Combined nickel-metal hydride battery pack

Abstract

The utility model discloses a combined type nickel-metal hydride battery pack which comprises a containing box and a plurality of expansion boxes, an anode flat cable and a cathode flat cable are arranged in the containing box, a first interface and a second interface are arranged on the outer side of the containing box, the anode flat cable and the cathode flat cable are electrically connected with the first interface and the second interface respectively, and a plurality of pairs of first magnets are arranged in the containing box. A plurality of batteries are placed in the containing box, a first fuse and a second fuse are detachably connected in the expansion box, a pair of second magnets are arranged on the expansion box, the expansion box is installed in the containing box, and the two ends of the first fuse make contact with positive electrode contacts and positive electrode flat cables of the batteries respectively. Two ends of the second fuse are respectively contacted with the cathode contact and the cathode flat cable of the battery, and the second magnet is adsorbed on the first magnet. According to the combined nickel-metal hydride battery pack provided by the utility model, the first fuse and the second fuse in the expansion box can be fused when the battery is overloaded and discharged, so that the battery is prevented from being damaged and even deflagrated due to continuous overload discharge.

Description

Technical Field

[0001] The utility model relates to the field of nickel-hydrogen battery packs, in particular to a combined nickel-hydrogen battery pack. Background Art

[0002] Nickel-metal hydride battery is a kind of storage battery with good performance. Nickel-metal hydride battery is divided into high-voltage nickel-metal hydride battery and low-voltage nickel-metal hydride battery. The positive active material of nickel-metal hydride battery is Ni(OH)2, and the negative active material is metal hydride, also known as hydrogen storage alloy (the electrode is called hydrogen storage electrode). The electrolyte is 6 mol / L potassium hydroxide solution.

[0003] A nickel-hydrogen battery pack includes multiple single nickel-hydrogen batteries and a protective shell. Multiple nickel-hydrogen batteries are connected in parallel to form a nickel-hydrogen battery group. After the multiple nickel-hydrogen battery groups are connected in parallel, they are placed in a protective shell. The protective shell provides protection for the nickel-hydrogen battery group.

[0004] However, after the above-mentioned nickel-hydrogen battery pack is installed on the device and runs for a long time, some nickel-hydrogen batteries in the nickel-hydrogen battery pack will age faster than other normally operating nickel-hydrogen batteries, causing the voltage of these aged nickel-hydrogen batteries to rise during discharge. When the nickel-hydrogen batteries are overloaded and discharged, they will be damaged or even explode and affect the nickel-hydrogen battery pack. Utility Model Content

[0005] The utility model aims to provide a combined nickel-hydrogen battery pack, which can melt the first fuse and the second fuse in the expansion box when the battery is overloaded and discharged, so as to avoid the battery being damaged or even exploded due to continuous overload discharge.

[0006] The technical solution adopted by a combined nickel-hydrogen battery pack disclosed in the utility model is:

[0007] It includes a storage box and multiple expansion boxes, the storage box is provided with a positive cable and a negative cable, the outer side of the storage box is provided with a first interface and a second interface, the positive cable and the negative cable are electrically connected to the first interface and the second interface respectively, the storage box is provided with multiple pairs of first magnets, multiple batteries are placed in the storage box, the expansion box is detachably connected with a first fuse and a second fuse, the expansion box is provided with a pair of second magnets, the expansion box is installed in the storage box, the two ends of the first fuse are respectively in contact with the positive contact and the positive cable of the battery, the two ends of the second fuse are respectively in contact with the negative contact and the negative cable of the battery, and the second magnet is adsorbed on the first magnet.

[0008] As a preferred embodiment, the expansion box is composed of a first shell and a second shell, the first shell and the second shell are symmetrical to each other, and a first positive electrode column, a second positive electrode column, a first negative electrode column and a second negative electrode column are provided between the first shell and the second shell, the first positive electrode column and the second positive electrode column are respectively close to the bottom and the top of the expansion box, the first negative electrode column and the second negative electrode column are respectively close to the bottom and the top of the expansion box, the two ends of the first fuse are respectively electrically connected to the first positive electrode column and the second positive electrode column, the two ends of the second fuse are respectively electrically connected to the first negative electrode column and the second negative electrode column, the first positive electrode column and the first negative electrode column are respectively electrically connected to the positive contact and the negative contact of the battery, and the second positive electrode column and the second negative electrode column are respectively electrically connected to the positive wiring and the negative wiring.

[0009] As a preferred solution, an LED driving circuit is provided between the first shell and the second shell, the first fuse and the second fuse are both electrically connected to the LED driving circuit, an indicator light is electrically connected to the LED driving circuit, the indicator light passes through the expansion box, a plurality of through holes are opened on the storage box, and the indicator light passes through the through holes.

[0010] As a preferred solution, the storage box is composed of a box body and a cover plate, the battery is placed in the box body, the bottom of the cover plate is covered on the top of the box body, and the expansion box is installed at the bottom of the cover plate.

[0011] As a preferred embodiment, a plurality of installation grooves arranged at intervals are provided at the bottom of the cover plate, the first magnet is located in the installation groove, the through hole is located in the installation groove, the positive electrode cable passes through the plurality of installation grooves in sequence, the negative electrode cable passes through the plurality of installation grooves in sequence, and the expansion box is inserted into the installation groove.

[0012] As a preferred solution, a plurality of slide grooves are provided on both sides of the inner wall of the box body, the slide grooves on both sides of the inner wall of the box body are symmetrical and parallel to each other, and both sides of the battery are slidably inserted into adjacent slide grooves.

[0013] As a preferred solution, a male connector is provided at one end of the box body, two limit blocks are provided at one end of the box body, and the two limit blocks are respectively close to two sides of the box body; a female connector is provided at the other end of the box body, and two limit grooves are provided at the other end of the box body, and the two limit grooves are respectively close to two sides of the box body.

[0014] As a preferred embodiment, a plug-in slot is provided on the male connector, two through slots are provided on the outer side of the male connector, the through slot is connected to the plug-in slot, a limit clamp is installed in the through slot, two pins are plugged into the male connector, the pins pass through the limit clamp, the limit clamp is in rotational contact with the pins, a spring is provided in the through slot, and two ends of the spring respectively touch the inner wall of the through slot and the limit clamp.

[0015] As a preferred solution, one end of the limiting clip extends out of the outside of the through slot, and one end of the limiting clip is provided with a buckle, and the buckle is located in the plug-in slot.

[0016] As a preferred solution, limiting holes are provided on both sides of the female connector.

[0017] The combined nickel-hydrogen battery pack disclosed in the utility model has the following beneficial effects:

[0018] The battery directs the current to the first interface and the second interface respectively through the first fuse and the second fuse in the expansion box. When the battery is overloaded and discharged due to aging, the current passing through the first fuse and the second fuse is too large, and the excessive resistance will generate high temperature to melt the first fuse and the second fuse, thereby disconnecting the battery from the first interface and the second interface respectively, stopping the battery from charging and discharging, and preventing the battery from being damaged or even exploding due to continuous overload discharge.

[0019] The expansion box is adsorbed on the first magnet in the storage box by the second magnet, so that the worker can remove the expansion box and replace the first fuse and the second fuse that have blown in the expansion box, so that the expansion box can be recycled and the battery that causes the first fuse and the second fuse to blow can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a combined nickel-hydrogen battery pack.

[0021] Figure 2 The utility model is a schematic diagram of the installation of a box body and a cover plate of a combined nickel-hydrogen battery pack.

[0022] Figure 3 The utility model is a cross-sectional view of a box body and a cover plate of a combined nickel-hydrogen battery pack.

[0023] Figure 4 It is a partial view of a combined nickel-hydrogen battery pack of the utility model.

[0024] Figure 5 The utility model is a schematic diagram of the installation of a male connector and a female connector of a combined nickel-hydrogen battery pack.

[0025] Figure 6 The utility model is a cross-sectional view of a box body and a cover plate of a combined nickel-hydrogen battery pack.

[0026] Figure 7 The utility model is a schematic diagram of the installation of an expansion box of a combined nickel-hydrogen battery pack. DETAILED DESCRIPTION

[0027] The present invention is further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0028] Please refer to Figure 1 and Figure 2 .

[0029] The utility model discloses a combined nickel-metal hydride battery pack, which is used to integrate a plurality of batteries 3 and comprises a storage box 1 and a plurality of expansion boxes 2.

[0030] Please refer to Figure 2 and Figure 3 .

[0031] The storage box 1 is composed of a box body 11 and a cover plate 12. An inspection port is provided on the top of the box body 11, which communicates with the interior of the box body 11. The battery 3 is placed in the box body 11 through the inspection port. A plurality of slots 111 arranged at intervals are provided on both sides of the inner wall of the box body 11. The slots 111 on both sides of the inner wall of the box body 11 are symmetrical and parallel to each other. An installation area is formed between two slots 111. The two sides of the battery 3 are slidably inserted into the adjacent slots 111. The battery 3 is located in the installation area. The slots 111 limit the battery 3 in the installation area, which is also convenient for replacing a damaged battery 3 with a new battery 3.

[0032] The bottom of the cover plate 12 is provided with a plurality of installation grooves 121 arranged at intervals, and the installation grooves 121 are located at the top of the installation area. A plurality of pairs of first magnets are provided in the storage box 1; in this embodiment, each pair of first magnets preferably has two first magnets, wherein the magnetic force N surface of one first magnet is fixedly connected to the bottom of the cover plate 12, and the magnetic force S surface of the other first magnet is fixedly connected to the bottom of the cover plate 12; each pair of first magnets is respectively located in each installation groove 121;

[0033] Furthermore, a plurality of through holes are provided on the storage box 1, the through holes pass through the cover plate 12, and the through holes are located in the mounting grooves 121; a positive electrode cable and a negative electrode cable are provided in the storage box 1, and the positive electrode cable and the negative electrode cable are fixedly connected to the bottom of the cover plate 12, the positive electrode cable passes through the plurality of mounting grooves 121 in sequence, and the negative electrode cable passes through the plurality of mounting grooves 121 in sequence; a first interface 122 and a second interface 123 are provided on the outside of the storage box 1, the first interface 122 and the second interface 123 are located on the top of the cover plate 12, the positive electrode cable passes through the cover plate 12 and is electrically connected to the first interface 122, and the negative electrode cable passes through the cover plate 12 and is electrically connected to the second interface 123; the external positive cable is electrically connected to the first interface 122, and the external negative cable is electrically connected to the second interface 123.

[0034] The bottom of the cover plate 12 is covered on the top of the box body 11 so that the cover plate 12 seals the box body 11 .

[0035] Please refer to Figure 3-Figure 5 .

[0036] A male connector 112 is provided at one end of the box body 11. Two limit blocks 114 are provided at one end of the box body 11. The two limit blocks 114 are respectively close to the two sides of the box body 11. A plug-in slot is provided on the male connector 112. Two through slots are provided on the outer side of the male connector 112. The two through slots are symmetrical to each other. The through slots are connected to the plug-in slots. A limit clip 1121 is installed in the through slot. The two limit clips 1121 are symmetrical to each other. Two latches 1123 are plugged on the male connector 112. The latches 1123 penetrate the limit clips 1121. The limiting clip 1121 is in rotational contact with the latch 1123, and the latch 1123 can allow the limiting clip 1121 to rotate a certain angle in the through slot; a spring 1122 is provided in the through slot, and the two ends of the spring 1122 respectively touch the inner wall of the through slot and the limiting clip 1121, and one end of the limiting clip 1121 extends out of the outside of the through slot, and a buckle is provided at one end of the limiting clip 1121, and the buckle is located in the plug-in slot. The limiting clip 1121 is pushed to rotate a certain angle in the through slot by the spring 1122, so that the buckle moves into the plug-in slot.

[0037] A female connector 113 is disposed at the other end of the box body 11 , and limiting holes 1131 are provided on both sides of the female connector; two limiting grooves 115 are disposed at the other end of the box body 11 , and the two limiting grooves 115 are respectively close to both sides of the box body 11 .

[0038] A plurality of boxes 11 are placed in the protective shell of the nickel-metal hydride battery pack 3, and the plurality of boxes 11 are connected end to end, so that the female connector 113 of one of the boxes 11 is slidably inserted into the male connector 112 of another adjacent box 11. When the female connector 113 is slidably inserted into the insertion slot of the male connector 112, the female connector 113 pushes the buckle to allow the limit clip 1121 to rotate a certain angle in the through slot and compress the spring 1122; after the female connector 113 is plugged into the male connector 112, the spring 1122 pushes the limit clip 1121 to rotate a certain angle in the through slot to allow the buckle to snap into the limit hole 1131, thereby fixing the female connector 113 on the male connector 112; the limit block 114 snaps into the adjacent limit slot 115, and the design of the limit block 114 snapping into the limit slot 115 plays a role in positioning the docking accuracy when the two boxes 11 are connected.

[0039] Please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7

[0040] The expansion box 2 is composed of a first shell 21 and a second shell 22, the first shell 21 and the second shell 22 are symmetrical to each other, and a first positive pole 221, a second positive pole 222, a first negative pole 223 and a second negative pole 224 are arranged between the first shell 21 and the second shell 22, the bottom of the first positive pole 221 and the bottom of the first negative pole 223 are both passed through the bottom of the expansion box 2, the top of the second positive pole 222 and the top of the second negative pole 224 are both passed through the top of the expansion box 2, the first positive pole 221 and the first negative pole 223 are respectively located on both sides of the expansion box 2, the second positive pole 222 is close to the first positive pole 221, and the second negative pole 224 is close to the first negative pole 223;

[0041] Further, the expansion box 2 is detachably connected with a first fuse 225 and a second fuse 226, and the first fuse 225 and the second fuse 226 are both located between the first shell 21 and the second shell 22; one end of the first fuse 225 is electrically connected to the top of the first positive pole 221, and the other end of the first fuse 225 is electrically connected to the bottom of the second positive pole 222, and the first positive pole 221 guides the current to the second positive pole 222 through the first fuse 225; one end of the second fuse 226 is electrically connected to the top of the first negative pole 223, and the other end of the second fuse 226 is electrically connected to the bottom of the second negative pole 224, and the first negative pole 223 guides the current to the second negative pole 224 through the second fuse 226;

[0042] Furthermore, an LED driving circuit is provided between the first shell 21 and the second shell 22, the middle of the first fuse 225 and the middle of the second fuse 226 are both electrically connected to the LED driving circuit, and an indicator light 227 is electrically connected to the LED driving circuit, and the indicator light 227 passes through the expansion box 2;

[0043] Furthermore, a pair of second magnets 228 are provided on the expansion box 2, and the second magnets 228 are located between the first shell 21 and the second shell 22. In this embodiment, each pair of second magnets 228 preferably has two second magnets 228, and the magnetic N side of one second magnet 228 passes through the top of the expansion box 2, and the magnetic S side of the other second magnet 228 passes through the top of the expansion box 2, and the two second magnets 228 are respectively close to the two sides of the expansion box 2.

[0044] Please refer to Figure 1-Figure 7

[0045] When installing:

[0046] The expansion box 2 is installed at the bottom of the cover plate 12, and the top of the expansion box 2 is inserted into the installation groove 121. The installation groove 121 not only limits the expansion box 2, but also positions the expansion box 2 above the battery 3 in the installation area; when the top of the expansion box 2 is inserted into the installation groove 121, the first magnet and the second magnet 228 use the principle of magnetic poles that like poles repel each other and opposite poles attract each other, so that the magnetic force N of one of the second magnets 228 absorbs the magnetic force S of one of the first magnets, and the magnetic force S surface of another second magnet 228 absorbs the magnetic force N surface of another second magnet 228, so that the expansion box 2 can be installed in the installation groove 121 in the correct direction, and the indicator light 227 is inserted into the through hole; the top of the second positive pole 222 is electrically connected to the positive pole wiring, and the top of the second negative pole 224 is electrically connected to the negative pole wiring;

[0047] After sliding multiple batteries 3 into each installation area of ​​the box body 11 respectively, the bottom cover of the cover plate 12 is set on the inspection port of the box body 11, the bottom of the first positive pole 221 is electrically connected to the positive contact of the battery 3, and the bottom of the first negative pole 223 is electrically connected to the negative contact of the battery 3; the battery 3 sequentially transmits the positive current to the first interface 122 through the first positive pole 221, the first fuse 225, the second positive pole 222 and the positive pole cable, and the battery 3 sequentially transmits the negative current to the second interface 123 through the first negative pole 223, the second fuse 226, the second negative pole 224 and the negative pole cable, and the first fuse 225 and the second fuse 226 also transmit the positive current and the negative current to the LED drive circuit, so that the LED drive circuit lights up the indicator light 227, and the indicator light 227 will also be lit when the battery 3 is discharged normally.

[0048] When battery 3 ages and overload discharge occurs:

[0049] The first fuse 225 can also ensure that the current of the first positive pole 221 cannot be directed to the second positive pole 222 by melting itself, and the second fuse 226 can also ensure that the current of the first negative pole 223 cannot be directed to the second negative pole 224 by melting itself; after the first fuse 225 and the second fuse 226 are melted, the LED drive circuit loses current and the indicator light 227 goes out. The worker can judge which battery 3 is damaged and needs to be replaced by observing the extinguished indicator light 227 on the cover plate 12.

[0050] Replace the aged battery 3 and replace the first fuse 225 and the second fuse 226:

[0051] The worker confirms the specific position of the aged battery 3 in the box body 11 by observing the extinguished indicator light 227 on the cover 12, opens the cover 12, takes out the aged battery 3 and replaces it with a new battery 3, and removes the expansion box 2 adjacent to the aged battery 3 from the cover 12, separates the first shell 21 and the second shell 22, takes out the blown first fuse 225 and the second fuse 226, replaces them with new first fuse 225 and second fuse 226, then merges the first shell 21 and the second shell 22, and installs the expansion box 2 into the installation groove 121, so that the expansion box 2 can be recycled; the bottom cover of the cover 12 is set on the inspection port of the box body 11, and the replacement of the old battery 3 and the replacement of the blown first fuse 225 and the second fuse 226 are completed.

[0052] The utility model provides a combined nickel-metal hydride battery pack, wherein the battery guides the current to the first interface and the second interface respectively through the first fuse and the second fuse in the expansion box, when the battery is overloaded and discharged due to aging, the current passing through the first fuse and the second fuse is too large, and the excessively high resistance will generate high temperature to melt the first fuse and the second fuse, thereby disconnecting the battery from the first interface and the second interface respectively, stopping the battery from charging and discharging, and preventing the battery from being damaged or even exploding due to continuous overload discharge.

[0053] The expansion box is adsorbed on the first magnet in the storage box by the second magnet, so that the worker can remove the expansion box and replace the first fuse and the second fuse that have blown in the expansion box, so that the expansion box can be recycled and the battery that causes the first fuse and the second fuse to blow can be replaced.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A combined nickel-metal hydride battery pack for integrating multiple batteries, characterized in that: Includes storage box and multiple expansion boxes; A positive electrode cable and a negative electrode cable are arranged in the storage box, a first interface and a second interface are arranged on the outside of the storage box, the positive electrode cable and the negative electrode cable are electrically connected to the first interface and the second interface respectively, a plurality of pairs of first magnets are arranged in the storage box, and a plurality of the batteries are placed in the storage box; The expansion box is detachably connected with a first fuse and a second fuse, and a pair of second magnets are provided on the expansion box. The expansion box is installed in a storage box, and the two ends of the first fuse are respectively in contact with the positive contact and the positive wiring of the battery, and the two ends of the second fuse are respectively in contact with the negative contact and the negative wiring of the battery, and the second magnet is adsorbed on the first magnet.

2. A combined nickel-metal hydride battery pack as claimed in claim 1, characterized in that: The expansion box is composed of a first shell and a second shell, the first shell and the second shell are symmetrical to each other, and a first positive pole, a second positive pole, a first negative pole and a second negative pole are provided between the first shell and the second shell, the first positive pole and the second positive pole are respectively close to the bottom and the top of the expansion box, the first negative pole and the second negative pole are respectively close to the bottom and the top of the expansion box, the two ends of the first fuse are respectively electrically connected to the first positive pole and the second positive pole, the two ends of the second fuse are respectively electrically connected to the first negative pole and the second negative pole, the first positive pole and the first negative pole are respectively electrically connected to the positive contact and the negative contact of the battery, and the second positive pole and the second negative pole are respectively electrically connected to the positive wiring and the negative wiring.

3. A combined nickel-metal hydride battery pack as claimed in claim 2, characterized in that: An LED driving circuit is provided between the first shell and the second shell, the first fuse and the second fuse are both electrically connected to the LED driving circuit, an indicator light is electrically connected to the LED driving circuit, the indicator light passes through the expansion box, a plurality of through holes are provided on the storage box, and the indicator light passes through the through holes.

4. A combined nickel-metal hydride battery pack as claimed in claim 3, characterized in that: The storage box is composed of a box body and a cover plate. The battery is placed in the box body. The bottom of the cover plate is covered on the top of the box body. The expansion box is installed on the bottom of the cover plate.

5. A combined nickel-metal hydride battery pack as claimed in claim 4, characterized in that: The bottom of the cover plate is provided with a plurality of installation grooves arranged at intervals, the first magnet is located in the installation groove, the through hole is located in the installation groove, the positive electrode cable passes through the plurality of installation grooves in sequence, the negative electrode cable passes through the plurality of installation grooves in sequence, and the expansion box is inserted into the installation groove.

6. A combined nickel-metal hydride battery pack as claimed in claim 5, characterized in that: A plurality of slide grooves are provided on both sides of the inner wall of the box. The slide grooves on both sides of the inner wall of the box are symmetrical and parallel to each other. Both sides of the battery are slidably inserted into adjacent slide grooves.

7. A combined nickel-metal hydride battery pack as claimed in claim 6, characterized in that: A male connector is provided at one end of the box body, two limit blocks are provided at one end of the box body, and the two limit blocks are respectively close to the two sides of the box body; a female connector is provided at the other end of the box body, and two limit grooves are provided at the other end of the box body, and the two limit grooves are respectively close to the two sides of the box body.

8. A combined nickel-metal hydride battery pack as claimed in claim 7, characterized in that: The male connector is provided with a plug-in slot, and two through slots are provided on the outer side of the male connector, the through slot is communicated with the plug-in slot, a limit clamp is installed in the through slot, two latches are plugged into the male connector, the latches pass through the limit clamps, the limit clamps are in rotational contact with the latches, a spring is provided in the through slot, and two ends of the spring respectively contact the inner wall of the through slot and the limit clamp.

9. A combined nickel-metal hydride battery pack as claimed in claim 8, characterized in that: One end of the limiting clip extends out of the outer side of the through slot, and one end of the limiting clip is provided with a buckle, and the buckle is located in the plug-in slot.

10. A combined nickel-metal hydride battery pack as claimed in claim 9, characterized in that: Limiting holes are provided on both sides of the female connector.

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