Battery detection circuit and vehicle

Abstract

The utility model discloses a battery detection circuit and vehicle. The battery detection circuit includes: detection chip, battery and voltage regulation equipment, wherein, detection chip is connected with multiple electric core in battery and voltage regulation equipment respectively, is used for detecting first electric core voltage on multiple electric core and first shunt voltage on voltage regulation equipment, voltage regulation equipment is connected with battery, is used for adjusting first electric core voltage in battery and first shunt voltage, detection chip is still used for determining the operation state of battery corresponding with adjusted first electric core voltage and adjusted first shunt voltage. The utility model solves the technical problem that the determination accuracy of battery state is low.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuits, and more specifically, to a battery detection circuit and a vehicle. Background Technology

[0002] Currently, with the development of vehicles, battery status estimation has become increasingly important. However, in existing technologies, battery status is often judged solely based on the battery's usage time after charging. This method of battery status estimation has limitations, resulting in low accuracy in determining battery status.

[0003] There is currently no effective solution to the technical problem of low accuracy in determining battery status. Utility Model Content

[0004] This utility model provides a battery detection circuit and a vehicle to at least solve the technical problem of low accuracy in determining battery status.

[0005] According to one aspect of the present invention, a battery detection circuit is provided, comprising: a detection chip, a battery, and a voltage adjustment device. The detection chip is connected to a plurality of battery cells and the voltage adjustment device, respectively, for detecting a first cell voltage on the plurality of battery cells and a first shunt voltage on the voltage adjustment device. The voltage adjustment device is connected to the battery for adjusting the first cell voltage and the first shunt voltage in the battery. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage.

[0006] Optionally, the voltage adjustment device includes a target switch and a shunt device, wherein the target switch is used to switch the current frequency of the current in the cell detection circuit; the shunt device is connected to the target switch and is used to adjust the first cell voltage and the first shunt voltage by triggering the current frequency after switching.

[0007] Optionally, the detection chip includes a first detection chip and a second detection chip, wherein the first detection chip is used to determine a first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment; the second detection chip is connected to the first detection chip and is used to convert the first voltage change and the resistance of the shunt device into a current change of the shunt device.

[0008] Optionally, the first detection chip is further configured to determine a second voltage change between the adjusted first cell voltage and the original first cell voltage; the second detection chip is further configured to determine the operating state corresponding to the second voltage change and the current change.

[0009] Optionally, the second detection chip is also used to transform the second voltage change and the current change, and to determine the operating state corresponding to the transformed second voltage change and the transformed current change.

[0010] Optionally, the second detection chip is also used to convert the transformed second voltage change and the transformed current change into an operating state.

[0011] Optionally, the diversion device includes a diverter.

[0012] Optionally, the battery includes: a storage battery.

[0013] Optionally, the detection chip includes: an analog front-end chip.

[0014] According to another aspect of the present invention, a vehicle is also provided, the vehicle including any of the above-described battery detection circuits.

[0015] In this embodiment of the invention, the battery detection circuit includes: a detection chip, a battery, and a voltage adjustment device. The detection chip is connected to multiple battery cells in the battery and the voltage adjustment device, respectively, and is used to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device is connected to the battery and is used to adjust the first cell voltage and the first shunt voltage in the battery. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage. In this embodiment of the invention, when determining the operating state of the battery, the detection chip in the battery detection circuit can detect the first cell voltage on multiple cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device adjusts the first cell voltage and the first shunt voltage. The detection chip can also determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage, that is, determine whether the battery is in a normal operating state or an abnormal operating state. This achieves the purpose of determining the battery's state information, thereby solving the technical problem of low accuracy in determining the battery state and thus achieving the technical effect of improving the accuracy of determining the battery state. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of a battery detection circuit according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of a detection circuit for cell EIS estimation according to an embodiment of the present invention;

[0019] Figure 3 This is a structural block diagram of a vehicle according to an embodiment of the present utility model. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a system, product, or device comprising a series of units is not necessarily limited to those explicitly listed, but may include other units not explicitly listed or inherent to such products or devices.

[0022] Figure 1 This is a schematic diagram of a battery detection circuit according to an embodiment of the present utility model. The battery detection circuit 10 includes: a detection chip 101, a battery 102, and a voltage adjustment device 103.

[0023] The detection chip 101 is connected to multiple battery cells 1021 to 102n in the battery 102 and the voltage adjustment device 103, respectively, and is used to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device.

[0024] In the technical solution provided by the detection chip 101 of this utility model, the detection chip 101 can be connected to multiple battery cells 1021 to 102n in the battery 102 and a voltage adjustment device 103, respectively. The voltage adjustment device 103 may include a target switch and a shunt device. For example, the target switch may be a switch used to switch the current of the battery cell detection circuit from the current to different frequencies; the target switch may also be called an external switch. The shunt device 103 may be a shunt, and the first shunt voltage may be the shunt voltage on the shunt.

[0025] In this embodiment, if the battery connected to the detection chip changes, the number of the plurality of battery cells also changes accordingly. That is, if the battery connected to the detection chip changes from a battery manufactured by Factory A to a battery manufactured by Factory B, the number of the plurality of battery cells also changes to the number of battery cells included in the battery manufactured by Factory B. For example, the number of the plurality of battery cells can be, but is not limited to, 18 (or can be expressed as 18 cells).

[0026] In this embodiment, the detection chip is connected to multiple battery cells and a voltage adjustment device, respectively, to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device. Optionally, this embodiment deploys a detection chip on the battery detection circuit described above; the detection chip can detect the first cell voltage on multiple battery cells and the first shunt voltage on the voltage adjustment device when the target switch is closed. For example, the detection chip can detect the first cell voltage on 17 battery cells and the first shunt voltage on the shunt when the external switch is closed.

[0027] The voltage adjustment device 103 is connected to the battery and is used to adjust the voltage of the first cell in the battery and the first shunt voltage.

[0028] In the technical solution provided by the voltage adjustment device 103 of this utility model, the voltage adjustment device 103 can be connected to a battery.

[0029] In this embodiment, a voltage adjustment device is connected to the battery and is used to adjust the voltage of the first cell and the first shunt voltage in the battery. Optionally, in this embodiment, a voltage adjustment device is deployed on the battery detection circuit. A target switch in the deployed voltage adjustment device can trigger the adjustment of the first cell voltage and the adjustment of the first shunt voltage when the current frequency of the cell detection circuit is switched.

[0030] Optionally, if the different frequencies to be switched to include a first frequency and a second frequency, and the first frequency is greater than the second frequency, then the target switch can obtain a current that satisfies the first frequency when switching the current's current to the first frequency, and then adjust the first cell voltage according to the current that satisfies the first frequency; and adjust the first shunt voltage according to the current that satisfies the first frequency.

[0031] Optionally, the deployed target switch can obtain a current that satisfies the second frequency when switching the current from its current frequency to the second frequency, and then adjust the voltage of the first cell according to the current that satisfies the second frequency; and adjust the first shunt voltage according to the current that satisfies the second frequency.

[0032] The detection chip 101 is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage.

[0033] In the technical solution provided by the detection chip 101 of this utility model, the above-mentioned operating state can be used to indicate the normal operating state or abnormal operating state of the battery.

[0034] In this embodiment, the above-mentioned operating state may include: battery charge status, temperature change status, and power consumption duration.

[0035] In this embodiment, the aforementioned power status can be used to indicate an abnormal power status or a normal power status.

[0036] In this embodiment, the aforementioned temperature change state can be used to represent an abnormal temperature change state or a normal temperature change state.

[0037] In this embodiment, the aforementioned power consumption duration can be used to represent abnormal power consumption duration or normal power consumption duration.

[0038] In this embodiment, the detection chip is further used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage. Optionally, in this embodiment, the deployed detection chip can detect the first shunt voltage before adjustment; the deployed detection chip can determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage based on the adjusted first cell voltage and the first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment, thereby achieving the purpose of determining whether the battery's operating state is a normal operating state or an abnormal operating state.

[0039] In this invention, the battery detection circuit includes: a detection chip, a battery, and a voltage adjustment device. The detection chip is connected to multiple battery cells and the voltage adjustment device respectively, and is used to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device is connected to the battery and is used to adjust the first cell voltage and the first shunt voltage in the battery. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage. In this embodiment of the invention, when determining the operating state of the battery, the detection chip in the battery detection circuit can detect the first cell voltage on multiple cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device adjusts the first cell voltage and the first shunt voltage. The detection chip can also determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage, that is, determine whether the battery is in a normal operating state or an abnormal operating state. This achieves the purpose of determining the battery's state information, thereby solving the technical problem of low accuracy in determining the battery state and thus achieving the technical effect of improving the accuracy of determining the battery state.

[0040] The voltage adjustment device described in this embodiment will be further described below.

[0041] As an alternative example, the voltage regulation device includes a target switch and a shunt device, wherein the target switch is used to switch the current frequency of the current in the cell detection circuit; and the shunt device, connected to the target switch, is used to trigger the adjustment of the first cell voltage and the first shunt voltage by the switched current frequency.

[0042] In this embodiment, the target switch in the voltage adjustment device can switch the current frequency of the cell detection circuit to a first frequency or a second frequency.

[0043] In this embodiment, a shunt device connected to the target switch can trigger the adjustment of the first cell voltage and the first shunt voltage based on the switched current frequency. For example, if the current frequency of the current in the cell detection circuit has switched to the first frequency, the shunt device can trigger the adjustment of the first cell voltage and the first shunt voltage based on the switched current frequency; if the current frequency of the current in the cell detection circuit has switched to the second frequency, the shunt device can trigger the adjustment of the first cell voltage and the first shunt voltage based on the switched current frequency. This achieves the goal of adjusting the first cell voltage and the first shunt voltage, thereby improving the technical effect of voltage adjustment efficiency.

[0044] The detection chip described in this embodiment will be further described below.

[0045] As an optional example, the detection chip includes a first detection chip and a second detection chip, wherein the first detection chip is used to determine a first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment; and the second detection chip is connected to the first detection chip and is used to convert the first voltage change and the resistance of the shunt device into a current change of the shunt device.

[0046] In this embodiment, the detection chip may include a first detection chip and a second detection chip, wherein the first detection chip and the second detection chip perform different functions.

[0047] In this embodiment, the first detection chip is used to determine the first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment. Optionally, the first detection chip can detect the first shunt voltage before adjustment and then determine the first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment, thereby achieving the purpose of determining the voltage change between the first shunt voltage before and after adjustment.

[0048] In this embodiment, the second detection chip, connected to the first detection chip, is used to convert the first voltage change and the resistance of the shunt device into the current change of the shunt device. Optionally, the second detection chip connected to the first detection chip can convert the first voltage change and the resistance of the shunt device into the current change of the shunt device. For example, by calculating the quotient of the first voltage change and the resistance of the shunt device, the current change of the shunt device can be obtained. This achieves the purpose of determining the current change of the shunt device and realizes the technical effect of improving the flexibility of current adjustment.

[0049] The detection chip described in this embodiment will be further explained below.

[0050] As an optional example, the first detection chip is further configured to calculate the difference between the adjusted first shunt voltage and the original first shunt voltage to obtain a first voltage difference between the adjusted first shunt voltage and the original first shunt voltage, and to determine the first voltage change as the first voltage difference; the second detection chip is further configured to calculate the quotient between the first voltage difference and the resistance to obtain a first quotient between the first voltage difference and the resistance, and to determine the current change as the first quotient.

[0051] In this embodiment, the first detection chip can calculate the difference between the adjusted first shunt voltage and the first shunt voltage before adjustment to obtain the first voltage difference between the adjusted first shunt voltage and the first shunt voltage before adjustment, and determine the first voltage change as the first voltage difference, thereby achieving the purpose of determining the voltage change between the first shunt voltage before and after adjustment.

[0052] In this embodiment, the second detection chip can determine the current change of the shunt device based on the first voltage change and the resistance of the shunt device. Optionally, the detection chip can calculate the quotient between the first voltage difference and the resistance of the shunt device to obtain a first quotient between the first voltage difference and the resistance, and determine the obtained first quotient as the current change of the shunt device. This achieves the purpose of converting the first voltage change and the resistance of the shunt device into the current change of the shunt device, realizing the technical effect of improving the flexibility of current adjustment.

[0053] The detection chip described in this embodiment will be further explained below.

[0054] As an optional example, the first detection chip is also used to determine a second voltage change between the adjusted first cell voltage and the first cell voltage before adjustment; the second detection chip is also used to determine the operating state corresponding to the second voltage change and the current change.

[0055] In this embodiment, the first detection chip can determine the second voltage change between the adjusted first cell voltage and the first cell voltage before adjustment. In other words, the first detection chip can detect the first cell voltage before adjustment and then determine the second voltage change between the adjusted first cell voltage and the first cell voltage before adjustment, thereby achieving the purpose of determining the voltage change between the first cell voltage before and after adjustment.

[0056] In this embodiment, the second detection chip can determine the operating state corresponding to the second voltage change and the second current change. That is, the second detection chip transforms the second voltage change and the second current change, and based on the transformed second voltage change and the transformed current change, the operating state corresponding to the second voltage change and the current change can be determined. This achieves the goal of determining whether the battery's operating state is normal or abnormal, thus improving the accuracy of battery state determination.

[0057] The second detection chip described in this embodiment will be further explained below.

[0058] As an optional example, the second detection chip is also used to transform the second voltage change and the current change, and to determine the operating state corresponding to the transformed second voltage change and the transformed current change.

[0059] In this embodiment, the second detection chip can calculate the difference between the adjusted first cell voltage and the first cell voltage before adjustment to obtain the second voltage difference between the adjusted first cell voltage and the first cell voltage before adjustment, and determine the second voltage change as the second voltage difference, thereby achieving the purpose of determining the voltage change between the first cell voltage before and after adjustment.

[0060] In this embodiment, the second voltage change after the transformation can be represented by ▲V.

[0061] In this embodiment, the change in current after the transformation can be represented by ▲I.

[0062] In this embodiment, the second detection chip transforms the second voltage change and the current change, and determines the operating state corresponding to the transformed second voltage change and the transformed current change. This achieves the purpose of determining whether the battery is in a normal operating state or an abnormal operating state, and realizes the technical effect of improving the accuracy of battery state determination.

[0063] The second detection chip described in this embodiment will be further explained below.

[0064] As an optional example, the second detection chip is also used to convert the transformed second voltage change and the transformed current change into an operating state.

[0065] In this embodiment, the second quotient between the transformed second voltage change and the transformed current change can be used to represent the cell electrochemical impedance spectroscopy (EIS) characteristics of the battery. The correspondence between the second quotient and the state information can be used to represent the correspondence between the battery's EIS characteristics and the battery's internal state.

[0066] In this embodiment, the second detection chip can calculate the quotient between the transformed second voltage change and the transformed current change to obtain a second quotient between the transformed second voltage change and the transformed current change. Based on the correspondence between the battery EIS characteristics and the battery's internal state, the operating state corresponding to the second quotient can be determined. This achieves the goal of converting the transformed second voltage change and the transformed current change into an operating state, thereby improving the accuracy of battery state determination.

[0067] The following is a further description of the diversion device described in this embodiment.

[0068] As an optional example, the splitter device includes: a splitter.

[0069] In this embodiment, the shunt is a low-resistance precision resistor that can be used to accurately measure the current in the circuit. When current flows through the shunt, according to Ohm's law, a small voltage drop proportional to the current is generated.

[0070] The state information of the battery described in this embodiment will be further explained below.

[0071] As an optional example, the battery includes: a storage battery.

[0072] In this embodiment, the storage battery can be classified as: lead-acid battery, nickel-cadmium battery, lithium battery, and graphene battery, etc. This is only an example and is not a specific limitation.

[0073] The detection chip described in this embodiment will be further explained below.

[0074] As an optional example, the detection chip includes: an analog front-end chip.

[0075] In this embodiment, the aforementioned Analog Front End (AFE) chip can be used to detect the first cell voltage on multiple cells and the first shunt voltage on the shunt device when the target switch is in the closed state.

[0076] In this embodiment of the present invention, the battery detection circuit includes: a detection chip, a battery, and a voltage adjustment device. The detection chip is connected to multiple battery cells in the battery and the voltage adjustment device, respectively, and is used to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device is connected to the battery and is used to adjust the first cell voltage and the first shunt voltage in the battery. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage. In this embodiment of the invention, when determining the operating state of the battery, the detection chip in the battery detection circuit can detect the first cell voltage on multiple cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device adjusts the first cell voltage and the first shunt voltage. The detection chip can also determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage, that is, determine whether the battery is in a normal operating state or an abnormal operating state. This achieves the purpose of determining the battery's state information, thereby solving the technical problem of low accuracy in determining the battery state and thus achieving the technical effect of improving the accuracy of determining the battery state.

[0077] For example, the battery detection circuit in this invention can be used to determine the battery status for preset application scenarios. These preset application scenarios can include the following scenarios in the vehicle field: autonomous driving for commuting, AI-powered driver assistance for passenger cars, automatic parking assistance (APA) scenarios (such as memory parking for private spaces in garages, intelligent parking for designated spaces in parking lots, etc.), and navigation-guided pilot (NGP) scenarios in urban or highway areas. Furthermore, these preset application scenarios can also include, but are not limited to: intelligent transportation scenarios for intelligent driving trucks or unmanned trucks in the logistics and transportation field, and intelligent farming scenarios for autonomous agricultural vehicles in the agricultural machinery field.

[0078] When the above-mentioned preset application scenario is a scenario in a field other than the vehicle field, those skilled in the art should be able to understand that the vehicle in this utility model can be replaced with other objects (e.g., agricultural machinery, drones, and robots), and correspondingly, the various devices and systems included in the vehicle can be replaced with devices and systems related to other objects.

[0079] The technical solution of this utility model embodiment will be illustrated below with reference to preferred embodiments.

[0080] Currently, with the development of vehicles, battery status estimation has become increasingly important. However, in existing technologies, battery status is often judged solely based on the battery's usage time after charging. This limits the accuracy of battery status estimation devices, leading to the technical problem of low accuracy in determining battery status.

[0081] However, this utility model embodiment proposes a battery detection circuit. When the battery's operating state is determined, the detection chip in the battery detection circuit can detect the first cell voltage on multiple cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device adjusts the first cell voltage and the first shunt voltage. The detection chip can also determine the battery's operating state corresponding to the adjusted first cell voltage and the adjusted first shunt voltage, that is, determine whether the battery's operating state is a normal operating state or an abnormal operating state. This achieves the purpose of determining the battery's state information, thereby solving the technical problem of low accuracy in determining the battery state, and thus achieving the technical effect of improving the accuracy of determining the battery state.

[0082] For example, the EIS characteristics of a battery can be obtained through a detection circuit used for EIS estimation. The battery's state information can then be determined based on the correspondence between the battery's EIS characteristics and its internal state. Figure 2 This is a schematic diagram of a detection circuit for cell EIS estimation according to an embodiment of the present invention, as shown below. Figure 2 As shown, the detection circuit includes: a power supply, an external switch SW1, a shunt, simulated cells R1 to R18, circuit resistors R19 and R20, and an AFE chip (not shown in the figure). The AFE chip is a protection chip used to acquire the voltage of each simulated cell, and a single AFE chip can acquire the voltage of 18 cells. The AFE chip integrates EIS acquisition functionality. In the test setup, by switching the current at different frequencies through the external switch SW1, varying voltages can be synchronously generated on the 18 simulated cells and the shunt. The AFE chip then acquires the voltage changes generated on the 18 simulated cells and the shunt, respectively, to obtain the first voltage change between the adjusted first shunt voltage and the original first shunt voltage, and the second voltage change between the adjusted first cell voltage and the original first cell voltage. By performing Fourier transforms on the second voltage change and the current change, the transformed second voltage change and the transformed current change can be obtained. The EIS of the battery can be calculated using the following formula: Z = ▲V / ▲I.

[0083] In this embodiment, the battery detection circuit includes: a detection chip, a battery, and a voltage adjustment device. The detection chip is connected to multiple battery cells in the battery and the voltage adjustment device, respectively, for detecting the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device is connected to the battery and is used to adjust the first cell voltage and the first shunt voltage in the battery. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage.

[0084] In this embodiment of the invention, when determining the operating state of the battery, the detection chip in the battery detection circuit can detect the first cell voltage on multiple cells and the first shunt voltage on the voltage adjustment device. The voltage adjustment device adjusts the first cell voltage and the first shunt voltage. The detection chip can also determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage, that is, determine whether the battery is in a normal operating state or an abnormal operating state. This achieves the purpose of determining the battery's state information, thereby solving the technical problem of low accuracy in determining the battery state and thus achieving the technical effect of improving the accuracy of determining the battery state.

[0085] According to another aspect of the present invention, a vehicle is also provided, including any of the above-described battery detection circuits.

[0086] Figure 3 This is a structural block diagram of a vehicle according to an embodiment of the present utility model, such as... Figure 3 As shown, the components of the vehicle 300 include, but are not limited to, a memory 310 and a processor 320. The processor 320 is connected to the memory 310 via a bus 330, and the database 350 is used to store data.

[0087] Vehicle 300 may also include access device 340, which enables vehicle 300 to communicate via one or more networks 360. Examples of these networks include Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or combinations of communication networks such as the Internet. Access device 340 may include one or more of any type of wired or wireless network interface (e.g., network interface controller (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, a Worldwide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, a Near Field Communication (NFC) interface, and so on.

[0088] In one embodiment of this disclosure, the aforementioned components of vehicle 300 and Figure 3 Other components, not shown, can also be connected to each other, for example, via a bus. It should be understood that... Figure 3 The vehicle structure diagram shown is for illustrative purposes only and is not intended to limit the scope of this disclosure. Those skilled in the art can add or replace other components as needed.

[0089] It should be noted that the sequence numbers of the above-mentioned embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0090] In the above embodiments of this utility model, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0091] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A battery detection circuit, characterized in that, The battery detection circuit includes: a detection chip, a battery, and a voltage adjustment device, wherein... The detection chip is connected to multiple battery cells in the battery and the voltage adjustment device, respectively, and is used to detect the first cell voltage on the multiple battery cells and the first shunt voltage on the voltage adjustment device; The voltage adjustment device is connected to the battery and is used to adjust the voltage of the first cell in the battery and the first shunt voltage. The detection chip is also used to determine the operating state of the battery corresponding to the adjusted first cell voltage and the adjusted first shunt voltage.

2. The battery detection circuit according to claim 1, characterized in that, The voltage regulation device includes a target switch and a shunt device, wherein... The target switch is used to switch the current frequency of the cell detection circuit. The shunt device is connected to the target switch and is used to adjust the voltage of the first cell and the first shunt voltage triggered by the switched current frequency.

3. The battery detection circuit according to claim 2, characterized in that, The detection chip includes a first detection chip and a second detection chip, wherein... The first detection chip is used to determine the first voltage change between the adjusted first shunt voltage and the first shunt voltage before adjustment; The second detection chip is connected to the first detection chip and is used to convert the first voltage change and the resistance of the shunt device into the current change of the shunt device.

4. The battery detection circuit according to claim 3, characterized in that, The first detection chip is also used to determine a second voltage change between the adjusted first cell voltage and the first cell voltage before adjustment; The second detection chip is also used to determine the operating state corresponding to the second voltage change and the current change.

5. The battery detection circuit according to claim 4, characterized in that, The second detection chip is further configured to transform the second voltage change and the current change, and to determine the operating state corresponding to the transformed second voltage change and the transformed current change.

6. The battery detection circuit according to claim 5, characterized in that, The second detection chip is also used to convert the transformed second voltage change and the transformed current change into the operating state.

7. The battery detection circuit according to claim 2, characterized in that, The diversion device includes: a diverter.

8. The battery detection circuit according to claim 1, characterized in that, The battery includes: a storage battery.

9. The battery detection circuit according to any one of claims 1 to 8, characterized in that, The detection chip includes: an analog front-end chip.

10. A vehicle, characterized in that, The vehicle includes the battery detection circuit according to any one of claims 1 to 9.

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