Energy storage battery pack

Abstract

The utility model discloses an energy storage battery pack which comprises a shell assembly, a battery module and a connecting terminal, the shell assembly comprises a shell and a waterproof part, the shell is provided with an opening, and the waterproof part is used for sealing the opening; the battery module is arranged in the shell; the connecting terminal is electrically connected with the battery module, the connecting terminal is arranged at the opening, and after the connecting terminal is connected with the connecting terminal corresponding to the other energy storage battery pack, the energy storage battery pack and the other energy storage battery pack are connected in parallel and expanded; at least one containing groove is further formed in the shell, and the containing groove is used for containing a waterproof component of one energy storage battery pack or a waterproof component of another energy storage battery pack. According to the energy storage battery pack provided by the embodiment of the invention, the taken-down waterproof part can be placed in the accommodating groove to be accommodated, so that the waterproof part is prevented from being lost due to no position for accommodating in the use process, and when parallel operation capacity expansion is cut off, the waterproof part can be taken out from the accommodating groove and the opening is sealed again, so that the waterproof part is prevented from being lost. Therefore, the energy storage battery pack is prevented from being damaged by water.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and more specifically, to an energy storage battery pack. Background Art

[0002] With the vigorous promotion of green and clean energy, especially in Europe and the United States, more and more energy storage systems are entering households, providing green and clean electricity. Balcony photovoltaic energy storage systems, also known as small home green power systems, are a key energy storage system. They can be installed in locations such as balconies, courtyards, and garages. Their small size and relatively light weight make them highly mobile and suitable for a variety of outdoor power usage scenarios. Balcony photovoltaic energy storage systems typically consist of solar panels and energy storage battery packs. The electricity generated by the solar panels is stored in the energy storage battery packs, which then power various electrical devices. The energy storage battery packs consist of a main battery pack and a booster pack, the number of which can be increased based on user power needs. The main battery packs and booster packs can be stacked and connected using connectors between the main battery pack and the booster pack, or between the booster packs, to achieve smooth capacity expansion, for example, from 2 kWh to 10 kWh. Due to waterproof requirements, the main battery pack and the power-up pack are equipped with waterproof plugs or waterproof covers on the connection terminals between the main battery pack and the power-up pack, and on the connection terminals between the power-up pack and the power-up pack when they leave the factory, so as to prevent water from entering the connection terminals and causing damage to the battery pack. However, in some scenarios, such as household power scenarios, when the user needs to expand the capacity of the energy storage battery pack, it is necessary to remove the waterproof plugs on the connection terminals of the main battery pack and the waterproof covers on the connection terminals of the power-up pack, and then stack the main battery pack and the power-up pack so that the connection terminals of the main battery pack and the connection terminals on the power-up pack are connected to achieve capacity expansion. However, after the waterproof plugs and waterproof covers are removed, they are easily forgotten or even lost by the user because they have not been used again for a long time. In other scenarios, such as outdoor power scenarios, users need to take out the main battery pack and carry it outdoors for use. However, if the waterproof plug of the main battery pack is lost, the connection terminals of the main battery pack will be exposed, the waterproof function of the main battery pack will be destroyed, and the risk of damage to the main battery pack will be increased. Similarly, the same problem will occur if the waterproof plug or waterproof cover of the power-up pack is lost. Therefore, the existing stacked energy storage power supply system lacks a good anti-loss storage design for the waterproof plug and the waterproof cover. Utility Model Content

[0003] An embodiment of the present application provides an energy storage battery pack.

[0004] The energy storage battery pack according to the embodiment of the present application includes:

[0005] A housing assembly, the housing assembly comprising a housing and a waterproof component, the housing having an opening, and the waterproof component being used to seal the opening;

[0006] a battery module, the battery module being disposed in the housing;

[0007] a connecting terminal electrically connected to the battery module, the connecting terminal being provided at the opening, and after the connecting terminal is connected to a corresponding connecting terminal of another energy storage battery pack, the energy storage battery pack and the other energy storage battery pack are connected in parallel for capacity expansion;

[0008] The housing is further formed with at least one accommodating groove, and the accommodating groove is used to accommodate the waterproof component of the energy storage battery pack or the waterproof component of the other energy storage battery pack.

[0009] The energy storage battery pack provided in the embodiment of the present application can place the removed waterproof component in the receiving groove for storage when several energy storage battery packs are connected in parallel to expand the capacity by connecting terminals, so as to avoid the waterproof component being lost due to lack of storage space during use. When disconnecting and paralleling for expansion, the waterproof component can be removed from the receiving groove and the opening can be resealed to prevent water from entering the energy storage battery pack and causing damage.

[0010] In some embodiments, the housing has two openings, the two openings including a first opening and a second opening, the first opening is located on the upper surface of the housing, and the second opening is located on the lower surface of the housing;

[0011] The energy storage battery pack is provided with two connecting terminals, the two connecting terminals including a first connecting terminal and a second connecting terminal, the first connecting terminal and the second connecting terminal are both electrically connected to the battery module;

[0012] The first connection terminal is provided at the first opening. After the first connection terminal is connected to the second connection terminal corresponding to the upper energy storage battery pack, the energy storage battery pack and the upper energy storage battery pack are connected in parallel for capacity expansion.

[0013] The second connection terminal is provided at the second opening. After the second connection terminal is connected to the first connection terminal corresponding to the lower energy storage battery pack, the energy storage battery pack and the lower energy storage battery pack are connected in parallel for capacity expansion.

[0014] In this way, the first opening and the second opening are respectively arranged on the upper top surface and the lower bottom surface of the shell. When multiple energy storage battery packs need to be connected in parallel to expand the capacity, it can be achieved by stacking the multiple energy storage battery packs, which is conducive to reducing the difficulty of connecting the energy storage battery packs in parallel.

[0015] In certain embodiments, the first opening is located on the upper top surface of the housing, the second opening is located on the lower bottom surface of the housing, the first opening protrudes outward to form a protrusion, and the first opening is configured so that when the energy storage battery pack and the upper energy storage battery pack are connected in parallel for capacity expansion, the protrusion of the first opening is inserted into the second opening of the upper energy storage battery pack.

[0016] In this way, the first opening and the second opening of two adjacent energy storage battery packs can cooperate with each other to facilitate the connection of the two adjacent energy storage battery packs.

[0017] In some embodiments, the waterproof component includes a first waterproof component and a second waterproof component, the first waterproof component is used to seal the first opening, and the second waterproof component is used to seal the second opening.

[0018] In this way, the first and second waterproof members are provided for the first and second openings, respectively, so as to seal the first and second openings.

[0019] In some embodiments, the receiving groove includes a first receiving groove and a second receiving groove, the first receiving groove is used to place the first waterproof component, and the second receiving groove is used to place the second waterproof component.

[0020] In this way, two receiving grooves are provided for placing the first waterproof component and the second waterproof component respectively, so as to facilitate the storage and use of the first waterproof component and the second waterproof component.

[0021] In some embodiments, the first receiving groove and the second receiving groove are located on the upper top surface of the housing.

[0022] In this way, the first accommodating groove and the second accommodating groove are both arranged on the upper top surface of the housing to facilitate taking out the first waterproof component and the second waterproof component.

[0023] In some embodiments, the first receiving groove and the second receiving groove are located on the lower bottom surface of the housing.

[0024] In this way, the first receiving groove and the second receiving groove are both arranged on the lower bottom surface of the housing to facilitate taking out the first waterproof component and the second waterproof component.

[0025] In some embodiments, one of the first accommodating groove and the second accommodating groove is disposed on the upper top surface of the housing, and the other is disposed on the lower bottom surface of the housing.

[0026] In this way, the first accommodating groove and the second accommodating groove are respectively arranged on corresponding surfaces of the two energy storage battery packs.

[0027] In some embodiments, the first waterproof component is a waterproof cover, and the second waterproof component is a waterproof plug.

[0028] In this way, the first waterproof component and the second waterproof component are respectively used to seal two different openings.

[0029] In some embodiments, the first waterproof component includes a first bottom plate and a first flange, the first flange is disposed around the first bottom plate, and the first flange is configured to be sleeved on the protruding portion to cover the first opening.

[0030] Thus, when in use, the first waterproof component covers the protrusion to close the first opening, thereby sealing the housing.

[0031] In some embodiments, a first boss adapted to the first waterproof component is provided in the middle of the first receiving groove, and the first waterproof component is sleeved on the first boss and thus clamped in the first receiving groove.

[0032] In this way, when the first waterproof component is stored, the first boss is used to support the first waterproof component to prevent the first waterproof component from being deformed and affecting the sealing effect due to collision with external forces when the first waterproof component is stored.

[0033] In some embodiments, first avoidance portions are formed on both sides of the first boss.

[0034] In this way, the air pressure in the first waterproof component can be balanced, thereby preventing vacuum from being formed between the first boss and the first waterproof component, which makes it difficult to remove the first waterproof component.

[0035] In some embodiments, the housing further forms first avoidance grooves located on both sides of the first accommodating groove.

[0036] In this way, the first avoidance groove is used for the user to insert his fingers to facilitate the removal of the first waterproof component.

[0037] In some embodiments, the second waterproof component includes a second base plate and a second flange, the second flange is arranged on the second base plate and the edge of the second base plate extends out of the second flange, and the second flange is configured to cover the second opening when the second flange is sleeved on the second connecting terminal.

[0038] Thus, when in use, the second flange cooperates with the connecting terminal to fix the second waterproof component, and the second bottom plate covers the second opening to seal the housing.

[0039] In some embodiments, a second boss corresponding to the second waterproof component is provided in the middle of the second receiving groove, and the second waterproof component is sleeved on the second boss to be locked in the second receiving groove.

[0040] In this way, the second boss is used to support the second waterproof component to prevent the second waterproof component from being deformed and affecting the sealing effect due to collision by external force when being stored.

[0041] In some embodiments, an edge of the second receiving groove is provided with an avoidance step for avoiding the second bottom plate.

[0042] In this way, the second bottom plate is immersed in the second avoidance groove, which is beneficial to protecting the sealed bottom plate.

[0043] In some embodiments, two oppositely disposed second avoidance grooves are provided on a surface of the second bottom plate away from the second flange.

[0044] In this way, the second avoidance groove is used for the user to insert his fingers to facilitate the removal of the second waterproof component.

[0045] In some embodiments, when the waterproof component is placed in the receiving groove, the waterproof component is immersed in the receiving groove or one side of the waterproof component is flush with the outer surface of the receiving groove.

[0046] In this way, the waterproof component will be more beautiful after being stored, and will not affect the connection between the additional battery pack and the main battery pack.

[0047] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0049] Figure 1 It is a structural diagram of an energy storage battery pack according to an embodiment of the present application;

[0050] Figure 2 It is a schematic structural diagram of multiple energy storage battery packs stacked in an embodiment of the present application;

[0051] Figure 3 is a cross-sectional view of an energy storage battery pack according to an embodiment of the present application;

[0052] Figure 4 It is a schematic structural diagram of a receiving slot of an energy storage battery pack according to an embodiment of the present application;

[0053] Figure 5 Schematic diagram of the structure of the first waterproof component of the energy storage battery pack according to the embodiment of the present application;

[0054] Figure 6 It is a schematic structural diagram of the second waterproof component of the energy storage battery pack according to the embodiment of the present application.

[0055] Description of the main component symbols: energy storage battery pack 1000, main battery pack 1001, power pack 1002, shell assembly 100, shell 10, opening 11, first opening 111, protrusion 1111, second opening 112, accommodating groove 12, first accommodating groove 121, first boss 1211, first avoidance portion 1212, first avoidance groove 1213, second accommodating groove 122, second boss 1221, avoidance step 1222, upper top surface 13, lower bottom surface 14, waterproof component 20, first waterproof component 21, first bottom plate 211, first flange 212, second waterproof component 22, second bottom plate 221, second avoidance groove 2211, second flange 222, battery module 200, connecting terminal 300, first connecting terminal 301, second connecting terminal 302. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0058] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0059] The disclosure herein provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0060] With the vigorous promotion of green and clean energy, especially in Europe and the United States, more and more energy storage systems are entering households, providing green and clean electricity. Balcony photovoltaic energy storage systems, also known as small home green power systems, are a key energy storage system. They can be installed in locations such as balconies, courtyards, and garages. Their small size and relatively light weight make them highly mobile and suitable for a variety of outdoor power usage scenarios. Balcony photovoltaic energy storage systems typically consist of solar panels and energy storage battery packs. The electricity generated by the solar panels is stored in the energy storage battery packs, which then power various electrical devices. The energy storage battery packs consist of a main battery pack and a booster pack, the number of which can be increased based on user power needs. The main battery packs and booster packs can be stacked and connected using connectors between the main battery pack and the booster pack, or between the booster packs, to achieve smooth capacity expansion, for example, from 2 kWh to 10 kWh. Due to waterproof requirements, the main battery pack and the power-up pack are equipped with waterproof plugs or waterproof covers on the connection terminals between the main battery pack and the power-up pack, and on the connection terminals between the power-up pack and the power-up pack when they leave the factory, so as to prevent water from entering the connection terminals and causing damage to the battery pack. However, in some scenarios, such as household power scenarios, when the user needs to expand the capacity of the energy storage battery pack, it is necessary to remove the waterproof plugs on the connection terminals of the main battery pack and the waterproof covers on the connection terminals of the power-up pack, and then stack the main battery pack and the power-up pack so that the connection terminals of the main battery pack and the connection terminals on the power-up pack are connected to achieve capacity expansion. However, after the waterproof plugs and waterproof covers are removed, they are easily forgotten or even lost by the user because they have not been used again for a long time. In other scenarios, such as outdoor power scenarios, users need to take out the main battery pack and carry it outdoors for use. However, if the waterproof plug of the main battery pack is lost, the connection terminals of the main battery pack will be exposed, the waterproof function of the main battery pack will be destroyed, and the risk of damage to the main battery pack will be increased. Similarly, the same problem will occur if the waterproof plug or waterproof cover of the power-up pack is lost. Therefore, the existing stacked energy storage power supply system lacks a good anti-loss storage design for the waterproof plug and the waterproof cover.

[0061] See also Figures 1 to 3The energy storage battery pack 1000 according to the embodiment of the present application includes a housing assembly 100, a battery module 200, and a connection terminal 300. The housing assembly 100 includes a housing 10 and a waterproof component 20. The housing 10 defines an opening 11, and the waterproof component 20 is used to seal the opening 11. The battery module 200 is disposed within the housing 10. The connection terminal 300 is electrically connected to the battery module 200 and is disposed at the opening 11. After the connection terminal 300 is connected to the corresponding connection terminal 300 of another energy storage battery pack 1000, the energy storage battery pack 1000 and the other energy storage battery pack 1000 are paralleled for capacity expansion. The housing 10 also includes at least one accommodating groove 12, which is used to accommodate the waterproof component 20 of the energy storage battery pack 1000 or the waterproof component 20 of another energy storage battery pack 1000. It should be understood that the accommodating groove 12 can be used to accommodate the waterproof component of any energy storage battery pack 1000. For example, if three energy storage battery packs 1000 are stacked up and down, the accommodating groove 12 in one energy storage battery pack 1000 can be used to place the waterproof component 20 of any one of the three energy storage battery packs 1000.

[0062] With the energy storage battery pack 1000 provided in the embodiment of the present application, when several energy storage battery packs 1000 are connected in parallel for capacity expansion via the connection terminals 300, the removed waterproof component 20 can be placed in the receiving groove 12 for storage, so as to avoid the waterproof component 20 being lost due to lack of storage space during use. When disconnecting and paralleling for capacity expansion, the waterproof component 20 can be removed from the receiving groove 12 and the opening 11 can be resealed to prevent water from entering the energy storage battery pack 1000 and causing damage.

[0063] For details, please refer to Figure 2 The energy storage battery pack 1000 is divided into a main battery pack 1001 and a power-up pack 1002. The main battery pack 1001 can be stacked with multiple power-up packs 1002. Adjacent battery packs are connected via connection terminals 300, with the main battery pack 1001 located at the top of the stacked battery packs. In this embodiment of the present application, the energy storage battery pack 1000 primarily refers to the power-up pack 1002.

[0064] In some embodiments, the main battery pack 1001 includes an inverter and battery modules. The inverter is used to convert the DC power stored in the battery modules into AC power for use by electrical devices. It can also be used to convert AC power to charge the battery modules, and can also be used to convert DC power generated by solar panels to charge the battery modules through voltage conversion. The power-up pack 1002 includes battery modules. When the main battery pack 1001 and at least one power-up pack 1002 are stacked, adjacent battery packs are connected via connection terminals 300. This allows the battery modules in the main battery pack 1001 and at least one power-up pack 1002 to be electrically connected, thereby expanding the capacity, for example, from 2 kWh to 10 kWh. Furthermore, the inverter in the main battery pack 1001 can simultaneously charge and discharge the battery modules in the main battery pack 1001 and at least one power-up pack 1002.

[0065] See also Figure 3 In some embodiments, the housing 10 has two openings 11 , including a first opening 111 and a second opening 112 . The first opening 111 is located on the upper surface 13 of the housing 10 , and the second opening 112 is located on the lower surface 14 of the housing 10 .

[0066] The energy storage battery pack 1000 is provided with two connection terminals 300 , including a first connection terminal 301 and a second connection terminal 302 , both of which are electrically connected to the battery module 200 ;

[0067] The first connection terminal 301 is provided at the first opening 111. After the first connection terminal 301 is connected to the second connection terminal 302 corresponding to the upper energy storage battery pack 1000, the energy storage battery pack 1000 and the upper energy storage battery pack 1000 are paralleled for capacity expansion;

[0068] The second connection terminal 302 is provided at the second opening 112 . After the second connection terminal 302 is connected to the first connection terminal 301 corresponding to the lower energy storage battery pack 1000 , the energy storage battery pack 1000 and the lower energy storage battery pack 1000 are paralleled for capacity expansion.

[0069] In this way, the first opening 111 and the second opening 112 are respectively arranged on the upper top surface 13 and the lower bottom surface 14 of the shell 10. When multiple energy storage battery packs 1000 need to be connected in parallel to expand the capacity, it can be achieved by stacking the multiple energy storage battery packs 1000, which is beneficial to reducing the difficulty of connecting the energy storage battery packs 1000 in parallel.

[0070] Specifically, in the embodiment of the present application, the first opening 111 and the second opening 112 are located on the same straight line in the vertical direction, and correspondingly, the first connection terminal 301 and the second connection terminal 302 are also located on the same straight line in the vertical direction. In this way, the energy storage battery pack 1000 can be stacked more neatly when stacked and connected.

[0071] In other embodiments, if the energy storage battery pack 1000 is a main battery pack 1001 , only one opening 11 may be provided thereon. The opening 11 is located at the bottom of the main battery pack 1001 , and the connection terminal 300 is located in the opening 11 .

[0072] In some embodiments, the first opening 111 is located on the upper top surface 13 of the housing 10, and the second opening 112 is located on the lower bottom surface 14 of the housing 10. The first opening 111 protrudes outward to form a protrusion 1111. The first opening 111 is configured so that when the energy storage battery pack 1000 is paralleled with the upper energy storage battery pack 1000 for capacity expansion, the protrusion 1111 of the first opening 111 is inserted into the second opening 112 of the upper energy storage battery pack 1000.

[0073] In this way, the first opening 111 and the second opening 112 of two adjacent energy storage battery packs 1000 can cooperate with each other to facilitate the connection of the two adjacent energy storage battery packs 1000 .

[0074] Specifically, in the embodiment of the present application, the first connection terminal 301 is located in the protrusion 1111. When the energy storage battery pack 1000 is paralleled with the energy storage battery pack 1000 above to expand the capacity, the second connection terminal 302 of the energy storage battery pack 1000 above extends into the protrusion 1111 and connects to the first connection terminal 301.

[0075] It should be noted that the protrusion 1111 cannot be set at the second opening 112. When the protrusion 1111 is set at the second opening 112, since the second opening 112 is set on the lower bottom surface 14 of the shell 10, the energy storage battery pack 1000 at the bottom cannot be placed horizontally, and the energy storage battery pack 1000 cannot be stacked.

[0076] See also Figure 1 In some embodiments, the waterproof component 20 includes a first waterproof component 21 and a second waterproof component 22 . The first waterproof component 21 is used to seal the first opening 111 , and the second waterproof component 22 is used to seal the second opening 112 .

[0077] In this way, the first and second waterproof members 21 and 22 are provided for the first and second openings 111 and 112 , respectively, so as to seal the first and second openings 111 and 112 .

[0078] Specifically, in the embodiment of the present application, there are two waterproof components 20, and the two waterproof components 20 are different. In other embodiments, when the energy storage battery pack 1000 is a main battery pack 1001, only one waterproof component 20 may be provided.

[0079] In some embodiments, the receiving groove 12 includes a first receiving groove 121 and a second receiving groove 122 . The first receiving groove 121 is used to place the first waterproof component 21 , and the second receiving groove 122 is used to place the second waterproof component 22 .

[0080] In this way, two receiving grooves 12 are provided for respectively placing the first waterproof component 21 and the second waterproof component 22 , so as to facilitate the storage and use of the first waterproof component 21 and the second waterproof component 22 .

[0081] Specifically, in the embodiment of the present application, since the two waterproof components 20 are different, the specifications of the corresponding first accommodating groove 121 and the second accommodating groove 122 are also different. Therefore, the first waterproof component 21 and the second waterproof component 22 cannot be interchanged.

[0082] In other embodiments, the first accommodating groove 121 and the second accommodating groove 122 can also be configured as an accommodating cavity in which the shapes of the first waterproof component 21 and the second waterproof component 22 can be ignored. In this case, the first waterproof component 21 and the second waterproof component 22 can be placed and stored interchangeably.

[0083] See also Figure 1 In some embodiments, the first receiving groove 121 and the second receiving groove 122 are located on the upper top surface 13 of the housing 10 .

[0084] In this way, the first receiving groove 121 and the second receiving groove 122 are both provided on the upper top surface 13 of the housing 10 to facilitate access to the first waterproof component 21 and the second waterproof component 22 .

[0085] Specifically, in the embodiment of the present application, the first accommodating groove 121 and the second accommodating groove 122 can be located on the upper top surface 13 of the housing 10. When in use, the energy storage battery pack 1000 located above can be removed to immediately see the first waterproof component 21 and the second waterproof component 22 stored in the upper top surface 13 of the energy storage battery pack 1000 located below.

[0086] In some embodiments, the first receiving groove 121 and the second receiving groove 122 are located on the lower bottom surface 14 of the housing 10 .

[0087] In this way, the first receiving groove 121 and the second receiving groove 122 are both provided on the lower bottom surface 14 of the housing 10 to facilitate access to the first waterproof component 21 and the second waterproof component 22 .

[0088] Specifically, in some embodiments, the first accommodating groove 121 and the second accommodating groove 122 can also be located on the lower top surface of the outer shell 10. When in use, after removing the energy storage battery pack 1000 located above, the first waterproof component 21 and the second waterproof component 22 stored therein can be taken out from under the removed energy storage battery pack 1000.

[0089] In some embodiments, one of the first receiving groove 121 and the second receiving groove 122 is disposed on the upper top surface 13 of the housing 10 , and the other is disposed on the lower bottom surface 14 of the housing 10 .

[0090] In this way, the first receiving groove 121 and the second receiving groove 122 are respectively disposed on corresponding surfaces of the two energy storage battery packs 1000 .

[0091] Specifically, in some embodiments, the first accommodating groove 121 and the second accommodating groove 122 can also be respectively arranged on the upper top surface 13 of the shell 10 and the lower bottom surface 14 of the shell 10. At this time, the first accommodating groove 121 is arranged on the upper top surface 13 and is close to the first opening 111, and the second accommodating groove 122 is arranged on the lower bottom surface 14 and is close to the second opening 112. In this way, it is easier to find the waterproof component 20 corresponding to the opening 11 during use.

[0092] In some embodiments, the first waterproof component 21 is a waterproof cover, and the second waterproof component 22 is a waterproof plug.

[0093] In this way, the first waterproof component 21 and the second waterproof component 22 are respectively used to seal two different openings 11 .

[0094] Specifically, in the embodiment of the present application, since the first opening 111 is provided with a protrusion 1111, the first waterproof component 21 is a waterproof cover that can be provided on the protrusion 1111. The second opening 112 is in the shape of an inward groove, so the second waterproof component 22 is a waterproof plug that can be inserted into the second opening 112.

[0095] In other embodiments, the structures of the first waterproof component 21 and the second waterproof component 22 can also be selected according to actual needs, which will not be elaborated here.

[0096] See also Figure 4 and Figure 5 In some embodiments, the first waterproof component 21 includes a first bottom plate 211 and a first flange 212 . The first flange 212 is disposed around the first bottom plate 211 . The first flange 212 is configured to be sleeved on the protrusion 1111 to cover the first opening 111 .

[0097] Thus, when in use, the first waterproof component 21 covers the protruding portion 1111 to close the first opening 111 , thereby sealing the housing 10 .

[0098] Specifically, the first flange 212 is sleeved on the protruding portion 1111 so that the first bottom plate 211 covers the first opening 111, thereby making the first opening 111 meet the waterproof standard. In the embodiment of the present application, the waterproof standard is the IP65 waterproof standard.

[0099] In the embodiment of the present application, the first waterproof component 21 is an integrally formed structure, and a transition fillet is formed at the connection between the first flange 212 and the first base plate 211 to facilitate demolding of the first waterproof component 21. The first flange 212 and the first base plate 211 have substantially the same thickness to avoid injection molding defects such as shrinkage cavities.

[0100] See also Figure 4 In some embodiments, a first boss 1211 adapted to the first waterproof component 21 is provided in the middle of the first receiving groove 121 , and the first waterproof component 21 is sleeved on the first boss 1211 and thus clamped in the first receiving groove 121 .

[0101] In this way, when the first waterproof component 21 is stored, the first boss 1211 is used to support the first waterproof component 21 to prevent the first waterproof component 21 from being deformed and affecting the sealing effect due to collision with external forces when the first waterproof component 21 is stored.

[0102] Specifically, in the embodiment of the present application, the first boss 1211 and the first waterproof component 21 are interference fit, so that the first waterproof component 21 can be more firmly fixed when stored to prevent it from falling off easily.

[0103] A transition fillet is formed on the top edge of the first boss 1211 , and the transition fillet can serve as a guide, making it easier to buckle the first waterproof component 21 onto the first boss 1211 .

[0104] In some embodiments, first avoidance portions 1212 are formed on both sides of the first protrusion 1211 .

[0105] In this way, the air pressure in the first waterproof component 21 can be balanced, thereby preventing vacuum from being formed between the first boss 1211 and the first waterproof component 21, which makes it difficult to remove the first waterproof component 21.

[0106] Specifically, in the embodiment of the present application, since the first boss 1211 and the first waterproof component 21 form an interference fit, when the first waterproof component 21 is buckled onto the first boss 1211, if the first avoidance portion 1212 is not provided at this time, a sealed space will be formed between the first waterproof component 21 and the first boss 1211. When the first waterproof component 21 is buckled onto the first boss 1211, a negative pressure will be generated between the first waterproof component 21 and the first boss 1211, thereby making it impossible for the first waterproof component 21 to be removed from the first boss 1211. Therefore, the provision of the first avoidance portion 1212 can prevent the formation of a sealed space between the first waterproof component 21 and the first boss 1211, thereby facilitating the removal of the first waterproof component 21 from the first boss 1211.

[0107] In other embodiments, when the first boss 1211 and the first waterproof component 21 are in transition fit or clearance fit, the first avoidance portions 1212 may not be provided on both sides of the first boss 1211 .

[0108] In some embodiments, the housing 10 further forms first avoidance grooves 1213 located on both sides of the first receiving groove 121 .

[0109] In this way, the first avoidance groove 1213 is used for the user to insert his fingers to facilitate the removal of the first waterproof component 21.

[0110] Specifically, in the embodiment of the present application, the first avoidance groove 1213 is semicircular, and the depth of the first avoidance groove 1213 is less than or equal to the first accommodating groove 121. When the first waterproof component 21 needs to be removed from the first boss 1211, the fingers can be inserted into the first avoidance groove 1213 to pinch the two side edges of the first waterproof component 21, thereby easily removing the first waterproof component 21 from the first boss 1211.

[0111] See also Figure 4 and Figure 6 In some embodiments, the second waterproof component 22 includes a second base plate 221 and a second flange 222. The second flange 222 is arranged on the second base plate 221 and the edge of the second base plate 221 extends out of the second flange 222. When the second flange 222 is configured to be sleeved on the second connecting terminal 302, the second base plate 221 covers the second opening 112.

[0112] Thus, when in use, the second flange 222 cooperates with the connecting terminal 300 to fix the second waterproof component 22 , and the second bottom plate 221 covers the second opening 112 to seal the housing 10 .

[0113] Specifically, the second flange 222 extends from the edge of the second base plate 221 to better seal the second opening 112. The second flange 222 is sleeved on the protrusion 1111 so that the second base plate 221 covers the second opening 112, thereby making the second opening 112 meet the waterproof standard. In the embodiment of the present application, the waterproof standard is the IP65 waterproof standard.

[0114] In the embodiment of the present application, the second waterproof component 22 is an integrally formed structure, and a transition fillet is formed at the connection between the second flange 222 and the second base plate 221 to facilitate demolding of the second waterproof component 22. The second flange 222 and the second base plate 221 have substantially the same thickness to avoid injection molding defects such as shrinkage cavities.

[0115] An elastic member is sleeved on the outer side of the second flange 222 ; the elastic member can fix the second waterproof component 22 on the second opening 112 , and at the same time, the elastic member can enhance the waterproof effect of the second waterproof component 22 .

[0116] Optionally, the elastic member may be made of rubber, silicone, elastic plastic or other materials with a certain degree of elasticity.

[0117] The elastic member includes a plurality of inverted rings, which are arranged along the axial direction of the second flange 222. In this way, the plurality of inverted rings form a plurality of waterproof structures, further improving the waterproof effect of the second waterproof component 22.

[0118] Specifically, the inverted ring is disposed on the outer surface of the elastic member, tilted downward, and the angle formed between the inverted ring and the horizontal plane is approximately 30°. In the embodiment of the present application, there are two inverted rings, which are distributed along the axial direction of the second flange 222. Furthermore, the thickness of the inverted ring should not be too thin. An inverted ring that is too thin will have a poor sealing effect and will be easily damaged. The thickness of the inverted ring should also not be too thick. An inverted ring that is too thick will have poor elasticity, which will be detrimental to the installation and removal of the second waterproof component 22.

[0119] In some embodiments, a second boss 1221 corresponding to the second waterproof component 22 is provided in the middle of the second receiving groove 122 , and the second waterproof component 22 is sleeved on the second boss 1221 and thus clamped in the second receiving groove 122 .

[0120] In this way, the second boss 1221 is used to support the second waterproof component 22 to prevent the second waterproof component 22 from being deformed and affecting the sealing effect due to collision by external forces when being stored.

[0121] Specifically, in the embodiment of the present application, the second boss 1221 and the second waterproof component 22 are interference fit, so that the second waterproof component 22 can be more firmly fixed when stored to prevent it from falling off easily.

[0122] A transition fillet is formed on the top edge of the second boss 1221 , and the transition fillet can serve as a guide, making it easier to buckle the second waterproof component 22 onto the second boss 1221 .

[0123] Furthermore, since the second boss 1221 and the second waterproof component 22 are in an interference fit, second relief portions should be formed on both sides of the second boss 1221. The provision of the second relief portions can prevent a sealed space from being formed between the second waterproof component 22 and the second boss 1221, thereby facilitating removal of the second waterproof component 22 from the second boss 1221.

[0124] In some embodiments, an edge of the second receiving groove 122 is provided with an avoidance step 1222 for avoiding the second bottom plate 221 .

[0125] In this way, the second bottom plate 221 is immersed in the second avoidance groove 2211, which is beneficial to protecting the sealed bottom plate.

[0126] Specifically, in the embodiment of the present application, in order to better seal the second opening 112, the edge of the second bottom plate 221 extends out of the second flange 222. In order to accommodate the edge of the second bottom plate 221, an avoidance step 1222 is provided around the edge of the second accommodating groove 122. When the second waterproof component 22 is provided in the second opening 112, the edge of the second bottom plate 221 can be completely embedded in the avoidance step 1222, thereby forming a seal for the second opening 112.

[0127] See also Figure 1 In some embodiments, two oppositely disposed second avoidance grooves 2211 are provided on the surface of the second bottom plate 221 away from the second flange 222 .

[0128] In this way, the second avoidance groove 2211 is used for the user to insert his fingers to facilitate the removal of the second waterproof component 22.

[0129] Specifically, in the embodiment of the present application, the second avoidance groove 2211 is semicircular, and the straight sides of the two second avoidance grooves 2211 are arranged opposite to each other. When the first waterproof component 21 needs to be removed from the first boss 1211, the fingers can be inserted into the second avoidance groove 2211 to pinch the two opposite side walls of the two second avoidance grooves 2211, thereby easily removing the first waterproof component 21 from the first boss 1211.

[0130] In some embodiments, when the waterproof component 20 is placed in the receiving groove 12 , the waterproof component 20 is immersed in the receiving groove 12 or one side of the waterproof component 20 is flush with the outer surface of the receiving groove 12 .

[0131] In this way, the waterproof component 20 will be more beautiful after being stored, and will not affect the connection between the additional battery pack and the main battery pack 1001.

[0132] Specifically, in the embodiment of the present application, when the waterproof component 20 is placed in the receiving groove 12 , the outer surface of the floor of the waterproof component 20 is flush with the outer surface of the receiving groove 12 .

[0133] In other application embodiments, the depth of the receiving groove 12 may also be increased so that when the waterproof component 20 is placed in the receiving groove 12 , the waterproof component 20 can be immersed in the receiving groove 12 .

[0134] In some embodiments, a cover plate may be provided at the opening of the receiving groove 12 . When the waterproof component 20 is placed in the receiving groove 12 and immersed in the receiving groove 12 , the cover plate may be provided at the opening of the receiving groove 12 to protect the waterproof component 20 .

[0135] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0136] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two or three, unless otherwise specifically defined.

[0137] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage battery pack, characterized in that: include: A housing assembly, the housing assembly comprising a housing and a waterproof component, the housing having an opening, and the waterproof component being used to seal the opening; a battery module, the battery module being disposed in the housing; a connecting terminal electrically connected to the battery module, the connecting terminal being provided at the opening, and after the connecting terminal is connected to a corresponding connecting terminal of another energy storage battery pack, the energy storage battery pack and the other energy storage battery pack are connected in parallel for capacity expansion; The housing is further formed with at least one accommodating groove, and the accommodating groove is used to accommodate the waterproof component of the energy storage battery pack or the waterproof component of the other energy storage battery pack.

2. The energy storage battery pack according to claim 1, characterized in that: The housing is provided with two openings, the two openings including a first opening and a second opening, the first opening is located on the upper top surface of the housing, and the second opening is located on the lower bottom surface of the housing; The energy storage battery pack is provided with two connecting terminals, the two connecting terminals including a first connecting terminal and a second connecting terminal, the first connecting terminal and the second connecting terminal are both electrically connected to the battery module; The first connection terminal is provided at the first opening. After the first connection terminal is connected to the second connection terminal corresponding to the upper energy storage battery pack, the energy storage battery pack and the upper energy storage battery pack are connected in parallel for capacity expansion. The second connection terminal is provided at the second opening. After the second connection terminal is connected to the first connection terminal corresponding to the lower energy storage battery pack, the energy storage battery pack and the lower energy storage battery pack are connected in parallel for capacity expansion.

3. The energy storage battery pack according to claim 2, characterized in that: The first opening is located on the upper top surface of the shell, and the second opening is located on the lower bottom surface of the shell. The first opening protrudes outward to form a protrusion. The first opening is configured so that when the energy storage battery pack and the upper energy storage battery pack are connected in parallel for capacity expansion, the protrusion of the first opening is inserted into the second opening of the upper energy storage battery pack.

4. The energy storage battery pack according to claim 3, characterized in that: The waterproof component includes a first waterproof component and a second waterproof component. The first waterproof component is used to seal the first opening, and the second waterproof component is used to seal the second opening.

5. The energy storage battery pack according to claim 4, characterized in that: The receiving groove includes a first receiving groove and a second receiving groove, the first receiving groove is used to place the first waterproof component, and the second receiving groove is used to place the second waterproof component.

6. The energy storage battery pack according to claim 5, characterized in that: The first accommodating groove and the second accommodating groove are located on the upper top surface of the shell.

7. The energy storage battery pack according to claim 5, characterized in that: The first accommodating groove and the second accommodating groove are located on the lower bottom surface of the housing.

8. The energy storage battery pack according to claim 5, characterized in that: One of the first accommodating groove and the second accommodating groove is arranged on the upper top surface of the shell, and the other is arranged on the lower bottom surface of the shell.

9. The energy storage battery pack according to claim 5, characterized in that: The first waterproof component is a waterproof cover, and the second waterproof component is a waterproof plug.

10. The energy storage battery pack according to claim 9, characterized in that: The first waterproof component includes a first bottom plate and a first flange. The first flange is arranged around the first bottom plate, and the first flange is configured to be sleeved on the protruding portion to cover the first opening.

11. The energy storage battery pack according to claim 10, characterized in that: A first boss adapted to the first waterproof component is provided in the middle of the first receiving groove, and the first waterproof component is sleeved on the first boss and thus clamped in the first receiving groove.

12. The energy storage battery pack according to claim 11, characterized in that: First avoidance portions are formed on both sides of the first boss.

13. The energy storage battery pack according to claim 10, characterized in that: The housing is further formed with first avoidance grooves located on both sides of the first accommodating groove.

14. The energy storage battery pack according to claim 9, characterized in that: The second waterproof component includes a second bottom plate and a second flange, the second flange is arranged on the second bottom plate and the edge of the second bottom plate extends out of the second flange, and the second flange is configured to cover the second opening when the second flange is sleeved on the second connecting terminal.

15. The energy storage battery pack according to claim 14, characterized in that: A second boss corresponding to the second waterproof component is provided in the middle of the second receiving groove, and the second waterproof component is sleeved on the second boss to be clamped in the second receiving groove.

16. The energy storage battery pack according to claim 14, characterized in that: An edge of the second receiving groove is provided with an avoidance step for avoiding the second bottom plate.

17. The energy storage battery pack according to claim 14, characterized in that: Two second avoidance grooves arranged opposite to each other are provided on the surface of the second bottom plate away from the second flange.

18. The energy storage battery pack according to claim 1, characterized in that: When the waterproof component is placed in the receiving groove, the waterproof component is immersed in the receiving groove or one side of the waterproof component is flush with the outer surface of the receiving groove.

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