A lithium battery alarm system and battery management system

Abstract

The utility model relates to a lithium battery alarm system and a battery management system. The lithium battery alarm system is used to alarm when an abnormal state occurs during the operation of a battery pack module, and includes: an information acquisition module, the information acquisition module is used to collect parameter information of each battery in the battery pack module; an information processing module, connected to the information acquisition module, the information processing module is used to receive parameter information of each battery, and compare the parameter information of each battery with the preset parameter information in the information processing module; the parameter information outside the preset parameter information is processed according to the time factor and a processing result is generated; an alarm module, the alarm module performs a corresponding alarm operation based on the processing result generated by the information processing module. The lithium battery alarm system and battery management system provided by the present application divide the warning level according to the length of time when the operating parameters are abnormal, and the warning is accurate and false alarms are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery alarms, in particular to a lithium battery alarm system and a battery management system. Background Art

[0002] The battery management system (BMS) ensures the safe and reliable operation of the battery and realizes functions such as battery data collection, battery status measurement, communication, safety management, thermal management, and balancing management. The BMS performs fault diagnosis, battery protection, and temperature control by monitoring parameters such as voltage, current, internal battery temperature, and ambient temperature during the charging and discharging process.

[0003] The existing battery management system tests the entire battery pack by measuring the parameters of the overall battery data of the battery pack, and compares the measured parameters of the battery pack with preset standard parameters to determine whether the battery pack is operating in a normal state.

[0004] In existing battery packs, the physical properties of battery cells may change due to manufacturing processes, ambient temperature, charge and discharge cycles, and battery aging. As a result, the capacities of the batteries in the battery pack vary. When some batteries are fully charged, other batteries are still not fully charged. Overcharging the battery may cause it to explode, while undercharging may damage the battery's chemical properties and shorten its life. Utility Model Content

[0005] Based on this, it is necessary to provide a lithium battery alarm system and a battery management system that detects each battery in a battery pack and directly alarms when a battery is abnormal.

[0006] In a first aspect, the present application provides a lithium battery alarm system for alarming when an abnormal state occurs during the operation of a battery pack module. The alarm system includes:

[0007] An information acquisition module, which is used to acquire parameter information of each battery in the battery pack module;

[0008] An information processing module connected to the information acquisition module, the information processing module is used to receive parameter information of each battery, and compare the parameter information of each battery with preset parameter information in the information processing module; the parameter information outside the preset parameter information is processed according to the time factor and a processing result is generated;

[0009] An alarm module performs a corresponding alarm operation based on the processing result generated by the information processing module.

[0010] In one embodiment, the information collection module further includes:

[0011] A voltage acquisition unit, wherein the voltage acquisition unit is used to collect voltage data of each battery;

[0012] and / or, a current acquisition unit, the current acquisition unit being used to acquire current data of each battery;

[0013] and / or, an internal resistance acquisition unit, the internal resistance acquisition unit being used to acquire internal resistance data of each battery;

[0014] And / or, a temperature acquisition unit, wherein the temperature acquisition unit is used to acquire temperature data of each battery.

[0015] In one embodiment, the information processing module further includes:

[0016] An information receiving unit, the information receiving unit is used to receive parameter information of the information acquisition module and output the parameter information;

[0017] An information storage unit, the information storage unit is used to store the preset parameter information and the time factor, the preset parameter information includes a parameter threshold, and the time factor includes a time threshold;

[0018] An information comparison unit, the information comparison unit is used to compare the parameter information output by the information receiving unit with the parameter threshold in the information storage unit;

[0019] A timing module, wherein when the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit, the timing module performs a timing operation until the parameter information is within the parameter threshold, stops timing and outputs timing information;

[0020] The early warning unit is used to record the number of cycles in which the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit and output a corresponding early warning level.

[0021] Wherein, when the duration that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit is equal to the time threshold, it is recorded as one cycle.

[0022] In one embodiment, the alarm module includes:

[0023] A first-level warning module, the first-level warning module is used to record the first-level warning alert sent by the warning unit and send a first-level alarm message, the first-level warning alert is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to a time threshold;

[0024] A secondary warning module, the secondary warning module is used to record the secondary warning warning sent by the warning unit and send a secondary alarm message, the secondary warning warning is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to two time thresholds;

[0025] A three-level early warning module is used to record the three-level early warning warning sent by the early warning unit and send a three-level alarm message. The three-level early warning warning is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration of not less than three time thresholds.

[0026] In one embodiment, the alarm module further includes:

[0027] A light alarm unit, the light alarm unit is used to issue a light alarm message;

[0028] A buzzer alarm unit, the buzzer alarm unit is used to issue buzzer alarm information;

[0029] A vibration alarm unit, the vibration alarm unit is used to send vibration alarm information;

[0030] The light alarm unit, buzzer alarm unit and vibration alarm unit send out corresponding alarm information according to preset early warning alarm information.

[0031] In one embodiment, the light alarm unit, buzzer alarm unit and vibration alarm unit send corresponding alarm information according to the preset early warning information, including:

[0032] When the light alarm unit receives the first-level alarm information, the light alarm unit sends out light alarm information;

[0033] When the buzzer alarm unit receives the second-level alarm information, the buzzer alarm unit sends out a buzzer alarm information;

[0034] When the vibration alarm unit receives the third-level alarm information, the vibration alarm unit sends out vibration alarm information.

[0035] In one embodiment, the light alarm unit, buzzer alarm unit and vibration alarm unit send corresponding alarm information according to the preset early warning information, including:

[0036] When the light alarm unit receives the first-level alarm information, the light alarm unit sends out light alarm information;

[0037] When the buzzer alarm unit receives the secondary alarm information, the light alarm unit sends out light alarm information and the buzzer alarm unit sends out buzzer alarm information;

[0038] When the vibration alarm unit receives the third-level alarm information, the light alarm unit sends out light alarm information, the buzzer alarm unit sends out buzzer alarm information, and the vibration alarm unit sends out vibration alarm information.

[0039] In one embodiment, the alarm module further includes:

[0040] A signal receiving unit, the signal receiving unit is used to receive alarm information;

[0041] A wireless sending module is used to send the alarm information to the signal receiving unit.

[0042] In a second aspect, a computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor includes the lithium battery alarm system described in the first aspect.

[0043] In a third aspect, the present application also provides a battery management system, including the lithium battery alarm system described in the first aspect.

[0044] The lithium battery alarm system and battery management system provided in this application divide the warning levels according to the duration of abnormal operation parameters, and the warning is accurate and false alarms are prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 This is a connection diagram for the lithium battery alarm system. DETAILED DESCRIPTION

[0047] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0049] It is understood that the terms "first", "third", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a third resistor, and similarly, a third resistor may be referred to as a first resistor. Both the first resistor and the third resistor are resistors, but they are not the same resistor.

[0050] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0051] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0052] like Figure 1 As shown, a lithium battery alarm system is used to alarm when an abnormal state occurs during the operation of a battery pack module, including: an information collection module, an information processing module and an alarm module;

[0053] An information acquisition module, which is used to collect parameter information of each battery in the battery pack module;

[0054] An information processing module connected to the information acquisition module, the information processing module is used to receive parameter information of each battery, and compare the parameter information of each battery with preset parameter information in the information processing module; the parameter information outside the preset parameter information is processed according to the time factor and a processing result is generated;

[0055] The alarm module performs corresponding alarm operations based on the processing results generated by the information processing module.

[0056] The lithium battery alarm system and battery management system provided in this application divide the warning levels according to the duration of abnormal operation parameters, and the warning is accurate and false alarms are prevented.

[0057] like Figure 1 As shown, the information acquisition module also includes a voltage acquisition unit, a current acquisition unit, an internal resistance acquisition unit and a temperature acquisition unit;

[0058] A voltage acquisition unit, which is used to collect voltage data of each battery;

[0059] A current acquisition unit, which is used to collect current data of each battery;

[0060] An internal resistance acquisition unit, which is used to collect internal resistance data of each battery;

[0061] The temperature acquisition unit is used to collect temperature data of each battery.

[0062] The temperature acquisition unit includes multiple temperature sensors, some of which are arranged on the battery surface, for example, on the battery pole, and the other part is arranged in the environment where the battery is located to measure the ambient temperature. The information acquisition module continuously collects information at a certain frequency, and the certain frequency is 100 times / second to 1 time / second.

[0063] like Figure 1 As shown, the information processing module also includes: an information receiving unit, an information storage unit, an information comparison unit, a timing module and an early warning unit;

[0064] An information receiving unit, the information receiving unit is used to receive parameter information from the information acquisition module and output the parameter information;

[0065] An information storage unit, the information storage unit is used to store the preset parameter information and the time factor, the preset parameter information includes a parameter threshold, and the time factor includes a time threshold;

[0066] An information comparison unit, the information comparison unit is used to compare the parameter information output by the information receiving unit with the parameter threshold in the information storage unit;

[0067] A timing module, the timing module is used for, when the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit, performing a timing operation until the parameter information is within the parameter threshold, stopping the timing and outputting the timing information;

[0068] An early warning unit, the early warning unit is used to record the number of cycles in which the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit and output a corresponding early warning level;

[0069] Wherein, a duration during which the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit and is equal to the time threshold is recorded as one cycle.

[0070] The information processing module can adopt a single-chip microcomputer. The specific information processing module includes an information receiving unit, an information comparison unit, an information storage unit, a timing unit and an early warning recording unit. The information receiving unit is used to receive the lithium battery operating parameters collected by the information collection module, and transmit the operating parameters to the information comparison unit for comparison with the parameter threshold pre-stored in the information storage unit. The timing unit is used to time the time when the operating parameter exceeds the parameter threshold, and compare it with the preset time period pre-stored in the timing unit; the early warning recording unit is used to record the number of cycles when the operating parameter duration exceeds the preset time, and record according to the pre-stored warning level and output the corresponding level of early warning.

[0071] like Figure 1 As shown, the alarm module includes: a first-level warning module, a second-level warning module and a third-level warning module;

[0072] The first-level warning module is used to record the first-level warning alert sent by the warning unit and send a first-level alarm message. The first-level warning alert is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to a time threshold.

[0073] If the operating parameter exceeds the parameter threshold continuously within a time threshold period, it is recorded as a level 1 alarm record and a level 1 alarm warning is output; if the operating parameter is within the time threshold period or is lower than the parameter threshold, the timing stops; the threshold time period can be 1s, 2s, 3s, 5s, 10s, 20s, 30s, 40s, 50s, 1min, 2min, 5min, etc.

[0074] The secondary warning module is used to record the secondary warning warning sent by the warning unit and send secondary alarm information. The secondary warning warning is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to two time thresholds.

[0075] When the operating parameters exceed the parameter threshold continuously within the time period of two cycles, it is recorded as a level 2 alarm record and a level 2 alarm warning is output; when the operating parameters exceed the parameter threshold within the preset time period of the first cycle and are lower than the parameter threshold within the preset time period of the second cycle, the timing stops and is reset to zero, and restarts from the level 1 warning.

[0076] The three-level warning module is used to record the three-level warning warning sent by the warning unit and send a three-level alarm message. The three-level warning warning means that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration of not less than three time thresholds.

[0077] When the operating parameters continue to exceed the parameter threshold within the preset time period of three cycles, it is recorded as a third-level alarm record and a third-level alarm warning is output. When the operating parameters are lower than the parameter threshold within the preset time period of the third cycle, the timing stops and is reset to zero, and restarts from the first-level warning.

[0078] For example, the time threshold is 5s.

[0079] The duration T of exceeding the parameter threshold; when 5s≦T<10s, it is recorded as a first-level alarm record and a first-level alarm warning is output, and the timing is stopped and started from the first-level warning; when 10s≦T<15s, it is recorded as a second-level alarm record and a second-level alarm warning is output, and the timing is stopped and started from the first-level warning; when 15s≦T, it is recorded as a third-level alarm record and a third-level alarm warning is output.

[0080] For example, the first-level alarm uses light alarm, the second-level alarm uses vibration alarm, and the third-level alarm uses vibration alarm, or uses different lights, or different sounds, or a combination of methods to alarm. The early warning module also includes a wireless transmission module and a signal receiving unit. The wireless transmission module is used to send alarm information to the signal receiving unit. The signal receiving unit can be an APP installed on the user's mobile phone, etc.

[0081] The alarm module also includes: a light alarm unit, a buzzer alarm unit and a vibration alarm unit;

[0082] A light alarm unit, the light alarm unit is used to issue a light alarm message;

[0083] A buzzer alarm unit, the buzzer alarm unit is used to issue buzzer alarm information;

[0084] A vibration alarm unit, the vibration alarm unit is used to send vibration alarm information;

[0085] The light alarm unit, buzzer alarm unit and vibration alarm unit send out corresponding alarm information according to the preset early warning alarm information.

[0086] The light alarm unit, the buzzer alarm unit and the vibration alarm unit send out corresponding alarm information according to the preset early warning alarm information, including: when the light alarm unit receives the first-level alarm information, the light alarm unit sends out the light alarm information; when the buzzer alarm unit receives the second-level alarm information, the buzzer alarm unit sends out the buzzer alarm information; when the vibration alarm unit receives the third-level alarm information, the vibration alarm unit sends out the vibration alarm information.

[0087] The light alarm unit, the buzzer alarm unit and the vibration alarm unit send out corresponding alarm information according to the preset early warning alarm information, including: when the light alarm unit receives the first-level alarm information, the light alarm unit sends out the light alarm information; when the buzzer alarm unit receives the second-level alarm information, the light alarm unit sends out the light alarm information, and the buzzer alarm unit sends out the buzzer alarm information; when the vibration alarm unit receives the third-level alarm information, the light alarm unit sends out the light alarm information, the buzzer alarm unit sends out the buzzer alarm information, and the vibration alarm unit sends out the vibration alarm information.

[0088] Alarm module, the alarm module is used to receive the corresponding level of early warning alerts issued by the early warning recording unit and issue early warning alarms. The early warning module includes one or more combinations of light alarm units, buzzer alarm units and vibration alarms. For example, the first-level alarm uses light alarms, the second-level alarm uses vibration alarms, and the third-level alarm uses vibration alarms, or uses different lights, or different sounds, or a combination of methods to alarm. The early warning module also includes a wireless transmission module and a signal receiving unit. The wireless transmission module is used to send alarm information to the signal receiving unit. The signal receiving unit can be an APP installed on the user's mobile phone, etc.

[0089] The alarm module also includes: a signal receiving unit and a wireless sending module;

[0090] A signal receiving unit, the signal receiving unit is used to receive alarm information;

[0091] The wireless sending module is used to send the alarm information to the signal receiving unit.

[0092] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the above-mentioned lithium battery alarm system when executing the computer program.

[0093] A battery pack module, which is used for power supply operation; an information acquisition module, which is used for acquiring parameter information of each battery in the battery pack module; an information processing module, which is used for processing the parameter information of each battery acquired by the information acquisition module and generating processing results; an alarm module, which performs corresponding alarm operations based on the processing results generated by the information processing module.

[0094] A battery management system comprises the above-mentioned lithium battery alarm system.

[0095] A battery pack module, which is used for power supply operation; an information acquisition module, which is used for acquiring parameter information of each battery in the battery pack module; an information processing module, which is used for processing the parameter information of each battery acquired by the information acquisition module and generating processing results; an alarm module, which performs corresponding alarm operations based on the processing results generated by the information processing module.

[0096] In the description of this specification, the descriptions with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc., mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lithium battery alarm system, characterized in that: Used to alarm when abnormal conditions occur during the operation of the battery pack module. The alarm system includes: An information acquisition module, which is used to acquire parameter information of each battery in the battery pack module; An information processing module connected to the information acquisition module, the information processing module is used to receive parameter information of each battery, and compare the parameter information of each battery with preset parameter information in the information processing module; the parameter information outside the preset parameter information is processed according to the time factor and a processing result is generated; An alarm module, which performs a corresponding alarm operation based on the processing result generated by the information processing module; The information collection module also includes: A temperature acquisition unit, wherein the temperature acquisition unit is used to collect temperature data of each battery; Wherein, the temperature acquisition unit includes a plurality of temperature sensors, a part of the plurality of temperature sensors are arranged on the battery poles of each of the batteries, and another part of the plurality of temperature sensors are arranged in the environment where each of the batteries is located.

2. The lithium battery alarm system according to claim 1, characterized in that: The information collection module also includes: A voltage acquisition unit, wherein the voltage acquisition unit is used to collect voltage data of each battery; and / or, a current acquisition unit, the current acquisition unit being used to acquire current data of each battery; And / or, an internal resistance acquisition unit, wherein the internal resistance acquisition unit is used to acquire internal resistance data of each battery.

3. The lithium battery alarm system according to claim 1, characterized in that: The information processing module also includes: An information receiving unit, the information receiving unit is used to receive parameter information of the information acquisition module and output the parameter information; An information storage unit, the information storage unit is used to store the preset parameter information and the time factor, the preset parameter information includes a parameter threshold, and the time factor includes a time threshold; An information comparison unit, the information comparison unit is used to compare the parameter information output by the information receiving unit with the parameter threshold in the information storage unit; A timing module, wherein when the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit, the timing module performs a timing operation until the parameter information is within the parameter threshold, stops timing and outputs timing information; An early warning unit, the early warning unit is used to record the number of cycles in which the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit and output a corresponding early warning level; Wherein, a duration during which the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit and is equal to the time threshold is recorded as one cycle.

4. The lithium battery alarm system according to claim 3, characterized in that: The alarm module comprises: A first-level warning module, the first-level warning module is used to record the first-level warning alert sent by the warning unit and send a first-level alarm message, the first-level warning alert is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to a time threshold; A secondary warning module, the secondary warning module is used to record the secondary warning warning sent by the warning unit and send a secondary alarm message, the secondary warning warning is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration greater than or equal to two time thresholds; A three-level early warning module is used to record the three-level early warning warning sent by the early warning unit and send a three-level alarm message. The three-level early warning warning is that the parameter information output by the information receiving unit is outside the parameter threshold in the information storage unit for a duration of not less than three time thresholds.

5. The lithium battery alarm system according to claim 4, characterized in that: The alarm module also includes: A light alarm unit, the light alarm unit is used to issue a light alarm message; A buzzer alarm unit, the buzzer alarm unit is used to issue buzzer alarm information; A vibration alarm unit, the vibration alarm unit is used to send vibration alarm information; The light alarm unit, buzzer alarm unit and vibration alarm unit send out corresponding alarm information according to preset early warning alarm information.

6. The lithium battery alarm system according to claim 5, characterized in that: The light alarm unit, buzzer alarm unit and vibration alarm unit send corresponding alarm information according to the preset early warning information, including: When the light alarm unit receives the first-level alarm information, the light alarm unit sends out light alarm information; When the buzzer alarm unit receives the second-level alarm information, the buzzer alarm unit sends out a buzzer alarm information; When the vibration alarm unit receives the third-level alarm information, the vibration alarm unit sends out vibration alarm information.

7. The lithium battery alarm system according to claim 5, characterized in that: The light alarm unit, buzzer alarm unit and vibration alarm unit send corresponding alarm information according to the preset early warning information, including: When the light alarm unit receives the first-level alarm information, the light alarm unit sends out light alarm information; When the buzzer alarm unit receives the secondary alarm information, the light alarm unit sends out light alarm information and the buzzer alarm unit sends out buzzer alarm information; When the vibration alarm unit receives the third-level alarm information, the light alarm unit sends out light alarm information, the buzzer alarm unit sends out buzzer alarm information, and the vibration alarm unit sends out vibration alarm information.

8. The lithium battery alarm system according to claim 2, characterized in that: The alarm module also includes: A signal receiving unit, the signal receiving unit is used to receive alarm information; A wireless sending module is used to send the alarm information to the signal receiving unit.

9. A battery management system, characterized in that: Comprising a lithium battery alarm system as claimed in any one of claims 1 to 8.

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