Battery box body and high-performance lithium ion 12V starting battery pack

Abstract

The utility model relates to a battery box body and a high-performance lithium ion 12V starting battery pack. A containing cavity and a first opening are formed in the battery box body through a first shell; the accommodating cavity is used for accommodating a battery pack which is provided with a communication wire harness and a power wire harness; the first cover plate is arranged at the first opening, and the first surface of the first cover plate is provided with a first mounting area and a second mounting area; the first mounting area is used for fixing a communication wire harness, and the communication wire harness is used for connecting a communication interface; the connecting terminal assembly is arranged in the second mounting area; the first end of the connection terminal assembly is used for connecting external equipment and a power wire harness; the second cover plate is arranged on the first surface of the first cover plate so as to cover the first mounting area, so that the connection impedance of the battery pack is reduced, the crossing of electrical circuits is avoided, external equipment is conveniently connected with the battery pack through the connection terminal assembly, the wiring mode of the battery pack is simplified, the assembly universality of the battery pack is improved, and the electrical protection and safety of the battery are improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery box and a high-performance lithium-ion 12V starting battery pack. Background Art

[0002] The battery pack is a core component of an electric vehicle, responsible for storing and releasing electrical energy to drive the vehicle. The battery box is an important part of the battery pack. The battery pack is a grouped battery composed of single cells, a box body, a battery management system (BMS), and related installation structure parts (equipment). For example, a low-voltage battery pack for a vehicle provides electrical energy when the vehicle starts, powers a constant-power module when the vehicle is parked with the engine off, assists in discharging when the DC conversion output is insufficient, and converts high-voltage electricity into low-voltage electricity to charge the battery when charging is requested.

[0003] In the prior art, the battery pack usually has a large number of connection bars and fasteners, resulting in an increase in the connection impedance of the battery pack, a complex wiring method for the battery pack, easy crossing of electrical lines, and poor electrical protection and safety of the battery. Utility Model Content

[0004] Based on this, it is necessary to provide a battery box and a high-performance lithium-ion 12V starting battery pack that simplify the wiring method of the battery pack, reduce the connection impedance of the battery pack, avoid crossing of electrical lines, improve the assembly versatility of the battery pack, and have strong electrical protection and safety for the battery, aiming at the problems existing in the above-mentioned existing battery packs.

[0005] In a first aspect, the present application provides a battery box, including:

[0006] A first housing, the first housing is provided with a receiving cavity and a first opening; the receiving cavity is used to receive a battery pack, and the battery pack is provided with a communication wire harness and a power wire harness;

[0007] A first cover plate, the first cover plate is arranged at the first opening, and a first mounting area and a second mounting area are arranged on a first surface of the first cover plate; the first mounting area is used to fix the communication wire harness, and the communication wire harness is used to connect a communication interface;

[0008] A connection terminal assembly, the connection terminal assembly is arranged in the second mounting area; the connection terminal assembly is used to connect an external device and the power wire harness;

[0009] A second cover plate, the second cover plate is arranged on the first surface of the first cover plate to cover the first mounting area.

[0010] In one embodiment, the connection terminal assembly includes a positive terminal group and a negative terminal group; the second mounting area is provided with a first through-hole group and a second through-hole group;

[0011] The positive terminal group is arranged in the first through-hole group, and the negative terminal group is arranged in the second through-hole group.

[0012] In one embodiment, the positive terminal group includes a plurality of positive terminals, and the negative terminal group includes a plurality of negative terminals;

[0013] The first through-hole group includes a plurality of first through-holes, and the second through-hole group includes a plurality of second through-holes;

[0014] Each positive terminal is arranged in one-to-one correspondence with each first through-hole, and each positive terminal is connected to the positive electrode of the battery pack through a power harness;

[0015] Each negative terminal is arranged in one-to-one correspondence with each second through-hole, and each negative terminal is connected to the negative electrode of the battery pack through a power harness.

[0016] In one embodiment, the positive terminal is provided with a first connection portion and a second connection portion, and the negative terminal is provided with a third connection portion and a fourth connection portion;

[0017] The connection direction of the first connection portion is perpendicular to the connection direction of the second connection portion;

[0018] The connection direction of the third connection portion is perpendicular to the connection direction of the fourth connection portion.

[0019] In one embodiment, the positive connection terminal is further provided with a fifth connection portion, and the negative connection terminal is further provided with a sixth connection portion;

[0020] The connection direction of the fifth connection portion is perpendicular to the connection direction of the first connection portion, and the connection direction of the fifth connection portion is perpendicular to the connection direction of the second connection portion;

[0021] The connection direction of the sixth connection portion is perpendicular to the connection direction of the third connection portion, and the connection direction of the sixth connection portion is perpendicular to the connection direction of the fourth connection portion.

[0022] In one embodiment, the positive connection terminal is further provided with a seventh connection portion, and the negative connection terminal is further provided with an eighth connection portion;

[0023] The connection direction of the seventh connection portion is parallel to the connection direction of the fifth connection portion, and the seventh connection portion is adjacent to the corresponding first through-hole;

[0024] The connection direction of the eighth connection portion is parallel to the connection direction of the sixth connection portion, and the seventh connection portion is adjacent to the corresponding second through-hole.

[0025] In one embodiment, the first installation area is provided with a third through-hole and a first accommodation groove group; the third through-hole is connected to the accommodation cavity;

[0026] The second cover plate is provided with a second accommodation groove group corresponding to the first accommodation groove group, and the first accommodation groove group and the second accommodation groove group enclose to form an accommodation channel group; the third through hole communicates with the accommodation channel group; the communication interface is arranged adjacent to one end of the accommodation channel group;

[0027] The first end of the communication wire harness passes through the third through hole, the communication wire harness is arranged in the accommodation channel group, and the first end of the communication wire harness is connected to the communication interface.

[0028] In one embodiment, the accommodation channel group includes a first accommodation channel and a second accommodation channel, the communication wire harness includes a first communication sub-wire harness and a second communication sub-wire harness, and the communication interface includes a first communication sub-interface and a second communication sub-interface; the first communication sub-interface is arranged adjacent to one end of the first accommodation channel, and the second communication sub-interface is arranged adjacent to one end of the second accommodation channel;

[0029] The first end of the first communication sub-wire harness passes through the third through hole, the first communication sub-wire harness is arranged in the first accommodation channel, and the first end of the first communication sub-wire harness is connected to the first communication sub-interface; the first end of the second communication sub-wire harness passes through the third through hole, the second communication sub-wire harness is arranged in the second accommodation channel, and the first end of the second communication sub-wire harness is connected to the second communication sub-interface.

[0030] In one embodiment, the second cover plate is provided with a first clamping component, and the first surface of the first cover plate is provided with a second clamping component;

[0031] The second cover plate is arranged on the second clamping component of the first cover plate through the first clamping component.

[0032] In a second aspect, the present application further provides a high-performance lithium-ion 12V starting battery pack, including the battery box body of any one of the above.

[0033] One of the above technical solutions has the following advantages and beneficial effects:

[0034] In the above-mentioned battery box body, it includes a first housing, a first cover plate, a connection terminal assembly, and a second cover plate; the first housing is provided with a receiving cavity and a first opening; the receiving cavity is used to accommodate a battery pack, and the battery pack is provided with a communication wire harness and a power wire harness; the first cover plate is arranged at the first opening, and a first installation area and a second installation area are arranged on the first surface of the first cover plate; the first installation area is used to fix the communication wire harness, and the communication wire harness is used to connect a communication interface; the connection terminal assembly is arranged in the second installation area; the connection terminal assembly is used to connect an external device and the power wire harness; the second cover plate is arranged on the first surface of the first cover plate to cover the first installation area. In this application, the communication wire harness is fixed through the first installation area on the first cover plate, thereby reducing the connection impedance of the battery pack and avoiding the crossing of electrical circuits; by arranging the connection terminal assembly in the second installation area, it is convenient for the external device to establish a connection with the battery pack through the connection terminal assembly, simplifying the wiring method of the battery pack and improving the assembly versatility of the battery pack. By covering the first installation area with the second cover plate, it prevents external liquids, dust, etc. from entering the first installation area, enhancing the electrical protection and safety of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. is a schematic structural diagram of a battery box body in an embodiment;

[0036] Figure 2 FIG. is a schematic diagram of the first exploded structure of a battery box body in an embodiment;

[0037] Figure 3 FIG. is a schematic diagram of the second exploded structure of a battery box body in an embodiment;

[0038] Figure 4 FIG. is a schematic diagram of the third exploded structure of a battery box body in an embodiment;

[0039] Figure 5 FIG. is a schematic structural diagram of a positive terminal and a negative terminal in an embodiment.

[0040] REFERENCE NUMERALS:

[0041] 10. First housing; 110. Receiving cavity; 120. First opening; 20. First cover plate; 210. First installation area; 212. First receiving groove group; 214. Third through hole; 2222. First through hole; 226. Second clamping component; 312. Positive terminal; 3122. First connecting portion; 3124. Second connecting portion; 3126. Fifth connecting portion; 3128. Seventh connecting portion; 322. Negative terminal; 3222. Third connecting portion; 3224. Fourth connecting portion; 3226. Sixth connecting portion; 3228. Eighth connecting portion; 40. Second cover plate; 410. First clamping component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of this application described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0044] In addition, the meaning of the term "plurality" should be two or more.

[0045] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in conjunction with the embodiments.

[0046] In one embodiment, as Figures 1 to 3 shown, a battery box is provided. The battery box includes a first housing 10, a first cover plate 20, a connection terminal assembly, and a second cover plate 40; the first housing 10 is provided with a receiving cavity 110 and a first opening 120; the receiving cavity 110 is used to accommodate a battery pack, and the battery pack is provided with a communication wire harness and a power wire harness; the first cover plate 20 is arranged at the first opening 120, and a first mounting area 210 and a second mounting area are arranged on the first surface of the first cover plate 20; the first mounting area 210 is used to fix the communication wire harness, and the communication wire harness is used to connect to a communication interface; the connection terminal assembly is arranged in the second mounting area; the connection terminal assembly is used to connect an external device and the power wire harness; the second cover plate 40 is arranged on the first surface of the first cover plate 20 to cover the first mounting area 210.

[0047] Among them, the battery pack can be a lithium-ion battery pack. The battery pack may include a plurality of single cells, and each single cell can be connected in series and / or in parallel. Correspondingly, the single cell is a lithium-ion cell. The external device is an electrical device. For example, the external device can be a vehicle or the like.

[0048] The shape of the first housing 10 can be square, and the first housing 10 can be a housing made of a metal material or a non-metal material. The first housing 10 is provided with a receiving cavity 110 for receiving the battery pack. The top of the first housing 10 is provided with a first opening 120, and the first opening 120 communicates with the receiving cavity 110. Thus, the battery pack can be arranged in the receiving cavity 110 through the first opening 120. The battery pack is provided with a communication wire harness. Exemplarily, the communication wire harness can be used to transmit the collected data of the battery pack. For example, the battery pack is provided with a voltage sensor, a current sensor, and a temperature sensor, and the voltage sensor, the current sensor, and the temperature sensor are respectively connected to the second end of the communication wire harness. The communication wire harness can be used to transmit the voltage data, current data, temperature data, etc. of the battery pack. The battery pack is also provided with a power wire harness, and the power wire harness is used to transmit the electrical signal of the battery pack. For example, the first end of the power wire harness is used to connect the positive and negative electrodes of the battery pack.

[0049] The first cover plate 20 is arranged at the first opening 120. For example, the first cover plate 20 can be arranged at the first opening 120 of the first housing 10 by means of snap connection or screw connection, etc., to realize the sealing of the first opening 120. Exemplarily, the first cover plate 20 is provided with a first snap member, and the first housing 10 is provided with a second snap member. The first cover plate 20 is snap-connected to the second snap member of the first housing 10 to realize the installation and fixation of the first cover plate 20 at the first opening 120 of the first housing 10.

[0050] The first cover plate 20 has a first surface, and the first surface of the first cover plate 20 is the top surface. The first surface of the first cover plate 20 is provided with a first installation area 210 for installing and fixing the communication wire harness to realize the limiting and fixing of the communication wire harness. The first surface of the first cover plate 20 is also provided with a second installation area for installing and fixing the connection terminal assembly. Exemplarily, the first surface of the first cover plate 20 is also provided with a communication interface, and the first end of the communication wire harness is connected to the communication interface, which is convenient for an external device to plug into the communication interface to realize the communication connection between the external device and the battery pack. Thus, the collected data of the battery pack can be transmitted to the external device through the communication wire harness, and the external device can realize the real-time monitoring of the battery pack according to the communication wire harness.

[0051] The connection terminal assembly can be composed of several connection terminals. The connection terminal assembly is arranged in the second installation area. For example, the connection terminal assembly can be arranged in the second installation area by means of screw connection. The connection terminal assembly is used to connect the power wire harness, thereby realizing the electrical connection between the connection terminal assembly and the battery pack; the connection terminal assembly is also used to connect the external device. Thus, the battery pack can supply power to the external device through the power wire harness, and the external device can charge the battery pack through the power wire harness. By arranging the connection terminal assembly in the second installation area, it is convenient for the user to connect the external device, thereby simplifying the wiring method of the battery pack.

[0052] The second cover plate 40 is used to wrap and cover the first installation area 210 of the first cover plate 20, preventing the first installation area 210 from being exposed to the external environment. Exemplarily, the second cover plate 40 can be arranged on the first cover plate 20 by means of snap connection or screw connection, etc., to seal the first installation area 210 of the first cover plate 20, improving the electrical protection and safety of the battery.

[0053] In the above battery box, a receiving cavity 110 and a first opening 120 are provided through the first housing 10; the receiving cavity 110 is used to accommodate a battery pack, and the battery pack is provided with a communication wiring harness and a power wiring harness; the first cover plate 20 is arranged at the first opening 120, and a first installation area 210 and a second installation area are arranged on the first surface of the first cover plate 20; the first installation area 210 is used to fix the communication wiring harness, and the communication wiring harness is used to connect a communication interface; a connection terminal assembly is arranged in the second installation area; the first end of the connection terminal assembly is used to connect an external device and the power wiring harness; the second cover plate 40 is arranged on the first surface of the first cover plate 20 to cover the first installation area 210. In this application, the communication wiring harness is fixed through the first installation area 210 on the first cover plate 20, thereby reducing the connection impedance of the battery pack and avoiding the crossing of electrical lines; by arranging the connection terminal assembly in the second installation area, it is convenient for an external device to establish a connection with the battery pack through the connection terminal assembly, simplifying the wiring method of the battery pack and improving the assembly versatility of the battery pack. By covering the first installation area 210 with the second cover plate 40, external liquids, dust, etc. are prevented from entering the first installation area 210, enhancing the electrical protection and safety of the battery.

[0054] In one embodiment, the connection terminal assembly includes a positive terminal group and a negative terminal group; the second installation area is provided with a first through-hole group and a second through-hole group; the positive terminal group is arranged in the first through-hole group, and the negative terminal group is arranged in the second through-hole group.

[0055] Among them, the positive terminal group can be composed of several positive terminals, and the negative terminal group can be composed of several negative terminals. The positive terminal group is used to connect the positive pole of an external device, and the negative terminal group is used to connect the negative pole of an external device.

[0056] The second installation area is provided with a first through-hole group, and the positive terminal group can be arranged in the first through-hole group by means of screw connection, etc.; the second installation area is further provided with a second through-hole group, and the negative terminal group can also be arranged in the second through-hole group by means of screw connection, etc. For example, the first through-hole group can be arranged adjacent to the positive pole of the battery pack, and the second through-hole group can be arranged adjacent to the negative pole of the battery pack. The power wiring harness connecting the positive pole of the battery pack can be arranged on the positive terminal group by means of riveting or crimping, etc.; the power wiring harness connecting the negative pole of the battery pack can be arranged on the negative terminal group by means of riveting or crimping, etc.

[0057] In the above embodiments, by arranging the positive terminal group in the first through-hole group of the second installation area and the negative terminal group in the second through-hole group of the second installation area, it is convenient for external devices to establish electrical connections with the battery pack through the positive terminal group and the negative terminal group, simplifies the wiring method of the battery pack, and improves the assembly versatility of the battery pack.

[0058] In one embodiment, as Figure 2 and Figure 3 shown, the positive terminal group includes a plurality of positive terminals 312, and the negative terminal group includes a plurality of negative terminals 322; the first through-hole group includes a plurality of first through-holes 2222, and the second through-hole group includes a plurality of second through-holes; each positive terminal 312 is arranged corresponding to each first through-hole 2222, and each positive terminal 312 is connected to the positive electrode of the battery pack through a power harness; each negative terminal 322 is arranged corresponding to each second through-hole, and each negative terminal 322 is connected to the negative electrode of the battery pack through a power harness.

[0059] Among them, the second installation area is provided with a plurality of first through-holes 2222, the number of the first through-holes 2222 corresponds to the number of the positive terminals 312, and the positive terminals 312 can be arranged in the corresponding first through-holes 2222 by means of screwing or the like; the second installation area is also provided with a plurality of second through-holes, the number of the second through-holes corresponds to the number of the negative terminals 322, and the negative terminals 322 can be arranged in the corresponding second through-holes by means of screwing or the like.

[0060] Exemplarily, the power harness can be divided into a positive power harness and a negative power harness. The first end of the positive power harness is connected to the positive electrode of the battery pack, and the second end of the positive power harness can be provided with a harness terminal. The positive terminal 312 and the harness terminal of the positive power harness can be locked and fixed by passing a bolt through the corresponding first through-hole 2222, so as to realize the electrical connection between the positive terminal 312 and the positive power harness. The first end of the negative power harness is connected to the negative electrode of the battery pack, and the second end of the negative power harness can be provided with a harness terminal. The negative terminal 322 and the harness terminal of the negative power harness can be locked and fixed by passing a bolt through the corresponding second through-hole, so as to realize the electrical connection between the negative terminal 322 and the negative power harness.

[0061] In one example, the positive terminal group may include 2 positive terminals 312, and the negative terminal group may include 2 negative terminals 322; the user can select any one of the positive terminals 312 to connect to the positive electrode of the external device, and select any one of the negative terminals 322 to connect to the negative electrode of the external device, so as to realize the electrical connection between the external device and the battery pack, thereby improving the connection convenience of the battery, enabling the battery box to adapt to different application scenarios, and improving the assembly versatility of the battery pack.

[0062] In one embodiment, as Figure 2and Figure 5 As shown in Figure 5 , the positive terminal 312 is provided with a first connecting portion 3122 and a second connecting portion 3124, and the negative terminal 322 is provided with a third connecting portion 3222 and a fourth connecting portion 3224; the connecting direction of the first connecting portion 3122 is perpendicular to the connecting direction of the second connecting portion 3124; the connecting direction of the third connecting portion 3222 is perpendicular to the connecting direction of the fourth connecting portion 3224.

[0063] Among them, the first connecting portion 3122 of the positive terminal 312 may be in a plate-like structure, the second connecting portion 3124 of the positive terminal 312 may be in a plate-like structure, the first connecting portion 3122 may be provided with mounting holes, the second connecting portion 3124 may be provided with mounting holes, and the positive electrode of the external device may be set on the first connecting portion 3122 or the second connecting portion 3124 of the corresponding positive terminal 312 by means of screw connection or clip connection, etc. Based on the fact that the connecting direction of the first connecting portion 3122 is perpendicular to the connecting direction of the second connecting portion 3124, furthermore, the positive electrode of the external device can be connected and set on the first connecting portion 3122 based on the connecting direction of the first connecting portion 3122, and the positive electrode of the external device can also be connected and set on the second connecting portion 3124 based on the connecting direction of the second connecting portion 3124, which improves the connection convenience of the battery, facilitates the quick installation and disassembly of the battery positive electrode, enables the battery box body to adapt to different application scenarios, and improves the assembly versatility of the battery pack.

[0064] The third connecting portion 3222 of the negative terminal 322 may be in a plate-like structure, the fourth connecting portion 3224 of the negative terminal 322 may be in a plate-like structure, the third connecting portion 3222 may be provided with mounting holes, the fourth connecting portion 3224 may be provided with mounting holes, and the negative electrode of the external device may be set on the third connecting portion 3222 or the fourth connecting portion 3224 of the corresponding negative terminal 322 by means of screw connection or clip connection, etc. Based on the fact that the connecting direction of the third connecting portion 3222 is perpendicular to the connecting direction of the fourth connecting portion 3224, furthermore, the negative electrode of the external device can be connected and set on the third connecting portion 3222 based on the connecting direction of the third connecting portion 3222, and the negative electrode of the external device can also be connected and set on the fourth connecting portion 3224 based on the connecting direction of the fourth connecting portion 3224, which improves the connection convenience of the battery negative electrode, facilitates the quick installation and disassembly of the battery, enables the battery box body to adapt to different application scenarios, and improves the assembly versatility of the battery pack.

[0065] In one embodiment, as Figure 2 and Figure 5As shown, the positive connection terminal is further provided with a fifth connection portion 3126, and the negative connection terminal is further provided with a sixth connection portion 3226; the connection direction of the fifth connection portion 3126 is perpendicular to the connection direction of the first connection portion 3122, and the connection direction of the fifth connection portion 3126 is perpendicular to the connection direction of the second connection portion 3124; the connection direction of the sixth connection portion 3226 is perpendicular to the connection direction of the third connection portion 3222, and the connection direction of the sixth connection portion 3226 is perpendicular to the connection direction of the fourth connection portion 3224.

[0066] Among them, the fifth connection portion 3126 of the positive terminal 312 may be in a plate-like structure, and the fifth connection portion 3126 may be provided with mounting holes. The positive electrode of the external device can be arranged on the first connection portion 3122, the second connection portion 3124 or the fifth connection portion 3126 of the corresponding positive terminal 312 by means of screw connection or clip connection. Based on the connection direction of the fifth connection portion 3126 being perpendicular to the connection direction of the first connection portion 3122 or the second connection portion 3124, the positive electrode of the external device can be connected and arranged on the fifth connection portion 3126 based on the connection direction of the fifth connection portion 3126. The sixth connection portion 3226 of the negative terminal 322 may be in a plate-like structure, and the sixth connection portion 3226 may be provided with mounting holes. The negative electrode of the external device can be arranged on the third connection portion 3222, the fourth connection portion 3224 or the sixth connection portion 3226 of the corresponding negative terminal 322 by means of screw connection or clip connection. Based on the connection direction of the sixth connection portion 3226 being perpendicular to the connection direction of the third connection portion 3222 or the fourth connection portion 3224, the negative electrode of the external device can be connected and arranged on the sixth connection portion 3226 based on the connection direction of the sixth connection portion 3226, thereby diversifying the wiring methods for connecting the external device to the battery box, improving the connection convenience of the battery, facilitating the quick installation and disassembly of the battery, enabling the battery box to adapt to different application scenarios, and further improving the assembly versatility of the battery pack.

[0067] In one embodiment, as Figure 2 and Figure 5 shown, the positive connection terminal is further provided with a seventh connection portion 3128, and the negative connection terminal is further provided with an eighth connection portion 3228; the connection direction of the seventh connection portion 3128 is parallel to the connection direction of the fifth connection portion 3126, and the seventh connection portion 3128 is adjacent to the corresponding first through hole 2222; the connection direction of the eighth connection portion 3228 is parallel to the connection direction of the sixth connection portion 3226, and the seventh connection portion 3128 is adjacent to the corresponding second through hole.

[0068] Among them, the seventh connection portion 3128 of the positive terminal 312 may have a plate-like structure. The seventh connection portion 3128 may be provided with mounting holes. The positive electrode of the external device may be arranged on the first connection portion 3122, the second connection portion 3124, the fifth connection portion 3126 or the seventh connection portion 3128 of the corresponding positive terminal 312 by means of screw connection or clip connection. Based on the connection direction of the seventh connection portion 3128 being parallel to the connection direction of the fifth connection portion 3126, the positive electrode of the external device can be connected and arranged on the seventh connection portion 3128 based on the connection direction of the seventh connection portion 3128. The eighth connection portion 3228 of the negative terminal 322 may have a plate-like structure. The eighth connection portion 3228 may be provided with mounting holes. The negative electrode of the external device may be arranged on the third connection portion 3222, the fourth connection portion 3224, the sixth connection portion 3226 or the eighth connection portion 3228 of the corresponding negative terminal 322 by means of screw connection or clip connection. Based on the connection direction of the eighth connection portion 3228 being parallel to the connection direction of the sixth connection portion 3226, the negative electrode of the external device can be connected and arranged on the eighth connection portion 3228 based on the connection direction of the eighth connection portion 3228, further diversifying the wiring method for connecting the external device to the battery box body, improving the connection convenience of the battery, facilitating the quick installation and disassembly of the battery, enabling the battery box body to adapt to different application scenarios, and greatly improving the assembly versatility of the battery pack.

[0069] In one embodiment, as Figure 3 and Figure 4 shown, the first installation area 210 is provided with a third through hole 214 and a first accommodation groove group 212; the third through hole 214 is connected to the accommodation cavity 110; the second cover plate 40 is provided with a second accommodation groove group corresponding to the first accommodation groove group 212, and the first accommodation groove group 212 and the second accommodation groove group enclose to form an accommodation channel group; the third through hole 214 communicates with the accommodation channel group; the communication interface is arranged adjacent to one end of the accommodation channel group; the first end of the communication wire harness passes through the third through hole 214, the communication wire harness is arranged in the accommodation channel group, and the first end of the communication wire harness is connected to the communication interface.

[0070] Among them, the first accommodation groove group 212 may be in a long strip shape. The first accommodation groove group 212 and the second accommodation groove group enclose to form an accommodation channel group, and the accommodation channel group is used to accommodate the communication wire harness.

[0071] For example, the first end of the communication wire harness passes through the third through hole 214, and the communication wire harness is arranged on the first accommodation groove group 212. After the second cover plate 40 is covered on the first installation area 210 of the first cover plate 20, the second accommodation groove group of the second cover plate 40 and the first accommodation groove group 212 of the first installation area 210 enclose to form an accommodation channel group, thereby limiting and fixing the communication wire harness in the accommodation channel group and preventing the communication wire harness from being crossed and disorderly arranged.

[0072] The communication interface is disposed adjacent to one end of the accommodation channel group. Then, the first end of the communication wire harness is connected to the communication interface, facilitating the plugging of an external device into the communication interface to achieve the communication connection between the external device and the battery pack. Furthermore, the collected data of the battery pack can be transmitted to the external device through the communication wire harness, and the external device can realize the real-time monitoring of the battery pack according to the communication wire harness. Moreover, without using excessive connection bars and fasteners, the connection impedance of the battery pack is reduced.

[0073] In one embodiment, the accommodation channel group includes a first accommodation channel and a second accommodation channel, the communication wire harness includes a first communication sub-wire harness and a second communication sub-wire harness, and the communication interface includes a first communication sub-interface and a second communication sub-interface; the first communication sub-interface is disposed adjacent to one end of the first accommodation channel, and the second communication sub-interface is disposed adjacent to one end of the second accommodation channel; the first end of the first communication sub-wire harness passes through the third through hole 214, the first communication sub-wire harness is disposed in the first accommodation channel, and the first end of the first communication sub-wire harness is connected to the first communication sub-interface; the first end of the second communication sub-wire harness passes through the third through hole 214, the second communication sub-wire harness is disposed in the second accommodation channel, and the first end of the second communication sub-wire harness is connected to the second communication sub-interface.

[0074] Wherein, the first accommodation channel and the second accommodation channel may be in a long strip shape, the first accommodation channel and the second accommodation channel are parallel to each other and communicate with each other, the first accommodation is used to accommodate the first communication sub-wire harness, and the second accommodation is used to accommodate the second communication sub-wire harness.

[0075] For example, the first end of the first communication sub-wire harness passes through the third through hole 214, and the first communication sub-wire harness is disposed on the first accommodation channel; the first end of the second communication sub-wire harness passes through the third through hole 214, and the second communication sub-wire harness is disposed on the second accommodation channel. Then, the first communication sub-wire harness and the second communication sub-wire harness are limited and fixed in the first accommodation channel and the second accommodation channel, avoiding the cross and disorderly arrangement of the communication wire harness.

[0076] By disposing the first communication sub-interface adjacent to one end of the first accommodation channel, then the first end of the first communication sub-wire harness is connected to the first communication sub-interface; by disposing the second communication sub-interface adjacent to one end of the second accommodation channel, then the first end of the second communication sub-wire harness is connected to the second communication sub-interface, facilitating the plugging of an external device into the first communication sub-interface or the second communication sub-interface, improving the assembly versatility of the battery pack, achieving the communication connection between the external device and the battery pack, and without using excessive connection bars and fasteners, reducing the connection impedance of the battery pack.

[0077] In one embodiment, as Figure 3 and Figure 4As shown, the second cover plate 40 is provided with a first clamping component 410, and the first surface of the first cover plate 20 is provided with a second clamping component 226; the second cover plate 40 is arranged on the second clamping component 226 of the first cover plate 20 through the first clamping component 410.

[0078] Among them, the first clamping component 410 can be composed of several convex ribs, and the second clamping component 226 can be composed of several grooves, and each convex rib is arranged corresponding to each groove one by one. The second cover plate 40 is clamped with the second clamping component 226 of the first cover plate 20 through the first clamping component 410, so as to realize the installation of the second cover plate 40 on the first cover plate 20, which is convenient for the disassembly and assembly of the second cover plate 40, and at the same time realizes the coverage of the first installation area 210 of the first cover plate 20, preventing external liquids, dust, etc. from entering the first installation area 210, and improving the electrical protection and safety of the battery.

[0079] In one embodiment, a high-performance lithium-ion 12V starting battery pack is further provided, including the battery box described in any one of the above.

[0080] Among them, the specific description content of the battery box can refer to the specific description of the battery box in the above embodiment, and will not be repeated here.

[0081] The first housing is provided with a receiving cavity and a first opening; the battery pack is arranged in the receiving cavity, and the battery pack is provided with a communication wire harness and a power wire harness; the first cover plate is arranged at the first opening, and the first surface of the first cover plate is provided with a first installation area and a second installation area; the first installation area is used to fix the communication wire harness, and the communication wire harness is used to connect the communication interface; the connection terminal assembly is arranged in the second installation area; the first end of the connection terminal assembly is used to connect the external device and the power wire harness; the second cover plate is arranged on the first surface of the first cover plate to cover the first installation area. In this application, the communication wire harness is fixed through the first installation area on the first cover plate, thereby reducing the connection impedance of the battery pack and avoiding the intersection of electrical circuits; by arranging the connection terminal assembly in the second installation area, it is convenient for the external device to establish a connection with the battery pack through the connection terminal assembly, simplifying the wiring method of the battery pack and improving the assembly versatility of the battery pack. By covering the first installation area with the second cover plate, external liquids, dust, etc. are prevented from entering the first installation area, and the electrical protection and safety of the battery are improved.

[0082] It should be noted that the high-performance lithium-ion 12V starting battery pack may further include components such as BMS. Specifically, the high-performance lithium-ion 12V starting battery pack may include more components than those described in the above embodiments, or combine certain components, or have different component arrangements.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0084] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A battery box, characterized in that: include: A first shell, wherein the first shell is provided with a receiving cavity and a first opening; The accommodating cavity is used to accommodate a battery pack, and the battery pack is provided with a communication harness and a power harness; A first cover plate, the first cover plate is arranged at the first opening, and a first surface of the first cover plate is provided with a first mounting area and a second mounting area; the first mounting area is used to fix the communication harness, and the communication harness is used to connect the communication interface; A connecting terminal assembly, the connecting terminal assembly being arranged in the second mounting area; the connecting terminal assembly being used to connect an external device and the power harness; A second cover plate, wherein the second cover plate is disposed on a first surface of the first cover plate to cover the first installation area.

2. The battery box according to claim 1, characterized in that: The connecting terminal assembly includes a positive terminal group and a negative terminal group; the second mounting area is provided with a first through hole group and a second through hole group; The positive terminal group is disposed in the first through hole group, and the negative terminal group is disposed in the second through hole group.

3. The battery box according to claim 2, characterized in that: The positive terminal group includes a plurality of positive terminals, and the negative terminal group includes a plurality of negative terminals; The first through hole group includes a plurality of first through holes, and the second through hole group includes a plurality of second through holes; Each of the positive terminals is arranged in one-to-one correspondence with each of the first through holes, and each of the positive terminals is connected to the positive electrode of the battery pack through the power harness; Each of the negative terminals is arranged in one-to-one correspondence with each of the second through holes, and each of the negative terminals is connected to the negative electrode of the battery pack through the power harness.

4. The battery box according to claim 3, characterized in that: The positive terminal is provided with a first connection portion and a second connection portion, and the negative terminal is provided with a third connection portion and a fourth connection portion; The connection direction of the first connection portion is perpendicular to the connection direction of the second connection portion; A connection direction of the third connection portion is perpendicular to a connection direction of the fourth connection portion.

5. The battery case according to claim 4, characterized in that: The positive electrode connection terminal is further provided with a fifth connection portion, and the negative electrode connection terminal is further provided with a sixth connection portion; The connection direction of the fifth connection portion is perpendicular to the connection direction of the first connection portion, and the connection direction of the fifth connection portion is perpendicular to the connection direction of the second connection portion; A connection direction of the sixth connection portion is perpendicular to a connection direction of the third connection portion, and a connection direction of the sixth connection portion is perpendicular to a connection direction of the fourth connection portion.

6. The battery box according to claim 5, characterized in that: The positive electrode connection terminal is further provided with a seventh connection portion, and the negative electrode connection terminal is further provided with an eighth connection portion; The connection direction of the seventh connection portion is parallel to the connection direction of the fifth connection portion, and the seventh connection portion is adjacent to the corresponding first through hole; A connection direction of the eighth connection portion is parallel to a connection direction of the sixth connection portion, and the seventh connection portion is adjacent to a corresponding second through hole.

7. The battery box according to claim 1, characterized in that: The first installation area is provided with a third through hole and a first accommodating groove group; the third through hole is connected to the accommodating cavity; The second cover plate is provided with a second accommodating groove group corresponding to the first accommodating groove group, the first accommodating groove group and the second accommodating groove group are enclosed to form an accommodating channel group; the third through hole is connected to the accommodating channel group; The communication interface is disposed adjacent to one end of the accommodating channel group; The first end of the communication harness passes through the third through hole, the communication harness is arranged in the accommodating channel group, and the first end of the communication harness is connected to the communication interface.

8. The battery case according to claim 7, characterized in that: The accommodating channel group includes a first accommodating channel and a second accommodating channel, the communication harness includes a first communication sub-harness and a second communication sub-harness, and the communication interface includes a first communication sub-interface and a second communication sub-interface; the first communication sub-interface is arranged adjacent to one end of the first accommodating channel, and the second communication sub-interface is arranged adjacent to one end of the second accommodating channel; The first end of the first communication sub-wiring harness passes through the third through hole, the first communication sub-wiring harness is arranged in the first accommodating channel, and the first end of the first communication sub-wiring harness is connected to the first communication sub-interface; the first end of the second communication sub-wiring harness passes through the third through hole, the second communication sub-wiring harness is arranged in the second accommodating channel, and the first end of the second communication sub-wiring harness is connected to the second communication sub-interface.

9. The battery case according to any one of claims 1 to 8, characterized in that: The second cover plate is provided with a first clamping assembly, and the first surface of the first cover plate is provided with a second clamping assembly; The second cover plate is arranged on the second clamping assembly of the first cover plate through the first clamping assembly.

10. A high performance lithium-ion 12V starting battery pack, characterized in that: A battery case comprising the battery case described in any one of claims 1 to 9.

Images