CN219800161U - Energy storage device and energy storage system - Google Patents

Abstract

The utility model relates to an energy storage device and an energy storage system. The energy storage equipment comprises a first parallel interface, a second parallel interface, a communication circuit, a radio frequency tag, a reader-writer and a control circuit. When a plurality of energy storage devices are connected in parallel through parallel connection interfaces to form an energy storage system, the energy storage devices can read radio frequency tags of adjacent energy storage devices through a reader-writer so as to acquire second identification codes of the adjacent energy storage devices, meanwhile, a control circuit generates a position detection signal according to first identification codes stored in the radio frequency tags and acquired second feature codes, the position detection signal is transmitted to control circuits and/or state display devices of other energy storage devices through a communication circuit, and the like, so that sorting and position identification of all the energy storage devices can be realized based on the position detection signal, and therefore, when a certain energy storage device fails, the position of the failed energy storage device can be rapidly determined, and accordingly, fault maintenance can be timely carried out.

Description

Energy storage device and energy storage system

Technical Field

The utility model belongs to the technical field of energy storage, and particularly relates to energy storage equipment and an energy storage system.

Background

In a home energy storage system, a plurality of energy storage devices can be connected in a parallel operation mode to form the energy storage system. The user may boost the capacity of the energy storage system by increasing the number of energy storage devices.

However, in the energy storage system, when a single energy storage device fails, most of the energy storage systems cannot quickly locate the failed energy storage device, and the failed energy storage device needs to be manually checked, cannot be timely subjected to fault maintenance, and has a large potential safety hazard.

Disclosure of Invention

The utility model aims to provide energy storage equipment and an energy storage system, and aims to solve the problem that the energy storage system is difficult to quickly and accurately position the position of a fault energy storage equipment.

A first aspect of an embodiment of the present utility model provides an energy storage device, including: the first parallel machine interface is arranged on the energy storage equipment; the first parallel interface is used for being connected with a second parallel interface of the state display device or other energy storage equipment; the second parallel interface is arranged on the energy storage equipment and is used for being connected with the first parallel interface of the base or other energy storage equipment; the communication circuit is connected between the communication pin of the first parallel operation interface and the communication pin of the second parallel operation interface; the radio frequency tag is arranged on the first side of the energy storage device and stores a first identification code of the energy storage device; the reader-writer is arranged on the second side of the energy storage device and is used for communicating with the radio frequency tag of the adjacent device and reading the second identification code stored in the radio frequency tag; the first side of the energy storage device is set up opposite to the second side of the energy storage device; the control circuit is connected with the communication circuit and the reader-writer and is used for generating a position detection signal according to the first identification code and the second identification code and outputting the position detection signal through the communication circuit; the position detection signal is used for carrying out position identification of the energy storage device.

In one embodiment, the radio frequency tag is disposed at a side far from the first parallel machine interface, and the reader is disposed at a side far from the second parallel machine interface.

In one embodiment, the energy storage device further includes a first end cover detachably connected to the first parallel machine interface, and the first end cover is integrated with the status display device.

In one embodiment, the status display device includes: the third parallel interface is used for being connected with the first parallel interface and comprises a communication pin; the state control unit is connected with the communication pin of the third parallel interface, so as to receive the position detection signals and/or state parameters transmitted by the communication pin, and acquire the position relation among the energy storage devices based on the position detection signals; and a display unit for displaying the positional relationship and/or the state parameter.

In one embodiment, the control circuit is further configured to receive, through the communication circuit, a position detection signal transmitted by another energy storage device, and obtain a positional relationship between a plurality of energy storage devices based on a plurality of position detection signals; the control circuit is also used for outputting the position relation to other energy storage devices or the state display device through the communication circuit.

In one embodiment, the energy storage device further includes a second end cap detachably connected to the second parallel operation interface, and the second end cap is further integrated with a base.

In one embodiment, the base includes a fourth parallel interface, a radio frequency tag, and a resistor; the radio frequency tag stores an identification code of the base; the fourth parallel interface is used for being connected with the second parallel interface; and the resistor is connected with a communication pin of the fourth parallel interface to serve as a terminal resistor of the communication circuit.

In one embodiment, the radio frequency tag includes an anti-interference device, where the anti-interference device is used to isolate interference of electromagnetic waves generated by other circuit modules of the energy storage device.

A second aspect of an embodiment of the present utility model provides an energy storage system, including: a plurality of energy storage devices as described above; the energy storage devices are connected through the first parallel connection interface or the second parallel connection interface.

A third aspect of an embodiment of the present utility model provides an energy storage system, further comprising: the base is provided with a fourth parallel operation interface; the state display device is provided with a third parallel operation interface; and a plurality of energy storage devices as described above; the energy storage devices are connected between the base and the state display device through the first parallel connection interface or the second parallel connection interface.

Compared with the prior art, the embodiment of the utility model has the beneficial effects that: when a plurality of energy storage devices are connected in parallel through parallel connection interfaces to form an energy storage system, the energy storage devices can read radio frequency tags of adjacent energy storage devices through a reader-writer so as to acquire second identification codes of the adjacent energy storage devices, meanwhile, a control circuit generates position detection signals according to the first identification codes stored in the radio frequency tags and the acquired second identification codes, and the position detection signals are transmitted to control circuits and/or state display devices of other energy storage devices through a communication circuit, and the like, so that sequencing and position identification of all the energy storage devices can be realized based on the position detection signals. When a certain energy storage device fails, the position of the failed energy storage device can be rapidly determined, so that the fault maintenance can be timely carried out. Meanwhile, the radio frequency tag is small in size and simple to install, the internal space of the energy storage device can be saved, and the circuit structure is simplified.

Drawings

Fig. 1 is a schematic structural diagram of an energy storage device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an energy storage device according to another embodiment of the present utility model;

fig. 3 is a schematic structural diagram of an energy storage device according to another embodiment of the present utility model;

FIG. 4 is a schematic diagram of an energy storage system according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an energy storage system according to another embodiment of the present utility model;

fig. 6 is a schematic structural diagram of an energy storage system according to another embodiment of the present utility model.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a 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 "a plurality" is two or more, unless explicitly defined otherwise.

Fig. 1 shows a schematic structural diagram of an energy storage device according to an embodiment of the present utility model, and for convenience of explanation, only the portions related to the embodiment are shown in detail as follows:

as shown in fig. 1, an energy storage device 100 includes: the system comprises a first parallel interface 110, a second parallel interface 120, a communication circuit 130, a radio frequency tag 140, a reader 150 and a control circuit 160.

The first parallel interface 110 is disposed on the energy storage device 100, and the first parallel interface 110 is used for connecting with a second parallel interface 120 of a status display device or other energy storage devices. The second parallel interface 120 is disposed on the energy storage device 100, and the second parallel interface 120 is used for connecting with the first parallel interface 110 of the base or other energy storage devices. The first parallel interface 110 and the second parallel interface 120 may be disposed on the left and right sides, front and back sides, upper and lower sides, or the same side of the energy storage device 100. The communication circuit 130 is connected between the communication pin of the first parallel interface 110 and the communication pin of the second parallel interface 120.

The energy storage device 100 may be electrically connected to other devices through a plug-in parallel connection interface. At this time, the first parallel interface 110 and the second parallel interface 120 may be respectively configured as a male connector and a female connector, so that the first parallel interface 110 and the second parallel interface 120 may be detachably connected with the male connector or the female connector corresponding to other devices.

In an embodiment, the energy storage device 100 may also be connected to the parallel connection interfaces of other energy storage devices through a power line connected to the parallel connection interfaces, where the parallel connection interfaces may be disposed at any location of the energy storage device 100.

The communication circuit 130 is connected between the communication pins of the first parallel interface 110 and the communication pins of the second parallel interface 120 of the energy storage device 100, and when the plurality of energy storage devices 100 are sequentially connected through the first parallel interface 110 and the second parallel interface 120, a complete communication loop can be formed.

The radio frequency tag 140 is disposed on a first side of the energy storage device 100, and the radio frequency tag 140 stores a first identification code of the energy storage device 100. The reader/writer 150 is disposed on the second side of the energy storage device 100, and is configured to communicate with the radio frequency tag 140 of the adjacent device, and read the second identification code stored in the radio frequency tag 140 of the adjacent device. Wherein a first side of the energy storage device 100 is established opposite a second side of the energy storage device 100. The control circuit 160 is connected to the communication circuit 130 and the read-write device, and is configured to generate a position detection signal according to the first identification code and the second identification code, and output the position detection signal through the communication circuit 130; the position detection signal is used to perform position identification of the energy storage device 100.

Wherein the neighboring device may be another energy storage device. The identification code stored in the radio frequency tag 140 is device information of the energy storage device 100, such as an SN (Serial Number) of the energy storage device 100, a unique identification code (such as ID identification information, etc.), and any code that can distinguish the current energy storage device 100. In an embodiment, the radio frequency tag 140 may further store parameter information of the energy storage device 100, such as one or more of rated input/output power, charge/discharge mode, and capacity of the energy storage device 100.

The radio frequency tag 140 may be read by other reader/writers 150, for example by a reader/writer 150 of other energy storage devices, or by a mobile phone with a radio frequency identification system (Radio Frequency IDentification; RFID) to query the energy storage device 100 for relevant parameters and information via the relevant APP.

The second identification code of the adjacent radio frequency tag 140 acquired by the reader/writer 150 may be used to identify the adjacent device, where the second identification code is device information of the adjacent energy storage device. The control circuit 160 of the energy storage device 100 may obtain a positional relationship with an adjacent energy storage device based on the first identification code and the second identification code acquired by the reader/writer 150, generate a position detection signal, and transmit the position detection signal to other devices through the communication circuit 130. Other devices can determine the location of each energy storage device 100 through the received location detection signal. It will be appreciated that the energy storage device storing the second identification code is located on the side of the energy storage device 100 storing the first identification code where the reader/writer 150 is located.

It should be noted that, when the plurality of energy storage devices 100 are connected in parallel through the first parallel interface 110 and the second parallel interface 120, each energy storage device 100 may output a corresponding position detection signal and transmit the position detection signal to each other through the communication circuit 130, and the control circuit 160 of each energy storage device 100 or the control module of other devices may sort the plurality of energy storage devices 100 according to the position detection signal sent by each energy storage device 100.

For example, when a plurality of energy storage devices 100 are connected in parallel to form an energy storage queue through a parallel connection interface, if a first identification code in one of the position detection signals is not the second identification code in any one of the position detection signals (i.e., the first identification code of one of the energy storage devices 100 is not acquired by the remaining energy storage devices 100), it may be determined that the energy storage device 100 corresponding to the first identification code in the position detection signal is the first energy storage device 100 in the energy storage device 100 queue. On this basis, the energy storage device 100 corresponding to the second identification code of the device is the second energy storage device 100 in the queue of energy storage devices 100. And so on, the position detection signal of the last energy storage device 100 in the energy storage queue will not contain the second identification code or the second identification code belongs to a specific device. Each position detection signal can determine the position of one energy storage device 100, and the positions of the energy storage devices 100 can be determined through a plurality of position detection signals, so that the sorting of the energy storage devices 100 is realized.

After the sorting of the plurality of energy storage devices 100 is completed, when one of the energy storage devices 100 fails, the position of the energy storage device 100 can be determined according to the position detection signal, so that the failed energy storage device 100 can be quickly positioned.

In one embodiment, the energy storage device 100 employs CAN communication and the position detection signal may be sent over a CAN bus to each device connected to the CAN bus. The communication pins of the first parallel interface 110 and the communication pins of the second parallel interface 120 may be CAN communication terminals, the communication circuit 130 may include CANH lines and CANL lines, and when the first parallel interface 110 and the second parallel interface 120 are connected to each other through the parallel interfaces, the communication pins of the second parallel interface 120 and the communication circuit 130 of the other devices form a CAN bus, and the plurality of energy storage devices 100 may transmit position detection signals through the CAN bus. The CAN bus has more nodes and strong anti-interference capability, and is suitable for connecting a plurality of energy storage devices 100.

As shown in fig. 1, in an embodiment, the radio frequency tag 140 is disposed on a side far from the first parallel interface 110, and the reader/writer 150 is disposed on a side far from the second parallel interface 120. In this embodiment, the radio frequency tag 140 and the reader/writer 150 are disposed on two opposite sides of the energy storage device 100, and the first side and the second side of the energy storage device 100 may be upper and lower sides or left and right sides, so as to ensure that the radio frequency tag 140 and the reader/writer 150 have the shortest transmission distance when connected with the rest of the energy storage devices.

It should be noted that, the rf tag 140 may be a passive rf tag 140, and may operate at multiple frequencies. The identification codes of the energy storage devices 100 stored in the rf tag 140 are set when the energy storage devices 100 are produced, and the identification codes of the energy storage devices 100 are different. The radio frequency tag 140 may be disposed either outside the housing of the energy storage device 100 or within the housing of the energy storage device 100. An antenna is arranged in the radio frequency tag 140 and can communicate with the reader-writer 150, and the working energy of the radio frequency tag 140 can acquire induction current from the radiation magnetic field of the coupling coil of the reader-writer 150 in an inductive coupling mode. In actual operation, the reader-writer 150 may periodically transmit a specific radio frequency signal, and when the radio frequency tag 140 enters the radiation magnetic field of the reader-writer 150, the radio frequency tag 140 may transmit its own stored identification code by virtue of the obtained induced current, where the identification code stored by the radio frequency tag 140 is a first identification code for the associated energy storage device 100 and a second identification code for an adjacent device.

Because the power and current transmitted by the first parallel interface 110 and the second parallel interface 120 are larger, a certain electromagnetic radiation can be generated, so that the radio frequency tag 140 and the reader-writer 150 are arranged at a position far away from the first parallel interface 110 and the second parallel interface 120, and the interference on the operation of the radio frequency tag 140 and the reader-writer 150 can be reduced.

As shown in fig. 2, in an embodiment, the energy storage device 100 further includes a first end cap 200 detachably connected to the first parallel port 110, and the first end cap 200 has a status display device 210 integrated thereon. The status display device 210 includes a third parallel interface 211, where the third parallel interface 211 is configured to connect with the first parallel interface 110 of the energy storage device 100.

In this embodiment, the first end cap 200 is used to avoid the first parallel interface 110 of the energy storage device 100 from being exposed when the energy storage device 100 is in standby or suspended. The first end cap 200 may be removed when the energy storage device 100 needs to be connected to other energy storage devices through the first parallel interface 110. The status display device 210 integrated on the first end cap 200 may provide a status display function, and the first parallel interface 110 of the energy storage device 100 may be electrically connected to the status display device 210.

In one embodiment, the status display device 210 includes: the state control unit 212 and the display unit 213, where the state control unit 212 is connected to the communication pin of the third parallel interface 211 to receive the position detection signals and/or the state parameters of the energy storage devices 100 transmitted by the communication pin, and may obtain the positional relationship between the plurality of energy storage devices 100 based on the plurality of position detection signals. The display unit 213 is used for displaying the positional relationship and/or the status parameter.

In this embodiment, the status display device 210 is connected to the first parallel interface 110 of the energy storage device 100 through the third parallel interface 211, where a communication pin on the third parallel interface 211 may be connected to a communication pin of the first parallel interface 110, so as to receive the position detection signal transmitted by the communication circuit 130.

In an embodiment, the communication pin of the state control unit 212 may be a CAN communication terminal, and when the first end cap 200 is connected to the energy storage device 100, the state control unit 212 may be configured to manage a CAN bus, and receive a position detection signal sent by the control circuit 160 through the CAN bus.

When a plurality of energy storage devices 100 are connected through a parallel interface, the state control unit 212 may receive position detection signals sent by the plurality of energy storage devices 100 through the CAN bus, so that the corresponding energy storage devices 100 may be ordered according to the plurality of position detection signals, and a positional relationship among the plurality of energy storage devices 100 is obtained.

In an embodiment, the status display device 210 may further include a reader/writer 150, where the reader/writer 150 of the status display device 210 is connected to the status control unit 212, and when the status display device 210 is connected to the plurality of energy storage devices 100, the reader/writer 150 of the status display device 210 may read the first identification code in the adjacent energy storage devices 100, so that the energy storage device 100 may be used as the first energy storage device 100 in the order, and may directly obtain the position information of the energy storage device 100.

In an embodiment, the energy storage device 100 may further send a status parameter to the state control unit 212 through the CAN bus, where the status parameter may include any one or more of an on-line condition, the number of connected loads, input/output power, and electric quantity of the energy storage device 100.

The state parameters of the energy storage devices 100 are acquired through the state control unit 212, so that when a certain energy storage device 100 fails, the energy storage devices 100 can be sequenced according to the position relationship obtained by the state control unit 212, and the processing steps can be simplified, so that the failed energy storage device 100 can be positioned quickly.

In this embodiment, the state control unit 212 may further correspondingly display the positional relationship and/or the received state parameter of the energy storage device 100 through the display unit 213.

In one embodiment, the state control unit 212 may be a microcontroller or other integrated circuit for control.

In an embodiment, the display unit 213 may be a display screen, a voice player, a projector, or other playing devices, and displays the positional relationship and/or status parameters of the energy storage device 100 to the user by means of light, voice, or pictures.

In an embodiment, the control circuit 160 is further configured to receive the position detection signals transmitted by the other energy storage devices 100 through the communication circuit 130, and obtain the positional relationship between the plurality of energy storage devices 100 based on the plurality of position detection signals. The control circuit 160 is further configured to output the positional relationship to the other energy storage devices 100 or the status display device 210 through the communication circuit 130. In addition to the state control unit 212, the control circuit 160 of each energy storage device 100 may receive the position detection signals transmitted by the other energy storage devices 100 through the communication circuit 130, so that the control circuit 160 may sort the plurality of energy storage devices 100 according to the plurality of position detection signals to obtain the position relationship among the plurality of energy storage devices 100, and thus, in the case that the energy storage devices 100 are not connected to the state display device 210, the control circuit 160 may also obtain the current position relationship to quickly locate each energy storage device 100.

As shown in fig. 2, in an embodiment, the energy storage device 100 further includes a second end cap 300 detachably connected to the second parallel machine interface 120, and the second end cap 300 further includes a base integrated with the base for supporting the energy storage device 100. The second end cap 300 may be connected to the second parallel interface 120 of the energy storage device 100 when the energy storage device 100 is in a standby or power-off state, for protecting the second parallel interface 120. While the second end cap 300 may form a base for securing and supporting the energy storage device 100.

In one embodiment, the base includes a radio frequency tag 140, a resistor 310, and a fourth parallel interface 320; the radio frequency tag 140 stores the identification code of the base, and the second identification code includes the identification code of the base; the fourth parallel interface 320 is configured to connect with the second parallel interface 120 of the energy storage device 100, and the resistor 310 is connected with a communication pin of the fourth parallel interface 320 to serve as the resistor 310 of the communication circuit 130. When the plurality of energy storage devices 100 are connected through the parallel connection interface, the communication circuit 130 of each energy storage device 100 is connected through the communication pin of the parallel connection interface to form a CAN bus communication loop, and the resistor 310 CAN be used as a terminal resistor of the CAN bus to ensure that the CAN bus works normally.

Specifically, the fourth parallel interface 320 of the base and the radio frequency tag 140 are both disposed on the same side of the base. When the plurality of energy storage devices 100 are connected to each other through the parallel connection interface, the base is connected to the lowest energy storage device 100, and the reader-writer 150 of the energy storage device 100 adjacent to the base can read the identification code stored by the radio frequency tag 140 of the base, and generate the corresponding position detection signal by using the identification code as the second identification code. When the radio frequency tag 140 is set in the factory, the identification code of the base is different from the first identification code of each energy storage device 100, so that after receiving the position detection signal sent by the energy storage device 100 adjacent to the base, other devices can immediately judge that the energy storage device 100 corresponding to the first identification code in the position detection signal is adjacent to the base according to the second identification code (the identification code of the base) in the position detection signal.

In an embodiment, the energy storage device 100 further includes an energy storage unit 170, the energy storage device 100 may be a battery pack, and the energy storage unit 170 may be a battery cell. The first parallel interface 110 and the second parallel interface 120 further include power pins, and the energy storage unit 170 is respectively connected to the power pins of the first parallel interface 110 and the second parallel interface 120, and the control circuit 160, and the energy storage unit 170 can store electric energy for outputting or inputting electric power under the control of the control circuit 160.

As shown in fig. 3, in an embodiment, the radio frequency tag 140 includes an anti-interference device 180, and the anti-interference device 180 is used to isolate electromagnetic wave interference generated by other circuit modules of the energy storage device 100.

Specifically, when the radio frequency tag 140 is disposed inside the energy storage device 100, in order to avoid electromagnetic waves generated when the internal circuit module of the energy storage device 100 works, to affect the normal communication between the radio frequency tag 140 and the reader/writer 150, the anti-interference device 180 may be disposed on the radio frequency tag 140.

In an embodiment, the anti-interference device 180 may include a shielding coil or a shielding copper foil, and the anti-interference device 180 is disposed between the radio frequency tag 140 and the control circuit 160 and between the radio frequency tag 140 and the parallel operation interface.

As shown in fig. 3, in an embodiment, the energy storage device 100 further includes a man-machine interaction unit 190 connected to the control circuit 160, and the man-machine interaction unit 190 may be a touch screen. The man-machine interaction unit 190 is configured to display the positional relationship between the plurality of energy storage devices 100 obtained by the control circuit 160, and may also input an operation instruction to the control circuit 160 through the man-machine interaction unit 190.

Fig. 4 is a schematic structural diagram of an energy storage system according to an embodiment of the present utility model, and for convenience of explanation, only the portions related to the embodiment are shown in detail as follows:

as shown in fig. 4, an energy storage system 400 includes a plurality of energy storage devices 100 according to any of the embodiments described above. The plurality of energy storage devices 100 are connected to each other through the first parallel interface 110 or the second parallel interface 120. The number of the energy storage devices 100 is not limited in this embodiment, and may be configured according to practical situations.

In an embodiment, a plurality of energy storage devices 100 may be stacked together sequentially from bottom to top, and connected to each other through the first parallel interface 110 or the second parallel interface 120.

As shown in fig. 4, after a plurality of energy storage devices 100 are connected to form an energy storage system 400, the radio frequency tag 140 of each energy storage device 100 is set up opposite to the reader/writer 150 of the adjacent energy storage device 100, so that the reader/writer 150 of the energy storage device 100 can read the identification code of the adjacent energy storage device 100, and the control circuit 160 generates a position detection signal according to the first identification code of itself and the second identification code of the adjacent energy storage device 100. The communication circuit 130 may be a CAN communication circuit, and after the plurality of energy storage devices 100 are connected, a CAN bus is formed, and the control circuit 160 may broadcast the position detection signal to the control circuits 160 of the other energy storage devices 100 through the CAN bus. The control circuit 160 of each energy storage device 100 may order the plurality of energy storage devices 100 according to the position detection signal transmitted by each energy storage device 100.

As shown in fig. 5, in one embodiment, the energy storage system 400 further includes the base and status display device 210 of any of the embodiments described above. The base has a fourth parallel interface 320, and the status display device 210 has a third parallel interface 211. The plurality of energy storage devices 100 are connected between the base and the status display device 210 through the first parallel interface 110 or the second parallel interface 120.

As shown in fig. 5, in an embodiment, a base is used to support the energy storage devices 100, and a plurality of energy storage devices 100 are stacked on the base in sequence. The base further includes a resistor 310, where after the communication circuits 130 in the multiple energy storage devices 100 are connected through the communication pins in the parallel interface to form a CAN bus, the resistor 310 may be used as a termination resistor of the CAN bus.

As shown in fig. 5, the status display device 210 includes a status control unit 212 and a display unit 213, which are disposed at the top of the energy storage system 400 and are connected to the first parallel interface 110 of the uppermost energy storage device 100 through the third parallel interface 211. The state control unit 212 is configured to control the CAN bus, and is configured to receive a position detection signal and/or a state parameter broadcast by each energy storage device 100 through the CAN bus, and display the position detection signal and/or the state parameter through the display unit 213. When a fault is detected by the presence energy storage device 100, the faulty energy storage device 100 can be quickly located and displayed in the status display means 210.

In one embodiment, as shown in fig. 6, the energy storage system 400 includes the status display device 210, the energy storage apparatus 100, and the base 300, which are stacked in this order from top to bottom. The adjacent state display devices 210 and the energy storage devices 100, the energy storage devices 100 and the bases are connected through the parallel connection terminal 500, circuit wiring CAN be arranged in the parallel connection terminal 500, a communication terminal and a power terminal are arranged, CAN buses in the energy storage devices are connected through the communication terminal, so that the state display devices 210 and the energy storage devices 100 are communicated, and a CAN bus loop is formed with a terminal resistor 310 in the base. Power may also be transferred between the energy storage devices 100 through power terminals. The radio frequency tag 140 and the reader 150 of each energy storage device 100 are symmetrically disposed on the upper and lower sides of each energy storage device 100, respectively. The base is also provided with a radio frequency tag 140 positioned on the underside of the reader 150 of an adjacent energy storage device 100.

The status display device 210 includes a status display control unit 212, which is configured to control the CAN bus, so that the position detection signals sent by the energy storage devices 100 CAN be received through the CAN bus, so that the energy storage devices CAN be ordered according to the position detection signals, and the fault energy storage device CAN be quickly located when the fault occurs to the energy storage device.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (10)

1. An energy storage device, comprising:

the first parallel machine interface is arranged on the energy storage equipment; the first parallel interface is used for being connected with a second parallel interface of the state display device or other energy storage equipment;

the second parallel interface is arranged on the energy storage equipment and is used for being connected with the first parallel interface of the base or other energy storage equipment;

the communication circuit is connected between the communication pin of the first parallel operation interface and the communication pin of the second parallel operation interface;

the radio frequency tag is arranged on the first side of the energy storage device and stores a first identification code of the energy storage device;

the reader-writer is arranged on the second side of the energy storage device and is used for communicating with the radio frequency tag of the adjacent device and reading the second identification code stored in the radio frequency tag; the first side of the energy storage device is set up opposite to the second side of the energy storage device;

the control circuit is connected with the communication circuit and the reader-writer and is used for generating a position detection signal according to the first identification code and the second identification code and outputting the position detection signal through the communication circuit; the position detection signal is used for carrying out position identification of the energy storage device.

2. The energy storage device of claim 1, wherein the radio frequency tag is disposed on a side remote from the first parallel machine interface and the reader is disposed on a side remote from the second parallel machine interface.

3. The energy storage device of claim 1, further comprising a first end cap removably coupled to the first parallel machine interface, the first end cap having the status display device integrated thereon.

4. The energy storage device of claim 3, wherein the status display means comprises:

the third parallel interface is used for being connected with the first parallel interface and comprises a communication pin;

the state control unit is connected with the communication pin of the third parallel interface, so as to receive the position detection signals and/or state parameters transmitted by the communication pin, and acquire the position relation among the energy storage devices based on the position detection signals; and

and the display unit is used for displaying the position relation and/or the state parameter.

5. The energy storage device of claim 1, wherein the control circuit is further configured to receive, via the communication circuit, position detection signals transmitted by other energy storage devices, and to obtain a positional relationship between a plurality of the energy storage devices based on a plurality of the position detection signals; the control circuit is also used for outputting the position relation to other energy storage devices or the state display device through the communication circuit.

6. The energy storage device of claim 1, further comprising a second end cap removably connected to the second parallel machine interface, the second end cap further integrated with a base.

7. The energy storage device of claim 1 or 6, wherein the base comprises a fourth parallel machine interface, a radio frequency tag, and a resistor; the radio frequency tag stores an identification code of the base; the fourth parallel interface is used for being connected with the second parallel interface; and the resistor is connected with a communication pin of the fourth parallel interface to serve as a terminal resistor of the communication circuit.

8. The energy storage device of claim 1, wherein the radio frequency tag comprises an anti-interference means for isolating electromagnetic waves generated by other circuit modules of the energy storage device from interference.

9. An energy storage system, comprising:

a plurality of energy storage devices as defined in any one of claims 1-8; the energy storage devices are connected through the first parallel connection interface or the second parallel connection interface.

10. An energy storage system, further comprising:

the base is provided with a fourth parallel operation interface;

the state display device is provided with a third parallel operation interface; and a plurality of energy storage devices as claimed in any one of claims 1 to 8; the energy storage devices are connected between the base and the state display device through the first parallel connection interface or the second parallel connection interface.