Disclosure of Invention
In order to solve the technical problems, the utility model provides a voltage measurement system of a button cell, which can solve the problems that manual operation test is not fast and false detection is easy to occur when the button cell welded on a substrate is tested, so as to achieve the effect of fast and high-efficiency voltage measurement of the substrate cell.
The utility model provides a voltage measurement system of a button cell, comprising:
a substrate and a voltage measuring device;
the substrate is provided with a plurality of test points which are respectively connected with the electrode of the button cell arranged on the substrate and the electrode of the sampling resistor arranged on the substrate;
the voltage measuring device comprises a needle bed and a voltage measuring instrument;
the needle bed is provided with a plurality of test needles, the number of the test needles is consistent with that of the test points, the positions of the test needles correspond to those of the test points, and the test needles are connected with the voltage measuring instrument.
Further, the test points comprise a first test point, a second test point, a third test point and a fourth test point, and the button cells comprise a first button cell and a second button cell;
the first test point is connected with the positive electrode of the first button cell, the second test point is connected with the positive electrode of the second button cell, the third test point is connected with one end of the sampling resistor, which is far away from the button cell, and the fourth test point is connected with the ground wire on the substrate.
Further, the test needles comprise a first test needle, a second test needle, a third test needle and a fourth test needle;
the position of the first test needle corresponds to the position of the first test point, the position of the second test needle corresponds to the position of the second test point, the position of the third test needle corresponds to the position of the third test point, and the position of the fourth test needle corresponds to the position of the fourth test point.
Further, the voltage measuring instrument comprises a first voltage measuring instrument, a second voltage measuring instrument and a third voltage measuring instrument;
the first voltage measuring instrument is respectively connected with the first test needle and the fourth test needle, the second voltage measuring instrument is respectively connected with the second test needle and the fourth test needle, and the third voltage measuring instrument is respectively connected with the second test needle and the third test needle.
Further, the test point is connected with the electrode of the button cell and the electrode of the sampling resistor through a copper foil.
Further, the first button cell and the second button cell are connected in parallel, and are connected in series with the sampling resistor after being connected in parallel.
The utility model provides a voltage measurement system of a button cell, which is used for measuring the voltage of the button cell on a substrate, rapidly measuring the static voltage on the substrate and accurately estimating the current according to the static voltage, so that the welding condition and the battery capacity of the battery on the substrate can be rapidly judged, the test efficiency and the test effect can be improved, and the product quality and the production efficiency of the substrate are further improved.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the production of the substrate, the button cell is used as a necessary power supply device, and the button cell is required to provide electric energy required by a CPU (Central processing Unit) retention program and a timer under the condition that the substrate is not externally powered. When the button cell is in cold joint or insufficient in electric energy, the pre-installation program of the machine is lost, the time timer is reset to zero, the normal use of the machine is seriously affected, and even the user data is lost, so that the power supply state of the button cell on the substrate is required to be tested, and the normal work in the use process is ensured.
At present, a conventional battery test generally adopts a manual operation mode, a universal meter is required to be used for measuring the voltage of a battery, and then the voltage of a sampling resistor connected with the battery in series is measured to calculate the quiescent current of the battery, so that the manual mode is low in efficiency and easy to miss-test, meanwhile, the manual mode is easy to cause the problems of low accuracy of measured values and the like caused by improper contact of contacts, the quality of a product of a substrate is affected, and in order to solve the problem, the utility model provides a system capable of measuring the voltage of a button battery quickly and efficiently.
Referring to fig. 1, a voltage measurement system of a button cell according to an embodiment of the present utility model includes: the utility model provides a substrate 1 and a voltage measuring device 2, wherein button cells to be measured are arranged on the substrate 1, sampling resistors connected with the button cells in series are arranged on the substrate 1, and in order to accurately and efficiently measure the voltage of the button cells and the voltage of a sampling resistor, a plurality of test points 11 are arranged on the substrate 1, the test points 11 are respectively connected with electrodes of the button cells and electrodes of the sampling resistor, the button cells for supplying power on the substrate 1 are generally provided with two button cells, the two button cells are different in overall dimension and different in battery capacity but identical in voltage, the two button cells are connected in parallel, the sampling resistor is connected with the two button cells connected in series after being connected in parallel, therefore, the utility model provides a preferred embodiment, in which the first test point 111 is connected with the positive electrode of the first button cell, the second test point 112 is connected with the positive electrode of the second button cell, the third test point 113 is connected with one end of the sampling resistor, which is far away from the button cells, the electrical signal test point of the sampling resistor is connected with the fourth test point, the two button cells are connected with the two ends of the button cells, the voltage can be further measured through the copper foil 11, and the voltage can be further measured by the connection between the two ends of the button cells and the substrate 11 and the actual measuring device can be realized through the fact that the two ends of the button cells are connected with the two ends 11 through the substrate 11, and the voltage can be further connected with the edge of the electrode 11, and the measuring device can be further connected with the end between the two ends of the button cells through the sample 11 and the sample device. That is, the present utility model improves the efficiency of cell voltage measurement by adding the test point 11 on the substrate 1 and guiding the button cell end to the place where the edge of the substrate 1 is easy to measure.
Through the design of the test point 11, the electrode of the button cell is actually led out, the test point 11 is used as a measured contact point, the voltage measuring equipment is convenient to measure the voltage through the connecting contact point, in order to further improve the measuring efficiency and effect, the utility model correspondingly designs the voltage measuring device 2 aiming at the test point 11 on the substrate 1, the voltage measuring device 2 comprises a needle bed 21 and a voltage measuring instrument 22, wherein a plurality of test needles 211 are arranged on the needle bed 21, the number of the test needles 211 is consistent with that of the test point 11, and the positions of the test needles 211 and the positions of the test points 11 are in one-to-one correspondence, under the design, the adaptation connection between the test needles 211 and the test point 11 can be realized only by correspondingly placing the substrate 1 on the needle bed 21, and then the connection between the needle bed 21 and the button cell and the sampling resistor is realized. The connection modes of the utility model not only can realize the rapid and efficient connection between the substrate to be measured and the measuring equipment, but also ensure that the contacts have good contact effect, thereby ensuring the accuracy of the measuring result.
Since 4 test points 11 are provided in the above embodiment, in a preferred embodiment, 4 test pins 211 are provided correspondingly, namely, a first test pin, a second test pin, a third test pin and a fourth test pin, wherein the position of the first test pin corresponds to the position of the first test point, the position of the second test pin corresponds to the position of the second test point, the position of the third test pin corresponds to the position of the third test point, the position of the fourth test pin corresponds to the position of the fourth test point, and the test pin 211 is connected to the voltage measuring instrument 22.
Further, in order to improve the measurement efficiency and achieve the simultaneous measurement of the voltages and currents of the plurality of button cells, the present utility model also provides another preferred embodiment, in which the number of the voltage meters 22 is 3, namely, a first voltage meter, a second voltage meter and a third voltage meter, wherein the first voltage meter is connected with the first test pin and the fourth test pin, the second voltage meter is connected with the second test pin and the fourth test pin, the third voltage meter is connected with the second test pin and the third test pin, the first voltage meter can measure the voltage of the first button cell, the second voltage meter can measure the voltage of the second button cell, and the third voltage meter can measure the voltage of the sampling resistor, and since the sampling resistor is connected in series with the power supply cell, the static current provided by the button cell can be directly calculated through the voltage of the sampling resistor. In this embodiment, the voltage measuring apparatuses 22 are configured to measure voltages of a plurality of button cells simultaneously, and quiescent currents of a plurality of button cells can be obtained simultaneously, so that efficiency of measuring voltages of the button cells and efficiency of measuring currents are improved, and product quality and production efficiency of the substrate are further improved. It should be noted that, in the present embodiment, the number of the test points 11, the test pins 211 and the voltage measuring device 22 may be flexibly set according to the number of the button cells on the substrate 1, which is only a preferred embodiment provided herein, but not particularly limited thereto.
In the following, a plurality of test points 11 are provided on a substrate 1 on which a button cell to be measured is mounted, the test points 11 are connected to electrodes of the button cell and electrodes of sampling resistors through copper foils on the substrate 1, test pins 211 corresponding to the test points 11 in number and position are correspondingly provided on a needle bed 21 of a voltage measuring device 2, one end of each test pin 211 can be connected with the test points 11 in an adapting manner by placing the substrate 1 on the needle bed 21, the other end of each test pin 211 is connected with a plurality of voltage measuring instruments 22, the voltage of the button cell and the voltages of the sampling resistors can be measured simultaneously through the test pins 211 and the test points 11, and the measured result can be directly displayed through a display screen of each voltage measuring instrument 22, and meanwhile, the quiescent current provided by the button cell can be calculated through the voltages of the sampling resistors. The welding condition and the battery capacity of the button battery on the substrate can be judged through the voltage and the current, so that the product quality of the substrate is ensured.
In summary, the voltage measurement system of the button cell provided by the embodiment of the utility model comprises a substrate and a voltage measurement device; the substrate is provided with a plurality of test points which are respectively connected with the electrode of the button cell arranged on the substrate and the electrode of the sampling resistor arranged on the substrate; the voltage measuring device comprises a needle bed and a voltage measuring instrument; the needle bed is provided with a plurality of test needles, the number of the test needles is consistent with that of the test points, the positions of the test needles correspond to those of the test points, and the test needles are connected with the voltage measuring instrument. According to the utility model, the test point is added on the substrate, the battery end is led to the position at the edge of the substrate, which is convenient for the test needle to measure, the voltage of the button battery on the substrate is simply and efficiently measured through the needle bed and the voltage measuring instrument, and the power supply state of the button battery on the substrate can be judged through measuring and calculating the voltage and the current, so that the product quality and the production efficiency of the substrate are improved.
In this specification, each embodiment is described in a progressive manner, and all the embodiments are directly the same or similar parts referring to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments. It should be noted that, any combination of the technical features of the foregoing embodiments may be used, and for brevity, all of the possible combinations of the technical features of the foregoing embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples represent only a few preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and substitutions should also be considered to be within the scope of the present utility model. Therefore, the protection scope of the patent of the utility model is subject to the protection scope of the claims.