Automatic reading and detecting device and system for storage records of standby battery pack

Abstract

The embodiment of the utility model provides an automatic reading and detecting device and system for storage records of a standby battery pack, and belongs to the technical field of standby battery pack detecting equipment. The automatic reading detection device comprises a time relay, a detection module, a charging module and a storage module, the time relay is connected to the two ends of an NTC resistor of a battery pack protection plate, and the on-off of the NTC resistor is controlled through the delay setting of the time relay, so that the temperature change of a battery cell of a battery pack is simulated, and the battery pack protection plate is protected. The detection module and the charging module cooperate with each other to automatically control the on-off state of an MOS tube of the protection board, so that the storage module generates a record of storage data.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of standby battery pack detection equipment, in particular to an automatic reading detection device and system for standby battery pack storage record. BACKGROUND

[0002] With the development of modern science and technology, cordless electric tools gradually become the mainstream choice of the market because of their convenience and flexibility, thereby indirectly promoting the wide application of battery packs. In the actual application of battery pack technology, in order to better monitor the performance of the standby battery pack, the standby battery pack needs to be detected frequently. The existing detection method usually relies on the switching action of the battery pack protection board to generate storage data. Specifically, when the protection board detects abnormal state of the battery pack (such as overcharge, overdischarge, short circuit, etc.), it will quickly respond by cutting off or connecting the circuit through internal MOS tube and other switching elements to protect the battery pack from damage. At the same time, this switching action will also trigger the storage record function to record the current battery state information.

[0003] However, when performing storage record reading detection, the existing method often needs manual operation, which makes the protection board of the battery pack repeatedly switch to generate enough storage data records for subsequent analysis and diagnosis. This detection method not only wastes human resources, but also makes the detection process cumbersome and time-consuming, affecting the detection efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an automatic reading detection device and system for standby battery pack storage record, which can automatically make the protection board of the battery pack switch during charging and discharging without manual operation.

[0005] In order to achieve the above purpose, the utility model provides an automatic reading detection device for standby battery pack storage record, which comprises:

[0006] A time relay, the output end of which is connected with both ends of the NTC resistance of the battery pack protection board, is used for timing control of the on-off of the NTC resistance;

[0007] A detection module, the input end of which is connected with both ends of the NTC resistance, is used for detection of the resistance value of the NTC resistance;

[0008] A charging module, the input end of which is used for connection with a charger, the output end of which is connected with the battery pack, and the control end of which is connected with the output end of the detection module;

[0009] A storage module, which is connected with the charging module, is used for recording the storage data of the battery pack when the charging module acts.

[0010] Optionally, the automatic reading detection device further comprises a host computer connected with the battery protection board, for receiving the storage data of the battery.

[0011] Optionally, the time relay model comprises JSS48A-2Z.

[0012] Optionally, the automatic reading detection device further comprises an alternating current power supply, two ends of the alternating current power supply are connected with the seventh end and the second end of the time relay respectively, and the third end and the fifth end of the time relay are connected with two ends of the NTC resistance respectively.

[0013] Optionally, the detection module comprises:

[0014] a first chip;

[0015] a first diode, a negative end of the first diode is connected with a VM pin of the first chip;

[0016] a first resistance, one end of the first resistance is connected with a positive end of the first diode, and the other end of the first resistance is connected with the other end of the NTC resistance and the ground;

[0017] a second resistance, one end of the second resistance is connected with a DCTRL pin of the first chip, and the other end of the second resistance is connected with the other end of the first resistance;

[0018] a third resistance, one end of the third resistance is connected with an RUT pin of the first chip;

[0019] a fourth resistance, one end of the fourth resistance is connected with the other end of the third resistance, and the other end of the fourth resistance is connected with one end of the NTC resistance;

[0020] a fifth resistance, one end of the fifth resistance is connected with a ROT pin of the first chip;

[0021] a sixth resistance, one end of the sixth resistance is connected with the other end of the fifth resistance, and the other end of the sixth resistance is connected with the other end of the fourth resistance;

[0022] a seventh resistance, one end of the seventh resistance is connected with a DO pin of the first chip;

[0023] a first capacitance, one end of the first capacitance is connected with a CTT pin of the first chip, and the other end of the first capacitance is connected with the other end of the second resistance.

[0024] Optionally, the charging module comprises:

[0025] an eighth resistance, one end of the eighth resistance is connected with a CO pin of the first chip;

[0026] a ninth resistance, one end of the ninth resistance is connected with the other end of the eighth resistance, and the other end of the ninth resistance is connected with a positive end of the battery.

[0027] a zener diode, a positive terminal of the zener diode being connected with another end of the ninth resistor, and a negative terminal of the zener diode being connected with one end of the ninth resistor;

[0028] a first MOS tube, a gate of the first MOS tube being connected with the negative terminal of the zener diode, and a source of the first MOS tube being connected with the positive terminal of the zener diode;

[0029] a tenth resistor, one end of the tenth resistor being connected with a drain of the first MOS tube;

[0030] an eleventh resistor, one end of the eleventh resistor being connected with another end of the tenth resistor, and another end of the eleventh resistor being connected with the ground;

[0031] a second MOS tube, a gate of the second MOS tube being connected with one end of the eleventh resistor, and a source of the second MOS tube being connected with the ground;

[0032] a twelfth resistor, one end of the twelfth resistor being connected with a drain of the second MOS tube;

[0033] a thirteenth resistor, one end of the thirteenth resistor being connected with another end of the twelfth resistor, and another end of the thirteenth resistor being used for being connected with a charger;

[0034] a third MOS tube, a first end and a third end of the third MOS tube being connected with another end of the thirteenth resistor, and a second end and a fourth end of the third MOS tube being connected with one end of the thirteenth resistor;

[0035] a second zener diode, a positive terminal of the second zener diode being connected with a fifth end, a sixth end, a seventh end and an eighth end of the third MOS tube, and a negative terminal of the second zener diode being used for being connected with a positive terminal of the battery pack.

[0036] Optionally, the charging module further comprises a fuse, one end of the fuse being connected with the negative terminal of the second zener diode, and another end of the fuse being connected with the positive terminal of the battery pack.

[0037] Optionally, a model of the third MOS tube comprises CS4953.

[0038] In another aspect, the utility model provides a kind of automatic reading detection system for emergency battery pack storage record, comprising:

[0039] battery pack;

[0040] battery pack protection board, connected with the battery pack, and the battery pack protection board comprises NTC resistor;

[0041] automatic reading detection device as described above.

[0042] The automatic reading detection device and the automatic reading detection system for storage record of standby battery pack provided by the utility model simulate the temperature change of the battery pack, control the switch state of the MOS pipe of the protection board, and thus generate the record of the storage data. BRIEF DESCRIPTION OF DRAWINGS

[0043] The accompanying drawings are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain the principles of the application. The drawings are provided solely for purposes of illustration, and do not limit the application.

[0044] Figure 1 is a schematic diagram of an automatic reading detection device for storage record of standby battery pack of an embodiment of the utility model.

[0045] Figure 2 is a circuit diagram of an automatic reading detection device for storage record of standby battery pack of an embodiment of the utility model.

[0046] REFERENCE NUMERALS

[0047] U1, first chip D1, first diode

[0048] R1, first resistor R2, second resistor

[0049] R3, third resistor R4, fourth resistor

[0050] R5, fifth resistor R6, sixth resistor

[0051] R7, seventh resistor C1, first capacitor

[0052] R8, eighth resistor R9, ninth resistor

[0053] ZD4, voltage stabilizing diode Q1, first MOS pipe

[0054] R10, tenth resistor R11, eleventh resistor

[0055] Q2, second MOS pipe R12, twelfth resistor

[0056] R13, thirteenth resistor Q3, third MOS pipe

[0057] D2, second diode F1, fuse

[0058] RT1, NTC resistor 01, time relay

[0059] 02, detection module 03, charging module

[0060] 04, storage module DETAILED DESCRIPTION

[0061] The specific embodiments of the utility model embodiments will be described in detail below in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model embodiments, and are not used to limit the utility model embodiments.

[0062] Figure 1 is a schematic view of an automatic reading detection device for standby battery pack storage record according to an embodiment of the utility model. In Figure 1 , the automatic reading detection device can include a time relay 01, a detection module 02, a charging module 03 and a storage module 04.

[0063] The time relay 01 is used to be connected with both ends of the NTC resistance RT1 of the battery pack protection plate to time control the on-off of the NTC resistance RT1, the detection module 02 is connected with both ends of the NTC resistance RT1, and is used to detect the resistance value change of the NTC resistance RT1, the charging module 03 is used to charge the battery pack, the input end thereof is used to be connected with a charger, the output end thereof is connected with the battery pack, and the control end thereof is connected with the output end of the detection module 02, and the storage module 04 is connected with the charging module 03, and is used to record the storage data of the battery pack when the charging module 03 acts.

[0064] At present, the storage record quantity of standby battery pack requires at least 10000 data, in the utility model, the time relay 01 is connected with both ends of the NTC resistance RT1 to control the NTC resistance RT1, when the time relay 01 is in a closed state, the detection module 02 detects that the resistance value of the NTC resistance RT1 is 10KΩ, the analog battery temperature is normal temperature, at this time, the charging module 03 becomes a conduction state, and the battery pack can be normally charged and discharged, when the charging module 03 acts, the storage module 04 records 1 piece of storage data of the battery pack. When the time relay 01 is in an open state, the detection module 02 detects that the resistance value of the NTC resistance RT1 is infinite, at this time, the analog battery temperature is-40 DEG C, reaches the low-temperature protection point, at this time, the charging module 03 becomes an open state, and the charging and discharging of the battery pack is stopped, and the storage module 04 records 1 piece of storage data of the battery pack again. The automatic reading detection device provided by the utility model only needs to set the power-on and power-off delay time of the time relay 01, and can quickly control the change of the charging and discharging state of the battery pack, so that 10000 pieces of data of the battery pack are recorded.

[0065] The traditional standby battery pack storage record detection device usually needs the battery pack in the charging state, the MOS tube state of the protection plate is changed by manual operation, and the storage record is generated, which is time-consuming and labor-intensive. The utility model discloses, the time relay 01 is connected to the both ends of the NTC resistance RT1 of the protection plate, the output state of the battery pack is changed through the setting of the time relay 01, and storage data record is generated, and the data recorded by the storage module 04 can be used to analyze the performance and use of the battery pack, which provides an important reference for subsequent maintenance and management. The automatic reading detection device in the utility model can greatly reduce labor costs and quickly complete storage data entry detection, improving detection efficiency.

[0066] In the embodiment of the utility model, in order to monitor whether the storage data record quantity of the battery pack reaches the requirement of standby power storage data, the automatic reading detection device in the utility model further includes a host computer, the host computer is connected with the battery pack protection plate and is used for receiving the storage data of the battery pack. In addition, the host computer is used as the center of monitoring and analysis, can receive and handle the storage data record from the protection plate, and through the interface and function of the host computer, the operator can also real-time view the working state, storage data and other information of the battery pack, so as to timely discover and handle abnormal conditions, and through the cooperation of the host computer and the automatic reading detection device in the utility model, the automatic control of the battery pack charging and discharging state transformation and the automatic record and transmission of data information are realized.

[0067] In the embodiment of the utility model, the type of the time relay 01 can be various known by the person skilled in the art, and in one embodiment of the utility model, the type of the time relay 01 can be JSS48A-2Z.

[0068] In the embodiment of the utility model, the automatic reading detection device in the utility model further includes an alternating current power supply, specifically, the two ends of the alternating current power supply are connected with the seventh end and the second end of the time relay 01 respectively, and the alternating current power supply is used for supplying power to the time relay 01, ensuring that the time relay 01 can work normally.

[0069] In the embodiment of the utility model, as shown in Figure 2 The detection module 02 can include the first chip U1, the first diode D1, the first resistance R1, the second resistance R2, the third resistance R3, the fourth resistance R4, the fifth resistance R5, the sixth resistance R6, the seventh resistance R7 and the first capacitor C1.

[0070] The negative electrode terminal of the first diode D1 is connected with the VM pin of the first chip U1, one end of the first resistor R1 is connected with the positive electrode terminal of the first diode D1, and the other end of the first resistor R1 is connected with the other end of the NTC resistor RT1 and the ground. One end of the second resistor R2 is connected with the DCTRL pin of the first chip U1, and the other end of the second resistor R2 is connected with the other end of the first resistor R1. One end of the third resistor R3 is connected with the RUT pin of the first chip U1, one end of the fourth resistor R4 is connected with the other end of the third resistor R3, and the other end of the fourth resistor R4 is connected with one end of the NTC resistor RT1. One end of the fifth resistor R5 is connected with the ROT pin of the first chip U1, one end of the sixth resistor R6 is connected with the other end of the fifth resistor R5, and the other end of the sixth resistor R6 is connected with the other end of the fourth resistor R4. One end of the seventh resistor R7 is connected with the DO pin of the first chip U1. One end of the first capacitor C1 is connected with the CTT pin of the first chip U1, and the other end of the first capacitor C1 is connected with the other end of the second resistor R2.

[0071] The detection device is mainly composed of the first chip U1 and peripheral circuits (including the first diode D1, the first resistor R1 to the seventh resistor R7, the first capacitor C1, etc.), and the temperature state of the battery pack is simulated by detecting the resistance value of the NTC resistor RT1 and the charging process is controlled. The RUT and ROT pins of the first chip U1 are connected with the NTC resistor RT1 through the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, and a temperature detection circuit is formed. When the resistance value of the NTC resistor RT1 changes, the voltage on the RUT and ROT pins changes, so that it is perceived by the first chip U1.

[0072] In the embodiment of the utility model, as shown in the figure, Figure 2 As shown in the figure, the charging module 03 can include an eighth resistor R8, a ninth resistor R9, a voltage stabilizing diode ZD4, a first MOS tube Q1, a tenth resistor R10, an eleventh resistor R11, a second MOS tube Q2, a twelfth resistor R12, a second MOS tube Q2, a twelfth resistor R12, a thirteenth resistor R13, a third MOS tube Q3, and a second diode D2.

[0073] One end of the eighth resistor R8 is connected with the CO pin of the first chip U1, one end of the ninth resistor R9 is connected with the other end of the eighth resistor R8, the other end of the ninth resistor R9 is connected with the positive terminal of the battery pack. The positive terminal of the voltage stabilizing diode ZD4 is connected with the other end of the ninth resistor R9, the negative terminal of the voltage stabilizing diode ZD4 is connected with one end of the ninth resistor R9. The gate of the first MOS Q1 is connected with the negative terminal of the voltage stabilizing diode ZD4, the source of the first MOS Q1 is connected with the positive terminal of the voltage stabilizing diode ZD4. One end of the tenth resistor R10 is connected with the drain of the first MOS Q1, one end of the eleventh resistor R11 is connected with the other end of the tenth resistor R10, the other end of the eleventh resistor R11 is grounded. The gate of the second MOS Q2 is connected with one end of the eleventh resistor R11, the source of the second MOS Q2 is grounded. One end of the twelfth resistor R12 is connected with the drain of the second MOS Q2. One end of the thirteenth resistor R13 is connected with the other end of the twelfth resistor R12, the other end of the thirteenth resistor R13 is used for connecting with the charger. The first end and the third end of the third MOS Q3 are connected with the other end of the thirteenth resistor R13, the second end and the fourth end of the third MOS Q3 are connected with one end of the thirteenth resistor R13. The positive terminal of the second diode D2 is connected with the fifth end, the sixth end, the seventh end and the eighth end of the third MOS Q3, the negative terminal of the third diode is used for connecting with the positive terminal of the battery pack.

[0074] The charging device is mainly composed of the eighth resistor R8 to the thirteenth resistor R13, the voltage stabilizing diode ZD4, the first MOS Q1 to the third MOS Q3, the second diode D2 and the like, and is used for controlling the charging process of the battery pack by the external charger when the resistance value of the NTC resistor RT1 changes.

[0075] When the external charger is connected, the charger C+ end is detected first, the C+ end is detected as high level, the second MOS Q2 is in the conducting state, the CO pin of the first chip U1 is open drain output low level, so that the first MOS Q1 is turned on, after the first MOS Q1 and the second MOS Q2 are turned on, the third MOS Q3 is turned on, at this time the charger can charge the battery pack.

[0076] It can be understood that when the 5 and 8 pins of the time relay 01 are closed and the resistance value of the NTC resistor RT1 is infinite, the first chip U1 judges that the battery pack is in the low temperature protection state according to the state of the RUT end, at this time even if the charger has been connected, the CO end of the first chip U1 is in the high resistance state, the first MOS Q1 is in the cut-off state, the whole circuit cannot normally operate, thereby preventing charging.

[0077] When the 5th and 8th pins of the time relay 01 are disconnected, the RUT end of the first chip U1 detects a 10KΩ resistance value. The first chip U1 judges that the battery pack temperature is appropriate according to the resistance value detected by the RUT end, at this time, the third MOS tube Q3 is fully turned on, the external charger is connected with the battery pack, and the normal charging process is started.

[0078] The second diode D2 in the utility model is used for protecting the circuit and preventing the reverse current from damaging the circuit.

[0079] In summary, the time relay 01 controls the on-off of the NTC resistance RT1 in time, so that the resistance value of the NTC resistance RT1 changes in time, and the detection device controls the working state of the charging device by detecting and judging the state of the NTC resistance RT1.

[0080] In the embodiment of the utility model, the charging module 03 further includes a fuse F1, specifically, one end of the fuse F1 is connected with the negative electrode end of the second diode D2, and the other end of the fuse F1 is connected with the positive electrode end of the battery pack. The fuse F1 is a safety barrier between the charging module 03 and the battery pack, which can ensure that the battery pack is not damaged due to abnormal conditions (such as overload and short circuit) during the charging process.

[0081] In the embodiment of the utility model, the type of the third MOS tube Q3 can be various types known by those skilled in the art, and in an embodiment of the utility model, the type of the third MOS tube Q3 can be CS4953.

[0082] On the other hand, the utility model further provides an automatic reading detection system for storing and recording the standby battery pack, which can include a battery pack, a battery pack protection plate and the automatic reading detection device as described above. Specifically, the battery pack protection plate is connected with the battery pack, and the battery pack protection plate includes the NTC resistance RT1.

[0083] The automatic reading detection system provided by the utility model realizes the automatic switching of the battery pack charging and discharging state through the linkage control of the time relay 01 and the NTC resistance RT1. This automatic control mode reduces manual intervention and avoids the cumbersome process of changing the protection board MOS tube state artificially in the traditional method, thereby improving the detection efficiency. The storage module 04 can accurately record the storage data of the battery pack when the charging module 03 acts, including the charging and discharging state, the charging / discharging current, the voltage and other key information. By setting the power-on and power-off delay time of the time relay 01, the charging and discharging state of the battery pack can be quickly controlled, thereby accumulating a large amount of data record in a short time and meeting the storage requirement of at least 10000 data. The data recorded by the storage module 04 provides an important reference for the performance analysis and subsequent maintenance of the battery pack. Through the analysis of these data, the health status of the battery pack can be evaluated, the service life can be predicted, potential safety hazards can be detected and the like, thereby timely maintenance and management are carried out, and the safe and efficient operation of the battery pack is ensured. The above effects jointly promote the improvement of the maintenance and management level of the battery pack and provide protection for the long-term stable operation of the battery pack.

[0084] It should also be noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles or devices that comprise a list of elements do not only include those elements, but also other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0085] The above is only an embodiment of the present application and is not used to limit the present application. The present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. An automatic reading detection device for standby battery storage record, characterized in that, The application relates to a battery pack protection board, which comprises the following parts: a time relay, the output end of which is connected with the two ends of an NTC resistance of a battery pack protection board, and the time relay is used for timing control of the on-off of the NTC resistance; a detection module, the input end of which is connected with the two ends of the NTC resistance, and the detection module is used for detecting the resistance value of the NTC resistance; a charging module, the input end of which is used for being connected with a charger, the output end of which is connected with a battery pack, and the control end of which is connected with the output end of the detection module; a storage module, which is connected with the charging module and is used for recording the storage data of the battery pack when the charging module is in action.

2. The automatic read detection apparatus according to claim 1, characterized by An upper computer is further included, which is connected with the battery pack protection board and is used for receiving the storage data of the battery pack.

3. The automatic read detection apparatus according to claim 1, wherein The model of the time relay comprises JSS48A-2Z.

4. The automatic reading detection apparatus according to claim 1 or 3, characterized by An alternating current power supply is further included, the seventh end and the second end of the time relay are respectively connected with the two ends of the alternating current power supply, and the third end and the fifth end of the time relay are respectively connected with the two ends of the NTC resistance.

5. The automatic read detection apparatus of claim 1, wherein The detection module comprises the following parts: a first chip; a first diode, the negative end of which is connected with the VM pin of the first chip; a first resistance, one end of which is connected with the positive end of the first diode, and the other end of which is connected with the other end of the NTC resistance and the ground; a second resistance, one end of which is connected with the DCTRL pin of the first chip, and the other end of which is connected with the other end of the first resistance; a third resistance, one end of which is connected with the RUT pin of the first chip; a fourth resistance, one end of which is connected with the other end of the third resistance, and the other end of which is connected with one end of the NTC resistance; a fifth resistance, one end of which is connected with the ROT pin of the first chip; a sixth resistance, one end of which is connected with the other end of the fifth resistance, and the other end of which is connected with the other end of the fourth resistance; a seventh resistance, one end of which is connected with the DO pin of the first chip; a first capacitor, one end of which is connected with the CTT pin of the first chip, and the other end of which is connected with the other end of the second resistance.

6. The automatic read detection apparatus according to claim 5, wherein The charging module comprises the following parts: an eighth resistance, one end of which is connected with the CO pin of the first chip; a ninth resistance, one end of which is connected with the other end of the eighth resistance, and the other end of which is connected with the positive end of the battery pack; a voltage stabilizing diode, the positive end of which is connected with the other end of the ninth resistance, and the negative end of which is connected with one end of the ninth resistance; a first MOS tube, the gate of which is connected with the negative end of the voltage stabilizing diode, and the source of which is connected with the positive end of the voltage stabilizing diode; a tenth resistance, one end of which is connected with the drain of the first MOS tube; an eleventh resistance, one end of which is connected with the other end of the tenth resistance, and the other end of which is connected with the ground; a second MOS tube, the gate of which is connected with one end of the eleventh resistance, and the source of which is connected with the ground; a twelfth resistance, one end of which is connected with the drain of the second MOS tube; a thirteenth resistance, one end of which is connected with the other end of the twelfth resistance, and the other end of which is used for being connected with a charger. a third MOS, a first end and a third end of the third MOS are connected with another end of the thirteenth resistor, a second end and a fourth end of the third MOS are connected with one end of the thirteenth resistor; a second diode, a positive end of the second diode is connected with a fifth end, a sixth end, a seventh end and an eighth end of the third MOS, a negative end of the second diode is used to be connected with a positive end of the battery pack.

7. The automatic read detection apparatus according to claim 6, wherein The charging module further comprises a fuse, one end of the fuse is connected with the negative end of the second diode, the other end of the fuse is connected with the positive end of the battery pack.

8. The automatic read detection apparatus of claim 6, wherein The model of the third MOS comprises CS4953.

9. An automatic reading detection system for standby battery bank storage records, characterized by, comprise: a battery pack; a battery protection board connected with the battery pack, the battery protection board comprises an NTC resistor; The automatic reading detection device according to any one of claims 1-8.

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