CN215119147U

CN215119147U - Energy storage power supply

Info

Publication number: CN215119147U
Application number: CN202120969223.4U
Authority: CN
Inventors: 尹相柱; 黄小杰; 李子
Original assignee: Huizhou Xinminghai Technology Co ltd
Current assignee: Huizhou Xinminghai Technology Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-12-10
Anticipated expiration: 2031-05-07

Abstract

The embodiment of the utility model relates to the technical field of energy storage application, and discloses an energy storage power supply, which comprises a shell, a first cavity and a second cavity, wherein the shell is provided with the first cavity and the second cavity; an inverter installed in the first chamber; the main control board is arranged in the first cavity and is electrically connected with the inverter; the battery module is arranged in the second cavity; and the connecting plug comprises a male plug and a female plug, the male plug is electrically connected with the battery module, the female plug is electrically connected with the main control board, the male plug is detachably connected with the female plug, and therefore the battery module can be conveniently replaced by detachably connecting the battery module with the main control board through the directional plug-in connection of the male plug and the female plug.

Description

Energy storage power supply

Technical Field

The utility model relates to an energy storage application technology field especially relates to an energy storage power supply.

Background

With the continuous and rapid development of clean energy and the continuous improvement of the requirement on the reliability of power supply, the battery energy storage technology is widely applied. The energy storage power supply is a new application mode of the battery energy storage technology, and is popular with more and more consumers because of the advantages of plug and play, high output efficiency, long service life, portability and high safety.

At present, an energy storage power supply generally comprises a battery module, an inverter, a main control board, an input interface and an output interface. When the energy storage power supply is connected to the commercial power through the input interface, the inverter can supply the commercial power to a load connected to the output interface after the commercial power is reduced in voltage, or charge the energy storage battery pack; when the energy storage power supply is not connected with the commercial power, the electric energy stored in the battery module continues to supply power to the load after being inverted by the inverter so as to ensure the stable operation of the load.

In the process of implementing the present invention, the inventor finds that: the battery module in the energy storage power supply is connected with the main control board through a common wire, and in order to guarantee the stability of an internal circuit of the energy storage power supply, the two ends of the wire are often fixed to the battery module and the main control board through welding, however, the battery module is not convenient to replace in the connecting mode.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide an energy storage power aims at solving and adopts the welding to be fixed in battery module and main control board respectively with the both ends of wire, and produced is unfavorable for changing the technical problem of battery module.

In order to solve the above technical problem, an embodiment of the present invention provides an energy storage power supply, including:

a housing provided with a first chamber and a second chamber;

an inverter mounted to the first chamber;

the main control board is arranged in the first cavity and is electrically connected with the inverter;

the battery module is arranged in the second cavity; and

the connecting plug comprises a male plug and a female plug, the male plug is electrically connected with the battery module, the female plug is electrically connected with the main control board, and the male plug is detachably connected with the female plug.

Optionally, the housing comprises a shell, a first end cap, and a second end cap;

the shell is followed be equipped with first opening and second opening on the direction of height of shell, first end cover connect in first opening part, and with the shell encloses jointly and becomes first cavity, the second end cover connect in the second opening part, and with the shell encloses jointly and becomes the second cavity, wherein, the second cavity with first cavity is independent each other.

Optionally, the battery module includes a battery frame, a plurality of battery cells, and a PCB;

the battery frame is fixed to the second end cover, the battery frame is provided with a first installation space and a second installation space which are communicated with each other, the PCB is accommodated and fixed in the first installation space, the battery cells are accommodated and fixed in the second installation space, the battery cells are electrically connected with the PCB, the PCB is electrically connected with the male plug, and the PCB is used for collecting state information of the battery cells.

Optionally, each of the cells is divided into at least two groups of cells connected in series, and the cells in each group of cells are connected in parallel.

Optionally, a surrounding wall protrudes from a surface of the second end cap facing the second mounting space, and the surrounding wall and the second end cap together form a receiving groove;

the battery module further comprises a first fixing frame and a second fixing frame, the first fixing frame is provided with a plurality of first fixing holes, one end of the battery cell is contained in and fixed in one first fixing hole, the second fixing frame is provided with a plurality of second fixing holes, and the other end of the battery cell is contained in and fixed in one second fixing hole.

Optionally, the first fixing frame is provided with a plurality of first protrusions, one first protrusion is located between two adjacent first fixing holes, the second fixing frame is provided with a plurality of second protrusions, and one second protrusion is located between two adjacent second fixing holes;

the battery module further comprises a first electric connecting piece and a second electric connecting piece, the first electric connecting piece is welded with one ends of the plurality of battery cores respectively, the first electric connecting piece is provided with a plurality of first bayonets, the first protrusions are clamped in the first bayonets, the second electric connecting piece is welded with the other ends of the plurality of battery cores respectively, the second electric connecting piece is provided with a plurality of second bayonets, and the second protrusions are clamped in the second bayonets.

Optionally, the first protrusion is located on a surface of the first fixing frame close to the second installation space;

the second bulge is positioned on one surface of the second fixing frame far away from the first mounting space.

Optionally, the battery module further comprises a first clamping plate and a second clamping plate;

the first clamping plate is provided with a third clamping opening and a first clamping plate opening, the first clamping plate opening and the third clamping opening are arranged at intervals, the first clamping plate opening is positioned on one side of the first clamping plate, the first bulge is clamped in the third clamping opening, and a positive pole column at one end of the battery cell is clamped in the first clamping plate opening;

fourth bayonet socket and second bayonet socket opening have been seted up to the second joint board, second bayonet socket opening with the fourth bayonet socket interval sets up, and the second bayonet socket opening is in one side of second bayonet socket, the protruding joint of second in the fourth bayonet socket, be in the anodal post joint of the other end of electric core the second bayonet socket opening.

Optionally, the battery module further includes a buffer board, and the buffer board is disposed between the plurality of battery cells and the PCB.

Optionally, the battery module further includes a heat dissipation plate, the heat dissipation plate is disposed between the PCB and the inner surface of the battery frame near the second mounting space, and the heat dissipation plate is attached to each electrical component on the PCB.

The utility model discloses embodiment's beneficial effect is: be different from prior art's condition, the embodiment of the utility model provides a pair of energy storage power supply sets up the public plug rather than the electricity is connected on battery module, sets up the female plug rather than the electricity is connected on the main control board, through the directional plug-in connection of public female plug, realizes dismantling between battery module and the main control board and is connected, and then can conveniently change battery module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is an assembly view of a housing and a battery module in an energy storage power supply according to an embodiment of the present invention;

fig. 2 is an exploded view of a battery module of the energy storage power supply of fig. 1;

FIG. 3 is an angled view of the housing of the stored energy power supply of FIG. 2;

FIG. 4 is a cross-sectional view of the housing provided in FIG. 3;

fig. 5 is a structural view of a second end cap in the battery module provided in fig. 2;

FIG. 6 is a block circuit diagram of the energy storage power supply provided in FIG. 1;

fig. 7 is an angular view of a battery frame of the battery module provided in fig. 2;

FIG. 8 is a cross-sectional view of the battery frame provided in FIG. 7;

fig. 9 is a partially enlarged view of an exploded structure of the battery module provided in fig. 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as being "fixed to" or "affixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and fig. 2, an energy storage power supply according to an embodiment of the present invention includes a housing 10, an inverter 20, a main control board 30, a battery module 40, and a connection plug 50. The casing 10 is provided with a first cavity and a second cavity, the inverter 20 and the main control board 30 are both installed in the first cavity, the battery module 40 is installed in the second cavity, the connecting plug 50 comprises a male plug 51 and a female plug 52, the male plug 51 is electrically connected with the battery module 40, the female plug 52 is electrically connected with the main control board 30, the male plug 51 is detachably connected with the female plug 52, so that the battery module 40 is electrically connected with the main control board 30, and the main control board 30 is further electrically connected with the inverter 20. Through the directional plug-in connection of the male and female plugs 52, the detachable connection between the battery module 40 and the main control board 30 is realized, and then the battery module 40 can be conveniently replaced.

It should be understood that the arrangement of the male and female plugs 52 can be adjusted according to the actual use requirement, for example, in other embodiments of the present invention, the male plug 51 can also be electrically connected to the main control board 30, and correspondingly, the female plug 52 can also be electrically connected to the battery module 40.

As for the case 10 described above, the case 10 includes a housing 11, a first end cap 12, and a second end cap 13.

Specifically, referring to fig. 3 and 4, the housing 11 includes a first sidewall 111, a second sidewall 112, a third sidewall 113, a fourth sidewall 114, and a pad 115. First lateral wall 111, second lateral wall 112, the relative both ends of third lateral wall 113 and fourth lateral wall 114 connect gradually and form vertical tubular structure jointly, vertical tubular structure has seted up first opening and second opening respectively in the direction of height of shell 11, first opening and second opening all communicate in this vertical tubular structure's inner space, backing plate 115 sets up in this vertical tubular structure's inner space along the direction of height of perpendicular to shell 11, in order to divide into this inner space mutually independent first division chamber and second division chamber, wherein, first opening is the opening in first division chamber, the second opening is the opening in second division chamber.

Further, a first inclined wall 116 is further disposed between the first side wall 111 and the second side wall 112, a first included angle is formed between the first inclined wall 116 and the first side wall 111, and a second included angle is formed between the first inclined wall 116 and the second side wall 112, wherein the first included angle is equal to the second included angle.

A second inclined wall 117 is further arranged between the second side wall 112 and the third side wall 113, a third included angle is formed between the second inclined wall 117 and the second side wall 112, a fourth included angle is formed between the second inclined wall 117 and the third side wall 113, and the third included angle is equal to the fourth included angle.

A third inclined wall 118 is further arranged between the third side wall 113 and the fourth side wall 114, a fifth included angle is formed between the third inclined wall 118 and the third side wall 113, a sixth included angle is formed between the third inclined wall 118 and the fourth side wall 114, and the fifth included angle is equal to the sixth included angle.

A fourth inclined wall 118 is further arranged between the fourth side wall 114 and the first side wall 111, a seventh included angle is formed between the fourth inclined wall 118 and the fourth side wall 114, an eighth included angle is formed between the fourth inclined wall 118 and the first side wall 111, and the seventh included angle is equal to the eighth included angle.

The first end cap 12 is connected to the first opening for sealing the first open cavity, so as to cover the inverter 20 and the main control board 30 in the first cavity, wherein the first cavity is formed by enclosing the first end cap 12, the tubular structure and the backing plate 115 together, and preferably, the first end cap 12 and the tubular structure are connected by a fastener or a buckle to realize detachable connection of the first end cap 12 and the tubular structure.

It should be understood that the connection manner between the first end cap 12 and the tubular structure can be adjusted according to the actual use requirement, for example, in other embodiments of the present invention, the first end cap 12 and the tubular structure can be integrally formed or bonded to realize the non-detachable connection between the first end cap 12 and the tubular structure.

The second end cap 13 is connected to the second opening for sealing the second open cavity, so as to cover the battery module 40 in the second cavity, wherein the second cavity is formed by enclosing the second end cap 13, the tubular structure and the backing plate 115 together, and preferably, the second end cap 13 and the tubular structure are connected by a fastener or a buckle to realize detachable connection of the second end cap 13 and the tubular structure.

It should be understood that the connection manner between the second end cap 13 and the tubular structure can be adjusted adaptively according to the actual use requirement, for example, in other embodiments of the present invention, the second end cap 13 and the tubular structure can be integrally formed or bonded to realize the non-detachable connection between the second end cap 13 and the tubular structure.

Further, referring to fig. 5, the second end cap 13 is provided with a surrounding wall 131 and a plurality of screw posts 132 surrounding the surrounding wall 131, preferably, the surrounding wall 131 protrudes into the second cavity along the surface of the second end cap 13 facing the first opening, wherein the surrounding wall 131 and the second end cap 13 together form a receiving groove 131a for placing the battery module 40.

It should be noted that, in the embodiment of the present invention, the energy storage power source is normally disposed on a table top parallel to a horizontal plane, and the table top is taken as a reference plane for exemplary illustration, so that the height direction of the housing 11 refers to a direction from one end of the housing 11 close to the table top to one end of the housing 11 far from the table top.

Referring to fig. 6, the inverter 20 includes a DC/DC converter unit 21 and a DC/AC inverter unit 22. The DC/DC frequency conversion unit 21 and the DC/AC inversion unit 22 are electrically connected to the battery module 40 through the main control board 30, specifically, the DC/DC frequency conversion unit 21 is configured to convert an input voltage and then adjust a fixed output voltage, and the DC/AC inversion unit 22 is configured to convert a direct current into an alternating current, so that the direct current stored in the battery module 40 is converted into a required alternating current through the DC/AC inversion unit 22. Therefore, different use requirements of customers can be met.

Referring to the main control board 30, with continued reference to fig. 6, the main control board 30 is fixed on the surface of the first end cap 12 near the first chamber, and may include an input interface 31, a DC output interface 32, and an AC output interface 33. The input interface 31, the DC output interface 32 and the AC output interface 33 all extend and are exposed on the surface of the first end cover 12 away from the first chamber, wherein the input interface 31 is electrically connected to the main control board 30 for accessing the commercial power, the DC output interface 32 is electrically connected to the main control board 30 through the DC/DC frequency conversion unit 21 for accessing the load adapted thereto, and the AC output interface 33 is electrically connected to the main control board 30 through the DC/AC inverter unit 22 for accessing the load adapted thereto.

Referring to fig. 2, and fig. 7 and 8 together, the battery module 40 includes a battery frame 41, a plurality of battery cells 44, and a PCB 49.

Specifically, the battery frame 41 includes a first side plate (not shown), a second side plate (not shown), a third side plate (not shown), a fourth side plate (not shown), and a fifth side plate (not shown). The first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected and are respectively connected with each edge of the fifth side plate to jointly enclose a first installation space 41b41b, the first installation space 41b41b is used for accommodating a plurality of battery cells 44, and the fifth side plate is located at one end of the first side plate facing the first cavity along the height direction of the first side plate.

It is worth to be noted that the fifth side plate is located at the same end of the first side plate, the second side plate, the third side plate and the fourth side plate, so in the embodiment of the present invention, the first side plate is taken as a reference for exemplary illustration.

Further, one end of the first side plate, which is far away from the first cavity, is bent and extended to form a first edge 4111, the first edge 4111 is provided with a first through hole 4112, one end of the second side plate, which is far away from the first cavity, is bent and extended to form a second edge 4121, the second edge 4121 is provided with a second through hole 4122, one end of the third side plate, which is far away from the first cavity, is bent and extended to form a third edge 4131, the third edge 4131 is provided with a third through hole 4132, one end of the fourth side plate, which is far away from the first cavity, is bent and extended to form a fourth edge 4141, the fourth edge 4141 is provided with a fourth through hole 4142, and the fifth side plate is provided with an opening for exposing the PCB 49. The first through hole 4112, the second through hole 4122, the third through hole 4132 and the fourth through hole 4142 are all fixed to the stud post 132 by fasteners, so that the battery frame 41 is detachably connected to the second end cap 13.

The battery frame 41 further includes a protection wall 416 and a blocking wall 417, the protection wall 416 is formed by protruding edges of the opening from the surface of the fifth side plate near the first opening toward the first opening, the edges of the blocking wall 417 are connected to one end of the protection wall 416 near the first opening to close the opening of the fifth side plate, wherein the blocking wall 417 and the protection wall 416 together enclose a second mounting space 41a, and the second mounting space 41a is used for receiving and fixing the PCB 49. Preferably, the guard wall 416 and the baffle wall 417 are both hollowed-out plates.

For the above-mentioned multiple electric cores 44, the multiple electric cores 44 are all electrically connected with the PCB 49, and each electric core 44 is stacked according to a preset rule to be accommodated in the accommodating slot together, optionally, the preset rule can refer to the arrangement manner of each electric core 44 in fig. 9, that is, each electric core 44 is divided into at least two groups of electric core groups connected in series, and each electric core 44 in each electric core group is connected in parallel. The battery cell 44 is 18650 battery cell 44. It should be understood that the number, size and electrical connection form of the cells 44 can be adjusted adaptively according to actual use requirements, and are not described herein again.

In order to stably accommodate each battery cell 44 in the accommodating slot, the battery module 40 optionally further includes a first fixing frame 42 and a second fixing frame 43. The first fixing frame 42 and the second fixing frame 43 respectively fix two ends of each battery cell 44, specifically, a plurality of first fixing holes (not shown) are provided on the first fixing frame 42, one end of one battery cell 44 is accommodated and fixed in the first fixing hole, a plurality of second fixing holes (not shown) are provided on the second fixing frame 43, and the other end of one battery cell 44 is accommodated and fixed in the second fixing hole.

Further, the first fixing frame 42 is further provided with a plurality of first protrusions (not shown), preferably, the first protrusions are located on a surface of the first fixing frame 42 close to the second mounting space 41a, and a first protrusion is located between two adjacent first fixing holes.

The second fixing frame 43 is further provided with a plurality of second protrusions (not shown), preferably, the second protrusions are located on a surface of the second fixing frame 43 away from the first mounting space 41b, and a second protrusion is located between two adjacent second fixing holes.

The battery module 40 further includes a first engaging plate 45 and a second engaging plate 46. The first clamping plate 45 is provided with a third bayonet (not shown) and a first clamping plate opening (not shown), the first clamping plate opening and the third bayonet are arranged at intervals, the first clamping plate opening is located on one side of the first clamping plate 45, the first protrusion is clamped at the third bayonet, and the first clamping plate opening is used for clamping a positive pole located at one end of the battery cell 44.

The second clamping plate 46 is provided with a fourth bayonet (not shown) and a second clamping plate opening (not shown), the second clamping plate 46 opening and the fourth bayonet are arranged at an interval, the second clamping plate 46 opening is located at one side of the second clamping plate 46, the second protrusion is clamped at the fourth bayonet, and the second clamping plate 46 opening is used for clamping a positive pole at the other end of the battery cell 44. The first clamping plate 45 and the second clamping plate 46 are both made of glass fiber plates.

To facilitate electrical connection between the battery cells 44, the battery module 40 optionally further includes a first electrical connector 47 and a second electrical connector 48.

The first electrical connectors 47 are respectively welded to one ends of the plurality of battery cells 44, specifically, there are two first electrical connectors 47, one of the first electrical connectors 47 is electrically connected to the positive electrodes and the negative electrodes of the two battery cell groups, and the other first electrical connector 47 is electrically connected to the positive electrodes of the battery cell groups, and further electrically connected to the PCB 49.

The second electrical connectors 48 are respectively welded to the other ends of the plurality of battery cells 44, specifically, there are two second electrical connectors 48, one second electrical connector 48 is electrically connected to the positive electrodes and the negative electrodes of the other two battery cell groups, and the other first electrical connector 47 is electrically connected to the negative electrodes of the battery cell groups, and further electrically connected to the PCB 49. Wherein, two first electric connectors 47 are not contacted with each other, and two second electric connectors 48 are not contacted with each other.

Further, the first electrical connector 47 has a plurality of first notches (not shown), and a first protrusion is engaged in the first notches. Wherein the first electrical connection piece 47 is a nickel plate for facilitating soldering.

The second electrical connector 48 has a plurality of second notches (not shown), and a second protrusion is engaged in the second notches, wherein the second electrical connector 48 is a nickel plate for easy soldering.

In the PCB 49, the PCB 49 is preferably a BMS control board and is received in the second receiving space 41 a. The PCB 49 is mainly used to improve the utilization rate of each cell 44, prevent the cells 44 from being overcharged and overdischarged, and prolong the service life of the cells 44.

In order to ensure that the PCB 49 is always within the predetermined temperature range, optionally, the battery module 40 further includes a heat dissipation plate, the heat dissipation plate is disposed between the PCB 49 and the inner surface of the battery frame 41 near the second mounting space 41a, one surface of the heat dissipation plate is attached to each electrical component on the PCB 49, and the other surface of the heat dissipation plate is at least partially exposed to the hollow area of the blocking wall 417. Thus, heat generated by each electrical component on the PCB 49 is quickly transferred to the heat dissipation plate and further dissipated to the second mounting space 41 a. Preferably, the heat dissipation plate is made of a metal material.

In order to improve the structural stability of each battery cell 44 and the PCB 49, optionally, the battery module 40 further includes a buffer plate disposed between one end of each battery cell 44 and the PCB 49. With the arrangement, the occurrence of local fracture of the PCB 49 caused by the extrusion force of the plurality of battery cells 44 can be reduced.

The embodiment of the utility model provides an in, through set up the public plug 51 rather than the electricity is connected on battery module 40 to and set up the female plug 52 rather than the electricity is connected on main control board 30, through the directional plug-in connection of public female plug 52, realize dismantling between battery module 40 and the main control board 30 and be connected, and then can conveniently change battery module 40.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An energy storage power supply, comprising:

a housing provided with a first chamber and a second chamber;

an inverter mounted to the first chamber;

the battery module is arranged in the second cavity; and

2. The energy storage power supply of claim 1,

the housing comprises a shell, a first end cover and a second end cover;

3. The energy storage power supply of claim 2,

the battery module comprises a battery frame, a plurality of battery cells and a PCB;

4. The energy storage power supply of claim 3,

each battery cell is divided into at least two groups of battery cell groups connected in series, and the battery cells in each battery cell group are connected in parallel.

5. The energy storage power supply of claim 4,

the surface of the second end cover facing the second mounting space is convexly provided with a surrounding wall, and the surrounding wall and the second end cover jointly surround to form a containing groove;

6. The energy storage power supply of claim 5,

the first fixing frame is provided with a plurality of first bulges, and one first bulge is positioned between two adjacent first fixing holes;

the second fixing frame is provided with a plurality of second bulges, and one second bulge is positioned between two adjacent second fixing holes;

7. The energy storage power supply of claim 6,

the first bulge is positioned on one surface of the first fixing frame close to the second mounting space;

8. The energy storage power supply according to claim 6, wherein the battery module further comprises a first clamping plate and a second clamping plate;

9. The energy storage power supply of claim 3,

the battery module further comprises a buffer plate, and the buffer plate is arranged between the plurality of battery cores and the PCB.

10. The energy storage power supply of claim 3,

the battery module further comprises a heat dissipation plate, the heat dissipation plate is arranged between the PCB and the inner surface, close to the second installation space, of the battery frame, and the heat dissipation plate is attached to each electric element on the PCB.