CN213636192U - Battery unit and uninterruptible power supply - Google Patents

Abstract

The utility model provides a battery unit and uninterrupted power source, battery unit include the casing, nested in the inboard insulating layer of casing, wrapped up in insulating intraformational electric core group, arrange in the circuit board of the electrode tip of electric core group and being located the insulating cover in the circuit board outside, electric core group with the circuit board electricity is connected, electric core group includes a pair of electric core unit, every electric core unit is formed with buckle structure respectively in the both sides along its width direction, electric core unit includes first electric core unit and the second electric core unit of the range upon range of setting of its thickness direction, first electric core unit with second electric core unit passes through buckle structure interconnect can not warp a pair of electric core unit under the exogenic action to make battery unit stable in structure, stable performance.

Description

Battery unit and uninterruptible power supply

Technical Field

The present disclosure relates to the field of battery technologies, and in particular, to a battery unit and an uninterruptible power supply including the battery unit.

Background

The UPS of the wind generating set is an important part for ensuring the set to have a low-penetration function, and when the voltage of a power grid suddenly drops, the UPS continuously supplies power so that the wind generating set has the capacity of keeping the wind generating set from being disconnected for a period of time. Once power grid fluctuation occurs, if the fan does not have low voltage ride through, the whole fan is disconnected at the same time, and larger fluctuation of the power grid is caused, so that a large-area power failure accident is caused. Meanwhile, when the power grid fails, the wind turbine generator UPS continuously supplies power to the system, and the danger of fan runaway is avoided. The UPS plays an important role in stable operation of the fan and accident avoidance, and the good function of the UPS and the sufficient capacity of the battery of the UPS are guaranteed to be of great importance to the unit.

The UPS system of the wind generating set comprises three parts, namely a cabin backup UPS battery, a 230VAC alternating current UPS and a tower-based UPS power supply. For example, the main part of the cabin backup UPS battery is a lead-acid battery in a battery box, and the battery box is mainly responsible for supplying power to a variable pitch system when a power grid is powered off, so that the safe pitch return of blades is realized, and the runaway is avoided.

Therefore, how to provide an uninterruptible power supply with stable performance is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

A primary object of the present disclosure is to provide a battery cell and an uninterruptible power supply, in which the performance of the battery cell is stable.

In view of the above purpose, the present disclosure provides the following technical solutions:

one aspect of the present disclosure provides a battery unit, including the casing, nested in the inboard insulating layer of casing, wrapped up in insulating intraformational electric core group, arrange in the circuit board of the electrode tip of electric core group and being located the insulating cover in the circuit board outside, electric core group with the circuit board electricity is connected, electric core group includes the electric core unit of a pair of series connection, every electric core unit is formed with buckle structure respectively in the both sides along its width direction, electric core unit includes first electric core unit and the second electric core unit of the range upon range of setting along its thickness direction, first electric core unit with second electric core unit passes through buckle structure interconnect.

In an exemplary embodiment of the disclosure, the buckle structure includes a convex buckle and a rotatable outward-turning buckle respectively formed on two sides of the cell unit along the width direction thereof, the outward-turning buckle of the first cell unit is buckled with the convex buckle of the second cell unit, and the convex buckle of the first cell unit is buckled with the outward-turning buckle of the second cell unit.

Optionally, the first cell unit and the second cell unit are connected in series with each other, the number of the cell groups is at least two, at least two of the cell groups are stacked in the thickness direction of the casing and connected in series with each other, and a first foam is arranged between two adjacent cell groups; and/or second foam is arranged between two sides of the insulating layer in the width direction and the shell.

Further, the casing includes assorted upper cover and lower cover, the upper cover is in the one end of the thickness direction of casing is provided with first opening, lower cover detachably connects in first opening part, the upper cover is in the length direction's of casing one end is provided with the second opening, the circuit board sets up the second opening part.

In another exemplary embodiment of the present disclosure, the insulating layer is formed at a first end in a length direction thereof with a first through hole for receiving a positive electrode and a second through hole for receiving a negative electrode, the first through hole and the second through hole being spaced apart from each other.

Optionally, a third through hole and a fourth through hole are formed in the circuit board at positions corresponding to the positive electrode and the negative electrode of the cell unit, a lead post is arranged at the third through hole corresponding to the first cell unit, and the lead post is connected with a wire at the fourth through hole corresponding to the second cell unit through a connecting wire, so that the first cell unit and the second cell unit are connected in series.

Further, the battery cell unit is a lithium iron phosphate battery.

In another aspect of the present disclosure, an uninterruptible power supply is provided, which includes the battery unit as described above, the battery unit is at least two and is stacked.

In another exemplary embodiment of the present disclosure, the housing of the battery unit is formed at both sides in the width direction thereof with a rotatable flange and a threaded post, the threaded post is formed with a threaded hole for a fastener to pass through, the flange of one battery unit is formed with a flange through hole at a position corresponding to the threaded hole of the adjacent battery unit, and the adjacent battery units are connected together through the threaded hole and the flange through hole.

Further, the flanging is arranged at the first end of the shell in the thickness direction, and the threaded column is arranged close to the second end of the shell in the thickness direction.

Optionally, the uninterruptible power supply includes a cabinet for accommodating the battery unit, and the cabinet is provided with a ventilation hole.

The battery unit and the uninterruptible power supply provided by the disclosure have at least the following beneficial effects: the utility model provides a battery unit includes that a pair of electric core unit and a pair of electric core unit are connected through buckle structure, and a pair of electric core unit can not warp under the exogenic action to make battery unit stable in structure, stable performance.

Drawings

The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a structural diagram of a battery cell provided in an exemplary embodiment of the present disclosure.

Fig. 2 is an exploded view of the battery cell of fig. 1.

Fig. 3 is a structural view of the circuit board provided with the lead post and the connection lead in fig. 2.

Fig. 4 is a block diagram of an uninterruptible power supply according to an exemplary embodiment of the disclosure.

Description of reference numerals:

10. a battery cell; 110. An upper cover;

111. a threaded post; 112. A flanging through hole;

113. flanging; 120. An insulating layer;

121. a first through hole; 122. A second through hole;

130. the electric core group; 140. First foam;

150. second foam; 160. A lower cover;

170. a circuit board; 171. A third through hole;

172. a fourth via hole; 180. An insulating cover;

191. a lead post; 192. And connecting the lead.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects of the present disclosure are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The present disclosure provides a battery unit 10, and the battery unit 10 may be suitable for an uninterruptible power supply of a wind turbine generator set.

Referring to fig. 1 and 2, the battery cell 10 may include a case, an insulating layer 120 nested inside the case, a core pack 130 wrapped inside the insulating layer 120, a circuit board 170 disposed at electrode terminals of the core pack 130, and an insulating cover 180 located outside the circuit board 170, wherein the core pack 130 is electrically connected to the circuit board 170. The battery pack 130 includes a pair of battery cell units connected in series, and each battery cell unit is formed with a snap structure at both sides in a width direction thereof, respectively. For example, this buckle structure can be for forming rotatable flanging buckle and the convex part buckle respectively in the width direction both sides of electric core unit, and electric core unit includes first electric core unit and the second electric core unit of its range upon range of setting of thickness direction, and the flanging buckle of first electric core unit can be buckled with the convex part buckle of second electric core unit on, and the convex part buckle of second electric core unit is buckled the joint with the flanging buckle of first electric core unit.

The utility model provides a battery unit 10 includes first electric core unit and the second electric core unit of range upon range of setting and establishing ties each other along its thickness direction, and first electric core unit and second electric core unit are connected through convex part buckle and flanging buckle, can keep the distance between first electric core unit and the second electric core unit, prevent that battery unit 10 from taking place to warp under the exogenic action, strengthen the structural strength of electric core unit to improve battery unit 10's life. Furthermore, the detachable connection formed by the convex part buckle and the flanging buckle enables the disassembly, assembly and maintenance to be fast, and a single battery cell unit can be replaced under the condition that the first battery cell unit or the second battery cell unit breaks down, so that the maintenance cost is reduced. The battery unit 10 provided by the present disclosure has a simple and compact structure, is convenient to carry, occupies a small space, and can improve the utilization rate of the space.

Further, the first battery cell unit and the second battery cell unit can adopt lithium iron phosphate batteries, and compared with conventional lead-acid batteries, the energy density of the battery capacitor of the lithium iron phosphate batteries is higher, for example, the energy density of the battery capacitor of the lithium iron phosphate batteries is 1.1-1.5 times of that of the lead-acid batteries, so that the uninterruptible power supply is compact in structure and high in space utilization rate. The charge-discharge cycle life of the lithium iron phosphate battery is longer, for example, the cycle life can exceed 30000 times, so that the operation and maintenance cost of the uninterrupted power supply is low. Besides, the lithium iron phosphate battery has the characteristics of high conversion efficiency, high safety, stable low-temperature performance and the like.

With continued reference to fig. 1 and 2, for convenience of description, the housing in the present disclosure may have a hexahedral structure, but is not limited thereto.

For easy maintenance, the housing may include an upper cover 110 and a lower cover 160 detachably connected to each other, wherein the upper cover 110 may be formed in a hexahedral housing structure, a first opening is formed at one end in a thickness direction thereof, a second opening is formed at one end in a length direction thereof, the lower cover 160 may cover the first opening, and the insulating layer 120 may be loaded into the housing through the first opening or the second opening, but not limited thereto. Alternatively, the upper cover 110 and the lower cover 160 may be connected by a fastener, but not limited thereto.

The second opening may correspond to the electrode terminal of the electric core pack 130, the circuit board 170 and the insulation cover 180 may be disposed at the second opening position, and the circuit board 170 is disposed at the inner side of the insulation cover 180. Specifically, the insulation cover 180 may be fixed with the upper cover 110 by a fastener, but not limited thereto.

The insulating layer 120 can be matched with the housing to be nested in the housing, a first through hole 121 for accommodating a positive electrode and a second through hole 122 for accommodating a negative electrode are formed at one end of the insulating layer 120 corresponding to the second opening, and the first through hole 121 and the second through hole 122 are arranged at intervals, so that the electric core assembly 130 can be communicated with the outside.

Specifically, referring to fig. 2 and 3, a third through hole 171 and a fourth through hole 172 are formed at positions on the circuit board 170 corresponding to the positive electrode and the negative electrode of the cell unit, a lead post 191 is provided at the third through hole 171 corresponding to the first cell unit, and the lead post 191 is connected to a lead at the fourth through hole 172 corresponding to the second cell unit by a connection lead 192, so that the first cell unit is connected to the second cell unit in series. The insulative cap 180 is provided with an external terminal through which the lead post 191 passes so that the electric core pack 130 can be electrically conducted with the outside of the battery cell 10.

As an example, the third through hole 171 is communicated with the first through hole 121, the fourth through hole 172 is communicated with the second through hole 122, and the positive electrode of the battery cell is electrically connected with the external terminal through the first through hole 121 and the third through hole 171, so as to facilitate charging and discharging of the battery cell 10. The positive electrode of the battery cell unit is electrically connected with the external connection terminal through the second through hole 122 and the fourth through hole 172.

In order to increase the voltage of the battery unit 10, the battery unit 10 may include at least two sets of the cell groups 130 stacked in the thickness direction of the housing and connected in series with each other, and a first foam 140 is disposed between two adjacent sets of the cell groups 130, and the first foam 140 may prevent the adjacent cell groups 130 from directly contacting with each other to cause friction or collision, thereby improving the shock resistance of the battery unit 10, and thus improving the safety of the battery unit 10.

Specifically, in the thickness direction of the battery unit 10, at least two sets of the electric core groups 130 and the first foam 140 can contact or press each other, that is, the electric core groups 130 are fixed in the casing by pressing, so as to prevent the electric core groups 130 from moving and being damaged in the using process or the transporting process, thereby improving the safety and the service life of the battery unit 10. Alternatively, the size of the case in the thickness direction thereof may be approximately an integral multiple of the size of the electric core pack 130 in the thickness direction thereof. For convenience of description, the battery unit 10 in the present disclosure may include two battery core packs 130, but is not limited thereto.

In order to further improve the shock resistance of the battery unit 10, second foam 150 may be disposed between the housing and both sides of the insulating layer 120 in the width direction, and the second foam 150 may also limit the insulating layer 120 in the width direction of the battery unit 10, so as to prevent the insulating layer 120 from shifting in the housing along the width direction of the battery unit 10, and to improve the service life of the battery unit 10.

To avoid relative play of the battery cells 10 within the ups, at least two battery cells 10 may be secured to each other, for example, but not limited to, adjacent battery cells 10 may be formed as a detachable connection.

Specifically, the housing is formed with a rotatable flange 113 and a threaded post 111 at both sides in the width direction thereof, the flange 113 is provided with a flange through hole 112 through which a fastener passes, the threaded post 111 may be formed at a position corresponding to the flange through hole 112, and the threaded post 111 is formed with a threaded hole matching the fastener. Alternatively, the burring 113 may be formed on a first end of the case in the thickness direction, and the screw post 111 is disposed near a second end of the case in the thickness direction to avoid interference when adjacent battery cells 10 are assembled. When the battery unit 10 is provided in plurality, the plurality of battery units 10 are stacked one on top of another and may be connected to each other by the flanges 113 and the screw posts 111. Specifically, the burring 113 of the battery cell 10 of the upper layer may be flipped over onto the battery cell 10 of the lower layer and the screw hole of the screw post 111 of the lower layer is aligned with the burring through-hole 112 and then fastened by a bolt.

The battery unit 10 provided by the disclosure has the advantages of compact structure, convenience in carrying, small occupied space and capability of improving the utilization rate of the space.

Referring to fig. 4, the present disclosure provides an uninterruptible power supply, the uninterruptible power supply includes a cabinet body 11 for accommodating battery units 10, at least two battery units 10, and a protection circuit board 12, the battery units 10 are stacked, and ventilation and heat dissipation holes are formed in the cabinet body 11 to prevent the temperature of the uninterruptible power supply from being too high and affecting normal operation. The protection circuit board 12 may be connected in series with the battery unit 10 to suppress the discharging voltage spike of the UPS when the UPS is supplying power, so as to protect the UPS circuit board; when the ups is charging, the protection circuit board 12 can suppress the charging peak voltage, thereby preventing the ups from overvoltage and protecting the ups. By way of example, the uninterruptible power supply provided in this disclosure includes 8 battery cells 10, but is not so limited.

In the description of the present disclosure, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the disclosure, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the disclosure.

The terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims (11)

1. The utility model provides a battery unit, its characterized in that, including the casing, nested in insulating layer (120) of casing inboard, by wrap up in electric core group (130) in insulating layer (120), arrange in circuit board (170) of the electrode tip of electric core group (130) and be located insulating cover (180) in the circuit board (170) outside, electric core group (130) with circuit board (170) electricity is connected, electric core group (130) include a pair of electric core unit of establishing ties, each electric core unit is formed with buckle structure respectively in its width direction's both sides, electric core unit includes first electric core unit and the second electric core unit of the range upon range of setting of its thickness direction, first electric core unit with second electric core unit passes through buckle structure interconnect.

2. The battery unit of claim 1, wherein the snap features are a protrusion snap and a rotatable flanging snap respectively formed on two sides of the cell unit in a width direction thereof, the flanging snap of the first cell unit is snap-fitted with the protrusion snap of the second cell unit, and the protrusion snap of the first cell unit is snap-fitted with the flanging snap of the second cell unit.

3. The battery cell according to claim 1, wherein the electric core groups (130) are at least two groups, at least two groups of the electric core groups (130) are arranged in layers stacked in the thickness direction of the case and are connected in series with each other, and a first foam (140) is arranged between two adjacent groups of the electric core groups (130); and/or second foam (150) is arranged between the two sides of the insulating layer (120) in the width direction and the shell.

4. The battery cell according to claim 1, wherein the case includes an upper cover (110) and a lower cover (160) that are matched, the upper cover (110) is provided with a first opening at one end in a thickness direction of the case, the lower cover (160) is detachably attached at the first opening, the upper cover (110) is provided with a second opening at one end in a length direction of the case, and the circuit board (170) is provided at the second opening.

5. The battery cell according to claim 1, wherein the insulating layer (120) is formed at a first end in a length direction thereof with a first through-hole (121) for receiving a positive electrode and a second through-hole (122) for receiving a negative electrode, the first through-hole (121) and the second through-hole (122) being disposed at a distance from each other.

6. The battery unit according to claim 1, wherein the circuit board (170) is formed with a third through hole (171) and a fourth through hole (172) at positions corresponding to positive and negative electrodes of the cell unit, a terminal post (191) is provided at the third through hole (171) corresponding to the first cell unit, and the terminal post (191) is connected to a wire at the fourth through hole (172) corresponding to the second cell unit by a connecting wire (192) so that the first cell unit is connected in series with the second cell unit.

7. The battery unit of any one of claims 1-6, wherein the cell unit is a lithium iron phosphate battery.

8. An uninterruptible power supply, characterized in that it comprises a battery unit (10) according to any of claims 1 to 7, the battery units (10) being at least two and arranged in a stack.

9. The uninterruptible power supply according to claim 8, wherein the housing of the battery unit (10) is formed at both sides in the width direction thereof with a rotatable burring (113) and a threaded post (111), the threaded post (111) is formed with a threaded hole for a fastener to pass through, the burring (113) of one battery unit (10) is formed with a burring through-hole (112) at a position corresponding to the threaded hole of the adjacent battery unit (10), and the adjacent battery units (10) are connected together by the threaded hole and the burring through-hole (112).

10. The ups of claim 9, wherein the flange (113) is disposed at a first thickness-wise end of the housing and the threaded post (111) is disposed proximate a second thickness-wise end of the housing.

11. The uninterruptible power supply according to claim 10, comprising a cabinet for housing the battery unit (10), the cabinet being provided with ventilation holes.

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