Battery pack monitoring automatic protection circuit device

Abstract

The utility model discloses a battery pack monitoring automatic protection circuit device, which relates to the technical field of battery pack physical connection, and comprises a battery pack, the battery pack comprises a plurality of batteries which are communicated with one another, and self-checking protection assemblies are communicated with positive and negative electrode interfaces of the plurality of batteries. The self-checking protection assembly comprises metal wiring terminals fixed to the positive electrode and the negative electrode of the battery, an insulating shell is fixed to one ends of the metal wiring terminals, a data acquisition component is fixed in the insulating shell, and a temperature control switch component is fixed to the position, located on one side of the data acquisition component, in the insulating shell. When the battery outputs overload current to cause heating of the metal wiring terminal, the surface temperature of the metal wiring terminal connected with the positive electrode and the negative electrode of the battery is monitored through the data acquisition component, and the fault battery is accurately marked by analyzing the data monitored by the data acquisition component. And meanwhile, the temperature control switch part receives abnormal heat conducted by the metal wiring terminal to disconnect a circuit connected with the fault battery, so that the fault range is prevented from being expanded.

Description

Technical Field

[0001] The utility model belongs to the technical field of physical connection of battery packs, in particular to a battery pack monitoring automatic protection circuit device. Background Art

[0002] A battery pack is a device composed of multiple batteries combined in a specific way to meet different voltage, capacity and power requirements. With the widespread application of electronic devices and the continuous development of technology, the research and development of battery packs is becoming increasingly important. The safety of battery packs is crucial because battery packs may face problems such as overcharging, short circuits, and overtemperature during use. These problems may cause safety accidents such as battery fires and explosions. Therefore, studying how to improve the safety of battery pack use is an important research direction of battery pack physical cross-connection technology.

[0003] Existing battery packs generally have monitoring devices at the total input and output ends to monitor the real-time data of the battery pack, so as to disconnect the circuit and protect the battery pack. However, problems with the battery pack are usually caused by failure of one or two batteries. At this time, the monitoring device cannot accurately determine which battery has a problem, and cannot quickly disconnect the circuit connected to the faulty battery, so that the overload current generated by the faulty battery flows in the circuit before disconnection, which will damage various electronic components on the circuit. Utility Model Content

[0004] The utility model aims to provide a battery pack monitoring automatic protection circuit device, which solves the problem of the existing battery pack monitoring protection device that it cannot accurately determine which battery has a problem and cannot quickly disconnect the circuit connected to the faulty battery through the arrangement of a data acquisition component and a temperature control switch component.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a battery pack monitoring automatic protection circuit device, comprising a battery pack, wherein the battery pack comprises a plurality of batteries connected to each other, and the positive and negative electrode interfaces of the plurality of batteries are both connected with self-checking protection components;

[0007] The self-check protection component includes a metal terminal fixed on the positive and negative electrodes of the battery, an insulating shell is fixed at one end of the metal terminal, a data acquisition component is fixed inside the insulating shell, and a temperature control switch component is fixed inside the insulating shell on one side of the data acquisition component;

[0008] The temperature-controlled switch component includes a temperature-sensitive connecting piece fixed to an outer side surface of an insulating shell, one side surface of the temperature-sensitive connecting piece is in contact with a metal terminal, a temperature-controlled normally closed switch is fixed inside the temperature-sensitive connecting piece, the output end of the temperature-controlled normally closed switch is connected to a metal connecting piece, and one end of the metal connecting piece is connected to a single-pole power socket fixed to an outer side surface of the insulating shell.

[0009] The utility model is further configured that the positive and negative electrode interfaces of the battery are both fixed with temperature-controlled normally closed switch terminals located at the bottom of the metal terminal, and the temperature-controlled normally closed switch terminals are connected to the temperature-sensitive connecting piece.

[0010] The utility model is further configured such that a single-pole power socket on a positive pole of the battery is connected to a single-pole power socket on an adjacent negative pole of the battery through a power line.

[0011] The utility model is further configured such that the data acquisition component includes a fuse box fixed in an insulating shell, a plurality of resettable chip fuses are fixed inside the fuse box, the input ends of the plurality of resettable chip fuses are all connected to metal wiring terminals, and the output ends of the plurality of resettable chip fuses are commonly connected to a data collector.

[0012] A temperature sensor is fixed on one side of the metal terminal, the output end of the temperature sensor is connected to the input end of the data collector, and the output end of the data collector is connected to a detection data adapter socket fixed on an outer side of the insulating shell.

[0013] The utility model is further configured such that the detection data transfer sockets located on the positive and negative electrode interfaces of the battery are both connected to data shielding cables, the ends of the two data shielding cables away from the detection data transfer sockets are commonly connected to a data transfer three-way socket, and the output ports of the data transfer three-way sockets are connected to a wireless data transmitter via the data shielding cables.

[0014] The utility model is further configured that two patch type temperature sensors are fixed to an outer side surface of the battery, and the two patch type temperature sensors are connected to a data transfer three-way socket through a data shielding cable.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model connects the data collector to the circuit by using a self-resetting chip fuse, and monitors the surface temperature of the metal terminal by a temperature sensor fixed on one side of the metal terminal, so that when the battery outputs an overload current, the self-resetting chip fuse automatically disconnects the circuit to protect the data collector and the battery from abnormal short circuit and line leakage to prevent DC backflow. At the same time, the metal terminal will start to heat up after the overload current is passed, and the temperature sensor will transmit the abnormal data to the data collector to accurately mark the faulty battery.

[0017] 2. The utility model independently sets a temperature-controlled normally closed switch in the positive and negative pole connection circuit of adjacent batteries to control the opening and closing of the circuit, so that when the battery outputs an overload current, the metal terminal generates heat and transfers the heat to the temperature-controlled normally closed switch. When the abnormal temperature exceeds the set value, the temperature-controlled normally closed switch quickly disconnects the circuit, thereby avoiding further expansion of the fault range.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The figure is a structural diagram of a battery pack monitoring automatic protection circuit device.

[0021] Figure 2 It is a structural diagram of the self-check protection component.

[0022] Figure 3 A cross-sectional view of the self-test protection component.

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the self-test protection component and the wireless data transmitter.

[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Figure 6 It is a structural schematic diagram of the connection of the self-test protection components on the positive and negative electrodes of two adjacent batteries.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Battery pack; 101. Battery; 102. Temperature-controlled normally closed switch terminal; 2. Self-test protection component; 201. Metal terminal; 202. Insulating shell; 3. Data acquisition component; 301. Fuse box; 302. Self-recovery chip fuse; 303. Temperature sensor; 304. Data collector; 305. Detection data transfer socket; 306. Data shielding cable; 4. Temperature-controlled switch component; 401. Temperature-sensing connecting piece; 402. Temperature-controlled normally closed switch; 403. Metal connecting piece; 404. Single-pole power socket; 5. Data transfer three-way socket; 6. Wireless data transmitter; 7. Chip temperature sensor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0030] See also Figure 1-6 The utility model is a battery pack monitoring automatic protection circuit device, comprising a battery pack 1, the battery pack 1 comprises a plurality of batteries 101 connected to each other, the positive and negative interfaces of the plurality of batteries 101 are all connected with self-checking protection components 2, the self-checking protection component 2 comprises a metal terminal 201 fixed on the positive and negative electrodes of the battery 101, an insulating shell 202 is fixed at one end of the metal terminal 201, a data acquisition component 3 is fixedly arranged inside the insulating shell 202, a temperature control switch component 4 is fixed at one side of the data acquisition component 3 inside the insulating shell 202, the temperature control switch component 4 comprises a temperature sensing connecting piece 401 fixed on an outer side surface of the insulating shell 202, one side surface of the temperature sensing connecting piece 401 is in contact with the metal terminal 201, a temperature control normally closed switch 402 is fixed inside the temperature sensing connecting piece 401, an output end of the temperature control normally closed switch 402 is connected with a metal connecting piece 403, and one end of the metal connecting piece 403 is connected with a single-pole power socket 404 fixed on an outer side surface of the insulating shell 202.

[0031] Specifically, the positive and negative electrode interfaces of the battery 101 are fixed with a temperature-controlled normally closed switch terminal 102 located at the bottom of the metal terminal 201, the temperature-controlled normally closed switch terminal 102 is connected to the temperature-sensing connecting piece 401, and the single-pole power socket 404 on the positive electrode of a battery 101 is connected to the single-pole power socket 404 on the negative electrode of an adjacent battery 101 through a power cord.

[0032] The operation process of this embodiment is as follows: the positive and negative electrodes of any battery 101 constituting the battery pack 1 are connected to the temperature-sensitive connecting piece 401 through the temperature-controlled normally closed switch terminal 102, and the current reaches the temperature-controlled normally closed switch 402 after passing through the temperature-controlled normally closed switch 402. The current reaches the metal connecting piece 403 after passing through the temperature-controlled normally closed switch 402, and then flows from the metal connecting piece 403 to the single-pole power socket 404 fixed on an outer side surface of the insulating shell 202, and the single-pole power socket 404 on the positive electrode of a battery 101 and the single-pole power socket 404 on the negative electrode of an adjacent battery 101 are connected to the circuits of the two adjacent batteries 101 by inserting the same power cord.

[0033] The metal terminal 201 has a certain resistance. When the current is overloaded, the metal terminal 201 will heat up, and the heat of the metal terminal 201 will be transferred to the temperature sensing connecting piece 401. The temperature sensing connecting piece 401 transfers the heat to the temperature-controlled normally closed switch 402. At this time, the temperature-controlled normally closed switch 402 will convert the high temperature signal into an electrical signal to control the temperature-controlled normally closed switch 402 to disconnect, thereby disconnecting the circuit of the faulty battery 101, and the temperature-controlled normally closed switch 402 will automatically close when the temperature returns to normal. Specific embodiment 2

[0035] See also Figure 1-6 The data acquisition component 3 includes a fuse box 301 fixed in the insulating shell 202, and a plurality of self-resetting chip fuses 302 are fixed inside the fuse box 301. The input ends of the plurality of self-resetting chip fuses 302 are connected to the metal terminal 201, and the output ends of the plurality of self-resetting chip fuses 302 are commonly connected to the data collector 304. A temperature sensor 303 is fixed on one side of the metal terminal 201, and the output end of the temperature sensor 303 is connected to the input end of the data collector 304. The output end of the data collector 304 is connected to a detection data adapter socket 305 fixed on an outer side of the insulating shell 202.

[0036] The operation process of this embodiment is as follows: metal terminals 201 are fixed on both the positive and negative electrodes of the battery 101, so that the current of the battery 101 first passes through the metal terminals 201 and reaches a plurality of independently protected self-recovery chip fuses 302 connected to the metal terminals 201. At this time, if the battery 101 continues to output overload current, the self-recovery chip fuse 302 will automatically disconnect the circuit to protect the data collector 304 connected to the output end of the self-recovery chip fuse 302. After the fault is eliminated, the self-recovery chip fuse 302 will resume conduction, and there is no need to replace a new self-recovery chip fuse 302.

[0037] At the same time, the temperature sensor 303 fixed on one side of the metal terminal 201 will monitor the surface temperature of the metal terminal 201 in real time. The temperature sensor 303 transmits the monitored data to the data collector 304, and receives the data in the data collector 304 by detecting the data adapter socket 305. When the surface temperature of the metal terminal 201 is too high due to the overload current output by the battery 101, the temperature control switch component 4 will disconnect the circuit. At this time, the faulty battery 101 in the battery pack 1 can be analyzed through the data in the data collector 304. Specific embodiment three

[0039] See also Figure 1-6 On the basis of specific embodiment 1 and specific embodiment 2, specifically, the detection data transfer sockets 305 located on the positive and negative electrode interfaces of the battery 101 are connected to the data shielding cables 306, and the ends of the two data shielding cables 306 away from the detection data transfer sockets 305 are commonly connected to the data transfer three-way socket 5, and the output port of the data transfer three-way socket 5 is connected to the wireless data transmitter 6 through the data shielding cable 306, and two patch temperature sensors 7 are fixed to an outer side surface of the battery 101, and the two patch temperature sensors 7 are commonly connected to the data transfer three-way socket 5 through the data shielding cable 306.

[0040] The operation process of this embodiment is as follows: the data collected by the data collector 304 on the positive and negative electrodes of each battery 101 in the battery pack 1 is transmitted to the wireless data transmitter 6 via the data shielded cable 306 through the detection data adapter socket 305. At the same time, the two patch temperature sensors 7 transmit the real-time temperature data of the surface of the battery 101 monitored by the data shielded cable 306 to the wireless data transmitter 6, so as to monitor the temperature at the middle position of the battery 101, and the wireless data transmitter 6 transmits all the collected data to the corresponding receiver through wireless signals.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A battery pack monitoring automatic protection circuit device, comprising a battery pack (1), wherein the battery pack (1) comprises a plurality of batteries (101) connected to each other; characterized in that: A self-checking protection component (2) is connected to the positive and negative electrode interfaces of a plurality of the batteries (101); The self-check protection component (2) comprises a metal terminal (201) fixed on the positive and negative electrodes of the battery (101); an insulating housing (202) is fixed to one end of the metal terminal (201); a data acquisition component (3) is fixedly arranged inside the insulating housing (202); and a temperature control switch component (4) is fixed inside the insulating housing (202) and located on one side of the data acquisition component (3); The temperature-controlled switch component (4) comprises a temperature-sensitive connecting piece (401) fixed on an outer side surface of an insulating housing (202); one side surface of the temperature-sensitive connecting piece (401) is in contact with a metal terminal (201); a temperature-controlled normally closed switch (402) is fixed inside the temperature-sensitive connecting piece (401); an output end of the temperature-controlled normally closed switch (402) is connected to a metal connecting piece (403); one end of the metal connecting piece (403) is connected to a single-pole power socket (404) fixed on an outer side surface of the insulating housing (202).

2. A battery pack monitoring automatic protection circuit device according to claim 1, characterized in that: A temperature-controlled normally closed switch connection terminal (102) located at the bottom of the metal connection terminal (201) is fixed to both the positive and negative electrode interfaces of the battery (101), and the temperature-controlled normally closed switch connection terminal (102) is connected to the temperature-sensing connection piece (401).

3. A battery pack monitoring automatic protection circuit device according to claim 2, characterized in that: A single-pole power socket (404) on the positive pole of one battery (101) is connected to a single-pole power socket (404) on the negative pole of an adjacent battery (101) via a power line.

4. A battery pack monitoring automatic protection circuit device according to claim 3, characterized in that: The data acquisition component (3) comprises a fuse box (301) fixed in an insulating housing (202), a plurality of self-resetting chip fuses (302) are fixed inside the fuse box (301), the input ends of the plurality of self-resetting chip fuses (302) are all connected to the metal terminal (201), and the output ends of the plurality of self-resetting chip fuses (302) are commonly connected to a data acquisition device (304); A temperature sensor (303) is fixed on one side of the metal terminal block (201); the output end of the temperature sensor (303) is connected to the input end of a data collector (304); and the output end of the data collector (304) is connected to a detection data adapter socket (305) fixed on an outer side of the insulating housing (202).

5. A battery pack monitoring automatic protection circuit device according to claim 4, characterized in that: The detection data transfer sockets (305) located on the positive and negative electrode interfaces of the battery (101) are both connected to data shielded cables (306), and one end of the two data shielded cables (306) away from the detection data transfer sockets (305) is commonly connected to a data transfer three-way socket (5), and the output port of the data transfer three-way socket (5) is connected to a wireless data transmitter (6) via the data shielded cables (306).

6. A battery pack monitoring automatic protection circuit device according to claim 5, characterized in that: Two patch-type temperature sensors (7) are fixed to an outer side surface of the battery (101), and the two patch-type temperature sensors (7) are connected to the data transfer three-way socket (5) via a data shielding cable (306).

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