Battery protection board, equipment terminal and battery protection system

Abstract

The embodiment of the utility model provides a battery protection board, an equipment end and a battery protection system, the battery protection board comprises a battery cell, a voltameter and a first radio frequency transceiver, the first radio frequency transceiver and the voltameter are respectively connected with the battery cell, and the first radio frequency transceiver is connected with the voltameter; the voltameter is used for measuring the state information of the battery cell and sending the state information to the first radio frequency transceiver, so that the state information is sent to the equipment end through the first radio frequency transceiver, and the problem that in the related technology, due to the fact that the voltameter is placed on a circuit board, the accuracy of the voltameter is low due to path impedance between the battery and the circuit board is solved; and thus, the effect of improving the battery compatibility is achieved.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to electronic product equipment field, specifically, relate to a battery protection board, equipment end and battery protection system. BACKGROUND

[0002] For the thermal imager product of replaceable battery, often need to use a electric capacity meter to obtain the voltage, temperature and capacity size of battery, if want to realize this function, the traditional scheme will electric capacity meter on the circuit board. There is path impedance between battery and circuit board, will influence electric capacity meter's sampling, influence electric capacity meter's correctness, will cause the value of reading to have error.

[0003] For the above problems, there is no effective solution at present. UTILITY MODEL CONTENT

[0004] The embodiment of the utility model provides a kind of battery protection board, equipment end and battery protection system, to at least solve the problem of low accuracy of electric capacity meter due to electric capacity meter on circuit board in relevant technology, the path impedance between battery and circuit board leads to.

[0005] According to one embodiment of the utility model, a battery protection board is provided, comprising: battery cell, electric capacity meter and first radio frequency transceiver, wherein the first radio frequency transceiver and the electric capacity meter are connected to the battery cell respectively, and the first radio frequency transceiver is connected to the electric capacity meter;The electric capacity meter is used to measure the state information of the battery cell, and sends the state information to the first radio frequency transceiver, to send the state information to the equipment end by the first radio frequency transceiver.

[0006] In one exemplary embodiment, the first radio frequency transceiver is connected to the electric capacity meter, comprising: the first clock pin of the first radio frequency transceiver is connected to the second clock pin of the electric capacity meter by clock line;The first data pin of the first radio frequency transceiver is connected to the second data pin of the electric capacity meter by data line.

[0007] In one exemplary embodiment, the first radio frequency transceiver is connected to the electric capacity meter, and further comprising: the power supply voltage pin of the first radio frequency transceiver is connected to the clock line by first resistance;The power supply voltage pin of the first radio frequency transceiver is connected to the data line by second resistance.

[0008] In one exemplary embodiment, the first radio frequency transceiver is connected to the battery cell, comprising: the enable pin and the power supply voltage pin of the first radio frequency transceiver are connected to the positive pole of the battery cell respectively.

[0009] In one example embodiment, the enable pin and the power voltage pin of the first radio frequency transceiver are connected to the positive pole of the battery cell respectively, comprising: the enable pin and the power voltage pin of the first radio frequency transceiver are connected to the positive pole of the battery cell through a third resistor.

[0010] In one example embodiment, the battery protection board further comprises: a first field effect transistor and a second field effect transistor, and the ground pin of the first radio frequency transceiver is connected to the first field effect transistor and the second field effect transistor respectively.

[0011] In one example embodiment, the battery protection board further comprises: a protection chip connected to the battery cell, and the protection chip is connected to the first field effect transistor and the second field effect transistor respectively.

[0012] In one example embodiment, the protection chip is connected to the battery cell, comprising: the battery voltage pin of the protection chip is connected to the positive pole of the battery cell through a third resistor; and the ground pin of the protection chip is connected to the negative pole of the battery cell.

[0013] In one example embodiment, the first field effect transistor is further connected to the second field effect transistor, and the first field effect transistor is connected to the negative pole of the battery cell.

[0014] In one example embodiment, the first radio frequency transceiver is a wireless transceiver of 60GHz band.

[0015] According to another embodiment of the present application, a device end is provided, comprising: a second radio frequency transceiver, which is used to receive the state information of a battery cell from a first radio frequency transceiver of a battery protection board; wherein the battery protection board further comprises: a battery cell, a battery gauge, the first radio frequency transceiver and the battery gauge are connected to the battery cell respectively, and the first radio frequency transceiver is connected to the battery gauge; the battery gauge is used to measure the state information of the battery cell and send the state information to the first radio frequency transceiver, so as to send the state information to the second radio frequency transceiver through the first radio frequency transceiver.

[0016] In one example embodiment, the second radio frequency transceiver is a wireless transceiver of 60GHz band.

[0017] According to the battery protection system, the state information of the battery cell can be transmitted to the device end through the first radio frequency transceiver, and the device end can receive the state information of the battery cell from the first radio frequency transceiver of the battery protection plate.

[0018] In one exemplary embodiment, the first radio frequency transceiver and the second radio frequency transceiver are wireless transceivers of a 60GHz band.

[0019] According to the battery protection system, the state information of the battery cell can be transmitted to the device end through the first radio frequency transceiver, and the device end can receive the state information of the battery cell from the first radio frequency transceiver of the battery protection plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a principle block diagram according to the embodiment of the utility model;

[0021] Figure 2 is a circuit diagram according to the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The embodiments of the utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] The battery protection plate provided by the embodiment of the utility model has the characteristics that it comprises: a battery cell, a power gauge and a first radio frequency transceiver, wherein the first radio frequency transceiver and the power gauge are connected to the battery cell respectively, and the first radio frequency transceiver is connected to the power gauge; the power gauge is used for measuring the state information of the battery cell and transmitting the state information to the first radio frequency transceiver, so as to transmit the state information to the device end through the first radio frequency transceiver.

[0024] The utility model embodiment provides a kind of equipment end, it is characterized in that, comprising: second radio frequency transceiver, the second radio frequency transceiver is used to receive the state information of battery core from the first radio frequency transceiver of battery protection board;Wherein, battery protection board further includes: battery core, the first radio frequency transceiver and the electric quantity meter are connected to the battery core, the first radio frequency transceiver is connected to the electric quantity meter;The electric quantity meter is used to measure the state information of the battery core, and the state information is sent to the first radio frequency transceiver, to send the state information to the second radio frequency transceiver by the first radio frequency transceiver.

[0025] Figure 1 It is according to the principle block diagram of the utility model embodiment, as Figure 1 Shown, this embodiment includes battery protection board and equipment (mainboard), battery protection board includes battery core, protection integrated circuit (Integrated Circuit, IC for short), electric quantity meter, radio frequency transceiver, wherein radio frequency transceiver realizes the wireless transceiving of battery information, equipment (mainboard) includes processor and radio frequency transceiver, wherein radio frequency transceiver and battery protection board communication, realizes data transmission.This embodiment utilizes radio frequency transceiver to act as transmission medium, and the information of battery protection board is transmitted to equipment (mainboard), so that equipment (mainboard) is freed from the restraint condition of cable, because there is radio frequency transceiver in battery protection board and equipment (mainboard), so the radio frequency transceiver in battery protection board is called the above-mentioned first radio frequency transceiver, and the above-mentioned first radio frequency transceiver is 60GHz band wireless transceiver.The radio frequency transceiver of the above-mentioned equipment (mainboard) end is called the above-mentioned second radio frequency transceiver.The above-mentioned second radio frequency transceiver is 60GHz band wireless transceiver.In battery protection board, the above-mentioned first radio frequency transceiver and the above-mentioned electric quantity meter are connected with the above-mentioned battery core, and the above-mentioned first radio frequency transceiver is connected with the above-mentioned electric quantity meter.The electric quantity meter information is transmitted to the above-mentioned first radio frequency transceiver by the electric quantity meter, when equipment (mainboard) end needs to obtain battery state information, equipment (mainboard) end will be wirelessly communicated with battery protection board end, and obtains battery state information.

[0026] By increasing electric quantity meter and radio frequency transceiver on battery protection board, the data read by electric quantity meter is sent out by wireless transceiver, such communication mode is freed from the hard connection of wiring harness, and simultaneously makes the appearance of battery simple and consistent with normal product. Host or slave with wireless transceiver can accept electric quantity data, and equipment without wireless transceiver can also use battery product normally, without other restrictions.

[0027] Figure 2This is a circuit diagram according to an embodiment of the present invention, wherein U1 is the aforementioned fuel gauge chip, which acquires battery status information, reading battery voltage, current, charge percentage, and temperature. U2 is an RF transceiver, which wirelessly transmits the acquired data to the RF transceiver on the device (motherboard) to complete data transmission. U3 is a protection IC chip, which prevents abnormal states such as over-discharge, over-charge, and over-current of the battery cell. U4 and U5 are switching metal-oxide-semiconductor (MOS) transistors.

[0028] Specifically, the first radio frequency transceiver is connected to the fuel gauge, including: the first clock pin of the first radio frequency transceiver is connected to the second clock pin of the fuel gauge via a clock line; the first data pin of the first radio frequency transceiver is connected to the second data pin of the fuel gauge via a data line.

[0029] The first clock pin mentioned above is the Serial Clock (SCL) signal line, used to control the timing of data transmission. The first data pin mentioned above is the Serial Data (SDA) signal line. Figure 2 For example, the first radio frequency transceiver is connected to the SCL of U2 via a clock line (the connection line from interface 3 of U2 to interface A3 of U1) and the SCL of U2 is connected to the SDA of U1 via a data line (the connection line from interface 4 of U2 to interface A2 of U1).

[0030] Specifically, the first radio frequency transceiver is connected to the fuel gauge, and further includes: the power supply voltage pin of the first radio frequency transceiver is connected to the clock line through a first resistor; the power supply voltage pin of the first radio frequency transceiver is connected to the data line through a second resistor.

[0031] by Figure 2 For example, the power supply voltage pin mentioned above is a voltage direct drain (VDD). The first resistor mentioned above is R4, and the second resistor mentioned above is R5. R4 and R5 are I2C pull-up resistors used to enhance the driving capability of the IO pin. The connection between the first RF transceiver and the above fuel gauge includes: the VDD port of U2 is connected to the clock line (the connection line from interface 3 of U2 to interface A3 of U1) via R4, and the VDD port of U2 is connected to the data line (the connection line from interface 4 of U2 to interface A2 of U1) via R5.

[0032] Specifically, the first radio frequency transceiver is connected to the battery cell, including: the enable pin and the power supply voltage pin of the first radio frequency transceiver are respectively connected to the positive terminal of the battery cell.

[0033] Specifically, the enable pin and power supply voltage pin of the first RF transceiver are both connected to the positive terminal of the battery cell through a third resistor.

[0034] by Figure 2 For example, the above-mentioned enable pin is Enable (EN) and Radio Frequency Enable (RF_EN), the above-mentioned power supply voltage pin is VDD, the above-mentioned positive terminal of the battery cell is Raspberry Pi (pi+), the above-mentioned third resistor is R6, and the above-mentioned first RF transceiver is connected to the VDD, EN, and RF_EN ports of the above-mentioned battery cell U2 through R6 and connected to the pi+ of the battery cell.

[0035] Specifically, the battery protection board further includes: a first field-effect transistor and a second field-effect transistor, with the ground pin of the first radio frequency transceiver connected to the first field-effect transistor and the second field-effect transistor respectively.

[0036] by Figure 2 For example, the first and second field-effect transistors mentioned above are MOSFETs, namely U4 and U5. The ground pin of the first RF transceiver is the exposed pad (EPAD) and ground (GND). The ground pin of the first RF transceiver is connected to the EPAD and GND ports of the first and second field-effect transistors, namely U2, and is connected to U4 and U5 respectively.

[0037] Specifically, the battery protection board further includes a protection chip connected to the battery cell, and the protection chip is also connected to the first field-effect transistor and the second field-effect transistor respectively.

[0038] Specifically, the protection chip is connected to the battery cell, including: the battery voltage pin of the protection chip is connected to the positive terminal of the battery cell through a third resistor; the ground pin of the protection chip is connected to the negative terminal of the battery cell.

[0039] by Figure 2 For example, the protection chip mentioned above is U3, its battery voltage pin is VCC, the positive terminal of the battery cell is Pi+, and the third resistor is R6. The battery voltage pin of the protection chip is connected to the VCC port of the positive terminal U3 through the third resistor, and then connected to the Pi+ terminal of the battery cell through R6. The ground pin of the protection chip is GND, and the negative terminal of the battery cell is Pi-. The ground pin of the protection chip is connected to the GND of the negative terminal U3 and then connected to the Pi- terminal of the battery cell.

[0040] The first field effect transistor and the second field effect transistor are connected to U3 and U4, U5 respectively. When the abnormal state of the battery triggers the U3 protection chip, the output port (Output, DO for short) and the cascade output port (Cascade Output, CO for short) of U3 will control the MOS tube to be cut off, preventing the battery from continuing to output and external input.

[0041] Specifically, the first field effect transistor is further connected to the second field effect transistor, and the first field effect transistor is connected to the negative electrode of the battery.

[0042] The first field effect transistor is further connected to the second field effect transistor, and the first field effect transistor is connected to the negative electrode of the battery.

[0043] The utility model discloses an embodiment provides a kind of battery protection system, it is characterized by comprising: battery protection board and equipment end, wherein, battery protection board, comprising: battery, electric quantity meter and first radio frequency transceiver, wherein, the first radio frequency transceiver and the electric quantity meter are connected to the battery respectively, and the first radio frequency transceiver is connected to the electric quantity meter;The electric quantity meter is used to measure the state information of the battery, and the state information is sent to the first radio frequency transceiver, to send the state information to equipment end by the first radio frequency transceiver.Equipment end, comprising: second radio frequency transceiver, and it is used to receive the state information of battery from the first radio frequency transceiver of battery protection board.The first radio frequency transceiver and the second radio frequency transceiver are 60GHz waveband wireless transceiver.

[0044] The embodiment adopts a wireless connection technology, places the electric quantity meter on the battery end, but does not need additional communication signal, and the battery appearance is consistent with ordinary product without electric quantity meter, and the product has high versatility, and the structural design of product is relatively simple, and development cost is reduced.Solve the problem that if battery is pulled out, due to the existence of capacitor in circuit, there is still voltage on electric quantity meter, so that battery has been pulled out and cannot be identified.The wireless chip has small size, low static power consumption, and low static leakage current when equipment is not working.

[0045] The embodiment is realized by hardware circuit:

[0046] (1) 60GHz waveband wireless transceiver is used for transmitting high-speed signal, and the transmission speed is as high as 6.25 Gbps, and the best wireless performance is low in power consumption.

[0047] (2) Since no cable and fixed connector are needed, the battery appearance is consistent with the standard product, and the battery compartment only needs to leave positive and negative connection terminals, without leaving too many interfaces, and has certain advantages in the waterproof design of the battery compartment.

[0048] (3) Wireless connection is used, and no connector port is needed to consider the environmental influence or the influence of the function due to the connector life problem.

[0049] (4) Board-to-board non-contact connection is used, without cable connection, and the overall structure is simple.

[0050] (5) In the case of ensuring that the battery is a standard product, accurate reading of the battery state parameters can be realized.

[0051] The application uses millimeter wave technology, works in the 60GHz band, and is low-power operation, which is closer to the application of small products. Moreover, it is a centimeter-level communication, and the size is particularly small, which is an application on a small battery.

[0052] Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present application can be realized by a general computing device, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, which can be realized by program codes executable by the computing device, so that they can be stored in the storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in different order, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps can be manufactured into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.

[0053] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery protection plate, characterized in that, The battery protection board comprises: an electric core, a power gauge and a first radio frequency transceiver, wherein the first radio frequency transceiver and the power gauge are connected to the electric core respectively, and the first radio frequency transceiver is connected to the power gauge; the power gauge is used to measure the state information of the electric core and send the state information to the first radio frequency transceiver so as to send the state information to a device end through the first radio frequency transceiver.

2. The battery protection plate of claim 1, wherein, The first radio frequency transceiver connected to the power gauge comprises: a first clock pin of the first radio frequency transceiver is connected to a second clock pin of the power gauge through a clock line; a first data pin of the first radio frequency transceiver is connected to a second data pin of the power gauge through a data line.

3. The battery protection plate of claim 2, wherein, The first radio frequency transceiver connected to the power gauge further comprises: a power voltage pin of the first radio frequency transceiver is connected to the clock line through a first resistor; a power voltage pin of the first radio frequency transceiver is connected to the data line through a second resistor.

4. The battery protection plate of claim 1, wherein, The first radio frequency transceiver connected to the electric core comprises: an enable pin and a power voltage pin of the first radio frequency transceiver are connected to a positive pole of the electric core respectively.

5. The battery protection plate of claim 4, wherein, The enable pin and the power voltage pin of the first radio frequency transceiver connected to the positive pole of the electric core comprise: the enable pin and the power voltage pin of the first radio frequency transceiver are both connected to the positive pole of the electric core through a third resistor.

6. The battery protection plate of claim 1, wherein, The battery protection board further comprises:

7. The battery protection plate of claim 6, wherein, a first field effect transistor and a second field effect transistor, and a ground pin of the first radio frequency transceiver is connected to the first field effect transistor and the second field effect transistor respectively.

8. The battery protection plate of claim 7, wherein, The battery protection board further comprises: a protection chip, wherein the protection chip is connected to the electric core, and the protection chip is also connected to the first field effect transistor and the second field effect transistor respectively. The protection chip connected to the electric core comprises:

9. The battery protection plate of claim 7, wherein, a battery voltage pin of the protection chip is connected to the positive pole of the electric core through a third resistor; 10. The battery protection plate of claim 7, wherein, a ground pin of the protection chip is connected to a negative pole of the electric core.

11. A device end, characterized by The first field effect transistor is also connected to the second field effect transistor, and the first field effect transistor is connected to the negative pole of the electric core. The first radio frequency transceiver is a 60GHz band wireless transceiver. The battery protection board comprises: a second radio frequency transceiver, 12. The device end of claim 11, wherein, the second radio frequency transceiver is used to receive the state information of the electric core from the first radio frequency transceiver of the battery protection board; 13. A battery protection system, characterized by wherein the battery protection board further comprises: an electric core, a power gauge, the first radio frequency transceiver and the power gauge are connected to the electric core respectively, and the first radio frequency transceiver is connected to the power gauge; the power gauge is used to measure the state information of the electric core and send the state information to the first radio frequency transceiver so as to send the state information to the second radio frequency transceiver through the first radio frequency transceiver. The second radio frequency transceiver is a 60GHz band wireless transceiver. The battery protection board and a device end comprise: The battery protection board comprises: an electric core, an electric quantity meter and a first radio frequency transceiver, wherein the first radio frequency transceiver and the electric quantity meter are connected to the electric core respectively, and the first radio frequency transceiver is connected to the electric quantity meter; the electric quantity meter is used for measuring state information of the electric core and sending the state information to the first radio frequency transceiver, so as to send the state information to a device end through the first radio frequency transceiver. The device end comprises: a second radio frequency transceiver, which is used for receiving the state information of the electric core from the first radio frequency transceiver of the battery protection board.

14. The battery protection system of claim 13, wherein, The first radio frequency transceiver and the second radio frequency transceiver are wireless transceivers in a 60 GHz wave band.

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