CN117650597A - Electric quantity equalization system and method for mining storage battery - Google Patents
Electric quantity equalization system and method for mining storage battery Download PDFInfo
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- CN117650597A CN117650597A CN202311443055.5A CN202311443055A CN117650597A CN 117650597 A CN117650597 A CN 117650597A CN 202311443055 A CN202311443055 A CN 202311443055A CN 117650597 A CN117650597 A CN 117650597A
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- 238000005065 mining Methods 0.000 title claims abstract description 68
- 238000003860 storage Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 71
- 238000012216 screening Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 10
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- 239000003245 coal Substances 0.000 description 2
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- 230000003111 delayed effect Effects 0.000 description 1
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Abstract
The invention discloses a system and a method for balancing electric quantity of a mining storage battery, and relates to the field of electric quantity balancing of the mining storage battery; the equalization system includes: n equalization modules and n PTC discharge modules; determining any one of n equalization modules as a main control module; the n-1 equalization modules except the main control module are used for acquiring the open-circuit voltage of the corresponding single battery; the main control module is used for: and obtaining open circuit voltages of all the single batteries, calculating average voltages, screening the batteries to be discharged, calculating the discharge capacity, determining the discharge duration of any battery to be discharged according to the discharge capacity and the running power of the PTC discharge module connected with the battery to be discharged, controlling the PTC discharge module to be connected with the single batteries according to the discharge duration, realizing the discharge of the single batteries, and balancing the electric quantity of the mining storage battery. The invention can simplify the heat dissipation structure of the mining storage battery, and can facilitate heat dissipation when the electric quantity is balanced for discharging.
Description
Technical Field
The invention relates to the technical field of electric quantity equalization of a mining storage battery, in particular to an electric quantity equalization system and method of the mining storage battery.
Background
With the rapid development of mining equipment, the phenomenon that a storage battery is used for mobile equipment such as explosion-proof vehicles, robots and the like in a coal mine is also increasing. The storage battery for underground coal mine equipment is generally formed by connecting a plurality of single batteries in series and is fixed in an explosion-proof box body so as to meet the requirement on the explosion-proof performance of the battery. However, due to the influence of manufacturing process, materials, using conditions and the like, the consistency of the single batteries is different, so that the parameters such as the capacity, the internal resistance, the voltage and the like of different single batteries are different. In practice, it is necessary to balance the cells so that the capacity of each cell in the battery is substantially uniform.
Referring to fig. 1, currently, the electric quantity of the mining storage battery is balanced by adopting a resistor discharging mode, the resistor discharging mode needs to introduce the anode and the cathode of each single battery 1 into another explosion-proof box 5 (a dotted rectangle in fig. 1 indicates one explosion-proof box 5) different from the explosion-proof box 5 where the mining storage battery is located, when the single battery 2 to be adjusted is subjected to discharging balancing treatment, the corresponding balancing module 1 controls the relay 3 to be closed, the resistor 4 is connected to discharge, and part of energy of the single battery 2 with higher voltage is released, so that the voltage of the single battery is more consistent with the average voltage value of all the single batteries 2. However, the scheme has the problems of complex mechanical structure, complicated circuit, poor resistance heat dissipation performance and the like, and has poor effect in practical use.
Disclosure of Invention
The invention aims to provide a system and a method for equalizing electric quantity of a mining storage battery, which can simplify a heat dissipation structure and can enable the mining storage battery to dissipate heat more easily in the discharging process of equalizing electric quantity.
In order to achieve the above object, the present invention provides the following solutions:
the equalization system is used for equalizing the electric quantity of the mining storage battery; the mining storage battery comprises n single batteries which are sequentially connected in series, wherein n is more than 1;
the equalization system includes: n equalization modules and n PTC discharge modules; each single battery is connected with one equalization module in parallel; the n equalization modules are connected with each other; the PTC discharging module is arranged on the discharging loop of each single battery; each equalization module and each PTC discharge module are arranged in an explosion-proof box body of mining equipment;
determining any one of n equalization modules as a main control module; the n-1 equalization modules except the main control module are used for acquiring the open-circuit voltage of the corresponding single battery;
the main control module is used for:
obtaining the open-circuit voltage of the single battery connected with the main control module and the open-circuit voltage of the single battery collected by other n-1 equalization modules, and obtaining the open-circuit voltage of all the single batteries;
calculating average voltage according to the open circuit voltages of all the single batteries;
screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery with open-circuit voltage larger than the average voltage;
for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of a PTC discharge module connected with the battery to be discharged;
and controlling the corresponding PTC discharging module to be communicated with the corresponding single battery according to the discharging time length, so as to realize discharging of the corresponding single battery.
Optionally, the PTC discharge module comprises:
the PTC heating film is arranged on the discharge loop of the corresponding single battery;
and the heat conduction insulating gasket is fixed on the inner side of the explosion-proof box body and is used for setting the PTC heating film.
Optionally, the equalization system further comprises: n relays; one single battery is connected with one relay;
the positive electrode of the single battery is connected with one end of the corresponding relay; the other end of the relay is connected with one end of the corresponding PTC discharging module; the other end of the PTC discharging module is connected with the negative electrode of the single battery.
Further, the equalization system further comprises: n temperature protection devices; one temperature protection device is connected with the main control module, and n-1 temperature protection devices except the main control module are connected with one equalization module;
the temperature protection device is used for monitoring temperature data of the corresponding PTC discharge module in real time; the n-1 equalization modules are also used for collecting temperature data monitored by the corresponding temperature protection devices;
the main control module is also used for:
acquiring temperature data monitored by a corresponding temperature protection device and temperature data acquired by n-1 equalization modules;
if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with and disconnected from the corresponding single battery through the corresponding relay, and the corresponding single battery stops discharging, so that overheat protection is realized.
Further, the equalization system further comprises: n insurance modules; one of the relays is connected with one of the safety modules; the positive pole of the single battery is connected with one end of the corresponding relay through the corresponding safety module.
Still further, each relay, each temperature protection device and each safety module are all disposed within an explosion-proof housing of the mining equipment.
Optionally, in calculating the discharge amount of the battery to be discharged, the main control module is specifically configured to:
calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage;
and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
In order to achieve the above object, the present invention also provides the following scheme
A mining storage battery power equalization method, comprising:
obtaining the open circuit voltage of each single battery to obtain the open circuit voltage of all the single batteries;
calculating average voltage according to the open circuit voltages of all the single batteries;
screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery with open-circuit voltage larger than the average voltage;
for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of a PTC discharge module connected with the battery to be discharged;
and controlling the corresponding PTC discharging module to be communicated with the corresponding single battery according to the discharging time length, so as to realize discharging of the corresponding single battery.
Optionally, calculating the discharge amount of the battery to be discharged specifically includes:
calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage;
and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
Optionally, the method for equalizing the electric quantity of the mining storage battery further comprises the steps of when the corresponding PTC discharging module is controlled to be connected with the corresponding single battery according to the discharging duration to realize discharging of the corresponding single battery:
acquiring temperature data of each PTC discharge module;
if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with and disconnected from the corresponding single battery through the relay, and the corresponding single battery stops discharging, so that overheat protection is realized.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a mining storage battery electric quantity balancing system and a mining storage battery electric quantity balancing method, wherein when the voltage of a single battery in a mining storage battery is larger than the average voltage determined according to the voltage of each single battery, the balancing system screens the battery to be discharged through a main control module, calculates the discharge quantity of the battery to be discharged, determines the discharge duration according to the running power of a PTC discharge module, controls the corresponding PTC discharge module to be communicated with the corresponding single battery according to the discharge duration, and realizes the discharge of the corresponding single battery so as to realize the mining storage battery electric quantity balancing. Compared with the existing resistance discharging mode adopted by the electric quantity balancing of the mining storage battery, the PTC discharging module which is positioned in the same explosion-proof box body with the mining storage battery balances the electric quantity of each single battery of the mining storage battery, so that the number of the explosion-proof box bodies is reduced, the heat dissipation structure of the mining storage battery is simpler, the PTC discharging module generates heat uniformly when being electrified, and the heat dissipation is easier when the mining storage battery balances the electric quantity to discharge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a discharge connection of an electric quantity balancing resistor of a mining storage battery;
fig. 2 is a schematic connection diagram of a mining storage battery electric quantity balancing system disclosed in an embodiment of the invention;
fig. 3 is a schematic flow chart of a method for equalizing electric quantity of a mining storage battery according to an embodiment of the invention;
fig. 4 is a schematic flow chart of a mining storage battery electric quantity balancing system disclosed by the embodiment of the invention.
Symbol description:
the device comprises an equalization module (1), a single battery (2), a relay (3), a resistor (4), an explosion-proof box (5), a PTC heating film (6), a heat conducting insulating gasket (7), a temperature protection device (8) and a safety module (9).
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a mining storage battery electric quantity balancing system and method, which can facilitate heat dissipation of the mining storage battery during balanced electric quantity discharging by simplifying a heat dissipation structure of the mining storage battery.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 2, the invention discloses a mining storage battery electric quantity balancing system, which is used for balancing the electric quantity of a mining storage battery; the mining storage battery comprises n single batteries 2 which are sequentially connected in series, wherein n is more than 1.
The equalization system includes: n equalization modules 1 and n PTC (Positive Temperature Coefficient, positive temperature coefficient thermistor) discharge modules; each single battery 2 is connected in parallel with one equalization module 1; the n equalization modules 1 are connected with each other; the PTC discharging module is arranged on the discharging loop of each single battery 2; each equalization module 1 and each PTC discharge module are disposed in an explosion-proof box 5 of the mining equipment.
Determining any one equalization module 1 of the n equalization modules 1 as a main control module; the n-1 equalization modules 1 except the main control module are used for acquiring the open circuit voltage of the corresponding single battery 2.
The main control module is used for:
and obtaining the open-circuit voltage of the single battery 2 connected with the main control module and the open-circuit voltages of the single batteries 2 collected by the other n-1 equalization modules 1 to obtain the open-circuit voltages of all the single batteries 2.
The average voltage is calculated from the open circuit voltages of all the unit cells 2.
Screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery 2 with an open circuit voltage greater than the average voltage.
And for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of the PTC discharge module connected with the battery to be discharged.
And controlling the corresponding PTC discharging module to be communicated with the corresponding single battery 2 according to the discharging time length, so as to realize the discharging of the corresponding single battery 2.
In the aspect of calculating the discharge amount of the battery to be discharged, the main control module is specifically configured to: calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage; and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
Specifically, when the mining storage battery is in an idle state, each equalization module 1 collects the voltage of the corresponding single battery 2 and transmits data to a certain selected equalization module 1 (i.e., a main control module), so as to calculate the average voltage of all the single batteries 2. When the voltage of a certain single battery 2 is higher than the average voltage threshold, the equalization module 1 controls the discharge loop of the corresponding single battery 2 to perform discharge management.
When the discharging time of the corresponding single battery 2 reaches the discharging time length, the main control module and the n-1 other equalizing modules 1 measure the open circuit voltage of the single battery 2 again, and whether the discharging is finished is verified, if the open circuit voltage of the single battery 2 is equal to the average voltage or is stabilized within the average voltage range, the discharging is finished, and if the discharging is not finished, the discharging process is repeated. If the open-circuit voltage of the single battery 2 is required to be stabilized within the average voltage range, the main control module obtains a set error range, for example, the average voltage is ±1%, and the ratio of the difference value between the open-circuit voltage and the average voltage of the single battery 2 to the average voltage is less than or equal to 1% of the average voltage, so that the corresponding single battery 2 can be determined to be discharged.
In addition, in the equalization module 1 in the embodiment of the invention, the discharge loop of the corresponding single battery 2 can be actively opened under the low-temperature environment, and the duration of the mining storage battery is prolonged by increasing the temperature of the area of the explosion-proof box 5 where each single battery 2 is positioned. Referring to fig. 2, the explosion-proof housing 5 (dotted line portion in fig. 2) may be in a form of a potting or non-potting, making the system more flexible to use.
In order to meet the heat dissipation requirement of the mining storage battery, in the embodiment of the disclosure, the PTC discharging module comprises: a PTC heating film 6 and a heat conductive insulating spacer 7.
The PTC heating films 6 are disposed on the discharge circuits of the respective unit batteries 2.
The heat conduction insulating gasket 7 is fixed on the inner side of the explosion-proof box body 5; the heat conductive insulating spacer 7 is used for disposing the PTC heating film 6.
Since the heat-conducting insulating pad 7 is required to meet the heat dissipation requirement of the PTC heating film 6 when the corresponding unit cell 2 is discharged, the heat-conducting insulating pad 7 needs to have good heat-conducting property. In addition, during normal operation of the mining storage battery, current may be generated in the working circuit, so that in order to avoid the influence of the current on the PTC heating film 6 and prevent the fault of the discharging circuit of the single battery 2, the heat-conducting insulating spacer 7 needs to have good insulating performance, and can resist current impact to a certain extent. Based on the above requirements on the heat conducting property and the insulating property of the heat conducting insulating gasket 7, production personnel can select the corresponding heat conducting insulating gasket 7 according to different specifications of the mining storage battery.
The application of the mine storage battery electric quantity balancing system is mainly mine equipment, the mine environment is bad, if the balancing system manually balances the electric quantity, certain inconvenience exists, and the progress of engineering can be delayed. Therefore, in order to improve the automation degree of the equalization system and meet the requirement of automatic electric quantity equalization of the mining storage battery, the equalization system disclosed by the embodiment of the invention further comprises: n relays 3; one of the single batteries 2 is connected to one of the relays 3.
The positive electrode of the single battery 2 is connected with one end of the corresponding relay 3; the other end of the relay 3 is connected with one end of the corresponding PTC discharging module; the other end of the PTC discharging module is connected with the negative electrode of the single battery 2, and then the single battery 2, the relay 3 and the PTC discharging module form a complete loop.
Due to the current heating effect, the mining storage battery has a certain potential safety hazard in the discharging process. In order to improve the safety of the equalization system, the embodiment of the invention further comprises n temperature protection devices 8. One temperature protection device 8 is connected with the main control module, and other n-1 temperature protection devices 8 except the main control module are connected with one equalization module 1.
The temperature protection device is used for monitoring temperature data of the corresponding PTC discharge module in real time; the n-1 equalization modules are also used for collecting temperature data monitored by the corresponding temperature protection devices 8.
The main control module is also used for: acquiring temperature data monitored by a corresponding temperature protection device 8 and temperature data acquired by n-1 equalization modules 1; if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with or disconnected from the corresponding single battery 2 through the corresponding relay 3, and the corresponding single battery 2 stops discharging, so that overheat protection is realized.
Referring to fig. 2, the equalization system further includes: n safety dies 9; one of the relays 3 is connected to one of the safety modules 9; the positive pole of the single battery 2 is connected with one end of the corresponding relay 3 through the corresponding safety module 9.
Each relay 3, each temperature protection device 8 and each safety module 9 are arranged in an explosion-proof box body of the mining equipment.
Referring to fig. 3, the embodiment of the invention also discloses a method for equalizing the electric quantity of the mining storage battery, which comprises the following steps:
s1: and obtaining the open-circuit voltage of each single battery to obtain the open-circuit voltage of all the single batteries.
S2: the average voltage is calculated from the open circuit voltages of all the unit cells.
S3: screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery with open-circuit voltage larger than the average voltage.
S4: and for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of the PTC discharge module connected with the battery to be discharged.
S5: and controlling the corresponding PTC discharging module to be communicated with the corresponding single battery according to the discharging time length, so as to realize discharging of the corresponding single battery.
Wherein, the calculating the discharge amount of the battery to be discharged in S3 specifically includes:
s31: and calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage.
S32: and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
The method for equalizing the electric quantity of the mining storage battery comprises the following steps of controlling the corresponding PTC discharging module to be connected with the corresponding single battery according to the discharging duration, and realizing discharging of the corresponding single battery:
s6: and acquiring temperature data of each PTC discharge module.
S7: if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with and disconnected from the corresponding single battery through the relay, and the corresponding single battery stops discharging, so that overheat protection is realized.
Referring to fig. 4, a flow of a mining battery power balancing system is described in conjunction with a mining battery power balancing method disclosed in an embodiment of the present invention: in an idle state, each equalization module 1 respectively collects the open-circuit voltage of each single battery 2; the equalization module 1 which is determined as the main control module calculates the average voltage of each single battery 2 in the mining storage battery, screens out single batteries (namely batteries to be discharged) which are higher than the normal average voltage range, and performs discharge management.
Calculating the discharge time length of a single battery to be discharged according to the discharge quantity and the power of the PTC heating film, and switching on a PTC heating film passage to discharge the single battery; and correspondingly, after the single battery discharges to meet the discharge duration, the equalization module 1 connected with the single battery measures the open-circuit voltage of the single battery 2 again, and verifies whether the discharging is finished or not, if the open-circuit voltage of the single battery 1 is stabilized within the average voltage range, the discharging is finished, and if the discharging is not finished, the discharging process is repeated.
By the above embodiment, compared with the conventional equalizing manner using the resistance discharge, the present invention can be determined to have the following effects: 1) The design of the explosion-proof box body is simplified, and an independent explosion-proof box body is not required to be specially designed for placing the discharge resistor; 2) Wiring among different box bodies is reduced, an equalization circuit of the mining storage battery is simplified, and explosion-proof feasibility is further improved; 3) Under the low-temperature environment, the PTC heating film can raise the temperature of the battery to a certain extent, and the low-temperature performance of the battery is improved.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the method disclosed in the embodiment, since it corresponds to the system disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the system of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. The electric quantity balancing system of the mining storage battery is characterized by being used for balancing the electric quantity of the mining storage battery; the mining storage battery comprises n single batteries which are sequentially connected in series, wherein n is more than 1;
the equalization system includes: n equalization modules and n PTC discharge modules; each single battery is connected with one equalization module in parallel; the n equalization modules are connected with each other; the PTC discharging module is arranged on the discharging loop of each single battery; each equalization module and each PTC discharge module are arranged in an explosion-proof box body of mining equipment;
determining any one of n equalization modules as a main control module; the n-1 equalization modules except the main control module are used for acquiring the open-circuit voltage of the corresponding single battery;
the main control module is used for:
obtaining the open-circuit voltage of the single battery connected with the main control module and the open-circuit voltage of the single battery collected by other n-1 equalization modules, and obtaining the open-circuit voltage of all the single batteries;
calculating average voltage according to the open circuit voltages of all the single batteries;
screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery with open-circuit voltage larger than the average voltage;
for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of a PTC discharge module connected with the battery to be discharged;
and controlling the corresponding PTC discharging module to be communicated with the corresponding single battery according to the discharging time length, so as to realize discharging of the corresponding single battery.
2. The mining battery charge equalization system of claim 1, wherein said PTC discharge module comprises:
the PTC heating film is arranged on the discharge loop of the corresponding single battery;
and the heat conduction insulating gasket is fixed on the inner side of the explosion-proof box body and is used for setting the PTC heating film.
3. The mining battery charge equalization system of claim 1, wherein the equalization system further comprises: n relays; one single battery is connected with one relay;
the positive electrode of the single battery is connected with one end of the corresponding relay; the other end of the relay is connected with one end of the corresponding PTC discharging module; the other end of the PTC discharging module is connected with the negative electrode of the single battery.
4. The mining battery charge equalization system of claim 3, wherein said equalization system further comprises: n temperature protection devices; one temperature protection device is connected with the main control module, and n-1 other temperature protection devices except the main control module are connected with one equalization module;
the temperature protection device is used for monitoring temperature data of the corresponding PTC discharge module in real time; the n-1 equalization modules are also used for collecting temperature data monitored by the corresponding temperature protection devices;
the main control module is also used for:
acquiring temperature data monitored by a corresponding temperature protection device and temperature data acquired by n-1 equalization modules;
if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with and disconnected from the corresponding single battery through the corresponding relay, and the corresponding single battery stops discharging, so that overheat protection is realized.
5. The mining battery charge equalization system of claim 4, wherein the equalization system further comprises: n insurance modules; one of the relays is connected with one of the safety modules; the positive pole of the single battery is connected with one end of the corresponding relay through the corresponding safety module.
6. The mining battery charge equalization system of claim 5, wherein each of said relays, each of said temperature protection devices, and each of said safety modules are disposed within an explosion-proof enclosure of a mining device.
7. The mining battery power equalization system of claim 1, wherein in calculating the discharge of the battery to be discharged, the master control module is specifically configured to:
calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage;
and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
8. The mining storage battery electric quantity balancing method is characterized by comprising the following steps of:
obtaining the open circuit voltage of each single battery to obtain the open circuit voltage of all the single batteries;
calculating average voltage according to the open circuit voltages of all the single batteries;
screening a battery to be discharged, and calculating the discharge quantity of the battery to be discharged; the battery to be discharged is a single battery with open-circuit voltage larger than the average voltage;
for any battery to be discharged, determining the discharge duration of the battery to be discharged according to the discharge capacity and the running power of a PTC discharge module connected with the battery to be discharged;
and controlling the corresponding PTC discharging module to be communicated with the corresponding single battery according to the discharging time length, so as to realize discharging of the corresponding single battery.
9. The mining storage battery electric quantity balancing method according to claim 8, wherein calculating the discharge quantity of the battery to be discharged specifically comprises:
calculating the voltage difference between the open circuit voltage of the battery to be discharged and the average voltage;
and estimating the discharge capacity of the battery to be discharged according to the voltage difference and the output power of the battery to be discharged.
10. The mining battery charge equalization method according to claim 8, wherein the mining battery charge equalization method further comprises, while controlling the connection of the respective PTC discharge modules to the respective cells according to the discharge time periods, achieving the discharge of the respective cells:
acquiring temperature data of each PTC discharge module;
if the temperature data is larger than the set threshold value, the corresponding PTC discharging module is controlled to be connected with and disconnected from the corresponding single battery through the relay, and the corresponding single battery stops discharging, so that overheat protection is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311443055.5A CN117650597A (en) | 2023-11-02 | 2023-11-02 | Electric quantity equalization system and method for mining storage battery |
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| CN202311443055.5A CN117650597A (en) | 2023-11-02 | 2023-11-02 | Electric quantity equalization system and method for mining storage battery |
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| CN117650597A true CN117650597A (en) | 2024-03-05 |
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| CN202311443055.5A Pending CN117650597A (en) | 2023-11-02 | 2023-11-02 | Electric quantity equalization system and method for mining storage battery |
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