CN110601299A - Battery capable of switching equalization mode, active equalization module and battery equalization method - Google Patents
Battery capable of switching equalization mode, active equalization module and battery equalization method Download PDFInfo
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- CN110601299A CN110601299A CN201910900477.8A CN201910900477A CN110601299A CN 110601299 A CN110601299 A CN 110601299A CN 201910900477 A CN201910900477 A CN 201910900477A CN 110601299 A CN110601299 A CN 110601299A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005669 field effect Effects 0.000 claims description 17
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 230000004044 response Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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Abstract
The invention discloses a battery capable of switching an equalization mode, an active equalization module and a battery equalization method. Wherein, this battery includes: a plurality of battery modules connected in series to constitute an assembled battery; the circuit board is arranged on the upper surface of the combined battery, and a voltage acquisition interface, a passive equalization interface and an active equalization interface are arranged on the circuit board; the plurality of battery modules are connected in parallel to the voltage acquisition interface, and the voltage acquisition interface is respectively connected with the passive equalization interface and the active equalization interface. According to the invention, the balance mode can be switched according to the actual discharge state of the battery module, and the balance efficiency and the balance effect are improved.
Description
Technical Field
The invention relates to the technical field of energy storage equipment, in particular to a battery capable of switching an equalization mode, an active equalization module and a battery equalization method.
Background
The rated voltage of a single battery core is generally lower than 4V, and the battery is only suitable for electric products consuming small current. In order to further expand the application range of the battery core, the battery cores are often required to be connected in series or in parallel to form a battery module, and then the battery module forms a combined battery. Because the battery module body has the nonconformity in internal resistance, capacity, self-discharge, simple carry out the series-parallel connection with the battery module, be difficult to reach effect safe, the rational utilization battery module electric energy. Therefore, in order to improve the utilization rate and the safety of the module, the balancing module needs to be configured, so that the difference of the battery module in the use process is minimized.
The battery module equalization is divided into two types, one is active equalization and the other is passive equalization. The conventional passive equalization is that the battery modules are connected with a resistor loop in parallel, so that the battery modules are equalized for a long time, and the equalization process is long and simple and is not suitable for high-rate charging and discharging. The active balance can achieve the purpose that the high-voltage battery module among the battery modules carries out charging processing on the low-voltage battery module, but a power supply loop is complex, the size of the acquisition module is increased, and the cost is high.
The existing battery generally only adopts an equalization mode and cannot be flexibly switched.
Aiming at the problem that the equalization mode of the battery module in the prior art can not be switched according to the actual condition of the battery module, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a battery capable of switching an equalization mode, an active equalization module and a battery equalization method, and aims to solve the problem that the equalization mode of a battery module in the prior art cannot be switched according to the actual condition of the battery module.
In order to solve the above technical problem, the present invention provides a battery capable of switching an equalization mode, wherein the battery comprises:
a plurality of battery modules connected in series to constitute an assembled battery;
the circuit board is arranged on the upper surface of the combined battery, and a voltage acquisition interface, a passive equalization interface and an active equalization interface are arranged on the circuit board;
the plurality of battery modules are connected in parallel to the voltage acquisition interface, and the voltage acquisition interface is respectively connected with the passive equalization interface and the active equalization interface.
Furthermore, a resistor is connected between the positive electrode and the negative electrode of the battery module and used for consuming battery energy so as to balance voltages among different battery modules.
Furthermore, a protection element is connected between the positive electrode and the negative electrode of the battery module and is used for cutting off the circuit when the current in the circuit is overlarge.
Further, the protection element is a fuse, and when the current in the circuit exceeds a predetermined value, the fuse is fused by the heat generated by the fuse, and the circuit is disconnected.
The invention also provides an active equalization module, wherein the circuit comprises:
the connecting terminal is connected with the active equalization interface of the combined battery and is used for realizing the electric connection between the combined battery and the active equalization module;
a plurality of active balanced acquisition interfaces respectively connected with the connection terminals,
one end of each switch element is connected with each active equalization acquisition interface in a one-to-one correspondence mode, and the other end of each switch element is connected with an active equalization power supply;
and the active equalization power supply is used for supplying power to the active equalization acquisition interface so as to realize active equalization of the voltage of each battery module of the combined battery.
Further, the switching element is a field effect transistor.
Further, the switching element further includes a diode connected in anti-parallel across the field effect transistor.
Furthermore, the active balance interface of the connecting terminal and the combined battery is a male-female connector clip which is matched with each other.
The invention also provides a battery equalization method, wherein the method comprises the following steps:
judging the discharge state of the battery through the collected voltage data;
switching an equalization mode according to the discharge state;
wherein the battery discharge state comprises: low-rate discharge and high-rate discharge;
the equalization modes include an active equalization mode and a passive equalization mode.
Further, switching an equalization mode according to the discharge state includes:
if the battery discharge state is low-rate discharge, starting a passive equalization mode;
and if the battery discharge state is high-rate discharge, starting an active equalization mode.
Further, initiating a passive equalization mode comprises: controlling a passive equalization interface of the combined battery to be communicated with a passive equalization circuit;
initiating an active equalization mode includes: controlling an active equalization interface of the combined battery to be communicated with an active equalization module;
the passive equalization interface and the active equalization interface are arranged on a circuit board of the combined battery and are connected with each battery module through a voltage acquisition interface.
The invention also provides a computer-readable storage medium, on which a computer program is stored, characterized in that the program realizes the above-mentioned method when executed by a processor.
By applying the technical scheme of the invention, the voltage acquisition interface, the passive equalization interface and the active equalization interface are arranged on the circuit board of the combined battery, and the battery module is connected with the passive equalization interface and the active equalization interface through the voltage acquisition interface, so that the passive equalization mode and the active equalization mode can be switched according to the actual condition of the battery module, and the equalization effect and the equalization efficiency are improved.
Drawings
Fig. 1 is an external structural view of a battery according to an embodiment of the present invention;
fig. 2 is an internal circuit diagram of a battery according to an embodiment of the present invention;
FIG. 3 is a diagram of an active equalization module according to an embodiment of the present invention;
fig. 4 is a structural diagram of a battery PACK according to another embodiment of the present invention;
fig. 5 is an internal circuit diagram of a battery PACK according to another embodiment of the present invention;
FIG. 6 is a circuit diagram of an active equalization module according to another embodiment of the present invention;
fig. 7 is a flowchart of a battery equalization method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The present embodiment provides a battery capable of switching an equalization mode:
fig. 1 is an external structural view of a battery according to an embodiment of the present invention, as shown in fig. 1, the battery including:
a plurality of battery modules 1 connected in series to constitute an assembled battery;
in specific implementation, the positive electrode and the negative electrode of the battery modules are sequentially connected end to form a series circuit, the number of the battery modules connected in series is N, where N is an integer greater than 1, and may be, for example, 2, 3, 5, or more than 5.
The circuit board 2 is arranged on the upper surface of the combined battery, and a voltage acquisition interface 21, a passive balance interface 22 and an active balance interface 23 are arranged on the circuit board 2;
in this embodiment, the active equalization interface 23 includes a plurality of pins, and the number of the pins is the same as that of the battery modules, and the pins are connected with the battery modules in a one-to-one correspondence manner through conductive traces disposed inside the battery.
When the battery is specifically implemented, an insulating shell is generally arranged outside the battery, holes which are adaptive to the sizes of the passive equalization interface 22 and the active equalization interface 23 are formed in the positions, corresponding to the passive equalization interface 22 and the active equalization interface 23, of the insulating shell, so that the passive equalization interface 22 and the active equalization interface 23 are exposed, and by the arrangement, after the insulating shell is packaged by the battery, if debugging is needed, the insulating shell does not need to be disassembled, and an active equalization module or a passive equalization circuit can be directly connected into the exposed passive equalization interface 22 and the exposed active equalization interface for debugging.
It should be noted that, in order to highlight the core invention point of the present invention, other elements, such as a temperature acquisition interface, which are not related to the inventive concept of the present invention, are omitted from the circuit board 2, and the omitted other elements are known in the art and are not described herein again.
Fig. 2 is an internal circuit diagram of a battery according to an embodiment of the present invention, and as shown in fig. 2, the plurality of battery modules 1 are connected in parallel to the voltage collecting interface 21, and the voltage collecting interface is respectively connected to the passive equalizing interface 22 and the active equalizing interface 23.
In this embodiment, a resistor R is connected between the positive electrode and the negative electrode of the battery module for consuming battery energy to balance voltages between different battery modules.
In this embodiment, a protection element FU is further connected between the positive electrode and the negative electrode of the battery module, and is used for cutting off the circuit when the current in the circuit is too large.
Specifically, the protection element FU is a fuse, and when the current in the circuit exceeds a predetermined value, the fuse is fused by the heat generated by itself to open the circuit.
The voltage acquisition interface, the passive equalization interface and the active equalization interface are arranged on the circuit board of the combined battery, and the battery module is connected with the passive equalization interface and the active equalization interface through the voltage acquisition interface, so that the passive equalization mode and the active equalization mode can be switched according to the actual condition of the battery module, and the equalization effect and the equalization efficiency are improved.
Example 2
The present embodiment provides an active equalization module:
fig. 3 is a diagram of an active equalization module according to an embodiment of the present invention, and as shown in fig. 3, the circuit includes:
the connecting terminal 10 is connected with an active equalization interface 23 of the assembled battery and is used for realizing the electric connection between the assembled battery and the active equalization module;
in this embodiment, the connection terminal 10 includes a plurality of connection pins, the number of the connection pins is the same as that of the active balanced acquisition interfaces 20, each connection pin corresponds to each active balanced acquisition interface 20 one by one, and the inside of the connection terminal is communicated through a conductive circuit, and the connection terminal 10 is connected with each active balanced acquisition interface 20 through each connection pin connection, and further connected with the active balanced power supply 30;
on the other hand, the number of connection pins of the connection terminal 10 is the same as that of the active equalization interface 23 described in embodiment 1, and the pins are connected in a one-to-one correspondence.
Through setting up the pin of one-to-one on connecting terminal 10 and the balanced interface 23 of initiative, can make many interconnecting links between a plurality of battery module and a plurality of balanced collection interface 20 of initiative merge into one, simplify the circuit between the inside and the balanced module of initiative of battery, avoid the numerous and diverse winding condition that leads to of circuit to appear.
A plurality of active balanced acquisition interfaces 20 respectively connected with a plurality of pins on the connection terminal 10 in a one-to-one correspondence manner,
a plurality of switching elements Q, one end of each switching element Q being connected to each active equalization acquisition interface 20 in a one-to-one correspondence, and the other end being connected to an active equalization power supply 30;
the active equalization power supply 30 is configured to supply power to the active equalization acquisition interface 20, so as to realize active equalization of voltages of each battery module of the assembled battery.
In this embodiment, the switching element Q is a field effect transistor, a drain D of the field effect transistor is connected to the active equalization acquisition interface 20, a source S of the field effect transistor is connected to the active equalization power supply 30, and a voltage is applied to a gate G to control conduction between the drain D and the source S of the field effect transistor, specifically, if the field effect transistor is of an N-channel type, a voltage is applied to the gate G to turn on the drain D and the source S, and if no voltage is applied, the drain D and the source S are turned off; if the field effect transistor is of a P-channel type, conversely, the drain D and the source S are turned off when a voltage (high potential) is applied to the gate G, and the drain D and the source S are turned on when no voltage (low potential) is applied;
in specific implementation, each field effect transistor is respectively connected with different pins of the DSP chip, whether voltage is applied to the grid G of a certain field effect transistor to apply voltage or not can be controlled through electric signals output by the pins of the DSP chip, and then the conduction or the disconnection between the drain D and the source S is controlled, so that the battery module connected with the field effect transistor is controlled to perform voltage equalization.
In other embodiments of the present invention, the switching element Q may also be of other types, such as an IGBT switching element.
In this embodiment, the switching element further includes a diode D1 connected in anti-parallel across the field effect transistor for enhancing the reliability of the circuit, specifically, the anode of the diode D1 is connected to the source S of the field effect transistor, and the cathode of the diode D1 is connected to the drain D of the field effect transistor.
In this embodiment, the active equalization interface 23 of the connection terminal 10 and the assembled battery is a male and female connector which are matched with each other, specifically, the connection terminal 10 may be a male terminal, correspondingly, the active equalization interface 23 is a female interface, the male terminal is matched with the female interface for plugging, and vice versa, the connection terminal 10 is a female terminal, correspondingly, the active equalization interface 23 is a male interface, the female terminal is matched with the male interface for plugging, so as to enhance the connection firmness of the connection terminal 10 and the active equalization interface 23, and avoid bad circuit contact.
Example 3
Another embodiment of the present invention will be described in detail below by taking a battery PACK (i.e., an assembled battery in the above-described embodiment) including 5 series-connected 4P2S battery modules 100 as an example.
The present embodiment provides a battery PACK and an active equalization module, and the following contents are further explanations of the structures of the battery PACK and the active equalization module:
fig. 4 is a structural diagram of a battery PACK according to another embodiment of the present invention, and as shown in fig. 4, the battery PACK includes a voltage acquisition line outlet 201 (i.e., the voltage acquisition interface 21 in the above embodiment), a passive equalization connection terminal 202 (i.e., the passive equalization interface 22 in the above embodiment), and an active equalization connection terminal 203 (i.e., the active equalization interface 23), and the voltage acquisition line outlet 201, the passive equalization connection terminal 202, and the active equalization connection terminal 203 are all disposed on a PCB board on an upper surface of the battery PACK.
Fig. 5 is a diagram of an internal circuit of a battery PACK according to another embodiment of the present invention, and as shown in fig. 5, in order to achieve rapid equalization of the battery PACK as much as possible, the output terminal of the voltage acquisition line outlet 201 is divided into 2 terminals, one passive equalization terminal 202 and one active equalization terminal 203, which may be used in combination.
A fuse FU1 is processed on the positive voltage acquisition line in the first battery module, a fuse FU2 is arranged on the positive voltage acquisition line in the second battery module, and so on, the breaking grade of the fuses FU1FU2, FU3, FU4 and FU5 is 30kVA, the breaking current is 8A, the withstand voltage grade is 1100V, a 20-omega dissipation resistor (resistors R1-R5) is processed on the negative voltage acquisition line in each 4P2S battery module, and the module can consume high-voltage battery energy through the dissipation resistor to enable the high-voltage battery energy to reach the average voltage.
Fig. 6 is a circuit diagram of an active equalization module according to another embodiment of the present invention, as shown in fig. 6, the active equalization module includes:
active equalization terminal 300 (i.e., connection terminal 10 in the above-described embodiment), active equalization acquisition terminal 400 (i.e., active equalization acquisition interface 20 in the above-described embodiment), active equalization power supply 500 (i.e., active equalization power supply 30 in the above-described embodiment), and switch 600 (i.e., switching element Q in the above-described embodiment)
The battery PACK and the active equalization module of the embodiment have the following characteristics:
(1) because the active balanced current is about 5 times larger than the passive balanced current, in order to prevent the problems of overcurrent or short circuit fire and the like caused by overlarge current in the active balanced process, a detachable fuse is additionally arranged on a PCB, the fuse is of a plug-in type, two ends of the fuse can be inserted on a PCB support, and the fuse is disclosed in a patent ZLSQ 20180236;
(2) the reserved active equalization wiring terminal 203 and the active equalization terminal 300 of the active equalization module are matched male and female connectors;
(3) the active equalization acquisition terminal 400 is matched with a pin of an active equalization wiring terminal 203 on the 4P2S battery module;
(4) the switch 600 of the active equalization module is a field effect transistor, is a switching device, and can be controlled to be closed by using a DSP chip and the like;
(5) the active equalization power supply 500 has the functions of supplying power to the active equalization module, controlling the on/off of the switch 600, receiving voltage data of the battery module, judging and the like;
the active equalization power supply 500 is a generalized software and hardware module, and includes a switch control circuit, a current collection circuit, a filter circuit, a DSP chip circuit, and the like.
(6) The comb-shaped circuit of the active equalization module can well control the discharge or charge of the battery with high voltage and the battery with low voltage, can quickly respond by switching on and off the switch tube, the connecting wire of each battery module uses a positive wire and a negative wire, and the switch tube is connected to the positive wire loop of the battery.
(7) The active equalization module can be used for setting the open voltage range and the outlet of a voltage acquisition line of the battery module, and is generally suitable for the battery module quantity and the battery module type of the conventional battery PACK in the market.
Example 4
The embodiment provides a battery equalization method:
fig. 7 is a flowchart of a battery equalization method according to an embodiment of the present invention, as shown in fig. 7, the method includes:
s101, judging the discharge state of the battery through the acquired voltage data;
s102, switching an equalization mode according to the discharge state;
wherein the battery discharge state comprises: low-rate discharge and high-rate discharge;
the discharge rate is a measure of the discharge speed, and refers to the current value required by the battery when the battery discharges the rated capacity in a specified time.
The equalization modes include an active equalization mode and a passive equalization mode.
In this embodiment, switching the equalization mode according to the discharge state includes:
if the battery discharge state is low-rate discharge, starting a passive equalization mode;
when the battery is discharged at low rate, the passive equalization mode can achieve good equalization effect, so that the passive equalization mode is adopted at the moment.
And if the battery discharge state is high-rate discharge, starting an active equalization mode.
When the battery is discharged in a high-rate mode, the equalization time is long in a passive equalization mode, and the equalization requirement cannot be met, so that the battery needs to be switched to an active equalization mode.
In specific implementation, the starting of the passive equalization mode includes: controlling a passive equalization interface of the combined battery to be communicated with a passive equalization circuit;
in this embodiment, the passive equalization circuit is a passive equalization circuit commonly used in the prior art.
Initiating an active equalization mode includes: controlling an active equalization interface of the combined battery to be communicated with an active equalization module;
the passive equalization interface and the active equalization interface are arranged on a circuit board of the combined battery and are connected with each battery module through a voltage acquisition interface.
The battery discharge state is judged, the balance interface is switched according to the battery discharge state, and then the balance mode is switched, so that the battery balance mode is adaptive to the actual condition of the battery, and the balance efficiency and the balance effect can be improved.
Example 5
The present embodiment provides a computer-readable storage medium on which a computer program is stored, characterized in that the program is adapted to be executed by a processor for implementing the method in the above-described embodiments.
The above described embodiments of circuits or modules are only schematic, where the modules described as separate parts may or may not be physically separate, and the parts shown as modules may or may not be physical modules, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (12)
1. A battery, comprising:
a plurality of battery modules connected in series to constitute an assembled battery;
the circuit board is arranged on the upper surface of the combined battery, and a voltage acquisition interface, a passive equalization interface and an active equalization interface are arranged on the circuit board;
the plurality of battery modules are connected in parallel to the voltage acquisition interface, and the voltage acquisition interface is respectively connected with the passive equalization interface and the active equalization interface.
2. The battery of claim 1, wherein a resistor is connected between the positive electrode and the negative electrode of the battery module for consuming battery energy to equalize voltages between different battery modules.
3. The battery of claim 1, wherein a protection element is further connected between the positive electrode and the negative electrode of the battery module and used for cutting off the circuit when the current in the circuit is too large.
4. The battery of claim 3, wherein the protective element is a fuse that melts with its own heat when the current in the circuit exceeds a predetermined value, thereby breaking the circuit.
5. An active equalization module applied to the battery of claims 1-4, comprising:
the connecting terminal is connected with the active equalization interface of the combined battery and is used for realizing the electric connection between the combined battery and the active equalization module;
a plurality of active balanced acquisition interfaces respectively connected with the connection terminals,
one end of each switch element is connected with each active equalization acquisition interface in a one-to-one correspondence mode, and the other end of each switch element is connected with an active equalization power supply;
and the active equalization power supply is used for supplying power to the active equalization acquisition interface so as to realize active equalization of the voltage of each battery module of the combined battery.
6. The active equalization module of claim 5 wherein the switching element is a field effect transistor.
7. The active equalization module of claim 6 wherein the switching element further comprises a diode connected in anti-parallel across the field effect transistor.
8. The active equalization module of claim 5 wherein the connection terminals and the active equalization interface of the assembled battery are mating male and female connectors.
9. A method of balancing a battery, comprising:
judging the discharge state of the battery through the collected voltage data;
switching an equalization mode according to the discharge state;
wherein the battery discharge state comprises: low-rate discharge and high-rate discharge;
the equalization modes include an active equalization mode and a passive equalization mode.
10. The method of claim 9, wherein switching equalization modes according to the discharge state comprises:
if the battery discharge state is low-rate discharge, starting a passive equalization mode;
and if the battery discharge state is high-rate discharge, starting an active equalization mode.
11. The method of claim 10,
initiating a passive equalization mode includes: controlling a passive equalization interface of the combined battery to be communicated with a passive equalization circuit;
initiating an active equalization mode includes: controlling an active equalization interface of the combined battery to be communicated with an active equalization module;
the passive equalization interface and the active equalization interface are arranged on a circuit board of the combined battery and are connected with each battery module through a voltage acquisition interface.
12. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 9 to 11.
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| CN201910900477.8A CN110601299A (en) | 2019-09-23 | 2019-09-23 | Battery capable of switching equalization mode, active equalization module and battery equalization method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130483A (en) * | 2011-03-24 | 2011-07-20 | 合肥工业大学 | Equalizing charging and discharging method for power type lithium-ion battery |
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| CN105375561A (en) * | 2015-10-31 | 2016-03-02 | 芜湖宏景电子股份有限公司 | Lithium battery active equalizing device |
| JP2016029867A (en) * | 2014-07-25 | 2016-03-03 | ゼネラル・エレクトリック・カンパニイ | Battery management system, and method |
| CN106655317A (en) * | 2016-09-27 | 2017-05-10 | 武汉纺织大学 | Compound active equalization circuit based on FPGA architecture |
| CN108539813A (en) * | 2018-04-17 | 2018-09-14 | 上海理工大学 | A kind of lithium-ion-power cell active equalization method |
| CN108667107A (en) * | 2018-07-17 | 2018-10-16 | 中天钢铁集团有限公司 | A kind of storage battery equalizing circuit and control method including auxiliary battery |
| CN209045699U (en) * | 2018-11-20 | 2019-06-28 | 华鼎国联动力电池有限公司 | Balanced externally charging typed electric car lithium-ion-power cell mould group |
| CN109995102A (en) * | 2019-03-01 | 2019-07-09 | 中国第一汽车股份有限公司 | A kind of equal balance system of Prospect of EVS Powered with Batteries and control method |
| CN210608594U (en) * | 2019-09-23 | 2020-05-22 | 珠海格力电器股份有限公司 | Battery and active equalization module |
-
2019
- 2019-09-23 CN CN201910900477.8A patent/CN110601299A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130483A (en) * | 2011-03-24 | 2011-07-20 | 合肥工业大学 | Equalizing charging and discharging method for power type lithium-ion battery |
| CN104135047A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Active and passive synergic hybrid equalization circuit of series storage battery pack, and equalization method |
| JP2016029867A (en) * | 2014-07-25 | 2016-03-03 | ゼネラル・エレクトリック・カンパニイ | Battery management system, and method |
| CN105375561A (en) * | 2015-10-31 | 2016-03-02 | 芜湖宏景电子股份有限公司 | Lithium battery active equalizing device |
| CN106655317A (en) * | 2016-09-27 | 2017-05-10 | 武汉纺织大学 | Compound active equalization circuit based on FPGA architecture |
| CN108539813A (en) * | 2018-04-17 | 2018-09-14 | 上海理工大学 | A kind of lithium-ion-power cell active equalization method |
| CN108667107A (en) * | 2018-07-17 | 2018-10-16 | 中天钢铁集团有限公司 | A kind of storage battery equalizing circuit and control method including auxiliary battery |
| CN209045699U (en) * | 2018-11-20 | 2019-06-28 | 华鼎国联动力电池有限公司 | Balanced externally charging typed electric car lithium-ion-power cell mould group |
| CN109995102A (en) * | 2019-03-01 | 2019-07-09 | 中国第一汽车股份有限公司 | A kind of equal balance system of Prospect of EVS Powered with Batteries and control method |
| CN210608594U (en) * | 2019-09-23 | 2020-05-22 | 珠海格力电器股份有限公司 | Battery and active equalization module |
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