Power supply circuit for supplying power to sensor and battery

Abstract

The utility model discloses a power supply circuit and a battery for supplying power to a sensor, and the power supply circuit comprises a battery cover plate, a sensor, and a battery cathode. Wherein the sensor is connected between the battery cover plate and the negative electrode of the battery; the leakage current between the negative electrode of the battery and the battery cover plate is used for supplying power to the sensor. According to the utility model, the leakage current between the negative electrode of the battery and the battery cover plate can be used for supplying power to the sensor, that is, the sensor does not need to be additionally supplied with power through external power supply equipment, so that the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technical field especially, a kind of power supply circuit and battery for sensor power supply. BACKGROUND

[0002] In prior art, it is usually necessary to connect external power supply device to power sensor for detecting battery pressure and temperature, on the one hand, external power supply device leads to complex wiring in battery cover plate, on the other hand, additional power supply device is provided, and cost is higher. SUMMARY

[0003] To solve the above technical problems, the utility model provides a kind of power supply circuit and battery for sensor power supply, can be connected by the battery negative pole to the battery cover plate between, realize the leakage current between the battery negative pole to the battery cover plate is used to power the sensor, that is, without additional power supply equipment to power sensor, reduce cost.

[0004] In a first aspect, the utility model provides a kind of power supply circuit for sensor power supply, it is characterized in that, including:

[0005] Battery cover plate, sensor, battery negative pole;Wherein, the battery cover plate and battery negative pole between electric connection have the sensor.

[0006] In an alternative embodiment, the battery cover plate and battery negative pole between electric connection have the sensor, realize the leakage current between the battery negative pole to the battery cover plate is used to power the sensor.

[0007] In an alternative embodiment, the battery cover plate includes: first cover plate and second cover plate;Wherein, the first cover plate and the second cover plate are stacked and set;

[0008] The sensor is installed in the second cover plate, and the sensor and the negative pole lug in the battery negative pole are electrically connected by first flexible circuit board or first lead, and the sensor is also electrically connected with the first cover plate by second flexible circuit board or second lead;The negative pole lug is integrated on the second cover plate;

[0009] The battery cover plate is installed on battery main body, and the battery cover plate is connected with the battery main body by cover.

[0010] In an alternative embodiment, the GND port of the sensor and the negative pole lug are electrically connected by first flexible circuit board or first lead, and the VCC port of the sensor is also electrically connected with the first cover plate by second flexible circuit board or second lead, to realize the leakage current between the negative pole lug to first cover plate is used to power the sensor.

[0011] In an alternative embodiment, an inductor is further connected between the GND port of the sensor and the negative electrode.

[0012] In an alternative embodiment, the sensor is mounted in the second cover plate, specifically comprising:

[0013] The sensor is embedded in the second cover plate in a plastic package, or,

[0014] The sensor is mounted in the second cover plate in a snap-in manner.

[0015] In an alternative embodiment, the sensor is used to transmit the detected battery body temperature and battery body internal pressure data in real time to a battery management device through an antenna on the sensor in a wireless communication manner, the battery management device is used to determine whether the temperature and pressure data are abnormal in real time, if the data are abnormal, the battery management device is further used to give a warning and control to cut off the connection circuit of the battery body.

[0016] In an alternative embodiment, the material of the first cover plate is aluminum alloy, and the material of the second cover plate is plastic.

[0017] In a second aspect, the utility model provides a kind of battery, comprising: the power supply circuit for sensor power supply of first aspect and battery body.

[0018] The utility model discloses a kind of power supply circuit and battery for sensor power supply, wherein, power supply circuit includes: battery cover plate, sensor, battery negative pole;Wherein, the battery cover plate is connected with the sensor between battery negative pole;The leakage current between the battery negative pole to the battery cover plate is used to power the sensor.Power supply is realized by the leakage current between the battery negative pole to the battery cover plate in the utility model, i.e. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be simply introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 It is a kind of circuit schematic diagram of the power supply circuit for sensor power supply provided by the utility model;

[0021] Figure 2It is a connection structure schematic diagram for a sensor provided by the utility model.

[0022] Figure 3 It is a circuit schematic diagram of another power supply circuit for sensor power supply provided by the utility model.

[0023] Among them, 101-sensor, 102-battery cover plate, 1021-first cover plate, 1022-second cover plate, 103-battery negative pole, 1031-negative pole lug, 104-first wire, 105-second wire. Specific implementation

[0024] The technical solutions in the utility model will be clearly and completely described below in combination with the drawings in the utility model. Apparently, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] It should be explained that the first and second in the utility model are only used for distinguishing different components (such as cover plate, wire) and have no other meanings, which should not limit the protection scope of the utility model. Embodiment one

[0026] Figure 1 An exemplary circuit schematic diagram of a power supply circuit for sensor power supply is shown, as shown in the figure, the power supply circuit can include but is not limited to: Figure 1

[0027] Battery cover plate 102, sensor 101, battery negative pole 103; wherein the battery cover plate 102 and the battery negative pole 103 are electrically connected with the sensor 101; wherein the battery negative pole 103 can include but is not limited to: negative pole lug 1031 and negative pole material.

[0028] The leakage current between the battery negative pole 103 and the battery cover plate 102 can be used to supply power to the sensor 101 by electric connection.

[0029] Optionally, the battery cover plate 102 is also connected with the battery positive pole, thus the leakage current between the battery negative pole 103 and the battery cover plate 102 is used to supply power to the sensor 101, and the battery negative pole 103, the sensor 101, the battery cover plate 102, the battery positive pole, the circuit and the like constitute a power supply loop of the sensor 101.

[0030] More specifically, refer to Figure 2 ​The battery cover plate 102 comprises a first cover plate 1021 and a second cover plate 1022; wherein the first cover plate 1021 and the second cover plate 1022 are arranged in a stacked manner;

[0031] The sensor 101 is installed in the second cover plate 1022, and the sensor 101 is electrically connected with the negative tab 1031 in the battery negative electrode 103 through a first flexible circuit board or a first lead wire, and the sensor 101 is also electrically connected with the first cover plate 1021 through a second flexible circuit board or a second lead wire; the negative tab 1031 is integrated on the second cover plate 1022.

[0032] The battery cover plate 102 is installed on the battery body, and the battery cover plate 102 is connected with the battery body in a cover closing manner.

[0033] Optionally, the GND port of the sensor 101 and the negative tab 1031 are electrically connected through a first flexible circuit board or a first lead wire, and the VCC port of the sensor 101 is also electrically connected with the first cover plate 1021 through a second flexible circuit board or a second lead wire, so as to realize that the leakage current between the negative tab 1031 and the first battery cover plate 1021 supplies power to the sensor 101.

[0034] Referring to Figure 3 , another circuit schematic diagram of a power supply circuit for sensor power supply is exemplarily shown, the GND port of the sensor 101 and the negative tab 1031 are electrically connected through a first lead wire 104, and the VCC port of the sensor 101 is also electrically connected with the first cover plate 1021 through a second lead wire 105, so as to realize that the leakage current between the negative tab 1031 and the first battery cover plate 1021 supplies power to the sensor 101.

[0035] Optionally, the GND port of the sensor 101 and the negative tab 1031 can also be connected with an inductor, wherein the inductor can be used to store the energy between the GND port of the sensor 101 and the negative tab 1031, and optionally, the inductor can also be used for AC noise between the GND port of the sensor 101 and the negative tab 1031.

[0036] Optionally, the GND port of the sensor 101 and the negative tab 1031 can also be connected with a capacitor. Optionally, the GND port of the sensor 101 and the negative tab 1031 can also be connected with other energy storage devices.

[0037] Optionally, the sensor 101 is installed in the second cover plate 1022, and specifically can include but is not limited to the following modes:

[0038] Mode 1: The sensor 101 is embedded in the second cover plate 1022 in a plastic sealing manner, or,

[0039] Mode 2: the sensor 101 is installed in the second cover plate 1022 in a snap-fit manner; or,

[0040] Mode 3: the sensor 101 is installed in the second cover plate 1022 in a welding manner; or, the sensor 101 is installed in the second cover plate 1022 in an interference fit manner; or,

[0041] Mode 4: the sensor 101 is installed in the second cover plate 1022 in a screwing manner.

[0042] Optionally, the sensor 101 is used for:

[0043] detecting the battery body temperature and the battery body internal pressure data through the detection part of the sensor 101;

[0044] sending the detected battery body temperature and battery body internal pressure data to the battery management device in a real-time wireless communication manner through the antenna on the sensor 101, or sending the detected battery body temperature and battery body internal pressure data to the battery management device in a real-time wireless communication manner through the wireless communication module on the sensor 101.

[0045] The battery management device is used for judging whether the temperature and pressure data are abnormal in real time, and if the data are abnormal, the battery management device is further used for pre-warning and controlling to cut off the connection circuit of the battery body.

[0046] Specifically, the battery management device is specifically used for: in response to receiving the temperature and pressure data from the sensor 101, judging whether the temperature is within a first safety threshold range and judging whether the pressure is within a second safety threshold range in real time.

[0047] If the temperature is not within the first safety threshold range, it is judged that the temperature is abnormal, a first alarm information is output, and the connection circuit of the battery body is controlled to be cut off in a bypass manner; or,

[0048] If the pressure is not within the second safety threshold range, it is judged that the pressure is abnormal, a second alarm information is output, and the connection circuit of the battery body is controlled to be cut off in a bypass manner; the battery management device is specifically further used for: displaying the temperature and pressure data in real time.

[0049] It should be explained that after the battery management device obtains the temperature and pressure data of the battery from the sensor 101, the temperature and pressure of the battery can be monitored in real time, the present state of each index of the battery in the formation and capacity process can be observed, and the safety of the battery is improved.

[0050] The detection unit can include, but is not limited to, the following:

[0051] The first detection circuit includes one or more thermistors for detecting temperature data of the battery body, and the second detection circuit for detecting internal pressure data of the battery body.

[0052] The thermistors can include, but are not limited to, the following:

[0053] Optionally, the second detection circuit for detecting internal pressure data of the battery body includes any of the following:

[0054] The detection circuit for detecting internal pressure data of the battery body includes a strain resistance (such as a deformation resistance), a fiber optic pressure sensor circuit, a resistance strain pressure sensor circuit, and a capacitive pressure sensor circuit.

[0055] Optionally, the material of the first cover plate 1021 can include, but is not limited to, any of the following: aluminum alloy, aluminum, or other alloy materials, and the material of the second cover plate 1022 can be plastic. Embodiment Two

[0056] The utility model embodiment provides a kind of battery, the battery includes but is not limited to: the power supply circuit for sensor power supply in embodiment one, battery positive pole, battery negative pole 103 and battery body.

[0057] Figures 1-3 Only for the description of the utility model embodiment, should not limit the protection scope of the utility model.

[0058] The above is only optional embodiment of the utility model, and the patent range of the utility model is not limited by this, any equivalent structure transformation using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A power supply circuit for a sensor powered supply, characterized by, The battery cover plate (102), the sensor (101), and the battery negative electrode (103) are electrically connected.

2. The power supply circuit for sensor power supply according to claim 1, wherein the sensor (101) is electrically connected between the battery cover plate (102) and the battery negative electrode (103) to realize that the leakage current between the battery negative electrode (103) and the battery cover plate (102) supplies power to the sensor (101).

3. The power supply circuit for sensor power supply according to claim 2, wherein the battery cover plate (102) comprises a first cover plate (1021) and a second cover plate (1022), and the first cover plate (1021) and the second cover plate (1022) are arranged in a stack. The sensor (101) is installed in the second cover plate (1022), and the sensor is electrically connected to the negative electrode tab (1031) in the battery negative electrode (103) through a first flexible circuit board or a first lead wire (104), and the sensor (101) is also electrically connected to the first cover plate (1021) through a second flexible circuit board or a second lead wire (105). The negative electrode tab (1031) is integrated on the second cover plate (1022). The battery cover plate (102) is installed on the battery body, and the battery cover plate (102) is connected to the battery body in a cover combination.

4. The power supply circuit for sensor power supply according to claim 3, wherein the GND port of the sensor (101) is electrically connected to the negative electrode tab (1031) through the first flexible circuit board or the first lead wire (104), and the VCC port of the sensor (101) is also electrically connected to the first cover plate (1021) through the second flexible circuit board or the second lead wire (105) to realize that the leakage current between the negative electrode tab (1031) and the first cover plate (1021) supplies power to the sensor (101).

5. The power supply circuit for sensor power supply according to claim 4, wherein the GND port of the sensor (101) is also connected to the negative electrode tab (1031) through an inductor.

6. The power supply circuit for sensor power supply according to claim 3, wherein the sensor (101) is installed in the second cover plate (1022), and specifically comprises: The sensor (101) is embedded in the second cover plate (1022) in a plastic sealing manner, or The sensor (101) is installed in the second cover plate (1022) in a buckle manner.

7. The power supply circuit for sensor power supply according to claim 3, wherein ​ ​ ​ ​ ​ ​ The sensor (101) is used to send the detected battery body temperature and battery body internal air pressure data to the battery management device in real time through the antenna on the sensor (101) in a wireless communication manner, the battery management device is used to judge whether the temperature and air pressure data are abnormal in real time, if the data is abnormal, the battery management device is also used to give a warning and control to cut off the connection circuit of the battery body.

8. The power supply circuit for powering a sensor of claim 3, wherein, The material of the first cover plate (1021) is aluminum alloy, and the material of the second cover plate (1022) is plastic material.

9. A battery, characterized by The power supply circuit for powering a sensor (101) and the battery body of any one of claims 1-8. The power supply circuit for powering a sensor (101) and the battery body of any one of claims 1-8.

Images