A battery sensor

Abstract

This utility model discloses a battery sensor, comprising: a conductive housing with a sealed cavity inside; a first temperature sensor and a first humidity sensor, the detection ends of which are located outside the sealed cavity, and the first temperature sensor and the first humidity sensor are used to detect the ambient temperature and ambient humidity values ​​of the battery sensor, respectively; a shunt, disposed on the conductive housing, for acquiring the current value of the battery; and a control unit, disposed within the sealed cavity, electrically connected to the first temperature sensor, the first humidity sensor, and the shunt, for receiving the current value, ambient temperature value, and ambient humidity value, and correcting the battery current value based on the ambient temperature and ambient humidity values. This utility model, through integrated arrangement, reduces the space occupied and the number of wires, improving the space utilization rate of the engine compartment.

Description

Technical Field

[0001] This utility model relates to the field of battery management system technology, and in particular to a battery sensor. Background Technology

[0002] Most existing automobiles are equipped with battery sensors to monitor the battery's own status in real time (such as the current flowing through the battery and the battery voltage). The battery sensors are used to upload the aforementioned battery status data to a host computer. The host computer receives the battery status data and performs logical operations to monitor the battery's status, thereby ensuring battery safety and driving safety of the vehicle.

[0003] Research has shown that the ambient temperature and humidity of a battery's environment affect its lifespan. Therefore, existing battery management systems incorporate temperature and humidity sensors in addition to the battery sensor that detects current. These three sensors are independently configured and wired separately to the host computer. The temperature and humidity sensors are connected to the host computer via wires, respectively detecting the temperature and humidity values ​​of the battery's environment and transmitting these values ​​to the host computer. The battery sensor detects the current flowing through the battery and transmits this value to the host computer. The host computer receives temperature, humidity, and current data at different times and performs logical operations to adjust the battery current value in real time.

[0004] In other words, in the existing technology, the temperature sensor, humidity sensor and battery sensor are set up independently and are wired separately to the host computer. This independent setting and separate wiring takes up a lot of space and will cause a waste of engine compartment space. Utility Model Content

[0005] The purpose of this invention is to solve the problem of existing battery sensors, which require separate installation and wiring, resulting in large space occupation and wasted engine compartment space. This invention provides a battery sensor that, through integrated arrangement, can correct the detected battery current value based on the detected ambient temperature and humidity values, while reducing the space occupied and the number of wires, thus improving the space utilization rate of the engine compartment.

[0006] To address the aforementioned technical problems, this utility model discloses a battery sensor, comprising:

[0007] A conductive housing with a sealed cavity inside;

[0008] The first temperature sensor and the first humidity sensor have their detection ends located outside the sealed cavity. The first temperature sensor and the first humidity sensor are used to detect the ambient temperature value and the ambient humidity value of the battery sensor, respectively.

[0009] A shunt, located on the conductive housing, is used to obtain the current value of the battery.

[0010] The control unit is located inside the sealed cavity. The control unit is electrically connected to the first temperature sensor, the first humidity sensor and the shunt. The control unit is used to receive the current value, the ambient temperature value and the ambient humidity value, and to correct the current value of the battery based on the ambient temperature value and the ambient humidity value.

[0011] By adopting the above technical solution, both the first temperature sensor and the first humidity sensor are installed inside the battery sensor. The detected current value of the battery can be corrected based on the detected ambient temperature and humidity values. This integrated arrangement can reduce the space occupied and the number of wires, thereby improving the space utilization of the engine compartment.

[0012] Optionally, it also includes:

[0013] The second temperature sensor is located inside the sealed cavity and is used to detect the temperature value inside the sealed cavity.

[0014] The second humidity sensor is located inside the sealed cavity and is used to detect the humidity value inside the sealed cavity.

[0015] The control unit is electrically connected to the second temperature sensor and the second humidity sensor respectively. The control unit is also used to receive the temperature value and the humidity value inside the sealed cavity, and to correct the current value of the battery based on the temperature value and the humidity value inside the sealed cavity.

[0016] By adopting the above technical solution, the sensor disclosed in this application, when monitoring the state of a storage battery, not only considers the influence of ambient temperature and humidity on the current, but also the influence of the temperature and humidity of the battery sensor itself on the battery current. In other words, this application, when calibrating the battery current, comprehensively considers the influence of both the internal temperature and humidity factors of the sensor and the ambient temperature and humidity factors. Through the fusion analysis of internal and ambient temperature and humidity, the battery current is corrected, further improving the accuracy of battery state assessment.

[0017] Optionally, the conductive housing is further provided with an airflow channel that runs through the conductive housing, and the first temperature sensor and the first humidity sensor are both located in the airflow channel.

[0018] Optionally, the airflow channel and the sealing cavity are arranged adjacent to each other, and the first temperature sensor and the first humidity sensor are located on the side wall of the airflow channel near the sealing cavity.

[0019] Optionally, a notch is provided on the side wall of the airflow channel, and both the first temperature sensor and the first humidity sensor are located in the notch, with the detection surfaces of the first temperature sensor and the first humidity sensor facing the airflow channel.

[0020] Optionally, a PCB board is also provided in the sealed cavity, and the control unit, the second temperature sensor, and the second humidity sensor are all located on the PCB board.

[0021] Optionally, the conductive housing is further provided with a first terminal, which is connected to the positive terminal of the battery, and the load is located between the first terminal and the shunt, which is connected to the negative terminal of the battery.

[0022] Optionally, the first terminal is also connected to the control unit, and the first terminal is used to obtain the voltage value of the battery and transmit the voltage value of the battery to the control unit.

[0023] Optionally, the control unit is electrically connected to the host computer of the battery sensor via a communication unit. The communication unit is used to transmit the battery voltage value and the battery current value calibrated by the control unit to the host computer of the battery sensor.

[0024] Optionally, it also includes a second terminal block electrically connected to the shunt, through which the load is connected to the shunt. Attached Figure Description

[0025] Figure 1 This diagram shows the external structure of the battery sensor in an embodiment of the present invention.

[0026] Figure 2 This diagram illustrates the internal structure of the battery sensor in an embodiment of the present invention. Figure 1 ;

[0027] Figure 3 This diagram illustrates the internal structure of the battery sensor in an embodiment of the present invention. Figure 2 ;

[0028] Figure 4 Show Figure 1 Side view;

[0029] Figure 5 This diagram shows the working logic block diagram of the battery sensor in an embodiment of the present invention.

[0030] Figure 6 This invention illustrates the working method flow of the battery sensor in an embodiment of the present invention. Figure 1 ;

[0031] Figure 7 This invention illustrates the working method flow of the battery sensor in an embodiment of the present invention. Figure 2 ;

[0032] Figure 8 This invention illustrates the working method flow of the battery sensor in an embodiment of the present invention. Figure 3 .

[0033] Reference numerals: 100. Battery sensor, 110. Conductive housing, 111. Sealed cavity, 112. PCB board, 113. First terminal, 114. Second terminal, 115. Third terminal, 120. First temperature sensor, 130. First humidity sensor, 140. Shunt, 150. Control unit, 160. Second temperature sensor, 170. Second humidity sensor, 180. Airflow channel, 181. Notch. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0037] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0038] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0040] Most existing automobiles are equipped with battery sensors to monitor the battery's own status in real time (such as the current flowing through the battery and the battery voltage). The battery sensors are used to upload the aforementioned battery status data to a host computer. The host computer receives the battery status data and performs logical operations to monitor the battery's status, ensuring battery safety and driving safety of the vehicle.

[0041] Research has shown that the ambient temperature and humidity of a battery's environment affect its lifespan. Therefore, existing battery management systems incorporate temperature and humidity sensors in addition to the battery sensor that detects current. These three sensors are independently configured and wired separately to the host computer. The temperature and humidity sensors are connected to the host computer via wires, respectively detecting the temperature and humidity values ​​of the battery's environment and transmitting these values ​​to the host computer. The battery sensor detects the current flowing through the battery and transmits this value to the host computer. The host computer receives temperature, humidity, and current data at different times and performs logical operations to adjust the battery current value in real time.

[0042] In other words, in the existing technology, the temperature sensor, humidity sensor and battery sensor are set up independently and are wired separately to the host computer. This independent setting and separate wiring takes up a lot of space and will cause a waste of engine compartment space.

[0043] To solve the above-mentioned technical problems, this utility model discloses a battery sensor 100, such as... Figures 1 to 3 As shown, where, Figure 1 This diagram shows the external structure of the battery sensor in an embodiment of the present invention. Figure 2 This diagram illustrates the internal structure of the battery sensor in an embodiment of the present invention. Figure 1 , Figure 3 This diagram illustrates the internal structure of the battery sensor in an embodiment of the present invention. Figure 2 The battery sensor 100 includes: a conductive housing 110, a first temperature sensor 120, a first humidity sensor 130, a shunt 140, and a control unit 150.

[0044] Among them, reference Figure 1 The conductive housing 110 contains a sealed cavity 111, which serves as a physical seal and electromagnetic shield. Electronic components located inside the sealed cavity 111 are unaffected by external temperature, humidity, and electromagnetic interference, thus ensuring normal operation. The shunt 140 comprises two parts, both located on the conductive housing 110, used to acquire the battery's current value. Specifically, when current flows through the shunt 140, since its resistance is known (e.g., tens of milliohms), the shunt 140 can measure the voltage across its terminals. This allows for direct calculation of the current flowing through the battery using Ohm's law, thus enabling the detection of the battery's condition.

[0045] refer to Figure 2 The detection ends of the first temperature sensor 120 and the first humidity sensor 130 are located outside the sealed cavity 111. The first temperature sensor 120 and the first humidity sensor 130 are used to detect the ambient temperature and ambient humidity values ​​of the battery sensor 100, respectively. In other words, the first temperature sensor 120 and the first humidity sensor 130 are used to monitor the external environment in which the battery sensor 100 is located.

[0046] refer to Figure 3 The control unit 150 is located within the sealed cavity 111. The control unit 150 is electrically connected to the first temperature sensor 120, the first humidity sensor 130, and the shunt 140. The control unit 150 receives the current value of the battery, the ambient temperature value, and the ambient humidity value, and corrects the battery current value based on these values. In other words, when there is a significant difference between the temperature and humidity values ​​of the environment where the battery sensor 100 is located and the set temperature and humidity values ​​(within the set temperature and humidity range, the error of the battery sensor 100's detection value is within the allowable error range), and the measurement error of the battery sensor 100 exceeds the allowable error, the control unit 150 can correct the battery current value, thereby improving the accuracy of battery condition assessment.

[0047] The battery sensor 100 disclosed in this application has both a first temperature sensor 120 and a first humidity sensor 130 disposed inside the battery sensor 100. It can correct the detected current value of the battery based on the detected ambient temperature and humidity values. Structurally, this integrated arrangement can reduce the space occupied and the number of wires, thereby improving the space utilization of the engine compartment.

[0048] On the other hand, in existing technologies, the temperature sensor, humidity sensor, and battery sensor are independently configured and separately wired to the host computer. The host computer receives temperature, humidity, and current data at different times and performs logical operations to correct the battery current value in real time. This consumes a significant amount of computing power from the host computer, reducing its capacity for core driving safety-related calculations. In contrast, the battery sensor 100 in this application can directly correct the detected battery current value based on the detected ambient temperature and humidity values ​​and transmit the correction result to the host computer. This eliminates the need for the host computer to receive the raw current, temperature, and humidity data, or perform current correction calculations; it only receives the corrected current value. Therefore, it does not consume the host computer's computing power, allowing the saved computing power to be used for core driving safety-related calculations such as tire pressure, wheel speed, and chassis settings, thereby improving driving safety.

[0049] Optionally, such as Figure 3 As shown, the system also includes a second temperature sensor 160 and a second humidity sensor 170. The second temperature sensor 160 is disposed within the sealed cavity 111 and is used to detect the temperature value within the sealed cavity 111. The second humidity sensor 170 is disposed within the sealed cavity 111 and is used to detect the humidity value within the sealed cavity 111. The control unit 150 is electrically connected to the second temperature sensor 160 and the second humidity sensor 170, respectively. The control unit 150 is also used to receive the temperature value and humidity value within the sealed cavity 111 and to correct the battery current value based on these values. In this embodiment, the temperature value and humidity value within the sealed cavity 111 are equivalent to the temperature value and humidity value of the battery sensor 100 body. The accuracy of the detection value of the battery sensor 100 body is determined by detecting the temperature value and humidity value of the battery sensor 100 body. When the temperature and humidity values ​​of the battery body exceed the allowable range, it is considered that the detection value of the battery sensor 100 body exceeds the allowable measurement error range, that is, the detection value is inaccurate and needs to be corrected.

[0050] It should be noted that this application does not limit the specific calibration steps. The battery current value can be calibrated first based on the detected ambient temperature and humidity values, and then calibrated again based on the detected temperature and humidity values ​​inside the sealed cavity 111. Alternatively, the battery current value can be calibrated first based on the detected temperature and humidity values ​​inside the sealed cavity 111, and then calibrated again based on the detected ambient temperature and humidity values.

[0051] By adopting the above technical solution, the sensor disclosed in this application, when monitoring the state of the battery, not only takes into account the influence of ambient temperature and humidity on the current, but also the influence of the temperature and humidity of the battery sensor 100 itself on the battery current. In other words, when calibrating the battery current, this application comprehensively considers the influence of both the internal temperature and humidity factors of the sensor and the ambient temperature and humidity factors. Through the fusion analysis of internal and ambient temperature and humidity, the battery current is corrected, further improving the accuracy of battery state assessment.

[0052] Optionally, such as Figure 2 and Figure 3 As shown, the conductive housing 110 also includes an airflow channel 180. The airflow channel 180 is located outside the sealed cavity 111 and extends through the conductive housing 110, allowing unobstructed flow of gas in the battery's environment (i.e., gas in the engine compartment) within the airflow channel 180. For example, gas in the battery's environment can flow along... Figure 2 Entering the airflow channel 180° in the X direction, or along with... Figure 2 The gas enters the airflow channel 180 in the opposite direction to the X direction. In this embodiment, the temperature and humidity values ​​of the gas in the airflow channel 180 are equivalent to the temperature and humidity values ​​of the environment in which the battery sensor 100 is located. The first temperature sensor 120 and the first humidity sensor 130 are both located in the airflow channel 180 and are used to detect the temperature and humidity values ​​of the gas in the airflow channel 180 (that is, the environment in which the battery sensor 100 is located).

[0053] Furthermore, such as Figure 2As shown, the airflow channel 180 and the sealing cavity 111 are arranged adjacent to each other. The first temperature sensor 120 and the first humidity sensor 130 are disposed on the side wall of the airflow channel 180 near the sealing cavity 111. Specifically, a notch 181 is provided on the side wall of the airflow channel 180, and the first temperature sensor 120 and the first humidity sensor 130 are both disposed within the notch 181. Specifically, the detection surfaces of the first temperature sensor 120 and the first humidity sensor 130 both face the airflow channel 180. The first temperature sensor 120 and the first humidity sensor 130 are both electrically connected to the control unit 150 via pins, so as to detect the temperature and humidity values ​​of the gas flowing in the airflow channel 180 (that is, the environment in which the battery sensor 100 is located) and transmit the detected values ​​to the control unit 150.

[0054] Optionally, such as Figure 3 As shown, a PCB board 112 is also provided in the sealed cavity 111, and the control unit 150, the second temperature sensor 160, and the second humidity sensor 170 are all disposed on the PCB board 112. Preferably, the second temperature sensor 160 and the second humidity sensor 170 are integrally formed with the PCB board 112.

[0055] Figure 4 Show Figure 1 A side view. (e.g.) Figure 4 As shown, the conductive housing 110 is also provided with a first terminal 113, which is connected to the positive terminal of the battery. The load (e.g., electrical equipment such as the vehicle's engine, air conditioner, audio system, and headlights, not shown in the figure) is located between the first terminal 113 and the shunt 140, which is connected to the negative terminal of the battery. Further, as... Figure 1 As shown, the battery sensor 100 also includes a second terminal 114, which is electrically connected to the shunt 140. The load is connected to the shunt 140 through the second terminal 114. Current flows out from the positive terminal of the battery, passes through the load and the shunt 140, and returns to the negative terminal of the battery, forming a current loop.

[0056] Furthermore, the first terminal 113 is also connected to the control unit 150. The first terminal 113 is used to acquire the voltage value of the battery and transmit the voltage value of the battery to the control unit 150, thereby detecting the status of the battery through the voltage value of the battery.

[0057] Optionally, the control unit 150 is electrically connected to the host computer (not shown) of the battery sensor 100 via a communication unit (not shown in the figure). The communication unit is used to transmit the battery voltage value and the battery current value calibrated by the control unit 150 to the host computer of the battery sensor 100. After receiving the battery voltage value and the calibrated battery current value, the host computer makes corresponding adjustments to improve the battery's condition, thereby improving the battery's safety and service life. For example, Figure 4 As shown, the battery sensor 100 is also provided with a third terminal 115, which is electrically connected to the control unit 150. The communication unit is located between the third terminal 115 and the host computer. Furthermore, in this embodiment, the communication unit can use LIN communication.

[0058] Figure 5 This diagram illustrates the operational logic block diagram of the battery sensor 100 in an embodiment of the present invention. Figure 5 As shown, current flows from the positive terminal of the battery, passes through the load, and then flows to the shunt 140. The shunt 140 acquires the battery current value and transmits it to the control unit 150. The first temperature sensor 120 and the first humidity sensor 130 transmit the acquired ambient temperature and humidity values ​​to the control unit 150. The second temperature sensor 160 and the second humidity sensor 170 transmit the detected temperature and humidity values ​​of their respective sensor bodies to the control unit 150. The control unit 150 corrects the current value based on the temperature and humidity values ​​of the sensor bodies, as well as the ambient temperature and humidity values. The corrected battery current value is then transmitted to the host computer via LIN communication, allowing the host computer to monitor the actual operating status of the battery and adjust its actions based on the accurate battery current value. Simultaneously, the first terminal 113 transmits the battery voltage value to the control unit 150, which in turn transmits the battery voltage value to the host computer via LIN communication, enabling the host computer to monitor the battery status.

[0059] Figure 6 This invention illustrates the working method of the battery sensor 100 in an embodiment of the present invention. Figure 1 . refer to Figure 6 The battery sensor 100 functions as follows:

[0060] STEP 1: Battery sensor 100 power-on begins;

[0061] STEP2: The first terminal 113 transmits the battery voltage V to the control unit 150;

[0062] STEP3: Detect the current of the battery: Read the voltage difference ΔV1 across the shunt 140 and calculate the current value I1 of the shunt 140 through internal logic;

[0063] STEP4: Detect the temperature and humidity of the sensor body and perform the first calibration of the battery current value: The second temperature sensor 160 and the second humidity sensor 170 acquire the temperature value T10 and humidity value H10 of the sensor body at time t1, and identify the temperature and humidity compensation coefficient Δ1 (Δ1 refers to the coefficient value that needs to be multiplied when the temperature and humidity value of the battery sensor 100 body deviates from the factory setting value). I1*Δ1 gives the current value after the first calibration, which is recorded as I2.

[0064] STEP 5: Detect the temperature and humidity of the external environment and perform a second calibration on the battery current value: The first temperature sensor 120 and the first humidity sensor 130 acquire the temperature value T20 and humidity value H20 of the sensor body at time t1, and identify the temperature and humidity compensation coefficient Δ2 (Δ2 refers to the coefficient that needs to be multiplied when there is a deviation between the temperature and humidity value of the external environment of the battery sensor 100 and the temperature and humidity value of the sensor body). I2*Δ2 gives the current value after the second calibration, which is recorded as I3. I3 is the actual current value of the battery. The control unit 150 receives the actual current value I3 of the battery.

[0065] STEP6: The control unit 150 transmits the real-time battery voltage value V and current value I, the real-time sensor internal temperature value TA and humidity value HA, and the real-time sensor external temperature value TB and humidity value HB to the host computer through communication logic.

[0066] STEP7: Battery sensor 100 power off.

[0067] Furthermore, in this embodiment, the battery sensor 100 also has a leakage warning function, as detailed in the reference below. Figure 6 and Figure 7 The leak warning function is implemented as follows:

[0068] STEP 1: Detect the temperature and humidity of the sensor body at different times: The second temperature sensor 160 and the second humidity sensor 170 acquire the temperature value T10 and humidity value H10 of the sensor body at time t1, and the temperature value T11 and humidity value H11 of the sensor body at time t2.

[0069] STEP2: Calculate the temperature and humidity changes of the sensor body at times t1 and t2: D3 = T11 - T10, D4 = H11 - H10;

[0070] STEP3: Compare the sensor body temperature change value D3 and humidity change value D4 with the upper and lower limits of the sensor body temperature and humidity change values ​​(this value needs to be defined through experimental data at the beginning of the project, the upper limit of temperature change value TC, the lower limit of temperature change value TD; the upper limit of humidity change value HC, the lower limit of humidity change value HD).

[0071] STEP 4: When TD≤D3≤TC and HD≤D4≤HC are satisfied (indicating that the temperature and humidity changes of the sensor body at different times are within the allowable range, it can be inferred that the sealed cavity 111 is not cracked or leaking, and that gas from the external environment has not entered the sealed cavity 111), the battery sensor 100 will not provide a warning. Conversely, if the temperature and humidity changes of the sensor body exceed the preset values ​​(indicating that the temperature and humidity changes of the sensor body at different times exceed the allowable range, it can be inferred that the sealed cavity 111 is leaking, and that external gas has entered the sealed cavity 111, causing the temperature and humidity changes of the sensor body to exceed the preset values), the battery sensor 100 will provide a warning.

[0072] STEP5: Implement gas leak warning and provide real-time alerts to the host computer via communication logic.

[0073] STEP 6: Gas Leak Alarm.

[0074] STEP7: Battery sensor 100 power off.

[0075] Furthermore, the applicant has also discovered through research that the battery sensor 100 in this embodiment of the application also has a condensation warning function, as detailed in the reference below. Figure 6 and Figure 8 The condensation warning function is implemented as follows:

[0076] STEP 1: The second humidity sensor 170 acquires the humidity value H20 of the external environment at time t1 by the battery sensor 100;

[0077] STEP2: Compare the humidity value H20 of the external environment at time t1 of the battery sensor 100 with the upper and lower limits of the external environment humidity value (this value needs to be obtained through experiments in the early stage of the project, with the upper limit of humidity HE and the lower limit of humidity HF).

[0078] STEP3: When HF≤H2O≤HE is met, the product will not provide a warning. Conversely, if the humidity of the external environment exceeds the preset value, indicating a risk of condensation, the battery sensor 100 will provide a warning.

[0079] STEP4: Implement condensation early warning prompts and send real-time warnings to the host computer via communication logic;

[0080] STEP5: Condensation alarm;

[0081] STEP6: Battery sensor 100 power off.

[0082] In summary, this utility model provides a battery sensor 100. On the one hand, by integrating the sensor, it reduces the space occupied and the number of wires, improving the space utilization of the engine compartment. On the other hand, the battery sensor 100 in this application does not consume the computing power of the host computer, allowing the saved computing power to be used for core driving safety-related calculations such as tire pressure, wheel speed, and chassis, thereby improving driving safety. In addition, the battery sensor 100 in this application can also provide leak warnings and condensation warnings, thus providing early warnings for abnormal conditions such as cracks in the conductive housing 110 of the battery sensor 100 and condensation in the external environment, enabling more comprehensive monitoring of the battery's condition and improving its service life.

[0083] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A battery sensor, characterized in that, include: A conductive housing, wherein a sealed cavity is provided inside the conductive housing; A first temperature sensor and a first humidity sensor, the detection ends of the first temperature sensor and the first humidity sensor are located outside the sealed cavity, and the first temperature sensor and the first humidity sensor are respectively used to detect the ambient temperature value and the ambient humidity value of the battery sensor. A shunt, located on the conductive housing, is used to obtain the current value of the battery. A control unit is disposed within the sealed cavity. The control unit is electrically connected to the first temperature sensor, the first humidity sensor, and the shunt, respectively. The control unit is used to receive the current value of the battery, the ambient temperature value, and the ambient humidity value, and to correct the current value of the battery based on the ambient temperature value and the ambient humidity value.

2. The battery sensor as described in claim 1, characterized in that, Also includes: A second temperature sensor is disposed inside the sealed cavity, and the second temperature sensor is used to detect the temperature value inside the sealed cavity; A second humidity sensor is disposed inside the sealed cavity, and the second humidity sensor is used to detect the humidity value inside the sealed cavity; The control unit is electrically connected to the second temperature sensor and the second humidity sensor respectively. The control unit is also used to receive the temperature value and the humidity value inside the sealed cavity, and to correct the current value of the battery based on the temperature value and the humidity value inside the sealed cavity.

3. The battery sensor as described in claim 2, characterized in that, The conductive housing is also provided with an airflow channel that runs through the conductive housing. The first temperature sensor and the first humidity sensor are both located in the airflow channel.

4. The battery sensor as described in claim 3, characterized in that, The airflow channel and the sealing cavity are arranged adjacent to each other, and the first temperature sensor and the first humidity sensor are disposed on the side wall of the airflow channel near the sealing cavity.

5. The battery sensor as described in claim 4, characterized in that, The airflow channel has a notch on its side wall, and the first temperature sensor and the first humidity sensor are both located in the notch, with the detection surfaces of the first temperature sensor and the first humidity sensor facing the airflow channel.

6. The battery sensor as described in any one of claims 2 to 5, characterized in that, The sealed cavity is also equipped with a PCB board, and the control unit, the second temperature sensor and the second humidity sensor are all located on the PCB board.

7. The battery sensor as described in claim 1, characterized in that, The conductive housing is also provided with a first terminal, which is connected to the positive terminal of the battery. The load is located between the first terminal and the shunt, and the shunt is connected to the negative terminal of the battery.

8. The battery sensor as described in claim 7, characterized in that, The first terminal is also connected to the control unit, and the first terminal is used to acquire the voltage value of the battery and transmit the voltage value of the battery to the control unit.

9. The battery sensor as described in any one of claims 1 to 2, characterized in that, The control unit is electrically connected to the host computer of the battery sensor via a communication unit. The communication unit is used to transmit the voltage value of the battery and the current value of the battery after being corrected by the control unit to the host computer of the battery sensor.

10. The battery sensor as described in claim 7, characterized in that, It also includes a second terminal block, which is electrically connected to the shunt, and the load is connected to the shunt via the second terminal block.

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