CN218586899U - Battery module controller, battery cluster and energy storage system - Google Patents
Battery module controller, battery cluster and energy storage system Download PDFInfo
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- CN218586899U CN218586899U CN202220253631.4U CN202220253631U CN218586899U CN 218586899 U CN218586899 U CN 218586899U CN 202220253631 U CN202220253631 U CN 202220253631U CN 218586899 U CN218586899 U CN 218586899U
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Abstract
The utility model relates to a battery module controller, battery cluster and energy storage system, through setting up and controlling the break-make of cell connection power line, cell switching buffering transition power line, cell switching power line, the energy storage system is in operation, when charging, postpones charging with battery or cell that voltage or electric quantity deviation are too high, the deviation is dwindled to normal scope and then puts into operation; when discharging, the battery or the battery unit with too low voltage or electric quantity deviation is discharged temporarily, and the deviation is reduced to a normal range and then put into use; cutting out the corresponding battery or battery unit when the abnormal fault of the battery or battery unit is found; particularly, a transition structure for switching the battery units by adopting the battery unit switching buffer transition power lines enables the switching not to cause short circuit or open circuit, and the switching is disconnected after bypassing, so that the energy consumption and the thermal runaway risk are not generated, the dynamic online switching of the battery units is effectively solved, the online dynamic balance and maintenance are realized, and the safety and the efficiency of a battery energy storage system are improved.
Description
Technical Field
The utility model belongs to the technical field of the battery energy storage, concretely relates to battery module controller, battery cluster and energy storage system.
Background
The battery energy storage system is a battery pack formed by connecting a plurality of batteries with small electric quantity in series and parallel, and is connected to a power grid through an energy storage converter to charge and discharge. The defect that the inconsistency of the battery monomer is unavoidable is particularly obvious when the battery and the retired battery are used for a period of time, and the battery of the battery energy storage system is different in installation and physical position and relatively fixed in connection and placement, so that the influence of the inconsistency on the charging and discharging electric quantity of the battery is further increased, the short plate effect that the overall efficiency is reduced is caused when the battery energy storage system is charged and discharged, and the unsafe risk that the battery is overcharged or overdischarged or even detonated is easily caused due to the fact that the voltage and electric quantity of the individual battery are too large in deviation. Therefore, the battery pack needs to be flexibly adjusted and dynamically maintained, the consistency of the battery voltage and the electric quantity of the battery and the battery pack string during charging and discharging is ensured to be in a controllable range, the overcharge, the overdischarge and the short plate effect of the battery are avoided, and the safety, the utilization rate and the investment income of the battery energy storage system are improved.
The inconsistency of the battery greatly affects the safety and the use efficiency of the battery. Therefore, the problem that when an energy storage system is in operation, a battery or a battery unit with excessively high voltage or electric quantity deviation is charged temporarily when the energy storage system is charged, and the deviation is reduced to a normal range and then the battery or the battery unit is charged needs to be solved; when the battery or the battery unit with too low discharge upper voltage or electric quantity deviation is discharged temporarily, the deviation is reduced to a normal range and then the battery or the battery unit is put into discharge, so that the on-line electric quantity balance is realized; and cutting out the corresponding battery or battery unit when the abnormal fault of the battery or battery unit is found, and carrying out dynamic maintenance.
For this reason, the industry engineers continue to develop and practice, and propose solutions, such as: the invention patent number of "a battery cell, energy storage system and battery cell fault protection method" that the national intellectual property office announced is CN113193628, the battery cell, energy storage system and battery cell fault protection method that this technical scheme announced and proposed, the system and system architecture diagram that the technical scheme that announced designs, as can be seen from the content of this scheme, its essence is to pass the battery cell of the abnormal fault through the bypass power line and switch, and set up a switch of isolating the battery cell of cutting out the fault from the battery cell string in the battery cell string corresponding battery cell link end, its core characteristic is to substitute the battery cell producing the fault with the short circuit of bypass power line; the content of the 40 th to 45 th paragraphs of the specification gives the design concept of the technical scheme, the relationship and the function of the system components and the corresponding control rules and methods; it can be easily seen that the technical scheme has obvious defects:
first, the system architecture and control method design of this scheme, its material protection content has serious defect, records in this scheme "when detecting this battery unit to break down: triggering a first controllable switch in the battery unit to be switched off, so that a circuit formed by connecting the battery unit with other battery units in series is opened; and triggering a second controllable switch in the battery unit to be closed, so that a battery unit string formed by the battery unit with the fault and other battery units connected in series is opened and is disconnected with a direct current bus of the power conversion equipment, the power conversion equipment is caused to generate direct current side fault due to power interruption due to the open circuit of the battery unit string, and the power conversion equipment is in fault shutdown.
Secondly, because the system architecture of the technical scheme adopts the system architecture that the battery unit is directly closed through the second controllable switch to conduct bypass conduction, the second controllable switch of the bypass can be closed only after the first controllable switch is disconnected, otherwise, the battery unit forms instant short circuit, and the serious accident that the battery is exploded due to short circuit is caused. Therefore, the technical solution of this solution claim requires "when the failure of the present battery cell is detected: triggering a first controllable switch in the battery unit to be switched off, so that a circuit formed by connecting the battery unit with other battery units in series is opened; triggering a second controllable switch in the battery unit to be closed so as to bypass the battery unit; therefore, the scheme cannot perform online dynamic online switching on the battery units with large inconsistency deviation, and cannot realize online dynamic balancing and maintenance operation.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical difficulties and problems are effectively solved. The utility model provides a battery module controller, battery cluster and energy storage system, a serial communication port, battery module controller includes: the system comprises a battery monitoring and switching control circuit, a battery unit connecting power line, a 1 st battery unit switching buffer transition power line, a 1 st battery unit switching bypass power line, a 2 nd battery unit switching buffer transition power line, a 2 nd battery unit switching bypass power line, a communication and switch control line, a battery monitoring communication line, a 1 st battery unit connecting terminal, a 1 st bypass connecting terminal, a 2 nd battery unit connecting terminal, a 2 nd bypass connecting terminal, a 1 st communication interface and a 2 nd communication interface; wherein: the battery unit is connected with a power line, a 1 st battery unit switching bypass power line and a 2 nd battery unit switching bypass power line, a 1 st controlled switch K1, a 3 rd controlled switch K3 and a 5 th controlled switch K5 are respectively connected with the battery unit switching bypass power line, the 1 st battery unit switching buffer transition power line and the 2 nd battery unit switching buffer transition power line are respectively provided with a 2 nd controlled switch K2 connected with a series matching resistor R1 and a 4 th controlled switch K4 connected with a series matching resistor R2;
the two ends of the battery unit connecting power line are respectively connected with a 1 st battery unit connecting terminal and a 2 nd battery unit connecting terminal; the 1 st battery unit switching buffer transition power line is connected in parallel with the 1 st battery unit switching bypass power line, and two ends of the 1 st battery unit switching buffer transition power line are respectively connected with the 1 st battery unit connecting terminal and the 2 nd bypass connecting terminal; the 2 nd battery unit switching buffer transition power line is connected in parallel with the 2 nd battery unit switching bypass power line, and the two ends of the 2 nd battery unit switching buffer transition power line are respectively connected with the 1 st bypass connection terminal and the 2 nd battery unit connection terminal; the battery monitoring and switching control circuit is provided with a 1 st communication interface and is connected with a 1 st controlled switch K1, a 2 nd controlled switch K2, a 3 rd controlled switch K3, a 4 th controlled switch K4, a 5 th controlled switch K5 and a 2 nd communication interface through a communication and switch control line; thus, the battery module controller is constructed.
The battery module controller, the battery cluster and the energy storage system are characterized in that the battery module controller is respectively connected with a 1 st battery or a battery unit PACK and a 2 nd battery or a battery unit PACK, and a battery monitoring and switching control circuit is respectively connected with the 1 st battery or the battery unit PACK and the 2 nd battery or each single battery in the battery unit PACK through a 2 nd communication interface and a battery monitoring communication line to form a battery module with controlled switching and balanced protection;
the battery module with controlled switching and balanced protection is characterized in that a 1 st battery unit connecting terminal of a battery module controller is connected with a 1 st battery or a battery unit PACK positive electrode or negative electrode, a 1 st bypass connecting terminal of the battery module controller is connected with a 1 st battery or a battery unit PACK negative electrode or positive electrode, a 2 nd battery unit connecting terminal of the battery module controller is connected with a 2 nd battery or a battery unit PACK negative electrode or positive electrode, a 2 nd bypass connecting terminal of the battery module controller is connected with a 2 nd battery or a battery unit PACK positive electrode or negative electrode, and a 2 nd communication interface is respectively connected with the 1 st battery or the battery unit PACK and each single battery in the 2 nd battery or the battery unit PACK through a battery monitoring communication line.
The battery module controller, the battery cluster and the energy storage system are characterized in that a battery monitoring and switching control circuit controls a 1 st controlled switch K1 to be switched on and switched off, and controls a 2 nd controlled switch K2, a 3 rd controlled switch K3, a 4 th controlled switch K4 and a 5 th controlled switch K5 to be switched off so as to form a series power path of a 1 st battery or battery unit PACK and a 2 nd battery or battery unit PACK;
the battery monitoring and switching control circuit controls the 1 st controlled switch K1, the 2 nd controlled switch K2 and the 4 th controlled switch K4 to be switched off, and controls the 3 rd controlled switch K3 and the 5 th controlled switch K5 to be switched on and switched off, so that a 1 st battery or battery unit PACK and a 2 nd battery or battery unit PACK parallel power path are formed, and a battery unit redundant hot backup system structure is formed;
the battery monitoring and switching control circuit controls the 5 th controlled switch K5 to be closed and conducted, and controls the 1 st controlled switch K1, the 2 nd controlled switch K2, the 3 rd controlled switch K3 and the 4 th controlled switch K4 to be disconnected, so that a 1 st battery or battery unit PACK bypass and a 2 nd battery or battery unit PACK series power path are formed;
the battery monitoring and switching control circuit controls the 3 rd controlled switch K3 to be closed and conducted, and controls the 1 st controlled switch K1, the 2 nd controlled switch K2, the 4 th controlled switch K4 and the 5 th controlled switch K5 to be disconnected, so that a 2 nd battery or battery unit PACK bypass and a 1 st battery or battery unit PACK series power path are formed.
The battery module controller, the battery cluster and the energy storage system are characterized in that the battery module with controlled switching and balanced protection sequentially controls a 4 th controlled switch K4 to be closed and conducted, controls a 1 st controlled switch K1 to be disconnected, controls a 5 th controlled switch K5 to be closed and conducted and controls a 4 th controlled switch K4 to be disconnected by a battery monitoring and switching control circuit in the normal operation process of connecting a 1 st battery or a battery unit PACK and a 2 nd battery or a battery unit PACK in series, so that a power path cut out by a bypass of the 1 st battery or the battery unit PACK in balanced and protected mode is formed;
in the normal operation process of the 1 st battery or the battery unit PACK and the 2 nd battery or the battery unit PACK which are connected in series, the battery monitoring and switching control circuit sequentially controls the 2 nd controlled switch K2 to be switched on and off, controls the 1 st controlled switch K1 to be switched off, controls the 3 rd controlled switch K3 to be switched on and off and controls the 2 nd controlled switch K2 to be switched off so as to form a power path switched out by a bypass for balancing and protecting the 2 nd battery or the battery unit PACK;
in the bypass operation process of the 1 st battery or the battery unit PACK balancing and protecting, the battery monitoring and switching control circuit sequentially controls the 4 th controlled switch K4 to be closed and conducted, controls the 5 th controlled switch K5 to be disconnected, controls the 1 st controlled switch K1 to be closed and conducted and controls the 4 th controlled switch K4 to be disconnected so as to form a power path which is input after the 1 st battery or the battery unit PACK is balanced and protected;
the battery module with controlled switching and balanced protection is characterized in that in the process of bypass operation of the 2 nd battery or the battery unit PACK in the balanced and protected process, the battery monitoring and switching control circuit sequentially controls the 2 nd controlled switch K2 to be closed and conducted, controls the 3 rd controlled switch K3 to be disconnected, controls the 1 st controlled switch K1 to be closed and conducted and controls the 2 nd controlled switch K2 to be disconnected, and a power path which is put into after the 2 nd battery or the battery unit PACK is balanced and protected is formed.
The battery module controller, the battery cluster and the energy storage system are characterized in that at least 1 or more battery modules controlled to be switched and balanced for protection, and the positive electrodes of the battery modules of any 2 or more battery modules controlled to be switched and balanced for protection are connected with the negative electrodes of the adjacent battery modules one by one to form a battery module group cluster.
The battery module controller, the battery cluster and the energy storage system are characterized in that the positive electrodes and the negative electrodes of at least 1 or more battery module group clusters are respectively connected in parallel with corresponding positive direct current buses and negative direct current buses, the positive direct current buses and the negative direct current buses are connected with a power converter or a direct current power device, and meanwhile, an energy storage system control device is connected with a 1 st communication interface arranged in a battery monitoring and switching control circuit in each battery module through an energy storage system control communication line and is connected with the power converter or the direct current power device to form a battery energy storage control path and a battery energy storage system.
The utility model relates to a battery module controller, battery cluster and energy storage system, through setting up and controlling the break-make of cell connection power line, cell switching buffering transition power line, cell switching power line, energy storage system operation, when charging, cut out the battery or the cell that voltage or electric quantity deviation are too high and suspend charging, other cell continue to operate and charge, reduce to normal scope when the deviation and drop into the operation again; during discharging, the battery or the battery unit with too low voltage or electric quantity deviation is cut out to suspend discharging, other battery units continue to operate and discharge, and the battery or the battery unit is put into use when the deviation is reduced to a normal range; cutting out the corresponding battery or battery unit when the abnormal fault of the battery or battery unit is found, and timely maintaining and avoiding fault expansion; particularly, the battery unit switching buffer transition power line is adopted to carry out connection and transition structure of battery unit switching, short circuit or open circuit is avoided in switching, the battery unit switching buffer transition power line is disconnected after a bypass, energy consumption and thermal runaway risks caused by the battery unit switching buffer transition power line are avoided, dynamic switching on the battery unit is effectively avoided, online dynamic balance and maintenance are achieved, and safety and efficiency of a battery energy storage system are improved.
Drawings
Fig. 1 is a schematic block diagram of the same battery module controller.
Fig. 2 is a schematic block diagram of the same controlled switching and equalization protected battery module.
Fig. 3 is a schematic block diagram of the same battery module group string cluster.
FIG. 4 is a schematic block diagram of a battery module controller, battery cluster and energy storage system
Detailed Description
A battery module controller, a battery cluster, and an energy storage system will be described as an example of implementation with reference to the accompanying drawings, but the described embodiments are some, but not all, embodiments of the present invention applied to a battery module controller, a battery cluster, and an energy storage system. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention; the techniques and solutions of the present invention are not limited to the content presented in this embodiment.
As shown in fig. 1, a battery module controller, a battery cluster and an energy storage system are characterized in that the battery module controller (100) comprises: the system comprises a battery monitoring and switching control circuit (10), a battery unit connecting power line (11), a 1 st battery unit switching buffer transition power line (12), a 1 st battery unit switching bypass power line (13), a 2 nd battery unit switching buffer transition power line (14), a 2 nd battery unit switching bypass power line (15), a communication and switch control line (17), a battery monitoring communication line (20), a 1 st battery unit connecting terminal (F1), a 1 st bypass connecting terminal (Z1), a 2 nd battery unit connecting terminal (F2), a 2 nd bypass connecting terminal (Z2), a 1 st communication interface (11) and a 2 nd communication interface (T2); wherein: the battery unit is connected with a power line (11), a 1 st battery unit switching bypass power line (13) and a 2 nd battery unit switching bypass power line (15), a 1 st controlled switch K1, a 3 rd controlled switch K3 and a 5 th controlled switch K5 are respectively connected with the battery unit switching bypass power line, a 1 st battery unit switching buffer transition power line (12) and a 2 nd battery unit switching buffer transition power line (14) are respectively arranged, and a 2 nd controlled switch K2 connected with a series matching resistor R1 and a 4 th controlled switch K4 connected with a series matching resistor R2 are respectively arranged;
the battery pack is characterized in that two ends of a battery unit connecting power line (11) are respectively connected with a 1 st battery unit connecting terminal (F1) and a 2 nd battery unit connecting terminal (F2); a 1 st battery unit switching buffer transition power line (12) is connected in parallel with a 1 st battery unit switching bypass power line (13), and two ends of the 1 st battery unit switching buffer transition power line are respectively connected with a 1 st battery unit connecting terminal (F1) and a 2 nd bypass connecting terminal (Z2); a 2 nd battery unit switching buffer transition power line (14) is connected in parallel with a 2 nd battery unit switching bypass power line (15), and two ends of the 2 nd battery unit switching buffer transition power line are respectively connected with a 1 st bypass connection terminal (Z1) and a 2 nd battery unit connection terminal (F2); the battery monitoring and switching control circuit (10) is provided with a 1 st communication interface (T1) and is connected with a 1 st controlled switch K1, a 2 nd controlled switch K2, a 3 rd controlled switch K3, a 4 th controlled switch K4, a 5 th controlled switch K5 and a 2 nd communication interface (T2) through a communication and switch control line (17); the battery module controller (100) is constructed as described above.
As shown in fig. 1-2, the battery module controller, the battery cluster and the energy storage system are described, wherein the battery module controller (100) is respectively connected to the 1 st battery or battery unit PACK (P1) and the 2 nd battery or battery unit PACK (P2), and the battery monitoring and switching control circuit (10) is respectively connected to each single battery in the 1 st battery or battery unit PACK (P1) and the 2 nd battery or battery unit PACK (P2) through the 2 nd communication interface (T2) and the battery monitoring communication line (20), so as to form a battery module (200) with controlled switching and balanced protection;
the controlled switching and balanced protection battery module (200) is characterized in that a 1 st battery or a 1 st battery cell positive electrode or a 1 st battery cell PACK positive electrode or a negative electrode is connected through a 1 st battery cell connecting terminal (F1) of a battery module controller (100), a 1 st battery or a battery cell PACK (P1) negative electrode or a positive electrode is connected through a 1 st bypass connecting terminal (Z1) of the battery module controller (100), a 2 nd battery or a battery cell PACK (P2) negative electrode or a positive electrode is connected through a 2 nd battery cell connecting terminal (F2) of the battery module controller (100), a 2 nd battery or a battery cell PACK (P2) positive electrode or a negative electrode is connected through a 2 nd battery cell connecting terminal (Z2) of the battery module controller (100), and a 1 st battery or a battery cell PACK (P1) and each single battery in a 2 nd battery or a battery cell PACK (P2) are respectively connected through a battery monitoring communication line (20) through a 2 nd communication interface (T2).
As shown in fig. 1-2, the battery module controller, the battery cluster and the energy storage system are characterized in that the battery module (200) with controlled switching and equalizing protection is characterized in that a battery monitoring and switching control circuit (10) controls a 1 st controlled switch K1 to be closed and connected, and controls a 2 nd controlled switch K2, a 3 rd controlled switch K3, a 4 th controlled switch K4 and a 5 th controlled switch K5 to be disconnected, so as to form a serial power path of a 1 st battery or battery unit PACK (P1) and a 2 nd battery or battery unit PACK (P2);
a battery monitoring and switching control circuit (10) controls a 1 st controlled switch K1, a 2 nd controlled switch K2 and a 4 th controlled switch K4 to be switched off, and controls a 3 rd controlled switch K3 and a 5 th controlled switch K5 to be switched on and switched off, so that a 1 st battery or battery unit PACK (P1) and a 2 nd battery or battery unit PACK (P2) parallel power path are formed, and a battery unit redundant hot backup system structure is formed;
a 5 th controlled switch K5 is controlled to be closed and conducted by a battery monitoring and switching control circuit (10), and a 1 st controlled switch K1, a 2 nd controlled switch K2, a 3 rd controlled switch K3 and a 4 th controlled switch K4 are controlled to be disconnected to form a 1 st battery or battery unit PACK (P1) bypass and a 2 nd battery or battery unit PACK (P2) series power path;
the battery monitoring and switching control circuit (10) controls the 3 rd controlled switch K3 to be closed and conducted, and controls the 1 st controlled switch K1, the 2 nd controlled switch K2, the 4 th controlled switch K4 and the 5 th controlled switch K5 to be disconnected, so that a 2 nd battery or battery unit PACK (P2) bypass and a 1 st battery or battery unit PACK (P1) series power path are formed.
As shown in fig. 1-2, the battery module controller, the battery cluster and the energy storage system are characterized in that in the normal operation process of connecting the 1 st battery or battery cell PACK (P1) and the 2 nd battery or battery cell PACK (P2) in series, the battery monitoring and switching control circuit (10) sequentially controls the 4 th controlled switch K4 to be closed and connected, controls the 1 st controlled switch K1 to be disconnected, controls the 5 th controlled switch K5 to be closed and connected, and controls the 4 th controlled switch K4 to be disconnected, so as to form a bypass-switched power path for balancing and protecting the 1 st battery or battery cell PACK (P1);
in the normal operation process of the 1 st battery or battery unit PACK (P1) and the 2 nd battery or battery unit PACK (P2) which are connected in series, the battery monitoring and switching control circuit (10) sequentially controls the 2 nd controlled switch K2 to be closed and conducted, controls the 1 st controlled switch K1 to be disconnected, controls the 3 rd controlled switch K3 to be closed and conducted and controls the 2 nd controlled switch K2 to be disconnected so as to form a power path switched out by a bypass of the balance and protection of the 2 nd battery or battery unit PACK (P2);
in the process of bypass operation of the balance and protection of the 1 st battery or battery unit PACK (P1), the battery monitoring and switching control circuit (10) sequentially controls the 4 th controlled switch K4 to be closed and conducted, controls the 5 th controlled switch K5 to be disconnected, controls the 1 st controlled switch K1 to be closed and conducted and controls the 4 th controlled switch K4 to be disconnected to form a power path which is put into the 1 st battery or battery unit PACK (P1) after the balance and protection;
in the process of bypass operation of the balance and protection of the No. 2 battery or the battery unit PACK (P2), the battery monitoring and switching control circuit (10) sequentially controls the No. 2 controlled switch K2 to be closed and conducted, controls the No. 3 controlled switch K3 to be disconnected, controls the No. 1 controlled switch K1 to be closed and conducted and controls the No. 2 controlled switch K2 to be disconnected, and a power path which is put into after the No. 2 battery or the battery unit PACK (P2) is balanced and protected is formed.
As shown in fig. 3, the battery module controller, the battery cluster and the energy storage system are characterized in that at least 1 or more battery modules (200) controlled to be switched and balanced for protection, and the positive electrodes (P11) of the battery modules (200) controlled to be switched and balanced for protection and any 2 or more battery modules (P22) controlled to be switched and balanced for protection are connected with the negative electrodes (P22) of the adjacent battery modules one by one to form a battery module group cluster (300).
As shown in fig. 4, the battery module controller, the battery cluster and the energy storage system are characterized in that the positive electrodes and the negative electrodes of at least 1 or more battery module group clusters (300) are respectively connected in parallel to a corresponding positive electrode dc bus (340) and a corresponding negative electrode dc bus (350), the positive electrode dc bus (340) and the negative electrode dc bus (350) are connected to a power converter or a dc power device (310), and meanwhile, an energy storage system control device (320) is connected to a 1 st communication interface (T1) of a battery monitoring and switching control circuit (10) in each battery module (200) through an energy storage system control communication line (330) and is connected to the power converter or the dc power device (310) to form a battery energy storage control path and a battery energy storage system.
The utility model relates to a battery module controller, battery cluster and energy storage system, through setting up and controlling the break-make of controlled switch, the energy storage system is in operation, when charging, cut out the battery or the battery unit that voltage or electric quantity deviation are too high and suspend charging, other battery units continue to operate and charge, reduce to the normal scope when the deviation and put into operation again; during discharging, the battery or the battery unit with too low voltage or electric quantity deviation is cut out to suspend discharging, other battery units continue to operate and discharge, and the battery or the battery unit is put into use when the deviation is reduced to a normal range; when the abnormal fault of the battery or the battery unit is found, the corresponding battery or the battery unit is cut out, maintenance is carried out in time, and the fault expansion is avoided; particularly, the battery unit switching buffer transition power line is adopted to carry out connection and transition structure of battery unit switching, so that short circuit or open circuit is avoided during switching, the battery unit switching buffer transition power line is disconnected after bypassing, energy consumption and thermal runaway risk caused by the battery unit switching buffer transition power line are avoided, dynamic switching on the battery unit is effectively solved, online dynamic balance and maintenance are realized, and the safety and the efficiency of a battery energy storage system are improved.
The specific embodiments are given above, but the present invention is not limited to the described embodiments. To the ordinary technical personnel in this field, according to the technical scheme of the utility model, the matched stack, formula, the parameter of designing various deformation need not spend creative work, change, modification, replacement and the variation that goes on the embodiment under the circumstances that does not deviate from the principle and the design framework of the utility model still fall into the protection scope of the utility model.
Claims (6)
1. A battery module controller, a battery cluster and an energy storage system, wherein the battery module controller comprises: the system comprises a battery monitoring and switching control circuit, a battery unit connecting power line, a 1 st battery unit switching buffer transition power line, a 1 st battery unit switching bypass power line, a 2 nd battery unit switching buffer transition power line, a 2 nd battery unit switching bypass power line, a communication and switch control line, a battery monitoring communication line, a 1 st battery unit connecting terminal, a 1 st bypass connecting terminal, a 2 nd battery unit connecting terminal, a 2 nd bypass connecting terminal, a 1 st communication interface and a 2 nd communication interface, wherein the battery monitoring communication line is connected with the first battery unit connecting terminal through a communication line; wherein: the battery unit is connected with a power line, a 1 st battery unit switching bypass power line and a 2 nd battery unit switching bypass power line, a 1 st controlled switch K1, a 3 rd controlled switch K3 and a 5 th controlled switch K5 are respectively arranged and connected, a 1 st battery unit switching buffer transition power line and a 2 nd battery unit switching buffer transition power line are respectively arranged, and a 2 nd controlled switch K2 connected into a series matching resistor R1 and a 4 th controlled switch K4 connected into a series matching resistor R2 are respectively arranged;
the two ends of the battery unit connecting power line are respectively connected with a 1 st battery unit connecting terminal and a 2 nd battery unit connecting terminal; the 1 st battery unit switching buffer transition power line is connected in parallel with the 1 st battery unit switching bypass power line, and two ends of the 1 st battery unit switching buffer transition power line are respectively connected with the 1 st battery unit connecting terminal and the 2 nd bypass connecting terminal; a 2 nd battery unit switching buffer transition power line is connected in parallel with a 2 nd battery unit switching bypass power line, and two ends of the 2 nd battery unit switching buffer transition power line are respectively connected with a 1 st bypass connecting terminal and a 2 nd battery unit connecting terminal; the battery monitoring and switching control circuit is provided with a 1 st communication interface and is connected with a 1 st controlled switch K1, a 2 nd controlled switch K2, a 3 rd controlled switch K3, a 4 th controlled switch K4, a 5 th controlled switch K5 and a 2 nd communication interface through a communication and switch control line; thus, the battery module controller is constructed.
2. The battery module controller, the battery cluster and the energy storage system as claimed in claim 1, wherein the battery module controller is connected to the 1 st battery or battery unit PACK and the 2 nd battery or battery unit PACK, respectively, and the battery monitoring and switching control circuit is connected to each single battery in the 1 st battery or battery unit PACK and the 2 nd battery or battery unit PACK through the 2 nd communication interface and the battery monitoring communication line, respectively, to form a battery module with controlled switching and equalization protection;
the battery module with controlled switching and balanced protection is characterized in that a 1 st battery unit connecting terminal of a battery module controller is connected with a 1 st battery or a battery unit PACK positive electrode or negative electrode, a 1 st bypass connecting terminal of the battery module controller is connected with a 1 st battery or a battery unit PACK negative electrode or positive electrode, a 2 nd battery unit connecting terminal of the battery module controller is connected with a 2 nd battery or a battery unit PACK negative electrode or positive electrode, a 2 nd bypass connecting terminal of the battery module controller is connected with a 2 nd battery or a battery unit PACK positive electrode or negative electrode, and a 2 nd communication interface is respectively connected with the 1 st battery or the battery unit PACK and each single battery in the 2 nd battery or the battery unit PACK through a battery monitoring communication line.
3. The battery module controller, the battery cluster and the energy storage system according to claim 2, wherein the battery module with controlled switching and balanced protection is characterized in that the battery monitoring and switching control circuit controls the 1 st controlled switch K1 to be closed and connected, and controls the 2 nd controlled switch K2, the 3 rd controlled switch K3, the 4 th controlled switch K4 and the 5 th controlled switch K5 to be opened, so as to form a series power path of the 1 st battery or battery unit PACK and the 2 nd battery or battery unit PACK;
the battery monitoring and switching control circuit controls a 1 st controlled switch K1, a 2 nd controlled switch K2 and a 4 th controlled switch K4 to be switched off, and controls a 3 rd controlled switch K3 and a 5 th controlled switch K5 to be switched on and switched off, so that a 1 st battery or battery unit PACK and a 2 nd battery or battery unit PACK are connected in parallel to form a power path, and a battery unit redundant hot backup system structure is formed;
the battery monitoring and switching control circuit controls the 5 th controlled switch K5 to be closed and conducted, and controls the 1 st controlled switch K1, the 2 nd controlled switch K2, the 3 rd controlled switch K3 and the 4 th controlled switch K4 to be disconnected, so that a 1 st battery or battery unit PACK bypass and a 2 nd battery or battery unit PACK series power path are formed;
the battery monitoring and switching control circuit controls the 3 rd controlled switch K3 to be closed and conducted, and controls the 1 st controlled switch K1, the 2 nd controlled switch K2, the 4 th controlled switch K4 and the 5 th controlled switch K5 to be disconnected, so that a 2 nd battery or battery unit PACK bypass and a 1 st battery or battery unit PACK series power path are formed.
4. The battery module controller, the battery cluster and the energy storage system according to claim 2, wherein in the normal operation process of connecting the 1 st battery or the battery unit PACK and the 2 nd battery or the battery unit PACK in series, the battery monitoring and switching control circuit sequentially controls the 4 th controlled switch K4 to be turned on and off, controls the 1 st controlled switch K1 to be turned off, controls the 5 th controlled switch K5 to be turned on and turned off, and controls the 4 th controlled switch K4 to be turned off, so as to form a bypass-switched power path for balancing and protecting the 1 st battery or the battery unit PACK;
in the normal operation process of the 1 st battery or the battery unit PACK and the 2 nd battery or the battery unit PACK which are connected in series, the battery monitoring and switching control circuit sequentially controls the 2 nd controlled switch K2 to be switched on and switched off, controls the 1 st controlled switch K1 to be switched off, controls the 3 rd controlled switch K3 to be switched on and switched off and controls the 2 nd controlled switch K2 to be switched off so as to form a power path cut out by a bypass of the 2 nd battery or the battery unit PACK for balancing and protecting;
in the process of the bypass operation of the balance and protection of the 1 st battery or the battery unit PACK, the battery monitoring and switching control circuit sequentially controls the 4 th controlled switch K4 to be switched on and off, controls the 5 th controlled switch K5 to be switched off, controls the 1 st controlled switch K1 to be switched on and off and controls the 4 th controlled switch K4 to be switched off so as to form a power path for the balance and protection of the 1 st battery or the battery unit PACK;
in the bypass operation process of the 2 nd battery or the battery unit PACK balancing and protecting, the battery monitoring and switching control circuit sequentially controls the 2 nd controlled switch K2 to be closed and conducted, the 3 rd controlled switch K3 to be disconnected, the 1 st controlled switch K1 to be closed and conducted and the 2 nd controlled switch K2 to be disconnected so as to form a power path which is put into after the 2 nd battery or the battery unit PACK is balanced and protected.
5. The battery module controller, the battery cluster and the energy storage system as claimed in claim 2, wherein the battery module group cluster is formed by connecting at least 1 and more than 1 battery module with controlled switching and balanced protection, and connecting the positive electrode of any 2 or more than 2 battery modules with controlled switching and balanced protection with the negative electrode of the adjacent battery module one by one.
6. The battery module controller, the battery cluster and the energy storage system according to claim 5, wherein the positive electrodes and the negative electrodes of at least 1 and more battery module clusters are respectively connected in parallel to a corresponding positive direct current bus and a corresponding negative direct current bus, the positive direct current bus and the negative direct current bus are connected to a power converter or a direct current power device, and meanwhile, an energy storage system control device is respectively connected with a 1 st communication interface arranged in a battery monitoring and switching control circuit in each battery module through an energy storage system control communication line and is connected with the power converter or the direct current power device to form a battery energy storage control path and a battery energy storage system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220253631.4U CN218586899U (en) | 2022-02-08 | 2022-02-08 | Battery module controller, battery cluster and energy storage system |
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|---|---|---|---|
| CN202220253631.4U CN218586899U (en) | 2022-02-08 | 2022-02-08 | Battery module controller, battery cluster and energy storage system |
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