WO2020215507A1

WO2020215507A1 - Battery wiring terminal mechanism, power battery system, and electric vehicle

Info

Publication number: WO2020215507A1
Application number: PCT/CN2019/097212
Authority: WO
Inventors: 申望屏; 伍伟东; 陈耀坤; 张华农
Original assignee: 深圳市雄韬电源科技股份有限公司
Priority date: 2019-04-24
Filing date: 2019-07-23
Publication date: 2020-10-29
Also published as: CN109920961A

Abstract

The present invention relates to a battery wiring terminal mechanism, a power battery system, and an electric vehicle. The battery wiring terminal mechanism comprises a fixed plate, a charging wiring terminal component and a discharging wiring terminal component provided on the fixed plate, and a serial connection component. The charging wiring terminal component comprises a positive charging wiring terminal provided through the fixed plate and a negative charging wiring terminal. The discharging wiring terminal component comprises a positive discharging wiring terminal provided through the fixed plate and a negative discharging wiring terminal. The positive discharging wiring terminal and the positive charging wiring terminal are arranged in parallel; the negative discharging wiring terminal and the negative charging wiring terminal are arranged in parallel. The serial connection component comprises a first serial connection metal plate connected to the positive discharging wiring terminal and to the positive charging wiring terminal and a second serial connection metal plate connected to the negative discharging wiring terminal and to the negative charging terminal. The solution provided in the present not only satisfies general performance requirements and eliminates safety hazards, but also is convenient and simple to assemble, maintain, and replace.

Description

Battery terminal mechanism, power battery system and electric vehicle

Technical field

The present invention relates to the technical field of power batteries, in particular to a gearbox battery terminal mechanism, a power battery system and an electric vehicle.

Background technique

At present, the global economy is facing a huge energy crisis. Energy conservation, emission reduction, and the development of new energy sources that can replace fossil fuels are even more urgent needs of mankind. Facing the increasingly stringent exhaust emission standards in China and even the world and the energy crisis in the future, major auto manufacturers are developing low-emission new energy technologies to adapt to this development trend. Among them, pure electric vehicles are currently the major auto companies. One of the areas of research and development.

In electric vehicles, the power battery system is an important part of it. In the power battery system, the positive and negative terminal mechanism is used as the output/input interface for the power battery system to exchange electric energy with the outside, which builds a communication bridge between the circuits, so that the current flows to realize the power transmission, which is the power battery system Very important functional component. Moreover, the reliable connection and easy removal of the positive and negative terminal mechanism makes it an indispensable accessory between the high-voltage control box and the power battery box, while the positive and negative terminal mechanism carries high voltage and high current transmission In the event of an accident, the consequences will be unimaginable. Therefore, the positive and negative terminal structure must not only meet general performance requirements and eliminate safety hazards, but also require easy assembly, maintenance and replacement.

Summary of the invention

Based on this, the present invention provides a battery terminal mechanism, a power battery system and an electric vehicle, which not only meets general performance requirements and eliminates safety hazards, but also is convenient and simple to assemble, maintain and replace.

In order to achieve the above objectives, the present invention proposes the following technical solutions:

A battery terminal mechanism includes a fixing plate, a charging terminal assembly and a discharging terminal assembly arranged on the fixing plate, and a series assembly connecting the charging terminal assembly and the discharging terminal assembly in series;

The charging terminal assembly includes a positive charging terminal penetrating through the fixing plate, and a negative charging terminal adjacent to the positive charging terminal;

The discharging terminal assembly includes a positive discharging terminal penetrating through the fixing plate, and a negative discharging terminal adjacent to the positive discharging terminal; wherein, the positive discharging terminal and the positive charging terminal The terminals are arranged side by side as a first terminal row, the negative discharge connecting terminal and the negative charging connecting terminal are arranged side by side as a second terminal row, and the first terminal row and the second terminal row are arranged in a staggered manner;

The series assembly includes a first series connection metal plate with two ends respectively connected to the positive discharge terminal and the positive charging terminal, and a first series connection terminal with two ends respectively connected to the negative discharge terminal and the negative charging terminal Two metal plates are connected in series.

Optionally, the positive discharge connection terminal and the positive charge connection terminal are respectively provided on both sides of the second terminal row;

Alternatively, the negative discharge connection terminal and the negative charge connection terminal are respectively arranged on both sides of the first terminal row.

Optionally, the first terminal row is arranged on the edge of the fixing plate, and the second terminal row is arranged on the middle of the fixing plate;

Alternatively, the first terminal row is arranged in the middle of the fixing plate, and the second terminal row is arranged on the edge of the fixing plate.

Optionally, the first series connection metal plate and the second series connection metal plate are both configured as copper plates, and the length of the first series connection metal plate and the length of the second series connection metal plate are different.

Optionally, the positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal all include a terminal body penetrating through the fixing plate and connected to the terminal A first terminal at one end of the body, and a second terminal connected to the other end of the terminal body, the first terminal is connected to a cable, and the second terminal is connected to the first series metal plate or The second series connection metal plate is connected.

Optionally, the terminal body includes a terminal connection base detachably connected to the fixing plate, and a terminal main body arranged in the middle of the terminal connection base; one end of the terminal main body is provided with a connection hole, and the other There is a connecting plate at one end;

The first terminal includes a first connecting screw arranged in the connecting hole, and the second terminal includes a connecting plate and the first series connection metal plate or the second series connection metal plate The second connecting screw.

Optionally, the fixing plate includes a plate main body, and four terminal connection holes opened on the plate main body, and the four terminal connection holes are connected to the positive charging terminal, the negative charging terminal, The positive discharge connection terminal and the negative discharge connection terminal correspond;

The terminal body is inserted through the terminal connection hole, and the terminal connection base is detachably connected to the board body by a third connecting screw.

Optionally, the four cables connected to the positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal are arranged longitudinally or/and horizontally, and The four cables are arranged in a staggered manner.

In addition, the present invention also provides a power battery system, including a power battery box, and the battery terminal mechanism as described above connected to the power battery box;

The power battery box includes a battery compartment, and at least one battery module structure arranged in the battery compartment. The charging terminal assembly and the discharging terminal assembly of the battery terminal mechanism are electrically connected to the battery module structure. connection.

In addition, the present invention also provides an electric vehicle including the power battery system described above.

In the technical solution proposed by the present invention, two positive (negative) connection terminals in the front row and two negative (positive) connection terminals in the rear row are arranged in a staggered arrangement so that the wires do not cross in the same direction, which improves the safety of the product; Longitudinal outlet mode, the cable can be outlet from multiple directions to improve the operability of the product; the positive and negative terminals are staggered in series before and after, and the length of the two series connection metal plates is different, eliminating the risk of wrong connection.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structures shown in these drawings.

FIG. 1 is a schematic diagram of a three-dimensional structure when the battery terminal mechanism according to an embodiment of the present invention is installed on a power battery box;

2 is a schematic diagram 1 of the three-dimensional structure of the battery terminal mechanism according to the embodiment of the present invention;

FIG. 3 is a second schematic diagram of the three-dimensional structure of the battery terminal mechanism according to the embodiment of the present invention;

4 is a schematic diagram of the three-dimensional structure of the fixing plate of the battery terminal mechanism according to the embodiment of the present invention;

5 is a schematic diagram of the three-dimensional structure of the battery terminal mechanism according to the embodiment of the present invention when the fixing plate is removed;

Fig. 6 is a three-dimensional schematic diagram of a plurality of connection terminals of the battery connection terminal mechanism according to an embodiment of the present invention.

Explanation of icon numbers: 10-power battery box, 12-box cover body, 20-battery terminal mechanism, 30-cable, 210-fixing plate, 212-board body, 214-terminal connection hole, 220-positive charging wiring Terminal, 222-terminal body, 224-terminal connection platform, 226-first terminal, 228-second terminal, 230-negative charging terminal, 240-positive discharge terminal, 250-negative discharge terminal, 260- The first series connection metal plate, 270-the second series connection metal plate.

The realization of the objectives, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom...) involved in the embodiment of the present invention, the directional indication is only used to explain that it is in a specific posture ( As shown in the figure), the relative positional relationship and movement conditions of the components under the following, if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions related to "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as instructions or implications Its relative importance or implicitly indicates the number of technical features indicated. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the protection scope of the present invention.

As shown in Figure 2, the present invention provides a battery terminal mechanism 20, including a fixing plate 210, a charging terminal assembly and a discharging terminal assembly arranged on the fixing plate 210, and a series connection of the charging terminal assembly and the discharging terminal assembly A series of components of components. By providing the fixing plate 210, on the one hand, it is convenient to fix the charging terminal assembly and the discharging terminal assembly, and on the other hand, it is convenient to fix the entire battery terminal mechanism 20 to other structures. The charging terminal assembly can be connected to the charging connector for charging, and the discharging connection terminal assembly can be connected to the discharging connector for discharging.

Specifically, as shown in FIGS. 2 to 5, the above-mentioned charging terminal assembly may include a positive charging terminal 220 penetrating on the fixing plate 210 and a negative charging terminal 230 adjacent to the positive charging terminal 220. That is, the charging terminal assembly includes a positive charging terminal 220 and a negative charging terminal 230 that are adjacently arranged, one end of which is electrically connected to the positive and negative electrodes of the charging connector, and the other end is electrically connected to the positive and negative electrodes of the battery to be charged. . Moreover, the above-mentioned discharge terminal assembly may include a positive discharge terminal 240 that is penetrated on the fixing plate, and a negative discharge terminal 250 adjacent to the positive discharge terminal 240. That is, the discharging terminal assembly also includes a positive discharging terminal 240 and a negative discharging terminal 250 which are arranged adjacently, one end of which is electrically connected to the positive electrode and the negative electrode of the discharging connector, and the other end is respectively connected to the battery to be discharged (which can be The positive and negative electrodes of the battery are electrically connected. Moreover, the above-mentioned series assembly may include a first series connection metal plate 260 with two ends respectively connected to a positive discharge terminal 240 and a positive charge terminal 220, and a second series connection with both ends of a negative discharge terminal 250 and a negative charge terminal 230 respectively. Connect the metal plate 270. The positive discharging terminal 240 and the positive charging terminal 220 can be conveniently connected through the first series metal plate 260, so that both can be electrically connected to the positive electrode of the battery to be discharged (that is, the battery to be charged) at the same time; The two series connection metal plates 270 can conveniently connect the negative discharge terminal 250 and the negative charge terminal 230, so that they can be electrically connected to the negative electrode of the battery to be discharged (ie the battery to be charged) at the same time, making the connection more convenient and simple .

Wherein, the positive discharge terminal 240 and the positive charging terminal 220 can be arranged side by side as a first terminal row, the above negative discharge terminal 250 and the negative charging terminal 230 can be arranged side by side as a second terminal row, and the first terminal row and the first terminal row The second terminal block is set in a wrong position. In this way, the positive discharging terminal 240 and the positive charging terminal 220 can be arranged in a row to facilitate the series connection of the two through the first series connection metal plate 260; the negative discharging terminal 250 and the negative charging terminal 230 can also be connected in series. It is arranged in a row to facilitate the series connection of the two through the second series connection metal plate 270; moreover, by displacing the first terminal row and the second terminal row, the positive discharge terminal 240 and the positive charge terminal can be connected 220 and the negative discharge terminal 250 and the negative charge terminal 230 are arranged in a staggered arrangement, and since the positive discharge terminal 240 is adjacent to the negative discharge terminal 250, the positive charge terminal 220 and the negative charge terminal 230 are adjacent to each other. When the discharge terminals (that is, the positive discharge terminal 240, the negative charge terminal 230, the positive charge terminal 220, and the negative discharge terminal 250) are discharged in the same direction, the cables connected to the charge and discharge terminals will not cross. Moreover, the wiring space is larger, and it is convenient to connect the charging and discharging terminals in series by connecting the metal plates in series, which reduces the operation difficulty and cost.

Moreover, in some embodiments, the above-mentioned positive discharging terminal 240 and positive charging terminal 220 may be respectively provided on both sides of the second terminal row. That is, the positive discharge terminal 240 and the positive charge terminal 220 are arranged on both sides of the negative discharge terminal 250 and the negative charge terminal 230, and the positive discharge terminal is adjacent to the negative discharge terminal, and the positive charge terminal is adjacent to the negative charge terminal. Adjacent, the wiring is neat but not crossed, and the wiring space is large, which is convenient for operation.

In addition, in other embodiments, the above-mentioned negative discharge terminal 250 and negative charge terminal 230 may be respectively provided on both sides of the first terminal row. That is, the negative discharge terminal 250 and the negative charge terminal 230 are arranged on both sides of the positive discharge terminal 240 and the positive charge terminal 220, and the positive discharge terminal 240 is adjacent to the negative discharge terminal 250, and the positive charge terminal 220 is connected to the negative The charging terminals 230 are adjacent to each other, so that the wiring is neat but does not cross, and the wiring space is large, which is convenient for operation.

Moreover, in some embodiments, the above-mentioned first terminal row may be arranged on the edge of the fixing plate 210, and the second terminal row may be arranged on the middle of the fixing plate 210. That is, the positive discharging terminal 240 and the positive charging terminal 220 are arranged near the edge of the fixed plate 210, and the negative discharging terminal 250 and the negative charging terminal 230 are arranged at the middle position of the fixed plate 210 to facilitate the wiring operation. .

In addition, in other embodiments, the above-mentioned first terminal row may be arranged in the middle of the fixing plate 210, and the second terminal row may be arranged on the edge of the fixing plate 210. That is, the negative discharging terminal 250 and the negative charging terminal 230 are arranged close to the edge of the fixed plate 210, and the positive discharging terminal 240 and the positive charging terminal 220 are arranged at the middle position of the fixed plate 210 to facilitate the wiring operation .

In addition, both the first series metal plate 260 and the second series metal plate 270 can be configured as copper plates, and the length of the first series metal plate 260 and the length of the second series metal plate 270 are different. The conductive performance of the copper plate is better, and by setting the lengths of the two metal plates to be different, the two can be easily distinguished to avoid wrong wiring. Specifically, the length of the first series metal plate 260 can be greater than the length of the second series metal plate 270, and the length of the second series metal plate 270 can also be greater than the length of the first series metal plate 260.

In addition, the above-mentioned positive charging terminal 220, negative charging terminal 230, positive discharging terminal 240, and negative discharging terminal 250 may all include a terminal body 222 penetrating through the fixing plate 210, and a first terminal connected to one end of the terminal body 222. The terminal 226 and the second terminal 228 connected to the other end of the terminal body 222, the first terminal 226 is connected to the cable 30, and the second terminal 228 is connected to the first series metal plate 260 or the second series metal plate 270 connections. The terminal body 222 facilitates fixing the entire terminal to the fixing plate 210, and also facilitates electrical communication between the first terminal 226 and the second terminal 228 at both ends of the terminal body 222. The first terminal 226 at one end of the terminal body 222 can be electrically connected to the charging connector or the discharging connector through the cable 30; the second terminal 228 at the other end of the terminal body 222 can be easily connected to the first string The connection metal plate 260 or the second series connection metal plate 270 is electrically connected, and then the first series connection metal plate 260 or the second series connection metal plate 270 is electrically connected to the rechargeable battery (ie, the discharge battery) through a wire.

Further, as shown in FIG. 6, the above-mentioned terminal body 222 may include a terminal connection base 224 detachably connected to the fixing plate 210 and a terminal main body arranged in the middle of the terminal connection base 224. One end of the terminal body is provided with a connecting hole, and the other end of the terminal body is provided with a connecting plate. Furthermore, the first terminal 226 may include a first connecting screw provided in the connecting hole, and the second terminal 228 may include a second connection connecting the connecting plate and the first series connection metal plate 260 or the second series connection metal plate 270 Screw. The cable 30 can be easily detached and connected through the first connecting screw to connect with the charging connector or the discharging connector; through the second connecting screw, the wire can be easily detached and electrically connected to the rechargeable battery or discharge battery. Make a detachable electrical connection. Moreover, by setting the first terminal 226 in the form of a first connecting screw and a connecting hole, wiring and disassembly are convenient and simple; by setting the second terminal 228 in the form of a second connecting screw and a connecting plate, the wiring and disassembly are also convenient. Very convenient and simple.

Moreover, as shown in FIG. 4, the above-mentioned fixing plate 210 may include a plate main body 212, and four terminal connection holes 214 opened on the plate main body 212. The four terminal connection holes 214 are connected to the positive charging terminal 220 and the negative charging terminal respectively. The terminals 230, the positive discharge terminal 240, and the negative discharge terminal 250 correspond to each other, and the positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal can be installed at the four terminal connection holes 214 respectively. Moreover, the above-mentioned terminal body can be inserted into the terminal connection hole 214, and the terminal connection stand 224 is detachably connected to the board body 212 by a third connection screw. The connection terminal can be detachably fixed on the fixing plate 210 through the terminal connection stand 224, and the two ends of the terminal body are respectively located on both sides of the fixing plate, that is, the first terminal and the second terminal are respectively located on both sides of the fixing plate. It is convenient for wiring and routing.

In addition, the four cables 30 connected to the positive charging terminal 220, the negative charging terminal 230, the positive discharging terminal 240, and the first terminal 226 of the negative discharging terminal 250 are arranged longitudinally or/and horizontally, and four The cables 30 are misplaced. That is, the two cables connected to the positive charging terminal 220 and the negative charging terminal 230 are arranged longitudinally, and the two cables connected to the positive discharging terminal 240 and the negative discharging terminal 250 are arranged longitudinally; or, the positive charging terminal The two cables 30 connected to the terminal 220 and the negative charging terminal 230 are arranged horizontally, and the two cables 30 connected to the positive discharge terminal 220 and the negative discharge terminal 230 are arranged horizontally, but the former and the latter extend in opposite directions Or, the two cables 30 connected to the positive charging terminal 220 and the negative charging terminal 230 are arranged horizontally, and the two cables 30 connected to the positive discharge terminal 240 and the negative discharge terminal 250 are arranged longitudinally; or, positive charging The two cables 30 connected to the terminal 220 and the negative charging terminal 230 are arranged longitudinally, and the two cables 30 connected to the positive discharging terminal 240 and the negative discharging terminal 250 are arranged horizontally; or, the positive charging terminal 220, the positive The two cables 30 connected to the discharge terminal 240 are arranged horizontally, and the two cables 30 connected to the negative charge terminal 230 and the negative discharge terminal 250 are arranged longitudinally; alternatively, the positive charge terminal 220 and the positive discharge terminal 240 are connected The two cables 30 are arranged longitudinally, and the two cables 30 connected to the negative charging terminal 230 and the negative discharging terminal 250 are arranged horizontally. In the same way, the multiple wires connected to the second terminal 228 of the positive charging terminal 220, the negative charging terminal 230, the positive discharging terminal 240, and the negative discharging terminal 250 can also be arranged vertically or/and horizontally, and Multiple wires are not interlaced.

In addition, as shown in FIG. 1, the present invention also proposes a power battery system, which includes a power battery box 10 and the above-mentioned battery terminal mechanism 20 connected to the power battery box 10. The battery terminal mechanism 20 can be connected to a charging connector or a discharging connector to charge or discharge the power battery box 10. Moreover, the power battery box 10 may include a battery compartment, and at least one battery module structure provided in the battery compartment, and the charging terminal assembly and the discharging terminal assembly of the battery terminal mechanism are electrically connected to the battery module structure. That is, the first series connection metal plate and the second series connection metal plate of the battery terminal mechanism can be electrically connected with the positive electrode and the negative electrode of the battery module structure to facilitate charging and discharging of the battery module structure.

Moreover, the above-mentioned battery compartment can include a cylindrical main compartment body with an open top, and a cover body 12 covering the top of the main compartment body. The battery module structure can be accommodated in a cavity in the main compartment body. The mechanism 20 can be provided on the box cover 12. Moreover, one battery module structure or multiple battery module structures can be provided in the battery compartment. When multiple battery module structures are provided, these battery module structures can be arranged in one layer or in multiple layers, and there can be gaps between adjacent battery module structures. Various modular battery module structures can be placed in different sizes of battery compartments to meet the requirements of battery boxes of different capacities and sizes, and through different parallel-series matching methods, modules of different voltages and currents can be formed to realize power batteries. The modules of the system are modularized. In this way, it brings a lot of convenience for subsequent maintenance, interchange of battery modules and battery echelon utilization.

Moreover, the above-mentioned battery module structure may include a support structure, and at least one battery module unit provided on the support structure. In this way, the battery module can be arranged, and the battery module unit can be fixed by the bracket structure, and the corresponding number of battery module units can be arranged on the bracket structure according to the needs, which can adapt to different specification requirements. Moreover, when a problem occurs in one of the battery module units, it can be replaced and maintained without disassembly and assembly to replace all the batteries.

In the technical solution proposed by the present invention, two positive (negative) connection terminals in the front row and two negative (positive) connection terminals in the rear row are arranged in a staggered arrangement so that the wires do not cross in the same direction, which improves the safety of the product; Longitudinal outlet mode, the cable can be outlet from multiple directions to improve the operability of the product; the positive and negative terminals are staggered in series before and after, and the length of the two series connection metal plates is different, eliminating the risk of wrong connection. It can avoid the potential safety hazards caused by the crossing of high-voltage positive and negative cables, which can avoid long-term vibration of the cables when the vehicle is driving, causing friction or restraint between the cables, and loosening or pulling the locking screw at one end of the cable The electronic components connected with the locking screws affect the reliability of the connection and the life of the cable.

The above descriptions are only the preferred embodiments of the present invention, and do not limit the scope of the present invention. Under the inventive concept of the present invention, equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect use Other related technical fields are included in the scope of patent protection of the present invention.

Claims

A battery terminal mechanism, which is characterized by comprising a fixing plate, a charging terminal assembly and a discharging terminal assembly arranged on the fixing plate, and a series connection of the charging terminal assembly and the discharging terminal assembly in series Component

The charging terminal assembly includes a positive charging terminal penetrating through the fixing plate, and a negative charging terminal adjacent to the positive charging terminal;

The discharging terminal assembly includes a positive discharging terminal passing through the fixing plate, and a negative discharging terminal adjacent to the positive discharging terminal; wherein, the positive discharging terminal and the positive charging terminal The terminals are arranged side by side as a first terminal row, the negative discharge connecting terminal and the negative charging connecting terminal are arranged side by side as a second terminal row, and the first terminal row and the second terminal row are arranged in a staggered manner;

The series assembly includes a first series connection metal plate with two ends respectively connected to the positive discharge terminal and the positive charging terminal, and a first series connection terminal with two ends respectively connected to the negative discharge terminal and the negative charging terminal Two metal plates are connected in series.
The battery connection terminal mechanism according to claim 1, wherein the positive discharge connection terminal and the positive charge connection terminal are respectively provided on both sides of the second terminal row;

Alternatively, the negative discharge connection terminal and the negative charge connection terminal are respectively arranged on both sides of the first terminal row.
The battery connection terminal mechanism according to claim 1, wherein the first terminal row is arranged on the edge of the fixing plate, and the second terminal row is arranged on the middle of the fixing plate;

Alternatively, the first terminal row is arranged in the middle of the fixing plate, and the second terminal row is arranged on the edge of the fixing plate.
The battery connection terminal mechanism according to claim 1, wherein the first series connection metal plate and the second series connection metal plate are both configured as copper plates, and the length of the first series connection metal plate and The lengths of the second series connection metal plates are different.
The battery terminal mechanism according to any one of claims 1 to 4, wherein the positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal are all It includes a terminal body pierced on the fixing plate, a first terminal connected to one end of the terminal body, and a second terminal connected to the other end of the terminal body, the first terminal and a cable Connected, the second terminal is connected to the first series connection metal plate or the second series connection metal plate.
The battery connection terminal mechanism according to claim 5, wherein the terminal body comprises a terminal connection base detachably connected to the fixing plate, and a terminal main body arranged in the middle of the terminal connection base; the terminal One end of the main body is provided with a connecting hole, and the other end of the terminal main body is provided with a connecting plate;

The first terminal includes a first connecting screw arranged in the connecting hole, and the second terminal includes a connecting plate and the first series connection metal plate or the second series connection metal plate The second connecting screw.
The battery connection terminal mechanism according to claim 6, wherein the fixing plate comprises a plate main body, and four terminal connection holes opened on the plate main body, and the four terminal connection holes are connected to the The positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal correspond to;

The terminal body is inserted through the terminal connection hole, and the terminal connection base is detachably connected to the board body by a third connecting screw.
The battery terminal mechanism according to claim 5, wherein the four terminals respectively connected to the positive charging terminal, the negative charging terminal, the positive discharging terminal, and the negative discharging terminal The cables are arranged longitudinally or/and laterally, and the four cables are arranged in a staggered manner.
A power battery system, characterized by comprising a power battery box, and the battery terminal mechanism according to any one of claims 1 to 8 connected to the power battery box;

The power battery box includes a battery compartment, and at least one battery module structure arranged in the battery compartment. The charging terminal assembly and the discharging terminal assembly of the battery terminal mechanism are electrically connected to the battery module structure. connection.
An electric vehicle, characterized by comprising the power battery system according to claim 9.