CN215218966U - Pad short circuit structure, power supply circuit and smart electric meter - Google Patents

Abstract

The application discloses a pad short-circuit structure, a power circuit and an intelligent electric meter, wherein the pad short-circuit structure comprises at least one public pad, and the public pad is used for connecting voltage or grounding; the functional pads are arranged adjacent to the common pad and used for being connected with the common pad to carry out short circuit; each functional bonding pad is respectively used for being connected with each corresponding power supply circuit, the functional bonding pads correspond to the power supply circuits one by one, and each power supply circuit is connected to the input circuit or the output circuit in parallel. This application can just accomplish the short circuit operation to a plurality of pad short-circuit points through one step of operation process, and short circuit operation process is more simple and convenient, effectively improves product production efficiency.

Description

Pad short circuit structure, power supply circuit and smart electric meter

Technical Field

The application relates to the technical field of circuit short circuit, in particular to a pad short circuit structure, a power supply circuit and an intelligent electric meter.

Background

The existing electric appliances (such as a smart meter) need to exist simultaneously with a plurality of power sources. For safety in product production and product maintenance, before a plurality of power supplies enter a main circuit, for example, for two power supplies, power supply circuits of the two power supplies are usually connected in series with a two-pad short-circuit structure (the two-pad short-circuit structure refers to a pad short-circuit structure with two pad short-circuits). For safety reasons of products in the production process, it is common to perform the shorting operation of each pad shorting point after the PCBA (Printed Circuit Board Assembly) inspection is completed and when the pcb enters a post-Assembly station. Because the power supply circuits of the two power supplies are respectively connected with the two-pad short-circuit structure in series, the two-pad short-circuit structure needs to be subjected to short-circuit operation respectively, namely the operation procedure needs to be carried out in two steps, so that the short-circuit operation procedure of the structure is troublesome, and the production efficiency of products is influenced.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a pad short circuit structure, can just accomplish the short circuit operation to a plurality of pad short circuit points through one-step operation, and short circuit operation is more simple and convenient, effectively improves product production efficiency.

The application also provides a power supply circuit with the pad short-circuit structure.

The application also provides a smart electric meter with the power supply circuit.

An embodiment of a first aspect of the present application provides a pad shorting structure, including: at least one common pad and at least two functional pads, wherein the common pad is used for connecting voltage or grounding; the functional bonding pad and the common bonding pad are arranged adjacently, and the functional bonding pad is used for being connected with the common bonding pad to carry out short circuit; each functional bonding pad is respectively used for being connected with each corresponding power supply circuit, the functional bonding pads correspond to the power supply circuits one by one, and each power supply circuit is connected to the input circuit or the output circuit in parallel.

One or more technical schemes provided in the embodiment of the application have at least the following beneficial effects: the pad short circuit structure of the embodiment of the application is provided with at least one common pad and at least two functional pads, and the common bonding pad and the functional bonding pad are adjacently arranged, so that the arrangement has the advantages that one functional bonding pad is correspondingly connected with one power supply circuit, namely, the power supply circuits and the functional pads are in one-to-one correspondence, when short-circuit operation needs to be carried out on each power supply circuit (namely, short-circuit operation needs to be carried out on each functional pad), each functional pad can be connected to the common pad by one soldering, and since the common pad is used for connecting a voltage or a ground, thereby can make and realize the short circuit between each supply circuit, compare and need many times operation process just can carry out the short circuit to each pad short-circuit point among the prior art, the short circuit operation process of this application embodiment is more simple and convenient, and can effectively improve product production efficiency.

According to some embodiments of the first aspect of the present application, the common pad is arranged side by side with the functional pad.

According to some embodiments of the first aspect of the present application, the common pads are alternately disposed with the functional pads, and the common pads are disposed between the functional pads.

An embodiment of a second aspect of the present application provides a power supply circuit, including: the pad shorting structure according to the embodiment of the first aspect of the present application; the power supply circuits are respectively connected with the corresponding functional bonding pads, and the power supply circuits are in one-to-one correspondence with the functional bonding pads; each of the power supply circuits is connected in parallel to either the input circuit or the output circuit.

One or more technical schemes provided in the embodiment of the application have at least the following beneficial effects: the power supply circuit of this application embodiment, be provided with as above-mentioned first aspect embodiment pad short circuit structure and two at least supply circuit, correspond with each supply circuit respectively through each function pad with in the pad short circuit structure and be connected, each function pad is connected in order to carry out the short circuit with public pad respectively, thereby make each supply circuit realize the short circuit, compare in prior art need many times operation process just can carry out the mode of short circuit operation to each supply circuit (to each pad short junction promptly), this application embodiment can be through one step of operation process, just accomplish the short circuit to two at least supply circuit, short circuit operation process is more simple and convenient, effectively improve product production efficiency.

According to some embodiments of the second aspect of the present application, the power supply circuit comprises a first power supply circuit and a second power supply circuit; the pad short circuit structure comprises a common pad, a first functional pad and a second functional pad, wherein the common pad is respectively arranged adjacent to the first functional pad and the second functional pad, and the first functional pad and the second functional pad are respectively used for being connected with the common pad for short circuit; the first power supply circuit is connected to the first functional pad, and the second power supply circuit is connected to the second functional pad.

According to some embodiments of the second aspect of the present application, the first power supply circuit is a battery power supply circuit and the second power supply circuit is a farad capacitor power supply circuit.

According to some embodiments of the second aspect of the present application, the battery supply circuit comprises a first battery and a first diode, an anode of the first battery is connected to an anode of the first diode, a cathode of the first battery is connected to the first functional pad, and a cathode of the first diode and the faraday capacitor supply circuit are connected in parallel to an input circuit or an output circuit.

According to some embodiments of the second aspect of the present application, the farad capacitor power supply circuit comprises a first farad capacitor and a second diode, an anode of the first farad capacitor is connected to an anode of the second diode, a cathode of the first farad capacitor is connected to the second functional pad, and a cathode of the second diode and the battery power supply circuit are connected to the input circuit or the output circuit in parallel.

According to some embodiments of the second aspect of the present application, the power supply circuit further comprises a voltage stabilizing circuit; the battery power supply circuit and the farad capacitor power supply circuit are connected in parallel and then are connected to the output circuit through the voltage stabilizing circuit.

An embodiment of a third aspect of the present application provides a smart meter, including: the power supply circuit according to the embodiment of the second aspect of the present application.

One or more technical schemes provided in the embodiment of the application have at least the following beneficial effects: the utility model provides an intelligent electric meter can alright realize the short circuit operation to two at least supply circuit (to a plurality of pad short-circuit points promptly) through one step of short circuit operation process, compares with prior art, and short circuit operation process is more simple and convenient, effectively improves product production efficiency.

Additional aspects and/or advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic circuit diagram of a related art circuit in which power supply circuits of two power supplies are connected in series with a two-pad shorting structure;

fig. 2 is a schematic structural diagram of a pad shorting structure provided in an embodiment of the first aspect of the present application;

fig. 3 is a schematic structural diagram of a pad shorting structure provided in another embodiment of the first aspect of the present application;

fig. 4 is a schematic structural diagram of a pad shorting structure provided in another embodiment of the first aspect of the present application;

FIG. 5 is a circuit schematic of a power supply circuit provided by an embodiment of a second aspect of the present application;

FIG. 6 is a circuit schematic of a power supply circuit provided in another embodiment of the second aspect of the present application;

fig. 7 is a circuit schematic diagram of a power circuit provided in another embodiment of the second aspect of the present application.

Reference numerals:

a common pad 100, a first common pad 101, a second common pad 102; a functional pad 110, a first functional pad 111, a second functional pad 112, a third functional pad 113;

a first power supply circuit 200, a battery power supply circuit 210; a second power supply circuit 300, a farad capacitor power supply circuit 310; a rectifier circuit 400; a voltage stabilizing circuit 500; an output circuit 600.

Detailed Description

Reference will now be made in detail to the present embodiments of the present application, preferred embodiments of which are illustrated in the accompanying drawings, which are for the purpose of visually supplementing the description with figures and detailed description, so as to enable a person skilled in the art to visually and visually understand each and every feature and technical solution of the present application, but not to limit the scope of the present application.

In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.

In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If any, first, second, third, etc. are used for distinguishing technical features only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a schematic circuit diagram illustrating a two-pad short circuit structure connected in series to a power supply circuit of two power supplies in the related art. The two pad short-circuit structures are a first two-pad short-circuit structure J10 and a second two-pad short-circuit structure J20, respectively. Specifically, the battery power supply circuit in the related art includes a second battery BAT2, a first two-pad short circuit structure J10, and a fourth diode D4, a negative electrode of the second battery BAT2 is grounded, a positive electrode of the second battery BAT2 is connected to one pad short point of the first two-pad short circuit structure J10, and another pad short point of the first two-pad short circuit structure J10 is connected to an anode of the fourth diode D4; the related art farad capacitor power supply circuit comprises a third farad capacitor E3, a second two-pad short-circuit structure J20 and a fifth diode D5, wherein the negative electrode of the third farad capacitor E3 is grounded, the positive electrode of the third farad capacitor E3 is connected with one pad short-circuit point in the second two-pad short-circuit structure J20, the other pad short-circuit point in the second two-pad short-circuit structure J20 is connected with the anode of the fifth diode D5, and the cathode of the fourth diode D4 is connected with the cathode of the fifth diode D5 in parallel to output a voltage V_BEThat is, the cathode of the fourth diode D4 and the cathode of the fifth diode D5 are connected in parallel to one end of the thirty-th resistor R30, and the other end of the thirty-th resistor R30 is connected to the output circuit. Both TP10 and TP20 in fig. 1 are test ports; v in FIG. 1_BEIndicating battery power supplyAnd the power supply circuit of the Farad capacitor is connected in parallel and then outputs a voltage value. As shown in fig. 1, the battery supply circuit is connected in series with a first two-pad shorting J10, and the faraday capacitor supply circuit is connected in series with a second two-pad shorting J20. The two-pad shorting structures are located at different locations on a PCB (Printed Circuit Board). In consideration of product production safety in the production flow, generally, after the PCBA is detected and is loaded into the post-loading station, two pad short-circuit points in each two-pad short-circuit structure are respectively subjected to short-circuit operation, that is, two operation procedures are required to complete the short-circuit operation on the two-pad short-circuit structures (i.e., the first two-pad short-circuit structure J10 and the second two-pad short-circuit structure J20). In other related technologies, since the power supply circuits of each power supply are generally required to be disconnected or shorted together, when the power supply circuits of three or more power supplies are respectively connected in series to a two-pad short-circuit structure, three or more operation processes are required to complete the short-circuit operation of the power supply circuits of all the power supplies, which is troublesome and inefficient.

Based on this, the application provides a pad short circuit structure, power supply circuit and smart electric meter, can just accomplish the short circuit operation to a plurality of pad short circuit through one-step operation, and short circuit operation is more simple and convenient, effectively improves product production efficiency.

The embodiments of the present application will be further explained with reference to the drawings.

Referring to fig. 2, an embodiment of the first aspect of the present application provides a pad shorting structure, including: at least one common pad 100 and at least two functional pads 110, the functional pads 110 being arranged adjacent to the common pad 100, i.e. the functional pads 110 are arranged adjacent to the common pad 100, and the functional pads 110 are used for connecting to the common pad 100 for shorting. The advantage that sets up like this is, because each function pad 110 is used for connecting each power supply circuit that corresponds respectively, be the one-to-one relation between power supply circuit and the function pad 110, and each power supply circuit is through parallel connection to input circuit or output circuit 600, when needing to carry out the short circuit operation to each power supply circuit (need carry out the short circuit to each function pad 110 promptly), each function pad 110 can realize the connection with public pad 100 through once welding, and because public pad 100 is connected voltage or ground connection, thereby can make and realize the short circuit between each power supply circuit, compare and need many times operation process in prior art just can carry out the short circuit to each pad short junction, the short circuit operation process of this application technical scheme is simpler and more convenient, and can effectively improve product production efficiency.

In the related art, before a product is maintained, pad short-circuit points in each pad short-circuit structure are searched and disconnected in a time-consuming and multi-step mode, namely, after the pad short-circuit points in each pad short-circuit structure are disconnected respectively through a plurality of operation procedures, the maintenance work can be carried out, and therefore the product is prevented from being damaged due to circuit short-circuit. For example, referring to fig. 1, when a product is maintained, the two pad shorting points in the two pad shorting structures need to be disconnected in two steps, and then the product maintenance work can be performed, which is troublesome and time-consuming in operation procedure.

On the premise of not influencing the maintenance requirement of the product, the embodiment of the application can directly disconnect the connection between each functional pad 110 and the common pad 100 in the pad short-circuit structure, so that the short circuit between each power supply circuit is quickly disconnected, the product is maintained, the product is prevented from being damaged due to the short circuit, and the operation process is effectively saved.

It will be appreciated that when the common pad 100 is connected to a voltage, each supply circuit is connected to the input circuit by a parallel connection; or, each power supply circuit is connected to the output circuit 600 by parallel when the common pad 100 is grounded.

It is understood that the power supply circuit is a power supply circuit of the power supply, and the power supply may be an external power supply or an internal power supply, for example, a battery, a farad capacitor, or the like is provided.

It will be appreciated that the common pads 100 are arranged side by side with the functional pads 110.

For example, when one common pad 100 and two functional pads 110 are provided, the two functional pads 110 are provided as a first functional pad 111 and a second functional pad 112, and the first functional pad 111 is used for connection with the first power supply circuit 200 and the second functional pad 112 is used for connection with the second power supply circuit 300. At this time, the arrangement order between the common pad 100 and the first and second functional pads 111 and 112 may be: a common pad 100, a first functional pad 111, a second functional pad 112; or, as shown in fig. 3, a first functional pad 111, a common pad 100, a second functional pad 112, etc.;

for another example, when two common pads 100 and three functional pads 110 are provided, the arrangement order between the two common pads 100 and the three functional pads 110 may be: as shown in fig. 4, a first functional pad 111, a first common pad 101, a second functional pad 112, a second common pad 102, a third functional pad 113, and the like.

It is understood that the common pads 100 are arranged side by side and alternately with the functional pads 110, and the common pads 100 are disposed between the functional pads 110. In the present embodiment, in order to facilitate short-circuiting of the pad short-circuiting structure, each of the functional pads 110 and the common pad 100 arranged side by side can be short-circuited by one welding, an odd number of pads is usually provided. For example, 3 or 5 or 7 equal pads are provided, that is: one common pad 100 and two functional pads 110; or two common pads 100 and three functional pads 110; or three common pads 100 and four functional pads 110, etc. It is understood that the number of the functional pads 110 is generally set to be one more than the number of the common pads 100, and both sides located at the outer side are set as the functional pads 110. It will be appreciated that by so doing, it may also be convenient for a worker to find and identify the location of the functional pads 110. For example, by disposing one functional pad 110 on each of the two sides of the outer side, the worker can quickly distinguish the position of the functional pad 110, and the worker can further distinguish the position of the common pad 100 because the common pad 100 and the functional pads 110 are arranged side by side and alternately. When a product is maintained, the short circuit between the power supply circuits can be quickly cut off by disconnecting the functional bonding pad 110 from the common bonding pad 100, so that the product is maintained conveniently, and the operation procedures are effectively saved.

In some embodiments, an even number of pads may also be provided, for example, two common pads 100 and two functional pads 110, and the common pads 100 and the functional pads 110 are arranged side by side and alternately provided, which is not limited to the above embodiments and is not described herein again.

Because each common pad 100 is used for connecting voltage or is used for grounding, each functional pad 110 is respectively used for connecting each corresponding power supply circuit, each power supply circuit is connected to the same input circuit or output circuit 600 through parallel connection, the common pads 100 and the functional pads 110 are arranged side by side, and the common pads 100 and the functional pads 110 are arranged adjacently, so that when each power supply circuit needs to be subjected to short-circuit operation, each functional pad 110 and the common pad 100 which are arranged side by side can be connected through one-time welding, short-circuit among the power supply circuits is realized, the operation process is simple, and the production efficiency of products is effectively improved.

It can be understood that the pad shorting structure of the embodiment of the present application may include: m common pads 100 (where M ≧ 1) and N functional pads 110 (where N ≧ 2; in some embodiments, M +1 ═ N). Specifically, each common pad 100 and each functional pad 110 are arranged side by side and spaced apart; and the common pad 100 is disposed between the functional pads 110, i.e., one functional pad 110 is disposed on each of both sides located at the outer side. For example, when two common pads 100 and three functional pads 110 are provided, the arrangement order between the two common pads 100 and the three functional pads 110 may be: a first functional pad 111, a first common pad 101, a second functional pad 112, a second common pad 102, and a third functional pad 113. The advantage of setting up like this is, when only need carry out the short circuit to a certain supply circuit, only need find the function pad 110 that this supply circuit corresponds and connects to directly carry out the short circuit with the public pad 100 that this function pad 110 and this function pad 110 adjacent setting, just can realize the short circuit to the supply circuit who corresponds with this function pad 110 and connect, and the operation process is nimble and simpler and more convenient. In addition, when each supply circuit all need carry out the short circuit, direct short circuit operation through once, just can all be connected every function pad 110 in the pad short circuit structure with public pad 100, compare with prior art, the pad short circuit structure of this application embodiment can be through a short circuit operation process alright accomplish the short circuit to N pad short junction simultaneously (be to N function pad 110 promptly), compare with prior art, saved N-1(N is more than or equal to 2) short circuit operation processes, effectively improve product production efficiency.

An embodiment of a second aspect of the present application provides a power supply circuit, including: the pad shorting structure according to the above first aspect of the present application and the at least two power supply circuits, wherein the pad shorting structure includes at least one common pad 100 and at least two functional pads 110; the common pad 100 is used for connecting voltage or grounding, the functional pad 110 is arranged adjacent to the common pad 100, and the functional pad 110 is used for connecting with the common pad 100 for short circuit; each power supply circuit is respectively connected with each corresponding functional bonding pad 110, and the power supply circuits are in one-to-one correspondence with the functional bonding pads 110; each power supply circuit is connected in parallel to either the input circuit or the output circuit 600.

It can be understood that, in the power supply circuit of the embodiment of the present application, each functional pad 110 in the pad short-circuit structure is connected to each corresponding power supply circuit, when short-circuit operation needs to be performed on each power supply circuit, connection with the common pad 100 can be achieved only by welding each functional pad 110 once, and the common pad 100 is connected to voltage or ground, so that short-circuit between each power supply circuit can be achieved. Compared with the mode that the short circuit is respectively carried out on the pad short-circuit point of each power supply circuit by a plurality of times of operation procedures in the prior art, the short circuit operation procedure of the technical scheme is simple and convenient, the short circuit between at least two power supply circuits can be completed by one time of short circuit operation procedure, and the production efficiency of products is effectively improved.

It can be understood that when product maintenance is carried out, compared with an operation procedure that multi-step searching is needed and then the pad short-circuit point in each pad short-circuit structure is disconnected in the related art, the method and the device can directly disconnect the connection between each functional pad 110 and the common pad 100 in the pad short-circuit structure, thereby realizing the short circuit between each power supply circuit, facilitating the maintenance of the product, preventing the product from being damaged due to the short circuit of the circuit, and effectively saving the operation procedure.

It can be understood that the power circuit may include K power supply circuits (where K is greater than or equal to 2), each power supply circuit shares a pad short-circuit structure, the pad short-circuit structure includes N functional pads 110 (where N is greater than or equal to 2, and K is equal to N), and M common pads 100 (where M is greater than or equal to 1, and M +1 is equal to N), the common pads 100 are used for connecting voltage or ground, each functional pad 110 is respectively connected with each corresponding power supply circuit, the functional pads 110 and the common pads 100 are arranged side by side and alternately, and each common pad 100 needs to be disposed between the functional pads 110, that is, two sides of the outer side need to be set as the functional pads 110; the functional pads 110 are used to connect with the common pads 100 for shorting. When K supply circuit are connected to the input circuit or the output circuit 600 in parallel and each supply circuit needs to be short-circuited, the power supply circuit of the embodiment of the application can be used for short-circuiting each functional pad 110 and the common pad 100 which are arranged side by side through one short-circuiting operation procedure so as to finish short-circuiting a plurality of supply circuits.

Referring to fig. 5, it may be understood that the power supply circuit of the embodiment of the present application may include a first power supply circuit 200 and a second power supply circuit 300. The pad shorting structure of the embodiment of the present application may be set to a three-pad shorting structure J1. The three-pad shorting structure J1 includes a common pad 100 and two functional pads 110, specifically, the two functional pads 110 are respectively provided as a first functional pad 111 and a second functional pad 112; the common pad 100 is disposed adjacent to the first and second functional pads 111 and 112, respectively, the common pad 100 is used for grounding, and the first and second functional pads 111 and 112 are used for connecting with the common pad 100 for shorting. Specifically, the first power supply circuit 200 is connected to the first functional pad 111, the second power supply circuit 300 is connected to the second functional pad 112, and the first power supply circuit 200 and the second power supply circuit 300 are also connected to the input circuit (not shown) or the output circuit 600 in parallel. The purpose of setting up like this is that can be connected first function pad 111, second function pad 112 with public pad 100 respectively through welding once to make first power supply circuit 200 and second power supply circuit 300 realize the short circuit, the operating is simple, and has effectively improved product production efficiency. In addition, when product maintenance is carried out, compared with the condition that multiple steps are required to search and break the pad short-circuit point in each pad short-circuit structure in the related art, the method and the device can directly break the connection between two functional pads 110 (namely the first functional pad 111 and the second functional pad 112) in the pad short-circuit structure and the common pad 100, so that the short circuit between the first power supply circuit 200 and the second power supply circuit 300 is broken, the product is maintained, the product is prevented from being damaged due to the short circuit, and the operation procedures are effectively saved.

Referring to fig. 5, in some embodiments, the common pad 100 and the first and second functional pads 111 and 112 are arranged side by side and alternately disposed, and the common pad 100 is disposed between the first and second functional pads 111 and 112. The purpose of this arrangement is, on the one hand, to short-circuit the first power supply circuit 200 (or the second power supply circuit 300) only by directly short-circuiting the first functional pad 111 (or the second functional pad 112 connected to the second power supply circuit 300) connected to the first power supply circuit 200 and the common pad 100 disposed adjacent thereto when only the first power supply circuit 200 (or the second power supply circuit 300) needs to be short-circuited, and the operation process is simple. On the other hand, when both the first power supply circuit 200 and the second power supply circuit 300 need to be shorted, the first functional pad 111, the common pad 100, and the second functional pad 112 in the pad shorting structure can be directly connected through one shorting operation, so that the first power supply circuit 200 and the second power supply circuit 300 are shorted. Compared with the mode that two operation procedures are needed to respectively carry out short circuit on the pad short-circuit points of the two power supply circuits in the prior art, the short-circuit operation procedure of the technical scheme is simple and convenient, one short-circuit operation procedure is saved, and the production efficiency of products is effectively improved.

Referring to fig. 6, it can be understood that the first power supply circuit 200 is a battery power supply circuit 210, and the second power supply circuit 300 is a farad capacitor power supply circuit 310. That is, the battery supply circuit 210 is connected to the first functional pad 111, and the farad capacitor supply circuit 310 is connected to the second functional pad 112. In some embodiments, battery supply circuit 210 and pull-capacitor supply circuit 310 are also connected in parallel to output circuit 600, while common pad 100 is used for ground. Different types of power supply circuits can be set according to product requirements, the embodiment of the present application adopts two types, namely, the battery power supply circuit 210 and the pull-capacitance power supply circuit 310, and in other embodiments, other types of power supply circuits can also be adopted, which are not limited to this implementation and are not described herein again.

It is understood that the battery supply circuit 210 includes a first battery BAT1 and a first diode D1, the anode of the first battery BAT1 is connected to the anode of the first diode D1, the cathode of the first battery BAT1 is connected to the first function pad 111, the cathode of the first diode D1 and the faraday capacitor supply circuit 310 are connected in parallel to the input circuit or the output circuit 600, and the faraday capacitor supply circuit 310 is connected to the second function pad 112. In the embodiment of the present application, the first battery BAT1 is specifically used as a power supply, and the battery power supply circuit 210 is configured to supply power.

It is understood that the farad capacitor supply circuit 310 includes a first farad capacitor E1 and a second diode D2, the anode of the first farad capacitor E1 is connected to the anode of the second diode D2, the cathode of the first farad capacitor E1 is connected to the second functional pad 112, the cathode of the second diode D2 is connected in parallel with the battery supply circuit 210 to the input or output circuit 600, and the battery supply circuit 210 is connected to the first functional pad 111. The embodiment of the application specifically adopts the first farad capacitor E1 as a power supply, and the farad capacitor power supply circuit 310 is arranged for supplying power.

In some embodiments, the battery supply circuit 210 and the farad capacitor supply circuit 310 may be provided in parallel to the output circuit 600 when the common pad 100 is used for ground.

Specifically, as shown in fig. 6, the battery power supply circuit 210 includes a first battery BAT1 and a first diode D1; the farad capacitor power supply circuit 310 includes a first farad capacitor E1 and a second diode D2; the anode of the first battery BAT1 is connected to the anode of the first diode D1, the anode of the first farad capacitor E1 is connected to the anode of the second diode D2, and the cathode of the first diode D1 and the cathode of the second diode D2 are connected in parallel to the output circuit 600; the cathode of the first battery BAT1 is connected to the first functional pad 111, and the cathode of the first farad capacitor E1 is connected to the second functional pad 112; the common pad 100 and the first and second functional pads 111 and 112 are arranged side by side, and the common pad 100 is arranged between the first and second functional pads 111 and 112; the common pad 100 is grounded, and the first and second functional pads 111 and 112 are respectively used to connect to the common pad 100 for shorting.

As shown in fig. 6, it is understood that the power supply circuit further includes a fourth resistor R4 and a fifth resistor R5, one end of the fourth resistor R4 is grounded through the fifth resistor R5, and the other end of the fourth resistor R4 is connected between the anode of the first battery BAT1 and the anode of the first diode D1.

It is understood that the power circuit further includes a voltage stabilizing circuit 500; the battery power supply circuit 210 and the farad capacitor power supply circuit 310 are connected in parallel and then connected to the output circuit 600 through the voltage stabilizing circuit 500. In some embodiments, the common pad 100 is grounded.

Referring to fig. 7, the power circuit further includes a stabilizing circuit 500, the stabilizing circuit 500 being configured to maintain the output voltage substantially constant even when the input voltage fluctuates or the load changes. The voltage stabilizing circuit 500 comprises a voltage stabilizing chip U1, a first capacitor C1, a second capacitor C2 and a second farad capacitor E2, wherein an input end Vin of the voltage stabilizing chip U1 is connected between a cathode of a second diode D2 and a cathode of a first diode D1 through a third resistor R3, the input end Vin of the voltage stabilizing chip U1 is further connected with one end of a first capacitor C1, and the other end of the first capacitor C1 is grounded; the ground terminal VSS of the voltage regulation chip U1 is grounded, and the output terminal Vout of the voltage regulation chip U1 is connected to the output circuit 600; the second power source VCC is connected between the output terminal Vout of the regulator chip U1 and the output circuit 600; one end of a second farad capacitor E2 is connected between the output end Vout of the voltage stabilizing chip U1 and a second power supply VCC, and the other end of the second farad capacitor E2 is grounded; one end of the second capacitor C2 is connected between one end of the second farad capacitor E2 and the second power VCC, and the other end of the second capacitor C2 is grounded.

Referring to fig. 7, it can be understood that the power supply circuit may further include a rectifier circuit 400. The rectifier circuit 400 includes a common anode diode D3, a first resistor R1, and a second resistor R2. The common anode diode D3 is driven at low level, so that the current consumption is small, and the power efficiency is not affected, thereby reducing the consumption of useless power. Specifically, the anode of the common anode diode D3 is connected to the first power supply, the first cathode of the common anode diode D3 is connected to one end of a first resistor R1, the other end of the first resistor R1 is connected between the anode of the first farad capacitor E1 and the anode of the second diode D2, and the second resistor R2 is connected in parallel to the first resistor R1; the second cathode of the common anode diode D3 is connected between the cathode of the second diode D2 and the cathode of the first diode D1 through a third resistor R3.

It is understood that TP1, TP2, and TP3 are all test ports.

An embodiment of a third aspect of the present application provides a smart meter, including the power supply circuit according to the embodiment of the second aspect of the present application.

In some embodiments, a smart meter includes a pad shorting structure and a power circuit; the pad shorting structure comprises at least one common pad 100 and at least two functional pads 110, wherein the common pad 100 is used for grounding; the functional pad 110 is disposed adjacent to the common pad 100, and the functional pad 110 is used for connecting with the common pad 100 for short-circuiting; the power supply circuit comprises at least two power supply circuits, each power supply circuit is respectively connected with each corresponding functional bonding pad 110, and the power supply circuits are in one-to-one correspondence with the functional bonding pads 110; each power supply circuit is connected to the output circuit 600 by parallel.

In some embodiments, each of the power supply circuits is connected in parallel to an input terminal of the stabilizing circuit 500, and an output terminal of the stabilizing circuit 500 is connected to the output circuit 600.

In some embodiments, the functional pads 110 and the common pads 100 may be arranged side by side and alternately arranged.

It can be understood that the smart meter of the embodiment of the application comprises the pad short-circuit structure and the power circuit. The power supply circuit may include a plurality of power supply circuits such as the battery power supply circuit 210 and the pull-capacitance power supply circuit 310, and a common connection point is provided between each power supply circuit, that is, after each power supply circuit is connected in parallel to realize converging connection, a voltage is output to the output circuit 600 together, so that power can be provided for other devices in the smart meter. It can be understood that, in a certain link of the production process, the battery power supply circuit 210 and the farad capacitor power supply circuit 310 need to operate without electricity, and the purpose is to protect devices in the power supply circuit, that is, the battery power supply circuit 210 and the farad capacitor power supply circuit 310 need to be disconnected at this time, so that the battery power supply circuit 210 and the farad capacitor power supply circuit 310 do not have electricity; and after the PCBA detection is finished and when the PCBA detection is arranged in a rear loading station, the short-circuit operation needs to be carried out on the pad short-circuit structure.

According to the embodiment of the application, the short circuit of at least two power supply circuits can be completed through one short circuit operation procedure, compared with the prior art, N-1 short circuit operation procedures are saved, and the production efficiency of products is effectively improved; and when maintaining smart electric meter, this application can directly break off being connected between each function pad 110 in this pad short circuit structure and public pad 100 to realize breaking the short circuit between a plurality of power supply circuit, so that maintain smart electric meter, and thus prevent the short circuit of circuit and damage smart electric meter.

In addition, since the smart meter according to the embodiment of the present application is provided with the power supply circuit according to the embodiment of the second aspect, the smart meter has the beneficial effects and functional characteristics brought by any one of the power supply circuits.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "specifically," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and alterations to these embodiments may be made without departing from the principles and spirit of this application, and are intended to be included within the scope of this application.

Claims (10)

1. A pad shorting structure, comprising:

at least one common pad for connecting a voltage or ground;

the functional pads are arranged adjacent to the common pad and used for being connected with the common pad to carry out short circuit; each functional bonding pad is respectively used for being connected with each corresponding power supply circuit, the functional bonding pads correspond to the power supply circuits one by one, and each power supply circuit is connected to the input circuit or the output circuit in parallel.

2. The pad shorting structure according to claim 1, wherein the common pad is arranged side-by-side with the functional pad.

3. The pad shorting structure according to claim 2, wherein the common pads are alternately disposed with the functional pads, and the common pads are disposed between the functional pads.

4. A power supply circuit, comprising:

a pad shorting structure as claimed in any one of claims 1 to 3;

the power supply circuits are respectively connected with the corresponding functional bonding pads, and the power supply circuits are in one-to-one correspondence with the functional bonding pads; each of the power supply circuits is connected in parallel to either the input circuit or the output circuit.

5. The power supply circuit according to claim 4, wherein the power supply circuit includes a first power supply circuit and a second power supply circuit; the pad short circuit structure comprises a common pad, a first functional pad and a second functional pad, wherein the common pad is respectively arranged adjacent to the first functional pad and the second functional pad, and the first functional pad and the second functional pad are respectively used for being connected with the common pad for short circuit; the first power supply circuit is connected to the first functional pad, and the second power supply circuit is connected to the second functional pad.

6. The power supply circuit of claim 5, wherein the first power supply circuit is a battery power supply circuit and the second power supply circuit is a farad capacitor power supply circuit.

7. The power supply circuit of claim 6, wherein the battery supply circuit comprises a first battery and a first diode, wherein an anode of the first battery is connected to an anode of the first diode, a cathode of the first battery is connected to the first functional pad, and a cathode of the first diode and the farad capacitor supply circuit are connected in parallel to an input circuit or an output circuit.

8. The power supply circuit of claim 6, wherein the farad capacitor supply circuit comprises a first farad capacitor and a second diode, wherein an anode of the first farad capacitor is connected to an anode of the second diode, a cathode of the first farad capacitor is connected to the second functional pad, and a cathode of the second diode is connected in parallel with the battery supply circuit to the input circuit or the output circuit.

9. The power supply circuit according to any one of claims 6 to 8, characterized in that the power supply circuit further comprises a voltage stabilizing circuit; the battery power supply circuit and the farad capacitor power supply circuit are connected in parallel and then are connected to the output circuit through the voltage stabilizing circuit.

10. A smart meter, comprising: a power supply circuit as claimed in any one of claims 4 to 9.

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