213 and the motherboard mounting member 6.

[0120] Illustratively, the outer circumferential surface of the sleeve structure 61 is provided with a plurality of first reinforcing ribs 611. These ribs are arranged in a spaced arrangement along the circumference of the sleeve structure 61 within the cavity of the motherboard mounting member 6, and each of the ribs 611 is connected to the inner wall surface of the motherboard mounting member 6. The provision of the first reinforcing ribs 611 further enhances the structural strength of the motherboard mounting member 6, improving its load-bearing capacity and preventing the circuit board 7 and battery 3 from being squeezed when subjected to external pressure, thereby protecting the circuit board 7 and battery 3.

[0121] In some embodiments, combined Figures 13 to 16As shown, the boss 213 is provided with a first threaded connection hole 2131, and the mainboard mounting part 6 is provided with a second through hole 62 connected to the interior of the sleeve structure 61. Bolts, screws and other fasteners are sequentially passed through the second through hole 62, the hollow part of the sleeve structure 61 and the first threaded connection hole 2131, and the fastener is threadedly connected to the first threaded connection hole 2131 on the boss 213 to achieve the installation and fixation between the mainboard mounting part 6 and the first clamping part 21. The setting of the boss 213 can not only support the mainboard mounting part 6 to improve the bearing capacity of the mainboard mounting part 6, thereby protecting the circuit mainboard 7 and the battery 3 from being squeezed when subjected to external extrusion, but also provide a connection position for the installation and fixation between the mainboard mounting part 6 and the first clamping part 21, so as to facilitate the installation and connection between the mainboard mounting part 6 and the first clamping part 21.

[0122] In some embodiments, a card slot 63a is provided on the edge of the motherboard mounting member 6, and a protrusion 214 is provided on the surface of the clamping member 2 facing the motherboard mounting member 6, that is, a protrusion 214 is provided on the surface of the first clamping member 21 facing the motherboard mounting member 6, specifically, a protrusion 214 is provided on the surface of the first clamping body 211 facing the motherboard mounting member 6, wherein the protrusion 214 extends in a direction toward the motherboard mounting member 6, and the protrusion 214 is inserted into the card slot 63a, so that the insertion effect of the protrusion 214 and the card slot 63a can be utilized to position and limit the installation of the motherboard mounting member 6 and the first clamping member 21, so as to facilitate the installation of the motherboard mounting member 6 between the first clamping member 21, thereby helping to improve the installation efficiency of the motherboard mounting member 6.

[0123] In some embodiments, the edge of the circuit board 7 is provided with a third connection hole 71b, for example, Fig.14 and Fig.15 As shown, third connection holes 71b are provided at the four corners of the circuit main board 7. Correspondingly, the main board mounting member 6 also has fourth connection holes 63b. The projection of the circumferential edge of the fourth connection hole 63b on the circuit main board 7 coincides with the circumferential edge of the third connection hole 71b, that is, the fourth connection hole 63b is provided corresponding to the third connection hole 71b. Fasteners such as bolts and screws are sequentially inserted through the third connection holes 71b and the fourth connection holes 63b, and the fasteners are threadedly connected to the fourth connection holes 63b to achieve installation and fixation between the circuit main board 7 and the main board mounting member 6. The above method is used to achieve installation and fixation between the circuit main board 7 and the main board mounting member 6, and the installation operation is relatively simple and easy to operate.

[0124] In some embodiments, the edge of the motherboard mounting member 6 is provided with a first step structure 64, which extends along the periphery of the motherboard mounting member 6, and the first step structure 64 is sleeved on the periphery of the clamping member 2, that is, the first step structure 64 is sleeved on the periphery of the first clamping component 21, specifically, the first step structure 64 is sleeved on the periphery of the first clamping body 211, and the first step structure 64 also abuts against the top of the battery 3. The provision of the first step structure 64, on the one hand, enables the motherboard mounting member 6 to wrap around the side of the first clamping body 211, and can achieve further engagement between the motherboard mounting member 6 and the first clamping body 211, so that the motherboard mounting member 6 can be more conveniently installed on the first clamping component 21, thereby further improving the installation efficiency of the motherboard mounting member 6; on the other hand, it should be noted that since the clamping member 2, battery 3 and adjustment member 4 in the present application are all located in the housing 1, the housing 1 generally includes at least two shells, such as the housing 1 includes a top shell 11 and a bottom shell 13. The top shell 11 and the bottom shell 13 are connected to form a receiving space therebetween to accommodate the clamping member 2, the battery 3 and the adjusting member 4. At the same time, since the adjusting member 4 needs to be adjusted during assembly to make the clamping space 23 adapt to the size of the battery 3, the battery 3 and the clamping member 2 are usually assembled together first, and then the bottom of the battery 3 and the clamping member 2 as a whole are inserted into the internal space of the bottom shell 13 through the opening of the bottom shell 13, and finally the top shell 11 is assembled. This installation process is generally understood as the normal installation of the battery 3. However, since the depth of the inner space of the bottom shell 13 is usually much deeper than that of the inner space of the top shell 11 in the height direction of the battery 3, when the bottom of the battery 3 and the clamping member 2 are first installed into the inner space of the bottom shell 13 through the opening of the bottom shell 13, when the battery 3 and the clamping member 2 are released, there is still a certain distance between the bottom of the battery 3 and the clamping member 2 and the inner bottom surface of the bottom shell 13, so that the battery 3 and the clamping member 2 will collide with the bottom shell 13, which is easy to damage the battery 3 and the clamping member 2. The clamping member 2 and the bottom shell 13 may be damaged to a certain extent. Therefore, during assembly in this application, the battery 3 and the clamping member 2 are usually assembled together first, and then the top of the battery 3 and the clamping member 2 are connected to the top shell 11. Finally, the bottom shell 13 is placed on the outer periphery of the battery 3 and the clamping member 2, and the bottom shell 13 is connected to the top shell 11. This installation process is usually understood as the inverted installation of the battery 3. Compared with the battery 3 when the battery 3 is installed upright, the battery 3 can avoid the collision between the battery 3 and the clamping member 2 and the bottom shell 13 when the battery 3 is inverted. Based on this, the first step structure 64 abuts against the top of the battery 3, which can reduce the possibility of the battery 3 detaching from the clamping space 23 when the battery 3 is inverted.

[0125] In some embodiments, a wiring groove 65 is provided on the outer surface of the main board mounting member 6. A partition protrusion 651 is provided in the wiring groove 65 to divide the wiring groove 65 into a plurality of sub-wiring grooves 652. The plurality of sub-wiring grooves 652 are used to separate the wire bundles electrically connected to the circuit main board 7. In this way, the wiring groove 65 can be used to bind and guide the wire bundles electrically connected to the circuit main board 7, so that the circuit layout can be more concise, thereby avoiding problems such as wire bundle chaos, cross distribution, and mutual entanglement, which is conducive to reducing the occupation of the internal space of the housing 1 by the wire bundles. Among them, the wire bundle is also electrically connected to the power plug 114 on the housing 1 to achieve electrical connection between the power plug 114 and the circuit main board 7. Thus, during discharging, the current output by the battery 3 is first transmitted to the circuit main board 7, then transmitted to the power plug 114 through the wire bundle, and finally transmitted to the device to be charged to achieve discharging of the battery 3; during charging, the external current is transmitted to the circuit main board 7 through the power plug 114 and the wire bundle, and then transmitted to the battery 3 to achieve charging of the battery 3.

[0126] In some embodiments, a second side rib 133 is further convexly provided on the inner side wall of the housing 1. The second side rib 133 abuts against the main board mounting member 6. A bottom rib 134 is convexly provided on the inner bottom wall of the housing 1. A partition 135 is provided between the bottom rib 134 and the second side rib 133. The partition 135 is connected to the inner bottom wall of the housing 1 and abuts against the main board mounting member 6. On the one hand, the provision of the second side rib 133 and the bottom rib 134 can increase the structural strength of the housing 1, slow down the degree of deformation of the housing 1 when it is externally squeezed, or prevent the housing 1 from deforming, so as to protect the battery 3 and the circuit main board 7 from being squeezed when the housing 1 is externally squeezed; on the other hand, the provision of the second side rib 133 and the partition 135 enables the main board mounting member 6 to be abutted and stopped by the second side rib 133 and the partition 135, so that the position of the main board mounting member 6 in the housing 1 can be restricted, avoiding shaking or moving of the whole of the main board mounting member 6, the circuit main board 7, the clamping member 2, and the battery 3, and further avoiding collision with the circuit main board 7 and the battery 3, thereby protecting the circuit main board 7 and the battery 3.

[0127] In addition, in the present application, the partition 135 is not only connected to the second side rib 133 and the bottom rib 134, but also connected to the inner bottom wall of the housing 1. When the partition 135 abuts against the main board mounting member 6, the partition 135 will be restricted by the second side rib 133, the bottom rib 134, and the inner bottom wall of the housing 1. Then, the second side rib 133, the bottom rib 134, and the inner bottom wall of the housing 1 can provide binding force for the partition 135, so that the partition 135 is not easily squeezed and damaged when being abutted by the main board mounting member 6.

[0128] When the first side rib 131 and the second side rib 133 exist at the same time, not only can the first side rib 131 be used to limit the position of the clamping part 2 in the shell 1, but the second side rib 133 can also be used to limit the position of the mainboard mounting part 6 in the shell 1. This can better limit the position of the mainboard mounting part 6, the circuit main board 7, the clamping part 2, and the battery 3 as a whole in the shell 1, and the limiting effect is better, preventing collisions with the circuit main board 7 and the battery, thereby better protecting the circuit main board 7 and the battery 3.

[0129] In some embodiments, the second side rib 133 may be provided with a second guide surface 1331, such as a guide slope or a guide arc. The second guide surface 1331 is primarily used to guide the motherboard mounting member 6 to a predetermined position within the housing 1, such as the bottom of the housing 1. For example, a mounting opening is provided at one end of the housing 1, and the second side rib 133 may extend along the opening direction of the mounting opening to connect with the inner bottom wall of the housing 1. The second guide surface 1331 is provided on the side of the second side rib 133 facing away from the inner bottom wall of the housing 1. During assembly, the motherboard mounting member 6 can be inserted into the housing 1 through the mounting opening and, guided by the second guide surface 1331, installed to the bottom of the housing 1. This not only prevents the second side rib 133 from blocking or colliding with the motherboard mounting member 6 when the motherboard mounting member 6 is inserted into the housing 1 through the mounting opening, but also serves to guide the installation of the motherboard mounting member 6.

[0130] In some embodiments, combined Figures 13 to 16 As shown, the mainboard mounting member 6 is provided with a first vent 66 and a heat dissipation hole 67 which are connected to each other, and the housing 1 is provided with a second vent 111, which is connected to the first vent 66 and the heat dissipation hole 67 respectively; a fan 72 and electronic components 73 are provided on the circuit mainboard 7, and the fan 72 forms heat convection through the first vent 66, the heat dissipation hole 67 and the second vent 111 to achieve heat dissipation of the electronic components 73, thereby achieving cooling of the electronic components 73, avoiding the electronic components 73 from being always operated in a high-temperature environment, and avoiding failure of the electronic components 73, thereby ensuring the normal operation of the electronic components 73 and improving the safety of the energy storage device 100.

[0131] Among them, when the fan 72 is started to dissipate heat from the electronic components 73, in one exemplary case, under the action of the fan 72, external gas enters the interior of the housing 1 from the second ventilation opening 111, enters the cavity of the main board mounting member 6 through the heat dissipation holes 67, flows through the electronic components 73, takes away the heat of the electronic components 73, then discharges to the outside of the main board mounting member 6 from the first ventilation opening 66, and finally part of the gas will be discharged to the outside of the housing 1 from the second ventilation opening 111, and the other part will re-enter the cavity of the main board mounting member 6 through the heat dissipation holes 67, so as to achieve the effect of dissipating heat from the electronic components 73. In another exemplary case, under the action of the fan 72, external gas enters the interior of the housing 1 from the second ventilation opening 111, enters the cavity of the main board mounting member 6 through the first ventilation opening 66, blows towards the electronic components 73 and flows through the electronic components 73, takes away the heat of the electronic components 73, then discharges to the outside of the main board mounting member 6 from the heat dissipation holes 67, and finally part of the gas will be discharged to the outside of the housing 1 from the second ventilation opening 111, and the other part will re-enter the cavity of the main board mounting member 6 through the first ventilation opening 66, so as to achieve the effect of dissipating heat from the electronic components 73.

[0132] In the present application, the heat dissipation holes 67 can be one or more. When there are multiple heat dissipation holes 67, the multiple heat dissipation holes 67 include a first sub-heat dissipation hole 67a arranged adjacent to the bottom of the battery 3, a second sub-heat dissipation hole 67b arranged adjacent to the top of the battery 3, and a third sub-heat dissipation hole 67c arranged adjacent to the middle of the battery 3. By providing multiple heat dissipation holes 67, when the fan 72 is started to dissipate heat from the electronic components 73, gas can enter the cavity of the main board mounting member 6 from multiple directions, or flow out of the outside of the main board mounting member 6 from multiple directions, so that the flow rate of the gas can be increased and the heat dissipation effect can be improved.

[0133] Exemplarily, the first sub-heat dissipation hole 67a and one of the third sub-heat dissipation holes 67c can also be used for the wire harness to pass through and enter the cavity of the main board mounting member 6. That is, one end of a part of the wire harness can pass through the first sub-heat dissipation hole 67a and enter the cavity of the main board mounting member 6 to be electrically connected to the circuit board 7 (such as the first conductive protrusion 74 on the circuit board 7), and one end of the other part of the wire harness can pass through one of the third sub-heat dissipation holes 67c and enter the cavity of the main board mounting member 6 to be electrically connected to the circuit board 7 (such as the second conductive protrusion 75 on the circuit board 7).

[0134] In some embodiments, in combination with Figures 13 to 18As shown, the first vent 66 is provided near the top of the battery 3, and a first gap 1a is provided between the mainboard mounting member 6 and the inner side wall of the housing 1, wherein the first side rib 131, the stop plate 132, the second side rib 133 and the partition 135 are all located in the first gap 1a, and the first gap 1a is respectively connected to the second vent 111, the second sub-heat dissipation hole 67b and the third sub-heat dissipation hole 67c, and a second gap 1b is provided between the mainboard mounting member 6 and the inner bottom wall of the housing 1, and the second gap 1b is respectively connected to the first gap 1a. The gap 1a is connected to the first sub-heat dissipation hole 67a, so that when the fan 72 is started, the external air can enter the interior of the housing 1 from the second vent 111, and then can not only enter the cavity of the mainboard mounting member 6 through the first gap 1a and the second sub-heat dissipation hole 67b in sequence, but also enter the cavity of the mainboard mounting member 6 through the first gap 1a and the third sub-heat dissipation hole 67c in sequence, and can also enter the cavity of the mainboard mounting member 6 through the first gap 1a, the second gap 1b and the first sub-heat dissipation hole 67a in sequence, and Under the action of the fan 72, the air flows through the electronic components 73, then flows out of the mainboard mounting member 6 from the first vent 66, and finally flows out of the housing 1 from the second vent 111 or re-enters the first gap 1a, so as to realize the circulation of air flow inside the housing 1, thereby achieving the effect of heat dissipation of the electronic components 73; alternatively, the external air enters from the second vent 111 and enters the cavity of the mainboard mounting member 6 through the first vent 66, and then is blown toward the electronic components 73 under the action of the fan 72 and flows through the electronic components 73, and then can not only be discharged to the outside of the mainboard mounting member 6 from the second sub-heat dissipation hole 67b and the third sub-heat dissipation hole 67c and enter the first gap 1a, but can also be discharged to the outside of the mainboard mounting member 6 from the first sub-heat dissipation hole 67a, enter the second gap 1b and the first gap 1a in turn, and finally flow out of the housing 1 from the second vent 111 or re-enter the cavity of the mainboard mounting member 6 through the first vent 66, so as to realize the circulation of air flow inside the housing 1, thereby achieving the effect of heat dissipation of the electronic components 73.

[0135] As discovered by the inventor, taking the energy storage device 100 in the discharge mode as an example, the magnitude of the current flowing through the circuit main board 7 will be described. Assume the first case: in the related art, when 3 batteries 3 are connected in series, the energy storage device 100 can usually achieve an electric quantity of 1 KWH. In this case, the voltage of the 3 batteries 3 connected in series input to the circuit main board 7 is (3.2 * 3) V, and the current input to the circuit main board 7 is 200 W / (3.2 * 3) V = 20 A; the second case: in the related art, when 5 batteries 3 are connected in series, the energy storage device 100 can usually achieve an electric quantity of 5 KWH. In this case, the voltage of the 5 batteries 3 connected in series input to the circuit main board 7 is (3.2 * 5) V, and the current input to the circuit main board 7 is 1000 W / (3.2 * 5) V = 50 A; while in the present application, a single battery 3 is adopted, the voltage of this battery 3 is 3.2 V, and the energy storage device 100 can achieve an electric quantity of 1 KWH. Then, the voltage of the battery 3 in the present application input to the circuit main board 7 is 3.2 V, and the current input to the circuit main board 7 is 200 W / 3.2 V = 60 A. It can be seen that the current flowing through the circuit main board 7 in the present application is greater than that in the related art, so the heat generated by the circuit main board 7 is higher than that in the above two cases of the related art.

[0136] In view of this, in the present application, a third gap 1c is provided between the partition 135 and the inner side wall of the housing 1, and at least one end of the bottom rib 134 is spaced from the inner side wall of the housing 1. Compared with the way that there is no third gap 1c between the partition 135 and the inner side wall of the housing 1, that is, compared with the way that the partition 135 is directly connected to the inner side wall of the housing 1, not only can the use of materials be reduced and the weight of the housing 1 be reduced, thereby reducing costs and achieving a lightweight design; at the same time, when the fan 72 is started for heat dissipation, the third gap 1c can also be used as a heat exchange space to increase the heat exchange space of the gas, which is beneficial to improving the heat dissipation effect. On this basis, at least one end of the bottom rib 134 is also spaced from the inner side wall of the housing 1. When the fan 72 is started for heat dissipation, the gas can be unobstructed by the end of the bottom rib 134 and can enter the third gap 1c without having to cross the end of the bottom rib 134, facilitating the flow of the gas, which is beneficial to further improving the heat dissipation effect.

[0137] Further, the partition plate 135 includes a first side surface 1351 facing away from the inner bottom wall and an inclined surface 1352 connected to the first side surface 1351. In the direction from the first side surface 1351 towards the inner bottom wall, the inclined surface 1352 is gradually inclined towards the bottom rib 134 from its connection with the first side surface 1351. With such a designed inclined surface 1352, when the fan 72 is operating, it can guide the gas to enter the second gap 1b through the first gap 1a, or enter the first gap 1a through the second gap 1b. Thus, during heat dissipation, it is beneficial to promote gas circulation and improve the heat dissipation efficiency.

[0138] In some embodiments, the electronic component 73 includes a first functional device 731 whose temperature is higher than or equal to 110 °C in the operating state. Wherein, the functional device can be but is not limited to at least one of a bidirectional buck-booster, a bidirectional isolator, and an AC-DC converter, and the temperature of the first functional device 731 can be but is not limited to 110 °C, 115.4 °C, 118.06 °C, 120.9 °C, 123.09 °C, 125.7 °C, 130.5 °C, 134.5 °C, 139.5 °C, etc. The air outlet of the fan 72 is arranged facing the first functional device 731. The energy storage device 100 further includes heat dissipation fins 7a, and the heat dissipation fins 7a are arranged on the side of the first functional device 731 facing away from the first clamping member 21, and the heat dissipation fins 7a extend along the axial direction of the fan 72. In this application, the air outlet of the fan 72 is facing the first functional device 731 with a relatively high temperature in the operating state, and heat dissipation fins 7a are arranged on the side of the first functional device 731 facing away from the first clamping member 21, which can quickly cool the first functional device 731 with a relatively high temperature in the operating state, avoid safety accidents, and improve the use safety; at the same time, the heat dissipation fins 7a are also arranged to extend along the axial direction of the fan 72. In this way, the heat dissipation fins 7a can effectively guide the gas flowing through the first functional device 731 (that is, the gas extracted or blown out by the fan 72), so that the gas can fully exchange heat with the first functional device 731, improve the heat dissipation effect of the first functional device 731, and have a better heat dissipation effect.

[0139] In some embodiments, the circumferential edge of the second sub-heat dissipation hole 67b projects onto the inner side wall of the housing 1 as a first projection ring, and the first functional device 731 projects onto the inner side wall of the housing 1 as a first projection, and at least part of the first projection is located within the first projection ring. In this way, the gas that exchanges heat with the first functional device 731 can be quickly discharged outside the main board mounting member 6, avoiding staying around the first functional device 731 for a long time, which may cause the first functional device 731 to be difficult to cool down quickly in a short time. In this way, it is beneficial to improve the heat dissipation effect of the fan 72 on the first functional device 731.

[0140] In some embodiments, such as Figure 17 and Fig.19As shown, a waterproof and breathable film 111a is provided at the second vent 111. In this way, while enabling the internal and external gas circulation of the housing 1 through the second vent 111 to achieve a heat dissipation effect, it can also play a waterproof role, preventing external liquid from entering the housing 1 through the second vent 111 and causing short circuits in the battery 3 and the circuit main board 7, thereby ensuring the use safety and battery performance of the energy storage device 100.

[0141] In some embodiments, please refer to Fig.13 、 Figure 17 and Fig.19 again. The energy storage device 100 further includes a heat insulation member 8, such as a mica board. The heat insulation member 8 is disposed between the circuit main board 7 and the first clamping member 21. In this way, a heat insulation effect can be achieved to reduce or avoid the heat generated by the battery 3 during thermal runaway from spreading to the circuit main board 7, thereby preventing the fire from spreading to the circuit main board 7 when the battery 3 catches fire. Exemplarily, the heat insulation member 8 can be a mica board or a metal plate with a heat insulation coating on its surface. By using the above heat insulation member 8, it can better isolate the heat spread from one battery 3 after thermal runaway to the circuit main board 7, with a better heat insulation effect. At the same time, the mica board can also prevent electric breakdown and prevent damage to the circuit main board 7. Among them, the heat insulation coating can be mainly composed of a thermal insulation material, which can be but is not limited to fiberglass, asbestos, rock wool, silicate, aerogel felt, vacuum board, etc., and has good heat insulation ability to prevent heat exchange between the battery 3 and the circuit main board 7.

[0142] Furthermore, a second through groove 81 is provided at the periphery of the heat insulation member 8, and the first clamping member 21 protrudes with a second bending member 215. Specifically, the first clamping body 211 protrudes with a second bending member 215. The second bending member 215 passes through the second through groove 81, and the second bending member 215 can be bent to abut against the heat insulation member 8, thereby realizing the installation and fixation of the heat insulation member 8 on the first clamping member 21. By using the above installation method, it is convenient to install and fix the heat insulation member 8.

[0143] In some embodiments, as Fig.19 and Figure 20 shown, the energy storage device 100 further includes a holding member 9. The holding member 9 is connected to the housing 1 so that when moving the energy storage device 100, the holding member 9 can be held to lift the energy storage device 100 to move the energy storage device 100, so that the movement of the energy storage device 100 is more convenient. And a first groove 112 is provided on the top surface of the housing 1. At least a part of the holding member 9 is received in the first groove 112, and a holding space is formed between the holding member 9 and the first groove 112 for the user's hand to extend into to hold the holding member 9. In the direction opposite to the depth direction of the first groove 112 (for example Fig.19In the upward direction), the surface of the gripping member 9 facing away from the housing 1 is lower than the top surface of the housing 1 or flush with the top surface of the housing 1, so that when the housing 1 is placed on a placement plane such as a desktop, a table, or the ground, the housing 1 can be turned upside down, that is, the top surface of the housing 1 can be placed on the placement plane, so that the energy storage device 100 can be turned upside down on the placement plane.

[0144] Preferably, the surface of the gripping piece 9 facing away from the shell 1 is lower than the top surface of the shell 1. Compared with the manner in which the surface of the gripping piece 9 facing away from the shell 1 is flush with the top surface of the shell 1, it is difficult to keep the surface of the gripping piece 9 facing away from the shell 1 and the top surface of the shell 1 absolutely flush, that is, there is easily a height difference between the surface of the gripping piece 9 facing away from the shell 1 and the top surface of the shell 1, which will affect the stability of the shell 1 when it is inverted on the placement plane. Therefore, the manner in which the surface of the gripping piece 9 facing away from the shell 1 is flush with the top surface of the shell 1 can improve the stability of the shell 1 when it is inverted on the placement plane.

[0145] It should be noted that, since the clamping member 2, battery 3 and adjusting member 4 in the present application are all located inside the outer shell 1, the outer shell 1 generally includes at least two shells. For example, the outer shell 1 includes a top shell 11 and a bottom shell 13. The top shell 11 and the bottom shell 13 are connected, and the two form a receiving space to accommodate the clamping member 2, battery 3 and adjusting member 4. At the same time, since the adjusting member 4 needs to be adjusted during assembly of the present application to make the clamping space 23 adapt to the size of the battery 3, the battery 3 and the clamping member 2 are usually assembled together first, and then the bottom of the battery 3 and the clamping member 2 as a whole are inserted into the internal space of the bottom shell 13 from the opening of the bottom shell 13, and finally the top shell 11 is assembled. This installation process is usually understood as the normal installation of the battery 3. However, since the depth of the internal space of the bottom shell 13 is usually much deeper than the depth of the internal space of the top shell 11 in the height direction of the battery 3, when the bottom of the battery 3 and the clamping part 2 are first installed into the internal space of the bottom shell 13 from the opening of the bottom shell 13, when the battery 3 and the clamping part 2 are loosened, there is still a certain distance between the bottom of the battery 3 and the clamping part 2 and the inner bottom surface of the bottom shell 13, so that the battery 3 and the clamping part 2 will collide with the bottom shell 13, which may easily cause certain damage to the battery 3, the clamping part 2 and the bottom shell 13. Therefore, during assembly in this application, the battery 3 and the clamping part 2 are usually assembled together first, and then the top of the battery 3 and the clamping part 2 are connected to the top shell 11, and finally the bottom shell 13 is placed on the outer periphery of the battery 3 and the clamping part 2, and the bottom shell 13 is connected to the top shell 11. This installation process is usually understood as the inverted installation of the battery 3. When inverting, it is usually necessary to place the top surface of the top shell 11 (that is, the top surface of the outer shell 1) on a placement plane. Therefore, a first groove 112 is provided on the top surface of the outer shell 1 to accommodate part of the grip 9 or the entire grip 9, so that the top surface of the grip 9 facing away from the outer shell 1 can be lower than or flush with the top surface of the outer shell 1, so that the outer shell 1 can be inverted and can be placed flat on the placement plane stably, so that when the battery 3 and the clamping part 2 are assembled as a whole to the top shell 11, it can be relatively smooth, which facilitates the assembly of the battery 3 and the clamping part 2 as a whole to the top shell 11.

[0146] At the same time, when holding the grip 9 to lift the energy storage device 100, since the circuit main board 7 is located on one side of the battery 3 and the weight of the battery 3 is much heavier than the circuit main board 7, there is a large difference in weight between the two sides. Therefore, when the energy storage device 100 is carried while walking, it will not rub against the user's legs, thereby avoiding affecting walking.

[0147] When the grip 9 is disposed on the top of the housing 1, the second vent 111 is preferably disposed on the side wall of the housing 1. In this way, when the grip 9 is held to lift the energy storage device 100, the hot gas discharged through the second vent 111 can be prevented from contacting the user's hands, thereby preventing the user's hands from being scalded or wet.

[0148] In some embodiments, the surface of the gripping member 9 facing away from the housing 1 is flat, so as to ensure that the energy storage device 100 can be placed more stably and flatly on a placement surface when it is turned upside down.

[0149] In some embodiments, an annular protrusion 113 is provided on the top surface of the shell 1, and the annular protrusion 113 surrounds the outer periphery of the first groove 112, and in the protruding direction of the annular protrusion 113, the surface of the grip 9 facing away from the shell 1 is lower than the surface of the annular protrusion 113 facing away from the shell 1, so that when the shell 1 is inverted, the shell 1 can be placed stably and flatly on the placement plane; and compared with the manner in which the surface of the grip 9 facing away from the shell 1 is flush with the surface of the annular protrusion 113 facing away from the shell 1, since the surface of the grip 9 facing away from the shell 1 and the surface of the annular protrusion 113 facing away from the shell 1 are difficult to maintain absolute flushness, that is, there is easily a height difference between the surface of the grip 9 facing away from the shell 1 and the surface of the annular protrusion 113 facing away from the shell 1, which will affect the stability of the shell 1 when it is inverted on the placement plane, so the manner in which the surface of the grip 9 facing away from the shell 1 is lower than the top surface of the shell 1 can improve the stability of the shell 1 when it is inverted on the placement plane.

[0150] In one exemplary embodiment, the annular protrusion 113 may be located at the edge of the top surface of the shell 1, in which case the outer peripheral surface of the annular protrusion 113 is roughly flush with the outer side surface of the shell 1; in another exemplary embodiment, the annular protrusion 113 may be located between the first groove 112 and the outer side surface of the shell 1.

[0151] In some embodiments, such as Fig.19 and Figure 20 As shown, the gripping member 9 is moved in a first direction (e.g., along Fig.19 The two ends of the first groove 112 (in the left and right directions in the left and right directions) are respectively connected to the housing 1. The first groove 112 is an arc-shaped groove extending along the first direction, and the first groove 112 has a groove wall surface 1121 arranged toward the grip 9. The groove wall surface 1121 is a cylindrical surface arranged around an axis parallel to the first direction, and the cross-sectional profile of the groove wall surface 1121 cut by a plane perpendicular to the first direction is an arc. In this way, when the user's hand is inserted into the grip space to grasp the grip 9, the groove wall surface 1121 of the first groove 112 is prevented from blocking the user's hand and making it inconvenient to grasp the grip 9, thereby facilitating the user's hand to enter the grip space and grasp the grip 9.

[0152] In some embodiments, the holding member 9 has a peripheral side surface 91 facing the groove wall surface 1121. The peripheral side surface 91 is a cylindrical surface arranged around an axis parallel to the first direction, and the peripheral side surface 91 is arranged parallel to the groove wall surface 1121. In this way, it is not only convenient for the user's hand to extend into the holding space to hold the holding member 9, but also when the user's hand holds the holding member 9, the holding member 9 can adapt to the bent shape of the user's hand and fit well with the user's hand, so as to facilitate the user's hand to hold the holding member 9 and improve the comfort of the user holding the holding member 9.

[0153] In some embodiments, such as Figure 20 and Figure 21 As shown, the surface of the holding member 9 facing the groove wall surface 1121 is provided with a plurality of first ribs 92 and a plurality of second ribs 93. The plurality of first ribs 92 are arranged at intervals along the first direction, the plurality of second ribs 93 are arranged at intervals along the second direction, and each second rib 93 intersects with the plurality of first ribs 92; wherein, the surface of the plurality of first ribs 92 facing the groove wall surface 1121 forms the peripheral side surface 91, and / or, the surface of the plurality of second ribs 93 facing the groove wall surface 1121 forms the peripheral side surface 91, wherein the second direction is perpendicular to the first direction, and the second direction is also perpendicular to the depth direction of the first groove 112. By forming a plurality of first ribs 92 arranged along the first direction and a plurality of second ribs 93 arranged along the second direction on the surface of the holding member 9 facing the groove wall surface 1121, it can not only strengthen the structural strength of the holding member 9, but also increase the friction between the user's hand and the holding member 9 to play an anti-slip role, so as to avoid the situation that the holding member 9 accidentally detaches from the user's hand and causes the energy storage device 100 to fall after the user holds the holding member 9 to lift the energy storage device 100; at the same time, it is also convenient for demolding.

[0154] In some embodiments, the surface of the holding member 9 facing the groove wall surface 1121 is provided with a second threaded connection hole 941, and the outer shell 1 is also provided with a through hole 117. Fasteners such as bolts and screws are sequentially passed through the through hole 117 and the second threaded connection hole 941, and the fastener is also threadedly connected to the second threaded connection hole 941 to realize the installation and fixation between the holding member 9 and the outer shell 1. In this way, the connection between the holding member 9 and the outer shell 1 can be relatively firm; and the installation is convenient, and it is also convenient to disassemble, with strong practicability and convenient operation. At the same time, since the nut of the fastener is located inside the outer shell 1, there is no connection hole on the surface of the holding member 9 exposed outside the first groove 112, so that liquid such as rainwater can be prevented from entering the inside of the outer shell 1 from the installation hole, and the waterproof performance of the outer shell 1 can be improved.

[0155] Exemplarily, an installation post 94 protrudes from the surface of the holding member 9 facing the groove wall surface 1121. The end surface of the installation post 94 facing the groove wall surface 1121 is provided with the aforementioned second threaded connection hole 941. In this way, it is not necessary to thicken the entire thickness of the holding member 9 in the depth direction of the first groove 112. Instead, it is only necessary to increase the thickness of the installation post 94 in the depth direction of the first groove 112. By locally thickening, the depth of the second threaded connection hole 941 can be increased to increase the connection area between the second threaded connection hole 941 and the fastener, further improving the connection stability between the holding member 9 and the housing 1. At the same time, the weight of the holding member 9 can also be made relatively light, which is beneficial to the thin and light design of the holding member 9.

[0156] Further, installation posts 94 are provided at both ends of the holding member 9 in the first direction, and a plurality of installation posts 94 are provided at each end of the holding member 9 in the first direction, such as two installation posts 94, three installation posts 94, or four installation posts 94, etc. In this way, the holding member 9 can be installed and fixed to the housing through a plurality of fasteners, thereby further improving the connection stability between the holding member 9 and the housing 1.

[0157] In some embodiments, as Figure 17 and Figure 22 shown, a power plug 114 is provided on the side wall of the housing 1 arranged in the first direction. The power plug 114 can be plugged with a power cord, so that the battery 3 can be charged by connecting to an external power source through the power cord, and / or, a device to be charged can be charged by connecting to the power cord. And the projection of the holding member 9 on the side wall of the housing 1 arranged in the first direction is a second projection, and the second projection at least partially coincides with the power plug 114 in the depth direction of the first groove 112. In this way, when plugging and unplugging the power cord, one hand of the user can hold the holding member 9, and the other hand can hold the power cord to insert the power cord into the power connector or pull out the power cord from the power plug 114. At this time, the force exerted by the user's hand holding the holding member 9 can counteract the force of plugging and unplugging the power cord, which is convenient for plugging and unplugging the power cord.

[0158] In some embodiments, the power plug 114 is located at the top of the housing 1, such that the power plug 114 can be disposed close to the holding member 9, and / or, in the depth direction of the first groove 112, the distance between the power plug 114 and the top surface of the housing 1 is d1, and the distance between the top surface and the bottom surface of the housing 1 is d2, where d1 / d2 = 1 / 25 - 4 / 25. For example, d1 / d2 = 1 / 25, 3 / 50, 2 / 25, 1 / 10, 3 / 25, 7 / 50 or 4 / 25, etc., so that the distance between the holding member 9 and the power plug 114 can be set to be very close. With the above design, compared with disposing the power plug 114 at the bottom of the housing 1, the distance between the power plug 114 and the holding member 9 is closer. When plugging and unplugging the power cord, it is easier to apply force to pull out the power plug 114 from the power socket, or insert the power cord into the power plug 114.

[0159] Exemplarily, the power plug 114 may include three sub - power plugs. One sub - power plug is used to implement the function of charging the device to be charged by the energy storage device 100; the remaining two sub - power plugs are used to implement the function of charging the energy storage device 100. Among them, one of the remaining two sub - power plugs is a mains charging plug, and the other is a photovoltaic charging plug. This facilitates the charging and discharging of the energy storage device 100.

[0160] In some embodiments, please refer back to Fig.19 and Figure 20 , a second functional device 115 protrudes from the top surface of the housing 1. The second functional device 115 can be electrically connected to the circuit board 7, and the second functional device 115 is located in the annular protrusion 113. And in the protruding direction of the annular protrusion 113 (such as Fig.19 the upward direction in), the surface of the second functional device 115 facing away from the housing 1 is lower than the surface of the annular protrusion 113 facing away from the housing 1. In this way, when the housing 1 is placed upside down on a placement plane, it can be avoided that the second functional device 115 contacts the placement plane or relative sliding occurs between the two, thereby reducing the wear of the second functional device 115.

[0161] Optionally, the second functional device 115 may be, but is not limited to, at least one of an indicator light and a power button. When the second functional device 115 is an indicator light, there may be multiple indicator lights, and the multiple indicator lights can be used to indicate the current power level and charging status of the energy storage device 100. For example, if there are four indicator lights, and when the energy storage device 100 is not being charged, all four indicator lights are on, then the energy storage device 100 is approximately fully charged. Similarly, the fewer indicator lights that are on, the less power the energy storage device 100 has, until all four indicator lights are off, at which point the power of the energy storage device 100 is zero. When charging the energy storage device 100, assuming that at the beginning, the four indicator lights flash in sequence, when a certain power level is reached, one indicator light is constantly on, and the remaining three indicator lights flash in sequence until all four indicator lights are constantly on, indicating that the energy storage device 100 is fully charged. When the second functional device 115 is a power button, pressing the power button can control the circuit board 7 to implement a corresponding function. For example, pressing the power button can control the circuit board 7 to turn the energy storage device 100 on and off. By making the surface of the second functional device 115 facing away from the housing 1 lower than the surface of the annular protrusion 113 facing away from the housing 1, the power button can be prevented from being continuously squeezed when the housing 1 is inverted onto a flat surface, thereby preventing the energy storage device 100 from constantly switching between on and off. This can ensure the service life of the energy storage device 100.

[0162] In actual production, multiple energy storage devices 100 are produced in batches, or in actual purchase, users may purchase multiple energy storage devices 100 as backup batteries 3. To save space, multiple energy storage devices 100 are usually stacked vertically.

[0163] In order to improve the stability of two adjacent stacked energy storage devices 100, in some embodiments, such as Fig.19 and Figure 23a As shown, a limiting protrusion 136 is convexly provided on the bottom surface of the shell 1, wherein the projection of the annular protrusion 113 on the top surface of the shell 1 on the bottom surface of the shell 1 is a second projection ring, and the projection of the limiting protrusion 136 on the bottom surface of the shell 1 is a third projection, which is located within the second projection ring, and the outer contour of the third projection abuts the inner contour of the second projection ring. In this way, when multiple energy storage devices 100 are stacked in the vertical direction, for any two adjacent energy storage devices 100, the limiting protrusion 136 of the energy storage device 100 located above can cooperate and engage with the annular protrusion 113 of the energy storage device 100 located below, so that any two adjacent stacked energy storage devices 100 can be stably stacked together, thereby preventing the energy storage device 100 located above from falling.

[0164] Optionally, there may be a plurality of limiting protrusions 136. The plurality of limiting protrusions 136 are arranged at intervals along the circumferential direction of the housing 1, and the third projection formed by each limiting protrusion 136 is located within the second projection ring, and the third projection formed by each limiting protrusion 136 abuts against the inner contour of the second projection, which can further improve the stability of two adjacent energy storage devices 100 stacked together. Exemplarily, in the present application, the shape of the housing 1 is a cuboid, then its top surface and bottom surface are both rectangular surfaces, the annular protrusion 113 is a rectangular ring structure located at the edge of the top surface, and there are four limiting protrusions 136. One limiting protrusion 136 is located at a corner of the bottom surface, and the four limiting protrusions 136 are all engaged with the annular protrusion 113. Further, the limiting protrusion 136 may be an L-shaped structure, including a first part and a second part connected at an angle. Among them, the first part extends along the short side of the bottom surface, and the second part extends along the long side of the bottom surface, so as to increase the contact area between the annular protrusion 113 and the limiting protrusion 136, and further facilitate improving the stability of two adjacent stacked energy storage devices 100.

[0165] In some alternative embodiments, the housing 1 may include a top shell 11 and a bottom shell 13. The top shell 11 and the bottom shell 13 are connected. The first clamping member 21 and the second clamping member 22 are disposed within the bottom shell 13, and the first clamping member 21 and the second clamping member 22 are respectively connected to the top shell 11. The adjusting member 4 is located within the bottom shell 13. Setting the housing 1 as a housing structure including a top shell 11 and a bottom shell 13 facilitates the assembly of components such as the battery 3, the first clamping member 21, the second clamping member 22, and the adjusting member 4 into the interior of the housing 1. Moreover, since the housing 1 only includes the top shell 11 and the bottom shell 13, the number of components is relatively small, the structure is relatively simple, which is convenient for installation, and at the same time, the cost can be reduced.

[0166] In some other alternative embodiments, as Figure 2 and Figure 23b shown, the housing 1 may include a top shell 11, an intermediate housing 12, and a bottom shell 13. The intermediate housing 12 is located between the top shell 11 and the bottom shell 13, and the intermediate housing 12 is respectively connected to the top shell 11 and the bottom shell 13. The first clamping member 21 and the second clamping member 22 are disposed within the bottom shell 13, and the first clamping member 21 and the second clamping member 22 are respectively connected to the intermediate housing 12. The adjusting member 4 is located within the bottom shell 13. Compared with the manner in which the housing 1 includes a top shell 11 and a bottom shell 13, an additional intermediate housing 12 connected to the top shell 11 is added, and components such as the first clamping member 21, the second clamping member 22, and the bottom shell 13 are respectively connected to the intermediate housing 12, so that the intermediate housing 12 can bear a part of the force of the top shell 11, increasing the structural strength of the top shell 11, improving the bearing capacity of the top shell 11 when lifting the energy storage device 100, and extending the service life of the top shell 11.

[0167] In some embodiments, in combination with Figure 8 , Fig. 9 , Fig.10 , Figure 23c , Figure 27 and Fig.28 , the first clamping member 21 further includes a first mounting flange 216 connected to the first clamping body 211. The first mounting flange 216 is provided with a first mounting hole 2161. The intermediate housing 12 is further provided with a second mounting hole 128, and the second mounting hole 128 is a threaded hole. First fasteners such as bolts and screws are sequentially passed through the first mounting hole 2161 and the second mounting hole 128, and the first fastener is also threadedly connected to the second mounting hole 128 to achieve the installation and fixation between the first clamping member 21 and the intermediate housing 12. Similarly, the second clamping member 22 further includes a second mounting flange 223 connected to the second clamping body 221. The second mounting flange 223 is provided with a third mounting hole 2231. The intermediate housing 12 is further provided with a fourth mounting hole 129, and the fourth mounting hole 129 is a threaded hole. Second fasteners such as bolts and screws are sequentially passed through the third mounting hole 2231 and the fourth mounting hole 129, and the second fastener is also threadedly connected to the fourth mounting hole 129 to achieve the installation and fixation between the second clamping member 22 and the intermediate housing 12.

[0168] The first clamping member 21 and the second clamping member 22 are respectively threadedly connected to the intermediate housing 12 through fasteners such as screws or bolts, which can make the connection between the clamping member 2 and the intermediate housing 12 relatively firm, so as to ensure that the intermediate housing 12 can share a part of the acting force from the clamping member 2 and the battery 3, improve the load-bearing capacity of the intermediate housing 12; and the installation is convenient, and it is also easy to disassemble, with strong practicability and convenient operation.

[0169] Exemplarily, the first mounting flange 216 is provided with a plurality of first mounting holes 2161. Correspondingly, the intermediate housing 12 is provided with a plurality of second mounting holes 128. The projection ring of the circumferential edge of a second mounting hole 128 on the first mounting flange 216 coincides with the circumferential edge of a first mounting hole 2161. A first fastener is sequentially passed through a first mounting hole 2161 and a second mounting hole 128, and a first fastener is threadedly connected to a second mounting hole 128. In this way, the first clamping member 21 can be installed and fixed to the intermediate housing 12 through a plurality of first fasteners, thereby further improving the connection stability between the first clamping member 21 and the intermediate housing 12.

[0170] Similarly, the second mounting flange 223 is provided with a plurality of third mounting holes 2231, and correspondingly, the intermediate shell 12 is provided with a plurality of fourth mounting holes 129, the circumferential edge of a fourth mounting hole 129 coincides with the projection ring on the second mounting flange 223 and the circumferential edge of a third mounting hole 2231, a second fastener is sequentially passed through a third mounting hole 2231 and a fourth mounting hole 129, and a second fastener is threadedly connected to a fourth mounting hole 129, so that the second clamping component 22 can be installed and fixed to the intermediate shell 12 through the plurality of second fasteners, thereby further improving the connection stability of the second clamping component 22 and the intermediate shell 12.

[0171] In some embodiments, combined Figures 23a to 25 As shown, the intermediate shell 12 is embedded in the top shell 11, and a stop protrusion 121 is convexly provided on the outer circumference of the intermediate shell 12. The stop protrusion 121 is arranged around the circumference of the intermediate shell 12, and the stop protrusion 121 has a first stop surface 1211 arranged toward the top shell 11. The first stop surface 1211 abuts against the end surface of the top shell 11. It can be understood that Figure 23a The state shown can be understood as the state where the housing 1 is placed upside down on the placement plane. Figure 23b The state shown can be understood as the state in which the housing 1 is placed on a placement plane. Usually, when the housing 1 is placed on a placement plane, the housing 1 is placed on the placement plane, that is, the bottom surface of the bottom shell 13 is in contact with the placement plane, so the liquid on the housing generally flows from top to bottom. For example, on a rainy day, when rain falls and drips onto the housing, the rainwater located in the top shell usually flows from top to bottom under the action of gravity. Even if the rainwater flows into the gap between the top shell 11 and the first stop surface 1211, because the intermediate shell 12 is embedded in the top shell 11, the part of the intermediate shell 12 located in the top shell 11 is equivalent to forming an upward barrier. Under the action of gravity, the rainwater cannot flow upward along the part of the intermediate shell 12 embedded in the top shell 11, thereby achieving a waterproof design. It can be seen that by protruding a stop protrusion 121 on the outer peripheral surface of the intermediate shell 12 and embedding the intermediate shell 12 in the top shell 11, the first stop surface 1211 of the stop protrusion 121 abuts against the end surface of the top shell 11, thereby realizing the waterproof design of the outer shell 1.

[0172] Exemplarily, in a direction perpendicular to the first abutting surface 1211, the length of the portion of the intermediate housing 12 embedded in the top housing 11 is 0.3 cm - 1.5 cm, such as 0.3 cm, 0.4 cm, 0.5 cm, 0.6 cm, 0.65 cm, 0.7 cm, 0.75 cm, 0.8 cm, 0.85 cm, 0.9 cm, 1.0 cm, 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm or 1.5 cm, etc. By controlling the length of the portion of the intermediate housing 12 embedded in the top housing 11 within the above range, it is avoided that the length of the portion of the intermediate housing 12 embedded in the top housing 11 is too short, so as to ensure that the portion of the intermediate housing 12 embedded in the top housing 11 can play a waterproof effect of blocking rainwater.

[0173] As an alternative embodiment, as Figure 24a-Figure 24c shown, the bottom housing 13 is embedded in the abutting protrusion 121 and / or the intermediate housing 12, that is, the bottom housing 13 can be only embedded inside the abutting protrusion 121 and does not extend into the intermediate housing 12 (as Figure 24a shown), or can be only embedded inside the intermediate housing 12 (as Figure 24b shown), or the bottom housing 13 can be partially located inside the intermediate housing 12 and partially located inside the abutting protrusion 121 (as Figure 24c shown), wherein the abutting protrusion 121 further has a second abutting surface 1212 disposed towards the bottom surface of the bottom housing 13. As described above, usually when the energy storage device 100 is placed on the placement plane, the energy storage device 100 is placed upright on the placement plane, that is, the bottom surface of the bottom housing 13 is in contact with the placement plane, so the liquid on the outer shell 1 generally flows from top to bottom. For example, on a rainy day, when rainwater falls and drips onto the outer shell, the rainwater on the top housing usually flows from top to bottom under the action of gravity. Even if the rainwater flows into the gap between the second abutting surface 1212 and the bottom housing 13, since the bottom housing 13 is embedded in the intermediate housing 12 and / or the abutting protrusion 121, the portion of the bottom housing 13 located in the intermediate housing 12 and / or the abutting protrusion 121 forms an upward block, and the rainwater cannot flow upward along the portion of the bottom housing 13 embedded in the intermediate housing 12 and / or the abutting protrusion 121 under the action of gravity, thereby realizing the waterproof design.

[0174] As another alternative embodiment, as Fig.25As shown, the stopping protrusion 121 further has a second stopping surface 1212 disposed towards the bottom surface of the bottom case 13. The intermediate case 12 is embedded in the bottom case 13, the stopping protrusion 121 is located outside the bottom case 13, and the second stopping surface 1212 abuts against the end surface of the bottom case 13. The energy storage device further includes a seal 9a. The seal 9a is disposed on the outer peripheral surface of the intermediate case 12 and is arranged to surround the intermediate case 12 along the circumferential direction. The seal 9a is in sealing abutment with the inner side wall of the bottom case 13. Thus, the inner side wall of the bottom case 13 will squeeze the seal 9a. Therefore, the seal 9a will deform under the action of the squeezing force to block the connection gap between the inner side wall of the bottom case 13 and the outer peripheral surface of the intermediate case 12, thereby playing a role in sealing and waterproofing and improving the waterproof performance of the housing 1.

[0175] Optionally, the seal 9a is elastic. For example, the seal 9a can be a sealing ring such as a silica gel ring, a rubber ring, a plastic ring or a foam ring, or a sealant, etc.

[0176] In some embodiments, as Fig.26 shown, one end of the intermediate case 12 is embedded in the top case 11, and the other end of the intermediate case 12 is embedded in the bottom case 13. The stopping protrusion 121 is located between the top case 11 and the bottom case 13. In the protruding direction (such as the x0 - x1 direction in Fig.26 ) where the stopping protrusion 121 protrudes relative to the outer peripheral surface of the intermediate case 12, the outer peripheral surfaces of the top case 11 and the bottom case 13 are flush, and the outer peripheral surface of the intermediate case 12 is lower than the outer peripheral surface of the top case 11.

[0177] By providing a stopping protrusion 121 on the outer peripheral surface of the intermediate case 12, steps can be formed on both sides of the intermediate case 12, so that the steps on both sides of the intermediate case 12 can be used to cooperate with the top case 11 and the bottom case 13 for connection respectively. Thus, the path for external liquids such as raindrops to enter the housing 1 can be extended, thereby improving the waterproof performance of the housing 1. Moreover, in the protruding direction where the stopping protrusion 121 protrudes relative to the outer peripheral surface of the intermediate case 12, the outer peripheral surfaces of the top case 11 and the bottom case 13 are flush, and the outer peripheral surface of the intermediate case 12 is lower than the outer peripheral surface of the top case 11. Even when the energy storage device 100 in the present application is placed outdoors and it rains, the rainwater will flow from the outer peripheral surface of the top case 11 towards the bottom case 13. When the rainwater flows to the edge of the top case 11, the rainwater will directly drip onto the outer peripheral surface of the bottom case 13 under the action of its gravity and continue to flow along the outer peripheral surface of the bottom case 13, rather than seeping into the interior of the housing 1 from the connection between the top case 11 and the intermediate case 12, and the connection between the bottom case 13 and the intermediate case 12. Thus, the waterproof performance of the housing 1 can be further improved.

[0178] In some embodiments, as Figures 26 to 28As shown, a second step structure 122 is provided at one end of the intermediate shell 12 embedded in the bottom shell 13. The second step structure 122 includes a first step surface 1221 and a second step surface 1222 connected at an angle. The orientation of the first step surface 1221 is the same as the orientation of the second stop surface 1212. The orientation of the second step surface 1222 is the same as the orientation of the outer peripheral surface of the intermediate shell 12. The second step surface 1222 is protruding with a plurality of clamping protrusions 1223 arranged at intervals along the circumference of the intermediate shell 12. The plurality of clamping protrusions 1223 are all spaced apart from the first step surface 1221, and the seal 9a is embedded between the first step surface 1221 and the clamping protrusion 1223. The second step structure 122 is set, and a clamping protrusion 1223 is protruded on the second step surface 1222, so that the clamping protrusion 1223 cooperates with the first step surface 1221 and the second step surface 1222 to define the installation position of the seal 9a, which not only plays a role in positioning and limiting the installation of the seal 9a, but also facilitates the installation of the seal 9a. At the same time, when the seal 9a is deformed by the extrusion of the bottom shell 13 and the intermediate shell 12, the first step surface 1221 and the clamping protrusion 1223 have a restraining effect on the deformation of the seal 9a, avoiding the seal 9a from undergoing a large deformation along the direction pointing from the first step surface 1221 to the clamping protrusion 1223, but ensuring that the seal 9a is mainly deformed in the direction perpendicular to the second step surface 1222, so as to ensure that the seal 9a can be more closely attached to the inner wall of the bottom shell 13, thereby achieving a better sealing effect.

[0179] In addition, the provision of the second step structure 122 can further extend the path for external liquids such as raindrops to enter the housing 1, thereby improving the waterproof performance of the housing 1.

[0180] In some embodiments, combined Figures 27 to 29 As shown, the first abutment surface 1211 is provided with a second groove 1211a. For example, the second groove 1211a can be an annular groove extending along the circumference of the intermediate housing 12. The provision of the second groove 1211a ensures that even if rainwater flows into the gap between the top shell 11 and the first abutment surface 1211, the rainwater will flow into the second groove 1211a under the action of gravity, so that the rainwater can be temporarily stored in the second groove 1211a, thereby further improving the waterproof effect of the housing 1.

[0181] In some embodiments, a second reinforcing rib 129a is protruding from the outer circumference of the intermediate housing 12. The second reinforcing rib 129a is connected to the first stop surface 1211 and is located within the top housing 11. The provision of the second reinforcing rib 129a helps to enhance the structural strength of the intermediate housing 12 and improve the load-bearing capacity of the intermediate housing 12.

[0182] Exemplarily, a part of the second reinforcing rib 129a is located in the second groove 1211a, so that the second groove 1211a can be divided into at least two relatively independent sub-grooves, so as to prevent rainwater flowing into the second groove 1211a from different positions from being in different sub-grooves, thereby preventing rainwater flowing into the second groove 1211a from different positions from flowing and spreading randomly in the second groove. In this way, the waterproof effect of the housing can be improved to a certain extent.

[0183] In some embodiments, such as Figure 29 and Fig.30 As shown, a bump 137 is convexly provided on the inner side wall of the bottom shell 13. The bump 137 is provided with a socket groove 1371. The other side of the middle shell 12 is provided with a socket block 123. The socket block 123 is inserted into the socket groove 1371 to realize the connection between the middle shell 12 and the bottom shell 13, so that the assembly and installation between the middle shell 12 and the bottom shell 13 can be facilitated.

[0184] Furthermore, the socket block 123 is arranged on the second step surface 1222. The socket block 123 is arranged at an interval from the first step surface 1221, and the socket block 123 is located on one side of the clamping protrusion 1223 in the circumferential direction of the middle shell 12. The socket block 123 abuts against the seal 9a. In this way, in addition to using the cooperation between the first step surface 1221 and the clamping protrusion 1223 to restrict the deformation of the seal 9a in the direction from the first step surface 1221 to the clamping protrusion 1223, the cooperation between the socket block 123 and the first step surface 1221 can also be used to restrict the deformation of the seal 9a in the direction from the first step surface 1221 to the clamping protrusion 1223, so as to ensure that the seal 9a mainly deforms in the direction perpendicular to the second step surface 1222, so as to ensure that the seal 9a can fit more tightly against the inner side wall of the bottom shell 13, and thus the sealing effect can be better.

[0185] In some embodiments, in combination with Figure 2 、 Figure 23c 、 Figures 27 to 29As shown, the first mounting flange 216 and the second mounting flange 223 are both located on the small side of the battery 3, that is, the first mounting flange 216 and the second mounting flange 223 are both located on the side surface of the battery 3 in its length direction. And the plug-in block 123 includes a first plug-in block 123a and a second plug-in block 123b. The first plug-in block 123a is located on the large side of the battery 3, and the second plug-in block 123b is located on the small side of the battery 3. That is to say, the first plug-in block 123a is located on the side surface of the battery 3 in its width direction, and the second plug-in block 123b is located on the side surface of the battery 3 in its length direction. That is, the second plug-in block 123b and the first mounting flange 216 and the second mounting flange 223 are located on the same side of the battery 3. And a plurality of first plug-in blocks 123a spaced along the width direction of the battery are arranged on the side part of the middle housing 12 in the width direction of the battery 3, while a second plug-in block 123b is arranged on the side part of the middle housing 12 in the length direction of the battery 3. That is, there are more plug-in blocks 123 arranged on the large side than on the small side, so that the load bearing of the middle housing 12 from the bottom case 13 is more uniform. And the second plug-in block 123b is arranged adjacent to the first mounting flange 216, so that the connection position between the bottom case 13 and the middle housing 12 is relatively close to the connection position between the first clamping member 21 and the middle housing 12. Thus, the load bearing of the middle housing 12 from the bottom case 13 can match the load bearing of the middle housing 12 from the whole of the battery 3 and the clamping member 2, which is conducive to improving the load bearing capacity of the middle housing 12.

[0186] Exemplarily, the second plugging block 123b includes a first plugging plate 123b1 and a second plugging plate 123b2. The first plugging plate 123b1 extends along the length direction of the battery 3. The second plugging plate 123b2 is angularly connected to the first plugging plate 123b1 and extends along the width direction of the battery 3. The second plugging plate 123b2 is spaced from the outer peripheral surface of the first clamping member 21, so that a screwdriver can extend into the gap between the second plugging plate 123b2 and the outer peripheral surface of the first clamping member 21 to tighten or loosen the first fastener, thereby realizing the installation, fixation or disassembly of the first clamping member 21 and the middle housing 12. Wherein, the second plugging plate 123b2 is plugged into the plugging groove 1371 on the bump 137, and the first plugging plate 123b1 is located outside the plugging groove 1371. Moreover, the bump for forming the plugging groove 1371 plugged with the second plugging plate 123b2 is provided with openings communicating with the plugging groove 1371 on both side surfaces in the width direction of the battery 3. In other words, the plugging groove 1371 plugged with the second plugging plate 123b2 has no groove side wall in the width direction of the battery 3, which can allow a certain assembly error when the middle housing 12 and the bottom shell 13 are installed. That is, after ensuring that each first plugging block 123a is inserted into the plugging groove 1371 on the bottom shell 13, in the case of an error assembly, the second plugging block 123b will not fail to be plugged in, but it is ensured that the second plugging plate 123b2 can be inserted into the plugging groove 1371, so as to ensure that the middle housing 12 and the bottom shell 13 can be assembled together smoothly.

[0187] In some embodiments, such as Figure 29 and Figure 31 shown, one of the middle housing 12 and the top shell 11 is provided with an anti-fooling protrusion 116, and the other of the middle housing 12 and the top shell 11 is provided with an anti-fooling groove 124. The anti-fooling protrusion 116 and the anti-fooling groove 124 are cooperatively clamped, so that the middle housing 12 and the top shell 11 can only be installed in a specific direction, which has an anti-fooling effect on the installation between the middle housing 12 and the top shell 11 and avoids being installed reversely.

[0188] In some embodiments, in combination with Figure 2 、 Figure 23a 、 Figure 29As shown, the battery 3 is provided with an explosion-proof valve 31. The side wall of the top shell 11 is provided with a second ventilation opening 111, and a waterproof breathable film 111a is provided at the second ventilation opening 111. The intermediate shell 12 is provided with a ventilation hole 125 communicating with the second ventilation opening 111. The ventilation hole 125 is used to discharge the gas discharged through the explosion-proof valve 31 to the second ventilation opening 111 when the explosion-proof valve 31 explodes. That is, when the battery 3 undergoes thermal runaway, the explosion-proof valve 31 will explode to discharge the high-temperature and high-pressure gas generated by the battery 3 to the ventilation hole 125, and the high-temperature and high-pressure gas discharged to the ventilation hole 125 will be discharged to the outside of the housing 1 through the waterproof breathable film 111a at the second ventilation opening 111, so as to prevent the energy storage device 100 from exploding and improve the use safety of the energy storage device 100; at the same time, since the waterproof breathable film 111a is provided at the second ventilation opening 111, it can play a waterproof role while not affecting the explosion-proof performance of the explosion-proof valve 31, and prevent external liquid from entering the housing 1 through the second ventilation opening 111, resulting in a short circuit of the battery 3 and the circuit main board 7, thereby ensuring the use safety and battery performance of the energy storage device 100.

[0189] It should be known that when the explosion-proof valve 31 explodes, the explosion-proof valve 31 will open in a direction away from the battery 3. The ventilation hole 125 is provided on the intermediate shell 12, which can not only achieve ventilation, but also reserve a certain space for the explosion-proof valve 31 when the explosion-proof valve 31 explodes, accommodate a part of the explosion-proof valve 31 after explosion, and avoid the exploded explosion-proof valve 31 impacting other components and protecting other components.

[0190] In addition, since the second ventilation opening 111 is provided on the side wall of the housing 1, when the holding member 9 is held to lift the energy storage device 100, the hot gas discharged through the second ventilation opening 111 can be prevented from contacting the user's hand, thereby avoiding scalding or wetting the user's hand.

[0191] In some embodiments, the circuit main board 7 is disposed in the bottom shell 13, and the circuit main board 7 is located on one side of the battery 3. The intermediate shell 12 is provided with an installation through groove 126 for installing the fan 72. The circumferential edge of the installation through groove 126 projects onto the inner bottom wall of the bottom shell 13 as a third projection ring, and the projection of the circuit main board 7 on the inner bottom wall of the bottom shell 13 is a fourth projection, and a part of the fourth projection is located within the third projection ring. Thus, when the fan 72 is installed in the installation through groove 126, the fan 72 can make the gas around the circuit main board 7 flow to dissipate heat from the circuit main board 7.

[0192] In some embodiments, in combination Figure 2 、 Figure 27 、 Fig.28 and Figure 29As shown, the energy storage device 100 further includes an electrical connector 9b, which is electrically connected to the battery 3 and the circuit main board 7 respectively to achieve electrical connection between the battery 3 and the circuit main board 7. The middle housing 12 is also provided with an avoidance groove 127 for avoiding the electrical connector 9b, so as to prevent interference between the middle housing 12 and the electrical connector 9b and ensure that all components can be assembled together; at the same time, the electrical connector 9b can also be limited.

[0193] Exemplarily, the electrical connector 9b can be a copper connecting piece, an aluminum connecting piece or an electrical connecting wire, etc.

[0194] During discharging, the current output by the battery 3 is first transmitted to the circuit main board 7 through the electrical connector 9b, then transmitted to the power plug 114 through the wire harness, and finally transmitted to the device to be charged to achieve discharging of the battery 3; during charging, the external current is transmitted to the circuit main board 7 through the power plug 114 and the wire harness, and then transmitted to the battery 3 through the electrical connector 9b to achieve charging of the battery 3.

[0195] The embodiment of the present invention also discloses an energy storage system, and the energy storage system has the energy storage device as described in any of the foregoing embodiments. It can be understood that the energy storage system having the energy storage device described above can bring the same or similar beneficial effects as the energy storage device. For details, reference can be made to the description of the embodiments of the energy storage device, and details will not be repeated here.

[0196] In practical applications, the energy storage system can be a portable energy storage system, and the energy storage system can be conveniently moved to the target location according to the actual application location.

[0197] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0198] In addition, the above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the content of this specification should not be construed as a limitation on the present application, and the protection scope of the present application should be subject to the appended claims.

Claims

1. An energy storage device, characterized in that, The energy storage device includes: A housing; A clamping member disposed within the housing and having a clamping space; A battery placed within the clamping space; A main board mounting member placed within the housing and connected to the clamping member, and the main board mounting member is located on one side of the battery; and A circuit main board placed within the housing and mounted on the main board mounting member, and there is a spacing between the circuit main board and the clamping member, and the circuit main board is electrically connected to the battery.

2. The energy storage device according to claim 1, wherein There is one battery, and the energy of the energy storage device is greater than or equal to 1 KWH.

3. The energy storage device according to claim 1, characterized in that, The main board mounting member is a housing structure with a cavity, and the circuit main board is mounted in the cavity of the main board mounting member.

4. The energy storage device according to claim 3, wherein A convex post protrudes from the middle of the clamping member, and the circuit main board is provided with a first through hole, and the convex post passes through the first through hole.

5. The energy storage device according to claim 4, wherein The convex post passes through the first through hole and is connected to the main board mounting member.

6. The energy storage device according to claim 5, wherein, The main board mounting member is provided with a sleeve structure located in the cavity, and the convex post passes through the hollow part of the sleeve structure.

7. The energy storage device according to claim 3, characterized in that A first step structure is provided at the edge of the main board mounting member, and the first step structure extends along the periphery of the main board mounting member. The first step structure sleeves the outer periphery of the clamping member, and the first step structure abuts against the top of the battery.

8. The energy storage device according to claim 3, wherein, A card slot is provided at the edge of the main board mounting member, and a convex strip is provided on the surface of the clamping member facing the main board mounting member. The convex strip extends in the direction towards the main board mounting member, and the convex strip is inserted into the card slot.

9. The energy storage device according to claim 3, characterized in that, A wiring groove is provided on the outer surface of the main board mounting member, and a separating protrusion is provided in the wiring groove to divide the wiring groove into a plurality of sub-wiring grooves, and the plurality of sub-wiring grooves are used to separate the wire bundles electrically connected to the circuit main board.

10. The energy storage device according to claim 3, characterized in that, Second side ribs protrude from the inner side wall of the housing and abut against the main board mounting member. Bottom ribs protrude from the inner bottom wall of the housing. A partition is provided between the bottom ribs and the second side ribs. The partition is connected to the inner bottom wall of the housing and abuts against the main board mounting member.

11. The energy storage device according to claim 3, characterized in that, The main board mounting member is provided with a first ventilation port and a heat dissipation hole that are communicated with each other. The housing is provided with a second ventilation port, and the second ventilation port is respectively communicated with the first ventilation port and the heat dissipation hole; A fan and electronic components are provided on the circuit main board. The fan forms a heat convection through the first ventilation port, the heat dissipation hole and the second ventilation port to dissipate heat from the electronic components.

12. The energy storage device according to claim 11, wherein, The first ventilation port is arranged adjacent to the top of the battery. The heat dissipation hole includes a first sub-heat dissipation hole arranged adjacent to the bottom of the battery. The fan is arranged adjacent to the top of the battery; There is a first gap between the main board mounting member and the inner side wall of the housing, and the first gap is communicated with the second ventilation port. There is a second gap between the main board mounting member and the inner bottom wall of the housing, and the second gap is respectively communicated with the first gap and the first sub-heat dissipation hole; The inner sidewall of the housing is convexly provided with second side ribs located in the first gap, the second side ribs are in contact with the main board mounting member, the inner bottom wall of the housing is convexly provided with bottom ribs, a partition is arranged between the bottom ribs and the second side ribs, the partition is connected to the inner bottom wall of the housing and is in contact with the main board mounting member, there is a third gap between the partition and the inner sidewall of the housing, and at least one end of the bottom ribs is spaced from the inner sidewall of the housing.

13. The energy storage device according to claim 12, wherein The partition includes a first side face facing away from the inner bottom wall and an inclined face connected to the first side face. In the direction from the first side face to the inner bottom wall, the inclined face is gradually inclined towards the bottom ribs from its connection with the first side face.

14. The energy storage device according to claim 11, characterized in that, The electronic component includes a first functional device with a temperature higher than or equal to 110 °C in the operating state, the air outlet of the fan is arranged towards the first functional device, the energy storage device further includes heat dissipation fins, the heat dissipation fins are arranged on the side of the first functional device facing away from the clamping member, and the heat dissipation fins extend along the axial direction of the fan.

15. The energy storage device according to claim 11, wherein The heat dissipation hole includes a second sub-heat dissipation hole, and the projection of the circumferential edge of the second sub-heat dissipation hole on the inner sidewall of the housing is a first projection ring; The electronic component includes a first functional device with a temperature higher than or equal to 110 °C in the operating state, the projection of the first functional device on the inner sidewall of the housing is a first projection, and at least part of the first projection is located within the first projection ring.

16. The energy storage device according to claim 11, wherein, A waterproof breathable film is provided at the second ventilation opening.

17. The energy storage device according to any one of claims 1-16, characterized in that, The energy storage device further includes a heat insulation member, and the heat insulation member is arranged between the circuit main board and the clamping member.

18. The energy storage device according to claim 17, wherein A second through groove is provided at the periphery of the heat insulation member, the clamping member is convexly provided with a second bending member, the second bending member passes through the second through groove, and the second bending member can be bent to be in contact with the heat insulation member.

19. An energy storage system, characterized in that, The energy storage system has the energy storage device according to any one of claims 1-18.

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