Energy storage system, control method and device, electronic equipment and storage medium

Abstract

The invention discloses an energy storage system, a control method and device, electronic equipment and a storage medium, the energy storage system comprises a plurality of electrical core bins which are electrically connected, and the inner cavity of each electrical core bin is matched with a single battery; each battery cell bin provides a battery access channel exposed at the operable side; and each battery cell bin provides series electrical connection between the battery monomers in the battery cell bin and the corresponding battery cell bin, so that the plurality of battery monomers in the battery cell bin are electrically connected. And when a certain battery monomer needs to be replaced, only the battery monomer needs to be taken out and replaced with a new battery monomer, so that the replacement speed is shortened, and the space required for maintenance is reduced. And along with the deterioration of the battery monomers, the battery monomers with closer performance in the energy storage system are put into the same series branch in real time, so that the efficiency of the whole energy storage system is better, the utilization rate of each battery monomer is greatly improved, and the service life of the whole energy storage system is prolonged.

Description

Technical Field

[0001] The present application relates to an energy storage system, and in particular to an energy storage system and a control method thereof. Background Art

[0002] Energy storage containers are integrated energy storage devices that combine various energy storage technologies with intelligent control systems to achieve efficient energy storage and release. They not only provide emergency power support but also balance grid loads, shift peaks and fill valleys, and improve the utilization of renewable resources. This is crucial for the stability and sustainable development of energy demand.

[0003] The existing energy storage container is composed of multiple battery cells bundled and connected in series to form a battery module. Two to three battery modules are connected in series and installed in a battery pack with a single positive and negative pole connection point. All battery modules in a battery pack are connected to other battery packs through the single positive and negative pole to form a circuit. Multiple battery packs are connected in series to form a battery cluster, and multiple battery clusters are connected in series or in parallel to form the battery system of the energy storage container.

[0004] For several battery cells connected in series, due to the existence of the "water barrel effect", manufacturers will select battery cells with similar health status and connect them in series as a whole when they leave the factory. However, after a period of use or a certain number of charge and discharge times, the health status of each battery cell in a group of battery cells that originally had similar performance changes differently, and some individual batteries may even deteriorate rapidly, resulting in the performance of the entire series branch being restricted.

[0005] Once the above situation occurs, the existing energy storage container structure renders the entire battery pack unusable. A battery cluster contains multiple battery packs, and there is a high probability that a battery cell in a battery cluster will be damaged or severely deteriorated. Therefore, for the energy storage container to continue to function normally, the entire battery pack containing the damaged or severely deteriorated battery cells must be replaced. Due to the large size and weight of the entire battery pack, the lifting equipment involved in replacement is large, resulting in the need to reserve space around the energy storage box to accommodate larger lifting equipment when arranging the energy storage box. The replacement process requires manual participation, which places a high maintenance burden and often cannot be replaced in a timely manner. Furthermore, due to the disconnection of the series circuit of the battery cluster during the replacement process, the entire energy storage container must be shut down from a safety perspective, which is detrimental to the energy density and continuous operation of the energy storage container. On the other hand, replacing the entire battery pack renders many of the remaining batteries in the pack, which still have acceptable performance, unable to continue to serve, resulting in a waste of resources. Summary of the Invention

[0006] Embodiments of the present application provide an energy storage system, a control method, an apparatus, an electronic device, and a storage medium for enabling convenient replacement of battery cells in the energy storage system and extending the service life of the battery cells and the entire energy storage system.

[0007] In a first aspect of the present application, an energy storage system is provided, comprising:

[0008] A plurality of battery cell compartments having electrical connections, wherein the interior cavity of each battery cell compartment is adapted to accommodate a single battery cell;

[0009] Each of the battery cell compartments is provided with a battery access channel exposed to the operable side, so that the battery cells can enter and exit the battery cell compartment through the corresponding access channel;

[0010] Each of the battery cell compartments provides a series electrical connection between the battery cells located in the battery cell compartment and the corresponding battery cell compartment, so that an electrical connection is formed between the multiple battery cells located in the battery cell compartment.

[0011] Furthermore, the access channel of each battery cell compartment is exposed to the operable sides that are interconnected.

[0012] Furthermore, it also includes a robot, which is arranged on the operable side of the battery cell compartment. In response to receiving the battery cell pick-up / placement task, the robot picks / places the battery cell from the corresponding battery cell compartment to allow the battery cell to enter and exit the battery cell compartment.

[0013] Furthermore, a plurality of battery cell bins form a battery cell bin cluster-level structure connected in series, a plurality of battery cell bin cluster-level structures form a parallel connection, and the battery cell bin cluster-level structures are arranged sequentially.

[0014] Furthermore, at least one of the battery cell compartments is provided with a sensor to detect the environment in the battery cell compartment and / or the performance of the battery cells, and the environment or performance includes at least one of the following: temperature, voltage, current, and internal resistance.

[0015] Furthermore, the operable side is also provided with a spare battery area, and the spare battery area is used to store a number of unused battery cells.

[0016] Furthermore, each of the battery cell compartments is provided with a bypass line, and when the battery cell compartment is disconnected from the series electrical connection with the battery cells inside it, the bypass line is short-circuited between the series electrical connection points.

[0017] A second aspect of the embodiments of the present application provides a control method for an energy storage system, which is applied to the energy storage system in the above embodiments. The control method is, in response to a first battery cell satisfying a first exit condition, removing the first battery cell from the first battery cell compartment where it is located, and placing a second battery cell into the first battery cell compartment; wherein the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of the first battery cell than to other battery cells in the series branch where the first battery cell compartment is located.

[0018] Furthermore, before placing the second battery cell into the first battery cell compartment, the method further includes:

[0019] Remove the second battery cell from the second battery cell compartment where it is located or take an unused battery cell as the second battery cell; wherein, the series branch where the second battery cell compartment is located is different from the series branch where the first battery cell compartment is located; the condition for taking an unused battery cell as the second battery cell is: when the first battery cell is located in the series branch with the best performance, and there is no second battery cell that meets the conditions in the remaining series branches.

[0020] Furthermore, after removing the first battery cell from the first battery cell compartment where the first battery cell is located, the method further includes:

[0021] The first battery cell is placed in the third battery cell compartment. Compared with the third battery cell originally stored in the third battery cell compartment, the performance of the first battery cell is closer to other battery cells in the series branch where the third battery cell compartment is located.

[0022] Furthermore, before responding to the first battery cell meeting the first exit condition, the method further includes:

[0023] A battery wall is formed by forming a battery cell cluster structure by forming a series connection between multiple battery cell bins, and by forming a parallel connection between multiple battery cell cluster structures, and arranging the battery cell cluster structures in sequence;

[0024] Measure the performance of each battery cell and sort all battery cells from high to low performance;

[0025] The battery cells are placed into the battery wall one by one in the sorting order and in a single direction of parallel connection of the battery wall.

[0026] A third aspect of the present application provides a control device for an energy storage system, which is applied to the energy storage system in the above-mentioned embodiment, comprising:

[0027] The first battery cell replacement unit is used to remove the first battery cell from the first battery cell compartment where it is located and place the second battery cell into the first battery cell compartment in response to the first battery cell satisfying the first exit condition; wherein the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of other battery cells in the series branch where the first battery cell compartment is located than that of the first battery cell.

[0028] The fourth aspect of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the electronic device implements a method as described in any one of the above embodiments.

[0029] According to a fifth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium is used to store a computer program. When the computer program is run on a computer, the computer executes the method described in any one of the above embodiments.

[0030] The sixth aspect of the present application provides a computer program product, which, when run on an electronic device, enables the computer to execute any one of the methods described in the above embodiments.

[0031] The energy storage system, control method, device, electronic device and storage medium provided in the embodiments of the present application provide a battery cell compartment for each battery cell, and through the electrical connection between the battery cell compartment and the battery cell and the electrical connection between the battery cell compartments, an electrical connection is formed between the battery cells for energy storage. When a battery cell in the above energy storage system needs to be replaced, it is only necessary to remove the battery cell from the battery cell compartment and replace it with a new battery cell. Since the battery cell is light and small in size, the replacement speed and the space required for replacement and maintenance can be shortened, and it can even be replaced automatically by a robot, without the need for direct human participation in the replacement.

[0032] Based on the above structure, the embodiments of the present application can also realize that during the operation of the energy storage system, as the battery cells deteriorate, the battery cells with closer performance in the energy storage system can be placed in the same series branch in real time, so that the performance of each battery cell in the series branch, the entire series branch and even the entire energy storage system can be better exerted. In addition, the above method realizes the precise management of battery cells, and the battery cells can be eliminated after their performance is exhausted, which greatly improves the utilization rate of each battery cell and thereby extends the life of the entire energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the overall structure of the battery cell compartment in the embodiment of the present application;

[0035] Figure 2 Schematic diagram of the cross-sectional structure of the battery cell compartment in the embodiment of the present application;

[0036] Figure 3 This is a schematic diagram of the structure of the battery wall and the robot in the embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the structure inside the energy storage container in an embodiment of the present application;

[0038] Figure 5 is a flow chart of a control method for an energy storage system in an embodiment of the present application;

[0039] Figure 6 Schematic diagram of the structure of the control device of the energy storage system in an embodiment of the present application;

[0040] Figure 7 It is a schematic diagram of the hardware structure of the electronic device in the embodiment of the present application.

[0041] In the figures, the meanings of the reference numerals are as follows:

[0042] 1- Warehouse body; 2- Warehouse door; 11- Pressure-bearing part; 12- First conductive part; 13- Spring; 14- Base part; 15- Cooling plate; 16- Rear cavity; 17- Bottom plate; 18- Second conductive part; 21- Push-button door lock; 3- Battery cell wall; 4- Clamp; 5- Horizontal guide rail; 6- Vertical guide rail; 7- New battery cell warehouse; 8- Damaged battery cell warehouse; 100- Robot; 200- Energy storage container. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0046] like Figure 1 The figure is a schematic diagram of the structure of the battery cell compartment in the embodiment of the present application, which is composed of Figure 1 It can be seen that the battery cell compartment includes a plurality of outer walls, which enclose a hollow inner cavity, and the inner cavity is adapted to a single battery cell.

[0047] The battery cell compartment provides a battery access channel exposed to the operable side, so that the battery cells can enter and exit the battery cell compartment through the corresponding access channel; in the figure, the inner cavity has an opening, which realizes the connection between the inner cavity and the outside, and the inner cavity also serves as the battery access channel.

[0048] The battery cell compartment is provided with an electrical connection point for connecting the battery cell compartment to a circuit, and the electrical connection point also provides a series electrical connection between the battery cells located in the battery cell compartment and the corresponding battery cell compartment to connect the battery cells to the circuit.

[0049] The above-described cell compartment structure allows for easy movement of battery cells into and out of the cell compartment, and electrical connections between the cell compartments and the battery cells, as well as between the cell compartments themselves, enable electrical connections between the battery cells. Consequently, the cooperation between the cell compartments and the battery cells allows for rapid replacement of individual battery cells due to their small size and light weight. In certain preferred embodiments, the robot 100 can control the gripper 4 to grasp the battery cells and move them in and out of the cell compartment to facilitate replacement.

[0050] The battery cells may be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., and the embodiments of the present application are not limited to this.

[0051] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, located between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0052] As an example, the battery cell can be a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, and a polygonal battery cell. The polygonal battery cell is, for example, a hexagonal battery cell, etc. There is no special limitation in this application.

[0053] like Figure 1 As shown, in an embodiment of the present invention, the battery cell compartment is overall long and straight, and is used to adapt to a battery cell that is approximately rectangular. The battery cell is provided with positive and negative electrodes, and its inner cavity wall is provided with a plurality of grooves along the depth direction of the inner cavity for movement of the clamping claw 4 that grasps the battery cell.

[0054] In order to secure the battery cells within the battery compartment, a position limiting structure is provided on the battery compartment. In certain embodiments, a compartment door 2 is provided on the battery compartment to expose or close the inner cavity relative to the operable side. When exposed relative to the operable side, the battery cells can be moved from outside the battery compartment to inside the battery compartment or from outside the battery compartment to inside the battery compartment through the battery access channel. When closed relative to the operable side, the battery cells cannot enter or exit the battery compartment.

[0055] When the compartment door 2 is closed, the battery cell is fixed in the inner cavity of the battery compartment and connected to the electrical connection point. When the compartment door 2 is open, the battery cell is disconnected from the battery compartment. By switching between these different electrical connection methods, the battery cell can be connected to and removed from the circuit during movement.

[0056] Since the battery cells are connected in series with the cell compartment, an open circuit will be formed at the cell compartment when the battery cells are disconnected from the cell compartment. Therefore, in some embodiments, the cell compartment also provides a bypass line. When the battery cells need to be disconnected from the cell compartment, the bypass line is preferably short-circuited between the series electrical connection points before the series electrical connection between the cell compartment and the battery cells is disconnected. In this way, when the battery cells are disconnected from the cell compartment, the series branch where the cell compartment is located remains connected.

[0057] In certain embodiments, as Figure 1 and Figure 2 As shown, the door 2 is a flip-top type. The door 2 and the battery cell compartment are locked by pressing a door lock 21.

[0058] In some preferred embodiments, a cooling plate 15 is provided on the battery cell compartment. The cooling plate 15 is used to cool and dissipate heat from the battery cell. The cooling plate 15 can be water-cooled, and a cooling water pipe is built into the cooling plate 15.

[0059] In certain preferred embodiments, Figure 2 As shown, the battery cell compartment includes:

[0060] A chamber body 1 having an openable inner cavity;

[0061] A bottom plate 17 is fixed to the bottom of the inner cavity, and a first conductive member 12 is fixed on the side of the bottom plate 17 facing the inner cavity as an electrical connection point connected to the two electrodes of the battery cell. A second conductive member 18 is fixed on the other side of the bottom plate 17, and the second conductive member 18 is electrically connected in series with the first conductive member 12.

[0062] It also includes a sliding assembly, which includes a pressure-bearing part 11, a connecting part and a base part 14. The pressure-bearing part 11 and the base part 14 are respectively located on both sides of the bottom plate 17, and the pressure-bearing part 11 is located on one side of the inner cavity. The connecting part passes through the bottom plate 17 and connects the pressure-bearing part 11 and the base part 14, so that the first conductive member 12 and the second conductive member 18 are accommodated between the pressure-bearing part 11 and the base part 14; the pressure-bearing part 11 provides a first through hole adapted to the electrode of the single cell so that when the end where the electrode of the single cell is located is pressed on the pressure-bearing part 11, the electrode of the single cell passes through the first through hole to the area where the first conductive member 12 is located.

[0063] A pre-compressed spring 13 is provided between the pressure-bearing part 11 and the bottom plate 17. Preferably, the connecting part is a columnar structure, and the spring 13 is sleeved on the connecting part. A short-circuit wire adapted to the second conductive member 18 is also provided on the base part 14 as a bypass line. When the base part 14 moves toward the side of the bottom plate 17, the bypass line contacts the second conductive member 18 and short-circuits it.

[0064] In some specific embodiments, each of the first conductive member 12 and the second conductive member 18 includes two columns corresponding to the positive and negative electrodes, respectively, and a one-to-one electrical connection is also formed between the columns of the first conductive member 12 and the second conductive member 18.

[0065] Through the above structure, when placing a battery cell into the battery cell compartment, the side where the electrode of the battery cell is located is facing the bottom plate 17, and the battery cell is moved from the open side of the compartment body 1 to the side of the bottom plate 17. The battery cell first contacts the pressure-bearing part 11, and the electrode of the battery cell is exposed to the area where the first conductive member 12 is located. However, when the battery cell just contacts the pressure-bearing part 11, the electrode of the battery cell has not yet contacted the first conductive member 12. The battery cell continues to move toward the bottom plate 17 of the battery cell compartment against the pressure-bearing part 11. During this process, the entire sliding assembly moves synchronously, and then the electrode of the battery cell moves to contact the first conductive member 12 to achieve series connection between the battery cell and the battery cell compartment.

[0066] When removing a battery cell from the cell compartment, the compartment door 2 is opened, removing the retaining force on the battery cell. The battery cell moves toward the open side of the compartment body 1, disconnecting the battery cell's electrode from the first conductive member 12. During this process, due to the action of the pre-compression spring 13, the sliding assembly initially moves in the direction of the battery cell's movement, returning the sliding assembly to its original position. During this return, the base portion 14 located on the side of the second conductive member 18 simultaneously moves toward the second conductive member 18, thereby overlapping the shorting wire on the base with the second conductive member 18 to achieve a short circuit.

[0067] In some preferred embodiments, the door 2 has an elastic switch. Since the door 2 retreats toward the outside of the warehouse to a certain extent when closed, in order to enable the door 2 to cooperate with the inner cavity to achieve good positioning of the battery cell, a spring 13 is connected between the first conductive part 12 and the bottom plate 17. When the battery cell moves into the warehouse and contacts the first conductive part 12, the spring 13 is compressed and shortened. When the door 2 is closed and retreated, the spring 13 rebounds a certain distance so that the first conductive part 12 always maintains connection with the electrode.

[0068] In certain preferred embodiments, to prevent expansion due to high internal pressure, a second through-hole is provided on the pressure-receiving portion 11 and the bottom plate 17, or on the pressure-receiving portion 11, the bottom plate 17, and the base portion 14. The second through-hole faces the end face of the single cell. Any released gas is discharged from the internal cavity through the second through-hole, thereby reducing pressure in the single cell and the internal cavity.

[0069] like Figure 1 As shown, in some embodiments, the battery cell compartment further includes a cover, which is fixed to the compartment body 1 and disposed outside the base portion 14 so that the base portion 14 is built-in. Figure 1 As shown, the cover is located at the rear of the inner cavity, and a rear cavity 16 is formed between the cover and the inner cavity bottom plate 17. The base part 14 is located in the cavity, which is beneficial to protect the base part 14 from being affected by dust, water vapor, etc.

[0070] like Figure 3-4 The above is a schematic diagram of the structure of an energy storage system provided in other embodiments of the present invention. The energy storage structure is used to power electrical devices, such as vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools. The embodiments of this application do not impose any special restrictions on the above-mentioned electrical devices.

[0071] In the figure, the energy storage system includes:

[0072] A plurality of battery cell compartments are provided with electrical connections, wherein the inner cavity of each battery cell compartment is adapted to accommodate a single battery cell. Each of the battery cell compartments of the energy storage system can adopt the structure of each of the above battery cell compartment embodiments.

[0073] Each cell compartment provides a battery access channel exposed on the operable side, allowing the battery cells to enter and exit the corresponding cell compartment through the corresponding access channel. That is, after assembly, each cell compartment still retains its respective battery access channel located on the operable side, which does not affect the operation of removing and placing batteries in each cell compartment.

[0074] Each of the battery cell compartments provides a series electrical connection between the battery cells located in the battery cell compartment and the corresponding battery cell compartment, so that an electrical connection is formed between the multiple battery cells located in the battery cell compartment.

[0075] The energy storage system is composed of the above-mentioned battery cell compartments. When a battery cell in the above-mentioned energy storage system needs to be replaced, it is only necessary to take out the battery cell from the battery cell compartment and replace it with a new battery cell. At the same time, the battery cell can be quickly connected to and disconnected from the circuit. Since the battery cell is light and small in size, the replacement speed and the space required for replacement and maintenance can be shortened.

[0076] To facilitate simultaneous operation of the battery cells in each cell compartment, in certain embodiments, the access channel of each cell compartment is exposed to interconnected operable sides. Operation of the target cell compartment can be achieved by moving to the corresponding cell compartment position within the operable side area.

[0077] In certain preferred embodiments, the energy storage system further includes a robot 100, which is disposed on the operable side of the battery cell compartment. In response to receiving a battery cell pick-up / placement task, the robot 100 picks / places battery cells from the corresponding battery cell compartment to allow the battery cells to enter and exit the battery cell compartment.

[0078] like Figure 3 and Figure 4 As shown, a cell wall 3 is formed by combining multiple cell compartments. In these embodiments, the exterior of the cell compartments is a relatively regular structure, such as the rectangular parallelepiped structure used in this embodiment, so that the multiple cell compartments can be easily stacked and fixed to each other. The fixation between the cell compartments can preferably be detachable. As shown in the figure, multiple cell compartments are stacked in sequence in the vertical direction to give the cell wall 3 a certain height. Multiple cell compartments are also stacked in sequence in the horizontal direction to give the cell wall 3 a certain width. When arranged, the inner cavity of each cell compartment is arranged along a plane perpendicular to the vertical and horizontal directions, and the opening of the inner cavity is located on the same side of the cell wall 3.

[0079] As a preferred embodiment, the battery cell wall 3 is further provided with a new battery cell warehouse 7 and a damaged battery cell warehouse 8, and their composition can be a battery cell warehouse with the same appearance as the battery cell wall 3 in the above embodiment, but these battery cell warehouses are not connected to the circuit, and their positions can be integrated with the battery cell wall 3, preferably arranged on both sides of the battery cell wall 3, one side as a new battery cell warehouse 7, and the other side as a damaged battery cell warehouse 8.

[0080] Specifically, such as Figure 3 As shown, it is a structural schematic diagram of a battery cell wall 3, in which a robot 100 is arranged on the side of the opening of the inner cavity of the battery cell warehouse in the battery cell wall 3, and a horizontal guide rail 5 arranged parallel to the battery cell wall 3 is provided at the bottom of the robot 100. The motor that drives the automated robot 100 to move along the horizontal guide rail 5 is defined as an X-axis motor, and the robot 100 includes a vertical guide rail 6 and a mechanical clamp that moves along the vertical guide rail 6. The motor that drives the mechanical clamp to move along the vertical guide rail 6 is defined as a Z-axis motor, and the mechanical clamp includes a clamping jaw 4 that can be extended back and forth. The motor that drives the clamping jaw 4 to be extended back and forth is defined as a Y-axis motor. The X-axis motor, Y-axis motor and Z-axis motor are communicatively connected to the PLC control system and receive a drive signal from the PLC control system.

[0081] To facilitate calculation, the first battery cell in the lower left corner of the battery cell wall 3 can be set as the coordinate origin, with the length direction of the battery cell wall 3 as the positive direction of the X-axis, and the height direction as the positive direction of the Y-axis. Each battery cell on the battery cell wall 3 corresponds to a unique X-axis and Y-axis coordinate. The coordinate information of each battery cell is pre-input into the PLC control system. When the battery cell needs to be replaced, the PLC control system sends a drive signal of the X-axis motor, Y-axis motor and Z-axis motor to control the gripper 4 to move to the coordinate position of the corresponding battery cell. By controlling the start and stop of the X-axis motor, Y-axis motor and Z-axis motor respectively, the displacement of the gripper 4 can be precisely controlled. After moving to the corresponding position, the gripper 4 takes out the battery cell from the battery cell wall 33 and replaces it with a new one.

[0082] In certain embodiments, the robot 100 performs the following operations: obtaining the coordinate information of the location of the battery cell to be removed, transmitting the coordinate information to a PLC control system, and the PLC control system controlling the start and stop of the X-axis motor, the Y-axis motor, and the Z-axis motor based on the received coordinate information, thereby moving the gripper 4 to a designated position, opening the battery cell compartment door 2 (which can be opened by system control or by operation of the robot 100), extending the gripper 4 into the compartment body 1, gripping the battery cell, and then driving the battery cell out of the compartment. If the battery cell has a corresponding new cell compartment to be loaded, the robot 100 drives the gripper 4 to move to the location of the new cell compartment, placing the battery cell into the new cell compartment, and then withdrawing the gripper 4. The compartment door 2 of the new cell compartment is closed (which can be closed by system control or by operation of the robot 100). If the battery cell is no longer serviceable, it is grabbed and taken to a battery recovery area, such as the damaged cell storage 8 in the above-mentioned embodiment, and no longer participates in energy storage.

[0083] In some other embodiments, see Figure 4 The schematic diagram of the energy storage container 200 shown in FIG. A single energy storage container 200 includes two battery cell walls 3, with the battery cells mounted on opposite sides of the walls 3. The robot 100 is positioned between the two walls 3. The robot 100 is equipped with a steering mechanism that controls the direction of its grippers 4. The grippers 4 on the automated robot 100 simultaneously remove and replace battery cells on both walls 3 by rotating the steering mechanism. The two battery cell walls 3 increase the number of battery cells, significantly increasing the energy capacity of the energy storage container 200. While only one robot 100 is required, this saves floor space and ensures high energy storage density.

[0084] In addition to the energy storage container 200 , this embodiment can also be applied to other forms of energy storage systems, such as energy storage cabinets.

[0085] In some other embodiments, more battery cell walls 3 may be provided, and a path for the robot 100 to walk may be established between the battery cell walls 3. The path may be implemented by a track, such as a track arranged on the bottom plate 17 of the energy storage container 200 as shown in the above embodiment, or a track arranged in the air or a track arranged on the top plate of the container. The path may also be implemented without a track, for example, by using a trackless robot 100 that can move freely.

[0086] In the above embodiments, to more scientifically and efficiently manage and operate the battery cells and, in turn, the entire cell wall 3, multiple cell compartments are connected in series to form a cell compartment cluster structure. Multiple cell compartment cluster structures are connected in parallel, and the cell compartment cluster structures are arranged sequentially. This way, due to the barrel effect of series connection, the performance of the battery cells within the same cell compartment cluster structure should be as close as possible, allowing the cluster structure to achieve maximum efficiency.

[0087] In certain embodiments, at least one of the battery cell compartments is equipped with a sensor to monitor the environment within the compartment and / or the performance of the battery cells, including at least one of the following: temperature, voltage, current, and internal resistance. Accurate monitoring of the compartment and the battery cells through these sensors facilitates understanding the operating status of each battery cell, facilitating decision-making regarding the management of that battery cell.

[0088] In some embodiments, the operable side is further provided with a spare battery area for storing a number of unused battery cells. When a battery cell in the cell wall 3 is missing due to various reasons, the cell wall 3 can be replenished with the battery cells in the spare battery area.

[0089] In certain preferred embodiments, each cell compartment further comprises a bypass line. When the cell compartment is disconnected from the series electrical connection with the battery cells within it, the bypass line is short-circuited between the series electrical connection points. The bypass line can be implemented using the structure of the cell compartment embodiment described above. Whether the bypass line is short-circuited is automatically switched by the movement of the battery cells, without the need for an additional control system.

[0090] An embodiment of the present invention further provides a control method for an energy storage system, which is applied to the energy storage system in each of the above embodiments. The method includes:

[0091] Step S102: In response to a first battery cell satisfying a first exit condition, the first battery cell is taken out from the first battery cell compartment where it is located, and a second battery cell is placed into the first battery cell compartment; wherein, the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of the first battery cell than that of other battery cells in the series branch where the first battery cell compartment is located.

[0092] When the energy storage system is first put into use, the performance of each battery cell and each series branch is almost the same. The above method is implemented during the use of the energy storage system. By setting the first exit condition, it is determined whether the battery cell meets the condition to determine whether the battery cell needs to be removed from the battery cell compartment, and a battery cell that is more suitable for the battery cell compartment is replaced, thereby realizing the management of the battery cells and battery cell compartments. Applying the above method to the entire energy storage system can achieve the purpose of replacing battery cells individually during the use of the entire energy storage system. It is convenient and efficient, and the performance of the battery cells in the series branches is made closer by replacement, thereby making the efficiency of the entire series branch better. Implementing the above scheme for each series branch in the entire energy storage system can ensure that the efficiency of each series branch can be maximized, thereby ultimately maximizing the overall efficiency of the entire energy storage system.

[0093] The performance includes but is not limited to the internal resistance, life, capacity, etc. of the battery.

[0094] The second battery cell is used as a battery to replace the first battery cell, and its source depends on different situations. Therefore, in some preferred embodiments, before placing the second battery cell into the first battery cell compartment, the method further includes:

[0095] Step S101: Remove the second battery cell from the second battery cell compartment where it is located, or use an unused battery cell as the second battery cell; wherein the second battery cell compartment is located in a different series branch than the first battery cell compartment; the condition for using an unused battery cell as the second battery cell is when the first battery cell is located in the series branch with the best performance, and there are no other qualified second battery cells in the remaining series branches. In other words, in this embodiment, a battery cell already in use in the battery cell wall 3 is preferentially selected as a replacement. Only when there are no suitable battery cells in the battery cell wall 3 is an unused battery cell selected, such as one from the new battery cell bank 7 in the above-described embodiment, as the second battery cell. More preferably, in certain implementations, when a replacement is needed for the series branch with the best performance, there may be no suitable battery cells available as replacements because the performance of the remaining series branches is inferior to that of the branch. Therefore, an unused battery cell is required as the replacement.

[0096] In certain preferred embodiments, since the first battery cell may not have reached the level of being scrapped, it only meets the first removal condition in the current series branch where it is located, and its use as a replacement in the remaining series branches can improve the performance of the branches, the first battery cell can be placed in the remaining series branches as a replacement. Therefore, after removing the first battery cell from the first battery cell compartment where it is located, the following further includes:

[0097] Step S103: Place the first battery cell into the third battery cell compartment. Compared with the third battery cell originally stored in the third battery cell compartment, the performance of the first battery cell is closer to other battery cells in the series branch where the third battery cell compartment is located.

[0098] On the basis of the above method, in order to facilitate management and consider a better replacement path for battery cells, in certain preferred embodiments, a cell cluster-level structure in which multiple cell cells are connected in series, a plurality of cell cluster-level structures are connected in parallel, and the cell cluster-level structures are arranged in sequence to form a cell wall 3 of a wall structure, and the cell wall 3 is divided into different battery performance areas according to a certain preset order. For example, the cell wall 3 is arranged from left to right with the cell cluster-level structure as the basic unit. As the above method is executed, the basic units are arranged in a decreasing or increasing manner in terms of performance.

[0099] In certain specific embodiments, the method is implemented by sequentially arranging a plurality of cell bin cluster-level structures to form a battery wall by forming a series connection between the plurality of cell bins and a parallel connection between the plurality of cell bin cluster-level structures. Before responding to the first battery cell satisfying the first exit condition, the method further includes:

[0100] Step S1001: Measure the performance of each battery cell and sort all battery cells in descending order of performance;

[0101] Step S1002: Place the battery cells one by one into the battery wall in the order of the sorting and in a single direction of the battery wall being connected in parallel.

[0102] In the above manner, taking the performance decreasing from left to right as an example, the cluster with the best performance among the battery cells is on the far left, followed by the cluster with the second best performance next to the far left, and then the cluster with the second best, medium, poor performance, and finally the cluster with the worst performance is on the far right.

[0103] Through the above method, each battery cell is located in a series branch adapted to its real-time performance. Under normal circumstances, as its performance gradually deteriorates, once it meets the need to be removed from the current series branch, it gradually experiences different clusters from good to poor performance, and through multiple adjustments, it is finally removed from the cluster with the worst performance and released from service. For this battery cell, its utilization rate is high and the battery efficiency is maximized. For the entire energy storage system, if each battery is applied in a similar manner, the life of the energy storage system can be greatly improved.

[0104] Furthermore, although the operations of the method of the present application are described in a particular order in the accompanying drawings, this does not require or imply that the operations must be performed in this particular order, or that all illustrated operations must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0105] An embodiment of the present invention further provides a control device for an energy storage system, which is applied to the energy storage system described in each of the above embodiments, including:

[0106] The first battery cell replacement unit is used to remove the first battery cell from the first battery cell compartment where it is located and place the second battery cell into the first battery cell compartment in response to the first battery cell satisfying the first exit condition; wherein the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of other battery cells in the series branch where the first battery cell compartment is located than that of the first battery cell.

[0107] By setting the first exit condition, it is determined whether the battery cell meets the condition to decide whether the battery cell needs to be removed from the battery cell compartment, and a battery cell that is more suitable for the battery cell compartment is replaced, thereby realizing the management of the battery cell and the battery cell compartment. Applying the above method to the entire energy storage system can achieve the purpose of replacing battery cells individually during use of the entire energy storage system, which is convenient and efficient, and the performance of the battery cells in the series branches is made closer by replacement, thereby making the efficiency of the entire series branch better. Implementing the above scheme for each series branch in the entire energy storage system can ensure that the efficiency of each series branch can be maximized, thereby ultimately maximizing the overall efficiency of the entire energy storage system.

[0108] In some embodiments, the control device further comprises:

[0109] The second battery cell replacement unit is used to place the first battery cell into the third battery cell compartment. Compared with the third battery cell originally stored in the third battery cell compartment, the performance of the first battery cell is closer to other battery cells in the series branch where the third battery cell compartment is located.

[0110] In some embodiments, the control device further comprises:

[0111] The third battery cell replacement unit is used to place the first battery cell into the third battery cell compartment. Compared with the third battery cell originally stored in the third battery cell compartment, the performance of the first battery cell is closer to other battery cells in the series branch where the third battery cell compartment is located.

[0112] In some embodiments, the control device further comprises:

[0113] A measurement and sorting unit is used to measure the performance of each battery cell and sort all battery cells from high to low in terms of performance;

[0114] A sequential arrangement unit is used to place the battery cells one by one into the battery wall according to the sorting order and in a single direction of parallel connection of the battery walls.

[0115] It should be noted that although several units or subunits of the device are mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, depending on the embodiment of the application, the features and functions of two or more units described above can be embodied in a single unit. Conversely, the features and functions of a single unit described above can be further divided and embodied by multiple units.

[0116] Based on the same inventive concept as the above-mentioned method embodiment, an electronic device is also provided in an embodiment of the present application, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the computer program, the electronic device implements the control method in the above-mentioned embodiment.

[0117] In one embodiment, the electronic device may be a server. In this embodiment, the structure of the electronic device may be as follows: Figure 7 As shown, it includes a memory 2001 , a communication module 2003 and one or more processors 2002 .

[0118] Memory 2001 is used to store computer programs executed by processor 2002. Memory 2001 may primarily include a program storage area and a data storage area. The program storage area may store an operating system and programs required for running instant messaging functions, while the data storage area may store various instant messaging messages and operating instruction sets.

[0119] Memory 2001 may be a volatile memory, such as random-access memory (RAM); a non-volatile memory, such as read-only memory, flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or any other medium capable of carrying or storing a desired computer program in the form of instructions or data structures and accessible by a computer, but is not limited thereto. Memory 2001 may be a combination of the aforementioned memories.

[0120] The processor 2002 may include one or more central processing units (CPUs) or digital processing units, etc. The processor 2002 is configured to implement the above-mentioned audio data processing method when calling the computer program stored in the memory 2001 .

[0121] The communication module 2003 is used to communicate with terminal devices and other servers.

[0122] The specific connection medium between the memory 2001, the communication module 2003 and the processor 2002 is not limited in the embodiment of the present application. Figure 7 In the embodiment, the memory 2001 and the processor 2002 are connected via a bus 2004. The bus 2004 is connected to the processor 2002 via a bus 2004. Figure 7 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus 2004 can be divided into an address bus, a data bus, a control bus, etc. For ease of description, Figure 7 The diagram shows a single thick line, but this does not indicate that there is only one bus or one type of bus.

[0123] Based on the same inventive concept as the above-mentioned method embodiment, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and when the computer program is run on a computer, the electronic device implements the control method in the above-mentioned embodiment. The computer-readable storage medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0124] Based on the same inventive concept as the above-mentioned method embodiment, an embodiment of the present invention further provides a computer program product, which includes a computer program. When the program product is run on an electronic device, the computer program is used to enable the electronic device to execute the steps of the control method according to the various exemplary embodiments of the present application described above in this specification. The program product can adopt any combination of one or more readable media. These computer program commands can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the commands executed by the processor of the computer or other programmable data processing device generate commands for implementing the steps in the process Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0125] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

Claims

1. Energy storage system, characterized in that, include: A plurality of battery cell compartments having electrical connections, wherein the interior cavity of each battery cell compartment is adapted to accommodate a single battery cell; Each of the battery cell compartments is provided with a battery access channel exposed to the operable side, so that the battery cells can enter and exit the battery cell compartment through the corresponding access channel; Each of the battery cell compartments provides a series electrical connection between the battery cells located in the battery cell compartment and the corresponding battery cell compartment, so that an electrical connection is formed between the multiple battery cells located in the battery cell compartment.

2. The energy storage system according to claim 1, characterized in that The access channel of each battery cell compartment is exposed to the operable sides that are interconnected.

3. The energy storage system according to claim 2, characterized in that: It also includes a robot, which is arranged on the operable side of the battery cell bin. In response to receiving a battery cell pick-up / placement task, the robot picks up / places battery cells from the corresponding battery cell bin to allow the battery cells to enter and exit the battery cell bin.

4. The energy storage system according to claim 1, characterized in that A plurality of battery cell bins form a battery cell bin cluster-level structure connected in series, a plurality of battery cell bin cluster-level structures form a parallel connection, and the battery cell bin cluster-level structures are arranged sequentially.

5. The energy storage system according to claim 1, characterized in that: At least one of the battery cell compartments is provided with a sensor to detect the environment in the battery cell compartment and / or the performance of the battery cells, wherein the environment or performance includes at least one of the following: temperature, voltage, current, and internal resistance.

6. The energy storage system according to claim 1, characterized in that The operable side is further provided with a spare battery area, and the spare battery area is used to store a number of unused battery cells.

7. The energy storage system according to any one of claims 1 to 6, characterized in that: Each cell compartment further provides a bypass line, which is short-circuited between the series electrical connection points when the cell compartment is disconnected from the battery cells inside it.

8. A control method for an energy storage system, applied to the energy storage system according to any one of claims 1 to 7, characterized in that: In response to a first battery cell satisfying a first exit condition, the first battery cell is taken out from the first battery cell compartment where it is located, and a second battery cell is placed in the first battery cell compartment; wherein, the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of the first battery cell than that of the other battery cells in the series branch where the first battery cell compartment is located.

9. The method according to claim 8, characterized in that Before placing the second battery cell into the first battery cell compartment, the method further comprises: Remove the second battery cell from the second battery cell compartment where it is located or take an unused battery cell as the second battery cell; wherein, the series branch where the second battery cell compartment is located is different from the series branch where the first battery cell compartment is located; the condition for taking an unused battery cell as the second battery cell is: when the first battery cell is located in the series branch with the best performance, and there is no second battery cell that meets the conditions in the remaining series branches.

10. The method according to claim 8, characterized in that After the first battery cell is removed from the first battery cell compartment where the first battery cell is located, the method further includes: The first battery cell is placed in the third battery cell compartment. Compared with the third battery cell originally stored in the third battery cell compartment, the performance of the first battery cell is closer to other battery cells in the series branch where the third battery cell compartment is located.

11. The method according to claim 8, characterized in that Before the first battery cell meets the first exit condition, the method further includes: A battery wall is formed by forming a battery cell cluster structure by forming a series connection between multiple battery cell bins, and forming a parallel connection between multiple battery cell cluster structures, and arranging the battery cell cluster structures in sequence; Measure the performance of each battery cell and sort all battery cells from high to low performance; The battery cells are placed into the battery wall one by one in the sorting order and in a single direction of parallel connection of the battery wall.

12. A control device for an energy storage system, applied to the energy storage system according to any one of claims 1 to 7, characterized in that: include: The first battery cell replacement unit is used to remove the first battery cell from the first battery cell compartment where it is located and place the second battery cell into the first battery cell compartment in response to the first battery cell satisfying the first exit condition; wherein the first exit condition is that the performance of the first battery cell is inferior to that of other battery cells in the series branch where the first battery cell compartment is located, and there is a second battery cell whose performance is closer to that of other battery cells in the series branch where the first battery cell compartment is located than that of the first battery cell.

13. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the electronic device implements the method according to any one of claims 8 to 11.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium is used to store a computer program, and when the computer program is run on a computer, the computer is caused to perform the method according to any one of claims 8 to 11.

15. A computer program product, characterized in that When the computer program product is run on an electronic device, the electronic device is enabled to execute the control method according to any one of claims 8 to 11.

Images