CN106058342A - Starting storage battery - Google Patents

Abstract

The invention provides a starting battery, which comprises an upper cover (1) and a lower cover (2) buckled and assembled with the upper cover (1), wherein the upper cover (1) is provided with a positive electrode head (3) and a negative electrode head (4), the starting battery also comprises a battery assembly (5) and a battery management system (6), the battery assembly (5) is composed of a plurality of lithium ion batteries with positive electrodes and negative electrodes led out in the same direction, the positive electrode of the battery assembly (5) is electrically connected with the positive electrode head (3) through the battery management system (6), the negative electrode of the battery assembly (5) is electrically connected with the negative electrode head (4) through the battery management system (6), and the battery management system (6) is used for managing the battery assembly (5). The invention is suitable for vehicle-mounted starting, ship-mounted starting, engine starting, generator starting and the like. The invention has the advantages of small occupied space, no need of combination, convenient use, long service life, small heat emission, energy conservation and environmental protection.

Description

a starter battery

technical field

The invention relates to the technical field of batteries, in particular to a starter storage battery.

Background technique

The traditional starter batteries are all lead-acid batteries. The traditional lead-acid monomer batteries can only be made into 12V. To increase the voltage, several lead-acid monomer batteries must be connected in series, such as two lead-acid monomer batteries connected in series. 24V is formed, 3 lead-acid monomer batteries are connected in series to form 36V, 4 lead-acid monomer batteries are connected in series to form 48V and so on. The lead-acid battery formed in this way takes up a lot of space and is inconvenient to use, and the traditional lead-acid battery has a short service life, is easy to generate heat, is not energy-saving, and is not environmentally friendly.

In view of this, the present invention is specially proposed to correct the deficiencies of the above-mentioned prior art.

Contents of the invention

Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a starter battery which takes up little space, does not require assembly, is easy to use, has a long life, generates little heat, and is energy-saving and environment-friendly.

In order to solve the above-mentioned technical problems, the present invention provides a starting battery, which includes an upper cover, a lower cover snapped and assembled with the upper cover, the upper cover is provided with a positive electrode head and a negative electrode head, and also includes several positive and negative electrodes. A battery assembly and a battery management system composed of lithium-ion batteries drawn in the same direction, the positive pole of the battery assembly is electrically connected to the positive head through the battery management system, and the negative electrode of the battery assembly is electrically connected to the negative head through the battery management system; The battery management system described above is used to manage battery packs.

A further improvement of the present invention is that the battery management system includes a central processing module, a battery equalization circuit, a battery interface circuit, an overcharge and overdischarge detection circuit, a charge input circuit, a discharge output circuit, and a current detection self-recovery protection irreversible short circuit protection circuit; The central processing module is electrically connected to the battery equalization circuit, overcharge and overdischarge detection circuit, charging input circuit, discharge output circuit, current detection self-recovery protection irreversible short circuit protection circuit, and the battery interface circuit is respectively connected to the battery equalization circuit, overcharge The charging and over-discharging detection circuit, the charging input circuit, and the current detection self-recovery protection irreversible short-circuit protection circuit are electrically connected, and the current detection self-recovery protection irreversible short-circuit protection circuit is electrically connected to the discharge output circuit.

A further improvement of the present invention is that the battery management system includes a central processing module, a battery equalization circuit, a battery interface circuit, an overcharge and overdischarge detection circuit, a charge and discharge output circuit, and a current detection irreversible short circuit protection circuit; the central processing module is respectively It is electrically connected with the battery balance circuit, overcharge and overdischarge detection circuit, charge and discharge output circuit, and current detection irreversible short circuit protection circuit. The battery interface circuit is respectively connected with the battery balance circuit, overcharge and overdischarge detection circuit, charge and discharge output circuit, current The detection irreversible short circuit protection circuit is electrically connected, and the current detection irreversible short circuit protection circuit is electrically connected to the charge and discharge output circuit.

A further improvement of the present invention is that the central processing module calculates peripheral input signals at high speed through the MCU, and uses the MCU to control the working status of each controlled circuit; the battery equalization circuit detects the battery voltage through the overcharge and overdischarge detection circuit. A certain voltage threshold triggers the conduction of the corresponding MOS tube, and the charging current of the cascaded battery is reduced through the discharge of the MOS tube and the corresponding resistance, so as to achieve equilibrium; the battery interface circuit connects the battery components to the battery management system ; The overcharge and overdischarge detection circuit inputs the instant voltage of each cascaded battery through the RC circuit, and the MCU analyzes whether the voltage of the battery pack is normal; the charging input circuit controls the charging MOS conduction through the MCU control signal high potential to charge, Peripheral battery voltage detection low voltage indicates that it is fully charged or charging is faulty, then turn off the MOS tube and disconnect the charging; the discharge output circuit flows out current through the resistor array through the MOS tube to supply power to the load; the current detection self-recovery protection irreversible short circuit The protection circuit provides the detection voltage to the MCU through the resistor array, and the MCU calculates the corresponding current value to control charging, overcharging, discharging, overdischarging, short circuit and control the corresponding circuit operation. Threshold, close the output of the discharge MOS tube, if the load is short-circuited, the resistor array will be blown to protect the battery components.

A further improvement of the present invention is that the central processing module calculates peripheral input signals at high speed through the MCU, and uses the MCU to control the working status of each controlled circuit; the battery equalization circuit detects the battery voltage through the overcharge and overdischarge detection circuit. A certain voltage threshold triggers the conduction of the corresponding MOS tube, and the charging current of the cascaded battery is reduced through the discharge of the MOS tube and the corresponding resistance, so as to achieve equilibrium; the battery interface circuit connects the battery components to the battery management system ; The overcharge and overdischarge detection circuit inputs the instant voltage of each cascaded battery through the RC loop, and the MCU analyzes whether the voltage of the battery pack is normal; the charge and discharge output circuit controls the charging MOS conduction to charge through the MCU control signal high potential, The peripheral battery voltage detects the low voltage to indicate that it is fully charged or the charging is faulty, then the MOS tube is turned off to disconnect the charging, and the current flows out of the MOS tube through the resistor array to supply power to the load; the current detection irreversible short-circuit protection circuit sends the MCU to the MCU through the resistor array Provide detection voltage, MCU calculates the corresponding current value to control charging, overcharging, discharging, overdischarging, short circuit and control the corresponding circuit work, if the load is short circuited, the resistor array will be blown to protect the battery components.

A further improvement of the present invention is that the battery assembly is composed of N lithium-ion battery cells connected in series and parallel.

A further improvement of the present invention is that the voltage provided by the battery assembly is 12V or 24V or 36V or 48V or 60V or 72V.

A further improvement of the present invention is that an O-ring is provided between the upper cover and the lower cover.

Compared with the prior art, the present invention adopts a battery assembly with a voltage of 12V or 24V or 36V or 48V or 60V or 72V composed of N lithium-ion battery cells connected in series and parallel, and then the battery management system manages the battery components. The invention is suitable for vehicle starting, ship starting, engine starting, generator starting and the like. The invention takes up little space, does not need to be assembled, is convenient to use, has a long service life, generates little heat, and is energy-saving and environment-friendly.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the starting storage battery of the present invention;

Fig. 2 is a schematic structural block diagram of a battery management system according to Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the circuit structure of the battery management system according to Embodiment 1 of the present invention;

Fig. 4 is a schematic structural block diagram of a battery management system according to Embodiment 2 of the present invention;

FIG. 5 is a schematic diagram of the circuit structure of the battery management system according to Embodiment 2 of the present invention.

The names of the components in the figure are as follows:

1—top cover;

2—lower cover;

3—positive head;

4—negative head;

5—battery assembly;

6—battery management system;

61—central processing module;

62—Battery balance circuit;

63—battery interface circuit;

64—overcharge and overdischarge detection circuit;

65—charging input circuit;

66—discharge output circuit;

67—Current detection self-recovery protection irreversible short circuit protection circuit;

68—charge and discharge output circuit;

69—Current detection irreversible short circuit protection circuit.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a starter storage battery includes a top cover 1, a lower cover 2 snapped and assembled with the top cover 1, the top cover 1 is provided with a positive electrode head 3 and a negative electrode head 4, and also includes a plurality of positive electrode heads. A battery assembly 5 and a battery management system 6 composed of lithium-ion batteries whose negative poles are drawn in the same direction. 6 is electrically connected to the negative head 4; the battery management system 6 is used to manage the battery assembly 5.

Implementation mode one:

Specifically, as shown in FIG. 2, the battery management system 6 includes a central processing module 61, a battery equalization circuit 62, a battery interface circuit 63, an overcharge and overdischarge detection circuit 64, a charge input circuit 65, a discharge output circuit 66, a current Detection self-recovery protection irreversible short-circuit protection circuit 67; the central processing module 61 is respectively connected with the battery equalization circuit 62, overcharge and over-discharge detection circuit 64, charging input circuit 65, discharge output circuit 66, current detection self-recovery protection irreversible short-circuit protection circuit 67, the battery interface circuit 63 is electrically connected to the battery equalization circuit 62, the overcharge and overdischarge detection circuit 64, the charging input circuit 65, the current detection self-recovery protection irreversible short-circuit protection circuit 67, and the current detection self-recovery protection The irreversible short circuit protection circuit 67 is electrically connected to the discharge output circuit 66 .

Specifically, as shown in Figure 3, the central processing module 61 adopts a single-core or dual-core or multi-core MCU, and the present invention adopts a dual-core MCU, plus peripheral circuits, and the central processing module 61 uses a dual-core MCU to calculate peripheral input signals at a high speed through the dual-core MCU. Control the working status of each controlled circuit; the battery equalization circuit 62 includes 8 groups of circuits composed of MOS tubes and resistors, and detects the battery voltage through the overcharge and overdischarge detection circuit 64. If it exceeds the set voltage threshold, trigger the corresponding The MOS tube is turned on, and the charging current of the battery connected to this stage is reduced through the discharge of the MOS tube and the corresponding resistance, so as to achieve the purpose of balancing; the battery interface circuit 63 includes 3 groups of interfaces, and the battery interface circuit 63 Connect the battery pack 5 to the battery management system 6; the overcharge and overdischarge detection circuit 64 includes 8 groups of RC loops composed of resistors and capacitors, through which 8 groups of RC loops input the instant voltage of each cascaded battery, and the dual-core MCU analyzes Whether the voltage of the battery pack is normal or not is compared with the thresholds set by overcharge, overdischarge, and balance, so that the dual-core MCU takes corresponding actions; the charging input circuit 65 includes 8 groups of circuits composed of MOS tubes and resistors. The high potential of the dual-core MCU control signal controls the charging MOS to be turned on for charging, and the low voltage detected by the peripheral battery voltage indicates that the battery is fully charged or the charging is faulty, then the MOS tube is turned off and the charging is disconnected; the discharge output circuit 66 is connected to the charging input circuit 65 The same circuit structure includes 8 groups of circuits composed of MOS tubes and resistors. The process is just the opposite, and the current flows out through the resistor array through the MOS tubes to supply power to the load; the current detection self-recovery protection irreversible short-circuit protection circuit 67 is a resistor composed of multiple resistors Array, in this embodiment, 16 resistors are connected in parallel to form a resistor array, and the detection voltage is provided to the dual-core MCU through the resistor array. , through current detection and MCU calculation, if the over-current or short-circuit threshold is reached, the output of the discharge MOS tube is turned off to protect the battery assembly 5, and if the load is short-circuited, the resistor array is blown to protect the battery assembly 5.

The battery assembly 5 is composed of N lithium-ion battery cells connected in series and parallel, where N is a natural number. The voltage provided by the battery assembly 5 is 12V or 24V or 36V or 48V or 60V or 72V and so on. An O-ring is provided between the upper cover 1 and the lower cover 2 .

Implementation mode two:

Specifically, as shown in FIG. 4 , the battery management system 6 includes a central processing module 61, a battery balancing circuit 62, a battery interface circuit 63, an overcharge and overdischarge detection circuit 64, a charge and discharge output circuit 68, and an irreversible short circuit protection circuit for current detection. Circuit 69; the central processing module 61 is electrically connected to the battery equalization circuit 62, the overcharge and overdischarge detection circuit 64, the charge and discharge output circuit 68, and the current detection irreversible short circuit protection circuit 69, and the battery interface circuit 63 is respectively connected to the battery equalizer The circuit 62 , the overcharge and overdischarge detection circuit 64 , the charge and discharge output circuit 68 , and the current detection irreversible short circuit protection circuit 69 are electrically connected. The current detection irreversible short circuit protection circuit 69 is electrically connected to the charge and discharge output circuit 68 .

Specifically, as shown in Figure 5, the central processing module 61 adopts a single-core or dual-core or multi-core MCU, and the present invention adopts a dual-core MCU, plus peripheral circuits, and the central processing module 61 uses a dual-core MCU to calculate peripheral input signals at a high speed through the dual-core MCU. Control the working status of each controlled circuit; the battery equalization circuit 62 includes 8 groups of circuits composed of MOS tubes and resistors, and detects the battery voltage through the overcharge and overdischarge detection circuit 64. If it exceeds the set voltage threshold, trigger the corresponding The MOS tube is turned on, and the charging current of the battery connected to this stage is reduced through the discharge of the MOS tube and the corresponding resistance, so as to achieve the purpose of balancing; the battery interface circuit 63 includes 4 groups of interfaces, and the battery interface circuit 63 Connect the battery pack 5 to the battery management system 6; the overcharge and overdischarge detection circuit 64 includes 8 groups of RC loops composed of resistors and capacitors, through which 8 groups of RC loops input the instant voltage of each cascaded battery, and the dual-core MCU analyzes Whether the voltage of the battery pack is normal or not is compared with the thresholds set by overcharge, overdischarge, and balance, so that the dual-core MCU takes corresponding actions; the charge and discharge output circuit 68 includes a circuit composed of 10 MOS tubes and a resistor, The high potential of the dual-core MCU control signal controls the charging MOS to turn on for charging, and the peripheral battery voltage detects the low voltage to indicate that it is fully charged or the charging is faulty, then turn off the MOS tube and disconnect the charging. The discharging process is just the opposite of the charging process. Through the resistor array The current flowing out of the MOS tube supplies power to the load; the current detection irreversible short-circuit protection circuit 69 is a resistance array composed of multiple resistances. In this embodiment, 30 resistances are connected in parallel to form a resistance array, and the detection voltage is provided to the dual-core MCU through the resistance array. Dual-core The MCU calculates the corresponding current value to control charging, overcharging, discharging, overdischarging, short circuit and control the corresponding circuit operation. If the load is short circuited, the resistor array will be blown to protect the battery pack 5 .

The whole battery is composed of N lithium-ion battery cells with positive and negative electrodes drawn in the same direction in series and parallel, and N lithium-ion battery cells with positive and negative electrodes drawn in the same direction are welded in series and parallel on the PCB board. The battery pack 5 is Use the three-layer cover plate to fix several lithium-ion battery lock screws with positive and negative electrodes leading out in the same direction. The battery packs 5 should be connected in series and parallel with connecting pieces. On the lower cover 2, the control board lock screw is fixed on the upper cover 1. Between the upper cover 1 and the lower cover 2, an O-shaped sealing ring is used to seal against water and dust.

The structure of the lithium-ion battery with the positive and negative poles drawn in the same direction is an existing technology. You can refer to the patent number ZL201010197892.0, which is an invention patent for a lithium-ion battery with a cylindrical aluminum shell waist seal and positive and negative poles drawn in the same direction. . It includes a lithium-ion battery core. The lithium-ion battery core is installed in a cylindrical aluminum shell. The sealing belt and the waist belt are sealed in the cylindrical aluminum shell, and an explosion-proof indentation is provided on the bottom plane of the cylindrical aluminum shell. The positive and negative guide pins connected to the positive and negative poles are drawn out in the same direction from the end cap and riveted with the positive and negative tabs respectively. The top end of the cylindrical aluminum shell is sealed with an end cap or a rubber plug.

The structure of the lithium-ion battery whose positive and negative poles are drawn in the same direction is an existing technology, and the utility model patent whose application number is CN201520950415.5 can also be referred to. Ears, diaphragms and aluminum-plastic packaging shells spaced between the positive and negative ears, and electrolyte, wherein the positive ears include a positive current collector and a positive diaphragm attached to the positive current collector that contains positive active materials, and the negative ear includes The negative electrode current collector and the negative electrode diaphragm containing the negative electrode active material attached to the negative electrode current collector, the positive electrode ear, the positive electrode diaphragm, the negative electrode ear, the negative electrode diaphragm and the separator are wound and packed into the aluminum-plastic packaging case, It also includes a horn-type cover plate, the horn-type cover plate is covered on the aluminum-plastic packaging shell, the front side of the horn-type cover plate is provided with a positive pole horn terminal and a negative pole horn terminal, and the bottom surface of the horn-type cover plate is provided with a The positive lead terminal connected to the positive horn terminal, the negative lead terminal connected to the negative horn terminal, the positive lead terminal is electrically connected to the positive lug, and the negative lead terminal is electrically connected to the negative lug. The horn-shaped cover plate adopts a double-layer structure, the upper layer is a plastic layer, the lower layer is a bakelite layer, and the plastic layer is pasted on the bakelite layer. The number of the positive tab and the negative tab can be multiple pieces, specifically 2 to 6 pieces, and actually 3 or 4 pieces are used in use; the positive tab surrounds the periphery of the positive lead terminal and is electrically connected to it, The negative tab surrounds the periphery of the negative lead terminal and is electrically connected thereto. Both the positive lead terminal and the negative lead terminal are made of CP wire. Both the positive horn terminal and the negative horn terminal are made of aluminum; or the positive horn terminal is made of aluminum, and the negative horn terminal is made of copper. Specifically, the electrolyte contains dimethyl methyl phosphate and halogenated ethylene carbonate. The separator is a polypropylene/polyethylene/polypropylene three-layer separator, or a polyethylene single-layer separator, or a polypropylene single-layer separator. The lithium salt in the electrolyte is lithium hexafluorophosphate.

The advantage of the present invention is that the present invention adopts a battery assembly with a voltage of 12V or 24V or 36V or 48V or 60V or 72V composed of N lithium-ion battery cells connected in series and parallel, and then the battery management system manages the battery assembly . The invention is suitable for vehicle starting, ship starting, engine starting, generator starting and the like. The invention takes up little space, does not need to be assembled, is convenient to use, has a long service life, generates little heat, and is energy-saving and environment-friendly.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (8)

1. a startup storage battery, it includes upper cover (1), fastens, with upper cover (1), the lower cover (2) assembled, and described upper cover (1) is provided with Positive cartridge (3) and negative electrode head (4), it is characterised in that: also include being made up of to the lithium ion battery drawn several positive and negative electrodes in same Battery component (5) and battery management system (6), the positive pole of described battery component (5) pass through battery management system (6) and positive pole Head (3) electrical connection, the negative pole of described battery component (5) is electrically connected with negative electrode head (4) by battery management system (6);Described electricity Pond management system (6) is used for managing battery component (5).

Startup storage battery the most according to claim 1, it is characterised in that: described battery management system (6) includes central authorities' process Module (61), battery equalizing circuit (62), battery interface circuit (63), super-charge super-discharge testing circuit (64), charging input circuit (65), discharge output circuit (66), current detecting self-recoverage protect irreversible short-circuit protection circuit (67);Described central authorities process mould Block (61) exports electricity with battery equalizing circuit (62), super-charge super-discharge testing circuit (64), charging input circuit (65), electric discharge respectively Irreversible short-circuit protection circuit (67) electrical connection, described battery interface circuit (63) point are protected in road (66), current detecting self-recoverage Do not protect with battery equalizing circuit (62), super-charge super-discharge testing circuit (64), charging input circuit (65), current detecting self-recoverage Irreversible short-circuit protection circuit (67) electrically connects, and described current detecting self-recoverage is protected irreversible short-circuit protection circuit (67) and put Electricity output circuit (66) electrical connection.

Startup storage battery the most according to claim 1, it is characterised in that: described battery management system (6) includes central authorities' process Module (61), battery equalizing circuit (62), battery interface circuit (63), super-charge super-discharge testing circuit (64), discharge and recharge output electricity Road (68), the irreversible short-circuit protection circuit of current detecting (69);Described central processing module (61) respectively with battery equalizing circuit (62), super-charge super-discharge testing circuit (64), discharge and recharge output circuit (68), the irreversible short-circuit protection circuit of current detecting (69) electricity Connecting, described battery interface circuit (63) is defeated with battery equalizing circuit (62), super-charge super-discharge testing circuit (64), discharge and recharge respectively Go out circuit (68), the irreversible short-circuit protection circuit of current detecting (69) electrical connection, described current detecting irreversible short-circuit protection electricity Road (69) electrically connects with discharge and recharge output circuit (68).

Startup storage battery the most according to claim 2, it is characterised in that: described central processing module (61) is by MCU at a high speed Computing periphery input signal, uses MCU to control each controlled circuit duty;Described battery equalizing circuit (62) overcharged Put testing circuit (64) detection cell voltage, if having beyond the threshold voltage set, triggering the conducting of corresponding metal-oxide-semiconductor, passing through metal-oxide-semiconductor This tandem cell charging current is made to be decreased to reach equilibrium with corresponding conductive discharge;Described battery interface circuit (63) battery component (5) is accessed battery management system (6);Described super-charge super-discharge testing circuit (64) is each by the input of RC loop The instant voltage of tandem cell, the voltage that MCU analyzes set of cells is the most normal;Described charging input circuit (65) is controlled by MCU Signal high potential processed controls charging MOS conducting and is charged, by peripheral battery voltage detection low-voltage explanation substituted the bad for the good electricity or The faulty metal-oxide-semiconductor that then turns off that charges disconnects charging;Described discharge output circuit (66) flows out electric current by electric resistance array through metal-oxide-semiconductor Power to the load;Described current detecting self-recoverage protects irreversible short-circuit protection circuit (67) to be provided to MCU by electric resistance array Detection voltage, MCU computing becomes corresponding current value control charging, overcharge, electric discharge, overdischarge, short circuit and control corresponding electricity Road works, and by current detecting, MCU computing, if reaching stream or short circuit threshold values, closes electric discharge metal-oxide-semiconductor output, if loading short Electric resistance array, protection battery component (5) are then blown in road.

Startup storage battery the most according to claim 3, it is characterised in that: described central processing module (61) is by MCU at a high speed Computing periphery input signal, uses MCU to control each controlled circuit duty;Described battery equalizing circuit (62) overcharged Put testing circuit (64) detection cell voltage, if having beyond the threshold voltage set, triggering the conducting of corresponding metal-oxide-semiconductor, passing through metal-oxide-semiconductor This tandem cell charging current is made to be decreased to reach equilibrium with corresponding conductive discharge;Described battery interface circuit (63) battery component (5) is accessed battery management system (6);Described super-charge super-discharge testing circuit (64) is each by the input of RC loop The instant voltage of tandem cell, the voltage that MCU analyzes set of cells is the most normal;Described discharge and recharge output circuit (68) passes through MCU Control signal high potential controls charging MOS conducting and is charged, and has been substituted the bad for the good electricity by peripheral battery voltage detection low-voltage explanation Or the faulty metal-oxide-semiconductor that then turns off that charges disconnects charging, flow out electric current by electric resistance array through metal-oxide-semiconductor and power to the load;Described electricity Stream detects irreversible short-circuit protection circuit (69) and provides detection voltage by electric resistance array to MCU, and MCU computing becomes corresponding electric current Value controls charging, overcharge, electric discharge, overdischarge, short circuit and controls the work of corresponding circuit, if load short circuits, blows Resistor Array Projector Row, protection battery component (5).

6. according to the startup storage battery described in any one of claim 1 to 5, it is characterised in that: described battery component (5) is by N number of lithium Ion battery monomer series-parallel system combines.

Startup storage battery the most according to claim 6, it is characterised in that: the voltage that described battery component (5) provides be 12V or 24V or 36V or 48V or 60V or 72V.

8. according to the startup storage battery described in any one of claim 1 to 5, it is characterised in that: described upper cover (1) and lower cover (2) it Between be provided with O-ring seals.