Monitoring and control processing integrated package device and monitoring and control processing device for battery management system

Abstract

The present disclosure provides a detection and control integrated device for a battery management system, including: a power switch chip integrated with a charging control switch and / or a discharging control switch, disposed between the positive terminal of the battery and the positive terminal of the load / charger, or disposed between the negative terminal of the battery and the negative terminal of the load / charger, and controlling the charging and / or discharging of the battery through the conduction and disconnection of the charging control switch and / or the discharging control switch; a battery management chip at least for detecting the charging and / or discharging current and / or temperature, and battery voltage of the battery, and providing control signals for the conduction and disconnection of the charging control switch and / or the discharging control switch; a processing chip receiving signals from the battery management chip and providing signals to the battery management chip, and at least capable of calculating the power of the battery; and a base on which the power switch chip, the battery management chip, and the processing chip are stacked in a form. The present disclosure also provides a detection and control device.

Description

Technical Field

[0001] The present disclosure relates to a detection and control processing integrated device and a detection and control processing device for a battery management system. Background Art

[0002] In a battery management system, a charge and discharge switch, a battery management chip, a microprocessor, etc. are usually used. During actual use, users need to set up and connect these devices, and implement corresponding functions by setting them on a printed circuit board.

[0003] However, during use, the charge and discharge switch is thin and easily broken when in use. Moreover, since various devices need to be set on the circuit board, this will correspondingly increase the area of the circuit board. Since different devices need to be calibrated before use after installation, this will bring huge costs.

[0004] In the existing design, the safety design is insufficient. Moreover, the recovery conditions after protection are fixed, and the battery state cannot be read after protection. Summary of the Invention

[0005] To solve one of the above technical problems, the present disclosure provides a detection and control processing integrated device and a detection and control processing device for a battery management system.

[0006] According to one aspect of the present disclosure, a detection and control processing integrated device for a battery management system includes:

[0007] A power switch chip, the power switch chip integrating a charge control switch and / or a discharge control switch, the power switch chip being disposed between the positive terminal of the battery and the positive terminal of the load / charger, or between the negative terminal of the battery and the negative terminal of the load / charger, and controlling the charging and / or discharging of the battery by the conduction and disconnection of the charge control switch and / or the discharge control switch;

[0008] A battery management chip, the battery management chip at least being used to detect the charging and / or discharging current and / or temperature and battery voltage of the battery, and providing control signals for the conduction and disconnection of the charge control switch and / or the discharge control switch;

[0009] A processing chip, the processing chip receiving signals from the battery management chip and providing signals to the battery management chip, the processing chip at least being able to calculate the power of the battery; and

[0010] A base, the power switch chip, the battery management chip, and the processing chip being disposed on the base in a stacked form.

[0011] According to at least one embodiment of the present disclosure, the power switch chip is disposed on the base, and the battery management chip is disposed on the power switch chip in a stacked form, and the processing chip is disposed on the power switch chip in a stacked form.

[0012] According to at least one embodiment of the present disclosure, the battery management chip and the processing chip are disposed on a side surface of the power switch chip away from the base in a side-by-side manner.

[0013] According to at least one embodiment of the present disclosure, the power switch chip is disposed on the base, and the battery management chip is disposed on the base, and the processing chip is disposed on the power switch chip or on the battery management chip.

[0014] According to at least one embodiment of the present disclosure, the power switch chip is disposed on the base, and the processing chip is disposed on the base, and the battery management chip is disposed on the power switch chip or on the processing chip.

[0015] According to at least one embodiment of the present disclosure, the power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip in a stacked form.

[0016] According to at least one embodiment of the present disclosure, the co-packaged device further includes a housing, the base is a part of the housing or disposed on the housing, and the housing further includes pins and the pins are disposed on the base or on the housing, and the co-packaged device is connected to external components through the pins.

[0017] According to at least one embodiment of the present disclosure, the pins of the power switch chip, the battery management chip, and the processing chip are connected to the pins through wire bonding.

[0018] According to at least one embodiment of the present disclosure, the power switch chip, the battery management chip, and the processing chip are injection-molded and encapsulated into the housing.

[0019] According to another aspect of the present disclosure, a monitoring and processing device includes: the co-packaged device as described in any one of the above.

[0020] According to at least one embodiment of the present disclosure, it further includes:

[0021] A current detection resistor, which is connected in a charging and / or discharging circuit for detecting charging and / or discharging current, and the pins of the encapsulated device receive the charging and / or discharging current, wherein the sampling resistor is disposed inside or outside the battery management chip.

[0022] According to at least one embodiment of the present disclosure, it further includes:

[0023] A thermistor, which is disposed near the battery and is used for detecting the temperature of the battery, and the pins of the encapsulated device receive the temperature value detected by the thermistor.

[0024] According to at least one embodiment of the present disclosure, the battery is a lithium battery or a battery pack formed by two or more lithium batteries, and the pins of the encapsulated device receive the detection voltage of the one lithium battery or each lithium battery of the battery pack.

[0025] According to at least one embodiment, the battery management chip includes: a voltage acquisition unit that acquires the voltage of the battery; and a logic processor that is respectively connected to the voltage acquisition unit and the charging control switch and / or the discharging control switch. When the voltage acquired by the voltage acquisition unit is outside the first threshold voltage range, the logic processor outputs a control signal, and the switch and / or the discharging control switch is turned off based on the control signal.

[0026] According to at least one embodiment, the battery management chip further includes a control unit connected between the charging control switch and / or the discharging control switch and the logic processor. When the voltage acquired by the voltage acquisition unit is outside the first threshold voltage range, the logic processor generates a control signal, and the control unit turns off the charging control switch and / or the discharging control switch based on the control signal.

[0027] According to at least one embodiment, the voltage acquisition unit includes a comparator. When the voltage acquired by the voltage acquisition unit is outside the first threshold voltage range, the voltage acquisition unit outputs a comparison signal to the logic processor, and the logic processor generates the control signal based on the comparison signal. Description of the Drawings

[0028] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are included in this specification and form a part of this specification.

[0029] Figure 1Shows a co-packaged device according to an embodiment of the present disclosure.

[0030] Figure 2 Shows a co-packaged device according to an embodiment of the present disclosure.

[0031] Figure 3 Is a schematic circuit diagram of a co-packaged device for battery monitoring and control processing according to an embodiment of the present disclosure.

[0032] Figure 4 Is a schematic circuit diagram of a co-packaged device for battery monitoring and control processing according to another embodiment of the present disclosure.

[0033] Figure 5 Is a schematic circuit diagram of a co-packaged device for battery monitoring and control processing according to another embodiment of the present disclosure. Detailed implementation manners

[0034] The present disclosure will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific implementation manners described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the sake of description, only the parts related to the present disclosure are shown in the drawings.

[0035] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and embodiments.

[0036] Unless otherwise specified, the exemplary embodiments / examples shown will be understood to provide exemplary features of various details of some ways that can implement the technical concept of the present disclosure in practice. Therefore, unless otherwise specified, without departing from the technical concept of the present disclosure, the features of various embodiments / examples can be additionally combined, separated, interchanged, and / or rearranged.

[0037] In the drawings, cross-hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated, the presence or absence of cross-hatching or shading does not convey or imply any preference or requirement for the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. Additionally, in the drawings, for clarity and / or descriptive purposes, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences can be performed in an order different from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. Moreover, the same reference numerals denote the same components.

[0038] When a component is referred to as being “on” or “above” another component, “connected to” or “coupled to” another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there can be intervening components. However, when a component is referred to as being “directly on” another component, “directly connected to” or “directly coupled to” another component, there are no intervening components. For this reason, the term “connected” can refer to a physical connection, an electrical connection, etc., and can have or not have intervening components.

[0039] For descriptive purposes, the present disclosure may use spatial relative terms such as “beneath,” “below,” “under,” “lower,” “above,” “upper,” “on,” “over,” “higher,” and “side (e.g., as in “sidewall”)” etc., to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device in use, operation, and / or manufacture. For example, if the device in the figures is turned over, a component described as “beneath” or “below” another component or feature will then be oriented “above” the other component or feature. Thus, the exemplary term “beneath” can encompass both an orientation of “above” and “below.” In addition, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatial relative descriptors used herein are to be interpreted accordingly.

[0040] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly dictates otherwise, the singular forms “a,” “an,” and “the” are also intended to include the plural forms. Additionally, when the terms “comprises” and / or “comprising” and their variants are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms and not as terms of degree, and thus are used to interpret the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0041] According to an embodiment of the present disclosure, there is provided a monitoring and control integrated structure (integrated chip, integrated device, integrated stacked device, integrated stacked chip) for a battery management system. The integrated structure can include a charge and discharge switch, a battery management chip, and a processing chip, where the processing chip can be in the form of an MCU.

[0042] The power switch chip integrates a charging control switch and a discharging control switch. The power switch chip is disposed between the positive terminal of the battery and the positive terminal of the load / charger, or between the negative terminal of the battery and the negative terminal of the load / charger, and controls the charging and discharging of the battery by the conduction and disconnection of the charging control switch and the discharging control switch.

[0043] The battery management chip is at least used to detect the charging and discharging current and / or temperature, battery voltage of the battery, and provide control signals for the conduction and disconnection of the charging control switch and the discharging control switch.

[0044] The processing chip receives signals from the battery management chip and provides signals to the battery management chip. The processing chip can at least calculate the power of the battery.

[0045] The power switch chip, the battery management chip, and the processing chip are disposed on the base in a stacked form.

[0046] The processing chip can run power calculation algorithms, secondary monitoring processing algorithms, battery authentication encryption algorithms, etc.

[0047] Figure 1 A co-packaged device according to an embodiment of the present disclosure is shown. The co-packaged device may include a power switch chip, a battery management chip, a processing chip, and a base. Among them, the power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip. Pins may be disposed on the base, and the pins may be connected to external components. The relevant pins of the power switch chip, the battery management chip, and the processing chip can be connected by wire bonding. Of course, those skilled in the art should understand that other existing technologies such as vias can also be used for connection. For example, the wire bonding can be made of copper wire, aluminum wire, or alloy wire, etc. The material of the base can be made of aluminum.

[0048] In addition, according to other embodiments of the present disclosure, the power switch chip is disposed on the base, and the battery management chip is disposed on the power switch chip in a stacked form, and the processing chip is disposed on the power switch chip in a stacked form. The battery management chip and the processing chip are disposed on one side surface of the power switch chip away from the base in a side-by-side manner.

[0049] The power switch chip is disposed on the base, and the battery management chip is disposed on the base, and the processing chip is disposed on the power switch chip or on the battery management chip.

[0050] The power switch chip is disposed on the base, and the processing chip is disposed on the base, and the battery management chip is disposed on the power switch chip or on the processing chip.

[0051] The power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip in a stacked form.

[0052] The co-packaged device further includes a housing, the base is a part of the housing, and the housing further includes pins which are disposed on the base, and the co-packaged device is connected to external components through the pins.

[0053] The pins of the power switch chip, the battery management chip, and the processing chip are connected to the pins through wire bonding. The power switch chip, the battery management chip, and the processing chip are injection-molded and encapsulated into the housing. In addition, after the injection molding is completed, heat dissipation devices such as heat sinks can be disposed on the upper surface.

[0054] As Figure 1 shown, the pins of the power management chip, the pins of the co-packaged device, the pins of the processing chip, the pins of the power switch chip, and the PAD (pins) can be connected correspondingly according to actual situations to achieve coordinated use. The specific connection method can be selected according to actual situations, and the connection method can adopt the wire bonding method.

[0055] Figure 2 Shown is a co-packaged device according to an embodiment of the present disclosure. The co-packaged device may include a power switch chip, a battery management chip, a processing chip, and a base. Among them, the power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip. Pins may be disposed on the base, and the pins may be connected to external components. The relevant pins of the power switch chip, the battery management chip, and the processing chip can be connected through wire bonding. Of course, those skilled in the art should understand that other existing technologies such as vias can also be used for connection. As Figure 2 shown, the pins of the power management chip, the pins of the co-packaged device, the pins of the processing chip, the pins of the power switch chip, and the PAD (pins) can be connected correspondingly according to actual situations to achieve coordinated use. The specific connection method can be selected according to actual situations, and the connection method can adopt the wire bonding method.

[0056] Although in the above embodiment, it is shown that the power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip.

[0057] However, in the present disclosure, the power switch chip is disposed on the base, and the processing chip is disposed on the base, and the battery management chip is disposed in a stacked form on the processing chip. The power switch chip is disposed on the base, and the battery management chip is disposed on the base, and the processing chip is disposed in a stacked form on the battery management chip. Or the processing chip, the power switch chip, and the battery management chip are disposed on the base in three stacked forms, etc.

[0058] Therefore, according to the arrangement of the present disclosure, three chips can be arranged on a base, so that users can directly use the co-packaged device when using it, thus avoiding damage, breakage, etc. of each chip during use. Moreover, when manufacturing the co-packaged device, during the manufacturing process, the three chips can be directly debugged successfully and then provided to users. This can also avoid users from performing debugging, etc.

[0059] Some examples will be provided below for the specific implementation manners of each chip of the present disclosure. However, those skilled in the art should understand that these examples do not fully define each chip. Among the accompanying drawings of the following examples, the power switch chip is represented by 0, the battery management chip is represented by 0, and the processing chip is represented by 3000.

[0060] According to an embodiment of the present disclosure, as Figure 3 shown, the battery monitoring and control processing device includes: a battery monitoring and control processor, and the battery monitoring and control processor includes:

[0061] A first switch unit 101, and the first switch unit 101 is connected between the positive electrode of the battery cell 10 of the battery device and the positive electrode of the battery device;

[0062] A first voltage acquisition unit 102, and the first voltage acquisition unit 102 acquires the positive electrode voltage of the battery cell 10;

[0063] A first logic processor 103, the first logic processor 103 is respectively connected to the first voltage acquisition unit 102 and the first switch unit 101. When the positive electrode voltage of the battery cell 10 acquired by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first logic processor 103 outputs a first control signal, and the first switch unit 101 is turned off based on the first control signal.

[0064] The first threshold voltage range can be a positive voltage threshold range or a negative voltage threshold range.

[0065] Wherein, the first logic processor 103 can be a processing circuit with fixed processing logic, and it can be a part of the integrated circuit in the chip.

[0066] In this embodiment, by setting the first switch unit 101, when the positive electrode voltage of the battery cell 10 is too large, by turning off the first switch unit 101, the path between the battery cell 10 and the load or charger of the battery device is turned off. The battery monitoring and control processing device of the present disclosure can be applied to the battery device of a mobile phone, and can also be applied to the battery devices of electric vehicles, electric bicycles, etc.

[0067] The battery monitoring and control processor of this embodiment can be in the form of a semiconductor chip.

[0068] The battery monitoring and control processing device of this embodiment can meet the situation where the battery cell 10 is a single battery and the power is less than 30W.

[0069] For the battery monitoring and control processing device of the above embodiment, preferably, as Figure 3 shown, the battery monitoring and control processor further includes a first control unit 104, and the first control unit 104 is connected between the first switch unit 101 and the first logic processor 103.

[0070] For the battery monitoring and control processing device of each of the above embodiments, preferably, when the positive electrode voltage of the battery cell 10 collected by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first logic processor 103 generates a first control signal, and the first control unit 104 turns off the first switch unit 101 based on the first control signal.

[0071] For the battery monitoring and control processing device of the above embodiment, preferably, the first voltage acquisition unit 102 includes a first comparator. When the positive electrode voltage of the battery cell 10 collected by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first voltage acquisition unit 102 outputs a first comparison signal to the first logic processor 103, and the first logic processor 103 generates a first control signal based on the first comparison signal.

[0072] For the battery monitoring and control processing device of the above embodiment, preferably, the battery monitoring and control processor further includes a second voltage acquisition unit 106. The second voltage acquisition unit 106 acquires the positive electrode voltage of the battery device. When the positive electrode voltage of the battery device collected by the second voltage acquisition unit 106 is outside the second threshold voltage range, the first logic processor 103 outputs a second control signal, and the first switch unit 101 is turned off based on the second control signal.

[0073] The second threshold voltage range can be a positive voltage threshold range or a negative voltage threshold range.

[0074] Among them, the second voltage acquisition unit 106 may include a second comparator. When the positive electrode voltage of the battery device collected by the second voltage acquisition unit 106 is outside the second threshold voltage range, the second voltage acquisition unit 106 outputs a second comparison signal to the first logic processor 103, and the first logic processor 103 generates a second control signal to the first control unit 104 based on the second comparison signal.

[0075] The battery monitoring and control processor determines whether a load or a charging device is connected to the battery device based on the positive electrode voltage of the battery device collected by the second voltage acquisition unit.

[0076] Among them, the battery monitoring and control processor determines whether to turn off the first switch unit 101 or turn on the first switch unit 101 based on whether a load or a charging device is connected to the battery device.

[0077] For example, when a load or a charging device is connected to the battery device, and the positive voltage of the battery device is within the second threshold range, if the first switch unit 101 is currently in the off state, the battery monitoring processor generates a control signal to control the first switch unit 101 to resume the on state.

[0078] Preferably, the second voltage acquisition unit 106 includes a comparator and a current source.

[0079] As Figure 3 shown, the second voltage acquisition unit 106 includes a comparator and a current source. Based on this current source, the battery monitoring processor can obtain the positive voltage value of the battery device, so as to determine whether a load or a charging device is connected to the battery device.

[0080] For the battery monitoring processing device of each of the above embodiments, preferably, the battery monitoring processor obtains the voltage difference between the voltage collected by the first voltage acquisition unit 102 and the voltage collected by the second voltage acquisition unit 106. When the voltage difference is outside the threshold voltage difference range, the battery monitoring processor generates a control signal to turn off the first switch unit 101.

[0081] Among them, the threshold voltage difference range is a positive and negative voltage difference range, such as -0.3V to +1V, and those skilled in the art can set and adjust the threshold voltage difference range.

[0082] For the battery monitoring processing device of the above embodiment, preferably, the battery monitoring processor further includes a first current acquisition unit 107. The first current acquisition unit 107 is used to collect the drive current of the first control unit 104. When the drive current is outside the drive current threshold range, the first logic processor 103 stops outputting a control signal to the first control unit 104.

[0083] Preferably, the battery monitoring processor further includes a first current acquisition unit 107. The first current acquisition unit 107 is used to collect the drive current of the first control unit 104. When the drive current is outside the drive current threshold range, the battery monitoring processor generates record information and / or generates an alarm signal.

[0084] For example, if the first control unit 104 outputs a control signal to the first switch unit 101, but does not output it with a normal drive current within the drive current threshold range, or does not output it with a normal drive voltage, the battery monitoring processor will generate record information, and more preferably, generate an alarm signal.

[0085] For the battery monitoring processing device of the above embodiment, preferably, the first current acquisition unit 107 includes a third comparator.

[0086] Among them, when the driving current is outside the driving current threshold range, the first current acquisition unit 107 outputs a third comparison signal, and the first logic processor 103 stops outputting a control signal to the first control unit 104 based on the third comparison signal.

[0087] The second threshold current range can be a positive current threshold range or a negative current threshold range.

[0088] Among them, the first control unit 104 can be a control signal line or other forms.

[0089] For the battery monitoring and control processing device of the above embodiment, preferably, the battery monitoring and control processor further includes a second current acquisition unit 105. The second current acquisition unit 105 acquires the current in the circuit between the first switch unit 101 and the positive electrode of the battery device. When the current acquired by the second current acquisition unit 105 is outside the second threshold current range, the first logic processor 103 outputs a fourth control signal, and the first switch unit 101 is turned off based on the fourth control signal.

[0090] Among them, the second current acquisition unit 105 can include a fourth comparator. When the current acquired by the second current acquisition unit 105 is outside the second threshold current range, the second current acquisition unit 105 outputs a fourth comparison signal to the first logic processor 103, and the first logic processor 103 generates a fourth control signal to the first control unit 104 based on the fourth comparison signal.

[0091] For the battery monitoring and control processing device of the above embodiment, preferably, the battery monitoring and control processor further includes a first temperature acquisition unit 108. The first temperature acquisition unit 108 acquires the temperature of the first switch unit 101 or the temperature of the area adjacent to the first switch unit 101. When the temperature acquired by the first temperature acquisition unit 108 is greater than or greater than or equal to the threshold temperature, the first logic processor 103 outputs a fifth control signal, and the first switch unit 101 is turned off based on the fifth control signal.

[0092] Since the first temperature acquisition unit 108 transmits the acquired temperature signal to the first logic processor 103, when the temperature acquired by the first temperature acquisition unit 108 is greater than or greater than or equal to the threshold temperature, the first logic processor 103 generates a fifth control signal to the first control unit 104.

[0093] For the battery monitoring and control processing device of the above embodiment, preferably, the first switch unit 101 is a field effect transistor.

[0094] The first switch unit 101 is preferably a MOSFET (FET), and the first control unit 104 described above is connected between the gate of the MOSFET and the first logic processor 103.

[0095] Among them, the first switching unit 101 is a single MOSFET or a combination of multiple MOSFETs.

[0096] Since the battery device may face situations such as reverse connection of the charging device, preferably, the first switching unit 101 of the present disclosure needs to be able to withstand sufficient positive and negative voltage withstand, and the first switching unit 101 preferably has a bidirectional blocking ability.

[0097] For the battery monitoring and control processing device of the above embodiment, preferably, the battery monitoring and control processor further includes a filtering circuit 110, and the first voltage acquisition unit 102 acquires the positive electrode voltage of the battery cell 10 after being filtered by the filtering circuit 110.

[0098] Among them, the filtering circuit can be an RC filtering circuit.

[0099] The battery cell 10 described above may include one or more than two battery units.

[0100] Figure 4 It is a schematic circuit diagram of a battery monitoring and control processing device according to another preferred embodiment of the present disclosure.

[0101] As Figure 4 shown, based on the battery monitoring and control processing device of the above various embodiments, it further includes:

[0102] A second switching device, the second switching device is connected between the battery monitoring and control processor and the positive electrode of the battery device, and the second switching device includes a second switching unit 201;

[0103] A first voltage detection unit 301, the first voltage detection unit 301 detects the voltage between the battery monitoring and control processor and the second switching device; and,

[0104] A second logic processor 300, when the voltage detected by the first voltage detection unit 301 is outside the voltage threshold range, the second logic processor 300 generates a control signal to control the second switching device to turn off.

[0105] Among them, the second logic processor 300 can be a software-based processor, such as a single-chip microcomputer, etc.

[0106] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, it further includes a second control unit 302, and the second control unit 302 is connected between the second switching unit 201 and the second logic processor 300.

[0107] As Figure 4As shown, for the battery monitoring and control processing device of the above embodiment, preferably, when the voltage detected by the first voltage detection unit 301 is outside the voltage threshold range, the second logic processor 300 generates a control signal, and the second control unit 302 turns off the second switch unit 201 based on the control signal.

[0108] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, it further includes a second voltage detection unit 304. The second voltage detection unit 304 detects the positive voltage of the battery device. When the positive voltage of the battery device collected by the second voltage detection unit 304 is greater than the threshold voltage, the second logic processor 300 outputs a control signal to turn off the second switch unit 201.

[0109] Preferably, the second logic processor 300 obtains the voltage difference between the voltage detected by the first voltage detection unit 301 and the voltage detected by the second voltage detection unit 304. When the voltage difference is outside the threshold voltage difference range, the second logic processor 300 generates a control signal to turn off the second switch unit 201.

[0110] Wherein, the threshold voltage difference range is the positive and negative voltage difference range, and those skilled in the art can set and adjust the threshold voltage difference range.

[0111] This embodiment can achieve that when the second switch unit 201 (such as a MOSFET) is turned on, it can avoid the failure caused by the excessive internal resistance (RDSON) or current of the second switch unit 201 resulting in too large a voltage difference across the MOSFET.

[0112] Wherein, the first voltage detection unit 301 and the second voltage detection unit 304 can be detection lines.

[0113] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, it further includes a current detection unit 303. The current detection unit 303 detects the current in the circuit between the second switch unit 201 and the positive electrode of the battery device. When the current detected by the current detection unit 303 is greater than the threshold current, the second logic processor 300 outputs a control signal to turn off the second switch unit 201.

[0114] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, the second switch device further includes a second temperature acquisition unit 208. The second temperature acquisition unit 208 acquires the temperature of the second switch unit 201 or the temperature of the area adjacent to the second switch unit 201. When the temperature acquired by the second temperature acquisition unit 208 is greater than or greater than or equal to the threshold temperature, the second logic processor 300 outputs a control signal to turn off the second switch unit 201.

[0115] AsFigure 4 As shown, for the battery monitoring and control processing device of the above embodiment, preferably, the second switch unit 201 is a field effect transistor.

[0116] Among them, the second switch unit 201 is a single MOSFET or a combination of multiple MOSFETs.

[0117] Since the battery device may face situations such as reverse connection of the charging device, preferably, the second switch unit 201 of the present disclosure also needs to be able to withstand sufficient positive and negative voltage withstand, and the second switch unit 201 preferably has bidirectional blocking ability.

[0118] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, the battery monitoring and control processor further includes a buffer 111. The buffer 111 transmits the positive electrode voltage of the battery cell 10 to the second logic processor 300 at a set proportional voltage value. The second logic processor 300 can generate a control signal based on the voltage value transmitted by the buffer 111 to control the second switch unit 201.

[0119] The set ratio described above can be 1:1, 1:2, etc.

[0120] As Figure 4 shown, for the battery monitoring and control processing device of the above embodiment, preferably, the first logic processor 103 is connected to the second logic processor 300 via a control signal line 109, so that the control signal generated by the second logic processor 300 can be transmitted to the first logic processor 103, and / or, so that the control signal generated by the first logic processor 103 can be transmitted to the second logic processor 300.

[0121] For the battery monitoring and control processing device of the present disclosure, those skilled in the art can set and adjust the above-described threshold voltage, threshold temperature, etc. based on the power of the battery device, the number of battery cells, etc.

[0122] Among them, the second switching device in this embodiment can be a separate chip or a part of a chip.

[0123] According to a further preferred embodiment of the battery monitoring and control processing device of the present disclosure, as Figure 5 shown, it includes:

[0124] At least two second switching devices, at least two switching devices are connected in series between the positive electrode of the battery cell 10 of the battery device and the positive electrode of the battery device. The second switching device includes a second switch unit 201; and,

[0125] A battery monitoring and control processor, the battery monitoring and control processor includes:

[0126] The first voltage acquisition unit 102 acquires the positive electrode voltage of the battery cell 10.

[0127] The first logic processor 103 is respectively connected to the first voltage acquisition unit 102 and the second switching part 201 of the second switching device adjacent to the battery cell 10. When the positive electrode voltage of the battery cell 10 acquired by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first logic processor 103 outputs a first control signal, and the second switching part 201 is turned off based on the first control signal.

[0128] As Figure 5 shown, for the battery detection and control processing device of the above embodiment, preferably, the battery detection and control processor further includes a first control unit 104, and the first control unit 104 is connected between the second switching part 201 of the second switching device adjacent to the battery cell 10 and the first logic processor 103.

[0129] As Figure 5 shown, for the battery detection and control processing device of the above embodiments, preferably, when the positive electrode voltage of the battery cell 10 acquired by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first logic processor 103 generates a first control signal, and the first control unit 104 turns off the second switching part 201 of the second switching device adjacent to the battery cell 10 based on the first control signal.

[0130] As Figure 5 shown, for the battery detection and control processing device of the above embodiments, preferably, the first voltage acquisition unit 102 includes a first comparator. When the positive electrode voltage of the battery cell 10 acquired by the first voltage acquisition unit 102 is outside the first threshold voltage range, the first voltage acquisition unit 102 outputs a first comparison signal to the first logic processor 103, and the first logic processor 103 generates a first control signal based on the first comparison signal.

[0131] As Figure 5 shown, for the battery detection and control processing device of the above embodiments, preferably, the battery detection and control processor further includes a second voltage acquisition unit 106, and the second voltage acquisition unit 106 acquires the positive electrode voltage of the battery device. When the positive electrode voltage of the battery device acquired by the second voltage acquisition unit 106 is outside the second threshold voltage range, the first logic processor 103 outputs a second control signal, and the second switching part 201 of the second switching device adjacent to the battery cell 10 is turned off based on the second control signal.

[0132] As Figure 5As shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the battery monitoring and control processor further includes a first current acquisition unit 107. The first current acquisition unit 107 is used to acquire the drive current of the second switching unit 201 of the second switching device adjacent to the battery cell 10. When the drive current is outside the drive current threshold range, the first logic processor 103 stops outputting a control signal to the second switching unit 201 of the second switching device adjacent to the battery cell 10.

[0133] As Figure 5 shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the first current acquisition unit 107 includes a third comparator.

[0134] As Figure 5 shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the battery monitoring and control processor further includes a second current acquisition unit 105. The second current acquisition unit 105 acquires the current in the circuit between the second switching unit 201 of the second switching device adjacent to the battery cell 10 and the positive electrode of the battery device. When the current acquired by the second current acquisition unit 105 is outside the second threshold current range, the first logic processor 103 outputs a fourth control signal, and the second switching unit 201 of the second switching device adjacent to the battery cell 10 is turned off based on the fourth control signal.

[0135] As Figure 5 shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the second switching device further includes a second temperature acquisition unit 208. The second temperature acquisition unit 208 acquires the temperature of the second switching unit 201 of the second switching device adjacent to the battery cell 10, or acquires the temperature of the area where the second switching unit 201 of the second switching device adjacent to the battery cell 10 is located. When the temperature acquired by the second temperature acquisition unit 208 is greater than or greater than or equal to the threshold temperature, the first logic processor 103 outputs a fifth control signal, and the second switching unit 201 of the second switching device adjacent to the battery cell 10 is turned off based on the fifth control signal.

[0136] As Figure 5 shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, it further includes:

[0137] A first voltage detection unit 301 that detects the voltage between two second switching devices; and,

[0138] A second logic processor 300 that generates a control signal to control the second switching device adjacent to the positive electrode of the battery device to turn off when the voltage detected by the first voltage detection unit 301 is outside the voltage threshold range.

[0139] As Figure 5As shown in the figure, for the battery monitoring and control processing device of each of the above embodiments, preferably, it further includes a second control unit 302, and the second control unit 302 is connected between the second switch unit 201 of the second switch device near the positive electrode of the battery device and the second logic processor 300.

[0140] As Figure 5 shown in the figure, for the battery monitoring and control processing device of each of the above embodiments, preferably, when the voltage detected by the first voltage detection unit 301 is outside the voltage threshold range, the second logic processor 300 generates a control signal, and the second control unit 302 turns off the second switch unit 201 of the second switch device near the positive electrode of the battery device based on the control signal.

[0141] As Figure 5 shown in the figure, for the battery monitoring and control processing device of each of the above embodiments, preferably, it further includes a second voltage detection unit 304, and the second voltage detection unit 304 detects the positive electrode voltage of the battery device. When the positive electrode voltage of the battery device detected by the second voltage detection unit 304 is greater than the threshold voltage, the second logic processor 300 outputs a control signal to turn off the second switch unit 201 of the second switch device near the positive electrode of the battery device.

[0142] As Figure 5 shown in the figure, for the battery monitoring and control processing device of each of the above embodiments, preferably, it further includes a current detection unit 303, and the current detection unit 303 detects the current in the circuit between the second switch device near the positive electrode of the battery device and the positive electrode of the battery device. When the current detected by the current detection unit 303 is greater than the threshold current, the second logic processor 300 outputs a control signal to turn off the second switch unit 201 of the second switch device near the positive electrode of the battery device.

[0143] As Figure 5 shown in the figure, for the battery monitoring and control processing device of each of the above embodiments, preferably, the second switch device further includes a second temperature acquisition unit 208, and the second temperature acquisition unit 208 acquires the temperature of the second switch unit 201 or the temperature of the area near the second switch unit 201. When the temperature acquired by the second temperature acquisition unit 208 of the second switch device near the positive electrode of the battery device is greater than or greater than or equal to the threshold temperature, the second logic processor 300 outputs a control signal to turn off the second switch unit 201 of the second switch device near the positive electrode of the battery device.

[0144] As Figure 5As shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the battery monitoring and control processor further includes a buffer 111. The buffer 111 transmits the positive electrode voltage of the battery cell 10 to the second logic processor 300 at a set proportional voltage value. The second logic processor 300 can generate a control signal based on the voltage value transmitted by the buffer 111 to control the second switching portion 201 of the second switching device near the positive electrode of the adjacent battery device.

[0145] The set ratio described above can be 1:1, 1:2, etc.

[0146] According to a preferred embodiment of the present disclosure, the second logic processor 300 obtains the voltage difference between the voltage transmitted by the buffer 111 and the voltage detected by the first voltage detection unit 301. When the voltage difference is outside the threshold voltage difference range, the second logic processor 300 generates a control signal to turn off the second switching portion 201.

[0147] Among them, the threshold voltage difference range is a positive and negative voltage difference range, and those skilled in the art can set and adjust the threshold voltage difference range.

[0148] According to a preferred embodiment of the present disclosure, the second logic processor 300 obtains the voltage difference between the voltage transmitted by the buffer 111 and the voltage detected by the second voltage detection unit 304. When the voltage difference is outside the threshold voltage difference range, the second logic processor 300 generates a control signal to turn off the second switching portion 201.

[0149] Among them, the threshold voltage difference range is a positive and negative voltage difference range, and those skilled in the art can set and adjust the threshold voltage difference range.

[0150] This embodiment can avoid excessive impedance in the circuits of the first switching portion 101 and the second switching portion 201.

[0151] According to a preferred embodiment of the present disclosure, the second logic processor 300 obtains the loop impedance and the impedances of each switching portion (101, 201) based on the voltage difference between the voltage transmitted by the buffer 111 and the voltage detected by the first voltage detection unit 301, the voltage difference between the voltage transmitted by the buffer 111 and the voltage detected by the second voltage detection unit 304, the voltage difference between the voltage detected by the first voltage detection unit 301 and the voltage detected by the second voltage detection unit 304, the current collected by the second current collection unit 105, and the current collected by the current detection unit 303.

[0152] Such as Figure 5As shown, for the battery monitoring and control processing device of each of the above embodiments, preferably, the first logic processor 103 is connected to the second logic processor 300 via the control signal line 109, such that the control signal generated by the second logic processor 300 can be transmitted to the first logic processor 103, and / or such that the control signal generated by the first logic processor 103 can be transmitted to the second logic processor 300.

[0153] The battery in the present disclosure described above can be multiple batteries, battery cells, etc. of a battery pack.

[0154] In addition, according to another embodiment of the present disclosure, a monitoring and control processing device is further provided. The monitoring and control processing device may include: the co-packaged device as described above. It may include: a current detection resistor, the current detection resistor is connected in the charging and / or discharging circuit for detecting the charging and / or discharging current, and the pins of the co-packaged device receive the charging and / or discharging current, wherein the sampling resistor is provided inside or outside the battery management chip. That is, the current value can be obtained through an external sampling resistor. It may further include: a thermistor, the thermistor is provided near the battery and is used for detecting the temperature of the battery, and the pins of the co-packaged device receive the temperature value detected by the thermistor.

[0155] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0156] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0157] Those skilled in the art should understand that the above embodiments are merely for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A detection and control integrated device for a battery management system, characterized in that, Comprising: A power switch chip integrated with a charging control switch and / or a discharging control switch. The power switch chip is disposed between the positive terminal of the battery and the positive terminal of the load or charger, or between the negative terminal of the battery and the negative terminal of the load or charger, and controls the charging and / or discharging of the battery by turning on and off the charging control switch and / or the discharging control switch; A battery management chip for at least detecting the charging and / or discharging current and / or temperature of the battery, and the battery voltage, and providing control signals for turning on and off the charging control switch and / or the discharging control switch; A processing chip that receives signals from the battery management chip and provides signals to the battery management chip, and the processing chip is at least capable of calculating the battery power; A base on which the power switch chip, the battery management chip, and the processing chip are stacked; A first switch unit connected between the positive electrode of the battery cell of the battery device and the positive electrode of the battery device; A first voltage acquisition unit for acquiring the positive electrode voltage of the battery cell; A first logic processor connected to the first voltage acquisition unit. When the positive electrode voltage of the battery cell acquired by the first voltage acquisition unit is outside the first threshold voltage range, the first logic processor outputs a first control signal; And A first control unit connected between the first switch unit and the first logic processor, and turns off the first switch unit based on the first control signal; A first current acquisition unit for acquiring the driving current of the first switch unit. When the driving current is outside the driving current threshold range, the first logic processor stops outputting control signals to the first control unit. The device further includes: a first voltage detection unit, a second logic processor, a second control unit, a second voltage detection unit, and a second switch unit. The first voltage detection unit detects the voltage between the first switch unit and the second switch unit. When the voltage detected by the first voltage detection unit is outside the voltage threshold range, the second logic processor generates a control signal to turn off the second switch unit. The second voltage detection unit detects the positive electrode voltage of the battery. When the positive electrode voltage of the battery acquired by the second voltage detection unit is greater than the threshold voltage, the second logic processor outputs a control signal to turn off the second switch unit. The second logic processor also obtains the voltage difference between the voltage detected by the first voltage detection unit and the voltage detected by the second voltage detection unit. When the voltage difference is outside the threshold voltage difference range, the second logic processor generates a control signal to turn off the second switch unit.

2. The co-packaged device according to claim 1, wherein, The power switch chip is disposed on the base, and the battery management chip is stacked on the power switch chip, and the processing chip is stacked on the power switch chip.

3. The co-packaged device according to claim 2, wherein The battery management chip and the processing chip are disposed side by side on a surface of the power switch chip away from the base.

4. The co-packaged device according to claim 1, wherein The power switch chip is disposed on the base, and the battery management chip is disposed on the base, and the processing chip is disposed on the power switch chip or on the battery management chip.

5. The co-packaged device according to claim 1, wherein, The power switch chip is disposed on the base, and the processing chip is disposed on the base, and the battery management chip is disposed on the power switch chip or on the processing chip.

6. The co-packaged device according to claim 1, wherein, The power switch chip is disposed on the base, and the battery management chip and the processing chip are disposed on the power switch chip in a stacked form.

7. The co-packaged device according to any one of claims 1 to 6, characterized in that, The co-packaged device further includes a housing, the base is a part of the housing or disposed on the housing, and the housing further includes pins and the pins are disposed on the base or the housing, and the co-packaged device is connected to external components through the pins.

8. The co-packaged device according to claim 7, wherein, The pins of the power switch chip, the battery management chip, and the processing chip are connected to the pins through wire bonding.

9. The co-packaged device according to claim 8, wherein The power switch chip, the battery management chip, and the processing chip are injection-molded and encapsulated into the housing.

10. A prosecution processing device, characterized in that, Including: The co-packaged device according to any one of claims 1 to 9.

11. The prosecution processing device according to claim 10, wherein, Further including: A current sensing resistor, the current sensing resistor is connected in a charging and / or discharging circuit for detecting a charging and / or discharging current, and the pins of the co-packaged device receive the charging and / or discharging current, wherein the sampling resistor is disposed inside or outside the battery management chip.

12. The prosecution processing device according to claim 10, characterized in that, Further including: A thermistor, the thermistor is disposed near the battery and is used for detecting the temperature of the battery, and the pins of the co-packaged device receive the temperature value detected by the thermistor.

13. The prosecution processing device according to claim 10, characterized in that, The battery is a lithium battery or a battery pack formed by two or more lithium batteries, and the pins of the co-packaged device receive the detection voltage of the one lithium battery or each lithium battery of the battery pack.

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