CN115754763A - Detection circuit, detection method, device and storage medium of battery - Google Patents
Detection circuit, detection method, device and storage medium of battery Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
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Abstract
The application relates to a detection circuit, a detection method, a device and a storage medium of a battery. The detection circuit is arranged between the battery and an external circuit and comprises a first switch module and a second switch module which are connected in parallel, the first switch module comprises a first switch tube and a second switch tube which are connected in series, the second switch module comprises a third switch tube and a fourth switch tube which are connected in series, and the detection method comprises the following steps: controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed; collecting a detection voltage value through a first voltage collecting end between a first switching tube and a second switching tube or a second voltage collecting end between a third switching tube and a fourth switching tube; and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to a comparison result of the detection voltage value and the voltage value of the battery. Therefore, the state of each switch tube can be detected quickly, effectively and comprehensively, and the state of the battery access can be detected.
Description
Technical Field
The present disclosure relates to the field of battery technologies, and in particular, to a battery detection circuit, a battery detection method, a battery detection device, and a storage medium.
Background
At present, lithium batteries are relatively mature, compared with traditional lead-acid batteries, the low-voltage lithium batteries for vehicles have the advantages of light weight, small size, long battery recycling time, environmental friendliness and the like, and the low-voltage lithium batteries for vehicles gradually replace the traditional lead-acid batteries.
Although the low-voltage lithium battery has many advantages compared with the traditional lead-acid battery, the lead-acid battery still occupies the mainstream market, in comparison, the low-voltage lithium battery is still in the starting stage, in addition, the control is relatively complex, and a proper fault reliable and comprehensive fault diagnosis scheme is not provided for the diagnosis part of the low-voltage lithium battery.
Disclosure of Invention
In view of the above, it is necessary to provide a detection circuit, a detection method, a device and a storage medium for a battery, which can perform a complete and reliable failure diagnosis of the battery.
In a first aspect, the present application further provides a detection method for a detection circuit based on a battery, where the detection circuit is disposed between the battery and an external circuit, and includes a first switch module and a second switch module connected in parallel, the first switch module includes a first switch tube and a second switch tube connected in series, and a first voltage collection end of the first switch tube and a first voltage collection end of the second switch tube, and the second switch module includes a third switch tube and a fourth switch tube connected in series, and a second voltage collection end of the third switch tube and the fourth switch tube;
the detection method comprises the following steps:
controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed;
collecting a detection voltage value through the first voltage collecting end or the second voltage collecting end;
and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to the comparison result of the detection voltage value and the voltage value of the battery.
In one embodiment, the method further comprises:
controlling the first switching tube and the third switching tube to be closed, and controlling the second switching tube and the fourth switching tube to be turned off;
collecting a first detection voltage value through the first voltage collecting end or collecting a second detection voltage value through the second voltage collecting end;
and determining that the first switching tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, and determining that the third switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
In one embodiment, when the difference between the first detection voltage value and the voltage value of the battery is not greater than a preset voltage threshold value or the difference between the second detection voltage value and the voltage value of the battery is not greater than the preset voltage threshold value, the first switching tube and the second switching tube are controlled to be closed, and the third switching tube and the fourth switching tube are controlled to be closed;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the third switching tube or the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
In one embodiment, when the difference value between the second detection voltage value and the voltage value of the battery is not less than a preset voltage threshold value, the first switching tube, the second switching tube and the fourth switching tube are controlled to be closed, and the third switching tube is controlled to be closed;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
In one embodiment, when the difference value between the second detection voltage value and the voltage value of the battery is not greater than a preset voltage threshold value, the third switching tube and the fourth switching tube are controlled to be closed, and the first switching tube and the third switching tube are turned off;
collecting a first detection voltage value through the first voltage collection end;
and determining that the first switch tube or the second switch tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
In one embodiment, when the difference value between the first detection voltage value and the voltage value of the battery is not less than a preset voltage threshold value, the second switching tube, the third switching tube and the fourth switching tube are controlled to be closed, and the first switching tube is turned off;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, and otherwise determining that the first switching tube, the second switching tube, the third switching tube and the fourth switching tube have no fault.
In a second aspect, the present application further provides a detection circuit for a battery, which is disposed between the battery and an external circuit, the detection circuit includes a first switch module and a second switch module connected in parallel, wherein:
the first switch module comprises a first switch tube and a second switch tube which are connected in series, the control ends of the first switch tube and the second switch tube are both electrically connected with a controller, and a first voltage sampling end is arranged between the first switch tube and the second switch tube;
the second switch module comprises a third switch tube and a fourth switch tube which are connected in series, the control ends of the third switch tube and the fourth switch tube are both electrically connected with the controller, and a second voltage sampling end is arranged between the third switch tube and the fourth switch tube;
the controller is used for controlling the control ends of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube so as to control the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and closed.
In one embodiment, the detection circuit further includes a first diode, a second diode, a third diode and a fourth diode respectively connected in parallel with the first switching tube, the second switching tube, the third switching tube and the fourth switching tube.
In a third aspect, the present application also provides a computer device. The computer arrangement comprises a memory having a computer program stored therein and a processor implementing the steps as described above when executing the computer program.
In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the preceding.
The detection circuit is arranged between the battery and an external circuit and comprises a first switch module and a second switch module which are connected in parallel, wherein the first switch module comprises a first switch tube and a second switch tube which are connected in series, and a first voltage acquisition end of the first switch tube and a first voltage acquisition end of the second switch tube; the detection method comprises the following steps: controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed; collecting a detection voltage value through the first voltage collecting end or the second voltage collecting end; and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to the comparison result of the detection voltage value and the voltage value of the battery. The control end respectively controls different switch tubes to be switched on and switched off, so that the states of all the switch tubes on the detection circuit can be detected comprehensively and reliably.
Drawings
FIG. 1 is a schematic diagram of the circuit configuration of the detection circuit in one embodiment;
FIG. 2 is a flow diagram illustrating a method for battery based detection in one embodiment;
FIG. 3 is a block diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, fig. 1 is a schematic circuit structure diagram of a detection circuit of a battery according to an embodiment of the present disclosure. As shown in fig. 1. The detection circuit 10 is provided between the battery and an external circuit. It should be noted that the detection circuit of the present application is a path between the battery and the external circuit, and is also a detection circuit for detecting whether the battery and the external circuit are conducted.
The detection circuit 10 comprises a first switch module 11 and a second switch module 12 connected in parallel.
The first switch module 11 includes a first switch tube 111 and a second switch tube 112 connected in series, and control ends of the first switch tube 111 and the second switch tube 112 are both electrically connected to a controller. For example, the first switch tube 111 is electrically connected to the controller D1, and the second switch tube 112 is electrically connected to the controller D2. A first voltage sampling terminal C1 is disposed between the first switch tube 111 and the second switch tube 112. Therefore, the control ends of the first switch tube 111 and the second switch tube 112 can be controlled by the controllers D1 and D2, respectively, so as to control the on and off of the first switch tube 111 and the second switch tube 112. And the detection voltage value can be acquired through the first voltage sampling end C1.
The second switch module 12 includes a third switch tube 121 and a fourth switch tube 122 connected in series, and control ends of the third switch tube 121 and the fourth switch tube 122 are both electrically connected to the controller, for example, the third switch tube 121 is electrically connected to the controller D3, and the fourth switch tube 122 is electrically connected to the controller D4. A second voltage sampling terminal C2 is disposed between the third switching tube 121 and the fourth switching tube 122. Therefore, the control ends of the third switching tube 121 and the fourth switching tube 122 can be controlled by the controllers D3 and D4, respectively, so as to control the third switching tube 121 and the fourth switching tube 122 to be turned on and off. And the detection voltage value can be acquired through the second voltage sampling end C2. The first switch tube 111, the second diode 112, the third diode 121, and the fourth diode 122 in this application are MOS tubes, and may be NMOS tubes.
Further, the detection circuit 10 further includes a first diode 113, a second diode 114, a third diode 123, and a fourth diode 124 connected in parallel with the first switching tube 111, the second diode 112, the third diode 121, and the fourth diode 122, respectively. The first diode 113 and the second diode 114 have different conduction directions. The third diode 123 and the fourth diode 124 have different conduction directions. Since the battery can be powered to the external circuit through the detection circuit 10, the external circuit can also supply power to the battery through the detection circuit 10 when the battery is in a low state of charge. The battery and the external circuit are thus the process of two-way communication. The first diode 113, the second diode 114, the third diode 123 and the fourth diode 124 can ensure the normal state of the circuit when the corresponding switch tube fails.
Therefore, the present application realizes the fault detection of the battery and the external circuit by designing a set of fault detection method matched with the circuit on the basis of the existing detection circuit 10 (i.e. the circuit already arranged between the battery and the external circuit). Specific detection methods are described in detail below.
Referring to fig. 2, fig. 2 is a detection method of the present application based on the battery detection circuit 10 shown in fig. 1.
As shown in fig. 2, the detection method of the embodiment of the present application includes the following steps:
step S1: controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed;
step S2: collecting a detection voltage value through a first voltage collecting end between the first switching tube and the second switching tube or a second voltage collecting end between the third switching tube and the fourth switching tube;
and step S3: and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to the comparison result of the detection voltage value and the voltage value of the battery.
Therefore, the embodiment of the application can control different switch tubes to be switched on and off respectively through the control end, can realize the detection of the states of all the switch tubes on the detection circuit, and is comprehensive and reliable. The method can ensure that the electronic equipment, such as a vehicle control unit VCU, keeps being electrified when being electrified, and the phenomenon of instant power failure caused by the detection of the switching tube can be avoided. And the detection method can finish detection only at the power-on moment, and the detection time is short.
In an embodiment, the first switching tube 111 and the third switching tube 121 may be controlled to be closed first, and the second switching tube 112 and the fourth switching tube 122 may be controlled to be closed. That is, the control end D1 controls the first switching tube 11 to be closed, the control end D3 controls the third switching tube 121 to be closed, the control end D2 controls the second switching tube 112 to be turned off, and the control end D4 controls the fourth switching tube 122 to be turned off. And then, a first detection voltage value is acquired through the first voltage acquisition terminal C1 or a second detection voltage value is acquired through the second voltage acquisition terminal C2. When the difference between the first detected voltage value and the voltage value of the battery is greater than a preset voltage threshold, it is determined that the first switching tube 111 has a fault, for example, it is determined that the first switching tube 111 is stuck. When the difference between the second detected voltage value and the voltage value of the battery is greater than a preset voltage threshold value, it is determined that the third switching tube 121 has a fault, for example, it is determined that the third switching tube 121 is stuck. That is to say, under the closed state of first switch tube 111, the battery end is the state of route to first voltage acquisition end C1 under the normal condition, can not produce very big voltage drop, the difference between the voltage of battery end and the first detection voltage value that first acquisition end C1 gathered can not be too big promptly, if first switch tube 111 breaks down, on leading to the closure not, then the state for opening circuit of battery end to first voltage sampling end C1, great pressure differential can appear for both, consequently can confirm whether first switch tube 111 breaks down through judging the pressure differential between battery end and the first voltage sampling end C1. Similarly, the third switch 121 and other switches are determined as follows.
When the difference between the first detection voltage value and the voltage value of the battery is not greater than the preset voltage threshold value or the difference between the second detection voltage value and the voltage value of the battery is not greater than the preset voltage threshold value, that is, when the first switching tube 111 or the third switching tube 113 is not failed, the first switching tube 111 is further controlled to be closed through the control end D1, the second switching tube 112 is controlled to be closed through the control end D2, the third switching tube 121 is controlled to be turned off through the control end D3, and the fourth switching tube 122 is controlled to be turned off through the control end D4.
And further collecting a second detection voltage value through the second voltage collecting end C2. And compares the second detected voltage value with the voltage value of the battery. When the difference between the second detected voltage value and the voltage value of the battery is smaller than a preset voltage threshold value, it is determined that the third switching tube 121 or the fourth switching tube 122 has a fault, for example, the third switching tube 121 or the fourth switching tube 122 is sticky.
When the difference between the second detection voltage value and the voltage value of the battery is not less than the preset voltage threshold value, that is, when the third switching tube 121 and the fourth switching tube 122 do not have a fault, the first switching tube 111 is controlled to be closed through the control end D1, the second switching tube 112 is controlled to be closed through the control end D2, the fourth switching tube 122 is controlled to be closed through the control end D3, and the third switching tube 121 is controlled to be turned off through the control end D3. And then a second detection voltage value is acquired through the second voltage acquisition terminal C2. When the difference between the second detected voltage value and the voltage value of the battery is greater than a preset voltage threshold, it is determined that the fourth switching tube 122 has a fault, for example, the fourth switching tube 122 is stuck.
When the difference between the second detected voltage value and the voltage value of the battery is not greater than the preset voltage threshold, that is, when the fourth switching tube 122 has no fault, the control terminal D3 controls the third switching tube 121 to be closed, the control terminal D4 controls the fourth switching tube 122 to be closed, the control terminal D1 controls the first switching tube 111 to be turned off, and the control terminal D3 controls the third switching tube 121 to be turned off. And further collecting a first detection voltage value through the first voltage collecting end C1. And determining that the first switch tube 111 or the second switch tube 112 has a fault when the difference between the first detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold. For example, the first switch tube 111 or the second switch tube 112 is glued.
When the difference between the first detection voltage value and the voltage value of the battery is not smaller than the preset voltage threshold value, namely, when the first switch tube 111 and the second switch tube 112 do not have faults, the second switch tube 112 is controlled to be closed through the control end D2, the third switch tube 121 is controlled to be closed through the control end D3, the fourth switch tube 122 is controlled to be closed through the control end D4, and the first switch tube 111 is controlled to be turned off through the control end D1.
And further collecting a second detection voltage value through the second voltage collecting end C2. When the difference between the second detected voltage value and the voltage value of the battery is greater than a preset voltage threshold value, it is determined that the fourth switching tube 122 has a fault, such as a clamping stagnation. Otherwise, it is determined that the first switching tube 111, the second switching tube 112, the third switching tube 121, and the fourth switching tube 122 are not faulty.
Therefore, the detection method is designed on the detection circuit, and all switch tubes on the detection circuit are subjected to traversal detection step by step according to the detection method, so that the detection method is comprehensive and reliable. The detection method can ensure that the electronic equipment, such as a vehicle control unit VCU, keeps being electrified when being electrified, and the phenomenon of instant power failure caused by the detection of the switching tube can be avoided. And the detection method can finish detection only at the power-on moment, and the detection time is short.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The database of the computer device is used for storing the detection method data of the battery. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a detection method for a battery-based detection circuit.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 3. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of detection of a battery-based detection circuit as described above. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the configuration shown in fig. 3 is a block diagram of only a portion of the configuration associated with the present application, and is not intended to limit the computing device to which the present application may be applied, and that a particular computing device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
step S1: controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed;
step S2: collecting a detection voltage value through a first voltage collecting end between the first switching tube and the second switching tube or a second voltage collecting end between the third switching tube and the fourth switching tube;
and step S3: and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to the comparison result of the detection voltage value and the voltage value of the battery.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
controlling the first switching tube and the third switching tube to be closed, and turning off the second switching tube and the fourth switching tube;
collecting a first detection voltage value through the first voltage collecting end or collecting a second detection voltage value through the second voltage collecting end;
and determining that the first switching tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, and determining that the third switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
when the difference value between the first detection voltage value and the voltage value of the battery is not larger than a preset voltage threshold value or the difference value between the second detection voltage value and the voltage value of the battery is not larger than the preset voltage threshold value, controlling the first switching tube and the second switching tube to be closed, and turning off the third switching tube and the fourth switching tube;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the third switching tube or the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
In one embodiment, the processor when executing the computer program further performs the steps of:
when the difference value between the second detection voltage value and the voltage value of the battery is not smaller than a preset voltage threshold value, the first switch tube, the second switch tube and the fourth switch tube are controlled to be closed, and the third switch tube is switched off;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
when the difference value between the second detection voltage value and the voltage value of the battery is not larger than a preset voltage threshold value, controlling the third switching tube and the fourth switching tube to be closed, and switching off the first switching tube and the third switching tube;
collecting a first detection voltage value through the first voltage collection end;
and determining that the first switch tube or the second switch tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
when the difference value between the first detection voltage value and the voltage value of the battery is not smaller than a preset voltage threshold value, the second switching tube, the third switching tube and the fourth switching tube are controlled to be closed, and the first switching tube is switched off;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, and otherwise determining that the first switching tube, the second switching tube, the third switching tube and the fourth switching tube have no fault.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out all the steps of the detection method described hereinbefore below.
It should be noted that, the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, databases, or other media used in the embodiments provided herein can include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example. The databases involved in the embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. The detection method of the detection circuit based on the battery is characterized in that the detection circuit is arranged between the battery and an external circuit and comprises a first switch module and a second switch module which are connected in parallel, the first switch module comprises a first switch tube and a second switch tube which are connected in series, and a first voltage acquisition end of the first switch tube and a first voltage acquisition end of the second switch tube, the second switch module comprises a third switch tube and a fourth switch tube which are connected in series, and a second voltage acquisition end of the third switch tube and the fourth switch tube;
the detection method comprises the following steps:
controlling at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and at least one of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed;
collecting a detection voltage value through the first voltage collecting end or the second voltage collecting end;
and judging whether the first switching tube, the second switching tube, the third switching tube and the fourth switching tube are abnormal or not according to the comparison result of the detection voltage value and the voltage value of the battery.
2. The method of claim 1, further comprising:
controlling the first switching tube and the third switching tube to be closed, and turning off the second switching tube and the fourth switching tube;
collecting a first detection voltage value through the first voltage collecting end or collecting a second detection voltage value through the second voltage collecting end;
and determining that the first switching tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, and determining that the third switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
3. The method of claim 2, wherein the method comprises:
when the difference value between the first detection voltage value and the voltage value of the battery is not larger than a preset voltage threshold value or the difference value between the second detection voltage value and the voltage value of the battery is not larger than the preset voltage threshold value, controlling the first switching tube and the second switching tube to be closed, and turning off the third switching tube and the fourth switching tube;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the third switching tube or the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
4. The method of claim 3, further comprising:
when the difference value between the second detection voltage value and the voltage value of the battery is not smaller than a preset voltage threshold value, the first switch tube, the second switch tube and the fourth switch tube are controlled to be closed, and the third switch tube is switched off;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value.
5. The method of claim 4, further comprising:
when the difference value between the second detection voltage value and the voltage value of the battery is not larger than a preset voltage threshold value, controlling the third switching tube and the fourth switching tube to be closed, and switching off the first switching tube and the third switching tube;
collecting a first detection voltage value through the first voltage collection end;
and determining that the first switching tube or the second switching tube has a fault when the difference value between the first detection voltage value and the voltage value of the battery is smaller than a preset voltage threshold value.
6. The method of claim 5, further comprising: when the difference value between the first detection voltage value and the voltage value of the battery is not smaller than a preset voltage threshold value, the second switching tube, the third switching tube and the fourth switching tube are controlled to be closed, and the first switching tube is switched off;
collecting a second detection voltage value through the second voltage collecting end;
and determining that the fourth switching tube has a fault when the difference value between the second detection voltage value and the voltage value of the battery is greater than a preset voltage threshold value, otherwise determining that the first switching tube, the second switching tube, the third switching tube and the fourth switching tube have no fault.
7. A detection circuit of a battery, characterized in that, set up between battery and external circuit, detection circuit includes parallelly connected first switch module and second switch module, wherein:
the first switch module comprises a first switch tube and a second switch tube which are connected in series, the control ends of the first switch tube and the second switch tube are electrically connected with a controller, and a first voltage sampling end is arranged between the first switch tube and the second switch tube;
the second switch module comprises a third switch tube and a fourth switch tube which are connected in series, the control ends of the third switch tube and the fourth switch tube are electrically connected with the controller, and a second voltage sampling end is arranged between the third switch tube and the fourth switch tube;
the controller is used for controlling the control ends of the first switching tube, the second switching tube, the third switching tube and the fourth switching tube so as to control the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be closed and closed.
8. The detection circuit of claim 7, further comprising a first diode, a second diode, a third diode, and a fourth diode connected in parallel with the first switch tube, the second switch tube, the third switch tube, and the fourth switch tube, respectively.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 6.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441885.XA CN115754763A (en) | 2022-11-17 | 2022-11-17 | Detection circuit, detection method, device and storage medium of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441885.XA CN115754763A (en) | 2022-11-17 | 2022-11-17 | Detection circuit, detection method, device and storage medium of battery |
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| CN115754763A true CN115754763A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211441885.XA Pending CN115754763A (en) | 2022-11-17 | 2022-11-17 | Detection circuit, detection method, device and storage medium of battery |
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| Country | Link |
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| CN (1) | CN115754763A (en) |
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