CN221928319U - Top cap subassembly, energy memory and consumer - Google Patents

Abstract

The utility model discloses a top cover assembly, an energy storage device and electric equipment. The top cap assembly includes: the top cover is provided with a top cover hole which is communicated in the thickness direction of the top cover, the upper plastic is positioned on one side of the top cover, the lower plastic comprises a lower plastic body and a lower plastic extension part, the lower plastic body is positioned on one side of the top cover, which is away from the upper plastic, the lower plastic extension part is connected with the lower plastic body, the lower plastic extension part stretches into the top cover hole, and a first clamping structure is arranged on the inner side wall of the lower plastic extension part; the pole penetrates through the top cover hole, a second clamping structure is arranged on the part, penetrating through the lower plastic extension part, of the pole, and the first clamping structure is fixedly clamped with the second clamping structure.

Description

Top cap subassembly, energy memory and consumer

Technical Field

The utility model relates to the technical field of energy storage, in particular to a top cover assembly, an energy storage device and electric equipment.

Background

In general, the top cover assembly comprises a top cover, an upper plastic, a lower plastic, a pole and a current collecting disc, wherein a top cover hole is formed in the top cover, the upper plastic and the lower plastic are respectively arranged on two sides of the top cover, and the pole penetrates through the top cover hole and then is connected and fixed with the current collecting disc. In the related art, the lower plastic is easy to fall off from the pole, and the complexity of assembly operation is increased.

Disclosure of utility model

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides the top cover assembly, the lower plastic is not easy to fall off, and the assembly operation of the top cover assembly is simplified.

The utility model further provides an energy storage device with the top cover assembly.

The utility model further provides electric equipment with the energy storage device.

The top cap assembly according to an embodiment of the present utility model includes: the top cover is provided with a top cover hole penetrating in the thickness direction of the top cover, the upper plastic is located on one side of the top cover, the lower plastic comprises a lower plastic body and a lower plastic extension part, the lower plastic body is located on one side of the top cover, which is away from the upper plastic, the lower plastic extension part is connected with the lower plastic body, the lower plastic extension part stretches into the top cover hole, and a first clamping structure is arranged on the inner side wall of the lower plastic extension part; the pole penetrates through the top cover hole, a second clamping structure is arranged on the portion, penetrating through the lower plastic extension portion, of the pole, and the first clamping structure is fixedly clamped with the second clamping structure.

According to the top cover assembly provided by the embodiment of the utility model, the lower plastic extension part extends into the top cover hole and is clamped and fixed with the second clamping structure of the pole, so that the lower plastic is not easy to fall off from the pole, and the assembly operation of the top cover assembly is simplified. Meanwhile, the lower plastic extension part stretches into the top cover hole, so that the tightness between the lower plastic and the pole can be improved.

According to some embodiments of the utility model, the pole comprises a pole body and a pole extension, the pole body is located on a side of the upper plastic facing away from the top cover, the pole extension is connected to the pole body, the pole extension passes through the top cover hole, and the second clamping structure is disposed on the pole extension.

According to some embodiments of the utility model, the top cover comprises a first surface and a second surface, a part of the first surface is recessed toward the direction of the second surface to form a top cover sinking platform, the top cover Kong Kaishe is arranged on the top cover sinking platform and penetrates through the top cover sinking platform, a recessed area is defined by the top cover sinking platform, and the upper plastic is arranged in the recessed area.

According to some embodiments of the utility model, the radial outer side of the upper plastic is filled with sealant at the fit clearance between the pole and the upper plastic, between the upper plastic and the top cover sinking table.

According to some embodiments of the utility model, the upper plastic comprises an upper plastic body disposed in the recessed area and an upper plastic extension connected to the upper plastic body, the upper plastic extension extending into the top cover aperture.

According to some embodiments of the utility model, the pole body has a pole recess, the lower plastic extension is clamped with the pole recess, the height of the lower plastic extension beyond the top cover sinking table in the direction of the upper plastic is not lower than the height of the sealant beyond the top cover sinking table, and the height of the sealant beyond the top cover sinking table is higher than the height of the contact surface between the upper plastic and the pole body.

According to some embodiments of the utility model, the lower plastic body has a first concave surface adapted to be attached to the top cover sinking platform, and the clamping fixing position of the first clamping structure and the second clamping structure is located at one side of the first concave surface facing the top cover.

An energy storage device according to another embodiment of the present utility model includes the above-described top cap assembly.

According to the energy storage device disclosed by the embodiment of the utility model, the top cover component is clamped and fixed with the first clamping structure of the lower plastic and the second clamping structure of the pole, so that the lower plastic can be fixed on the pole, and is not easy to fall off when the pole is fixedly connected with the current collecting disc, the assembly operation of the top cover component is simplified, and the assembly operation of the energy storage device is further simplified.

According to some embodiments of the utility model, the energy storage device further comprises a current collecting tray, the pole has a pole hole, the current collecting tray comprises a current collecting tray body and a current collecting tray protruding portion, the current collecting tray body is located on one side of the lower plastic, which is away from the top cover, the current collecting tray protruding portion is connected with the current collecting tray body, the current collecting tray protruding portion extends towards the direction of the pole relative to the current collecting tray body, and the current collecting tray protruding portion is suitable for being inserted into the pole hole and welded and fixed with the hole wall of the pole hole.

According to some embodiments of the utility model, the post further has an end hole located at an end of the post hole remote from the collector plate, and the end hole communicates with the post hole, the end hole having a diameter greater than a diameter of the post hole.

According to some embodiments of the utility model, the lower plastic body has a lower plastic lower surface facing away from the top cover, a second concave surface concave toward the direction of the top cover is provided on the lower plastic lower surface, the current collecting plate body has a current collecting plate upper surface opposite to the lower plastic body, a distance between the current collecting plate upper surface and the second concave surface is greater than a concave depth of the second concave surface relative to the lower plastic lower surface, and an inner end surface of the pole is located between the current collecting plate upper surface and the second concave surface.

According to an embodiment of the utility model, the electric equipment comprises the energy storage device.

According to the electric equipment provided by the embodiment of the utility model, the top cover component of the energy storage device is clamped and fixed with the first clamping structure of the lower plastic and the second clamping structure of the pole, so that the lower plastic is not easy to fall off from the pole, the assembly operation of the top cover component is simplified, and the assembly operation of the energy storage device and the electric equipment is further simplified.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is an application scenario diagram of an energy storage device according to an embodiment of the present utility model;

fig. 2 is a perspective view of a top cap assembly according to an embodiment of the present utility model;

FIG. 3 is a top view of a top cap assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of A-A of FIG. 3;

FIG. 5 is an enlarged partial schematic view at B in FIG. 4;

fig. 6 is a front view of the top cap assembly according to the embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a top cover according to an embodiment of the utility model;

FIG. 8 is a top view of a top cover according to an embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional view of C-C of FIG. 8;

fig. 10 is a perspective view of a pole according to an embodiment of the present utility model;

Fig. 11 is a perspective view of a pole in accordance with an embodiment of the present utility model at another view angle;

fig. 12 is a front view of a top cover according to an embodiment of the present utility model;

FIG. 13 is a schematic perspective view of a lower plastic according to an embodiment of the utility model;

FIG. 14 is a partially enlarged schematic view of FIG. 13 at D;

FIG. 15 is a top view of a lower plastic according to an embodiment of the present utility model;

FIG. 16 is a schematic cross-sectional view of E-E of FIG. 15;

fig. 17 is a front view of a lower plastic according to an embodiment of the present utility model.

Reference numerals:

the energy storage system 400, the high-voltage cable 410, the first electric energy conversion device 420, the second electric energy conversion device 430 and the energy storage device 100;

The top cap assembly 10, the top cap 1, the top cap body portion 11, the top cap counter 12, the top cap hole 13, the recessed area 14, the upper plastic 2, the upper plastic body 21, the upper plastic extension 22, the lower plastic 3, the lower plastic body 31, the first recessed surface 311, the second recessed surface 312, the lower plastic lower surface 313, the lower plastic extension 32, the lower plastic hole 33, the first clamping structure 34, the pole 4, the pole body 41, the pole extension 42, the pole hole 43, the second clamping structure 44, the pole recess 45, the end hole 46, the current collecting tray 5, the current collecting tray body 51, the current collecting tray upper surface 511, the current collecting tray protrusion 52, the sealant 6.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Because of the strong timeliness and space properties of energy required by people, in order to reasonably utilize the energy and improve the utilization rate of the energy, one energy form needs to be stored by one medium or equipment and then converted into another energy form, and the energy is released in a specific energy form based on future application. At present, the main way of generating green electric energy is to develop green energy sources such as photovoltaic, wind power and the like to replace fossil energy sources.

At present, the generation of green electric energy generally depends on photovoltaic, wind power, water potential and the like, but wind energy, solar energy and the like generally have the problems of strong intermittence and large fluctuation, which can cause unstable power grid, insufficient peak electricity consumption, too much electricity consumption and unstable voltage can cause damage to the electric power, so that the problem of 'wind abandoning and light abandoning' possibly occurs due to insufficient electricity consumption requirement or insufficient power grid acceptance, and the problem needs to be solved by relying on energy storage. The energy is converted into other forms of energy through physical or chemical means and is stored, the energy is converted into electric energy when needed and released, in short, the energy storage is similar to a large-scale 'charge pal', the electric energy is stored when the photovoltaic and wind energy are sufficient, and the stored electric power is released when needed.

Taking electrochemical energy storage as an example, the scheme provides an energy storage device, wherein a group of chemical batteries are arranged in the energy storage device, chemical elements in the batteries are mainly used as energy storage media, and the charge and discharge process is accompanied with chemical reaction or change of the energy storage media.

The present energy storage (i.e. energy storage) application scenario is comparatively extensive, including aspects such as power generation side energy storage, electric wire netting side energy storage and power consumption side energy storage, and the kind of corresponding energy storage device includes:

(1) The large energy storage power station applied to the wind power and photovoltaic power station side can assist renewable energy sources to generate electricity to meet grid-connected requirements, and meanwhile, the utilization rate of the renewable energy sources is improved; the energy storage power station is used as a high-quality active/reactive power regulating power supply in a power supply side, so that the load matching of electric energy in time and space is realized, the capacity of absorbing renewable energy sources is enhanced, the instantaneous power change is reduced, the impact on a power grid is reduced, the problem of generating and absorbing new energy sources is solved, and the energy storage power station has great significance in the aspects of standby of a power grid system, relieving peak load power supply pressure and peak regulation and frequency modulation;

(2) The energy storage container applied to the power grid side has the functions of mainly peak regulation, frequency modulation and power grid blocking and peak regulation relieving, and can realize peak clipping and valley filling of the power consumption load, namely the energy storage battery is charged when the power consumption load is low, and the stored electric quantity is released in the peak period of the power consumption load, so that the balance between power production and power consumption is realized;

(3) The small energy storage cabinet applied to the electricity utilization side has the main functions of spontaneous electricity utilization, peak Gu Jiacha arbitrage, capacity cost management and power supply reliability improvement. According to the different application scenes, the electricity-side energy storage can be divided into an industrial and commercial energy storage cabinet, a household energy storage device, an energy storage charging pile and the like, and is generally matched with the distributed photovoltaic. The energy storage can be used by industrial and commercial users for valley peak price difference arbitrage and capacity cost management. In the electric power market implementing peak-valley electricity price, the energy storage system is charged when the electricity price is low, and the energy storage system is discharged when the electricity price is high, so that peak-valley electricity price difference arbitrage is realized, and the electricity cost is reduced.

In addition, the energy storage system is suitable for two industrial enterprises with electricity price, can store energy when electricity is used in low valley and discharge the energy when the electricity is used in peak load, so that peak power and the declared maximum demand are reduced, and the purpose of reducing the capacity electricity fee is achieved. The household photovoltaic distribution and storage can improve the spontaneous self-use level of the electric power. Due to high electricity prices and poor power supply stability, the photovoltaic installation requirements of users are pulled. Considering that the photovoltaic power generation is performed in daytime, and the load of a user is generally higher at night, the photovoltaic power can be better utilized through configuration of energy storage, the spontaneous self-use level is improved, and meanwhile the power consumption cost is reduced. In addition, the fields of communication base stations, data centers and the like need to be configured with energy storage for standby power.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an energy storage system 400 according to an embodiment of the application, and the embodiment of fig. 1 of the application is illustrated by taking a power generation/distribution side shared energy storage scenario as an example, and the energy storage device 100 of the application is not limited to the power generation/distribution side energy storage scenario.

The present application provides an energy storage system 400, the energy storage system 400 comprising: the high-voltage cable 410, the first electric energy conversion device 420, the second electric energy conversion device 430 and the energy storage device 100 provided by the application, under the condition of power generation, the first electric energy conversion device 420 and the second electric energy conversion device 430 are used for converting other forms of energy into electric energy, are connected with the high-voltage cable 410 and are supplied to the power utilization side of a distribution network for use, when the power utilization load is lower, the first electric energy conversion device 420 and the second electric energy conversion device 430 store multiple generated electric energy into the energy storage device 100 when the power generation is excessive, the wind abandoning and the light abandoning rate are reduced, and the problem of power generation and consumption of new energy is improved; when the power consumption load is high, the power grid gives an instruction, the electric quantity stored by the energy storage device 100 is cooperated with the high-voltage cable 410 to transmit electric energy to the power consumption side for use in a grid-connected mode, so that various services such as peak regulation, frequency modulation and standby are provided for the operation of the power grid, the peak regulation effect of the power grid is fully exerted, peak clipping and valley filling of the power grid are promoted, and the power supply pressure of the power grid is relieved.

Optionally, the first and second power conversion devices 420 and 430 may convert at least one of solar energy, light energy, wind energy, heat energy, tidal energy, biomass energy, mechanical energy, etc. into electric energy.

The number of the energy storage devices 100 may be plural, and the plurality of energy storage devices 100 may be connected in series or parallel, and the plurality of energy storage devices 100 may be supported by a separator (not shown) and electrically connected. In the present embodiment, "a plurality of" means two or more. The energy storage device 100 may further be provided with an energy storage box for accommodating the energy storage device 100.

Alternatively, the energy storage device 100 may include, but is not limited to, a battery cell, a battery module, a battery pack, a battery system, and the like. The practical application form of the energy storage device 100 provided in the embodiment of the present application may be, but is not limited to, the listed products, and may be other application forms, and the embodiment of the present application does not strictly limit the application form of the energy storage device 100. The embodiment of the present application will be described by taking the energy storage device 100 as a multi-core battery. When the energy storage device 100 is a single battery, the energy storage device 100 is a cylindrical battery.

The energy storage device 100 may also be applied to a home energy storage scenario. The powered device includes an energy storage device 100, and the energy storage device 100 provides electric energy for the powered device. The electric equipment comprises, but is not limited to, street lamps, industrial equipment, household appliances and the like. The electric equipment of the embodiment of the application can also comprise, but is not limited to, large-scale equipment such as a wind power station, industrial and commercial power supply equipment, a power supply base station and the like.

The energy storage device 100 includes a case (not shown), a top cap assembly 10, and an electrode assembly (not shown).

The header assembly 10 according to the embodiment of the present utility model is described in detail below with reference to fig. 2 to 17.

Referring to fig. 2-6, a cap assembly 10 according to an embodiment of the present utility model may include a cap 1, an upper plastic 2, a lower plastic 3, and a pole 4.

Referring to fig. 7-9, a top cover hole 13 is formed in the top cover 1, the top cover hole 13 is a through hole and penetrates through the top cover 1 along the thickness direction of the top cover 1, and in combination with fig. 2-6, the top cover hole 13 is used for allowing the pole 4 to pass through, so that the pole 4 is connected and fixed with a later-mentioned current collecting disc 5.

The upper plastic 2 is located at one side of the top cover 1, the lower plastic 3 is located at one side of the top cover 1 away from the upper plastic 2, and as shown in fig. 4-5, the upper plastic 2 is located at the upper side of the top cover 1, and the lower plastic 3 is located at the lower side of the top cover 1. Referring again to fig. 13-16, the lower plastic 3 has a first clamping structure 34.

Referring to fig. 4-5, 7-9 and 11-12, the pole 4 passes through the top cover hole 13, and the pole 4 has a second clamping structure 44, and the first clamping structure 34 is clamped and fixed with the second clamping structure 44, so that the lower plastic 3 is clamped on the pole 4, and the lower plastic 3 and the pole 4 are difficult to separate under the condition that no disassembly force is applied, so that the lower plastic 3 is difficult to drop from the pole 4 when the pole 4 is fixedly connected with the current collecting disc 5, the step of picking up the lower plastic 3 by a user is saved, and the lower plastic 3 is not held by a hand, so that the labor is saved.

In some embodiments of the present utility model, the lower plastic 3 includes a lower plastic body 31 and a lower plastic extension 32, the lower plastic body 31 is located on a side of the top cover 1 facing away from the upper plastic 2, the first clamping structure 34 is disposed on an inner sidewall of the lower plastic extension 32, the lower plastic extension 32 is connected to the lower plastic body 31, the lower plastic extension 32 extends into the top cover hole 13, and the second clamping structure 44 is disposed on a portion of the pole 4 penetrating through the lower plastic extension 32.

In the related art, when the pole is fixedly connected with the current collecting disc, the lower plastic is easy to fall off, and the complexity of assembly operation is increased. According to the top cover assembly 10 of the embodiment of the utility model, the lower plastic extension part 32 is inserted into the top cover hole 13 and the first clamping structure 34 of the lower plastic extension part 32 is clamped and fixed with the second clamping structure 44 of the pole 4, so that the lower plastic 3 is not easy to fall off from the pole 4, better stability can be maintained, the step of picking up the lower plastic 3 by a user is saved, the lower plastic 3 is not held by a hand, labor is saved, and the assembly operation of the top cover assembly 10 is simplified. Meanwhile, the lower plastic extension part 32 stretches into the top cover hole 13 to prevent the sealant from penetrating into the pole 4, so that the sealing performance between the lower plastic 3 and the pole 4 is improved.

In some embodiments of the present utility model, one of the first clamping structure 34 and the second clamping structure 44 is a protrusion structure, and the other is a groove structure adapted to the protrusion structure. For example, in the embodiment shown in fig. 4-5, the first clamping structure 34 is a protruding structure, and the second clamping structure 44 is a groove structure, and the groove structure is adapted to the protruding structure, so as to ensure that the clamping is firm and not loose. In the embodiment not shown in the drawings, the second clamping structure 44 may be a protruding structure, and the first clamping structure 34 may be a groove structure adapted to the protruding structure. The protruding structure and the groove structure processing are comparatively simple, and protruding structure and groove structure joint, gomphosis back, firm in connection, under the condition that does not exert the dismantlement power, lower plastic 3 is difficult to separate with utmost point post 4, like this, when utmost point post 4 is connected fixedly with current collecting plate 5, lower plastic 3 is difficult for coming off from utmost point post 4.

In some embodiments of the present utility model, the groove structure is a complete ring structure, the protrusion structure is a complete or multi-segment structure, and the total length of the protrusion structure is not greater than that of the groove structure, so that the protrusion structure and the groove structure are more freely matched, so that the assembly of the lower plastic 3 and the pole 4 is more freely, and even if the lower plastic 3 rotates around the axis by a certain angle, the protrusion structure can be clamped in the groove structure all the time. Referring to the example of fig. 11-12, the second clamping structure 44 is a groove structure, the groove structure is located on the pole 4, and the groove structure is circumferentially arranged along the outer Zhou Zhengjuan of the pole 4, and referring to the example of fig. 13, the first clamping structure 34 is a protrusion structure, the protrusion structure is located on the lower plastic 3, and the protrusion structure is a two-stage structure, the two-stage structure is arranged along the outer Zhou Fensan of the lower plastic 3. Of course, the protruding structure may also be a dot structure arranged along the outer part Zhou Fensan of the lower plastic 3, a whole annular structure arranged along the outer part Zhou Zhengjuan of the lower plastic 3, or a combination of dot and segment structures arranged along the outer part Zhou Fensan of the lower plastic 3.

In some embodiments of the present utility model, the pole 4 includes a pole body 41 and a pole extension portion 42, the pole body 41 is located on a side of the upper plastic 2 facing away from the top cover 1, the pole extension portion 42 is connected to the pole body 41, and the pole extension portion 42 passes through the top cover hole 13 and is fixedly connected to the current collecting disc 5, and the second clamping structure 44 is disposed on the pole extension portion 42. Referring to the example of fig. 11-12, the second snap feature 44 is a groove feature that is circumferentially disposed along the outer Zhou Zhengjuan of the pole extension 42. The pole body 41 is located on the upper side of the upper plastic 2, and the pole extension 42 passes through the top cover hole 13 from top to bottom until the pole body 41 abuts against the upper surface of the upper plastic 2.

In some embodiments of the present utility model, referring to fig. 7-9, the top cover 1 includes a first surface and a second surface, a portion of the first surface is recessed in a direction of the second surface to form a top cover sink deck 12, a top cover hole 13 is formed on the top cover sink deck 12, the top cover hole 13 penetrates through the top cover sink deck 12 along a thickness direction of the top cover sink deck 12, a recessed area 14 is defined by the top cover sink deck 12, and the upper plastic 2 is disposed in the recessed area 14. In fig. 5 to 7 and 9, the first surface is the upper surface of the top cover 1, and the second surface is the lower surface of the top cover 1.

In other words, the area of the top cover 1 except the top cover sinking platform 12 is formed as the top cover body 11, the top cover body 11 is in a ring-shaped structure, the top cover sinking platform 12 is connected to the ring-shaped inner side of the top cover body 11, the top cover sinking platform 12 is recessed relative to the top cover body 11 in the direction of the downward plastic 3 to form the recessed area 14, that is, the top cover sinking platform 12 is recessed downward relative to the top cover body 11, and the upper plastic 2 is disposed in the recessed area 14. Thus, the overall axial dimension of the head cover assembly 10 is small, saving space, and facilitating a reduction in the overall height dimension of the energy storage device 100 when the head cover assembly 10 is applied to the end of the energy storage device 100.

In some embodiments of the present utility model, the gap between the pole 4 and the upper plastic 2, between the upper plastic 2 and the top cover sinking table 12, and radially outside the upper plastic 2 is filled with the sealant 6. In the related art, the sealing ring is arranged at the matching position of the upper plastic and the polar post and the lower plastic and the polar post to realize sealing, the sealing ring is generally a fluorine rubber ring, the cost is high, and the whole structure is not compact enough after the sealing ring is arranged. The sealant 6 may be a hot melt adhesive. The lower plastic extension 32 stretches into the top cover hole 13 to prevent the sealant 6 from penetrating into the pole 4, so that the sealing performance between the lower plastic 3 and the pole 4 is improved.

In some embodiments of the present utility model, the upper plastic 2 includes an upper plastic body 21 and an upper plastic extension 22, the upper plastic body 21 is disposed in the recessed area 14, the upper plastic extension 22 is connected to the upper plastic body 21, and the upper plastic extension 22 extends into the top cover hole 13.

In some embodiments of the present utility model, the lower plastic 3 has a lower plastic hole 33, the lower plastic hole 33 is a through hole and penetrates the lower plastic 3 along the thickness direction of the lower plastic 3, the first clamping structure 34 is disposed on the wall of the lower plastic hole 33, and the second clamping structure 44 is disposed on the portion of the pole 4 located in the lower plastic hole 33.

In some embodiments of the present utility model, as shown in fig. 4-5, the pole 4 includes a pole body 41 and a pole extension portion 42, the pole body 41 is located on the upper side of the upper plastic 2, the pole extension portion 42 is connected to the pole body 41, and the second clamping structure 44 is disposed on the pole extension portion 42.

The upper plastic extension 22 extends into the top cover hole 13, the upper plastic extension 22 is formed with an upper plastic hole on the inside, the lower plastic extension 32 extends into the upper plastic hole, the lower plastic extension 32 is formed with a lower plastic hole 33 on the inside, and the pole extension 42 extends into the lower plastic hole 33. After the first clamping structure 34 of the lower plastic 3 is matched with the second clamping structure 44 of the pole 4 in a clamping way, the upper plastic body 21 and the top cover 1 are clamped between the pole body 41 and the lower plastic body 31, and the top cover 1, the pole 4, the upper plastic 2 and the lower plastic 3 are fixed into a whole.

In some embodiments of the present utility model, referring to fig. 4-5, the pole body 41 has a pole recess 45, the lower plastic extension 32 is clamped with the pole recess 45, and the height of the lower plastic extension 32 above the top cover sinking platform 12 in the direction of the upper plastic 2 is not lower than the height of the sealant 6 above the top cover sinking platform 12. Referring to fig. 4-5, the height of the lower plastic extension 32 upwardly above the top cover counter 12 is no less than the height of the sealant 6 upwardly above the top cover counter 12. Thus, the lower plastic extension 32 acts as a barrier to the sealant 6, preventing the sealant 6 from penetrating beyond the lower plastic extension 32 to the pole 4 and the current collecting plate 5.

In some embodiments of the present utility model, referring to fig. 4-5, the height of the sealant 6 above the top cover sinking platform 12 is higher than the height of the contact surface between the upper plastic 2 and the pole body 41, so that external moisture cannot enter the energy storage device 100 through the contact surface between the upper plastic 2 and the pole body 41, and good tightness between the pole 4 and the upper plastic 2 can be ensured.

In some embodiments of the present utility model, referring to fig. 4-5, the lower plastic body 31 has a first concave surface 311, the first concave surface 311 is adapted to be attached to the top cover sink 12, and the fastening location of the first fastening structure 34 and the second fastening structure 44 is located on a side of the first concave surface 311 facing the top cover 1. In other words, the fastening position of the first fastening structure 34 and the second fastening structure 44 is higher than the first concave surface 311. Therefore, a certain axial span is arranged between the clamping and fixing position and the first concave surface 311, so that the clamping and connection between the lower plastic 3 and the pole 4 is firmer.

Alternatively, the top cover 1 may be an integral positive explosion-proof steel cover, and the pole 4 is a positive pole.

An energy storage device 100 according to another embodiment of the present utility model includes the top cover assembly 10 of the above-described embodiment.

According to the energy storage device 100 of the embodiment of the utility model, the top cover assembly 10 of the energy storage device can fix the lower plastic 3 on the pole 4 by clamping and fixing the first clamping structure 34 of the lower plastic 3 and the second clamping structure 44 of the pole 4, so that the lower plastic 3 is not easy to fall off when the pole 4 is fixedly connected with the current collecting disc 5, the assembly operation of the top cover assembly 10 is simplified, and the assembly operation of the energy storage device 100 is simplified.

In some embodiments of the present utility model, referring to fig. 4-6, the energy storage device 100 further includes a current collecting plate 5, where the current collecting plate 5 is disposed on a side of the lower plastic 3 facing away from the top cover 1, and the pole 4 is fixedly connected to the current collecting plate 5. Referring again to fig. 10-11, the pole 4 has a pole hole 43, the collector plate 5 includes a collector plate body 51 and a collector plate protrusion 52, the collector plate body 51 is located on a side of the lower plastic 3 facing away from the top cover 1, i.e., the collector plate body 51 is located on a lower side of the lower plastic 3, the collector plate protrusion 52 is connected with the collector plate body 51, the collector plate protrusion 52 extends in a direction of the pole 4 relative to the collector plate body 51, i.e., extends upward, and the collector plate protrusion 52 is adapted to be inserted into the pole hole 43.

Alternatively, the pole 4 and the collector plate 5 can be connected and fixed by laser welding, so that the fixation is firm and reliable and the operation mode is simple. Specifically, the current collecting plate boss 52 may be welded to the hole wall of the post hole 43.

In some embodiments of the present utility model, referring to fig. 5 and 11, the pole 4 further has an end hole 46, the end hole 46 is located at an end of the pole hole 43 away from the current collecting plate 5, and the end hole 46 communicates with the pole hole 43, and the diameter of the end hole 46 is larger than that of the pole hole 43, so that when the current collecting plate protrusion 52 is suitable for being inserted into the pole hole 43, the current collecting plate protrusion 52 is not easy to interfere with other structures of the pole 4, which is beneficial to reducing assembly difficulty.

In some embodiments of the present utility model, referring to fig. 5-6, the lower plastic body 31 has a lower plastic lower surface 313 facing away from the top cover 1, a second concave surface 312 is formed on the lower plastic lower surface 313 and concave toward the direction of the top cover 1, the current collecting plate body 51 has a current collecting plate upper surface 511 opposite to the lower plastic body 31, and a distance between the current collecting plate upper surface 511 and the second concave surface 312 is greater than a concave depth of the second concave surface 312 relative to the lower plastic lower surface 313. Specifically, the distance between the upper surface 511 of the current collecting plate and the second concave surface 312 is H1, and the concave depth of the second concave surface 312 relative to the lower plastic lower surface 313 is H2, where H1 > H2, so that the lower plastic 3 is separated from the current collecting plate 5, and the current collecting plate 5 only needs to be matched with the pole 4, which is beneficial to reducing the assembly difficulty.

Further, the inner end surface of the pole 4 is located between the collector plate upper surface 511 and the second recessed surface 312. The sum of the distance between the lower end surface of the pole 4 and the upper surface 511 of the current collecting plate, and the distance between the lower end surface of the pole 4 and the second concave surface 312 is H1, which is the inner end surface of the pole 4.

The energy storage device 100 according to the embodiment of the utility model includes a top cover assembly 10 and a current collecting plate 5, wherein the top cover assembly 10 includes a top cover 1, an upper plastic 2, a lower plastic 3 and a pole 4, the top cover 1, the pole 4, the upper plastic 2 and the lower plastic 3 are fixed into a whole by the convex structure of the lower plastic 3 and the concave structure of the pole 4 in a clamping fit manner, then a layer of hot melt adhesive is coated on the assembly gaps between the pole 4 and the upper plastic 2 and between the pole 4 and the top cover 1 for sealing, and finally the pole 4 and the current collecting plate 5 are connected and fixed to form the energy storage device 100.

A powered device according to a further aspect of the present utility model includes the energy storage device 100 of the above embodiment.

Alternatively, the powered device may be an energy storage system, a vehicle, a machine tool, a household appliance, or the like.

According to the electric equipment provided by the embodiment of the utility model, the top cover assembly 10 of the energy storage device 100 can fix the lower plastic 3 on the pole 4 by clamping and fixing the first clamping structure 34 of the lower plastic 3 and the second clamping structure 44 of the pole 4, so that the lower plastic 3 is not easy to fall off from the pole 4 when the pole 4 is fixedly connected with the current collecting disc 5, the assembly operation of the top cover assembly 10 is simplified, and the assembly operation of the energy storage device 100 and the electric equipment is further simplified.

In the description of the present utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (12)

1. A header assembly (10), comprising:

The device comprises a top cover (1), wherein a top cover hole (13) penetrating along the thickness direction of the top cover (1) is formed in the top cover (1);

The upper plastic (2) is positioned on one side of the top cover (1);

The lower plastic (3), lower plastic (3) include lower plastic body (31) and lower plastic extension (32), lower plastic body (31) are located top cap (1) deviate from one side of last plastic (2), lower plastic extension (32) with lower plastic body (31) link to each other, lower plastic extension (32) stretch into in top cap hole (13), have first joint structure (34) on the inside wall of lower plastic extension (32);

the pole (4), pole (4) pass top cap hole (13), just the portion of pole (4) wearing to locate in lower plastic extension (32) is gone up has second joint structure (44), first joint structure (34) with second joint structure (44) joint is fixed.

2. The top cap assembly (10) according to claim 1, wherein the pole (4) comprises a pole body (41) and a pole extension (42), the pole body (41) is located on a side of the upper plastic (2) facing away from the top cap (1), the pole extension (42) is connected with the pole body (41), and the pole extension (42) passes through the top cap hole (13), and the second clamping structure (44) is arranged on the pole extension (42).

3. The top cover assembly (10) according to claim 2, wherein the top cover (1) comprises a first surface and a second surface, a part of the first surface is recessed in a direction of the second surface to form a top cover sinking table (12), the top cover hole (13) is formed in the top cover sinking table (12) and penetrates through the top cover sinking table (12), a recessed area (14) is defined by the top cover sinking table (12), and the upper plastic (2) is arranged in the recessed area (14).

4. A cap assembly (10) according to claim 3, wherein the fitting gap between the pole (4) and the upper plastic (2), between the upper plastic (2) and the cap sinking table (12) is filled with a sealing compound (6) radially outside the upper plastic (2).

5. The header assembly (10) of claim 4, wherein the upper plastic (2) includes an upper plastic body (21) and an upper plastic extension (22), the upper plastic body (21) being disposed within the recessed region (14), the upper plastic extension (22) being connected to the upper plastic body (21), the upper plastic extension (22) extending into the header aperture (13).

6. The top cap assembly (10) of claim 4 or 5, wherein the pole body (41) has a pole recess (45), the lower plastic extension (32) is clamped with the pole recess (45), the height of the lower plastic extension (32) beyond the top cap sinking stage (12) toward the upper plastic (2) is not lower than the height of the sealant (6) beyond the top cap sinking stage (12), and the height of the sealant (6) beyond the top cap sinking stage (12) is higher than the height of the contact surface between the upper plastic (2) and the pole body (41).

7. The top cover assembly (10) according to claim 3, wherein the lower plastic body (31) is provided with a first concave surface (311) which is suitable for being attached to the top cover sinking table (12), and the clamping fixing position of the first clamping structure (34) and the second clamping structure (44) is positioned on one side of the first concave surface (311) which faces the top cover (1).

8. An energy storage device (100) comprising the cap assembly (10) of any one of claims 1-7.

9. The energy storage device (100) according to claim 8, wherein the energy storage device (100) further comprises a current collecting tray (5), the pole (4) is provided with a pole hole (43), the current collecting tray (5) comprises a current collecting tray body (51) and a current collecting tray protrusion (52), the current collecting tray body (51) is located at one side of the lower plastic (3) facing away from the top cover (1), the current collecting tray protrusion (52) is connected with the current collecting tray body (51), the current collecting tray protrusion (52) extends towards the direction of the pole (4) relative to the current collecting tray body (51), and the current collecting tray protrusion (52) is suitable for being inserted into the pole hole (43) and welded and fixed with the hole wall of the pole hole (43).

10. The energy storage device (100) according to claim 9, wherein the pole (4) further has an end hole (46), the end hole (46) being located at an end of the pole hole (43) remote from the collector plate (5), and the end hole (46) being in communication with the pole hole (43), the diameter of the end hole (46) being larger than the diameter of the pole hole (43).

11. The energy storage device (100) according to claim 9, wherein the lower plastic body (31) has a lower plastic lower surface (313) facing away from the top cover (1), the lower plastic lower surface (313) is provided with a second concave surface (312) concave towards the direction in which the top cover (1) is located, the current collecting plate body (51) has a current collecting plate upper surface (511) opposite to the lower plastic body (31), a distance between the current collecting plate upper surface (511) and the second concave surface (312) is greater than a concave depth of the second concave surface (312) relative to the lower plastic lower surface (313), and an inner end surface of the pole (4) is located between the current collecting plate upper surface (511) and the second concave surface (312).

12. A powered device, characterized by comprising an energy storage device (100) according to any of claims 8-11.