CN211045647U - Battery double-protection system - Google Patents
Battery double-protection system Download PDFInfo
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- CN211045647U CN211045647U CN202020033908.3U CN202020033908U CN211045647U CN 211045647 U CN211045647 U CN 211045647U CN 202020033908 U CN202020033908 U CN 202020033908U CN 211045647 U CN211045647 U CN 211045647U
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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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Abstract
The utility model discloses a two protection system of battery, including battery string module, master switch unit, stand-by switch unit, acquisition unit, computational unit, the control unit, stand-by switch unit connects at the anodal port of battery string module for the switch-on or disconnection the charge circuit or the discharge circuit of battery string module, the control unit respectively with the master switch unit with stand-by switch unit connects, the control unit be used for the basis the computational result of computational unit produces corresponding control command and control the master switch unit disconnection or stand-by switch unit disconnection. The utility model discloses charge the return circuit and increased the secondary protection system with the return circuit that discharges, the stand-by switch unit in the secondary system can control the off-state in charge return circuit or the return circuit that discharges fast to can realize the quick protection to battery string module when one-level circuit protection is unusual or inefficacy, improved the safety in utilization of battery string module.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a two protection system of battery.
Background
With the popularization of intelligent devices and electronic products, batteries become important components of the products, but certain requirements exist when the batteries are used, and the batteries cannot be overcharged or overdischarged, otherwise irreversible damage can be caused to the batteries. At present, the existing battery protection systems are mainly divided into a same-port protection system and a different-port protection system, the same-port protection system is controlled by the same switch in a charging loop and a discharging loop, the different-port protection system is controlled by one switch in a charging circuit and a discharging circuit, but the two systems are only provided with one-level protection systems, so that the two existing battery protection systems have prevention and control risks in practical application, and if a module of the one-level protection system fails, the protection systems cannot realize the function of protecting the battery.
Based on the above current situation, it is necessary to optimize the existing battery protection system.
Disclosure of Invention
The utility model discloses there are defects such as prevention and control risk to the one-level protection system that exists among the prior art in practical application, provide a new two protection system of battery.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a battery dual-protection system comprises a battery string module, a main control switch unit, a standby switch unit, an acquisition unit, a calculation unit and a control unit, wherein the main control switch unit is connected to a negative port of the battery string module and used for switching on or switching off a charging loop or a discharging loop of the battery string module; the acquisition unit is connected in a power supply loop of the battery string module and is used for acquiring information at two ends of the battery string module and sending the information to the calculation unit for calculation; the computing unit is connected with the control unit and sends a computing result to the control unit; the control unit is respectively connected with the main control switch unit and the standby switch unit, and the control unit is used for generating a corresponding control instruction according to the calculation result of the calculation unit and controlling the main control switch unit to be disconnected or the standby switch unit to be disconnected.
In foretell two protection system of battery, master switch unit, acquisition unit, computational unit and the control unit has constituted the utility model discloses a one-level battery protection system, wherein acquisition unit can real time monitoring battery cluster module's charge-discharge state to can quick output signal give the computational unit, play comprehensive monitoring effect. The computing unit plays a role in data operation and comparison, and the control unit plays a role in sending a control instruction and controlling the main control switch unit and the standby switch unit. Under the condition that the battery string module is overcharged or overdischarged, the main control switch unit can quickly disconnect the charging and discharging circuit after receiving a control command, and a primary protection function is realized.
Compared with the battery protection system in the prior art, the utility model discloses charge the return circuit and increased the secondary protection system with the return circuit that discharges, the stand-by switch unit among the secondary system can control the off-state in charge return circuit or the return circuit that discharges fast to can realize the quick protection to battery string module when one-level circuit protection is unusual or inefficacy, improve the safety in utilization of battery string module.
Preferably, in the above battery dual-protection system, the collecting unit includes a voltage collecting group, a current collecting group, and a temperature collecting group, and the voltage collecting group is configured to collect a voltage value V at two ends of the battery string module and send the voltage value V to the calculating unit; the current collection group is used for collecting current values i at two ends of the battery string module and sending the current values i to the calculation unit; the temperature acquisition group is used for acquiring temperature values T at two ends of the battery string module and sending the temperature values T to the calculation unit.
The utility model discloses a thereby voltage, electric current, the temperature real time monitoring to battery cluster module both ends produce corresponding signal, form comprehensive battery protection system, avoid battery cluster module overcharge and put and cause irreversible damage, prolong the life and the availability factor of battery cluster module.
Preferably, in the above dual battery protection system, the computing unit sets an overcharge protection voltage V1 and an overdischarge protection voltage V2, and the control unit controls the main control switch unit to be turned off when the voltage value V > the overcharge protection voltage V1 or the voltage value V > the overdischarge protection voltage V2.
The calculating unit can calculate and compare the real-time voltage value V of the circuit with the overcharge protection voltage V1 and the overdischarge protection voltage V2, so that the control unit can accurately send out a control command.
Preferably, in the above dual battery protection system, the computing unit sets an overcurrent i1, and the control unit controls the main switch unit to turn off when the current value i > the overcurrent i 1.
The calculating unit can compare the real-time current value i of the circuit with the overload current i1, so that the control unit accurately sends out the control command.
Preferably, in the above dual battery protection system, the calculation unit sets an overcharge protection temperature value T1 and an overdischarge protection temperature value T2, and when the temperature value T > the overcharge protection temperature value T1 or the temperature value T > the overdischarge protection temperature value T2, the control unit controls the main control switch unit to be turned off.
The calculating unit can calculate and compare the real-time temperature value T at the two ends of the battery string module with the overcharge protection temperature value T1 and the overdischarge protection temperature value T2, so that the control unit can accurately send out a control instruction.
Preferably, the above-mentioned dual battery protection system further includes a monitoring unit, the monitoring unit is respectively connected to the control unit and the master switch unit, and the monitoring unit is configured to monitor a state of the master switch unit and feed back the state of the master switch unit to the control unit.
The monitoring unit is connected with the control unit, can play a better monitoring role, and can monitor the execution result of the main control switch list after the control unit sends out a control instruction.
Preferably, in the above dual battery protection system, the monitoring unit is configured to monitor a state of the main control switch unit, and when the state of the main control switch unit is inconsistent with a control instruction of the control unit, the control unit controls the standby switch unit to be turned off.
The utility model discloses a monitoring unit plays the effect of control master switch unit among the second grade protection system, also can monitor one-level protection system's execution state. The monitoring unit starts the secondary protection system in the abnormal or failure state of the primary protection system, so that the double protection effect is achieved, and the use safety of the battery string module is improved.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a circuit diagram of the present invention;
fig. 3 is a working principle diagram of the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying figures 1-3 and the detailed description, but they are not intended to limit the invention:
example 1
A battery double-protection system comprises a battery string module 1 and a main control switch unit 2, wherein the main control switch unit 2 is connected to a negative port of the battery string module 1, the main control switch unit 2 is used for connecting or disconnecting a charging circuit or a discharging circuit of the battery string module 1, the battery double-protection system also comprises a standby switch unit 5, an acquisition unit 7, a calculation unit 6 and a control unit 4, the standby switch unit 5 is connected to a positive port of the battery string module 1 and is used for connecting or disconnecting the charging circuit or the discharging circuit of the battery string module 1; the acquisition unit 7 is connected in a power supply loop of the battery string module 1, and the acquisition unit 7 is used for acquiring information at two ends of the battery string module 1 and sending the information to the calculation unit 6 for calculation; the calculation unit 6 is connected with the control unit 4 and sends a calculation result to the control unit 4; the control unit 4 is respectively connected with the main control switch unit 2 and the standby switch unit 5, and the control unit 4 is used for generating a corresponding control instruction according to the calculation result of the calculation unit 6 and controlling the main control switch unit 2 to be disconnected or the standby switch unit 5 to be disconnected.
As shown in fig. 1 to fig. 3, in the charging or discharging state, the primary protection system is turned on, and the acquisition unit 7 acquires data at two ends of the battery string module 1 and transmits the data to the calculation unit 6 through a line. The calculation unit 6 compares the collected real-time data with the preset protection value, once the calculation unit 6 obtains the abnormal data calculation result, the control unit 4 sends a control instruction and directly controls the main control switch unit 2 to be switched off, and therefore the charging or discharging loop is cut off. When the control unit 4 sends a control instruction and the main control switch unit 2 has execution abnormality, the secondary protection system is started, the control unit 4 sends a control instruction to the standby switch unit 5, and finally the charging loop is cut off, so that the double protection effect is achieved, and the use safety of the battery string module 1 in a charging or discharging state is improved.
Preferably, the collecting unit 7 includes a voltage collecting group 71, a current collecting group 72, and a temperature collecting group 73, and the voltage collecting group 71 is configured to collect a voltage value V at two ends of the battery string module 1 and send the voltage value V to the calculating unit 6; the current collection group 72 is used for collecting current values i at two ends of the battery string module 1 and sending the current values i to the calculation unit 6; the temperature collection group 73 is used for collecting temperature values T at two ends of the battery string module 1 and sending the temperature values T to the calculation unit 6.
Preferably, the calculation unit 6 sets an overcharge protection voltage V1 and an overdischarge protection voltage V2, and the control unit 4 controls the main switch unit 2 to be turned off when the voltage value V > the overcharge protection voltage V1 or the voltage value V > the overdischarge protection voltage V2.
Preferably, the calculation unit 6 sets an overcurrent i1, and the control unit 4 controls the main control switch unit 2 to be turned off when the current value i > the overcurrent i 1.
Preferably, the calculation unit 6 sets an overcharge protection temperature value T1 and an overdischarge protection temperature value T2, and when the temperature value T > the overcharge protection temperature value T1 or the temperature value T > the overdischarge protection temperature value T2, the control unit 4 controls the main control switch unit 2 to be turned off.
Preferably, the monitoring device further comprises a monitoring unit 3, the monitoring unit 3 is respectively connected with the control unit 4 and the main control switch unit 2, and the monitoring unit 3 is used for monitoring the state of the main control switch unit 2 and feeding back the state of the main control switch unit 2 to the control unit 4.
Preferably, the monitoring unit 3 is configured to monitor a state of the main control switch unit 2, and when the state of the main control switch unit 2 is inconsistent with a control instruction of the control unit 4, the control unit 4 controls the standby switch unit 5 to be turned off.
Specifically, as shown in fig. 1, 2, and 3, in a charging state, the acquisition unit 7 of the primary protection system acquires a voltage value V, a current value i, and a temperature value T at two ends of the battery string module 1, the calculation unit 6 performs operation comparison on acquired real-time data with an overcharge protection voltage V1, an overload current i1, and an overcharge protection temperature value T1 that are set in advance, and once the calculation unit 6 obtains an operation result of data abnormality, the control unit 4 sends a control instruction, and the main control switch unit 2 executes the instruction to cut off the charging loop. When the monitoring unit 3 monitors that the main control switch unit 2 has execution abnormality, the secondary protection system is started, the monitoring unit 3 sends an execution abnormality signal to the control unit 4, then the control unit 4 sends a control instruction to the standby switch unit 5, and finally the standby switch unit 5 cuts off the charging loop.
In a discharging state, the acquisition unit 7 of the primary protection system acquires a voltage value V, a current value i and a temperature value T at two ends of the battery string module 1 and transmits the voltage value V, the current value i and the temperature value T to the calculation unit 6 through a circuit, the calculation unit 6 performs operation comparison on acquired real-time data and a preset over-discharge protection voltage V2, an overload current i1 and an over-discharge protection temperature value T2, once the calculation unit 6 obtains that the real-time data exceeds an initial set value, the calculation unit 6 sends an operation result of data abnormity to the control unit 4, then the control unit 4 sends a control instruction to the main control switch unit 2, and the main control switch unit 2 cuts off a discharging loop. When the main control switch unit 2 does not execute the control command, the monitoring unit 3 monitors that the main control switch unit 2 is abnormal in execution, the secondary protection system is started, the monitoring unit 3 sends an execution abnormal signal to the control unit 4, then the control unit 4 sends the control command to the standby switch unit 5, and finally the standby switch unit 5 cuts off a discharge loop.
The utility model discloses a second grade protection system can monitor the execution state of one-level protection system to start second grade protection system under the state that one-level protection system is unusual or became invalid, thereby play the effect of two protections, improved the safety in utilization of battery string module.
In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a two protection system of battery, includes battery cluster module (1), main control switch unit (2), the negative pole port at battery cluster module (1) is connected in main control switch unit (2), main control switch unit (2) are used for the switch-on or disconnection the charge circuit or the return circuit that discharges of battery cluster module (1), its characterized in that: the battery charging system is characterized by further comprising a standby switch unit (5), an acquisition unit (7), a calculation unit (6) and a control unit (4), wherein the standby switch unit (5) is connected to the positive electrode port of the battery string module (1) and used for switching on or off a charging loop or a discharging loop of the battery string module (1); the acquisition unit (7) is connected in a power supply loop of the battery string module (1), and the acquisition unit (7) is used for acquiring information at two ends of the battery string module (1) and sending the information to the calculation unit (6) for calculation; the computing unit (6) is connected with the control unit (4) and sends a computing result to the control unit (4); the control unit (4) is respectively connected with the main control switch unit (2) and the standby switch unit (5), and the control unit (4) is used for generating corresponding control instructions according to the calculation results of the calculation unit (6) and controlling the main control switch unit (2) to be disconnected or the standby switch unit (5) to be disconnected.
2. The dual battery protection system of claim 1, wherein: the acquisition unit (7) comprises a voltage acquisition group (71), a current acquisition group (72) and a temperature acquisition group (73), wherein the voltage acquisition group (71) is used for acquiring voltage values V at two ends of the battery string module (1) and sending the voltage values V to the calculation unit (6); the current collection group (72) is used for collecting current values i at two ends of the battery string module (1) and sending the current values i to the calculation unit (6); the temperature acquisition group (73) is used for acquiring temperature values T at two ends of the battery string module (1) and sending the temperature values T to the calculation unit (6).
3. The dual battery protection system of claim 2, wherein: the calculation unit (6) sets an overcharge protection voltage V1 and an overdischarge protection voltage V2, and when the voltage value V > the overcharge protection voltage V1 or the voltage value V > the overdischarge protection voltage V2, the control unit (4) controls the main control switch unit (2) to be switched off.
4. The dual battery protection system of claim 2, wherein: the calculation unit (6) sets an overload current i1, and the control unit (4) controls the main control switch unit (2) to be turned off when the current value i > the overload current i 1.
5. The dual battery protection system of claim 2, wherein: the calculation unit (6) is set with an overcharge protection temperature value T1 and an overdischarge protection temperature value T2, and when the temperature value T is greater than the overcharge protection temperature value T1 or the temperature value T is greater than the overdischarge protection temperature value T2, the control unit (4) controls the main control switch unit (2) to be disconnected.
6. The dual battery protection system of claim 1, wherein: still include monitoring unit (3), monitoring unit (3) respectively with control unit (4) with master switch unit (2) are connected, monitoring unit (3) are used for the control master switch unit (2) state and will master switch unit (2) state feeds back to control unit (4).
7. The dual battery protection system of claim 6, wherein: the monitoring unit (3) is used for monitoring the state of the main control switch unit (2), and when the state of the main control switch unit (2) is inconsistent with the control instruction of the control unit (4), the control unit (4) controls the standby switch unit (5) to be disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033908.3U CN211045647U (en) | 2020-01-08 | 2020-01-08 | Battery double-protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033908.3U CN211045647U (en) | 2020-01-08 | 2020-01-08 | Battery double-protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211045647U true CN211045647U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020033908.3U Active CN211045647U (en) | 2020-01-08 | 2020-01-08 | Battery double-protection system |
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|---|---|
| CN (1) | CN211045647U (en) |
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2020
- 2020-01-08 CN CN202020033908.3U patent/CN211045647U/en active Active
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