CN214337831U

CN214337831U - Energy storage device capable of being combined

Info

Publication number: CN214337831U
Application number: CN202120611202.5U
Authority: CN
Inventors: 王建军; 范习浩; 王文杰; 王飞飞
Original assignee: Jiangsu Ruihongzhong Energy Storage Technology Co ltd
Current assignee: Jiangsu Ruihongzhong Energy Storage Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-10-01
Anticipated expiration: 2031-03-25

Abstract

The application relates to the technical field of energy storage, in particular to a parallel operation energy storage device, which comprises a plurality of energy storage systems connected in series, a battery management system connected with the energy storage systems and an inverter, wherein each energy storage system comprises a case and a lithium battery arranged in the case; be provided with the parallel operation module on the lithium cell, the parallel operation module includes the joint of being connected with the positive pole of lithium cell and the interface of being connected with the negative pole of lithium cell, connect and interface grafting cooperation. The connectors of the two adjacent lithium batteries are in plug-in connection with the interfaces, so that the adjacent lithium batteries can be conveniently connected in series, a plurality of energy storage systems can be connected in series for use, and the service time and the alternating current output power of the energy storage device can be conveniently prolonged.

Description

Energy storage device capable of being combined

Technical Field

The application relates to the technical field of energy storage, in particular to a parallel operation energy storage device.

Background

The photovoltaic energy storage equipment is mainly an intelligent power supply device integrating a photovoltaic photoelectric system and an electric power storage and energy storage system, and is commonly used in places with power consumption difficulties, such as frontier sentries, navy bases, island fishing boats, cruise ships, rangelands, remote areas and the like.

At present, photovoltaic energy storage equipment comprises a box body, a solar photovoltaic collecting plate, a storage battery, a charge and discharge controller and an electrical functional component. The solar photovoltaic collecting plate is directly and fixedly arranged on the outer surface of the box body and cannot be separated from the box body once arranged, so that the lighting area of the solar photovoltaic collecting plate cannot be changed; the output power of the photovoltaic energy storage equipment is directly related to the daylighting area of the solar photovoltaic panel, and the daylighting area of the solar photovoltaic panel is constrained by the size of the box body, so that the photovoltaic energy storage equipment is easy to carry and store in the production process, the output power of the photovoltaic energy storage equipment is smaller, and the service life is shorter.

SUMMERY OF THE UTILITY MODEL

In order to improve the output power of the energy storage device, the parallel operation energy storage device is provided.

The application provides a but parallel operation energy memory adopts following technical scheme:

an energy storage device capable of being connected in parallel comprises a plurality of energy storage systems connected in series, a battery management system connected with the energy storage systems and an inverter, wherein each energy storage system comprises a case and a lithium battery arranged in the case;

be provided with the parallel operation module on the lithium cell, the parallel operation module includes the joint of being connected with the positive pole of lithium cell and the interface of being connected with the negative pole of lithium cell, connect and interface grafting cooperation.

Through adopting above-mentioned technical scheme, the cooperation of pegging graft with the interface is pegged graft to the joint of two adjacent lithium cells, the series connection between the adjacent lithium cell of being convenient for a plurality of energy storage systems establish ties and use, thereby be convenient for improve energy memory's live time and exchange output.

Optionally, the battery management system includes a control module, a display module, a wireless communication module and a collection module for collecting lithium battery information, the collection module is connected with the control module through the wireless communication module, and the control module is connected with the display module.

Through adopting above-mentioned technical scheme, the collection module is convenient for gather information such as voltage, electric current, temperature, total voltage of single lithium cell in real time, helps control module to acquire information such as voltage, temperature of lithium cell, carries out effectual control, protection, electric quantity equilibrium and trouble alarm to the lithium cell, is convenient for improve energy memory's work efficiency and life.

Optionally, positioning holes for the connectors and the interfaces to penetrate through are respectively formed at two ends of the case;

the machine case is provided with an accommodating groove at the position of the positioning hole, and the machine case is provided with a cover plate at the position of the accommodating groove.

Through adopting above-mentioned technical scheme, when the lithium cell in the state of inoperative, can accomodate joint and interface in the holding tank, effectively reduce the interface and connect impaired possibility.

Optionally, a connecting piece is arranged between the cover plate and the case.

Through adopting above-mentioned technical scheme, when being convenient for fixed apron, the upset of the apron of being convenient for effectively reduces the possibility that the lithium cell during operation apron lost.

Optionally, an outer edge is formed on the cover plate in an extending manner.

Through adopting above-mentioned technical scheme, be convenient for open and close of apron.

Optionally, the cover plate is arranged as a rubber plate, and the cover plate is in interference fit with the accommodating groove.

Through adopting above-mentioned technical scheme, be convenient for the fixed of apron to be convenient for play the guard action to joint and interface.

Optionally, the heat dissipation fan is connected to the control module.

Through adopting above-mentioned technical scheme for when the temperature of lithium cell is higher than the setting value, radiator fan starts under control module's control action, is convenient for carry out cooling for the lithium cell, effectively reduces the lithium cell because of the high possibility that causes the damage of temperature.

Optionally, heat dissipation holes are formed in the side wall of the case.

Through adopting above-mentioned technical scheme, be convenient for improve the air flow of quick-witted incasement to be convenient for further cool off the lithium cell, help guaranteeing the normal work of lithium cell, improve the life of lithium cell.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the energy storage devices are connected in series, and the lithium battery is provided with the joints and the interfaces, so that the service time and the alternating current output power of the energy storage devices are conveniently improved;

2. the collecting module collects information such as voltage, current, temperature and total voltage of a single lithium battery in real time, the control module is facilitated to obtain the information such as voltage and temperature of the lithium battery, the lithium battery is effectively monitored, protected, balanced in electric quantity and subjected to fault alarm, and the working efficiency and the service life of the energy storage device are improved conveniently;

3. through the setting of holding tank, apron, connection piece, be convenient for place joint and interface in the holding tank that corresponds, effective butt joint plays the effect of protection with the interface, effectively reduces the interface and connects impaired possibility.

Drawings

Fig. 1 is a block flow diagram of an energy storage device according to an embodiment of the present disclosure.

Fig. 2 is a block diagram illustrating a structure of a battery management system according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an energy storage device according to an embodiment of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is another schematic structural diagram of an energy storage device according to an embodiment of the present application.

Description of reference numerals: 1. an energy storage system; 11. a chassis; 111. a housing; 112. a connecting plate; 113. a heat dissipation support plate; 114. a first chute; 115. a second chute; 116. positioning holes; 117. accommodating grooves; 118. a cover plate; 119. connecting sheets; 120. an outer edge; 12. a lithium battery; 13. a parallel machine module; 131. a joint; 132. an interface; 2. a battery management system; 21. a control module; 22. a display module; 23. a wireless communication module; 24. an acquisition module; 3. an inverter; 4. a heat radiation fan; 41. and (4) heat dissipation holes.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses energy storage device capable of being connected in parallel. Referring to fig. 1 and 2, the energy storage device includes a plurality of energy storage systems 1 connected in series, a battery management system 2 connected to the energy storage systems 1, and an inverter 3, so as to form an energy storage device capable of operating independently and operating in parallel, and the energy storage device can be operated independently by a single energy storage system 1 or can be used by a plurality of energy storage systems 1 connected in series.

Referring to fig. 1 and fig. 3, the energy storage system 1 includes a case 11 and lithium batteries 12 disposed in the case 11, a parallel operation module 13 is disposed on the lithium batteries 12, the parallel operation module 13 includes a connector 131 connected to an anode of the lithium battery 12 and an interface 132 connected to a cathode of the lithium battery 12, and the connectors 131 of two adjacent lithium batteries 12 are in plug-in fit with the interface 132, so as to facilitate series connection between the adjacent lithium batteries 12. In addition, the lithium battery 12 is connected with the inverter 3, and the direct current output by the lithium battery 12 is converted into alternating current under the action of the inverter 3, so that the alternating current output power is convenient to improve.

Referring to fig. 3 and 4, the chassis 11 includes a housing 111, a connection plate 112, and a heat dissipation support plate 113, wherein the housing 111 is provided with a first sliding slot 114 for the connection plate 112 to slide and a second sliding slot 115 for the heat dissipation support plate 113 to slide. When the lithium battery 12 needs to be installed, the lithium battery 12 is firstly placed in the machine shell 111, then the connecting plate 112 is preliminarily fixed on the machine shell 111 through the first sliding groove 114, the heat dissipation supporting plate 113 is positioned through the second sliding groove 115, the heat dissipation supporting plate 113 abuts against the connecting plate 112, the separation of the connecting plate 112 from the machine shell 111 is effectively reduced, and finally, the heat dissipation supporting plate 113 and the machine shell 111 are fixed firmly through the positioning bolt, so that the installation of the lithium battery 12 is completed.

In addition, the arrangement of the heat dissipation supporting plate 113 facilitates heat dissipation of the lithium battery 12, and effectively reduces the possibility of damage to the lithium battery 12 due to over-high temperature, thereby facilitating the improvement of the service life of the lithium battery 12.

Referring to fig. 3, the heat dissipation support plate 113 and the side wall opposite to the heat dissipation support plate 113 are respectively provided with a positioning hole 116 in a penetrating manner, and the connector 131 and the interface 132 penetrate through the corresponding positioning hole 116, so as to facilitate the series connection of the lithium batteries 12. An accommodating groove 117 is formed in the case 11 and located at the positioning hole 116, and a cover plate 118 is formed in the case 11 and located at the accommodating groove 117, specifically, the cover plate 118 is a rubber plate, and the cover plate 118 is in interference fit with the accommodating groove 117. When the lithium battery 12 is in an inoperative state, the connector 131 and the interface 132 can be accommodated in the accommodating groove 117, thereby effectively reducing the possibility that the interface 132 and the connector 131 are damaged.

Referring to fig. 5, in addition, a connecting piece 119 is fixedly connected between the cover plate 118 and the case 11, and the connecting piece 119 is made of a rubber material, so that the cover plate 118 can be conveniently turned over while the cover plate 118 is conveniently fixed, and the possibility that the cover plate 118 is lost when the lithium battery 12 works is effectively reduced. And an outer edge 120 is formed on the cover plate 118 in an outward extending manner, so that the cover plate 118 can be opened and closed conveniently.

Referring to fig. 2 and 3, the battery management system 2 includes a control module 21, a display module 22, a wireless communication module 23, and an acquisition module 24 for acquiring information of the plurality of lithium batteries 12, the acquisition module 24 is connected to the control module 21 through the wireless communication module 23, and the control module 21 is connected to the display module 22. Acquisition module 24 is convenient for gather information such as voltage, electric current, temperature, total voltage of single lithium cell 12 in real time, helps control module 21 to acquire information such as voltage, temperature of lithium cell 12, carries out effectual control, protection, electric quantity equilibrium and trouble alarm to lithium cell 12, is convenient for improve energy memory's work efficiency and life.

Referring to fig. 5, a plurality of cooling fans 4 are disposed on the side wall of the case 11, the plurality of cooling fans 4 are uniformly distributed, and the cooling fans 4 are connected to the control module 21, and are used for starting the cooling fans 4 under the control of the control module 21 when the temperature of the lithium battery 12 is higher than a set value, so as to cool the lithium battery 12.

Referring to fig. 3, in order to further improve the heat dissipation effect of the case 11, the heat dissipation holes 41 are uniformly distributed on the side wall of the case 11, so that the air flow in the case 11 is facilitated to be improved, thereby further cooling the lithium battery 12, helping to ensure the normal operation of the lithium battery 12, and prolonging the service life of the lithium battery 12.

The application embodiment of the parallel machine energy storage device has the implementation principle that:

through the series connection of a plurality of lithium batteries 12, be convenient for improve energy memory's live time and exchange output to under battery management system 2's effect, help control module 21 to acquire information such as lithium battery's 12 voltage, temperature, carry out effectual control, protection, electric quantity equilibrium and fault alarm to lithium battery 12, and then be convenient for improve energy memory's work efficiency and life.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a but parallel operation energy memory which characterized in that: the energy storage system comprises a plurality of energy storage systems (1) connected in series, a battery management system (2) connected with the energy storage systems (1) and an inverter (3), wherein the energy storage systems (1) comprise a case (11) and lithium batteries (12) arranged in the case (11);

be provided with parallel operation module (13) on lithium cell (12), parallel operation module (13) including with the joint (131) of the anodal connection of lithium cell (12) and with interface (132) that the negative pole of lithium cell (12) is connected, joint (131) and interface (132) are pegged graft and are cooperated.

2. The energy storage device capable of being parallel-connected according to claim 1, wherein: the battery management system (2) comprises a control module (21), a display module (22), a wireless communication module (23) and an acquisition module (24) for acquiring information of the lithium battery (12), wherein the acquisition module (24) is connected with the control module (21) through the wireless communication module (23), and the control module (21) is connected with the display module (22).

3. The energy storage device capable of being parallel-connected according to claim 1, wherein: positioning holes (116) for the joint (131) and the interface (132) to penetrate out are respectively formed in two ends of the case (11);

an accommodating groove (117) is formed in the position, located in the positioning hole (116), of the case (11), and a cover plate (118) is arranged on the position, located in the accommodating groove (117), of the case (11).

4. A parallel machine energy storage device according to claim 3, wherein: and a connecting sheet (119) is arranged between the cover plate (118) and the case (11).

5. A parallel machine energy storage device according to claim 3, wherein: an outer edge (120) extends from the cover plate (118).

6. A parallel machine energy storage device according to claim 3, wherein: the cover plate (118) is arranged to be a rubber plate, and the cover plate (118) is in interference fit with the accommodating groove (117).

7. The energy storage device capable of being parallel-connected according to claim 2, wherein: and the heat radiation fan (4) is arranged on the side wall of the case (11), and the heat radiation fan (4) is connected with the control module (21).

8. The energy storage device of claim 7, wherein: the side wall of the case (11) is provided with heat dissipation holes (41).