Direct-current battery discharging device

Abstract

The utility model relates to the technical field of automobile battery management, in particular to a direct-current battery discharging device which comprises a shell, a power inverter with a power line is fixedly arranged in the shell, the power inverter is electrically connected with a control circuit board, the control circuit board is respectively and electrically connected with a voltmeter and a change-over switch, and the voltmeter and the change-over switch are electrically connected with the shell. The change-over switch is electrically connected with a switch a, a switch b and a switch c, the switch a is electrically connected with a first heating wire and a second heating wire, the switch b is electrically connected with a third heating wire and a fourth heating wire, and the switch c is electrically connected with a fifth heating wire and a sixth heating wire. And the change-over switch is also electrically connected with a positive electrode clamping jaw of a discharged power source and a negative electrode clamping jaw of the discharged power source. The direct-current battery discharge device adopts multi-specification discharge, can meet discharge requirements of batteries with different voltage levels, and can realize semi-automatic operation, settable discharge voltage, controllable device temperature, intelligence and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile battery management, in particular to a direct current battery discharge device. Background Art

[0002] In order to make the voltage of the DC battery module / cell group meet the transportation safety requirements or be consistent with the voltage of other battery modules / cell groups, the DC battery module / cell group needs to release the power in the process to reduce the voltage of the DC battery module / cell group. The existing discharge equipment is relatively rigid, with a single gear specification, and is not smart enough. There is no circuit protection setting, which has certain safety hazards and cannot meet the existing work needs and requirements. Summary of the invention

[0003] The main purpose of the utility model is to overcome the shortcomings of the prior art and provide a DC battery discharge device. The DC battery discharge device adopts multi-specification discharge to meet the discharge requirements of batteries with different voltage levels, can achieve semi-automatic operation, the discharge voltage can be set, the device temperature can be controlled, and it is intelligent and efficient.

[0004] The technical solution adopted by the utility model to achieve its technical purpose is: a DC battery discharge device, including a shell, a power inverter with a power cord is fixedly arranged inside the shell, the power inverter is electrically connected to a control circuit board, the control circuit board is electrically connected to a voltmeter and a switch, the switch is provided with a plurality of switching gears, which are respectively used to connect different lines, and also includes a disconnection gear.

[0005] The switching switch is electrically connected to switch a, switch b and switch c respectively, the switch a is electrically connected to the first heating wire and the second heating wire respectively, the switch b is electrically connected to the third heating wire and the fourth heating wire respectively, and the switch c is electrically connected to the fifth heating wire and the sixth heating wire respectively; switch a, switch b and switch c are each provided with two gears for switching use, the switch a, switch b and switch c are electrically connected in parallel to the positive electrode circuit of the switching switch, and the negative electrode returns to the negative electrode of the switching switch,

[0006] The switching switch is also electrically connected to a positive electrode clamp of the discharged power source and a negative electrode clamp of the discharged power source;

[0007] The positive and negative electrodes of the voltmeter are electrically connected to the positive electrode clamping jaw and the negative electrode clamping jaw of the discharged power source respectively;

[0008] The positive electrode clamping jaw and the negative electrode clamping jaw of the discharged power source are used to clamp and electrically connect the discharged power source, and the voltmeter is used to monitor and display the voltage of the discharged power source in real time.

[0009] Preferably, a fuse a is electrically connected in the circuit between the switching switch and switch a;

[0010] A fuse b is electrically connected in the circuit between the switching switch and switch b;

[0011] A fuse c is electrically connected in the circuit between the switching switch and the switch c.

[0012] Preferably, a wiring socket is electrically connected in the circuit between the positive electrode clamp of the discharged power source and the positive electrode of the switching switch;

[0013] A contactor is electrically connected in the circuit between the negative electrode clamp of the discharged power source and the negative electrode of the switching switch, and an emergency stop switch is electrically connected in the circuit between the contactor and the control circuit board. The contactor is used to cooperate with the emergency stop switch to realize rapid switching of the main circuit.

[0014] Preferably, a temperature sensor and a fan are fixedly arranged inside the shell, and both the temperature sensor and the fan are connected through the control circuit board. The internal temperature of the shell is monitored by the temperature sensor. Once the set value is exceeded, the control circuit board controls the fan to dissipate heat.

[0015] Preferably, an operation panel is embedded in the top of the shell, and the operation panel is control-connected to the control circuit board. Since the control circuit board is electrically connected to the voltmeter and the switching switch respectively, the voltmeter can be monitored and operated in real time through the operation panel, and the discharge degree of the discharged power source, that is, the voltage drops to a certain level, can be set through the operation panel.

[0016] Preferably, the top of the shell is also inlaid with indicator lights corresponding to the positions of the first heating wire, the second heating wire, the third heating wire, the fourth heating wire, the fifth heating wire and the sixth heating wire, and the indicator lights can be used to determine which circuit the heating wire is working in.

[0017] Preferably, the side walls around the shell are provided with a plurality of evenly distributed heat dissipation holes, and the heat dissipation holes are used to cooperate with a fan to dissipate heat.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The DC battery discharge device is provided with multiple gears. Through manual gear adjustment and multi-specification discharge, it can meet the discharge requirements of batteries with different voltage levels. It has high cost performance, is equipped with emergency stop, and is safe and reliable.

[0020] The DC battery discharge device can achieve automatic disconnection through manual gear adjustment, can realize semi-automatic operation, the discharge voltage can be set, the device temperature can be controlled, and is intelligent and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of a DC battery discharge device viewed from above.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a DC battery discharge device.

[0023] in:

[0024] 1-housing; 101-heating hole; 2-operation panel; 3-voltmeter; 4-emergency stop switch; 5-switching switch; 6-switch a; 7-first heating wire; 8-second heating wire; 9-switch b; 10-third heating wire; 11-fourth heating wire; 12-switch c; 13-fifth heating wire; 14-sixth heating wire; 15-power line; 16-indicator light; 17-fan; 18-control circuit board; 19-power inverter; 20-contactor; 21-terminal holder; 22-fuse a; 23-fuse b; 24-fuse c; 25-temperature sensor; 26-positive electrode clamp of the discharged power source; 27-negative electrode clamp of the discharged power source. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] In the description of the present utility model, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0029] like Figure 1-2 As shown, a DC battery discharge device includes a shell 1, a power inverter 19 with a power cord 15 is fixedly arranged inside the shell 1, the power inverter 19 is electrically connected to a control circuit board 18, and the control circuit board 18 is electrically connected to a voltmeter 3 and a switching switch 5 respectively, and the switching switch 5 is provided with a plurality of switching gears, which are respectively used to connect different lines, and also includes a disconnection gear.

[0030] The switching switch 5 is electrically connected to switch a6, switch b9 and switch c12 respectively; the circuit between the switching switch 5 and switch a6 is electrically connected to fuse a22; the circuit between the switching switch 5 and switch b9 is electrically connected to fuse b23; the circuit between the switching switch 5 and switch c12 is electrically connected to fuse c24.

[0031] The switch a6 is electrically connected to the first heating wire 7 and the second heating wire 8, respectively; the switch b9 is electrically connected to the third heating wire 10 and the fourth heating wire 11, respectively; the switch c12 is electrically connected to the fifth heating wire 13 and the sixth heating wire 14, respectively; the switch a6, the switch b9 and the switch c12 are all provided with two gears for switching use, the switch a6, the switch b9 and the switch c12 are all electrically connected in parallel to the positive electrode circuit of the switching switch 5, and the negative electrode returns to the negative electrode of the switching switch 5,

[0032] The switching switch 5 is also electrically connected to the positive electrode clamp 26 and the negative electrode clamp 27 of the discharged power source; the positive and negative poles of the voltmeter 3 are electrically connected to the positive electrode clamp 26 and the negative electrode clamp 27 of the discharged power source respectively; the positive electrode clamp 26 and the negative electrode clamp 27 of the discharged power source are used to clamp the electrically connected discharged power source, and the voltmeter 3 is used to monitor the voltage of the discharged power source in real time and display it.

[0033] A terminal block 21 is electrically connected in the circuit between the positive electrode clamp 26 of the discharged power source and the positive electrode of the switching switch 5; a contactor 20 is electrically connected in the circuit between the negative electrode clamp 27 of the discharged power source and the negative electrode of the switching switch 5, and an emergency stop switch 4 is electrically connected in the circuit between the contactor 20 and the control circuit board 18. The contactor 20 is used to cooperate with the emergency stop switch 4 to realize rapid switching on and off of the main circuit.

[0034] A temperature sensor 25 and a fan 17 are fixedly arranged inside the housing 1. The temperature sensor 25 and the fan 17 are both controlled and connected by a control circuit board 18. A plurality of evenly distributed heat dissipation holes 101 are provided on the four side walls of the housing 1. The heat dissipation holes 101 are used to cooperate with the fan 17 to dissipate heat. The temperature inside the housing 1 is monitored by the temperature sensor 25. Once the set value is exceeded, the control circuit board 18 controls the fan 17 to dissipate heat.

[0035] Furthermore, an operation panel 2 is embedded on the top of the housing 1, and the operation panel 2 is connected to the control circuit board 18 for control. Since the control circuit board 18 is electrically connected to the voltmeter 3 and the switch 5, the voltmeter 3 can be monitored and operated in real time through the operation panel 2, and the discharge degree of the discharged power source, that is, the voltage drop to a certain level, can be set through the operation panel 2. At the same time, the value of the temperature sensor 25 can also be set on the operation panel 2 through the control circuit board 18, so that the fan 17 is turned on after reaching the set value of the temperature sensor 25.

[0036] Furthermore, the top of the shell 1 is also inlaid with indicator lights 16 corresponding to the positions of the first heating wire 7, the second heating wire 8, the third heating wire 10, the fourth heating wire 11, the fifth heating wire 13, and the sixth heating wire 14. The indicator lights 16 can be used to determine which circuit the heating wire is working in.

[0037] Specifically, the DC battery discharge device is powered by a 220V power cord 15, which is then fed to a control circuit board 18 through a power inverter 19. The positive and negative electrodes of the discharged power source are connected through a positive electrode clamp 26 and a negative electrode clamp 27 of the discharged power source. A voltmeter 3 can display the voltage of the discharged power source. The degree of discharge, that is, the voltage drop to a certain level, is set through an operation panel 2. According to the voltage level of the discharged power source, the switching switch 5 and switches a6, b9 and c12 are manually adjusted to corresponding positions. The operation panel 2 is provided with a "start" function. The control circuit board 18 controls the contactor 20 to close, and the discharged power source is discharged by heating the heating wire. The control circuit board 18 monitors the voltage of the discharged power source. When the set voltage is reached, the control circuit board 18 can disconnect the switching switch 5, and the device will stop working. In case of an emergency, the emergency stop switch 4 can be manually pressed to achieve a safety effect.

[0038] During the discharge process, the control circuit board 18 monitors the device temperature through the temperature sensor 25, and controls the electronic fan to operate when the temperature reaches the set temperature on the operation panel 2 to reduce the device temperature.

[0039] It should be pointed out that there are 6 heating wires of different specifications, resistance values ​​and powers inside the device, which are used for different discharged power requirements. The first heating wire 7 and the second heating wire 8 share a fuse a22, the third heating wire 10 and the fourth heating wire 11 share a fuse b23, the fifth heating wire 13 and the sixth heating wire 14 share a fuse c24, and the fuse specifications vary according to the current passing through the heating wires.

[0040] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structures, equivalent processes or equivalent functional transformations made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the scope of protection of the utility model patent.

Claims

1. A DC battery discharge device, comprising a housing (1), characterized in that: A power inverter (19) with a power cord (15) is fixedly arranged inside the housing (1), the power inverter (19) is electrically connected to a control circuit board (18), and the control circuit board (18) is electrically connected to a voltmeter (3) and a switch (5) respectively; The switching switch (5) is electrically connected to a switch a (6), a switch b (9) and a switch c (12), respectively; the switch a (6) is electrically connected to a first heating wire (7) and a second heating wire (8), respectively; the switch b (9) is electrically connected to a third heating wire (10) and a fourth heating wire (11), respectively; and the switch c (12) is electrically connected to a fifth heating wire (13) and a sixth heating wire (14); The switching switch (5) is also electrically connected to a positive electrode clamp (26) of a discharged power source and a negative electrode clamp (27) of a discharged power source; The positive and negative electrodes of the voltmeter (3) are electrically connected to the positive electrode clamp (26) and the negative electrode clamp (27) of the discharged power source, respectively.

2. A DC battery discharge device according to claim 1, characterized in that: A fuse a (22) is electrically connected in the circuit between the switching switch (5) and the switch a (6); A fuse b (23) is electrically connected in the circuit between the switching switch (5) and the switch b (9); A fuse c (24) is electrically connected in the circuit between the switching switch (5) and the switch c (12).

3. A DC battery discharge device according to claim 1, characterized in that: A wiring socket (21) is electrically connected in the circuit between the positive electrode clamp (26) of the discharged power source and the positive electrode of the switching switch (5); A contactor (20) is electrically connected in the circuit between the negative electrode clamp (27) of the discharged power source and the negative electrode of the switching switch (5), and an emergency stop switch (4) is electrically connected in the circuit between the contactor (20) and the control circuit board (18).

4. A DC battery discharge device according to claim 1, characterized in that: A temperature sensor (25) and a fan (17) are also fixedly arranged inside the housing (1), and the temperature sensor (25) and the fan (17) are both controlled and connected via the control circuit board (18).

5. A DC battery discharge device according to claim 1, characterized in that: An operating panel (2) is embedded on the top of the housing (1), and the operating panel (2) is control-connected to the control circuit board (18).

6. A DC battery discharge device according to claim 1, characterized in that: The top of the housing (1) is also inlaid with indicator lights (16) corresponding to the positions of the first heating wire (7), the second heating wire (8), the third heating wire (10), the fourth heating wire (11), the fifth heating wire (13), and the sixth heating wire (14).

7. A DC battery discharge device according to claim 1, characterized in that: The side walls of the housing (1) are provided with a plurality of evenly distributed heat dissipation holes (101).

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