Energy storage balancing and regulating device based on dynamic time slice electric energy exchange

Abstract

The utility model relates to the technical field of power storage and distribution, and provides an energy storage balancing and regulating device based on dynamic time slice electric energy exchange, which comprises a plurality of battery packs in an energy storage battery pack, and the battery packs are formed by connecting battery monomers in series through a plurality of battery monomer series switches and then connecting the battery monomers in parallel with a battery monomer bypass switch; the battery monomer sensor is connected in parallel with the battery monomer, and the battery monomer sensor performs index detection on the battery monomer; the plurality of battery packs are connected in parallel with the battery pack sensor, and the battery pack sensor performs index detection on the plurality of battery packs; the battery pack sensor is electrically connected with the controller, and the controller is electrically connected with the energy storage battery pack. According to the utility model, the controller controls the energy storage battery pack to generate energy slices to carry out equalization regulation and control, so that the traditional passive equalization energy is prevented from being directly dissipated in the form of heat and the like, and the loss in the active equalization energy transfer process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of energy storage and distribution technology, and in particular to an energy storage balancing and control device based on dynamic time-slice power exchange. Background Technology

[0002] Existing battery management systems primarily employ balancing strategies to address inconsistencies (referring to differences in voltage, capacity, internal resistance, etc., among individual cells in a battery pack; these inconsistencies widen during use, leading to rapid damage to weaker cells and ultimately rendering the entire battery pack unusable). There are two main types: passive balancing, also known as energy dissipation balancing, works by connecting a resistor in parallel to each cell. When a cell is prematurely charged and needs to continue charging other cells, the resistor releases heat from the higher-voltage cell, allowing more charging time for the others. This method is technologically mature, low-cost, and suitable for small-capacity, low-cell-count lithium battery packs. However, passive balancing suffers from low energy utilization because the released energy cannot be reused, and long-term use may lead to battery performance degradation. Another type is active balancing, also known as non-dissipative balancing. Its principle is to transfer energy from high-energy cells to low-energy cells during charge and discharge cycles, thus redistributing the charge within the battery pack, thereby shortening charging time and extending discharge life. Compared to passive balancing, active balancing has the advantages of higher energy utilization, ensuring battery consistency, and extending the battery pack's lifespan and mean time between failures (MTBF).

[0003] However, active balancing has drawbacks including technical complexity and high procurement costs; frequent circuit switching may increase internal battery stress, accelerate battery aging, and thus affect battery life; energy transfer also involves losses; and when the balancing module malfunctions or detects inaccurate voltage, balancing may fail, leading to overcharging or over-discharging and posing potential safety risks. There is indeed room for further improvement in balancing management during the charging and discharging process to enhance energy storage cycle efficiency. Utility Model Content

[0004] This invention provides an energy storage balancing and regulation device based on dynamic time-slice power exchange, which addresses the shortcomings of existing active balancing technologies, including technical complexity and high procurement costs; frequent circuit switching may increase internal stress in the battery, accelerate the battery aging process, and thus affect battery life; energy transfer also involves losses; and when the balancing module malfunctions or the detected voltage is inaccurate, the balancing regulation may fail, leading to overcharging and over-discharging, which poses potential safety risks.

[0005] This utility model provides an energy storage balancing and control device based on dynamic time-slice power exchange, comprising:

[0006] An energy storage battery pack, wherein the energy storage battery pack includes multiple battery groups, and the multiple battery groups include individual battery cells, individual battery cell sensors, individual battery cell series switches, and individual battery cell bypass switches;

[0007] The battery pack is formed by connecting multiple battery cells in series with a series switch, and then connecting them in parallel with a battery cell bypass switch.

[0008] The battery cell sensor is connected in parallel with the battery cell, and the battery cell sensor is used to detect the indicators of the battery cell.

[0009] The multiple battery packs are connected in parallel with the battery pack sensor, which is used to detect the indicators of the corresponding battery packs.

[0010] The individual battery cell sensor is electrically connected to the controller, and the battery pack sensor is electrically connected to the controller. The controller controls the energy storage battery pack to generate energy slices for equalization and regulation.

[0011] According to the energy storage balancing and control device based on dynamic time-slice power exchange provided by this utility model, it further includes:

[0012] A converter branch, which is electrically connected to the energy storage battery pack;

[0013] A converter branch sensor is electrically connected to the converter branch and is used to monitor the operating status of the converter branch.

[0014] According to the energy storage balancing and control device based on dynamic time-slice power exchange provided by this utility model, it further includes:

[0015] An energy storage battery pack sensor is electrically connected to the energy storage battery pack and is used to detect the indicators of the energy storage battery pack. The energy storage battery pack sensor is also electrically connected to the controller, which controls the energy storage battery pack to generate energy slices for equalization and regulation.

[0016] According to the energy storage balancing and control device based on dynamic time-slice power exchange provided by this utility model, it further includes:

[0017] An energy storage bidirectional converter, wherein the energy storage bidirectional converter is electrically connected to the converter branch.

[0018] According to the present invention, an energy storage balancing and control device based on dynamic time-slice power exchange is provided, wherein the energy storage battery pack is a capacitor-type energy storage pack or a battery-type energy storage pack.

[0019] According to the present invention, an energy storage balancing and control device based on dynamic time-slice power exchange is provided, wherein the capacitor-type power storage pack is a supercapacitor.

[0020] The energy storage balancing and control device based on dynamic time-slice power exchange provided by this utility model combines sensing detection and analysis based on dynamic time-slice power exchange with a switching matrix between individual cells / groups of the energy storage battery pack. The controller controls the energy storage battery pack to generate energy slices for balancing and control, thereby avoiding the direct dissipation of energy as heat in the traditional passive balancing process, as well as the loss in the active balancing energy transfer process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the energy storage balancing and regulation device based on dynamic time-slice power exchange provided by this utility model.

[0023] Figure 2 This is a schematic diagram of the flexible connection between the energy storage battery pack and the converter branch provided by this utility model.

[0024] Figure label:

[0025] d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11, d12, d13, d14, d15, dn: represent individual battery cells;

[0026] k1, k2, k3, k4, k5, k6, k7, k8, k9, k10, k11, k12, k13, k14, k15, kn: represent the bypass switches of each individual battery cell;

[0027] k-1, k-2, k-3, k-4, k-5, k-6, k-7, k-8, k-9, k-10, k-11, k-12, k-13, k-14, k-15, kn: represent the series switches of each battery cell;

[0028] s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15, sn: represent individual battery cell sensors;

[0029] p1, p2, p3, pn: represent the sensors of each battery pack;

[0030] t1 and tn represent the sensors in each battery pack;

[0031] PACK 1, PACK n: represent each energy storage battery pack;

[0032] pk1, pk2, pk3, pk4, pk5, pkn, pk-1, pk-2, pk-3, pk-4, pk-5, pk-n: represent the switches between each energy storage battery pack and the converter branch;

[0033] PCS 1, PCS 2, PCS N: represent the branches of each energy storage converter;

[0034] p-1, p-2, pn: represent the sensors of each converter branch. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Figure 1 This is a schematic diagram of the energy storage balancing and control device based on dynamic time-slice power exchange provided by this utility model, as shown below. Figure 1 As shown, the device includes:

[0038] An energy storage battery pack, wherein the energy storage battery pack includes multiple battery groups, and the multiple battery groups include individual battery cells, individual battery cell sensors, individual battery cell series switches, and individual battery cell bypass switches;

[0039] The battery pack is formed by connecting multiple battery cells in series with a series switch, and then connecting them in parallel with a battery cell bypass switch.

[0040] The battery cell sensor is connected in parallel with the battery cell, and the battery cell sensor is used to detect the indicators of the battery cell.

[0041] The multiple battery packs are connected in parallel with the battery pack sensor, which is used to detect the indicators of the corresponding battery packs.

[0042] The individual battery cell sensor is electrically connected to the controller, and the battery pack sensor is electrically connected to the controller. The controller controls the energy storage battery pack to generate energy slices for equalization and regulation.

[0043] Specifically, an energy storage battery pack is also called a power assemble kit. Here, the materials, specifications, and operating conditions of different energy storage battery packs are allowed to be different, such as the system being compatible with energy storage battery packs made of different materials such as lithium iron phosphate and lead-carbon.

[0044] Specifically, the individual cells d1, d2, d3, and d4 are connected in series via switches k-1, k-2, k-3, and k-4, respectively; the individual cells d5, d6, d7, and d8 are connected in series via switches k-5, k-6, k-7, and k-8, respectively; the individual cells d9, d10, d11, and d12 are connected in series via switches k-9, k-10, k-11, and k-12, respectively; and the individual cells d13, d14, d15, and dn are connected in series via switches k-13, k-14, k-15, and kn, respectively.

[0045] Battery cell d1 is connected in parallel with battery cell sensor s1, battery cell d2 is connected in parallel with battery cell sensor s2, battery cell d3 is connected in parallel with battery cell sensor s3, ..., battery cell dn is connected in parallel with battery cell sensor sn.

[0046] Battery cell bypass switches k1, k2, k3, and k4 are connected in series and then in parallel with battery pack sensor p1; battery cell bypass switches k5, k6, k7, and k8 are connected in series and then in parallel with battery pack sensor p2; battery cell bypass switches k9, k10, k11, and k12 are connected in series and then in parallel with battery pack sensor p3; and battery cell bypass switches k13, k14, k15, and kn are connected in series and then in parallel with battery pack sensor pn.

[0047] Each battery pack is connected in parallel and then in parallel with the battery pack sensor. Furthermore, the energy storage battery pack PACK 1 is connected to the energy storage converter branch sensor p-1 and the energy storage converter branch PCS 1 through the energy storage battery pack and the converter branch inter-switch pk1. The energy storage battery pack PACK 1 is connected to the energy storage converter branch sensor p-2 and the energy storage converter branch PCS 2 through the energy storage battery pack and the converter branch inter-switch pk2. The energy storage battery pack PACK 1 is connected to the energy storage converter branch sensor pn and the energy storage converter branch PCS N through the energy storage battery pack and the converter branch inter-switch pk3. The energy storage battery pack PACK n is connected to the energy storage converter branch sensor p-1 and the energy storage converter branch PCS 1 through the energy storage battery pack and the converter branch inter-switch pk4. The energy storage battery pack PACK n is connected to the energy storage converter branch sensor p-2 and the energy storage converter branch PCS 2 through the energy storage battery pack and the converter branch inter-switch pk5. The energy storage battery pack PACK n is connected to the energy storage converter branch sensor pn and the energy storage converter branch PCS N through the energy storage battery pack and the converter branch inter-switch pkn.

[0048] The controller controls the energy storage battery pack to generate energy slices for equalization and regulation. Specifically, individual battery cell sensors detect the parameters of individual cells, obtaining a first parameter detection result; battery pack sensors detect the parameters of multiple battery packs, obtaining a second parameter detection result. The individual battery cell sensors send the first parameter detection result to the controller, and the battery pack sensors send the second parameter detection result to the controller. The controller receives the first and second parameter detection results and, based on these results, sends control commands to control the energy storage battery pack to generate energy slices for equalization and regulation.

[0049] For example, if the index detection result of a single cell d1 is abnormal, the battery cell can be shielded by closing the battery cell bypass switch k1 and disconnecting the battery cell series switch k-1, thereby generating energy slices for balanced regulation of the energy storage battery pack.

[0050] Here, the test results include, but are not limited to, the test results of at least one of the following indicators: battery state of charge (SOC), battery end of life (EOL), single cell voltage, single cell current, and battery state of health (SOH).

[0051] For example, when the indicator detection result is the individual cell voltage, the controller acts as a voltage comparator. It compares the individual cell voltage detection result with a standard voltage and outputs a high-level or low-level signal. This high-level or low-level signal serves as a control command. For instance, in a charging scenario, the battery pack receives a high-level signal and generates an energy slice for equalization control; it receives a low-level signal and does not perform any control. In a discharging scenario, the battery pack receives a low-level signal and generates an energy slice for equalization control; it receives a high-level signal and does not perform any control, thus achieving equalization control of the battery pack.

[0052] It should be noted that the battery cells d1, d2, ... dn are connected in series via series switches for individual battery cells k-1, k-2...kn, and then connected in parallel to form an energy storage battery pack. Individual battery cell sensors s1, s2...sn monitor and analyze indicators such as SOC, EOL, individual cell voltage, and individual cell current. Battery pack sensors p1, p2...pn monitor and analyze the battery pack's operating indicators. During charging and discharging, if an individual battery cell's indicator is abnormal, the corresponding individual battery cell bypass switch k1, k2...kn is closed, and the corresponding individual battery cell series switches k-1, k-2...kn are opened. If the battery pack's indicator is abnormal, all switches within the battery pack are opened. The energy storage battery pack sensors t1...tn detect and analyze the PACK 1...PACK n data. When an energy storage battery pack malfunctions, in addition to disconnecting the switches between the corresponding pk1, pk2…pkn energy storage battery packs and the converter branch, the switches within the corresponding energy storage battery packs are also disconnected (e.g., the battery cell bypass switches k1, k2…kn and the battery cell series switches k-1, k-2…kn). This is to achieve a shielding operation for battery cells / groups / packs with abnormal indicators.

[0053] Since the conditions for abnormal indicator detection are different in charging and discharging scenarios, the current usage scenario can be determined first, and then the energy storage battery pack can be tested under the current usage scenario to obtain the indicator test results.

[0054] If the indicator test results are abnormal, the individual battery cells and / or battery packs in the energy storage battery pack are shielded to obtain power energy slices, and the power energy slices are used to actively balance the charging and discharging of the energy storage battery pack.

[0055] For example, if the current usage scenario is a charging scenario, and at least one of the following is greater than the corresponding indicator threshold: battery state of charge, battery end-of-life state, single cell voltage, single cell current, and battery health status, the indicator detection result is determined to be abnormal.

[0056] If the current usage scenario is a discharge scenario and the indicator detection result is less than the second preset threshold, the indicator detection result is determined to be abnormal.

[0057] For example, if the current usage scenario is a discharge scenario, and at least one of the following is less than the corresponding indicator threshold: battery state of charge, battery end-of-life state, single cell voltage, single cell current, and battery health status, the indicator detection result is determined to be abnormal.

[0058] In this utility model, the bypass switches for each battery cell (k1, k2, k3, k4, k5, k6, k7, k8, k9, k10, k11, k12, k13, k14, k15, kn) and the series switches for each battery cell (k-1, k-2, k-3, k-4, k-5, k-6, k-7, k-8, k-9, k-10, k-11, k-12, k-13, k-14, k-15, kn) form a switch matrix.

[0059] The device provided by this utility model combines sensing and analysis of dynamic time-slice energy exchange between individual cells / groups of the energy storage battery pack with a switching matrix. The controller controls the energy storage battery pack to generate energy slices for equalization based on the index detection results, thereby avoiding the direct dissipation of energy as heat in the traditional passive equalization process, as well as the loss in the active equalization energy transfer process.

[0060] The device provided by this utility model combines sensing and analysis based on dynamic time-slice energy exchange with a switching matrix between individual battery cells / groups in an energy storage battery pack. During charging, it performs a shielding operation for battery cells / groups with excessively high SOC, EOL, individual cell voltage, and individual cell current values. During discharging, it performs a shielding operation for battery cells / groups with excessively low SOC, EOL, individual cell voltage, and individual cell current values. This achieves balanced charging and discharging, reduces battery inconsistencies, and avoids the direct dissipation of energy as heat in traditional passive balancing, as well as the losses during active balancing energy transfer.

[0061] In related technologies, the discharging and charging of energy storage systems typically rely on a power conversion system (PCS). Furthermore, when existing energy storage supplies power to loads of different voltage levels, it usually employs a power bus design, relying on multiple stages of converters behind the overall energy storage output side to achieve voltage regulation. However, the converters themselves also incur certain losses. Therefore, reducing the number of conversion cycles between energy storage and the load to reduce conversion process losses and improve energy storage cycle efficiency certainly has room for further improvement. Additionally, traditional energy storage systems are mostly centralized converters, lacking simultaneous charging and discharging capabilities, and typically use battery packs made of the same material.

[0062] Based on the above embodiments, the energy storage balancing and control device based on dynamic time-slice power exchange further includes:

[0063] A converter branch, which is electrically connected to the energy storage battery pack;

[0064] A converter branch sensor is electrically connected to the converter branch and is used to monitor the operating status of the converter branch.

[0065] An energy storage battery pack sensor is electrically connected to the energy storage battery pack and is used to detect the indicators of the energy storage battery pack. The energy storage battery pack sensor is also electrically connected to the controller, which controls the energy storage battery pack to generate energy slices for equalization and regulation.

[0066] An energy storage bidirectional converter, wherein the energy storage bidirectional converter is electrically connected to the converter branch.

[0067] Figure 2 This is a schematic diagram of the flexible connection between the energy storage battery pack and the converter branch provided by this utility model, as shown below. Figure 2 As shown, Figure 2 The symbols in the Chinese text are explained below:

[0068] E1, E2, E3, and En represent the various energy storage battery packs.

[0069] a1, a2, a3, and an represent the sensors of each energy storage battery pack;

[0070] b1, b2, b3, bn represent the branches of each energy storage converter;

[0071] c1, c2, c3, and cn represent the sensors of each converter branch;

[0072] S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, and Sn represent the switches between each energy storage battery pack and the converter branch.

[0073] The energy storage battery pack sensor is used to detect the indicators of the energy storage battery pack and obtain the third indicator detection result. The energy storage battery pack sensor and the controller are electrically connected. The controller receives the third indicator detection result sent by the energy storage battery pack sensor and controls the energy storage battery pack to generate energy slices for equalization and regulation based on the third indicator detection result.

[0074] For example, when the third indicator detection result is the battery pack voltage detection result, the controller acts as a voltage comparator. The controller compares the individual cell voltage detection result in the third indicator detection result with a standard voltage and outputs a high-level signal or a low-level signal. The high-level signal or low-level signal is equivalent to a control command. For example, in a charging scenario, the battery pack generates an energy slice for equalization control upon receiving a high-level signal, and does not perform any control upon receiving a low-level signal. In a discharging scenario, the battery pack generates an energy slice for equalization control upon receiving a low-level signal, and does not perform any control upon receiving a high-level signal, thereby achieving equalization control of the battery pack.

[0075] During charging and discharging, sensors a1, a2…an (energy storage battery pack sensors) and c1, c2…cn (converter branch sensors) dynamically monitor and analyze the voltage, current, and power on both sides of the energy storage battery pack and the converter branch under different charging and discharging scenarios. Switches S1, S2…Sn (energy storage battery packs and converter branches) are used to flexibly connect the source and load of the E1, E2, E3…En energy storage battery packs to the b1, b2, b3…bn energy storage converter branches. A possible implementation example is shown below:

[0076] To prevent overcharging / discharging of individual battery cells: close the battery cell bypass switch and disconnect the battery cell series switch, i.e., perform a shielding operation on the battery cell.

[0077] Multiple battery packs combined discharge: Multiple battery packs are switched to the same inverter branch via a switch (e.g., Figure 2 (Close switches S1 and S2 in the middle).

[0078] Multiple converter branch combined charging: Multiple converter branches are switched to the same battery pack via a switch (e.g., Figure 2 (Close switches S1 and S5 in the middle).

[0079] The energy storage system simultaneously charges and discharges.

[0080] This utility model provides a technical solution that combines dynamic time-slice power exchange to enhance the balancing strategy and control strategy of the energy storage battery management system, thereby further improving the energy storage cycle efficiency. The aim is to utilize the sensing and analysis capabilities of dynamic time-slice power exchange to dynamically detect the operating status of individual energy storage battery cells / groups / packs and the inverters of each branch. This allows for flexible connection between battery packs and inverter branches with corresponding needs through a power switch matrix of dynamic time-slice power exchange. This enables small-scale observation of the supply and demand situation on power transmission lines, obtaining directly usable energy slices. Based on these energy slices, precise control of the energy storage system can be achieved, ultimately improving energy storage cycle efficiency and achieving economic and energy-saving goals. Figure 1 It can be applied to equalization management during battery charging and discharging. Based on the detection and analysis of indicators such as individual cell / group voltage, individual cell current, SOC, EOL, etc., and using a switching matrix of dynamic time-slice power exchange, it can perform shielding operation for those with excessively low indicator values ​​during discharging and shielding operation for those with excessively high indicator values ​​during charging. Figure 2 By using dynamic time-slice power exchange sensing and analysis and a power switch matrix, the energy storage battery pack is flexibly connected to the converters of different voltage levels. When the voltage, power and other indicators of the energy storage battery pack and the converter branch are not compatible, the system switches to the appropriate converter branch.

[0081] It should be noted that by combining sensing and analysis based on dynamic time-slicing power exchange between the energy storage battery pack and the converter with a switching matrix, the operating status of each branch battery pack and each converter branch is detected on a dynamic time scale. This enables dynamic matching between fluctuating sources and loads through flexible connections, reducing the number of converter stages, lowering conversion losses, improving energy utilization, and supporting simultaneous charging and discharging of the energy storage system.

[0082] Understandably, based on the dynamic time-scale detection of the charging power and power consumption of each converter branch, the bidirectional flow of energy storage and power in each converter branch is regarded as energy slice flow on a small time scale, so as to accurately control the power selection and improve economic efficiency.

[0083] In this invention, the S1, S2...Sn energy storage battery packs and the converter branch switches form a power switch matrix.

[0084] A power dispatch architecture based on dynamic time-slicing power exchange is adopted to replace the traditional energy storage power bus connection method, and a time-reused flexible connection power switch matrix is ​​constructed to ensure that the system achieves the goal of improving energy storage cycle efficiency.

[0085] Based on the above embodiments, optionally, the energy storage battery pack is a capacitor-type energy storage pack or a battery-type energy storage pack.

[0086] For example, a capacitor-type energy storage pack is a supercapacitor.

[0087] This embodiment provides dynamic time-scale detection and analysis and flexible connection of energy storage battery cells, battery packs, battery modules and converter branches. It abandons the traditional power bus connection method, decouples multiple converter branches (load, charging power supply) and independent power source selection switches, and can be flexibly combined and connected. It has the ability to charge and discharge simultaneously, reduces the number of converter links, and the proposed balancing strategy avoids overcharging and over-discharging of battery cells while avoiding energy loss, thus comprehensively improving the energy storage cycle efficiency.

[0088] This invention combines sensing and analysis based on dynamic time-slicing energy exchange between the energy storage battery pack and the converter with a switching matrix. It dynamically observes and monitors the operating status of each branch battery pack and each converter branch over a time scale, achieving dynamic adaptation between fluctuating source loads, reducing conversion losses, and improving energy utilization while providing simultaneous charging and discharging capabilities. (Note: In this invention, branches composed of multiple converters and converters with multi-branch functions are uniformly understood as converter branches.)

[0089] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0090] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An energy storage balancing and control device based on dynamic time-slice power exchange, characterized in that, include: An energy storage battery pack, wherein the energy storage battery pack includes multiple battery groups, and the multiple battery groups include individual battery cells, individual battery cell sensors, individual battery cell series switches, and individual battery cell bypass switches; The battery pack is formed by connecting multiple battery cells in series with a series switch, and then connecting them in parallel with a battery cell bypass switch. The battery cell sensor is connected in parallel with the battery cell, and the battery cell sensor is used to detect the indicators of the battery cell. The multiple battery packs are connected in parallel with the battery pack sensor, which is used to detect the indicators of the corresponding battery packs. The individual battery cell sensor is electrically connected to the controller, and the battery pack sensor is electrically connected to the controller. The controller controls the energy storage battery pack to generate energy slices for equalization and regulation.

2. The energy storage balancing and control device based on dynamic time-slice power exchange according to claim 1, characterized in that, Also includes: A converter branch, which is electrically connected to the energy storage battery pack; A converter branch sensor is electrically connected to the converter branch and is used to monitor the operating status of the converter branch.

3. The energy storage balancing and control device based on dynamic time-slice power exchange according to claim 1 or 2, characterized in that, Also includes: An energy storage battery pack sensor is electrically connected to the energy storage battery pack and is used to detect the indicators of the energy storage battery pack. The energy storage battery pack sensor is also electrically connected to the controller, which controls the energy storage battery pack to generate energy slices for equalization and regulation.

4. The energy storage balancing and control device based on dynamic time-slice power exchange according to claim 1 or 2, characterized in that, Also includes: An energy storage bidirectional converter, wherein the energy storage bidirectional converter is electrically connected to the converter branch.

5. The energy storage balancing and control device based on dynamic time-slice power exchange according to claim 4, characterized in that, The energy storage battery pack can be either a capacitor-type energy storage pack or a battery-type energy storage pack.

6. The energy storage balancing and control device based on dynamic time-slice power exchange according to claim 5, characterized in that, The capacitor-type energy storage pack is a supercapacitor.

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