Battery pack activation control device, power supply system and engineering mechanical equipment

Abstract

The utility model discloses a battery pack activation control device, a power supply system and engineering mechanical equipment. The control device comprises a battery management system, a charger, a time delay relay and a control module, the battery management system is connected with the battery pack and the charger; the control module is connected with a coil and a contact of the time-delay relay, and the contact of the time-delay relay is further connected with the battery management system. According to the utility model, on the basis of the existing charging activation circuit of the battery pack, the control module and the time-delay relay are added to indirectly activate the discharging function of the battery pack, so that the hardware circuit design is reduced, and the problem that the activation discharging of an external key switch is greatly influenced by a hard wire is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery control technical field especially relates to a kind of battery pack activation control device, power supply system and engineering machinery equipment. BACKGROUND

[0002] The activation discharge mode of lithium battery on engineering machinery equipment generally adopts external key switch direct activation discharge mode or lithium battery body switch direct activation discharge mode.The external key switch direct activation discharge mode is greatly influenced by hardware circuit,when line fault occurs,possibly lead to lithium battery cannot normally discharge;Lithium battery body switch direct activation discharge mode has the drawback of cumbersome power-on operation. SUMMARY

[0003] The utility model aims at providing a kind of battery pack activation control device, power supply system and engineering machinery equipment, to solve at least one of the problems that external key switch activation discharge is greatly influenced by hard line and the problem that body switch activation discharge has cumbersome power-on operation.

[0004] The utility model is through the following technical scheme to solve the above-mentioned technical problem: a kind of battery pack activation control device, including battery management system, charger, time delay relay and control module;The battery management system is connected with battery pack, charger;The control module is connected with the coil and contact of the time delay relay, and the contact of the time delay relay is also connected with the battery management system.

[0005] When battery pack needs to be activated to discharge load, the coil of time delay relay is powered by control module, the contact of time delay relay is closed first and then disconnected, so that battery management system is powered on and then disconnected, and battery pack is activated by the short-time power-on of battery management system, so that battery pack discharges load.

[0006] Further, the control module includes control switch and power supply;The first end of the control switch is connected with the power supply, and the second end of the control switch is connected with the coil and contact of the time delay relay.

[0007] Further, diode D1 is further provided between the contact of the time delay relay and the battery management system.

[0008] Further, diode D2 is further provided between the charger and the battery management system.

[0009] Further, the device further includes local switch, and the local switch is connected with the battery management system and external power supply.

[0010] Further, the battery pack is lithium battery pack.

[0011] Based on the same concept, the utility model still provides a power system, the power system includes the battery pack activation control device as described above.

[0012] Based on the same concept, the utility model still provides an engineering machinery equipment, the engineering machinery equipment includes the power system as described above.

[0013] Beneficial effects

[0014] Compared with prior art, the utility model has the advantages that:

[0015] The utility model is in the coil of time delay relay electricity, through the contact of time delay relay gives the battery management system short power, through the short power of battery management system to activate the battery pack, the contact of time delay relay short closing is opened again, makes the battery pack first activation and then discharges, the utility model is based on the existing charging activation circuit of battery pack, increases control module and time delay relay to indirectly realize the activation of battery pack discharge function, simple and effective, reduces the hardware circuit design, improves the problem that the external key switch activation discharge is influenced by hard line, avoids the problem that the local switch activation discharge mode power operation is complicated, realizes the discharge mode that has not entered the charging mode through time delay relay, and the discharge is more safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the utility model, the following will be needed to use the drawings in the embodiment description, obviously, the drawings in the following description are only one embodiment of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is the battery pack activation control device principle diagram in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The technical scheme in the utility model is clearly and completely described below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] The technical scheme of the present application will be described in detail below with specific examples. The following several specific examples can be combined, and the same or similar concepts or processes may not be described in some embodiments.

[0020] As Figure 1As shown, the battery pack activation control device provided by the embodiment of the utility model includes battery management system (namely BMS), charger, delay relay and control module; the battery management system is connected with the battery pack and the charger; the control module is connected with the coil KT of the delay relay and the normally closed contact KT-1, and the normally closed contact KT-1 of the delay relay is also connected with the battery management system.

[0021] When the discharge function of the battery pack needs to be activated, the coil KT of the delay relay is powered by the control module, and at the same time, a voltage level is applied to one end of the normally closed contact KT-1 of the delay relay, so that the normally closed contact KT-1 of the delay relay is closed first and then opened, and the battery management system is powered on and then powered off, so that the discharge function of the battery pack is activated by the short-time power-on of the battery management system, and the battery pack discharges the load; at the same time, the short-time power-on of the battery management system does not trigger the charging CAN communication alarm between the battery management system and the charger, that is, the charging mode is not entered. Based on the charging activation circuit existing in the battery pack, the control module and the delay relay are added, and the discharge function of the battery pack is indirectly activated by the control module and the delay relay, so that the hardware circuit design is reduced, and the problem that the external key switch activation discharge mode is greatly affected by the hard line is improved; at the same time, the utility model can realize the automatic control of the short-time power-on and power-off of the battery management system.

[0022] In the specific embodiment of the utility model, the control module includes a control switch S and a power supply VCC (for example, a 12V power supply); the first end of the control switch S is connected with the power supply VCC, and the second end of the control switch S is connected with the coil KT and the normally closed contact KT-1 of the delay relay. When the control switch S is closed, the power supply VCC supplies power to the coil KT of the delay relay, the coil KT of the delay relay is powered on, and the normally closed contact KT-1 of the delay relay is closed and then opened; when the normally closed contact KT-1 of the delay relay is closed, the power supply VCC powers on the battery management system through the control switch S and the normally closed contact KT-1 of the delay relay, and activates the discharge function of the battery pack; when the normally closed contact KT-1 of the delay relay is opened again, the connection between the power supply VCC and the battery management system is disconnected, and the short-time power-on does not trigger the charging CAN communication alarm between the battery pack and the charger.

[0023] In the specific embodiment of the utility model, a diode D1 is further arranged between the normally closed contact KT-1 of the delay relay and the battery management system; and a diode D2 is further arranged between the charger and the battery management system. The diode has a unidirectional conduction performance, that is, when a forward voltage is applied to the two poles of the diode, the diode is turned on; and when a reverse voltage is applied to the two poles of the diode, the diode is cut off. Through the diode D1 and the diode D2, the mutual interference between the control module and the charger is prevented.

[0024] In the specific embodiment of the utility model, the activation control device further includes a local switch SB, and the local switch SB is connected with the battery management system and the external power supply. The discharge function of the battery pack can be directly activated through the local switch SB, and the local switch SB directly activates the discharge mode is reserved.

[0025] In the specific embodiment of the utility model, the battery pack is a lithium battery pack.

[0026] The battery pack activation control logic of the utility model is independent of the logic control of the engineering machinery equipment, and the discharge is safer and more reliable. The independent activation control device is beneficial to fault elimination, facilitates technical problem analysis, reduces market maintenance and after-sales costs, and shortens the user's invalid standby maintenance time.

[0027] The above disclosed is only the specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or modifications within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A battery pack activation control device characterized by comprising: The control device comprises a battery management system, a charger, a time-delay relay and a control module; the battery management system is connected with a battery pack and the charger; the control module is connected with the coil and the contact of the time-delay relay, and the contact of the time-delay relay is also connected with the battery management system.

2. The battery pack activation control device according to claim 1, characterized by: The control module comprises a control switch and a power supply; the first end of the control switch is connected with the power supply, and the second end of the control switch is connected with the coil and the contact of the time-delay relay.

3. The battery pack activation control device according to claim 1, characterized by: A diode D1 is further arranged between the contact of the time-delay relay and the battery management system.

4. The battery pack activation control device according to claim 1, characterized by: A diode D2 is further arranged between the charger and the battery management system.

5. The battery pack activation control device according to claim 1, characterized by: The device further comprises a local switch, which is connected with the battery management system and an external power supply.

6. The battery pack activation control device according to any one of claims 1 to 5, characterized by: The battery pack is a lithium battery pack.

7. A power supply system characterized by comprising: The power supply system comprises the battery pack activation control device according to any one of claims 1-6.

8. An engineered machine device, characterized by: The engineering machinery device comprises the power supply system according to claim 7.

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