Wire harness switching device and battery pack

Abstract

The utility model discloses a wire harness switching device and a battery pack. A wire harness switching device is used for being electrically connected with a battery module. A wire harness switching device comprises a connector, a positive switching element and a negative switching element. One end of the connector is used for being electrically connected with external electrical equipment. The positive electrode adapter element comprises a positive electrode male end and a positive electrode female end, the positive electrode male end is used for being electrically connected with the positive electrode of the battery module, the positive electrode female end is electrically connected with the other end of the connector, and the positive electrode male end and the positive electrode female end are detachably and electrically connected. The negative electrode switching element comprises a negative electrode male end and a negative electrode female end, the negative electrode male end is used for being electrically connected with the negative electrode of the battery module, the negative electrode female end is electrically connected with the other end of the connector, and the negative electrode male end and the negative electrode female end are detachably and electrically connected. The wiring harness switching device can greatly reduce the number of plugging times of the connector and improve the problems of poor contact and heating of the connector terminals, thereby prolonging the service life of the connector, improving the contact reliability of the connector and reducing the battery replacement cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery equipment, in particular to a wire harness adapter and a battery pack. Background Art

[0002] The wiring harness connection of the battery pack generally uses the total positive and negative connection between the connector and the battery module to achieve the connection between the battery module and the vehicle. When the battery pack needs to be replaced, the connector on the vehicle side needs to be unplugged and separated from the battery side connector. The battery side connector is taken out of the vehicle along with the battery pack, and then the vehicle side connector is plugged into the new battery side connector to complete the battery pack replacement.

[0003] However, in this method, the vehicle-side connector is constantly plugged in and unplugged. As the number of plugging and unplugging times increases, the plating of the vehicle-side connector terminal will be damaged and the contact impedance will increase. After battery replacement, it may cause contact and heating problems between the vehicle-side connector and the battery-side connector terminal. The discharge and charging risks of the battery pack will increase, and the service life of the vehicle-side connector will also be greatly reduced. Utility Model Content

[0004] The main purpose of the utility model is to provide a wiring harness adapter and a battery pack, which aims to solve the technical problem that the vehicle-side connector is constantly plugged in and out, resulting in poor contact and heating between the vehicle-side connector and the battery-side connector terminals, and also greatly reducing the service life of the vehicle-side connector.

[0005] In order to achieve the above-mentioned purpose of the utility model, the first aspect of the utility model provides a wiring harness adapter.

[0006] A wiring harness adapter, used for electrically connecting to a battery module, comprising:

[0007] A connector, one end of which is used for electrical connection with an external electrical device;

[0008] A positive electrode adapter element, the positive electrode adapter element comprising a positive electrode male end and a positive electrode female end, the positive electrode male end is used to be electrically connected to the positive electrode of the battery module, the positive electrode female end is electrically connected to the other end of the connector, and the positive electrode male end and the positive electrode female end are detachably electrically connected; and

[0009] A negative electrode adapter element, the negative electrode adapter element includes a negative electrode male terminal and a negative electrode female terminal, the negative electrode male terminal is used to be electrically connected to the negative electrode of the battery module, the negative electrode female terminal is electrically connected to the other end of the connector, and the negative electrode male terminal and the negative electrode female terminal are detachably electrically connected.

[0010] In one embodiment, the positive electrode male end includes a first insulating shell, and a first clamping portion is provided on a side of the first insulating shell facing the positive electrode female end;

[0011] The positive electrode male terminal includes a second insulating housing. On a side of the second insulating housing facing the first insulating housing, a second clamping portion adapted to the first clamping portion is provided, and the first clamping portion is clamped to the second clamping portion.

[0012] In one embodiment, the first clamping portion is a clamping block, the second clamping portion is a clamping groove, and the clamping block is clamped in the clamping groove.

[0013] In one embodiment, the positive electrode male terminal further includes a first male terminal. A first accommodating cavity is provided in the first insulating housing, and the first male terminal is arranged in the first accommodating cavity;

[0014] The positive electrode female terminal further includes a first female terminal. A second accommodating cavity is provided in the second insulating housing, and the first female terminal is arranged in the second accommodating cavity. When the first clamping portion is clamped to the second clamping portion, the first male terminal is electrically connected to the first female terminal.

[0015] In one embodiment, the wire harness adapter further includes an overcurrent protector. The overcurrent protector is arranged in the second accommodating cavity of the second insulating housing. The overcurrent protector is electrically connected to the first female terminal and the connector respectively. When the current of the overcurrent protector is greater than a threshold value, the overcurrent protector can disconnect the circuit between the first female terminal and the connector.

[0016] In one embodiment, the overcurrent protector includes a fuse, a first wire and a second wire. The fuse is arranged in the second accommodating cavity, and the fuse is electrically connected to the first wire and the second wire respectively. One end of the first wire away from the fuse is electrically connected to the connector, and one end of the second wire away from the fuse is electrically connected to the first female terminal. When the current of the fuse is greater than the threshold value, the heat generated by the fuse can melt the fuse so that the first wire and the second wire are disconnected.

[0017] In one embodiment, the second insulating housing includes a first cylinder body and a second cylinder body. The first cylinder body is connected to the second cylinder body, and the interior of the first cylinder body and the interior of the second cylinder body form the second accommodating cavity. The diameter of the first cylinder body is larger than that of the second cylinder body. The second clamping portion is arranged on the second cylinder body. The second cylinder body can extend into the first accommodating cavity, and the inner side wall of the second accommodating cavity sleeves the outer side wall of the second cylinder body.

[0018] In one embodiment, the first insulating housing is of a cylinder structure, and the outer diameter of the first insulating housing is adapted to the outer diameter of the first cylinder body.

[0019] In one embodiment, the negative electrode male terminal includes a third insulating shell, and a third clamping portion is provided on a side of the third insulating shell facing the negative electrode female terminal;

[0020] The negative electrode female terminal comprises a fourth insulating shell, a fourth clamping portion adapted to the third clamping portion is provided on a side of the fourth insulating shell facing the third insulating shell, and the third clamping portion is clamped to the fourth clamping portion; or

[0021] The negative electrode male end further includes a second male terminal, a third accommodating cavity is provided in the third insulating housing, and the second male terminal is provided in the third accommodating cavity;

[0022] The negative female terminal also includes a second female terminal. A third accommodating cavity is provided in the fourth insulating shell. The second female terminal is provided in the fourth accommodating cavity. When the third clamping portion is clamped to the fourth clamping portion, the second male terminal is electrically connected to the second female terminal.

[0023] A second aspect of the utility model provides a battery pack, comprising a battery module and the above-mentioned wiring harness adapter, wherein the wiring harness adapter is electrically connected to the battery module.

[0024] Beneficial effects:

[0025] The utility model provides a wiring harness adapter device, when an external electrical device needs to replace the battery, separates the positive male terminal and the positive female terminal in the positive adapter element. Separates the negative male terminal and the negative female terminal in the negative adapter element, and then removes the entire connector, the positive female terminal, and the negative female terminal from the battery pack. The positive male terminal of the new battery module is electrically connected to the positive female terminal, and the negative male terminal of the new battery module is electrically connected to the negative female terminal, thereby completing the electrical connection between the battery module and the external electrical device. In this process, there is no need to disassemble the connector to replace the battery, which can greatly reduce the number of times the connector is plugged in and out, reduce the damage to the terminal plating due to frequent plugging and unplugging, improve the poor contact and heating problems of the connector terminals, thereby increasing the life of the connector, and improving the contact reliability of the connector, reducing the cost of battery replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a battery pack in one embodiment of the utility model.

[0027] Figure 2 It is a structural schematic diagram of a battery pack in one embodiment of the utility model.

[0028] Figure 3 It is a structural schematic diagram of a battery pack in one embodiment of the utility model.

[0029] Figure 4 It is a structural schematic diagram of a positive electrode switching element in one embodiment of the utility model.

[0030] Figure 5 It is an exploded view of the positive transfer element in an embodiment of the present utility model.

[0031] Figure 6 It is another exploded view of the positive transfer element in an embodiment of the present utility model.

[0032] Figure 7 It is a schematic structural diagram of the positive male end in an embodiment of the present utility model.

[0033] Wherein:

[0034] 1. Battery pack;

[0035] 10. Battery module;

[0036] 20. Wiring harness transfer device;

[0037] 200. Connector; 300. Positive transfer element; 310. Positive male end; 311. First insulating housing; 3111. First accommodating cavity; 312. First clamping portion; 313. First male terminal; 320. Positive female end; 321. Second insulating housing; 3211. Second accommodating cavity; 322. Second clamping portion; 323. First female terminal; 324. First cylinder; 325. Second cylinder;

[0038] 400. Negative transfer element;

[0039] 500. Overcurrent protector; 510. Fuse; 511. First wire; 512. Second wire.

[0040] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0041] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0045] As Figures 1 to 3 shown, in some embodiments, a battery pack 1 includes a battery module 10 and a wiring harness adapter device 20, and the wiring harness adapter device 20 is electrically connected to the battery module 10.

[0046] As Figure 4As shown, in some embodiments, a wire harness adapter device 20 is used for electrically connecting to a battery module 10. A wire harness adapter device 20 includes a connector 200, a positive terminal adapter element 300, and a negative terminal adapter element 400. One end of the connector 200 is used for electrically connecting to an external electrical device. The positive terminal adapter element 300 includes a male positive terminal 310 and a female positive terminal 320. The male positive terminal 310 is used for electrically connecting to the positive electrode of the battery module 10. The female positive terminal 320 is electrically connected to the other end of the connector 200, and the male positive terminal 310 and the female positive terminal 320 are detachably electrically connected. The negative terminal adapter element 400 includes a male negative terminal and a female negative terminal. The male negative terminal is used for electrically connecting to the negative electrode of the battery module 10. The female negative terminal is electrically connected to the other end of the connector 200, and the male negative terminal and the female negative terminal are detachably electrically connected. Specifically, the wire harness adapter device 20 can be used for high-voltage circuits.

[0047] It should be noted that when the external electrical device needs to replace the battery, the male positive terminal 310 and the female positive terminal 320 in the positive terminal adapter element 300 are separated. The male negative terminal and the female negative terminal in the negative terminal adapter element 400 are separated, and then the entire connector 200, the female positive terminal 320, and the female negative terminal are taken out from the battery pack 1. The male positive terminal 310 of the new battery module 10 is electrically connected to the female positive terminal 320, and the male negative terminal of the new battery module 10 is electrically connected to the female negative terminal, thereby completing the electrical connection between the battery module 10 and the external electrical device. In this process, there is no need to disassemble the connector 200 for battery replacement, which can greatly reduce the number of insertions and removals of the connector 200, reduce the damage to the terminal plating caused by frequent insertions and removals, improve the problems of poor contact and overheating of the connector 200 terminals, thereby increasing the service life of the connector 200, improving the contact reliability of the connector 200, and reducing the battery replacement cost.

[0048] As Figure 6 and Figure 7 shown, in some embodiments, the male positive terminal 310 includes a first insulating housing 311. A first clamping portion 312 is provided on one side of the first insulating housing 311 facing the female positive terminal 320. The female positive terminal 320 includes a second insulating housing 321. A second clamping portion 322 adapted to the first clamping portion 312 is provided on one side of the second insulating housing 321 facing the first insulating housing 311. The first clamping portion 312 is clamped to the second clamping portion 322.

[0049] It should be noted that through the clamping of the first clamping portion 312 and the second clamping portion 322, the detachable connection between the male positive terminal 310 and the female positive terminal 320 is realized, ensuring that the current can be smoothly transmitted in the positive electrode circuit. The clamping structure can firmly connect the male positive terminal 310 and the female positive terminal 320 together, prevent loosening or poor contact during use, and ensure the stability of the circuit.

[0050] Specifically, a plurality of first clamping portions 312 may be provided. The plurality of first clamping portions 312 are spaced along the outer periphery of the first insulating housing 311. A plurality of second clamping portions 322 may be provided. The plurality of second clamping portions 322 are spaced along the outer periphery of the second insulating housing 321. The plurality of first clamping portions 312 and the plurality of second clamping portions 322 are provided in one-to-one correspondence.

[0051] More specifically, two first clamping portions 312 may be provided. Two second clamping portions 322 may be provided.

[0052] Specifically, the first clamping portion 312 is a card slot, and the second clamping portion 322 is a card block. The card block is clamped in the card slot.

[0053] As Figure 5 and Figure 7 shown, in some embodiments, the male positive terminal 310 further includes a first male terminal 313. A first accommodation cavity 3111 is provided in the first insulating housing 311. The first male terminal 313 is disposed in the first accommodation cavity 3111. The female positive terminal 320 further includes a first female terminal 323. A second accommodation cavity 3211 is provided in the second insulating housing 321. The first female terminal 323 is disposed in the second accommodation cavity 3211. When the first clamping portion 312 is clamped to the second clamping portion 322, the first male terminal 313 is electrically connected to the first female terminal 323.

[0054] It should be noted that both the male terminal and the female terminal are conductors. When the first clamping portion 312 is clamped to the second clamping portion 322, that is, when the male end and the female end are connected together, the male terminal contacts the female terminal, and the male terminal is electrically connected to the female terminal to complete the transmission of electrical signals.

[0055] As Figure 6 shown, in some embodiments, the second insulating housing 321 includes a first cylinder 324 and a second cylinder 325. The first cylinder 324 is connected to the second cylinder 325, and the interior of the first cylinder 324 and the interior of the second cylinder 325 form the second accommodation cavity 3211. The diameter of the first cylinder 324 is larger than the diameter of the second cylinder 325. The second clamping portion 322 is provided on the second cylinder 325. The second cylinder 325 can extend into the first accommodation cavity 3111, and the inner side wall of the second accommodation cavity 3211 is sleeved on the outer side wall of the second cylinder 325.

[0056] It should be noted that by inserting the second cylinder body 325 into the first accommodating cavity 3111 and the sleeved cooperation between the inner side wall and the outer side wall, the contact area between the second cylinder body 325 and the inner side wall of the first accommodating cavity 3111 is increased, and the connection stability between the first insulating housing 311 and the second insulating housing 321 is improved. This sleeved structure can improve the sealing performance of the first accommodating cavity 3111 and the second accommodating cavity 3211, preventing external dust, moisture, etc. from entering the first accommodating cavity 3111 and the second accommodating cavity 3211 and affecting the electrical connection effect between the first male terminal 313 and the first female terminal 323.

[0057] In some embodiments, the first insulating housing 311 is of a cylindrical structure. The outer diameter of the first insulating housing 311 is adapted to the outer diameter of the first cylinder body 324 to improve the sealing performance of the connection part between the first insulating housing 311 and the first cylinder body 324 and reduce the possibility of dust, moisture, etc. entering the first insulating housing 311 and the first cylinder body 324.

[0058] In some embodiments, the negative male terminal includes a third insulating housing. A third clamping portion is provided on one side of the third insulating housing facing the negative female terminal. The negative female terminal includes a fourth insulating housing, and a fourth clamping portion adapted to the third clamping portion is provided on one side of the fourth insulating housing facing the third insulating housing, and the third clamping portion is clamped to the fourth clamping portion.

[0059] Specifically, the negative male terminal further includes a second male terminal. A third accommodating cavity is provided in the third insulating housing, and the second male terminal is arranged in the third accommodating cavity. The negative female terminal further includes a second female terminal. A third accommodating cavity is provided in the fourth insulating housing, and the second female terminal is arranged in the fourth accommodating cavity. When the third clamping portion is clamped to the fourth clamping portion, the second male terminal is electrically connected to the second female terminal.

[0060] It should be noted that the structures of the positive transfer element 300 and the negative transfer element 400 are the same. The difference is that the positive transfer element 300 is connected to the positive wire harness. The negative transfer element 400 is connected to the negative wire harness. Therefore, the structures of the positive male terminal 310 and the negative male terminal are the same. The structures of the positive female terminal 320 and the negative female terminal are the same. The detailed structures of the negative male terminal and the negative female terminal will not be elaborated here.

[0061] As Figure 5 shown, in some embodiments, the wire harness transfer device 20 further includes an overcurrent protector 500. The overcurrent protector 500 is arranged in the second accommodating cavity 3211 of the second insulating housing 321, and the overcurrent protector 500 is electrically connected to the first female terminal 323 and the connector 200 respectively. When the current of the overcurrent protector 500 is greater than the threshold value, the overcurrent protector 500 can disconnect the circuit between the first female terminal 323 and the connector 200.

[0062] It should be noted that when a short circuit occurs in the circuit or a large current passes through, and the value of the current is greater than the set threshold, the overcurrent protector 500 will automatically trigger the protection mechanism to disconnect the circuit between the first mother terminal 323 and the connector 200, thereby preventing the passage of excessive current and protecting the battery module 10 or other components from damage.

[0063] As Figure 6 shown, specifically, the overcurrent protector 500 includes a fuse 510, a first wire 511, and a second wire 512. The fuse 510 is disposed in the second accommodation cavity 3211, and the fuse 510 is electrically connected to the first wire 511 and the second wire 512 respectively. One end of the first wire 511 away from the fuse 510 is electrically connected to the connector 200, and one end of the second wire 512 away from the fuse 510 is electrically connected to the first mother terminal 323. When the current in the fuse 510 is greater than the threshold, the heat generated by the fuse 510 can melt the fuse 510, so that the first wire 511 and the second wire 512 are disconnected. Specifically, the first wire 511 and the second wire 512 can be flying leads.

[0064] It should be noted that in the normal working state, the current flows from the first mother terminal 323 through the second wire 512 to the fuse 510, and then through the fuse 510 through the first wire 511 to the connector 200, thereby forming a complete circuit path. The fuse 510 in the overcurrent protector 500 is disposed in the second accommodation cavity 3211 and has a specific current threshold. When the current in the circuit is greater than this threshold, the fuse 510 will generate a large amount of heat. Due to the design characteristics of the fuse 510, when the generated heat reaches a certain level, the fuse 510 will automatically melt. After the fuse 510 melts, the connection between the first wire 511 and the second wire 512 will be disconnected, thereby cutting off the circuit from the first mother terminal 323 to the connector 200 and realizing the function of overcurrent protection.

[0065] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A wire harness adapter device for electrically connecting to a battery module, characterized in that, Comprising: A connector, one end of which is used for electrically connecting with an external electrical device; A positive terminal adapter element, which includes a male positive terminal and a female positive terminal. The male positive terminal is used for electrically connecting with the positive terminal of the battery module, the female positive terminal is electrically connected with the other end of the connector, and the male positive terminal and the female positive terminal are detachably electrically connected; and A negative terminal adapter element, which includes a male negative terminal and a female negative terminal. The male negative terminal is used for electrically connecting with the negative terminal of the battery module, the female negative terminal is electrically connected with the other end of the connector, and the male negative terminal and the female negative terminal are detachably electrically connected.

2. The wire harness adapter device according to claim 1, characterized in that, The male positive terminal includes a first insulating housing, and a first clamping portion is provided on one side of the first insulating housing facing the female positive terminal; The female positive terminal includes a second insulating housing, and a second clamping portion adapted to the first clamping portion is provided on one side of the second insulating housing facing the first insulating housing, and the first clamping portion is clamped to the second clamping portion.

3. The wire harness adapter device according to claim 2, characterized in that, The first clamping portion is a clamping block, the second clamping portion is a clamping groove, and the clamping block is clamped in the clamping groove.

4. The harness adapter device according to claim 2, wherein The male positive terminal further includes a first male terminal. A first accommodating cavity is provided in the first insulating housing, and the first male terminal is arranged in the first accommodating cavity; The female positive terminal further includes a first female terminal. A second accommodating cavity is provided in the second insulating housing, and the first female terminal is arranged in the second accommodating cavity. When the first clamping portion is clamped to the second clamping portion, the first male terminal is electrically connected to the first female terminal.

5. The harness adapter device according to claim 4, wherein, The wire harness adapter device further includes an overcurrent protector, which is arranged in the second accommodating cavity of the second insulating housing. The overcurrent protector is electrically connected to the first female terminal and the connector respectively. When the current of the overcurrent protector is greater than the threshold value, the overcurrent protector can disconnect the circuit between the first female terminal and the connector.

6. The wire harness adapter device according to claim 5, wherein, The overcurrent protector includes a fuse, a first wire and a second wire. The fuse is arranged in the second accommodating cavity, and the fuse is electrically connected to the first wire and the second wire respectively. One end of the first wire away from the fuse is electrically connected to the connector, and one end of the second wire away from the fuse is electrically connected to the first female terminal. When the current of the fuse is greater than the threshold value, the heat generated by the fuse can melt the fuse, so that the first wire and the second wire are disconnected.

7. The wire harness adapter device according to claim 4, characterized in that The second insulating housing includes a first cylinder body and a second cylinder body. The first cylinder body is connected to the second cylinder body, and the interior of the first cylinder body and the interior of the second cylinder body form the second accommodating cavity. The diameter of the first cylinder body is larger than the diameter of the second cylinder body. The second clamping portion is arranged on the second cylinder body. The second cylinder body can extend into the first accommodating cavity, and the inner side wall of the second accommodating cavity sleeves the outer side wall of the second cylinder body.

8. The wire harness adapter device according to claim 7, characterized in that, The first insulating housing is of a cylinder structure, and the outer diameter of the first insulating housing is adapted to the outer diameter of the first cylinder body.

9. The harness adapter device according to claim 1, characterized in that, The negative electrode male terminal comprises a third insulating shell, and a third clamping portion is provided on a side of the third insulating shell facing the negative electrode female terminal; The negative electrode female terminal comprises a fourth insulating shell, a fourth clamping portion adapted to the third clamping portion is provided on a side of the fourth insulating shell facing the third insulating shell, and the third clamping portion is clamped to the fourth clamping portion; or The negative electrode male end further includes a second male terminal, a third accommodating cavity is provided in the third insulating housing, and the second male terminal is provided in the third accommodating cavity; The negative female terminal also includes a second female terminal. A third accommodating cavity is provided in the fourth insulating shell. The second female terminal is provided in the fourth accommodating cavity. When the third clamping portion is clamped to the fourth clamping portion, the second male terminal is electrically connected to the second female terminal.

10. A battery pack, characterized in that, It comprises a battery module and a wiring harness adapter as claimed in any one of claims 1 to 9, wherein the wiring harness adapter is electrically connected to the battery module.

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