CN209929390U - Parallel pre-connection device for storage batteries - Google Patents
Parallel pre-connection device for storage batteries Download PDFInfo
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- CN209929390U CN209929390U CN201920394654.5U CN201920394654U CN209929390U CN 209929390 U CN209929390 U CN 209929390U CN 201920394654 U CN201920394654 U CN 201920394654U CN 209929390 U CN209929390 U CN 209929390U
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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
Abstract
The utility model discloses a parallelly connected device that connects in advance of battery can solve the great technical problem of current battery parallel method safety risk and to the life influence of battery great. The display control module comprises an auxiliary power supply module, a display control module, a first direct current contactor K1, a second direct current contactor K2, a first current limiting resistor R1, a first current sensor T1, a first diode V1, a second diode V2, a first switch K3, a first terminal B1+, a second terminal B2+ and a third terminal B1-. The utility model discloses a parallelly connected device that connects in advance of battery can solve the not enough of the parallelly connected method of current battery, realizes that the safe and reliable of battery is parallelly connected, prolongs the life of battery.
Description
Technical Field
The utility model relates to a power supply unit technical field, concretely relates to parallelly connected device that connects in advance of battery.
Background
The storage battery is used as an ideal energy storage and power supply device and is widely applied in various industries. In the use process of the storage battery, the problems of installation space limitation, insufficient discharge capacity of the storage battery and the like often exist, in this case, the parallel connection of the storage batteries is often adopted for solving, and the problem of how to perform the parallel connection of the storage batteries must be solved for realizing the solution. At present, the parallel connection of the storage batteries is generally carried out in a manual forced parallel connection mode, namely, the positive electrodes or the negative electrodes of the two storage batteries to be connected in parallel are firstly connected, and then forced connection is carried out in a direct touch mode or a switch short circuit mode. The parallel connection mode of the storage batteries is quick, but the defects are obvious.
As described above, the sampling forced parallel connection mode realizes the parallel connection of the storage batteries, which is fast but has obvious defects, and mainly reflects that the voltage difference of the parallel connection front ends of the storage batteries is possibly large, if the forced parallel connection mode is adopted, the voltage difference between the terminal voltages of the storage batteries can generate large current on the parallel connection lines of the storage batteries, and simultaneously sparks are generated at connection points, so that the safety of human bodies and equipment is seriously influenced, and the service life of the storage batteries is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a parallelly connected device that connects in advance of battery can solve the great technical problem of current battery parallel method safety risk and to the life influence of battery great.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a parallel pre-connection device for storage batteries comprises an auxiliary power supply module and a display control module;
the display control circuit also comprises a first terminal B1+ and a second terminal B2+ connected with two ends of a main contact of a second direct current contactor K2, a first current limiting resistor R1 and a main contact of a first direct current contactor K1 are connected in series and then are connected with a first terminal B1+ and a second terminal B2+, the first current limiting resistor R1 passes through a first current sensor T1, one end of a coil of the first direct current contactor K1 and the second direct current contactor K2 is connected with an auxiliary power module, the other end of the coil is connected with a display control module, a power supply end of the first current sensor T1 is connected with an auxiliary power module, a sampling end of the first current sensor T1 is connected with the display control module, an anode of the first diode V1 is connected with the first terminal B1+ and the display control module, an anode of the second diode V2 is connected with the second terminal B2+ and the display control module, cathodes of the first diode V1 and the second diode V2 are connected with the auxiliary power module, one end of the first switch K3 is connected with the auxiliary power supply module and the display control module, and the other end is connected with the third terminal B1-.
Furthermore, the display control module comprises a control unit, a sampling circuit, a control circuit, a display circuit and an auxiliary power supply;
wherein, the control unit is used for centralized control;
the sampling circuit is used for sampling the terminal voltage and the parallel current of the storage battery;
the control circuit is used for controlling the first direct current contactor K1 and the second direct current contactor K2;
the display circuit is used for displaying state information in the parallel connection process of the storage batteries;
the auxiliary power supply is used for supplying power to the control unit, the sampling circuit, the control circuit and the display circuit.
According to the above technical scheme, the utility model discloses a parallelly connected device of connecing in advance of battery can solve the not enough of the parallelly connected method of current battery, realizes that the safe and reliable of battery is parallelly connected, prolongs the life of battery.
Drawings
Fig. 1 is a schematic diagram of the present invention after the batteries B1 and B2 are connected in parallel;
fig. 2 is a schematic block diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Fig. 1 is a schematic diagram of battery B1 and battery B2 after they are connected in parallel, where positive and negative interconnection lines are used for connection between the positive poles of battery B1 and battery B2 and between the negative poles of battery B1 and battery B2, respectively. Fig. 2 is a schematic block diagram of the parallel pre-connection device for the storage battery of the present invention.
Embodiments of the present invention are described in further detail with reference to fig. 1 and 2.
The utility model discloses parallelly connected device that connects in advance of battery mainly includes auxiliary power supply module, shows control module, first direct current contactor K1, second direct current contactor K2, first current-limiting resistance R1, first current sensor T1, first diode V1, second diode V2, first switch K3, first wiring end B1+, second wiring end B2+ and third wiring end B1-.
The two ends of the main contact of the second dc contactor K2 are connected with a first terminal B1+ and a second terminal B2+, the main contacts of the first current limiting resistor R1 and the first dc contactor K1 are connected with a first terminal B1+ and a second terminal B2+ after being connected in series, the first current limiting resistor R1 passes through a first current sensor T1, one end of a coil of the first dc contactor K1 and the second dc contactor K2 is connected with an auxiliary power module, the other end of the coil is connected with a display control module, the power supply end of the first current sensor T1 is connected with an auxiliary power module, the sampling end of the first current sensor T1 is connected with the display control module, the anode of the first diode V1 is connected with the first terminal B1+ and the display control module, the anode of the second diode V2 is connected with the second terminal B2+ and the display control module, the cathodes of the first diode V1 and the second diode V2 are connected with the auxiliary power module, one end of the first switch K3 is connected with the auxiliary power supply module and the display control module, and the other end is connected with the third terminal B1-.
The auxiliary power supply module is mainly used for supplying power to the display control module, the first direct current contactor K1, the second direct current contactor K2 and the first current sensor T1, and has protection functions of input overvoltage, output short circuit and the like. The auxiliary power supply module adopts two storage batteries to be connected in parallel to supply power simultaneously, so that the storage battery parallel pre-connection device is ensured to work normally under the multi-working condition, and the dependence of the storage battery parallel pre-connection device on a single power supply is reduced.
The display control module is mainly used for centralized control, function realization and information display of the storage battery parallel pre-connection device. The display control module mainly comprises a control unit, a sampling circuit, a control circuit, a display circuit, an auxiliary power supply and the like. The control unit is mainly used for centralized control of the storage battery parallel pre-connection device; the sampling circuit is mainly used for sampling the terminal voltage and the parallel current of the storage battery; the control circuit is mainly used for controlling the first direct current contactor K1 and the second direct current contactor K2; the display circuit is mainly used for displaying state information in the parallel connection process of the storage batteries; the auxiliary power supply is mainly used for supplying power to the control unit, the sampling circuit, the control circuit and the display circuit.
The first direct current contactor K1 is used for switching on and off a loop for discharging between the anodes of the two storage batteries to be connected in parallel through the current limiting resistor.
The second direct current contactor K2 is used for switching on and off between the anodes of the two storage batteries to be connected in parallel.
The first current limiting resistor R1 is used for reducing the current caused by the voltage difference between the storage battery B1 and the storage battery B2, and the current limiting resistor adopts a high-efficiency element and has strong overcurrent capacity.
The first current sensor T1 collects the current through the first current limiting resistor R1.
The first diode V1 is connected in a power supply channel of the battery B1 for the auxiliary power supply module and is used for preventing the voltage of the battery B2 from flowing backwards to the battery B1.
The second diode V2 is connected in a power supply channel of the storage battery B2 for the auxiliary power supply module and is used for preventing the voltage of the storage battery B1 from reversely flowing to the storage battery B2.
First switch K3 is used for controlling auxiliary power supply module power supply input break-make, and then realizes the utility model discloses a startup and shutdown control.
The first terminal B1+ is used for clamping at the positive pole of the storage battery B1.
The second terminal B2+ is used for clamping the positive pole of the storage battery B2.
The third terminal B1-is used for clamping the negative pole of the storage battery B1.
The following description is made in conjunction with the working principle of the embodiments of the present invention:
referring to fig. 2, when the first terminal B1+ is securely clamped at the positive pole of the battery B1, the second terminal B2+ is securely clamped at the positive pole of the battery B2, and the third terminal B1-is securely clamped at the negative pole of the battery B1, the first switch K3 is closed, and the auxiliary power module is powered on and outputs the required electric energy. The display control module detects the terminal voltage U1 of the storage battery B1 and the terminal voltage U2 of the storage battery B2, when the differential pressure delta U between the terminal voltage U1 of the storage battery B1 and the terminal voltage U2 of the storage battery B2 is larger than the differential pressure delta U1, the display control module closes the first direct current contactor K1, opens the second direct current contactor K2, the storage battery B1+ and the storage battery B2+ are connected with the first direct current contactor K1 through a current limiting resistor, the differential pressure between the terminal voltage of the storage battery B1 and the terminal voltage of the storage battery B2 is reduced through the first current limiting resistor, and meanwhile, the first current sensor collects the current; when the voltage difference delta U between the terminal voltage U1 of the storage battery B1 and the terminal voltage U2 of the storage battery B2 is less than delta U1-U2, the display control module opens the first direct current contactor K1, closes the second direct current contactor K2, switches on the storage battery B1+ and the storage battery B2+, and the terminal voltage of the storage battery B1 is consistent with the terminal voltage of the storage battery B2, the storage battery parallel pre-connection device realizes the parallel pre-connection of the storage batteries, and prompts the completion of the parallel pre-connection of the storage batteries in the display control module.
When using, when adopting the embodiment of the utility model discloses when carrying out battery B1 and battery B2, at first firmly connect battery B1 and battery B2's negative pole with negative pole interconnection line, then with B-end clamp in battery B1's negative pole, again with B1+ end and B2+ end clamp respectively at battery B1 positive pole and battery B2 positive pole. Closed the utility model discloses start switch (being K3), the automatic preconnection between battery B1 anodal and battery B2 positive pole of accomplishing, after the suggestion preconnection has been accomplished, the positive interconnection line of reuse is with battery B1 positive pole and battery B2 positive pole firm connection, accomplishes battery B1 and battery B2 and connects in parallel promptly.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (2)
1. The utility model provides a parallelly connected device of connecing in advance of battery which characterized in that: the display control device comprises an auxiliary power supply module and a display control module;
the display control module is connected with one end of a main contact of a second direct current contactor K2 and connected with a first terminal B1+ and a second terminal B2+, a first current limiting resistor R1 is connected with the main contact of a first direct current contactor K1 in series and then connected with a first terminal B1+ and a second terminal B2+, a first current limiting resistor R1 penetrates through a first current sensor T1, one ends of coils of the first direct current contactor K1 and the second direct current contactor K2 are connected with the auxiliary power module, the other ends of the coils are connected with the display control module, the power supply end of the first current sensor T1 is connected with the auxiliary power module, the sampling end of the first current sensor T1 is connected with the display control module, the anode of a first diode V1 is connected with the first terminal B1+ and the display control module, the anode of a second diode V2 is connected with a second terminal B2+ and the display control module, the cathodes of the first diode V1 and the second diode V2 are connected with the auxiliary power module, and one end of the first switch K3 is connected with the, And the other end is connected with a third terminal B1-.
2. The parallel pre-connection device for storage batteries according to claim 1, characterized in that: the display control module comprises a control unit, a sampling circuit, a control circuit, a display circuit and an auxiliary power supply;
wherein, the control unit is used for centralized control;
the sampling circuit is used for sampling the terminal voltage and the parallel current of the storage battery;
the control circuit is used for controlling the first direct current contactor K1 and the second direct current contactor K2;
the display circuit is used for displaying state information in the parallel connection process of the storage batteries;
the auxiliary power supply is used for supplying power to the control unit, the sampling circuit, the control circuit and the display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394654.5U CN209929390U (en) | 2019-03-26 | 2019-03-26 | Parallel pre-connection device for storage batteries |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394654.5U CN209929390U (en) | 2019-03-26 | 2019-03-26 | Parallel pre-connection device for storage batteries |
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| CN209929390U true CN209929390U (en) | 2020-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11682812B2 (en) | 2021-03-31 | 2023-06-20 | Enovix Corporation | Electrode assemblies including current limiters and methods of assembling such electrode assemblies |
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- 2019-03-26 CN CN201920394654.5U patent/CN209929390U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11682812B2 (en) | 2021-03-31 | 2023-06-20 | Enovix Corporation | Electrode assemblies including current limiters and methods of assembling such electrode assemblies |
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