CN213581282U - Controller and battery pack recognition device - Google Patents
Controller and battery pack recognition device Download PDFInfo
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- CN213581282U CN213581282U CN202022293538.XU CN202022293538U CN213581282U CN 213581282 U CN213581282 U CN 213581282U CN 202022293538 U CN202022293538 U CN 202022293538U CN 213581282 U CN213581282 U CN 213581282U
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Abstract
The utility model provides a controller, which is provided with a battery pack power supply connecting end and a detection resistance connecting end, and also comprises a power supply module, a central controller and a sampling divider resistor; the power supply module is connected with the power supply connecting end of the battery pack; one end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is connected with the central controller and the detection resistor connecting end respectively. The utility model provides a controller and battery package recognition device can provide and possess battery package recognition function and the more succinct controller of structure.
Description
Technical Field
The utility model belongs to the technical field of integrated circuit and battery technique and specifically relates to a controller and battery package recognition device are related to.
Background
In a solar controller system, there are two battery pack access methods: the first is that the controller does not identify the battery pack, and all the battery packs can be accessed; the second is that the controller and the battery pack both have a communication function, and both perform handshake recognition.
Although the first battery access scheme described above can be incorporated into a solar controller system by mixing various battery packs, it cannot identify the battery pack accessed. For safety and reliability, before the battery pack is accessed to the system, the controller needs to perform validity judgment on the battery pack, that is, after judging whether the battery pack meets the requirements of the system controller, the controller allows the solar controller system to be accessed. Although the second battery access scheme can judge the validity of the accessed battery, the scheme requires that the accessed battery pack has a communication function, and is not suitable for all types of batteries.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a controller and battery package recognition device can provide and possess the more succinct controller of battery package recognition function and structure. The technical scheme is as follows:
the embodiment of the utility model provides a controller, which is provided with a battery pack power supply connecting end and a detection resistor connecting end, and also comprises a power supply module, a central controller and a sampling divider resistor;
the power supply module is connected with the power supply connecting end of the battery pack;
one end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is connected with the central controller and the detection resistor connecting end respectively.
As a preferred scheme, the controller is further provided with a photovoltaic panel connecting end, a load connecting end, a charging switch, a discharging switch, a charging control module and a discharging control module;
the photovoltaic panel connecting end is connected with the charging control module through the charging switch;
the load connecting end is connected with the discharge control module through the discharge switch;
the charging control module and the discharging control module are both connected with the power supply connecting end of the battery pack;
the charging switch and the discharging switch are respectively connected with the central controller.
Preferably, the specific circuit of the charging switch includes a first diode, a first capacitor, a first triode, a first resistor, a second resistor, and a relay for switching on or off a line between the connection end of the photovoltaic panel and the charging control module;
the negative electrode of the first diode is connected with an input power supply, and the positive electrode of the first diode is connected with the collector electrode of the first triode;
the first diode and the first capacitor are connected with the control end of the relay in parallel;
the base electrode of the first triode is connected with the first resistor and then is connected to the central controller;
and the emitter of the first triode is connected with the second resistor and then grounded.
Preferably, the specific circuit of the discharge switch includes a second diode, a second capacitor, a second triode, a third resistor, a fourth resistor, and a relay for switching on or off a line between the load connection terminal and the discharge control module;
the negative electrode of the second diode is connected with an input power supply, and the positive electrode of the second diode is connected with the collector electrode of the second triode;
the second diode and the second capacitor are connected with the control end of the relay in parallel;
the base electrode of the second triode is connected with the third resistor and then is connected to the central controller;
and the emitter of the second triode is connected with the fourth resistor and then grounded.
As a preferred scheme, the power module comprises a voltage reduction chip, a power inductor, a filter capacitor and a feedback resistor;
the positive terminal of the voltage reduction chip is connected with an input power supply, the bootstrap output terminal of the voltage reduction chip is connected with the power inductor in series, and the bootstrap output terminal of the voltage reduction chip is connected with the feedback resistor and the filter capacitor in parallel.
As a preferred scheme, the power module further comprises an input filter capacitor; and the positive end of the voltage reduction chip is connected with the input filter capacitor in parallel.
As a preferred scheme, the power module further comprises a feedback divider resistor;
the voltage reduction chip is also provided with a feedback input end; the feedback input end is connected with the feedback divider resistor in series and then is grounded.
Preferably, the power module further includes an enable voltage-dividing resistor;
the voltage reduction chip is also provided with an enabling end; the enabling end is connected with the enabling voltage dividing resistor and the input power supply.
In addition, the embodiment of the utility model provides a battery package recognition device, include the controller as above arbitrary to and the battery package;
the battery pack is internally provided with a battery core and a detection resistor;
the positive electrode of the battery core is connected with the power module, the charging control module and the discharging control module through a battery pack power supply connecting end of the controller;
one end of the detection resistor is connected with the detection resistor connecting end of the controller;
the other end of the detection resistor and the negative electrode of the battery cell are connected with a ground wire through a battery pack power connection end of the controller.
Preferably, the battery pack identification device further comprises a photovoltaic panel and a load;
the photovoltaic panel is connected with the photovoltaic panel connecting end of the controller;
the load is connected with the load connecting end of the controller.
Compared with the prior art, the embodiment of the utility model provides a have following beneficial effect:
the utility model provides a controller and battery package recognition device, the controller is equipped with battery package power connection end and detection resistance link, still includes power module, central controller and sampling divider resistance. The power supply module is connected with the power supply connecting end of the battery pack; when the controller is connected with the battery pack, the power supply connecting piece of the battery pack is connected with the power supply module through the power supply connecting end of the battery pack, so that the electric energy transmission between the battery pack and the controller is realized.
One end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is respectively connected with the central controller and the detection resistor connecting end; when the controller is connected with the battery pack, the built-in resistor of the battery pack, namely the detection resistor, is connected with the controller through the detection resistor connecting end, forms an equivalent sampling circuit with the sampling divider resistor and the central processor, and finally, the central controller initiates sampling, so that the operation of identifying the detection resistor is completed, the identification of the accessed battery pack is realized, and the battery pack without a communication function can be accessed into the controller to judge the legality of the battery pack.
In addition, the battery pack can provide electric energy for the controller, and the electric energy provided by the battery pack is converted by the power supply module and then is input to the central controller through the sampling divider resistor, so that the central controller is powered without additionally arranging a power supply input point for the central controller, the circuit structure is simplified, and the manufacturing cost is saved.
Drawings
Fig. 1 is a schematic diagram of internal modules of a controller according to an embodiment of the present invention;
fig. 2 is a circuit diagram of the equivalent sampling circuit in a controller according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a charging switch of a controller in an embodiment of the invention;
fig. 4 is a circuit diagram of a discharge switch of a controller in an embodiment of the invention;
fig. 5 is a circuit diagram of a power module of a controller in an embodiment of the invention;
fig. 6 is a schematic diagram of connection relationships among modules in a battery pack identification apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the present disclosure provides an exemplary embodiment, in which a controller is provided with a power connection terminal of a battery pack and a detection resistor connection terminal, and further includes a power module, a central controller, and a sampling voltage dividing resistor;
the power supply module is connected with the power supply connecting end of the battery pack;
one end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is connected with the central controller and the detection resistor connecting end respectively.
It can be understood that, when the controller is connected with the battery pack, the built-in resistor of the battery pack, i.e. the detection resistor, is connected to the controller through a lead, is connected with the controller through the detection resistor connection end, and forms an equivalent sampling circuit with the sampling divider resistor and the central processor.
Referring to fig. 2, the detection resistor of the battery pack is Rdet, the sampling voltage dividing resistor is R1, and the central processor adopts a single chip. The conventional single chip microcomputer is provided with an ADC (analog to digital converter) circuit, and sampling can be initiated at fixed time through the ADC circuit; the timing period can be set autonomously as required. According to the equivalent sampling circuit shown in the figure, the voltage which can be sampled by the ADC circuit of the single chip microcomputer is Vset, and the detection resistance can be calculated through the principle of a voltage division circuit.
For example, in an embodiment, R1 is a known resistor, and when the sampled voltage is Vdet, even with a lower arithmetic unit, a specific value of the detection resistor Rdet can be calculated according to a simple procedure set by the equation Rdet R1/(3.3/Vdet-1), so as to identify the resistance value of the battery pack.
Compared with the existing scheme, the scheme is safer and more reliable than the scheme without the battery pack access identification function; compared with the scheme of communication negotiation between the two parties, the battery pack and the two ends of the controller are both required to use the chips supporting communication, and the scheme only needs to add the single chip microcomputer with the ADC sampling circuit at the controller end, so that the manufacturing cost is lower.
The scheme also provides a preferred embodiment, the controller is also provided with a photovoltaic panel connecting end, a load connecting end, a charging switch, a discharging switch, a charging control module and a discharging control module;
the photovoltaic panel connecting end is connected with the charging control module through the charging switch;
the load connecting end is connected with the discharge control module through the discharge switch;
the charging control module and the discharging control module are both connected with the power supply connecting end of the battery pack;
the charging switch and the discharging switch are respectively connected with the central controller.
In this embodiment, the charging switch and the discharging switch may be implemented by high power MOS transistors or relays.
In this embodiment, the charge-discharge module is a general module of the controller, and is not limited to a specific implementation principle and circuit.
The charging control module is positioned between the input of the photovoltaic panel and the battery, is generally realized by a charging control chip and is used for realizing the control and protection of a charging function, and the charging control mode is of PWM (pulse width modulation), MPPT (maximum power point tracking) and other types and mainly aims at improving the charging efficiency. The charging protection is under voltage, overvoltage, overcurrent, short circuit and the like;
the discharge control module is positioned between the battery and the load and used for realizing discharge function control and protection, the discharge control can be in a voltage boosting and reducing mode, a direct output mode and the like, the power utilization requirements of the load are mainly met, and the protection function comprises overcurrent, short circuit and the like.
Referring to fig. 3, in the present embodiment, the specific circuit of the charging switch includes a first diode, a first capacitor, a first triode, a first resistor, a second resistor, and a relay for connecting or disconnecting the circuit between the connection end of the photovoltaic panel and the charging control module;
the negative electrode of the first diode is connected with an input power supply, and the positive electrode of the first diode is connected with the collector electrode of the first triode;
the first diode and the first capacitor are connected with the control end of the relay in parallel;
the base electrode of the first triode is connected with the first resistor and then is connected to the central controller;
and the emitter of the first triode is connected with the second resistor and then grounded.
Referring to fig. 4, in the present embodiment, a specific circuit of the discharge switch includes a second diode, a second capacitor, a second triode, a third resistor, a fourth resistor, and a relay for turning on or off a circuit between the load connection terminal and the discharge control module;
the negative electrode of the second diode is connected with an input power supply, and the positive electrode of the second diode is connected with the collector electrode of the second triode;
the second diode and the second capacitor are connected with the control end of the relay in parallel;
the base electrode of the second triode is connected with the third resistor and then is connected to the central controller;
and the emitter of the second triode is connected with the fourth resistor and then grounded.
As shown in fig. 3 and 4, the input power source is Vbat, which represents a battery voltage.
Referring to fig. 3 and 4, the single chip microcomputer (i.e., the central controller) sends two Control signals, namely, a Charge Control signal and a Discharge Control signal, to the Charge switch and the Discharge switch through the pin of the GPIO of the single chip microcomputer respectively to Control the Charge switch and the Discharge switch.
The scheme also provides a preferred embodiment, and the power supply module comprises a voltage reduction chip, a power inductor, a filter capacitor and a feedback resistor;
the positive terminal of the voltage reduction chip is connected with an input power supply, and the bootstrap output terminal of the voltage reduction chip is connected with the power inductor in series and is connected with the feedback resistor and the filter capacitor in parallel.
This embodiment also provides a preferred implementation, in which the power module further includes an input filter capacitor; and the positive end of the voltage reduction chip is connected with the input filter capacitor in parallel.
The present embodiment further provides a preferred implementation manner, wherein the power module further includes a feedback voltage-dividing resistor;
the voltage reduction chip is also provided with a feedback input end; the feedback input end is connected with the feedback divider resistor in series and then is grounded.
The present embodiment further provides a preferred implementation manner, where the power module further includes an enable voltage dividing resistor;
the voltage reduction chip is also provided with an enabling end; the enabling end of the voltage reduction chip is connected with the enabling divider resistor and the input power supply.
Referring to fig. 5, the positive terminal VIN of the buck chip is connected in parallel with the first input filter capacitor C3256 and the second input filter capacitor C3257, one end of the first input filter capacitor C3256 and one end of the second input filter capacitor C3257 are connected to the input power supply, and the other end is grounded.
The enable terminal EN of the voltage reduction chip is connected to the first enable voltage-dividing resistor R2659 and to the input power supply, and is connected to one end of the second enable voltage-dividing resistor R2660, and the other end of the second enable voltage-dividing resistor R2660 is grounded.
And the grounding end GND of the voltage reduction chip is grounded.
A first bootstrap output terminal BOOT and a second bootstrap output terminal SW of the buck chip are connected in series with the power inductor L1, and are connected in parallel with a first feedback resistor R2658, a second feedback resistor R2656, a first filter capacitor C3251 and a second filter capacitor C3252; a third capacitor C3258 is further provided between the first bootstrap output terminal BOOT and the power inductor L1.
A feedback input end FB of the voltage reduction chip is connected with a first feedback voltage division resistor R2657 and then grounded, and is also connected with a second feedback voltage division resistor R2656 and a first feedback capacitor C3255 in parallel; one end of the second feedback voltage-dividing resistor R2656 and one end of the first feedback capacitor C3255 are connected to the feedback input terminal FB, and the other end of the second feedback voltage-dividing resistor R2656 and the other end of the first feedback capacitor C3255 are connected to the first feedback resistor R2658.
In this embodiment, the power module completes the voltage conversion of Vbat-3.3V, and is used for a power supply of the single chip microcomputer system.
Referring to fig. 6, the present disclosure provides an exemplary embodiment of a battery pack identification apparatus, which includes the controller as described above, and a battery pack;
the battery pack is internally provided with a battery core and a detection resistor;
the positive electrode of the battery core is connected with the power module, the charging control module and the discharging control module through a battery pack power supply connecting end of the controller;
one end of the detection resistor is connected with the detection resistor connecting end of the controller;
the other end of the detection resistor and the negative electrode of the battery cell are connected with a ground wire through a battery pack power connection end of the controller.
Compared with the existing scheme, the existing scheme for communication negotiation between two parties needs to add two connecting wires, namely a data receiving wire and a data sending wire, between the controller and the battery pack; compared with the prior art, the scheme only needs to add one detecting resistance connecting wire, and the connecting wire is simpler.
In this embodiment, the battery pack identification apparatus further includes a photovoltaic panel and a load;
the photovoltaic panel is connected with the photovoltaic panel connecting end of the controller;
the load is connected with the load connecting end of the controller.
The embodiment of the utility model provides a controller and battery package recognition device, the controller is equipped with battery package power connection end and detection resistance link, still includes power module, central controller and sampling divider resistance. The power supply module is connected with the power supply connecting end of the battery pack; when the controller is connected with the battery pack, the power supply connecting piece of the battery pack is connected with the power supply module through the power supply connecting end of the battery pack, and the power supply module converts the voltage into 3.3V for supplying power to the single chip microcomputer. The charging control module controls the charging of the battery pack, and the discharging control module controls the discharging of the battery pack.
One end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is respectively connected with the central controller and the detection resistor connecting end; when the controller is connected with the battery pack, the built-in resistor of the battery pack, namely the detection resistor, is connected with the controller through the detection resistor connecting end, forms an equivalent sampling circuit with the sampling divider resistor and the central processor, and finally, the central controller initiates sampling, so that the operation of identifying the detection resistor is completed, the identification of the accessed battery pack is realized, and the battery pack without a communication function can be accessed into the controller to judge the legality of the battery pack.
In addition, the battery pack can provide electric energy for the controller, and the electric energy provided by the battery pack is converted by the power supply module and then is input to the central controller through the sampling divider resistor, so that the central controller is powered without additionally arranging a power supply input point for the central controller, the circuit structure is simplified, and the manufacturing cost is saved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A controller is characterized by being provided with a battery pack power supply connecting end and a detection resistor connecting end, and further comprising a power supply module, a central controller and a sampling divider resistor;
the power supply module is connected with the power supply connecting end of the battery pack;
one end of the sampling divider resistor is connected with the power module, and the other end of the sampling divider resistor is connected with the central controller and the detection resistor connecting end respectively.
2. The controller of claim 1, further comprising a photovoltaic panel connection, a load connection, and a charge and discharge switch, a charge control module, and a discharge control module;
the photovoltaic panel connecting end is connected with the charging control module through the charging switch;
the load connecting end is connected with the discharge control module through the discharge switch;
the charging control module and the discharging control module are both connected with the power supply connecting end of the battery pack;
the charging switch and the discharging switch are respectively connected with the central controller.
3. The controller according to claim 2, wherein a specific circuit of the charging switch comprises a first diode, a first capacitor, a first triode, a first resistor and a second resistor, and a relay for connecting or disconnecting a line between the photovoltaic panel connection terminal and the charging control module;
the negative electrode of the first diode is connected with an input power supply, and the positive electrode of the first diode is connected with the collector electrode of the first triode;
the first diode and the first capacitor are connected with the control end of the relay in parallel;
the base electrode of the first triode is connected with the first resistor and then is connected to the central controller;
and the emitter of the first triode is connected with the second resistor and then grounded.
4. The controller according to claim 2, wherein a specific circuit of the discharge switch includes a second diode, a second capacitor, a second triode, a third resistor and a fourth resistor, and a relay for connecting or disconnecting a line between the load connection terminal and the discharge control module;
the negative electrode of the second diode is connected with an input power supply, and the positive electrode of the second diode is connected with the collector electrode of the second triode;
the second diode and the second capacitor are connected with the control end of the relay in parallel;
the base electrode of the second triode is connected with the third resistor and then is connected to the central controller;
and the emitter of the second triode is connected with the fourth resistor and then grounded.
5. The controller of claim 2, wherein the power module comprises a buck chip, a power inductor, a filter capacitor, and a feedback resistor;
the positive terminal of the voltage reduction chip is connected with an input power supply, the bootstrap output terminal of the voltage reduction chip is connected with the power inductor in series, and the bootstrap output terminal of the voltage reduction chip is connected with the feedback resistor and the filter capacitor in parallel.
6. The controller of claim 5, wherein the power module further comprises an input filter capacitor; and the positive end of the voltage reduction chip is connected with the input filter capacitor in parallel.
7. The controller of claim 5, wherein the power module further comprises a feedback divider resistor;
the voltage reduction chip is also provided with a feedback input end; the feedback input end is connected with the feedback divider resistor in series and then is grounded.
8. The controller of claim 5, wherein the power module further comprises an enable divider resistor;
the voltage reduction chip is also provided with an enabling end; the enabling end is connected with the enabling voltage dividing resistor and the input power supply.
9. A battery pack identification device comprising a controller according to any one of claims 2 to 8, and a battery pack;
the battery pack is internally provided with a battery core and a detection resistor;
the positive electrode of the battery core is connected with the power module, the charging control module and the discharging control module through a battery pack power supply connecting end of the controller;
one end of the detection resistor is connected with the detection resistor connecting end of the controller;
the other end of the detection resistor and the negative electrode of the battery cell are connected with a ground wire through a battery pack power connection end of the controller.
10. The battery pack identification device of claim 9, further comprising a photovoltaic panel and a load;
the photovoltaic panel is connected with the photovoltaic panel connecting end of the controller;
the load is connected with the load connecting end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022293538.XU CN213581282U (en) | 2020-10-14 | 2020-10-14 | Controller and battery pack recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022293538.XU CN213581282U (en) | 2020-10-14 | 2020-10-14 | Controller and battery pack recognition device |
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| Publication Number | Publication Date |
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| CN213581282U true CN213581282U (en) | 2021-06-29 |
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| CN202022293538.XU Active CN213581282U (en) | 2020-10-14 | 2020-10-14 | Controller and battery pack recognition device |
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