Battery module and method for detecting abnormal installation of battery module

Abstract

The invention belongs to the field of battery impedance detection, and particularly relates to a battery module and a detection method for abnormal installation of the battery module. A positive electrode contact; a negative contact; and the detection module is connected with the positive electrode contact and the negative electrode contact. Power is supplied to the detection module through the battery body, after the battery module is connected with equipment, the detection module collects voltage and current of a line in real time, and after collection is completed, data information of the voltage and the current is collected through the detection module. And according to an impedance calculation formula: dividing the voltage drop V of the two voltages by the collected current I to obtain the impedance R between the battery module and the equipment connecting end, so that the impedance between the battery module and the equipment connecting end can be detected in real time when the battery module is installed in the equipment, and the connection condition of the battery module and the equipment can be conveniently judged. Therefore, the contact condition of the battery module and the equipment can be known in real time, the safety of the battery is ensured in real time, and the equipment can be checked in time when the impedance is abnormal.

Description

Technical Field

[0001] The present invention belongs to the field of battery impedance detection, and in particular relates to a battery module and a method for detecting abnormal installation thereof. Background Art

[0002] As there are more and more battery products in our lives, from small mobile phones to large vehicles and drones, battery safety is often the focus of people's attention. The quality of the battery itself has become very mature with the development of technology, but people's usage habits and personal operations have become the main problems.

[0003] Taking drones as an example, when the drone battery is well connected to the aircraft, it can fly normally. However, if the connection is loose during the flight, the connection plug may easily fall off or melt under high temperature under high current, seriously affecting flight safety. Therefore, it is impossible to detect the condition of the power module in the drone well, and it is also impossible to accurately determine the impedance of the connection part between the drone equipment and the power module. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a method for detecting a battery module and an abnormal installation thereof, so as to solve the problem that the impedance between the battery module and the device connection end cannot be detected in real time, and the detected impedance is not accurate enough, resulting in the inability to accurately judge the connection status between the device and the battery module.

[0005] One embodiment of the present invention provides a battery module, which provides power to an external device by connecting to corresponding contacts of the external device, including: The battery body, including the positive electrode and the negative electrode; A positive electrode contact, electrically connected to the positive electrode of the battery body; A negative electrode contact electrically connected to the negative electrode of the battery body; A detection module is connected to the positive contact and the negative contact, and is used to detect the impedance between the positive contact and the corresponding contact of the device and / or the impedance between the negative contact and the corresponding contact of the device; or, is used to detect the sum of the impedances between the positive contact and the corresponding contact of the device and between the negative contact and the corresponding contact of the device.

[0006] A battery module of the present invention supplies power to a detection module through a battery body. After the battery module is connected to a device, the detection module is used to collect voltage and current of the line in real time. After the collection is completed, the voltage and current data information collected by the detection module is used to calculate the impedance R between the battery module and the device connection end according to the impedance calculation formula: the voltage drop V at two points is divided by the collected current I. When the battery module is installed in the device, the impedance between the battery module and the device connection end can be detected in real time through the above module, which is convenient for judging the connection status of the battery module and the device, so that the contact status of the battery module and the device can be understood in real time, the safety of the battery can be ensured in real time, and the device can be checked in time when the impedance is abnormal.

[0007] In one embodiment, the detection module includes a voltage detection module and a current detection module, which are respectively used to detect the voltage drop between the battery module contacts and the device contacts and the power supply current of the battery module to the device.

[0008] In one embodiment, the detection module includes: A first sampling line, connected to the positive contact and transmitting a signal to the detection module; A second sampling line, which can be connected to the positive contact of the device and transmit a signal to the detection module; A third sampling line, connected to the negative contact and transmitting a signal to the detection module; The fourth sampling line can be connected to the negative contact of the device and transmit a signal to the detection module.

[0009] In one embodiment, the device is provided with a device positive detection contact and a device negative detection contact respectively connected to the device positive contact and the device negative contact, the detection module also includes a positive detection contact and / or a negative detection contact, the positive detection contact and the negative detection contact can be respectively connected to the device positive detection contact and the device negative transfer contact, the second sampling line and the fourth sampling line are respectively connected to the positive detection contact and the negative detection contact.

[0010] In one embodiment, a control module is further included, which can receive the detection module signal and output a control signal.

[0011] One embodiment of the present invention provides a method for detecting abnormal installation of a battery module of a device, wherein the battery module is electrically connected to the device via a connection terminal; It also includes a detection module, which is used to detect the impedance between the battery module and the connection end of the device, and determine whether there is any installation abnormality in the battery module according to the size of the impedance.

[0012] In one embodiment, the detection module includes a voltage detection module and a current detection module, which are respectively used to detect the voltage drop between the battery module connection end and the device connection end and the power supply current of the battery module to the device, and the impedance between the battery module and the device connection end is calculated by the voltage drop and the power supply current.

[0013] In one embodiment, the battery module includes a battery body, the battery body includes a positive electrode and a negative electrode, the battery module connection end includes a positive electrode contact and a negative electrode contact, the positive electrode contact and the negative electrode contact are electrically connected to the positive electrode and the negative electrode of the battery body respectively; The device connection end includes a device positive contact and a device negative contact, which are respectively connected to the positive contact and the negative contact; The detection module is used to detect the impedance between the positive contact and the positive contact of the device and / or the impedance between the negative contact and the negative contact of the device; or, to detect the sum of the two impedances between the positive contact and the positive contact of the device and between the negative contact and the negative contact of the device.

[0014] In one embodiment, the battery module connection end further includes a positive electrode detection contact and a negative electrode detection contact, and the device connection end is correspondingly provided with a device positive electrode detection contact and a device negative electrode detection contact. Among them, the positive pole detection contact is connected to the positive pole contact or the positive pole detection contact of the device is connected to the positive pole contact of the device, and the negative pole detection contact is connected to the negative pole contact or the negative pole detection contact of the device is connected to the negative pole contact of the device.

[0015] In one embodiment, there are: The first sampling line is connected to the positive contact signal, and the second sampling line is connected to the positive detection contact signal; or the first sampling line is connected to the positive contact signal of the device, and the second sampling line is connected to the positive detection contact signal of the device, and the first sampling line and the second sampling line transmit signals to the detection module; The third sampling line is connected to the negative pole contact signal, and the fourth sampling line is connected to the negative pole detection contact signal; or, the third sampling line is connected to the negative pole contact signal of the device, and the fourth sampling line is connected to the negative pole detection contact signal of the device, and the third sampling line and the fourth sampling line transmit signals to the detection module.

[0016] In one embodiment, a control module is further included, which can receive the signal from the detection module and output a control signal for controlling the battery module or the equipment power module.

[0017] The battery module provided by the above technical solution has the following beneficial effects: 1. The battery module of this application is provided with a detection module, which can detect the contact impedance between the two plug-in terminals of the battery module and the device, and judge whether the connection between the battery module and the device is abnormal by the size of the impedance. The size of the impedance can very accurately reflect whether the connection is abnormal, thereby reducing the probability of loose connection caused by poor battery installation, resulting in the connection plug falling off or high-temperature melting under high current, which seriously affects the safety of the device. On this basis: 2. This technology collects the voltage drop and corresponding line current between the battery module and the device connection terminal through the detection module, and can accurately calculate the contact impedance at the connection terminal position, and further accurately determine whether the connection is abnormal. That is, this technology can ensure that the judgment result of whether it is abnormal is very accurate through the precision of two steps.

[0018] 3. When detecting the voltage drop between the connection ends, the detection position is switched by cleverly setting the detection contact and connecting the detection contact with the positive and negative contacts, so that the voltage information between the two corresponding contacts can be detected very conveniently. And the detection contacts do not need to have good contact with the positive and negative contacts. As long as they can be in contact and conductive, the signal can be collected. That is, the present application can ensure accurate detection on the basis of convenient detection, and the operation requirements are low, and no additional operation burden is added.

[0019] 4. All contacts are set in the connection end, which can be made into a connector, and the corresponding contacts are the contacts in the connector, which can be the same as ordinary connectors in appearance, and the connection end of this battery module can also be compatible with conventional connectors. Even if the device is not equipped with corresponding detection contacts, it will not affect the use of this battery module. At the same time, the device connection end also has the same effect.

[0020] 5. The detection methods are diverse. This application can detect the connection status of the positive contact and the negative contact simultaneously or separately through the settings of positive and negative contacts, detection contacts, sampling lines, etc. It can also comprehensively judge whether there is a connection abnormality by detecting the total impedance at the two positions. The comparison and analysis of multiple detection data improves the accuracy of the detection impedance. With multiple detection methods, when abnormalities occur in some lines, the detection can be carried out and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1It is a structural schematic diagram of a battery module of the present invention; Figure 2 A schematic diagram of the connection between the battery module and the device of the present invention; Figure 3 It is an explanatory diagram in the corresponding specification of the present invention; Figure 4 The circuit of the voltage detection module of the present invention Figure 1 ; Figure 5 The circuit of the voltage detection module of the present invention Figure 2 .

[0023] The markings in the figure are as follows: 100. Battery body; 200, positive electrode contact; 210, positive electrode detection contact; 300, negative pole contact; 310, negative pole detection contact; 400, detection module; 410, voltage detection module; 420, current detection module; 430, first sampling line; 431, second sampling line; 432, third sampling line; 433, fourth sampling line; 600, positive contact of the device; 610, positive detection contact of the device; 700, negative pole contact of the device; 710, negative pole detection contact of the device; 800, battery control module; 810, power control module; 900, connection end. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] like Figure 1-5 As shown, one embodiment of the present invention provides a battery module, which provides power to an external device by connecting to corresponding contacts of the external device, including: The battery body 100 includes a positive electrode and a negative electrode; A positive electrode contact 200, electrically connected to the positive electrode of the battery body 100; A negative electrode contact 300 electrically connected to the negative electrode of the battery body 100; The detection module 400 is connected to the positive contact 200 and the negative contact 300, and is used to detect the impedance between the positive contact 200 and the corresponding contact of the device and / or the impedance between the negative contact 300 and the corresponding contact of the device; or, is used to detect the sum of the impedances between the positive contact 200 and the corresponding contact of the device and between the negative contact 300 and the corresponding contact of the device.

[0031] A battery module of the present invention supplies power to a detection module 400 through a battery body 100. After the battery module is connected to a device, the detection module 400 is used to collect the voltage and current of the line in real time. After the collection is completed, the voltage and current data information collected by the detection module 400 is calculated according to the impedance calculation formula: the voltage drop V at two points divided by the collected current I is used to obtain the impedance R between the battery module and the device connection end. When the battery module is installed in the device, the module can be used to detect the impedance between the battery module and the device connection end in real time, so as to facilitate the judgment of the connection status of the battery module and the device, thereby realizing the real-time understanding of the contact status between the battery module and the device, ensuring the safety of the battery in real time, and timely checking the device when the impedance is abnormal.

[0032] In one embodiment, the detection module 400 includes a voltage detection module 410 and a current detection module 420, which are respectively used to detect the voltage drop between the battery module contacts and the device contacts and the power supply current of the battery module to the device.

[0033] In one embodiment, the detection module 400 includes: A first sampling line 430 connected to the positive contact 200 and transmitting a signal to the detection module 400; The second sampling line 431 can be connected to the positive contact 600 of the device and transmit a signal to the detection module 400; A third sampling line 432 is connected to the negative electrode contact 300 and transmits a signal to the detection module 400; The fourth sampling line 433 may be connected to the negative contact 700 of the device and transmit a signal to the detection module 400 .

[0034] In this embodiment, the voltage of the positive contact 200 is collected through the first sampling line 430, the second sampling line 431 is used to connect with the positive contact 200 of the external device and collect the voltage of the positive contact 600 of the external device, and the impedance between the positive contact 200 and the positive contact 600 of the device is obtained by the collected voltage of the positive contact 200 and the voltage of the positive contact 600 of the external device and the impedance calculation formula (the voltage drop V of the two voltages is divided by the collected current I. Of course, an operational amplifier can also be used to directly collect the value of the subtraction of the two voltages, and the voltage drop is calculated by subtracting the two voltages), and the voltage of the negative contact 300 is collected through the third sampling line 432, and the fourth sampling line 433 is used to connect with the negative contact 300 of the external device and collect the voltage of the negative contact 700 of the external device. The voltage of the negative contact 300 and the voltage of the negative contact 700 of the external device are calculated by the impedance calculation formula to obtain the impedance between the negative contact 300 and the negative contact 700 of the device. The impedance between the battery module and the device connection end is obtained through the above impedance calculation, or the overall total impedance is calculated through the first sampling line 430 and the third sampling line 432, and the external device impedance is calculated through the second sampling line 431 and the fourth sampling line 433. The impedance between the battery module and the device connection end is obtained by subtracting the device impedance from the total impedance, so as to determine whether the battery module has an installation abnormality. Therefore, the above impedance calculation well solves the problem that the impedance between the battery module and the device connection end cannot be detected in real time, and the detected impedance is not accurate enough, resulting in the inability to accurately determine the connection status between the device and the battery module.

[0035] In one embodiment, the device is provided with a device positive pole detection contact 610 and a device negative pole detection contact 710 respectively connected to the device positive pole contact 600 and the device negative pole contact 700, and the detection module 400 also includes a positive pole detection contact 210 and / or a negative pole detection contact 310, and the positive pole detection contact 210 and the negative pole detection contact 310 can be respectively connected with the device positive pole detection contact 610 and the device negative pole transfer contact, and the second sampling line 431 and the fourth sampling line 433 are respectively connected with the positive pole detection contact 210 and the negative pole detection contact 310.

[0036] In this embodiment, the device is connected to the battery module by connecting the positive contact 600, the negative contact 700, the positive detection contact 610 and the negative detection contact 710 of the device with the positive contact 200, the negative contact 300, the positive detection contact 210 and the negative detection contact 310 of the detection module 400. The battery module supplies power to the device, and the impedance of the connection end between the battery module and the device is detected during power supply, so as to determine whether the battery is normally installed with the device. By setting the positive detection contact 610 of the device and the detection module 40 0 is connected to the positive detection contact 210 of the device, so that the second sampling line 431 detects the voltage of the positive contact 600 of the device, and the negative detection contact 710 of the device is set and connected to the negative detection contact 310 of the detection module 400, so that the fourth sampling line 433 detects the voltage of the negative contact 700 of the device. In fact, two more contacts connected to the device are set on the overall battery module. This contact is used to detect the voltage of the two connection terminals of the device, so as to facilitate the calculation of the impedance between the battery module and the device connection terminal, which is described in detail here.

[0037] It should be noted that, in this expansion, the detection module 400 may not be integrated with the battery module, and may be directly installed in the device, and its sampling line and module are not changed, but the contact connection is opposite to the previous one, such as Figure 3 As shown, the detection module 400 installed on the device can also calculate the impedance between the battery module and the device connection terminal. In order to better protect the present invention, it is explained here.

[0038] In one embodiment, a control module is further included, which can receive the signal from the detection module 400 and output a control signal.

[0039] In this embodiment, an alarm module is also provided in the control module. The control module receives a signal from the detection module 400. When the impedance of the battery module is abnormal, the control module controls the alarm module to sound an alarm, thereby reminding the user to check the device or the battery module to prevent the device from being used for a long time in the case of poor contact, which may reduce the life of the device or the battery module.

[0040] It should be noted that if Figure 2 As shown, the control module includes a battery control module 800 and a power control module 810. The battery control module 800 is used to calculate the sampled voltage and current to obtain the corresponding impedance value, and determine whether to send a signal to the alarm module based on the size of the impedance. The power control module 810 is used to adjust the output power of the device, which is explained here.

[0041] Furthermore, only one control module may be used to control the entire device, which is not limited here.

[0042] One embodiment of the present invention provides a method for detecting abnormal installation of a battery module of a device, wherein the battery module is electrically connected to the device via a connection terminal 900; The device further comprises a detection module 400, which is used to detect the impedance between the battery module and the connection terminal 900 of the device, and determine whether the battery module has installation abnormality according to the size of the impedance.

[0043] In this embodiment, the connection end 900 can be a plug or other component that can be electrically connected to the device, which is not a sole limitation. The detection module 400 is described here to detect the impedance between the battery module and the connection end 900 of the device, and to determine whether the battery module is normally connected to the device through the impedance.

[0044] In one embodiment, the detection module 400 includes a voltage detection module 410 and a current detection module 420, which are respectively used to detect the voltage drop between the battery module connection terminal 900 and the device connection terminal 900 and the power supply current of the battery module to the device, and the impedance between the battery module and the device connection terminal 900 is calculated by the voltage drop and the power supply current.

[0045] In this embodiment, the detection module 400 is powered by the battery body 100. After the battery module is connected to the device, the detection module 400 is used to collect the voltage and current of the line in real time. After the collection is completed, the voltage and current data information collected by the detection module 400 is calculated according to the impedance calculation formula: the voltage drop V at two points divided by the collected current I is used to obtain the impedance R between the battery module and the device connection end. When the battery module is installed in the device, the above module can be used to detect the impedance between the battery module and the device connection end 900 in real time, so as to facilitate the judgment of the connection status of the battery module and the device, so as to understand the contact status of the battery module and the device in real time, ensure the safety of the battery in real time, and check the device in time when the impedance is abnormal.

[0046] In one embodiment, the battery module includes a battery body 100, the battery body 100 includes a positive electrode and a negative electrode, and the battery module connection terminal 900 includes a positive electrode contact 200 and a negative electrode contact 300, and the positive electrode contact 200 and the negative electrode contact 300 are electrically connected to the positive electrode and the negative electrode of the battery body 100 respectively; The device connection terminal 900 includes a device positive contact 600 and a device negative contact 700, which are respectively connected with the positive contact 200 and the negative contact 300; The detection module 400 is used to detect the impedance between the positive contact 200 and the positive contact 600 of the device and / or the impedance between the negative contact 300 and the negative contact 700 of the device; or, to detect the sum of the two impedances between the positive contact 200 and the positive contact 600 of the device and the negative contact 300 and the negative contact 700 of the device; The battery module connection end 900 further includes a positive electrode detection contact 210 and a negative electrode detection contact 310, and the device connection end 900 is correspondingly provided with a device positive electrode detection contact 610 and a device negative electrode detection contact 710. The positive pole detection contact 210 is connected to the positive pole contact 200 or the positive pole detection contact 610 is connected to the positive pole contact 600 of the device, and the negative pole detection contact 310 is connected to the negative pole contact 300 or the negative pole detection contact 710 is connected to the negative pole contact 700 of the device; The settings are: The first sampling line 430 is connected to the positive contact 200 by signal, and the second sampling line 431 is connected to the positive detection contact 210 by signal; or the first sampling line 430 is connected to the positive contact 600 of the device by signal, and the second sampling line 431 is connected to the positive detection contact 610 of the device by signal, and the first sampling line 430 and the second sampling line 431 transmit signals to the detection module 400; The third sampling line 432 is connected to the signal of the negative pole contact 300, and the fourth sampling line 433 is connected to the signal of the negative pole detection contact 310; or, the third sampling line 432 is connected to the signal of the device negative pole contact 700, and the fourth sampling line 433 is connected to the signal of the device negative pole detection contact 710, and the third sampling line 432 and the fourth sampling line 433 transmit signals to the detection module 400.

[0047] In this embodiment, the voltage of the positive contact 200 is collected through the first sampling line 430, and the second sampling line 431 is used to connect with the positive contact 200 of the external device and collect the voltage of the positive contact 600 of the external device. The collected voltage of the positive contact 200 and the voltage of the positive contact 600 of the external device are calculated by the impedance calculation formula (the voltage drop V of the two voltages is divided by the collected current I. Of course, an operational amplifier can also be used to directly collect the value of the subtraction of the two voltages, and the voltage drop is calculated by subtracting the two voltages). The impedance between the positive contact 200 and the positive contact 600 of the device is obtained, and the impedance between the positive contact 200 and the positive contact 600 of the device is obtained through the third sampling line 4 The fourth sampling line 433 is used to connect to the negative electrode contact 300 of the external device and collect the voltage of the negative electrode contact 700 of the external device. The impedance between the negative electrode contact 300 and the negative electrode contact 700 of the external device is obtained by the impedance calculation formula. The impedance between the battery module and the device connection terminal 900 is obtained by the above impedance calculation, or the overall total impedance is calculated by the first sampling line 430 and the third sampling line 432, and the total impedance is calculated by the second sampling line 431 and the fourth sampling line 433. The impedance of the external device is obtained by subtracting the device impedance from the total impedance to obtain the impedance between the battery module and the device connection terminal 900, thereby determining whether the battery module has an installation abnormality; the device positive contact 600, the device negative contact 700, the device positive detection contact 610 and the device negative detection contact 710 are connected with the positive contact 200, the negative contact 300, the positive detection contact 210 and the negative detection contact 310 of the detection module 400, thereby achieving the connection between the device and the battery module. The battery module supplies power to the device, and the impedance between the battery module and the device connection terminal 900 is detected during power supply, thereby determining whether the battery is connected to the device. During normal installation, the positive detection contact 610 of the device is connected to the positive detection contact 210 of the detection module 400, so that the second sampling line 431 detects the voltage of the positive contact 600 of the device, and the negative detection contact 710 of the device is connected to the negative detection contact 310 of the detection module 400, so that the fourth sampling line 433 detects the voltage of the negative contact 700 of the device. In fact, two more contacts connected to the device are set on the overall battery module. This contact is used to detect the voltage of the two connection terminals 900 of the device, so as to facilitate the calculation of the impedance between the battery module and the device connection terminal 900.

[0048] It should be noted that the function of the sampling line is to collect voltage signals. An ordinary signal line can be used. A larger level of resistance is connected in series on the sampling line, that is, there is basically no current in the sampling line, so the sampling line does not need to use a relatively thick normal wire. However, the detection module 400 also needs to detect the line current, so it is also necessary to set a wire to connect the line to detect the current. At this time, the sampling line and the wire for detecting the current can be independent, or the sampling line can be replaced with an ordinary wire, and the current can flow at the same time, so that the wire for detecting the current can be omitted. In another embodiment, only one wire can be used for detecting the current, and one of the sampling lines also serves as another wire for detecting the current.

[0049] It should also be noted that since the sampling line basically does not require current to flow through, it is only used to collect signals. Therefore, the battery module and the device correspond to the detection contacts. As long as the two contacts can touch, signal collection can be completed. It is not like the positive and negative contacts, which must be in good contact (because a large current flows). In this way, when the detection module is located on the battery module, the detection module 400 can easily detect the voltage information of the corresponding contacts of the device through the clever transfer of the detection contacts. The detection module 400 is located on one side of the device, and the same is true, which will not be described in detail.

[0050] In one embodiment, a control module is further included, which can receive the signal of the detection module 400 and output a control signal for controlling the battery module or the equipment power module.

[0051] In this embodiment, if Figure 1 As shown, the control module includes a battery control module 800 and a power control module 810. The battery control module 800 is used to calculate the sampled voltage and current to obtain the corresponding impedance value, and determine whether to send a signal to the alarm module based on the size of the impedance. The power control module 810 is used to adjust the output power of the device, which is explained here.

[0052] It should be noted that only one control module may be used to control the entire device, and this is not a sole limitation.

[0053] Further, such as Figure 4 and Figure 5 As shown, Figure 4The circuit diagram of the voltage detection module 800 for checking each sampling line separately includes three differential amplifier groups. The differential amplifier in each differential amplifier group is connected in parallel with a resistor, because the parallel resistor can provide a damping effect to prevent the differential amplifier from oscillating or transient response instability at the output end. By properly selecting the resistance value, the damping effect of the output signal can be adjusted to make the output more stable. The parallel capacitor and resistor can form a low-pass filter to limit the passage of high-frequency signals and avoid high-frequency oscillation at the output end. This is crucial for stabilizing the performance of the differential amplifier, especially when processing rapidly changing input signals. By connecting resistors in parallel, the impedance of the output end can be reduced and the driving ability of the output end to the load can be improved. It can ensure that the differential amplifier can effectively drive the load and avoid output waveform distortion or instability caused by load changes. Overall, the voltage detected by each differential amplifier group is more accurate, so that the impedance between the battery module and the device connection end 900 can be more accurately calculated.

[0054] Figure 5 8 is a circuit diagram of the voltage detection module 800 detecting the total impedance. The diagram includes three differential amplifier groups for detecting the impedance of the entire circuit. The impedance between the battery module and the device connection terminal 900 is obtained by subtracting the impedance measured by the device from the total impedance.

[0055] Furthermore, the detection methods are diverse. The present application can simultaneously or separately detect the connection status of the positive contact and the negative contact through the setting of positive and negative contacts, detection contacts, sampling lines, etc. It can also comprehensively judge whether there is a connection abnormality by detecting the total impedance at the two positions. The comparison and analysis of multiple detection data improves the accuracy of the detection impedance. With multiple detection methods, even when abnormalities occur in some lines, the detection can be carried out and accurately.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the paper document and the contents of the drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery module, which provides power to an external device by connecting to corresponding contacts of the external device, characterized in that: include: The battery body, including the positive electrode and the negative electrode; A positive electrode contact, electrically connected to the positive electrode of the battery body; A negative electrode contact electrically connected to the negative electrode of the battery body; A detection module, connected to the positive contact and the negative contact, and used to detect the impedance between the positive contact and the corresponding contact of the device and / or the impedance between the negative contact and the corresponding contact of the device; Or, it is used to detect the sum of the impedances between the positive contact and the corresponding contact of the device and between the negative contact and the corresponding contact of the device.

2. A battery module according to claim 1, characterized in that: The detection module includes a voltage detection module and a current detection module, which are respectively used to detect the voltage drop between the battery module contacts and the device contacts and the power supply current from the battery module to the device.

3. A battery module according to claim 1, characterized in that: The detection module comprises: A first sampling line, connected to the positive contact and transmitting a signal to the detection module; A second sampling line, which can be connected to the positive contact of the device and transmit a signal to the detection module; A third sampling line, connected to the negative contact and transmitting a signal to the detection module; The fourth sampling line can be connected to the negative contact of the device and transmit a signal to the detection module.

4. A battery module as claimed in claim 3, characterized in that: The device is provided with a device positive detection contact and a device negative detection contact which are respectively connected to the device positive contact and the device negative contact. The detection module also includes a positive detection contact and / or a negative detection contact. The positive detection contact and the negative detection contact can be respectively connected to the device positive detection contact and the device negative transfer contact. The second sampling line and the fourth sampling line are respectively connected to the positive detection contact and the negative detection contact.

5. A battery module according to claim 1, characterized in that: It also includes a control module, which can receive the detection module signal and output a control signal.

6. A method for detecting abnormal installation of a battery module of a device, wherein the battery module is electrically connected to the device through a connection terminal, characterized in that: It also includes a detection module, which is used to detect the impedance between the battery module and the connection end of the device, and determine whether there is any installation abnormality in the battery module according to the size of the impedance.

7. The method for detecting abnormal installation of a battery module of a device according to claim 6, characterized in that: The detection module includes a voltage detection module and a current detection module, which are respectively used to detect the voltage drop between the battery module connection end and the device connection end and the power supply current of the battery module to the device, and the impedance between the battery module and the device connection end is calculated by the voltage drop and the power supply current.

8. The method for detecting abnormal installation of a battery module of a device according to claim 7, characterized in that: The battery module includes a battery body, the battery body includes a positive electrode and a negative electrode, the battery module connection end includes a positive electrode contact and a negative electrode contact, the positive electrode contact and the negative electrode contact are electrically connected to the positive electrode and the negative electrode of the battery body respectively; The device connection end includes a device positive contact and a device negative contact, which are respectively connected to the positive contact and the negative contact; The detection module is used to detect the impedance between the positive contact and the positive contact of the device and / or the impedance between the negative contact and the negative contact of the device; or, to detect the sum of the two impedances between the positive contact and the positive contact of the device and between the negative contact and the negative contact of the device.

9. The method for detecting abnormal installation of a battery module of a device according to claim 8, characterized in that: The battery module connection end also includes a positive detection contact and a negative detection contact, and the device connection end is correspondingly provided with a device positive detection contact and a device negative detection contact. Among them, the positive pole detection contact is connected to the positive pole contact or the positive pole detection contact of the device is connected to the positive pole contact of the device, and the negative pole detection contact is connected to the negative pole contact or the negative pole detection contact of the device is connected to the negative pole contact of the device.

10. The method for detecting abnormal installation of a battery module of a device according to claim 9, characterized in that: The settings are: The first sampling line is connected to the positive contact signal, and the second sampling line is connected to the positive detection contact signal; or the first sampling line is connected to the positive contact signal of the device, and the second sampling line is connected to the positive detection contact signal of the device, and the first sampling line and the second sampling line transmit signals to the detection module; The third sampling line is connected to the negative pole contact signal, and the fourth sampling line is connected to the negative pole detection contact signal; or, the third sampling line is connected to the negative pole contact signal of the device, and the fourth sampling line is connected to the negative pole detection contact signal of the device, and the third sampling line and the fourth sampling line transmit signals to the detection module.

11. The method for detecting abnormal installation of a battery module of a device according to claim 6, characterized in that: It also includes a control module that can receive the signal from the detection module and output a control signal for controlling the battery module or the equipment power module.

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