CN210074814U - Battery pack for riding type mower - Google Patents
Battery pack for riding type mower Download PDFInfo
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- CN210074814U CN210074814U CN201920957297.9U CN201920957297U CN210074814U CN 210074814 U CN210074814 U CN 210074814U CN 201920957297 U CN201920957297 U CN 201920957297U CN 210074814 U CN210074814 U CN 210074814U
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Abstract
The utility model discloses a battery package for riding formula lawn mower relates to the charging device field, has solved the battery package of parallelly connected constitution of battery by different voltages, the problem of the troublesome operation of charging, include: a charging trigger switch; the charging execution unit receives the charging trigger signal and outputs a charging execution signal; the charging one-way switch is arranged on each battery branch and controls the battery on the branch to be charged; the discharge trigger switch receives the human body action to output a discharge trigger signal; the discharge execution unit receives the discharge trigger signal and outputs a discharge execution signal; the discharging one-way switches are coupled to the branches where the batteries are located and control the batteries on the branches where the batteries are located to discharge; the utility model discloses a battery package for riding formula lawn mower has avoided the battery of high voltage can produce the condition of heavy current in the twinkling of an eye and damage the battery to the battery discharge of low-voltage, and easy operation.
Description
Technical Field
The utility model relates to a charging device field, in particular to a battery package for riding formula lawn mower.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode. During charging and discharging, Li + is inserted and extracted back and forth between two electrodes: during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge.
Lithium ion battery all is used for in the new forms of energy electric motor car with battery module (battery package), and power battery module is established ties by a plurality of monomer electric cores and connects in parallel the equipment and form, connects between the monomer electric core and consolidates, requires that the utmost point post contact resistance of connection piece and battery is little, anti-vibration, firm degree height.
For a battery pack formed by connecting a plurality of groups of batteries in parallel, when the voltages of two batteries are different, the battery with large voltage can discharge to the battery with small voltage, and the condition that the battery is damaged due to the generation of instantaneous large current exists, so that the mode usually adopted in the prior art is to select the batteries with the same voltage or the batteries with too large voltage difference to be connected in parallel; or the batteries with large voltage are discharged for a period of time and then connected in parallel. The former operation mode needs to select the matched battery packs to be connected in parallel, and the latter operation mode needs personnel to control the large-voltage batteries to be firstly discharged for a period of time and then connected in parallel, so that the operation is troublesome, and the improvement space is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery package for riding formula lawn mower has avoided the battery of high voltage can produce the condition of heavy current in the twinkling of an eye and damage the battery to the battery discharge of low-voltage, and easy operation.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a battery pack for a riding lawn mower comprising at least two batteries in parallel, further comprising:
the charging trigger switch receives the human body action to output a charging trigger signal;
the charging execution unit is coupled with the charging trigger switch to receive the charging trigger signal and output a charging execution signal;
the charging one-way switch is coupled to the branch where each battery is located, and the charging one-way switch is coupled to the charging execution unit to receive the charging execution signal so as to control the charging of the battery on the branch where the battery is located;
the discharge trigger switch receives the human body action to output a discharge trigger signal;
the discharge execution unit is coupled with the discharge trigger switch to receive a discharge trigger signal and output a discharge execution signal;
the discharging unidirectional switches are coupled to the branches where the batteries are located, and are coupled to the discharging execution unit to receive the discharging execution signal so as to control the batteries on the branches to discharge.
By adopting the technical scheme, the parallel batteries are that the anode is connected with the anode, the cathode is connected with the cathode, and the discharging one-way switch and the charging one-way switch are arranged, so that when the high-voltage batteries are discharged, the high-voltage batteries are prevented from discharging to the low-voltage batteries in parallel by utilizing the one-way conduction characteristic of the one-way switch, and the condition that the batteries with high voltage can discharge to the batteries with low voltage is avoided; meanwhile, compared with an operation mode that a person controls a battery with large voltage to discharge for a period of time and then to be connected in parallel, the operation is simple.
The utility model discloses further set up to: further comprising:
and the voltage transformation unit is used for reducing the voltage of the commercial power connected to the battery pack circuit.
Through adopting above-mentioned technical scheme, the setting of vary voltage unit is given the step-down in order to reach the voltage that accords with the battery package and charge to the commercial power of inserting in battery package circuit.
The utility model discloses further set up to: a battery protection plate for protecting the battery is coupled to a branch where each battery is located.
By adopting the technical scheme, the battery protection board is coupled on the branch where each battery is located, the battery on the branch is protected in the charging or discharging process, the problems that the current and the voltage of the battery are too high in the charging process, the battery is excessively discharged in the discharging process and the like are avoided, and the service life of the branch battery is prolonged.
The utility model discloses further set up to: the battery pack protection circuit also comprises a circuit breaker used for protecting the battery pack discharging branch circuit.
Through adopting above-mentioned technical scheme, the circuit breaker on the branch road of discharging, when the battery package branch road of discharging breaks down, the circuit breaker very first time cuts off the personal safety in order to protect battery package and user.
The utility model discloses further set up to: the charging one-way switch comprises a diode D1, the anode of the diode D1 is connected with the charging execution unit, and the cathode of the diode D1 is connected with the battery of the branch where the diode D1 is located.
By adopting the technical scheme, the diode D1 with the anode connected with the charging execution unit and the cathode connected with the battery of the branch where the battery is located ensures the unidirectional conduction of the branch where the battery is located.
The utility model discloses further set up to: the charging execution unit comprises a plurality of charging relays, and the number of the charging relays corresponds to the number of the batteries one to one.
By adopting the technical scheme, the charging execution unit adopts the charging relay to prevent dangers caused by directly controlling strong current or operating a high-voltage circuit by hands; and the on-off of the high-voltage strong current circuit can be controlled by the contact of the electromagnetic relay, so that the machine can be conveniently operated.
The utility model discloses further set up to: the discharging unidirectional switch comprises a diode D2 and a diode D3 which are connected in parallel, the anodes of the diode D2 and the diode D3 are both connected with the battery of the branch where the diode D2 and the diode D3 are located, and the cathodes of the diode D2 and the diode D3 are connected with the discharging execution unit.
By adopting the technical scheme, the diode D2 and the diode D3, of which the anodes are both connected with the battery of the branch in which the battery is located and the cathodes are connected with the discharge execution unit, ensure the unidirectional conduction and the reverse cut-off of the discharge branch in which the battery is located.
The utility model discloses further set up to: the discharging execution unit comprises a discharging relay, and cathodes of the diodes D2 and D3 are coupled to the discharging relay.
By adopting the technical scheme, the discharge execution unit adopts the discharge relay to prevent dangers caused by directly controlling strong current or operating a high-voltage circuit by hands; and the on-off of the high-voltage strong current circuit can be controlled by the contact of the electromagnetic relay, so that the machine can be conveniently operated.
To sum up, the utility model discloses following beneficial effect has: the parallel batteries are characterized in that the positive electrode is connected with the positive electrode, the negative electrode is connected with the negative electrode, and the discharging one-way switch and the charging one-way switch are arranged, so that when the high-voltage batteries are discharged, the one-way conduction characteristic of the one-way switch is utilized, the high-voltage batteries are prevented from flowing to the parallel low-voltage batteries, and the condition that the high-voltage batteries can discharge to the low-voltage batteries to generate instantaneous large current to damage the batteries is avoided; meanwhile, compared with an operation mode that a person controls a battery with large voltage to discharge for a period of time and then to be connected in parallel, the operation is simple.
Drawings
Fig. 1 is a first schematic circuit diagram of a battery pack for a riding mower according to the present invention;
fig. 2 is a schematic circuit diagram of a battery pack for a riding mower according to the present invention.
In the figure, 1, a battery; 2. a charging trigger switch; 3. a charging execution unit; 4. a charging one-way switch; 5. a discharge trigger switch; 6. a discharge execution unit; 7. a discharge unidirectional switch; 8. a voltage transformation unit; 9. a battery protection plate; 10. a circuit breaker; 11. an operation panel; 12. and a charge/discharge control board.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-2.
Referring to fig. 1, the present invention discloses a battery pack for a riding mower, which includes at least two batteries 1 connected in parallel, and in the embodiment, three batteries 1 connected in parallel are taken as an example for detailed description. The battery pack further comprises a charging trigger switch 2 for receiving the human body action to output a charging trigger signal, a charging execution unit 3 coupled to the charging trigger switch 2 for receiving the charging trigger signal and outputting a charging execution signal, a discharging trigger switch 5 for receiving the human body action to output a discharging trigger signal, and a discharging execution unit 6 coupled to the discharging trigger switch 5 for receiving the discharging trigger signal and outputting a discharging execution signal.
Each branch where the battery 1 is located is coupled with a charging one-way switch 4, and the charging one-way switch 4 is coupled with the charging execution unit 3 to receive a charging execution signal so as to control the charging of the battery 1 on the branch where the charging execution unit is located; each branch of the battery 1 is coupled with a discharging unidirectional switch 7, and each discharging unidirectional switch 7 is coupled with the discharging execution unit 6 to receive a discharging execution signal to control the battery 1 on the branch to discharge. The battery pack further comprises a voltage transformation unit 8 for reducing the voltage of the mains supply connected to the battery pack circuit.
The charging one-way switch 4 comprises a diode D1, and the charging execution unit 3 comprises a plurality of charging relays, wherein the number of the charging relays corresponds to the number of the batteries 1. The charging relay is provided with a first node, a second node, a third node, a fourth node and a fifth node, the first node is connected with the ground, and the second node is connected with the charging trigger switch 2; the number of the charging trigger switches 2 corresponds to the number of the charging relays one by one, namely each charging relay is connected with one charging trigger switch 2; the fourth node and the fifth node are respectively the contact point of the charging relay, and the fourth node is connected with the commercial power output end, namely the C + end, the third node comprises a trigger end and a connecting end, the connecting end of the third node is connected with the anode of the diode D1, and the cathode of the diode D1 is connected with the anode of the battery 1. By default, the trigger terminal of the third node is at the fifth node, and once the charging trigger switch 2 connected to the charging relay detects human body movement, the trigger terminal of the third node is at the fourth node, and a charging voltage flows from the anode of the diode D1 to the cathode of the diode D1, so that the battery 1 on the branch is charged.
The discharging one-way switch 7 comprises a diode D2 and a diode D3 which are connected in parallel, and the anodes of the diode D2 and the diode D3 are connected with the battery 1 of the branch where the diode D2 and the diode D3 are located; the cathodes of the diode D2 and the diode D3 are connected in parallel and then connected in the discharging branch, and the discharging unidirectional switches 7 connected on the branch where all the batteries 1 are located are connected in the discharging branch. The discharge execution unit 6 includes discharge relays, where the number of discharge relays is different from the number of charge relays, which correspond one-to-one to the number of batteries 1, and only one discharge relay is provided. The discharging relay is provided with a first node, a second node, a third node, a fourth node and a fifth node, the first node is connected with the ground, and the second node is connected with the discharging trigger switch 5; the fourth node and the fifth node are respectively contact points of a discharging relay, the fourth node is connected with a discharging branch circuit, the third node comprises a trigger end and a connecting end, and the connecting end of the third node is connected with the external charged equipment, namely a P + point in a graph. By default, the trigger terminal of the third node is at the fifth node, and once the discharge trigger switch 5 connected to the discharge relay detects human body motion, the trigger terminal of the third node is at the fourth node, and at this time, discharge voltage flows from the anode of the diode D2 and the anode of the diode D3 to the cathodes of the diode D2 and the diode D3, and the battery 1 on the branch is discharged. And when discharging, the voltage value of which battery 1 is the largest after voltage drop through the diode D2 or the diode D3 is the first to discharge.
The cathodes of the batteries 1 are connected to the common terminal C-/P-, and the terminal C + and the common terminal C-/P-are connected when the battery pack is charged; when the battery pack is discharged, the P + terminal and the C-/P-terminal are connected.
A battery protection board 9 for protecting the battery 1 is coupled to a branch of each battery 1, and the battery protection board 9 is connected between the positive electrode of the battery 1 and the negative electrode of the diode D1, the positive electrode of the diode D2, and the positive electrode of the diode D3. Lithium battery 1 is the requirement of limited degree in the charging and discharging process, take lithium iron phosphate battery 1 as an example: the charge can not exceed 3.9V and the discharge can not be lower than 2V. Otherwise, the battery 1 may be damaged due to overcharge or overdischarge, and the damage is sometimes unrecoverable, and usually, after the battery protection board 9 is added to the lithium battery 1, the voltage of the battery 1 is controlled within the voltage, so as to protect the lithium battery 1. The battery protection plate 9 is a common knowledge of those skilled in the art, and the composition of the internal circuit of the battery protection plate 9 is not described herein.
The battery pack also includes a circuit breaker 10 for protecting the battery pack discharge branch. The circuit breaker 10 is connected to the discharge branch. The battery pack further comprises a voltage transformation unit 8 for reducing the voltage of the mains supply connected to the battery pack circuit, wherein the mains supply directly connected is connected to a C + terminal after being reduced in voltage, the voltage transformation unit 8 is a transformer in the embodiment, and the N terminal and the L terminal of the transformer are respectively connected to the charging AC interface terminal.
Referring to fig. 2, the charge trigger switch 2 and the discharge trigger switch 5 in the present embodiment may include a charge/discharge control board 12 and an operation panel 11, and the operation panel 11 is provided with a start switch SW1 corresponding to the charge and discharge of the battery 1 and a charge/discharge emergency stop button SB 0. Wherein the starting switch SW1 is a push type switch, the starting switch SW1 is disconnected in default state, and the charge/discharge emergency stop button SB0 is a normally closed switch; the charge/discharge emergency stop button SB0 is turned from the closed state to the open state upon depression of the start switch SW1 to turn on the charge/discharge control board 12, and the power supply branch of the charge/discharge control board 12 is cut off upon depression of the charge/discharge emergency stop button SB 0. The operation panel 11 is further provided with a switch for turning on and off the charging channel in the charging/discharging control panel 12 and a switch for turning on and off the charging channel, thereby realizing charging and discharging of the battery 1.
The above embodiments are only used to describe the technical solutions of the present application in detail, but the above description of the embodiments is only used to help understanding the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art should also appreciate that other modifications and substitutions can be made without departing from the scope of the present disclosure.
Claims (8)
1. A battery pack for a riding lawn mower comprising at least two batteries (1) connected in parallel, characterized in that: further comprising:
the charging trigger switch (2) receives human body actions to output a charging trigger signal;
the charging execution unit (3) is coupled with the charging trigger switch (2) to receive the charging trigger signal and output a charging execution signal;
the charging unidirectional switch (4) is coupled to a branch where each battery (1) is located, and the charging unidirectional switch (4) is coupled to the charging execution unit (3) to receive a charging execution signal so as to control the charging of the battery (1) on the branch;
a discharge trigger switch (5) for receiving the human body action to output a discharge trigger signal;
the discharge execution unit (6) is coupled with the discharge trigger switch (5) to receive the discharge trigger signal and output a discharge execution signal;
the discharging unidirectional switches (7) are coupled to branches where the batteries (1) are located, and the discharging unidirectional switches (7) are coupled to the discharging execution unit (6) to receive discharging execution signals to control the batteries (1) on the branches to discharge.
2. The battery pack for a riding lawn mower as claimed in claim 1, wherein: further comprising:
and the voltage transformation unit (8) is used for reducing the voltage of the commercial power connected to the battery pack circuit.
3. The battery pack for a riding lawn mower as claimed in claim 1, wherein: further comprising: a battery protection plate (9) for protecting the battery (1) is coupled to a branch of each battery (1).
4. The battery pack for a riding lawn mower as claimed in claim 1, wherein: also included is a circuit breaker (10) for protecting the battery pack discharge branch.
5. The battery pack for a riding lawn mower as claimed in claim 1, wherein: the charging one-way switch (4) comprises a diode D1, the anode of the diode D1 is connected with the charging execution unit (3), and the cathode of the diode D1 is connected with the battery (1) of the branch where the diode D1 is located.
6. The battery pack for a riding lawn mower as claimed in claim 5, wherein: the charging execution unit (3) comprises a plurality of charging relays, and the number of the charging relays corresponds to the number of the batteries (1) one by one.
7. The battery pack for a riding lawn mower as claimed in claim 1, wherein: the discharging unidirectional switch (7) comprises a diode D2 and a diode D3 which are connected in parallel, the anodes of the diode D2 and the diode D3 are both connected with the battery (1) of the branch where the diode D2 and the diode D3 are located, and the cathodes of the diode D2 and the diode D3 are connected with the discharging execution unit (6).
8. The battery pack for a riding lawn mower as claimed in claim 7, wherein: the discharging execution unit (6) comprises a discharging relay, and cathodes of a plurality of diodes D2 and D3 are coupled to the discharging relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957297.9U CN210074814U (en) | 2019-06-24 | 2019-06-24 | Battery pack for riding type mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920957297.9U CN210074814U (en) | 2019-06-24 | 2019-06-24 | Battery pack for riding type mower |
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| Publication Number | Publication Date |
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| CN210074814U true CN210074814U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920957297.9U Active CN210074814U (en) | 2019-06-24 | 2019-06-24 | Battery pack for riding type mower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1014568S1 (en) | 2022-02-14 | 2024-02-13 | Techtronic Cordless Gp | Lawn mower |
| USD1015381S1 (en) | 2022-02-14 | 2024-02-20 | Techtronic Cordless Gp | Lawn mower |
-
2019
- 2019-06-24 CN CN201920957297.9U patent/CN210074814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1014568S1 (en) | 2022-02-14 | 2024-02-13 | Techtronic Cordless Gp | Lawn mower |
| USD1015381S1 (en) | 2022-02-14 | 2024-02-20 | Techtronic Cordless Gp | Lawn mower |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210430 Address after: 315000 No.1 Tianxu Road, Cixi Binhai Economic Development Zone, Cixi City, Ningbo City, Zhejiang Province Patentee after: Ningbo Ruilin Machinery Technology Co.,Ltd. Address before: 315000 No.88, Lane 666, Jinshan Road, Jiangbei District, Ningbo City, Zhejiang Province Patentee before: Ningbo NGP Industry Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 168, longsan Road, Cixi Binhai Economic Development Zone, Ningbo, Zhejiang 315338 Patentee after: Ningbo Ruilin Machinery Technology Co.,Ltd. Address before: 315000 No.1 Tianxu Road, Cixi Binhai Economic Development Zone, Cixi City, Ningbo City, Zhejiang Province Patentee before: Ningbo Ruilin Machinery Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |