Voltage classifier

Abstract

The utility model relates to the technical field of voltage detection, in particular to a voltage classifier, which is characterized in that a first output end of a control chip is connected with a control end of a first display branch, and a second output end of the control chip is connected with a control end of a second display branch. The control chip can control the first display branch circuit and the second display branch circuit to display the voltage of the tested battery cell according to the received test voltage, the voltage of the tested battery cell can be measured without complex operation, the detection efficiency is improved, and the operation complexity of the test equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage detection, in particular to a voltage sorter. Background Art

[0002] With the development and progress of society, people are coming into contact with batteries more and more frequently. For example, the lithium battery that everyone is familiar with consists of a protection board and battery cells. Before the battery cells are assembled into a PACK, we need to test the voltage of each battery cell to detect whether the voltage of each battery cell is within the preset range, but the existing testing equipment is complicated to operate and has low efficiency. Summary of the invention

[0003] The embodiment of the utility model provides a voltage sorter to solve the problems of complex operation and low efficiency of testing equipment in the prior art.

[0004] In a first aspect, the utility model provides a voltage selector, including: a voltage selector, characterized in that it includes: a control chip, a first display branch and a second display branch; wherein,

[0005] The input end of the control chip is used to receive a test voltage, the first output end of the control chip is connected to the control end of the first display branch, the input end of the first display branch is used to input a positive power supply signal, the output end of the first display branch is grounded, the second output end of the control chip is connected to the control end of the second display branch, the input end of the second display branch is used to input the positive power supply signal, and the output end of the second display branch is grounded;

[0006] The control chip is used to control the first display branch and the second display branch to display the voltage value of the test voltage according to the test voltage.

[0007] In one embodiment, the first display branch includes: a first switch tube and a first light emitting diode;

[0008] The control end of the first switch tube is connected to the first output end of the control chip, the input end of the first switch tube is connected to the positive power supply, the output end of the first switch tube is connected to the input end of the first light-emitting diode, and the output end of the first light-emitting diode is grounded.

[0009] In one implementation, the input end of the first switch tube is connected to the positive electrode of the cell under test.

[0010] In one embodiment, the first display branch further includes: a first buffer resistor;

[0011] The input end of the first buffer resistor is connected to the positive power supply, and the output end of the first buffer resistor is connected to the input end of the first switch tube.

[0012] In one implementation, the first switch tube is a MOS tube.

[0013] In one embodiment, the second display branch includes: a second switch tube and a second light emitting diode;

[0014] The control end of the second switch tube is connected to the second output end of the control chip, the input end of the second switch tube is connected to the positive power supply, the output end of the second switch tube is connected to the input end of the second light-emitting diode, and the output end of the second light-emitting diode is grounded.

[0015] In one implementation, the input end of the second switch tube is connected to the positive electrode of the cell under test.

[0016] In one embodiment, the second display branch further includes: a second buffer resistor;

[0017] The input end of the second buffer resistor is connected to the positive power supply, and the output end of the second buffer resistor is connected to the input end of the second switch tube.

[0018] In one implementation, the second switch tube is a MOS tube.

[0019] In one embodiment, the voltage selector further comprises: a third buffer resistor;

[0020] The input end of the third buffer resistor is used to receive the test voltage, and the output end of the third buffer resistor is connected to the input end of the control chip.

[0021] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0022] The voltage sorter of the utility model connects the first output end of the control chip with the control end of the first display branch, and connects the second output end of the control chip with the control end of the second display branch, so that the control chip can control the first display branch and the second display branch to display the voltage of the tested battery cell according to the test voltage received. The voltage of the tested battery cell can be measured without complicated operation, thereby improving the detection efficiency and reducing the operation complexity of the test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of a voltage separator provided by an embodiment of the utility model;

[0025] Figure 2 is another circuit diagram of a voltage sorter provided by an embodiment of the utility model;

[0026] Among them, 100 is a voltage selector, 10 is a first display branch, and 20 is a second display branch. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0031] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0032] In one embodiment, if Figure 1 As shown, a schematic diagram of a voltage selector 100 is provided, comprising: a control chip U1, a first display branch 10 and a second display branch 20; wherein:

[0033] The input end of the control chip U1 is used to receive the test voltage, the first output end of the control chip U1 is connected to the control end of the first display branch 10, the input end of the first display branch 10 is used to input the positive power supply signal, the output end of the first display branch 10 is grounded, the second output end of the control chip U1 is connected to the control end of the second display branch 20, the input end of the second display branch 20 is used to input the positive power supply signal, and the output end of the second display branch 20 is grounded;

[0034] The control chip U1 is used for controlling the first display branch 10 and the second display branch 20 to display the voltage value of the test voltage according to the test voltage.

[0035] Specifically, the control chip U1 can use a lithium battery protection IC to achieve the corresponding function. The actual application is not limited to this, and it depends on the specific application environment, which is within the protection scope of this application.

[0036] The working process of the above-mentioned voltage selector 100 is as follows: when the voltage selector 100 is working, the input end of the control chip U1 receives the test voltage of the tested battery cell, and outputs a corresponding first control signal to the input end of the first display branch 10 and a second control signal to the input end of the second display branch 20 according to the test voltage, so as to control the first display branch 10 and the second display branch 20 to display the voltage range of the tested battery cell.

[0037] The voltage selector 100 of this embodiment connects the first output end of the control chip U1 to the control end of the first display branch 10, and connects the second output end of the control chip U1 to the control end of the second display branch 20, so that the control chip U1 can control the first display branch 10 and the second display branch 20 to display the voltage of the tested battery cell according to the test voltage it receives. The voltage of the tested battery cell can be measured without complicated operations, thereby improving the detection efficiency and reducing the operation complexity of the test equipment.

[0038] In one embodiment, the first display branch 10 can be as follows Figure 2 As shown, it includes: a first switch tube Q1 and a first light emitting diode LED1; wherein:

[0039] The control end of the first switch tube Q1 is connected to the first output end of the control chip U1, the input end of the first switch tube Q1 is connected to the positive power supply, the output end of the first switch tube Q1 is connected to the input end of the first light-emitting diode LED1, and the output end of the first light-emitting diode LED1 is grounded.

[0040] Specifically, Figure 2 As shown, the first switch tube Q1 can be a MOS tube, and the first light-emitting diode LED1 can be a red light-emitting diode; optionally, as Figure 2 As shown, the input end of the first switch tube Q1 can also be connected to the positive electrode of the cell under test to receive the positive power output by the cell under test, so that the first display branch 10 can be powered by the cell under test without an additional power supply when working, thereby reducing the manufacturing cost of the voltage sorter 100. The actual application is not limited to this, and it can be determined according to the specific application environment, which is within the protection scope of this application.

[0041] The working process of the above-mentioned voltage selector 100 is as follows: when the voltage selector 100 is working, the input end of the control chip U1 receives the test voltage of the battery cell under test, and outputs a corresponding first control signal to the control end of the first switch tube Q1 according to the test voltage, so as to control the on and off of the first light-emitting diode LED1 by controlling the closing and opening of the first switch tube Q1, and then display the voltage range of the battery cell under test by the on and off of the first light-emitting diode LED1.

[0042] In the voltage sorter 100 of the present embodiment, the first display branch 10 includes a first switch tube Q1 and a first light-emitting diode LED1. The control chip U1 can control the on and off of the first light-emitting diode LED1 by controlling the turn-off of the first switch tube Q1. Thus, the voltage range of the tested battery cell can be displayed by controlling the on and off of the first light-emitting diode LED1 without complicated operations, thereby improving the detection efficiency and reducing the operation complexity of the test equipment.

[0043] In one embodiment, the first display branch 10 can be as follows Figure 2 As shown, it also includes: a first buffer resistor R1; wherein the input end of the first buffer resistor R1 is connected to the positive power supply, and the output end of the first buffer resistor R1 is connected to the input end of the first switch tube Q1.

[0044] The working process of the above-mentioned voltage selector 100 is as follows: when the voltage selector 100 is working, when the first output end of the control chip U1 outputs a conduction signal to the first switch tube Q1 to control the first switch tube Q1 to be turned on, at this time, the input end of the first switch tube Q1 receives the positive power supply through the first buffer resistor R1, and inputs the positive power supply to the input end of the first diode to control the first diode to display the voltage range of the measured battery cell.

[0045] The voltage selector 100 of this embodiment uses the first buffer resistor R1 to buffer the positive power supply input to the first switch tube Q1 and the first diode, so as to avoid the positive power supply being too high and causing impact on the first switch tube Q1 and the first diode, thereby damaging the first switch tube Q1 and the first diode, thereby improving the safety and reliability of the voltage selector 100.

[0046] In one embodiment, the second display branch 20 can be as follows Figure 2 As shown, it includes: a second switch tube Q2 and a second light emitting diode LED2; wherein:

[0047] The control end of the second switch tube Q2 is connected to the second output end of the control chip U1, the input end of the second switch tube Q2 is connected to the positive power supply, the output end of the second switch tube Q2 is connected to the input end of the second light-emitting diode LED2, and the output end of the second light-emitting diode LED2 is grounded.

[0048] Specifically, Figure 2 As shown, the second switch tube Q2 can be a MOS tube, and the second light-emitting diode LED2 can be a green light-emitting diode; optionally, as Figure 2 As shown, the input end of the second switch tube Q2 can also be connected to the positive electrode of the tested cell to receive the positive power output by the tested cell, so that the second display branch 20 can be powered by the tested cell without an additional power supply when working, thereby reducing the manufacturing cost of the voltage sorter 100. The actual application is not limited to this, and it depends on the specific application environment, which is within the protection scope of this application.

[0049] The working process of the above-mentioned voltage selector 100 is as follows: when the voltage selector 100 is working, the input end of the control chip U1 receives the test voltage of the battery cell under test, and outputs a corresponding second control signal to the control end of the second switch tube Q2 according to the test voltage, so as to control the on and off of the second light-emitting diode LED2 by controlling the closing and opening of the second switch tube Q2, and then display the voltage range of the battery cell under test by the on and off of the second light-emitting diode LED2.

[0050] In the voltage sorter 100 of the present embodiment, the second display branch 20 includes a second switch tube Q2 and a second light emitting diode LED2. The control chip U1 can control the on and off of the second light emitting diode LED2 by controlling the turn-off of the second switch tube Q2. Thus, the voltage range of the tested battery cell can be displayed by controlling the on and off of the second light emitting diode LED2 without complicated operations, thereby improving the detection efficiency and reducing the operation complexity of the test equipment.

[0051] In one embodiment, the first display branch 10 can be as follows Figure 2 As shown, it also includes: a second buffer resistor R2; wherein the input end of the second buffer resistor R2 is connected to the positive power supply, and the output end of the second buffer resistor R2 is connected to the input end of the second switch tube Q2.

[0052] The working process of the above-mentioned voltage selector 100 is: when the voltage selector 100 is working, when the second output end of the control chip U1 outputs a conduction signal to the second switch tube Q2 to control the second switch tube Q2 to be turned on, at this time, the input end of the second switch tube Q2 receives the positive power supply through the second buffer resistor R2, and inputs the positive power supply to the input end of the second diode to control the second diode to display the voltage range of the measured battery cell.

[0053] The voltage selector 100 of this embodiment uses the second buffer resistor R2 to buffer the positive power supply input to the second switch tube Q2 and the second diode, so as to avoid the positive power supply being too high and causing impact on the second switch tube Q2 and the second diode, thereby damaging the second switch tube Q2 and the second diode, thereby improving the safety and reliability of the voltage selector 100.

[0054] In one embodiment, if Figure 2 As shown, the voltage selector 100 further includes a third buffer resistor R3; wherein the input end of the third buffer resistor R3 is used to receive the test voltage, and the output end of the third buffer resistor R3 is connected to the input end of the control chip U1.

[0055] The voltage selector 100 of this embodiment uses the third buffer resistor R3 to buffer the test voltage input to the control chip U1 to prevent the test voltage from being too high and causing impact on the control chip U1 and damaging the control chip U1, thereby improving the safety and reliability of the voltage selector 100.

[0056] In practical applications, see Figure 2When the voltage selector 100 is working, the input end of the control chip U1 receives the test voltage of the tested cell, and outputs a corresponding first control signal to the first switch tube Q1 in the first display branch 10 and a second control signal to the second switch tube Q2 in the second display branch 20 according to the test voltage, so as to control the first light-emitting diode LED1 and the second light-emitting diode LED2 to display the voltage range of the tested cell; and as Figure 2 As shown, the control chip U1 can also be connected to an external circuit (not shown here) through an external resistor R4 to achieve corresponding functions. The actual application is not limited to this and depends on the specific application environment, which is within the protection scope of this application.

[0057] Specifically, the voltage range can be whether the voltage of the tested battery cell is between 3.7V and 3.8V. When the control chip U1 detects that the test voltage output by the tested battery cell is between 3.7V and 3.8V, the voltage of the tested battery cell is normal. The control chip U1 can control the first light-emitting diode LED1 on the first display branch 10 to emit red light, and control the second light-emitting diode LED2 on the second display branch 20 to emit green light. When the test voltage output by the tested battery cell is lower than 3.7V, it is equivalent to the over-discharge protection of the battery. The control chip U1 can control the first light-emitting diode LED1 on the first display branch 10 to emit red light, and control the second light-emitting diode LED2 on the second display branch 20 to emit green light. A light emitting diode LED1 emits red light, and controls the second light emitting diode LED2 on the second display branch 20 not to emit light; when the test voltage output by the tested battery cell is higher than 3.8V, which is equivalent to the battery being overcharged, the control chip U1 can control the first light emitting diode LED1 on the first display branch 10 not to emit light, and control the second light emitting diode LED on the second display branch 20 to emit green light, so that the user can observe the on and off and color of the first light emitting diode LED1 and the second light emitting diode LED2, and intuitively and clearly judge the state of the tested battery cell, thereby improving the user experience.

[0058] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A voltage selector, characterized in that: include: A control chip, a first display branch and a second display branch; wherein, The input end of the control chip is used to receive a test voltage, the first output end of the control chip is connected to the control end of the first display branch, the input end of the first display branch is used to input a positive power supply signal, the output end of the first display branch is grounded, the second output end of the control chip is connected to the control end of the second display branch, the input end of the second display branch is used to input the positive power supply signal, and the output end of the second display branch is grounded; The control chip is used to control the first display branch and the second display branch to display the voltage value of the test voltage according to the test voltage.

2. The voltage selector according to claim 1, characterized in that: The first display branch includes: a first switch tube and a first light emitting diode; The control end of the first switch tube is connected to the first output end of the control chip, the input end of the first switch tube is connected to the positive power supply, the output end of the first switch tube is connected to the input end of the first light-emitting diode, and the output end of the first light-emitting diode is grounded.

3. The voltage selector according to claim 2, characterized in that: The input end of the first switch tube is connected to the positive electrode of the cell under test.

4. The voltage selector according to claim 2, characterized in that: The first display branch further includes: a first buffer resistor; The input end of the first buffer resistor is connected to the positive power supply, and the output end of the first buffer resistor is connected to the input end of the first switch tube.

5. The voltage selector according to claim 2, characterized in that: The first switch tube is a MOS tube.

6. The voltage selector according to claim 1, characterized in that: The second display branch includes: a second switch tube and a second light emitting diode; The control end of the second switch tube is connected to the second output end of the control chip, the input end of the second switch tube is connected to the positive power supply, the output end of the second switch tube is connected to the input end of the second light-emitting diode, and the output end of the second light-emitting diode is grounded.

7. The voltage selector according to claim 6, characterized in that: The input end of the second switch tube is connected to the positive electrode of the cell under test.

8. The voltage selector according to claim 6, characterized in that: The second display branch further includes: a second buffer resistor; The input end of the second buffer resistor is connected to the positive power supply, and the output end of the second buffer resistor is connected to the input end of the second switch tube.

9. The voltage selector according to claim 6, characterized in that: The second switch tube is a MOS tube.

10. The voltage selector according to claim 1, characterized in that: The voltage selector further includes: a third buffer resistor; The input end of the third buffer resistor is used to receive the test voltage, and the output end of the third buffer resistor is connected to the input end of the control chip.

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