CN211239413U - Multi-path battery combiner - Google Patents
Multi-path battery combiner Download PDFInfo
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- CN211239413U CN211239413U CN202020162517.1U CN202020162517U CN211239413U CN 211239413 U CN211239413 U CN 211239413U CN 202020162517 U CN202020162517 U CN 202020162517U CN 211239413 U CN211239413 U CN 211239413U
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Abstract
The utility model discloses a multipath battery combiner, which comprises a plurality of groups of battery packs of different types; the input end of each group of main circuits is connected with the anode of one group of battery packs, the output end of each group of main circuits is connected with the anode of a direct-current power supply, and the cathode of the direct-current power supply is connected with the cathode of each group of battery packs; one end of the control circuit is connected with the plurality of groups of main circuits; and the input end of the auxiliary power supply is connected with the negative electrode of the direct-current power supply and the negative electrode of each group of battery pack, and the output end of the auxiliary power supply is connected with the control circuit, the positive electrode of the direct-current power supply and the output end of each group of main circuits. The utility model discloses a carry out the independent control to each parallelly connected group battery, guarantee that each group battery voltage is the same, and then realize the dilatation of battery, greatly reduced resource loss and investment cost to the integration management and the old and useless of different grade type, different brand, different capacity, different batch group batteries.
Description
Technical Field
The utility model relates to a battery application technology field, concretely relates to multichannel battery combiner.
Background
With the development of digitalization and intellectualization of the transformer substation, the load of a direct current operation power supply system for the transformer substation is heavier and heavier, and the capacity expansion of a battery is not slow at all. In order to ensure the charging and discharging consistency of the storage batteries, the existing capacity expansion group matching scheme requires the same capacity, the same type, the same manufacturer and the same batch, and the battery pack adopts the buses for parallel connection, so that the old use of the old batteries is not realized, a large amount of resource waste is caused, and the investment cost is increased. If a new battery is directly connected in parallel with an old battery, the charging and discharging of each battery pack are not balanced, and problems such as circulation current and the like may be caused.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model discloses it is still another purpose to provide a multichannel battery combiner, it is through carrying out the independent control to each parallelly connected group battery, guarantees that each group battery voltage is the same, and then realizes the dilatation of battery, greatly reduced resource loss and investment cost to the integration management and the old and useless of different grade type, different brand, different capacity, different batch group batteries.
To achieve these objects and other advantages in accordance with the purpose of the invention, a multi-path battery combiner is provided, including:
a battery pack assembly including a plurality of groups of different types of battery packs;
a battery sharing manager, comprising:
the number of the main circuits is the same as that of the battery packs, the input end of each main circuit is connected with the anode of one battery pack to provide a passage for charging and discharging of the battery packs, the output end of each main circuit is connected with the anode of a direct-current power supply, and the cathode of the direct-current power supply is connected with the cathode of each battery pack;
one end of the control circuit is connected with each group of main circuits and is used for controlling the working state of each group of main circuits according to the working state of the direct-current power supply;
and the input end of the auxiliary power supply is connected with the negative electrode of the direct-current power supply and the negative electrode of each group of battery pack, and the output end of the auxiliary power supply is connected with the control circuit, the positive electrode of the direct-current power supply and the output end of each group of main circuit, so that a stable power supply is provided for the battery sharing manager.
Preferably, in the multi-cell combiner, the control circuit includes:
the CPU and the detection circuit, the display circuit and the communication circuit which are connected with the CPU;
the detection circuit is used for detecting the working state of the total battery pack;
the communication circuit communicates with an upper computer.
Preferably, in the multi-cell combiner, the main circuit includes:
the MOS transistor comprises a first MOS transistor and a second MOS transistor, wherein the source electrode of the first MOS transistor is connected with the source electrode of the second MOS transistor;
the anode of the first parasitic diode is connected with the source electrode of the first MOS tube, and the cathode of the first parasitic diode is connected with the drain electrode of the first MOS tube;
the anode of the second parasitic diode is connected with the source electrode of the second MOS tube, and the cathode of the second parasitic diode is connected with the drain electrode of the second MOS tube;
one end of the first driving circuit is connected with the grid of the first MOS tube, and the other end of the first driving circuit is connected with the control circuit;
and one end of the second driving circuit is connected with the grid electrode of the second MOS tube, and the other end of the second driving circuit is connected with the control circuit.
Preferably, in the multi-path battery combiner, a drain of the first MOS transistor is connected to the positive electrode of the dc power supply, and a drain of the second MOS transistor is connected to the positive electrode of the battery pack correspondingly connected to the main circuit where the second MOS transistor is located.
Preferably, in the multi-path battery combiner, the second driving circuit is connected to a bootstrap circuit for supplying power to the second driving circuit.
Preferably, in the multi-path battery combiner, the bootstrap circuit is connected to a battery pack connected to a main circuit where the second driving circuit is located.
The utility model discloses at least, include following beneficial effect:
firstly, each battery pack of the utility model can independently carry out the control of uniform floating charge, current limiting and the like, thereby realizing the integrated management and the waste utilization of battery packs of different types, brands, capacities and batches, and greatly reducing the resource loss and the investment cost;
the utility model provides two modes of synchronous and grouped charging, the discharging adopts synchronous discharging, and the balanced management of charging and discharging of the battery pack is realized;
third, no matter each battery pack of the utility model is in a charging or discharging state, no circulation occurs, thereby prolonging the service life of the battery pack;
the main circuit of the multi-path battery combiner adopts reverse series connection of the MOSFETs and the design of opposite tops of parasitic diodes, can realize seamless switching between charging and discharging states, and has small conduction voltage drop, low loss and small volume;
fifthly, the utility model discloses a multichannel battery combiner has perfect alarm system and safeguard measure to can with host computer communication, guarantee operating power supply system's power supply safety jointly.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a multi-path battery combiner in one embodiment of the present invention;
fig. 2 is a schematic diagram of a main circuit structure in one embodiment of the present invention;
fig. 3 is a schematic diagram of a control circuit structure in one of the technical solutions of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In one of them technical scheme, as shown in fig. 1, the utility model provides a multichannel battery combiner, include:
a battery pack assembly including a plurality of groups of different types of battery packs;
a battery sharing manager, comprising:
the number of the main circuits is the same as that of the battery packs, the input end of each main circuit is connected with the anode of one battery pack to provide a passage for charging and discharging of the battery packs, the output end of each main circuit is connected with the anode of a direct-current power supply, and the cathode of the direct-current power supply is connected with the cathode of each battery pack;
one end of the control circuit is connected with each group of main circuits and is used for controlling the working state of each group of main circuits according to the working state of the direct-current power supply;
and the input end of the auxiliary power supply is connected with the negative electrode of the direct-current power supply and the negative electrode of each group of battery pack, and the output end of the auxiliary power supply is connected with the control circuit, the positive electrode of the direct-current power supply and the output end of each group of main circuit, so that a stable power supply is provided for the battery sharing manager.
The multi-path battery combiner comprises a battery sharing manager and a plurality of groups of battery packs of different types, wherein the battery sharing manager comprises a plurality of groups of main circuits, a control circuit and an auxiliary power supply;
the input end of each main circuit is connected with the anode of one battery pack, the output end of each main circuit is connected with the anode of a direct current power supply, the cathode of the direct current power supply is connected with the cathode of each battery pack, and the direct current power supply and each battery pack are connected with a load and can supply power to the load;
one end of the control circuit is connected with the plurality of groups of main circuits, the control circuit can detect signals such as voltage, current and the like of each group of main circuits, judge the working state of the direct current power supply and further control the conduction state of each group of main circuits, and provide a path for charging and discharging of the battery pack correspondingly connected with each group of main circuits;
the input end of the auxiliary power supply is connected with the negative electrode of the direct-current power supply and the negative electrode of each group of battery packs, the output end of the auxiliary power supply is connected with the control circuit, the positive electrode of the direct-current power supply and the output end of each group of main circuits, and the input end of each group of main circuits is connected with the positive electrode of each group of battery packs.
To basic station power supply system, the reliability is extremely important, for guaranteeing safe, reliable operation, the utility model provides a battery sharing manager can provide complete warning and protection system, mainly has the battery to cross under-voltage, the battery overflows, the battery overtemperature, the battery off-line, DC power supply crosses under-voltage etc..
The utility model discloses at least, include following beneficial effect: the utility model adopts the control of multiple groups simultaneously, under the same input power, the charging and discharging of the battery packs of different brands, different capacities and different batches are integrated and managed, thereby realizing the capacity expansion, the waste utilization, the replacement and the recombination of the batteries of the power operation power supply system, and simultaneously reducing the investment cost; the auxiliary power supply is connected with the direct-current power supply and each group of battery packs, and the auxiliary power supply can obtain electric quantity no matter whether the direct-current power supply is electrified or not, so that a power supply is provided for the battery sharing manager, and the normal work of the battery sharing manager is guaranteed.
In another technical solution, as shown in fig. 3, in the multi-cell combiner, the control circuit includes:
the CPU and the detection circuit, the display circuit and the communication circuit which are connected with the CPU;
the detection circuit is used for detecting the working state of the total battery pack;
the communication circuit communicates with an upper computer.
The detecting circuit can detect the voltage, current, temperature and other signals of each main circuit and the total battery pack, and then transmits the signals to the CPU, the CPU transmits the received detection information to the display circuit and the communication circuit, the display circuit is used for inquiring and displaying the working state of each battery pack, and can set various parameters of the battery sharing manager, such as charging and discharging mode, float charging piezoelectric, current limiting value and various alarming and protecting values, etc., the display circuit transmits the reset parameter information to the CPU, the communication circuit transmits the received information to the upper computer for communication, the upper computer reads the current running state information of the system, sets various parameters and then transmits the feedback information to the CPU through the communication circuit, the CPU performs comprehensive processing and analysis on the information fed back from the display circuit and the communication circuit, and then sends corresponding driving signals to the main circuit, the working state of the main circuit is changed, so that the charging and discharging states of the battery packs are managed.
In another technical solution, as shown in fig. 2, in the multi-cell combiner, the main circuit includes:
the MOS transistor comprises a first MOS transistor and a second MOS transistor, wherein the source electrode of the first MOS transistor is connected with the source electrode of the second MOS transistor;
the anode of the first parasitic diode is connected with the source electrode of the first MOS tube, and the cathode of the first parasitic diode is connected with the drain electrode of the first MOS tube;
the anode of the second parasitic diode is connected with the source electrode of the second MOS tube, and the cathode of the second parasitic diode is connected with the drain electrode of the second MOS tube;
one end of the first driving circuit is connected with the grid of the first MOS tube, and the other end of the first driving circuit is connected with the control circuit;
and one end of the second driving circuit is connected with the grid electrode of the second MOS tube, and the other end of the second driving circuit is connected with the control circuit.
In the technical scheme, when a direct current power supply is abnormal, a second MOS tube on a main circuit of each battery pack is conducted by default, each battery pack supplies power to an auxiliary power supply and a load through the second MOS tube on the main circuit correspondingly connected with each battery pack and a first parasitic diode connected with the first MOS tube, after a control circuit detects that total battery current is negative, the control circuit judges that a system is in a discharge state and detects the voltage of each battery pack in real time, a first MOS tube (marked as an A1 tube) on the main circuit connected with the battery pack with the highest voltage (marked as a1 st battery pack) is conducted, the 1 st battery pack discharges to provide power for the auxiliary power supply and the load, when the voltage of the 1 st battery pack is 0.8V less than the voltage of the battery pack with the next highest voltage (marked as a2 nd battery pack) (when the parasitic diode conduction voltage drop is 1V at the lowest), an A1 tube is closed, a first MOS tube (marked as an A2 tube) on, then switching to the 2 nd battery pack for discharging, and so on, so that the voltages of the battery packs are kept to synchronously decrease;
the first MOS tube on the main circuit connected with each battery pack is conducted in sequence according to the voltage of each battery pack, so that the conduction loss can be reduced, and the battery pack with high voltage cannot discharge to the battery pack with low voltage due to the blocking effect of the first parasitic diode on the first MOS tube, thereby avoiding the generation of circulation;
when the voltage of the battery pack is higher than the set uniform charging voltage value, the battery pack is converted into a floating charging state, the duty ratio of the PWM signal of the first MOS tube on the main circuit correspondingly connected with the battery pack is adjusted, and the average voltage of the battery pack in each group is kept at the set floating charging voltage value.
In another technical scheme, in the multi-path battery combiner, a drain of the first MOS transistor is connected to a positive electrode of the dc power supply, and a drain of the second MOS transistor is connected to a positive electrode of a battery pack correspondingly connected to a main circuit where the second MOS transistor is located.
In another technical solution, as shown in fig. 2, in the multi-path battery combiner, the second driving circuit is connected to a bootstrap circuit for supplying power to the second driving circuit. The bootstrap circuit is used for providing stable power supply for the second MOS tube, and ensures that the second MOS tube is in a conducting state.
In another technical solution, in the multi-path battery combiner, the bootstrap circuit is connected to a battery pack connected to a main circuit where the second driving circuit is located. The bootstrap circuit is connected in series with the battery pack correspondingly connected with the main circuit where the second drive circuit connected with the bootstrap circuit is located, and the battery pack is used for supplying power to the corresponding bootstrap circuit so as to provide a stable power supply for the second MOS tube.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (6)
1. Multichannel battery combiner, its characterized in that includes:
a battery pack assembly including a plurality of groups of different types of battery packs;
a battery sharing manager, comprising:
the number of the main circuits is the same as that of the battery packs, the input end of each main circuit is connected with the anode of one battery pack to provide a passage for charging and discharging of the battery packs, the output end of each main circuit is connected with the anode of a direct-current power supply, and the cathode of the direct-current power supply is connected with the cathode of each battery pack;
one end of the control circuit is connected with each group of main circuits and is used for controlling the working state of each group of main circuits according to the working state of the direct-current power supply;
and the input end of the auxiliary power supply is connected with the negative electrode of the direct-current power supply and the negative electrode of each group of battery pack, and the output end of the auxiliary power supply is connected with the control circuit, the positive electrode of the direct-current power supply and the output end of each group of main circuit, so that a stable power supply is provided for the battery sharing manager.
2. The multi-cell combiner of claim 1, wherein the control circuit comprises:
the CPU and the detection circuit, the display circuit and the communication circuit which are connected with the CPU;
the detection circuit is used for detecting the working state of the total battery pack;
the communication circuit communicates with an upper computer.
3. The multi-cell combiner of claim 1, wherein the main circuit comprises:
the MOS transistor comprises a first MOS transistor and a second MOS transistor, wherein the source electrode of the first MOS transistor is connected with the source electrode of the second MOS transistor;
the anode of the first parasitic diode is connected with the source electrode of the first MOS tube, and the cathode of the first parasitic diode is connected with the drain electrode of the first MOS tube;
the anode of the second parasitic diode is connected with the source electrode of the second MOS tube, and the cathode of the second parasitic diode is connected with the drain electrode of the second MOS tube;
one end of the first driving circuit is connected with the grid of the first MOS tube, and the other end of the first driving circuit is connected with the control circuit;
and one end of the second driving circuit is connected with the grid electrode of the second MOS tube, and the other end of the second driving circuit is connected with the control circuit.
4. The multi-cell combiner of claim 3, wherein a drain of the first MOS transistor is connected to a positive electrode of the DC power supply, and a drain of the second MOS transistor is connected to a positive electrode of a cell group to which the main circuit thereof is correspondingly connected.
5. The multi-cell combiner of claim 3, wherein the second drive circuit is connected with a bootstrap circuit for powering the second drive circuit.
6. The multi-cell combiner of claim 5, wherein the bootstrap circuit is connected to a cell group connected to a main circuit where the second driving circuit is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020162517.1U CN211239413U (en) | 2020-02-11 | 2020-02-11 | Multi-path battery combiner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020162517.1U CN211239413U (en) | 2020-02-11 | 2020-02-11 | Multi-path battery combiner |
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| CN211239413U true CN211239413U (en) | 2020-08-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161996A (en) * | 2021-05-11 | 2021-07-23 | 国网湖南省电力有限公司 | Energy storage battery stack protection circuit and protection method thereof |
| CN113922437A (en) * | 2021-08-18 | 2022-01-11 | 国网浙江省电力有限公司温州供电公司 | Lithium battery non-circulation management method and device capable of being remotely controlled and electronic equipment |
| CN115051451A (en) * | 2022-08-16 | 2022-09-13 | 北京动力京工科技有限公司 | Multi-stage battery combiner and control method |
-
2020
- 2020-02-11 CN CN202020162517.1U patent/CN211239413U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161996A (en) * | 2021-05-11 | 2021-07-23 | 国网湖南省电力有限公司 | Energy storage battery stack protection circuit and protection method thereof |
| CN113922437A (en) * | 2021-08-18 | 2022-01-11 | 国网浙江省电力有限公司温州供电公司 | Lithium battery non-circulation management method and device capable of being remotely controlled and electronic equipment |
| CN113922437B (en) * | 2021-08-18 | 2024-01-23 | 国网浙江省电力有限公司温州供电公司 | Remote-control lithium battery no-loop management method and device and electronic equipment |
| CN115051451A (en) * | 2022-08-16 | 2022-09-13 | 北京动力京工科技有限公司 | Multi-stage battery combiner and control method |
| CN115051451B (en) * | 2022-08-16 | 2022-11-04 | 北京动力京工科技有限公司 | Multi-stage battery combiner and control method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200811 Termination date: 20220211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |