CN111640905A - Battery cluster - Google Patents
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- CN111640905A CN111640905A CN202010455312.7A CN202010455312A CN111640905A CN 111640905 A CN111640905 A CN 111640905A CN 202010455312 A CN202010455312 A CN 202010455312A CN 111640905 A CN111640905 A CN 111640905A
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- 239000011810 insulating material Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 14
- 238000004146 energy storage Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/30—Preventing polarity reversal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery cluster, which relates to the technical field of batteries and comprises a rack and a battery module arranged in the rack, wherein the battery module comprises a shell and a plurality of battery cells arranged in the shell, the battery cells are connected in series, and one of the battery cells is also connected in series with a first fusing device. When the voltage of the battery cluster is in a high-voltage state, the first fusing device is connected in series on one of the battery cores, so that the battery module is prevented from being short-circuited, and the safety of the operation of the battery cluster in the high-voltage state can be realized.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery cluster.
Background
With the continuous popularization of new energy power generation modes such as solar power generation, wind power generation and the like, an energy storage system becomes a mainstream solution for smoothing the fluctuation of new energy power generation in a power system, and also becomes a hot spot of related international and domestic industry research. The battery cluster is used as a key component for storing and releasing electric energy, is key equipment of the energy storage system, and directly influences the safe operation of the energy storage system.
In the related art, a battery cluster is formed by installing a plurality of cells connected in series and parallel in a casing.
However, when the battery cluster operates at high voltage in the related art, there is a problem that the operation of the battery cluster is not safe.
Disclosure of Invention
The invention provides a battery cluster, which aims to solve the problem that the battery cluster in the related art is unsafe to operate when the battery cluster operates at high voltage.
The invention provides a battery cluster which comprises a rack and battery modules arranged in the rack.
The battery module comprises a shell and a plurality of battery cells installed in the shell, and the battery cells are connected in series.
And one of the battery cells is also connected with a first fusing device in series.
Optionally, the number of the battery modules is multiple, and the multiple battery modules are connected in series.
Optionally, a second fusing device is connected in series between a plurality of the battery modules.
Optionally, the frame is made of an insulating material.
Optionally, a controller and a fan are also included.
The fan is installed at one side of the battery module.
The battery module is provided with a temperature sensor, and the temperature sensor is used for detecting a first temperature of the battery core.
The controller is used for acquiring the first temperature detected by the temperature sensor and regulating and controlling the rotating speed of the fan according to the first temperature.
Optionally, a plurality of temperature sensors are arranged on the battery module at intervals, and the temperature sensors are configured to acquire a first temperature of the battery core.
The controller is configured to acquire first temperatures of the battery cells detected by the plurality of temperature sensors, acquire a maximum first temperature and a minimum first temperature among the plurality of first temperatures, and determine a rotation speed of the fan according to the maximum first temperature and the minimum first temperature.
Optionally, the fan has a plurality of gears, each gear having a rotational speed corresponding to the gear and the first temperature range corresponding to the rotational speed.
The controller is further configured to determine a gear of the fan based on the maximum first temperature and the minimum first temperature.
Optionally, a slave controller is connected to the battery module, and each slave controller is configured to acquire the first temperature detected by the temperature sensor in the battery module; the controller is connected with the slave controller to acquire the temperature of the battery module.
Optionally, an adapter plate is further disposed between the controller and the slave controller, and the adapter plate is used for connecting the controller and the slave controller.
Optionally, a dissipation resistor is also connected in series with the slave controller.
The invention provides a battery cluster which comprises a rack and a battery module arranged in the rack, wherein the battery module comprises a shell and a plurality of battery cells arranged in the shell, the plurality of battery cells are connected in series, and one of the plurality of battery cells is also connected in series with a first fusing device. When the voltage of the battery cluster is in a high-voltage state, the first fusing device is connected in series on one of the battery cores, so that the battery module is prevented from being short-circuited, and the safety of the operation of the battery cluster in the high-voltage state can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a battery cluster according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery module in a battery cluster according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a housing in the battery module of FIG. 2;
fig. 4 is a schematic structural view of the rack of fig. 1.
Description of reference numerals:
10-a battery module;
11-a housing;
12-electric core;
13-a first fuse device;
14-a second fuse device;
15-a temperature sensor;
16-a dissipation resistor;
20-a frame;
30-a controller;
31-a slave controller;
32-an adapter plate;
40-a fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The preferential use of renewable energy is particularly important in the environment of global environmental deterioration and fossil energy shortage. At present, solar energy is used as one of popularization modes of new energy power generation, a solar power generation system is applied to various environments, but the fluctuation of generated power is large due to the fact that solar power generation is greatly influenced by seasons and climates. The energy storage system has the functions of stabilizing photovoltaic power generation fluctuation and tracking planned power generation output, so that the combined application of the energy storage system and solar energy becomes a mainstream solution for smoothing new energy power generation fluctuation in a power system, and also becomes a hot spot of related international and domestic industry research. The battery cluster is used as a key component for storing and releasing electric energy, is key equipment of the energy storage system, and directly influences the safe operation of the energy storage system. In the related art, a battery cluster is composed of a plurality of cells connected in series and parallel. However, when the voltage of the battery cluster is in a high-voltage state in the related art, there is a problem that the operation of the battery cluster is not safe.
In order to solve the above problems, according to the battery pack provided by the invention, when the voltage of the battery pack is in a high-voltage state, the first fusing device is connected in series with one of the plurality of battery cells, so that the battery module is prevented from short circuit, and the battery pack can be safely operated at the high voltage.
The battery pack provided by the invention is described in detail below with reference to specific examples.
Fig. 1 is a schematic structural diagram of a battery cluster according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a battery module in a battery cluster according to an embodiment of the present invention; FIG. 3 is a schematic structural view of a housing in the battery module of FIG. 2; fig. 4 is a schematic structural view of the rack of fig. 1.
As shown in fig. 1 to 4, a battery cluster according to the present invention, applied to high voltage, includes a frame 20 and battery modules 10 disposed in the frame 20; the battery module 10 includes a housing 11 and a plurality of battery cells 12 mounted in the housing 11, the plurality of battery cells 12 being connected in series; one cell 12 of the plurality of cells 12 is also connected in series with a first fuse device 13.
The first fusing device 13 may be a fuse.
In an alternative embodiment, the first fuse device 13 may be connected in series between two cells 12 at one end of the plurality of cells 12 in series. In other implementations, the first fuse device 13 may also be connected between the other end of the plurality of cells 12 connected in series or between two cells 12 in the middle.
The first fusing device 13 is connected in series to one of the plurality of battery cells 12, so that the battery module 10 is prevented from short-circuiting, and the battery cluster can be protected during charging and discharging of the battery cluster.
Further, the battery cluster comprises a rack 20 and a battery module 10 arranged in the rack 20, wherein the battery module 10 is composed of a plurality of battery cells 12 which are installed in a housing 11 and connected in series, and the battery cluster can be operated in series at a high voltage of more than 1000 volts; because the first fusing device 13 is connected in series to one of the battery cells 12, the battery module 10 is prevented from short-circuiting, and the operation safety of the battery cluster at high voltage can be realized.
It should be noted that the number of the cells 12 installed in the housing 11 in series in the battery cluster provided by the present invention is greater than the number of the cells 12 in the housing 11 in the related art, so that the energy density in the housing 11 is increased, thereby saving the volume space of the battery cluster and further increasing the energy density of the battery cluster. And the lines in the battery cluster need to be electrically isolated, and the isolation grade needs to ensure the insulation level of 2500V, so that the operation safety of the battery cluster is ensured under high voltage.
The battery cluster provided by the invention comprises a frame 20 and battery modules 10 arranged in the frame 20; the battery module 10 includes a housing 11 and a plurality of battery cells 12 mounted in the housing 11, the plurality of battery cells 12 being connected in series; one cell 12 of the plurality of cells 12 is also connected in series with a first fuse device 13. When the battery cluster provided by the invention runs at high voltage, the first fusing device 13 is connected in series on one battery cell 12 of the plurality of battery cells 12, so that the battery module 10 is prevented from short circuit, and the running safety of the battery cluster at high voltage can be realized.
Alternatively, the battery module 10 is plural, and the plural battery modules 10 are connected in series.
The battery cluster comprises a plurality of battery modules 10, the plurality of battery modules 10 are connected together in series, and each battery module 10 is composed of a plurality of cells 12 which are installed in a casing 11 and connected in series.
In an alternative embodiment, the battery cluster is composed of a plurality of battery modules 10, each battery module 10 is composed of a plurality of cells 12 connected in series and mounted in the housing 11, so that flexible configuration of the battery cluster can be realized, and an external power interface of the battery cluster is supported to support top or bottom wire access.
Further, the battery cluster comprises a rack 20 and a plurality of battery modules 10 arranged in the rack 20, each battery module 10 is composed of a plurality of cells 12 connected in series and mounted in a housing 11, and the plurality of battery modules 10 are connected in series, so that high voltage for the serial operation of the battery cluster can be realized; because the first fusing device 13 is connected in series to one of the battery cells 12, the battery module 10 is prevented from short-circuiting, and the operation safety of the battery cluster at high voltage can be realized.
It should be noted that, when the battery cluster is composed of a plurality of battery modules 10, the plurality of battery modules 10 are connected together in series, each battery module 10 is composed of a plurality of battery cells 12, and the plurality of battery cells 12 are connected together in series, so that the voltage of the battery cluster can be over 1000 volts. In addition, when the battery cluster performs power conversion at more than 1000 volts, the conversion efficiency of the converter is improved.
Optionally, a second fusing device 14 is also connected in series between the plurality of battery modules 10.
Wherein, the battery cluster includes a plurality of battery modules 10, and a plurality of battery modules 10 are connected together through series connection, and a second fusing device 14 is also connected in series between a plurality of battery modules 10. The second disconnect device 14 may be a fuse.
In an alternative embodiment, a second fusing device 14 is further connected in series between the plurality of battery modules 10, so as to prevent a short circuit between the plurality of battery modules 10, and thus protect the battery cluster during charging and discharging of the battery cluster.
It should be noted that, when the battery cluster is composed of a plurality of battery modules 10, in order to protect the battery cluster during the charging and discharging of the battery cluster, a first fusing device 13 may be provided on each battery module 10 or a second fusing device 14 may be connected in series between each battery module 10. In other implementations, when the battery cluster is composed of a plurality of battery modules 10, in order to protect the battery cluster during the charge and discharge of the battery cluster, a first fusing device 13 may be provided on each battery module 10, and a second fusing device 14 may be connected in series between each battery module 10.
Optionally, the battery pack further includes a switch box, a positive input end of the switch box is connected to a positive electrode of a branch formed by serially connecting the plurality of battery modules 10, and a negative input end of the switch box is connected to a negative electrode of a branch formed by serially connecting the plurality of battery modules 10.
The switch box (not shown in the figure) comprises a positive pole branch circuit, a negative pole branch circuit and an overcurrent protection circuit. The input end of the positive pole branch is the positive input end of the switch box, and the output end of the positive pole branch is the positive output end of the switch box; the input end of the negative branch circuit is used as the negative input end of the switch box, and the output end of the negative branch circuit is used as the negative output end of the switch box. And fuses are arranged on the positive pole and the negative pole of the switch box.
In an alternative embodiment, the battery cluster includes a plurality of battery modules 10, the plurality of battery modules 10 are connected in series in sequence to form a series branch, a positive pole of the series branch is connected to the positive input terminal of the switch box, and a negative pole of the series branch is connected to the negative input terminal of the switch box. Because the overcurrent protection circuit is arranged in the switch box, when the circuit connected with the battery cluster has overcurrent faults, the current surge and the voltage surge generated in the current loop can be reduced. The positive output end of the switch box is used as the positive pole of the battery cluster, and the negative output end of the switch box is used as the negative pole of the battery cluster.
Further, when the battery cluster is applied to the light storage power generation system, short circuit or overcurrent protection of the battery cluster can be realized in the following mode.
In an optional embodiment, when only a battery cluster in the optical storage power generation system is short-circuited, the first fusing device 13 or the second fusing device 14 can be triggered to be disconnected preferentially, and a fuse in the switch box is not disconnected, so that current impact and voltage impact generated in a current loop are reduced, and the battery cluster is protected.
In another alternative embodiment, when only the energy storage converter in the optical storage power generation system is short-circuited, the fuse in the switch box is disconnected, and the first fusing device 13 and the second fusing device 14 in the battery cluster are not disconnected, so that the protection of the battery cluster is realized.
In another alternative embodiment, when a short circuit occurs between a battery cluster and a module outside the energy storage converter in the optical storage power generation system, a fuse in the switch box is disconnected, and the first fusing device 13 and the second fusing device 14 in the battery cluster are not disconnected, so that the battery cluster is protected.
Optionally, the frame 20 is made of an insulating material.
The frame 20 is made of an insulating material, so that the battery cluster can be guaranteed to run at the 4000V insulating level.
In an alternative embodiment, the frame 20 is made of a composite material of synthetic paper, and a plurality of battery modules 10 are mounted in the frame 20 in series, so that the battery pack can be safely operated at a high voltage.
Optionally, a controller 30 and a fan 40 are also included. A fan 40 is installed at one side of the battery module 10, and a temperature sensor 15 is disposed on the battery module 10, where the temperature sensor 15 is configured to detect a first temperature of the battery cell 12. The controller 30 is configured to obtain a first temperature detected by the temperature sensor 15, and regulate the rotation speed of the fan 40 according to the first temperature.
The controller 30 is provided with a first temperature range corresponding to the rotation speed of the fan 40, that is, the controller 30 obtains the first temperature detected by the temperature sensor 15, and then determines the first temperature range corresponding to the first temperature, so as to know the rotation speed of the fan 40 corresponding to the first temperature, and then the controller 20 regulates and controls the rotation speed of the fan 40.
In an optional embodiment, the battery module 10 includes a housing 11 and a plurality of battery cells 12 installed in the housing 11, a temperature sensor 15 is disposed on the plurality of battery cells 12, the temperature sensor 15 is configured to acquire a first temperature of the battery cells 12, the controller 20 acquires the first temperature of the battery cells 12, and then determines a first temperature range corresponding to the first temperature, so that a rotation speed of the fan 40 corresponding to the first temperature can be known, and then the controller 20 regulates and controls the rotation speed of the fan 40, thereby achieving temperature equalization among the battery cells 12 in the battery cluster.
Further, when the battery cluster is composed of a plurality of battery modules 10, the plurality of battery modules 10 are connected together in series, each battery module 10 includes a housing 11 and a plurality of battery cells 12 installed in the housing 11, a temperature sensor 15 is arranged on each of the plurality of battery cells 12, the temperature sensor 15 is used for acquiring a first temperature of each battery cell 12, the controller 20 acquires the first temperature of each battery cell 12, and then judges a first temperature range corresponding to the first temperature, so that the rotating speed of the fan 30 corresponding to the first temperature can be known, and further, the rotating speed of the fan 40 can be regulated and controlled by the controller 20, and further, temperature balance among the battery cells 12 in the battery cluster can be realized.
Optionally, the battery module 10 includes a housing 11 and a plurality of battery cells 12 mounted in the housing 11; a plurality of temperature sensors 15 are arranged on the battery module 10 at intervals, and the temperature sensors 15 are used for acquiring a first temperature of the battery core 12; the controller 20 is configured to acquire the first temperatures of the battery cells 12 detected by the plurality of temperature sensors 15, acquire a maximum first temperature or a minimum first temperature of the plurality of first temperatures, and determine the rotation speed of the fan 40 according to the maximum first temperature and the minimum first temperature.
In an alternative embodiment, a plurality of cells 12 are mounted on the housing 11. The battery module 10 is provided with a plurality of temperature sensors 15, and the temperature sensors 15 are arranged at intervals.
Further, the controller 30 obtains a plurality of first temperatures detected by the temperature sensor 15, the controller 20 selects a maximum first temperature and a minimum first temperature from the plurality of first temperatures, and finally the controller 20 determines the rotation speed of the fan 40 according to the maximum first temperature and the minimum first temperature, so that the control precision of the rotation speed of the fan 40 is improved.
Optionally, the fan 40 has a plurality of gear positions, each gear position having a rotational speed corresponding to the gear position and a first temperature range corresponding to the rotational speed; the controller 30 is also configured to determine the gear of the fan 40 based on the maximum first temperature and the minimum first temperature.
Wherein the fan 40 is provided with a plurality of gears, each gear being provided with a rotational speed corresponding to the gear and a first temperature range corresponding to the rotational speed. The first temperature range specifically refers to a temperature range corresponding to each gear.
In an alternative embodiment, the controller 20 obtains a plurality of first temperatures detected by the temperature sensor 15, and the controller 20 selects the maximum first temperature or the minimum first temperature from the plurality of first temperatures. The controller 20 determines a first temperature range corresponding to the maximum first temperature or the minimum first temperature, so that the rotation speed corresponding to the maximum first temperature or the minimum first temperature can be known, the gear of the fan 30 can be determined by the controller 10, and the intelligent control of the fan is realized.
Optionally, one slave controller 31 is connected to the battery module 10, and each slave controller 31 is configured to obtain a first temperature detected by the temperature sensor 15 in the battery module 10; the controller 30 is connected to the slave controller 31 to acquire the temperature of the battery module 10.
Wherein, the controller 31 transmits the first temperature detected by the temperature sensor 15 in the battery module 10 to the controller 30, and the controller 30 regulates and controls the rotation speed of the fan 40 corresponding to the battery module 10 according to the first temperature.
Of course, in other implementations, the controller 31 may also obtain the first temperature detected by the plurality of temperature sensors 15 in the battery module 10 and transmit the first temperature to the controller 15, and then the controller 30 obtains the maximum first temperature or the minimum first temperature from the plurality of first temperatures, and determines the rotation speed of the fan 40 according to the maximum first temperature and the minimum first temperature.
In an alternative embodiment, the controller 20 obtains the first temperature transmitted from the controller 21, and then determines a first temperature range corresponding to the first temperature, so as to know the rotation speed of the fan 40 corresponding to the first temperature, and further the controller 20 regulates and controls the rotation speed of the fan 40.
Further, the battery cluster is composed of a plurality of battery modules 10, each battery module 10 is connected with a slave controller 31, and each slave controller 31 is used for acquiring a first temperature detected by the temperature sensor 15 in the battery module 10; the controller 30 is connected with the slave controller 31 to obtain the temperature of the battery module 10, so that the intelligent regulation and control of the fan 40 are realized, and the temperature of the battery cluster can be intelligently controlled.
Optionally, an adapter board 32 is further disposed between the controller 30 and the slave controller 31, and the adapter board 32 is used for connecting the controller 30 and the slave controller 31.
The controller 30 and the slave controller 31 are connected through the adapter plate 32, so that the controller 30 and the slave controller 31 can be quickly connected. The acquired first temperature detected by the temperature sensor 15 in the battery module 10 is transmitted from the controller 31 to the interposer 32, and then the interposer 32 transmits the first temperature to the controller 30.
In an alternative embodiment, the controller 30 obtains the first temperature transmitted by the adapter plate 32, and then determines the first temperature range corresponding to the first temperature, so as to know the rotation speed of the fan 40 corresponding to the first temperature, and further the controller 30 regulates and controls the rotation speed of the fan 40. The controller 30 is connected with the adapter plate 32 through a CAN bus; the adapter board 322 is connected to the slave controller 31 via an SPI bus.
Optionally, a dissipation resistor 16 is also connected in series with the slave controller 31.
The controller 31 is connected to the plurality of battery cells 12 through a voltage collection line, so as to obtain first voltages of the battery cells 12, and the controller 30 is configured to obtain first voltages of the plurality of battery cells 12, obtain a maximum first voltage and a minimum first voltage of the plurality of first voltages, and regulate opening or closing of the dissipation resistor 16 according to the maximum first voltage and the minimum first voltage. The dissipation resistor 16 is configured to maintain a voltage difference between the maximum first voltage and the minimum first voltage of the plurality of battery cells 12 within a voltage threshold of battery balancing, so as to achieve circuit balancing of the battery module 10. The voltage threshold for cell balancing may be determined in practice, for example 20 mV.
In an optional implementation manner, the slave controller 31 on the battery module 10 acquires the first voltages of the battery cells 12 through the voltage acquisition line, and the controller 30 is configured to acquire the first voltages of the plurality of battery cells 12, acquire a maximum first voltage and a minimum first voltage of the plurality of first voltages, and regulate opening or closing of the dissipation resistor 16 according to the maximum first voltage and the minimum first voltage, so that a difference between the maximum first voltage and the minimum first voltage is maintained within a voltage threshold of battery balancing, thereby implementing circuit balancing of the battery module 10; when the difference between the maximum first voltage and the minimum first voltage is less than or equal to the voltage threshold for cell balancing, the controller 30 turns off the dissipation resistor 16.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A battery cluster is applied to high voltage and is characterized by comprising a frame and battery modules arranged in the frame;
the battery module comprises a shell and a plurality of battery cells arranged in the shell, and the battery cells are connected in series;
and one of the battery cells is also connected with a first fusing device in series.
2. The battery cluster according to claim 1, wherein the battery module is plural, and the plural battery modules are connected in series.
3. The battery cluster according to claim 2, wherein a second fusing device is further connected in series between a plurality of the battery modules.
4. The battery cluster of claim 3, wherein the frame is made of an insulating material.
5. The battery cluster of any of claims 1-4, further comprising a controller and a fan;
the fan is installed on one side of the battery module;
the battery module is provided with a temperature sensor, and the temperature sensor is used for detecting a first temperature of the battery core;
the controller is used for acquiring the first temperature detected by the temperature sensor and regulating and controlling the rotating speed of the fan according to the first temperature.
6. The battery cluster according to claim 5, wherein a plurality of temperature sensors are arranged on the battery module at intervals, and the temperature sensors are used for acquiring a first temperature of the battery cells;
the controller is configured to acquire first temperatures of the battery cells detected by the plurality of temperature sensors, acquire a maximum first temperature and a minimum first temperature among the plurality of first temperatures, and determine a rotation speed of the fan according to the maximum first temperature and the minimum first temperature.
7. The battery cluster of claim 6, wherein the fan has a plurality of gears, each gear having a rotational speed corresponding to the gear and the first temperature range corresponding to the rotational speed;
the controller is further configured to determine a gear of the fan based on the maximum first temperature and the minimum first temperature.
8. The battery cluster according to claim 5, wherein a slave controller is connected to the battery modules, each slave controller being configured to obtain the first temperature detected by the temperature sensor in the battery module; the controller is connected with the slave controller to acquire the temperature of the battery module.
9. The battery cluster according to claim 8, wherein an adapter plate is further arranged between the controller and the slave controller, and the adapter plate is used for connecting the controller and the slave controller.
10. The battery cluster of claim 8, wherein the slave controller is also connected in series with a dissipation resistor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010455312.7A CN111640905A (en) | 2020-05-26 | 2020-05-26 | Battery cluster |
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| CN202010455312.7A CN111640905A (en) | 2020-05-26 | 2020-05-26 | Battery cluster |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839402A (en) * | 2021-09-24 | 2021-12-24 | 远景能源有限公司 | Energy storage battery cluster and energy storage system |
| WO2022183772A1 (en) * | 2021-03-02 | 2022-09-09 | 阳光电源股份有限公司 | Battery cluster and energy storage system |
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