CN210837902U - Battery module with electrode output at same side - Google Patents

Abstract

The utility model discloses a battery module of homonymy electrode output, including a plurality of square batteries of arranging in proper order, the anodal and the negative pole of battery are located the top and are listed in the both sides of battery array orientation axis separately. Along the battery arrangement direction, the positive and negative poles of the 1 st battery and the opposite side of the 2 nd battery are arranged, and then the positions of the positive and negative poles of every two batteries are changed. The positive electrode of the 1 st battery is connected with the positive output electrode of the battery module, and the negative electrode of the 2 nd battery is connected with the negative output electrode of the battery module; the negative pole of the 1 st battery is connected with the positive pole of the 3 rd battery, the positive pole of the 2 nd battery is connected with the negative pole of the 4 th battery, and so on. The utility model discloses the bus connection mode of series connection battery can reserve sufficient space for the monitoring circuit board in the battery module to when constituteing the module package, the low voltage circuit that monitoring circuit connects can separate with the generating line high pressure pencil that the positive negative pole of battery module is connected, thereby the bus that significantly reduces is to the electromagnetic interference of low voltage circuit.

Description

Battery module with electrode output at same side

Technical Field

The utility model relates to a square battery's battery module assembly.

Background

In the field of electric energy storage, batteries are the smallest energy storage units. Because of technical reasons, the output power of a single battery is low, therefore, a plurality of square batteries need to be connected in series to form a battery module, then a plurality of battery modules form a module group, and finally a plurality of module groups form a battery energy storage module. In the prior art, the positive and negative electrodes of the batteries in the battery module are usually arranged in a staggered manner, that is, the positive and negative electrodes of two adjacent batteries are opposite. Under the situation, when the batteries in the battery module are connected in series, the positive electrode of the 1 st battery is connected with the positive output electrode of the battery module, the negative electrode of the 1 st battery is connected with the positive electrode of the 2 nd battery, the positive electrode of the 2 nd battery is connected with the negative electrode of the 3 rd battery, and so on, the positive electrode of the ith battery is connected with the negative electrode of the (i + 1) th battery, the negative electrode of the last battery is finally left, and the negative electrode of the last battery is connected with the negative output electrode of the battery module. With this arrangement of the batteries, naturally, the positive and negative output electrodes of the battery module are located at both ends of the battery module, respectively, that is, the output electrodes of the battery module are located on opposite sides. The advantage of this cell arrangement is that because the positive electrode of the ith cell is close to the negative electrode of the (i + 1) th cell, the bus bar required by the positive electrode of the ith cell to be connected with the negative electrode of the (i + 1) th cell is very short, the bus bars are arranged on both sides, and the problem of interleaving among the bus bars does not exist.

However, as the battery energy storage module is further developed, in order to improve the utilization efficiency of the battery, it is required to implement fine management on the battery module. In this case, the battery module is required to be connected with a monitoring circuit. Compared with the bus connected with the positive electrode and the negative electrode of the battery and the bus connected with the positive electrode and the negative electrode of the battery module, the circuit connected with the monitoring circuit is a low-voltage circuit. Under the condition that the output electrodes of the battery modules are positioned on different sides, when a plurality of battery modules are assembled into the module group, buses connected with the positive and negative electrodes of the battery modules are liable to be staggered with a low-voltage line connected with a monitoring circuit of the battery modules, so that electromagnetic interference is generated on the monitoring circuit of the battery modules and the low-voltage line connected with the monitoring circuit when the high-voltage line of the buses transmits strong current, and the normal work of the monitoring circuit of the battery modules and the low-voltage line connected with the monitoring circuit is influenced.

On the other hand, when the battery energy storage module is applied to the field of automobiles, the battery module is required to have certain physical and mechanical properties in the aspects of impact resistance, collision resistance, extrusion resistance, vibration resistance and the like so as to meet the environment of vibration and possible collision of the automobiles in the driving process. Under the prior art, the assembly of battery module mainly has two kinds of modes: the first is a ribbon fixing mode, and the second is a welding fixing mode.

Under the ribbon fixed mode, the mutual fixation between each battery in the battery module is realized through the winding of ribbon. The problem of low physical impact strength exists under this kind of fixed mode, and on the other hand, the material of ribbon itself is difficult for anticorrosive and ageing resistance, and the reliability can the difference.

In a welding fixing mode, each battery of the battery module is fixed in a port-shaped frame defined by the end plates and the side plates through welding between the end plates and the side plates. The welding fixing mode has the following defects: firstly, the requirement on the assembly precision is high, and the problem of an elastic buffer space does not exist in the welded port-shaped frame; secondly, the welding process is complex, for example, the aluminum alloy section can not be welded even in the open air; thirdly, the welding process is complex, the welding yield is low, and the end plate and the side plate which are failed to be welded are directly scrapped and cannot be reworked, so that the production and manufacturing cost is high; fourthly, after welding, cracks which cannot be detected by ultrasonic waves may exist in the welding joints between the end plates and the side plates, the cracks do not have any problem under normal conditions, but in the use environment that the automobile is continuously vibrated and impacted, the cracks gradually expand to form cracks, and finally the welding joints break, so that the whole battery module is scattered.

Disclosure of Invention

The utility model discloses the problem that will solve:

1. when the battery modules output by the opposite side electrodes are assembled into the module group, buses connected with the positive and negative electrodes of the battery modules are liable to be staggered with a low-voltage line connected with a monitoring circuit of the battery modules, so that electromagnetic interference is generated on the monitoring circuit of the battery modules and the low-voltage line connected with the monitoring circuit when the high-voltage line of the buses transmits strong current, and the normal work of the monitoring circuit of the battery modules and the low-voltage line connected with the monitoring circuit is influenced;

2. the complexity of the assembly of the battery module is reduced, and the fixed physical performance of the battery module is improved.

In order to solve the above problem, the utility model discloses a scheme as follows:

a battery module with electrode output at the same side comprises a plurality of square batteries which are sequentially arranged in sequence, wherein the positive electrode and the negative electrode of each battery are positioned at the top and are respectively arranged at two sides of a central axis in the arrangement direction of the batteries; along the arrangement direction of the batteries, the positive electrode of the 1 st battery and the negative electrode of the 2 nd battery are positioned on the same side of the central axis, the positive electrodes of the 2i th battery and the 2i +1 th battery are positioned on the same side of the central axis, and the positive electrode of the 2i +1 th battery and the negative electrode of the 2i +2 th battery are positioned on the same side of the central axis; the positive electrode of the 1 st battery is connected with the positive output electrode of the battery module through a bus bar, the negative electrode of the 2 nd battery is connected with the negative output electrode of the battery module through a bus bar, the positive electrode of the 2i th battery is connected with the negative electrode of the 2i +2 th battery through a bus bar, and the negative electrode of the 2i-1 st battery is connected with the positive electrode of the 2i +1 st battery through a bus bar, wherein i is 1,2,3 and …; if the number of the batteries is 2N, connecting the positive electrode of the 2N-th battery with the negative electrode of the 2N-1-th battery along the arrangement direction of the batteries; if the number of the batteries is 2N +1, the cathode of the 2N +1 th battery is connected with the anode of the 2N th battery along the arrangement direction of the batteries.

Further, the bus bars comprise bridge bus bars and C-shaped bus bars; a bus connected with the cathode of the 2i-1 battery and the anode of the 2i +1 battery and a bus connected with the anode of the 2i battery and the cathode of the 2i +2 battery respectively adopt a bridge bus and a C-shaped bus; the middle of the bridge type bus is provided with a gap bridge connecting part which protrudes upwards; one end of the C-shaped bus bar is inserted below the gap bridge connecting part to be connected with the electrode of the battery.

Further, the bus bar comprises an inner bridge type bus bar and a C-shaped bus bar; the bus connected with the cathode of the 2i-1 battery and the anode of the 2i +1 battery and the bus connected with the anode of the 2i battery and the cathode of the 2i +2 battery respectively adopt an inner bridge type bus and a C-shaped bus; the inner bridge type bus is formed by bending a C-shaped bus in a Z shape and comprises two electrode connecting parts and an inner bridge connecting part; the two electrode connecting parts are respectively used for connecting the positive electrode and the negative electrode; the electrode connecting part and the inner bridge connecting part are connected through a Z-shaped bending part.

Further, the bus bar comprises an outboard bus bar and a C-shaped bus bar; the bus connected with the cathode of the 2i-1 battery and the anode of the 2i +1 battery and the bus connected with the anode of the 2i battery and the cathode of the 2i +2 battery respectively adopt an outer bus and a C-shaped bus; the outer side type bus is formed by bending a C-shaped bus in an L shape and comprises two horizontal plane electrode parts and an outer side surface connecting part; the two horizontal electrode parts are respectively used for connecting the anode and the cathode; the outer side surface connecting part is vertical to the horizontal surface electrode part, so that the outer side surface connecting part of the outer side type bus is attached to the side surface of the battery pack of the battery module, and the C-shaped bus is located on the top surface of the battery pack of the battery module.

Furthermore, the battery is arranged on the bottom plate and is arranged in a port-shaped frame defined by two end plates and two side plates, and a wiring harness isolation plate is arranged at the top of the battery; the wire harness isolation plate is a plate-shaped body and is provided with a battery electrode hole; the positions of the battery electrode holes are matched with the positions of the positive and negative electrodes of the arranged batteries; the bus is erected on the wire harness isolation plate and is connected with the positive electrode and the negative electrode of the battery through the battery electrode hole; the wire harness isolation plate is provided with a plurality of wire isolation inner baffles, and two sides of the wire harness isolation plate are respectively provided with a wire isolation outer plate; each bus is isolated independently through an isolation inner baffle; the partition line main flat plate is separated by a partition line inner partition plate in the middle of the wiring harness partition plate; a flexible circuit board is arranged on the main isolation flat plate; the flexible circuit board is connected with the bus through the electrode connecting lug.

Furthermore, the end plate is a plate body consisting of an end plate main body and two fixed upright posts; the two fixed upright posts are vertical and are respectively positioned at two sides of the end plate; the fixed upright post is provided with an end plate mounting hole along the vertical direction; a plurality of flat plate grooves are arranged on the fixed upright post; the flat plate groove is horizontal, and the fixed upright posts are cut into a plurality of upright post sections; the side plate comprises a side plate body and two upright post connecting parts; the two upright post connecting parts are respectively positioned at two ends of the side plate body; the upright post connecting part comprises an upright post cladding plate, an upper clamping plate, a lower clamping plate and a plurality of middle clamping plates; the upper clamping plate, the lower clamping plate and the middle clamping plate are positioned on the inner side of the upright post cladding plate and are provided with mounting holes; two stand cladding plates at curb plate both ends are the cladding respectively on the cylinder of two fixed posts of two end plate homonymies to go up the cardboard card at the top of fixed post, lower cardboard card is in the bottom of fixed post, and each middle cardboard is blocked respectively in the flat plate inslot that corresponds separately, goes up cardboard, lower cardboard and the mounting hole on the cardboard in the middle of and the same vertical axle center of end plate mounting hole on the fixed post.

Further, a heat-conducting silica gel pad is arranged on the bottom plate; the battery is arranged on the heat-conducting silica gel pad.

Furthermore, the batteries are separated by a silica gel buffer pad.

Further, the device also comprises an upper cover plate; a hasp mechanism is arranged between the upper cover plate and the wire separating outer side plate; the upper cover plate is buckled on the wiring harness isolation plate through the hasp mechanism and covers the flexible circuit board and the buses.

Further, an end insulating plate is arranged between the end plate and the battery; a double-output-electrode supporting piece is arranged on the outer side of an end insulating plate between the end plate and the 1 st battery; the double-output-electrode supporting piece is lapped on the end plate and comprises a supporting piece base and a partition board vertically arranged on the supporting piece base; the separator vertically arranged on the support base divides the double-output-electrode support into a positive electrode supporting part and a negative electrode supporting part; the positive electrode of the 1 st battery is connected with the positive electrode supporting part through the positive electrode bus bar; the negative electrode of the 2 nd cell is connected to the negative electrode support portion through a negative electrode bus bar.

Further, a side insulating plate is arranged on the inner side of the side plate body.

Further, the end insulating plate comprises an end insulating plate supporting plate and an end insulating plate insulating sheet attached to the inner side of the end insulating plate supporting plate; the end insulating plate supporting plate is provided with vertical oblique bending connecting parts at the positions close to the edges of the two sides of the end insulating plate supporting plate, and the end insulating plate supporting plate is divided into a middle main supporting plate and edge supporting plates at the two sides by the oblique bending connecting parts.

The technical effects of the utility model are as follows:

1. the utility model discloses when the battery module of homonymy electrode output assembled into module group, the low-voltage line that the monitoring circuit of battery module was connected can separate with the generating line high-pressure pencil that the positive negative pole of battery module was connected to can make module package high-pressure pencil and low-pressure pencil walk the line layering, thereby make module group walk the line succinct, reduced the use of power generating line, and reduced the electromagnetic interference of high-pressure pencil to low-pressure pencil greatly.

2. The utility model discloses the generating line length that is connected between each battery differs little in the battery module of homonymy electrode output, and each bus resistance is close, therefore the generating line calorific capacity that each battery accepted is balanced to avoid leading to generating heat unevenly because of the generating line length differs, thereby lead to each battery to receive the generating line to generate heat unevenly, and then lead to the battery safety problem that battery temperature difference probably causes, also can avoid the uneven problem of voltage difference between the battery.

3. The bus connection mode of the series batteries in the battery module can reserve enough space for the monitoring circuit board.

4. The battery module side plate is provided with the clamping plates, the lower clamping plate is provided with the clamping plates, the middle clamping plate is provided with the end plate fixing stand column, the bolts are fixed, the physical performance of the battery module is guaranteed, the welding process is avoided, the assembly process of the battery module is simplified, the assembly precision is improved, the end plate and the side plate are convenient to disassemble, and the battery module is convenient to maintain in the later period.

5. The lower cardboard card of battery module curb plate is in the below of end plate stand and built on stilts end plate main part to avoid the direct contact of end plate and module package base, thereby reduce the friction between end plate bottom and the module package base, and reduce the shearing force that receives in the end plate use.

6. The end insulating plate has an elastic structure, so that the requirement on assembly precision is reduced, and the elastic end insulating plate can play a role in buffering when the battery module is collided, so that the collision to the battery is reduced.

Drawings

Fig. 1 is a schematic diagram of battery connection of the battery module with same-side electrode output according to the present invention.

Fig. 2 is the wiring schematic diagram of the battery module group module with same side electrode output of the present invention.

Fig. 3 is a schematic diagram of cell connection at the output of the opposite side electrode, which is a comparison of fig. 1.

Fig. 4 is a schematic wiring diagram of a battery module assembly with opposite side electrode outputs, which is a comparison diagram of fig. 2.

Fig. 5 is a schematic diagram of battery connection of a battery module with same-side electrode output as compared with the embodiment of the present invention.

In fig. 1 to 5, "+" denotes a positive electrode and "-" denotes a negative electrode. In fig. 1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7, 1-8 are respectively 8 batteries sequentially arranged in sequence. The black wide lines in fig. 1, 3, and 5 indicate bus bars. The black wide lines in fig. 2 and 4 are power bus bars. In fig. 2, 900 is a battery module according to an embodiment of the present invention.

Fig. 6 is an exploded view of the embodiment, fig. 7 is an overall perspective view, and fig. 8 to 22 are partial views. Wherein the content of the first and second substances,

fig. 8 is a connection structure diagram of a battery and a bus bar according to an embodiment of the present invention.

Fig. 9 and fig. 10 are connection structure diagrams between the battery, the bus bar, the line isolation board and the flexible circuit board according to the embodiment of the present invention, wherein fig. 10 hides the battery, the bottom board and the port-shaped frame.

Fig. 11 is a structural diagram of the line isolation board according to the embodiment of the present invention.

Fig. 12 is a structural diagram of a flexible circuit board according to an embodiment of the present invention.

Fig. 13 is a matching structure diagram of the C-shaped bus bar and the bridge bus bar according to the embodiment of the present invention.

Fig. 14 and 15 are a perspective view and a rear view of an end plate according to an embodiment of the present invention, respectively.

Fig. 16 and 17 are perspective structural views of a side plate according to an embodiment of the present invention, in which fig. 16 is an inside view and fig. 17 is an outside view.

Fig. 18 is a fitting structure diagram of a side plate and an end plate according to an embodiment of the present invention.

Fig. 19 is a perspective view of the bottom plate according to the embodiment of the present invention.

Fig. 20 is a structural diagram of a dual-output-electrode support member on an insulating plate according to an embodiment of the present invention.

Fig. 21 is a schematic view of a bending structure of the end insulating plate support plate according to the embodiment of the present invention.

Fig. 22 is a perspective view of the upper cover plate according to the embodiment of the present invention.

Fig. 23 is a matching structure diagram of the inner bridge type bus bar and the C-shaped bus bar of the embodiment of the present invention.

Fig. 24 is a schematic structural view of an outside bus bar according to an embodiment of the present invention.

In fig. 6 to 22, 1 is a battery, 21 is a positive electrode bus bar, 22 is a negative electrode bus bar, 23 is a direct connection bus bar, 24 is a bridge bus bar, 241 is a bridge connection portion, 25 is a C-shaped bus bar, 26 is an inner bridge bus bar, 261 is an electrode connection portion, 262 is an inner bridge connection portion, 27 is an outer side bus bar, 271 is a horizontal surface electrode portion, 272 is an outer side surface connection portion, 31 is a harness spacer, 311 is a spacer main plate, 312 is a spacer outer plate, 313 is a battery electrode hole, 314 is a spacer inner plate, 315 is a flexible circuit board positioning post, 316 is a snap projection, 32 is a flexible circuit board, 321 is a flexible circuit board main body, 322 is an installation positioning hole, 323 is an electrode tab, 34 is a silicone cushion, 35 is an end insulating plate, 351 is an end insulating plate supporting plate, 3511 is a diagonal bending connection portion, 3512 is an intermediate main supporting plate, 3513 is an edge supporting plate, 352 is an end insulating plate, 353 is an output electrode support plate, 41 is an end plate, 411 is an end plate main body, 412 is an end plate lightening hole, 413 is a fixed upright, 414 is an end plate mounting hole, 415 is a flat plate groove, 42 is a side plate, 421 is a side plate body, 422 is a side insulating plate, 423 is an upright cladding plate, 424 is an upper clamping plate, 425 is a lower clamping plate, 426 is a middle clamping plate, 43 is a bottom plate, 431 is a bottom plate horizontal part, 432 is a bottom plate bending part, 44 is an upper cover plate, 441 is a hasp hole, 45 is a double-output electrode support, 451 is a support base, 452 is an anode support, 453 is a cathode support, 490 is a battery module assembling hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a battery module with electrode output at the same side comprises a plurality of square batteries sequentially arranged in sequence. The number of the batteries in the figure 1 is 8, and the batteries are 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 1-7 and 1-8 respectively. Among the 8 batteries, the battery 1-1 is the 1 st battery, the battery 1-2 is the 2 nd battery, and so on. Those skilled in the art will appreciate that the number of cells in the battery module may be 4, 5, 6, 7, 9, etc. The positive electrode and the negative electrode of each battery are positioned on the top of the battery and are respectively arranged on two sides of the central axis in the arrangement direction of the batteries.

The arrangement mode among the battery module batteries is as follows:

along the battery array orientation, the positive pole of the 1 st battery and the negative pole of the 2 nd battery are located the homonymy of axis, and the positive pole of the 2i th battery and the 2i +1 st battery are located the axis homonymy, and the positive pole of the 2i +1 st battery and the negative pole of the 2i +2 nd battery are located the axis homonymy. That is, the positive and negative electrodes of the 1 st cell are disposed opposite to the 2 nd cell, the positive and negative electrodes of the 2i th cell are disposed on the same side as the 2i +1 th cell, and the positive and negative electrodes of the 2i +1 th cell are disposed opposite to the 2i +2 th cell, where i is 1,2,3, …. In brief, the positive and negative electrodes of the 1 st battery and the opposite side of the 2 nd battery are arranged, and then the positions of the positive and negative electrodes of every two batteries are changed. Specifically, in fig. 1, the positive and negative electrodes of the battery 1-1 are disposed opposite to the opposite sides of the battery 1-2; the anode and the cathode of the battery 1-2 are arranged on the same side as the battery 1-3, the anode and the cathode of the battery 1-3 are arranged on the opposite side from the battery 1-4, the anode and the cathode of the battery 1-4 are arranged on the same side as the battery 1-5, the anode and the cathode of the battery 1-5 are arranged on the opposite side from the battery 1-6, the anode and the cathode of the battery 1-6 are arranged on the same side as the battery 1-7, and the anode and the cathode of the battery 1-7 are arranged on the opposite side.

Based on the above arrangement of the batteries, the battery module has the following connection modes in series connection:

the positive electrode of the 1 st battery is connected with the positive output electrode of the battery module through a bus, the negative electrode of the 2 nd battery is connected with the negative output electrode of the battery module through the bus, the positive electrode of the 2i th battery is connected with the negative electrode of the 2i +2 th battery through the bus, and the negative electrode of the 2i-1 st battery is connected with the positive electrode of the 2i +1 st battery through the bus, wherein i is 1,2,3 and …; if the number of the batteries is 2N, the anode of the 2N battery is connected with the cathode of the 2N-1 battery along the arrangement direction of the batteries; if the number of the batteries is 2N +1, the cathode of the 2N +1 th battery is connected to the anode of the 2N th battery along the battery arrangement direction. Specifically, in fig. 1, the positive electrode of the battery 1-1 is connected to the positive output electrode of the battery module, the negative electrode of the battery 1-2 is connected to the negative output electrode of the battery module, the positive electrode of the battery 1-2 is connected to the negative electrode of the battery 1-4, the positive electrode of the battery 1-4 is connected to the negative electrode of the battery 1-6, and the positive electrode of the battery 1-6 is connected to the negative electrode of the battery 1-8; the negative pole of the battery 1-1 is connected with the positive pole of the battery 1-3, the negative pole of the battery 1-3 is connected with the positive pole of the battery 1-5, and the negative pole of the battery 1-5 is connected with the positive pole of the battery 1-7. The number of the batteries in the figure 1 is even, 2N is satisfied, and the positive pole of the 2N-th battery is connected with the negative pole of the 2N-1-th battery, which is equivalent to the positive pole of the batteries 1-8 in the figure 1 is connected with the negative pole of the batteries 1-7. If the number of batteries is odd, that is, 2N +1 batteries are satisfied, referring to fig. 1, the batteries 1 to 8 in fig. 1 are removed, and the remaining 7 batteries satisfy 2N +1 batteries, at this time, the connecting line between the positive electrode of the batteries 1 to 6 and the negative electrode of the batteries 1 to 8 is also removed, and the negative electrode of the 2N +1 battery is connected to the positive electrode of the 2N battery, which is equivalent to the negative electrode of the batteries 1 to 7 being connected to the positive electrodes of the batteries 1 to 6.

Obviously, in the case where the number of the batteries is 4, there are: the 1 st battery and the 2 nd battery are arranged on different sides of the positive and negative poles, the 2 nd battery and the 3 rd battery are arranged on the same side of the positive and negative poles, and the 3 rd battery and the 4 th battery are arranged on different sides of the positive and negative poles; the positive pole of the 1 st battery is connected with the positive output pole of the battery module through the bus, the negative pole of the 2 nd battery is connected with the negative output pole of the battery module through the bus, the positive pole of the 2 nd battery is connected with the negative pole of the 4 th battery through the bus, the negative pole of the 1 st battery is connected with the positive pole of the 3 rd battery through the bus, and the negative pole of the 3 rd battery is connected with the positive pole of the 4 th battery through the bus.

Obviously, if the number of the batteries is odd, the bus bar connecting the cathode of the 2N +1 th battery and the anode of the 2N-th battery and the bus bar connecting the anode of the 2N +1 th battery and the cathode of the 2N-1 th battery are staggered. Therefore, the number of the batteries in the preferred battery module of the present invention is even.

It should be noted that, in the above-mentioned series connection, the positive electrode of the 1 st battery is connected to the positive output electrode of the battery module, and the negative electrode of the 2 nd battery is connected to the negative output electrode of the battery module, and those skilled in the art understand that this connection mode may be changed as well: the negative pole of the 1 st battery is connected with the negative output pole of the battery module, the positive pole of the 2 nd battery is connected with the positive output pole of the battery module, and accordingly, the negative pole of the 2 i-th battery is connected with the positive pole of the 2i +2 nd battery through a bus bar, and the positive pole of the 2i-1 st battery is connected with the negative pole of the 2i +1 st battery through a bus bar, wherein i is 1,2,3 and …. This simple post-replacement connection is substantially no different from the pre-replacement connection.

When the battery module with the same-side electrode output is assembled into a module group, as shown in fig. 2. In fig. 2, 900 is the battery module of the present invention outputting from the same side electrode, and the module group is composed of 10 battery modules. 10 battery module divide into two sets ofly according to 5 a set of, and the battery module of group arranges in proper order, and two sets of battery module sets up relatively, and the motor of homonymy output is located the inboard, and at this moment, when establishing ties between the battery module, the power bus who connects the battery module all is located the inboard of battery module. In this specification, a bus connected between the battery modules is referred to as a power bus. As compared with the battery module shown in fig. 3, the battery module shown in fig. 4 has an opposite-side electrode output. Fig. 3 shows a typical connection mode of a battery module with opposite-side electrode output, in which the positive and negative electrodes of 8 batteries are arranged in a staggered manner, the positive electrode of the 1 st battery is connected to the positive output electrode of the battery module, the negative electrode is connected to the positive electrode of the 2 nd battery, the positive electrode of the 2 nd battery is connected to the negative electrode of the 3 rd battery, and so on, the positive electrode of the ith battery is connected to the negative electrode of the (i + 1) th battery until the last battery, that is, the negative electrode of the 8 th battery is connected to the negative output electrode of the battery module. The positive output pole and the negative output pole of the battery module are respectively positioned at two ends of the battery module. When the battery modules output from the opposite-side electrodes are assembled into a module, and the battery modules are connected in series, as shown in fig. 4, some of the power bus bars connecting the battery modules are located inside and some of the power bus bars are located outside. The power bus located at the outer side is staggered with a low-voltage line connected with a monitoring circuit of the battery module, so that serious electromagnetic interference is generated on the low-voltage line. In the connection mode shown in fig. 2 of this embodiment, the low-voltage line connected to the monitoring circuit of the battery module runs outside the module without crossing the power bus connected to the battery module, and is far away from the power bus connected to the battery module, so that the electromagnetic interference generated by the power bus connected to the battery module on the low-voltage line connected to the monitoring circuit is very small, thereby greatly reducing the electromagnetic interference on the monitoring circuit and the low-voltage line connected to the monitoring circuit.

Fig. 5 is a schematic diagram of bus connection between the batteries with the same side electrode output in the positive and negative electrode staggered arrangement mode of 8 batteries. In such a bus bar connection method, a bus bar may cross two cells: a bus bar between the cathode of the 1 st cell and the anode of the 4 th cell spans the 2 nd cell and the 3 rd cell; a bus bar between the positive electrode of the 3 rd cell and the negative electrode of the 6 th cell spans the 4 th cell and the 5 th cell; the bus bar between the negative pole of the 5 th cell and the positive pole of the 8 th cell spans the 6 th cell and the 7 th cell. Compared to the bus bar described above that spans two cells, the bus bar connected between the positive electrode of the 2 nd cell and the negative electrode of the 3 rd cell, the bus bar connected between the negative electrode of the 4 th cell and the positive electrode of the 5 th cell, and the bus bar connected between the positive electrode of the 6 th cell and the negative electrode of the 7 th cell is very short. In other words, although the connection mode realizes the output of the electrodes on the same side of the battery module, the length difference of the connected buses is large and not balanced enough. In this connection method, because the lengths of the connected buses are not uniform, the resistances of the connected buses between the batteries are also different greatly, so that the heat generation amount of the buses is not uniform, which means that the batteries at different positions are heated unevenly, and the temperature difference of the batteries is large. Under the condition that the battery module is applied to large current of the environment, the problem of temperature difference between batteries is easy to cause battery damage. In addition, the large difference in resistance between the bus bars connected between the batteries also causes the voltage difference between the batteries to be uneven, which is also required to be avoided in the battery module. In the embodiment of fig. 1, the bus bars have different connection lengths, so that the problem of temperature difference between the batteries and the problem of uneven voltage difference between the batteries do not exist.

The battery module of the present embodiment is assembled as shown in fig. 5 and 6. The battery module further comprises a port-shaped frame defined by two end plates 41 and two side plates 42, a bottom plate 43, an upper cover plate 44 and a double-output-electrode support 45. The 8 batteries 1 are arranged on the bottom plate 43, and the silicone cushion 34 is provided between the adjacent batteries 1. The top of 8 batteries 1 arranged is provided with a harness isolation plate 31, and an upper cover plate 44 is buckled on the harness isolation plate 31 through a buckle mechanism. The 8 batteries 1 are arranged in a T-shaped frame, wherein the end plates 41 are respectively positioned at two ends of the arrangement direction of the batteries 1, and the side plates 42 are positioned at the side edges of the arrangement direction of the batteries 1. End insulating plates 35 are provided between the end plates 41 and the cells 1. A dual-output-electrode support 45 is located at one end of the battery module.

As shown in fig. 6 and 8, the bus bars connected in series between the 8 batteries include a positive bus bar 21, a negative bus bar 22, a direct-connection bus bar 23, a bridge bus bar 24, and a C-shaped bus bar 25. Wherein, the negative bus 22 is in L shape; as shown in fig. 13, the bridge busbar 24 has a bridge connecting portion 241 in the middle thereof, which is upwardly arched, and the C-shaped busbar 25 is C-shaped. Bus bar, i.e., busbar. In this embodiment, each bus bar is made of copper bars. The series connection among the 8 batteries is specifically as follows: the positive electrode of the 1 st battery is connected with the positive output electrode on the double-output-electrode supporting piece 45 through the positive electrode bus bar 21, and the negative electrode of the 2 nd battery is connected with the negative output electrode on the double-output-electrode supporting piece 45 through the negative electrode bus bar 22; the negative electrode of the 1 st battery and the positive electrode of the 3 rd battery, the negative electrode of the 3 rd battery and the positive electrode of the 5 th battery, and the negative electrode of the 5 th battery and the positive electrode of the 7 th battery are respectively connected through three C-shaped bus bars 25; the anode of the 2 nd battery and the cathode of the 4 th battery, the anode of the 4 th battery and the cathode of the 6 th battery, and the anode of the 6 th battery and the cathode of the 8 th battery are respectively connected through three bridge buses 24; the positive pole of the 8 th battery and the negative pole of the 7 th battery are connected through a direct-connection bus 23.

Obviously, the positive pole of the 2 nd battery is blocked by the positive pole of the 2 nd battery and can not be directly connected by adopting the direct connection bus bar between the negative pole of the 1 st battery and the positive pole of the 3 rd battery due to the separation, and similarly, the positive pole of the 2 nd battery and the negative pole of the 4 th battery are blocked by the positive pole of the 3 rd battery and can not be directly connected by adopting the direct connection bus bar due to the separation of the positive pole of the 3 rd battery. One reference connection is made by using the bus bar in fig. 1, which runs inside between the negative pole of the 1 st cell and the positive pole of the 3 rd cell, and runs outside between the positive pole of the 2 nd cell and the negative pole of the 4 th cell, so that the bus bar between the negative pole of the 1 st cell and the positive pole of the 3 rd cell and the bus bar between the positive pole of the 2 nd cell and the negative pole of the 4 th cell are staggered. However, in practical application, the bus bar is made of copper bars and has a certain width, the positive and negative electrodes of the battery are close to the edge of the battery module, and the bus bar in the outer direction is not arranged in enough space on the outer side. For this purpose, in the present embodiment, the bridge busbar 24 and the C-shaped busbar 25 are connected alternately, and as shown in fig. 13, the bridge busbar 24 is provided with a bridge connecting portion 241 which is arched upward in the middle. When the bridge busbar 24 connects the positive electrode of the 2 nd cell and the negative electrode of the 4 th cell, the bridge connecting portion 241 spans over the positive electrode of the 3 rd cell and leaves a space for the C-shaped busbar 25 to connect with the positive electrode of the 3 rd cell below the bridge connecting portion 241; the C-shaped bus bar 25 bypasses the anode of the 2 nd battery through the inner side folding direction, and the two ends are respectively connected with the cathode of the 1 st battery and the anode of the 3 rd battery. When the positive electrode of the 3 rd cell is connected to the C-shaped bus bar 25, the end of the C-shaped bus bar 25 connected to the positive electrode of the 3 rd cell is inserted below the bridge connection portion 241. In the same way, namely, the bus connected with the cathode of the 2i-1 battery and the anode of the 2i +1 battery and the bus connected with the anode of the 2i battery and the cathode of the 2i +2 battery respectively adopt a bridge bus 24 and a C-shaped bus 25. That is, the bus bar to which the negative electrode of the 2i-1 th cell and the positive electrode of the 2i +1 th cell are connected employs a bridge bus bar 24, and the bus bar to which the positive electrode of the 2 i-th cell and the negative electrode of the 2i +2 th cell are connected employs a C-shaped bus bar 25; alternatively, the bus bar to which the negative electrode of the 2i-1 st cell and the positive electrode of the 2i +1 st cell are connected may be a C-shaped bus bar 25, and the bus bar to which the positive electrode of the 2 i-th cell and the negative electrode of the 2i +2 nd cell are connected may be a bridge-type bus bar 24.

It should be noted that, since the height of the bridge connecting portion 241 is not high, in order to improve the insulating effect between the bridge busbar 24 and the C-shaped busbar 25, in this embodiment, the lower portion of the bridge connecting portion 241 of the bridge busbar 24 is coated with epoxy resin as an insulating layer in advance, so that a layer of epoxy resin is separated between the C-shaped busbar and the bridge busbar as an insulating layer.

As shown in fig. 9 and 10, each bus bar is bridged on the harness isolation plate 31, and the bus bar is isolated from the battery by the harness isolation plate 31. The harness isolation plate 31 is provided on the top of the battery. As shown in fig. 11, the harness isolation plate 31 is a plate-like body, and is provided with a battery electrode hole 313 and a plurality of partition inner baffles 314, and partition outer plates 312 are provided on both sides thereof. The positions of the battery electrode holes 313 match the positions of the positive and negative electrodes of the arranged batteries. Specifically, in the present embodiment, 8 batteries correspond to 16 positive and negative electrodes, and therefore, the wire harness partition plate 31 corresponds to 16 battery electrode holes 313. Each bus is erected on the wire harness isolation plate 31, connected with the corresponding positive and negative electrodes of the battery through the battery electrode hole 313, and fixed with the corresponding positive and negative electrodes of the battery. Each bus bar is individually isolated by an inter-bay partition 314, i.e., the inter-bay partition 314 serves to isolate each bus bar in a horizontal plane such that each bus bar is located in a horizontal plane within an individual space separated by the corresponding inter-bay partition 314. Since the bus bars are arranged on both sides, the partition main plate 311 is isolated by the partition inner partition 314 in the middle of the harness isolation plate 31, that is, in a range close to the central axis. A flexible circuit board positioning column 315 is disposed in the main isolation plate 311, and a flexible circuit board 32 is disposed through the flexible circuit board positioning column 315. The flexible circuit board 32 is the aforementioned monitoring circuit, and in this embodiment, is used for monitoring the voltage of each battery. As shown in fig. 12, the flexible circuit board 32 includes a flexible circuit board main body 321 and a plurality of electrode coupling lugs 323. The flexible circuit board main body 321 is provided with a mounting positioning hole 322. The position of the mounting positioning hole 322 is matched with the flexible circuit board positioning column 315 on the partition line main flat plate 311, and the flexible circuit board 32 is arranged on the partition line main flat plate 311 through the clamping position between the mounting positioning hole 322 and the flexible circuit board positioning column 315. The electrode connecting lug 323 is provided at the edge of the flexible circuit board main body 321 for connecting the electrodes of the respective batteries. In this embodiment, since 8 batteries are connected by 9 bus bars, there are 9 electrode connection lugs 323 on the flexible circuit board 32 in this embodiment, which correspond to the 9 bus bars respectively. The flexible circuit board 32 is connected to the corresponding bus bars through the 9 electrode connecting lugs 323, so as to connect the positive and negative electrodes of the 8 batteries. The wire separating outer plates 312 are located at both side edges of the wire harness isolation plate 31, and the top is provided with a plurality of snap protrusions 316. As shown in fig. 22, the upper cover 44 is provided with a snap hole 441. The snap hole 441 is matched with the snap projection 316 on the partition line outer side plate 312, and forms a snap mechanism therewith. Thus, the upper cover 44 is fastened to the harness isolation plate 31 by the engagement between the fastening hole 441 and the fastening projection 316, and covers the flexible circuit board 32 and the bus bars.

As shown in fig. 14 and 15, the end plate 41 is a plate body composed of an end plate main body 411 and two fixing posts 413. The two fixed columns 413 are vertical and are respectively located at both sides of the end plate 41. The fixed post 413 is provided with an end plate mounting hole 414 in the vertical direction. The fixed upright 413 is provided with a plurality of flat grooves 415. The plate slot 415 is horizontal and cuts the fixed post 413 into post segments. Each column section is connected to the end plate body 411. The end plate main body 411 is provided with a vertical end plate lightening hole 412.

As shown in fig. 16 and 17, the side plate 42 includes a side plate body 421 and two pillar connecting portions. The two pillar connecting portions are respectively located at two ends of the side plate body 421. The mast connection includes a mast cladding plate 423, an upper pallet 424, a lower pallet 425, and a plurality of intermediate pallets 426. The upper clamping plate 424, the lower clamping plate 425 and the middle clamping plate 426 are located on the inner side of the upright cladding plate 423 and are provided with mounting holes.

The mating connection between the end plate 41 and the side plate 42 is shown in fig. 18. The number and position of the middle clamping plates 426 on the side plates 42 are matched with the flat plate grooves 415 on the end plate 41, and the space between the upper clamping plate 424 and the lower clamping plate 425 is matched with the height of the fixed upright posts 413 on two sides of the end plate 41. Two column cladding plates 423 at two ends of the side plate 42 respectively clad on the cylindrical surfaces of two fixed columns 413 at the same side of the two end plates 41, an upper clamping plate 424 is clamped at the top of the fixed column 413, a lower clamping plate 425 is clamped at the bottom of the fixed column 413, and middle clamping plates 426 are respectively clamped in corresponding flat plate grooves 415. The mounting holes of the upper clamping plate 424, the lower clamping plate 425 and the middle clamping plate 426 are coaxial with the end plate mounting hole 414 of the fixed upright 413, and a battery module assembling hole 490 which penetrates up and down is formed. The end plate 41 and the side plate 42 are fixed to each other by bolts provided in the battery module mounting holes 490, and a port frame formed by the end plate 41 and the side plate 42 is fixed to a module base.

In addition, in this embodiment, the bottom end surface of the fixed upright 413 is flush with the bottom end surface of the end plate main body 411, so that when the lower clamping plate 425 is clamped at the bottom of the fixed upright 413, a height difference exists between the bottom surface of the lower clamping plate 425 and the bottom end surface of the end plate main body 411. Those skilled in the art will understand that in practical applications, there may be a height difference between the bottom end surface of the fixed upright 413 and the bottom end surface of the end plate main body 411, so that when the lower clamping plate 425 is clamped at the bottom of the fixed upright 413, the bottom surface of the lower clamping plate 425 is flush with the bottom end surface of the end plate main body 411.

As shown in fig. 19, the bottom plate 43 includes a bottom plate horizontal portion 431 formed by bending a flat plate and a bottom plate bent portion 432, and the bottom plate bent portions 432 are respectively located at both sides, so that the bottom plate 43 has a U-shaped structure. The lower surface of the horizontal portion 431 of the base plate is provided with a plurality of kidney-shaped weight-reducing grooves, see fig. 7. A heat-conducting silica gel pad is arranged on the upper surface of the horizontal part 431 of the bottom plate, and each battery is arranged on the heat-conducting silica gel pad and arranged on the bottom plate 43 through the heat-conducting silica gel pad.

In this embodiment, the end plate 41 and the side plate 42 are preferably made of metal, so that insulation between the battery and the end plate 41 and insulation between the side plate 42 and the battery are required. In this embodiment, the end insulating plate 35 serves as the insulating spacer between the battery and the end plate 41, and the side insulating plate 422 is attached to the inner side of the side plate 421 to separate the battery from the side plate 42. As shown in fig. 20, the end insulating plate 35 includes an end insulating plate support plate 351 and an end insulating plate insulating sheet 352 attached to the inside of the end insulating plate support plate 351. The end insulating plate support plate 351 is a plate body having an elastic structure, and as shown in fig. 21, vertical obliquely bent connection portions 3511 are provided near both side edges of the end insulating plate support plate 351, and the obliquely bent connection portions 3511 divide the end insulating plate support plate 351 into a middle main support plate 3512 and edge support plates 3513 on both sides. The middle main support plate 3512 and the edge support plate 3513 are parallel to each other and are closely attached to the battery and the end plate 41, respectively. The pressing force between the battery and the end plate 41 against the end insulating plate support plate 351 can be buffered by the obliquely bent connection portion 3511, so that a certain elastic space exists between the battery and the end insulating plate 35 plate between the end plate 41. In addition, in the present embodiment, the dual-output-electrode support 45 is provided on one of the end insulating plates 35. As shown in fig. 20, the top of the end insulating plate support plate 351 of the end insulating plate 35 is provided with an output electrode support plate 353. The dual output pole support 45 is disposed on the output pole support plate 353 and includes a support base 451 and a diaphragm vertically disposed on the support base 451. The separators vertically provided on the support base 451 divide the dual output electrode support 45 into a positive electrode support portion 452 and a negative electrode support portion 453. As shown in fig. 8, dual output pole supports 45 on end insulator plates 35 are lapped on top of end plates 41. As shown in fig. 8 and 10, the positive electrode of the 1 st cell is connected to the positive electrode support 452 via the positive electrode bus bar 21, and the negative electrode of the 2 nd cell is connected to the negative electrode support 453 via the negative electrode bus bar 22. The positive electrode support portion 452 to which the positive electrode bus bar 21 is connected constitutes the positive output electrode of the battery module of this embodiment, and the negative electrode support portion 453 to which the negative electrode bus bar 22 is connected constitutes the negative output electrode of the battery module of this embodiment.

It should be noted that, in this embodiment, the bus bar connected to the negative electrode of the 2i-1 th cell and the positive electrode of the 2i +1 th cell and the bus bar connected to the positive electrode of the 2 i-2 th cell and the negative electrode of the 2i +2 th cell respectively adopt the bridge bus bar 24 and the C-shaped bus bar 25, and those skilled in the art understand that the cooperation between the bus bar connected to the negative electrode of the 2i-1 th cell and the positive electrode of the 2i +1 th cell and the bus bar connected to the positive electrode of the 2 i-2 th cell and the negative electrode of the 2i +2 th cell can also adopt other shapes of structures, as shown in fig. 23 and 24. Fig. 23 shows a structure in which the inner bridge type bus bar 26 and the C-shaped bus bar 25 are fitted, that is, the bus bar to which the cathode of the 2i-1 th cell and the anode of the 2i +1 th cell are connected and the bus bar to which the anode of the 2 i-th cell and the cathode of the 2i +2 th cell are connected are the inner bridge type bus bar 26 and the C-shaped bus bar 25, respectively. The inner bridge bus bar 26, which is used in place of the bridge bus bar 24 of fig. 8, 9, and 13, includes two electrode connections 261 and an inner bridge connection 262. The two electrode connecting portions 261 are used to connect the positive and negative electrodes, respectively. The two electrode connecting parts 261 and the inner bridge connecting part 262 constitute a C-shaped structure. The electrode connecting portion 261 and the inner bridge connecting portion 262 are connected by a Z-shaped bending portion 263, that is, the inner bridge type bus 26 is formed by Z-bending a C-shaped bus, so that the electrode connecting portion 261 and the inner bridge connecting portion 262 are not located on the same plane, and when the inner bridge type bus 26 is erected on the negative electrode of the 2i-1 th battery and the positive electrode of the 2i +1 th battery, a passing space of the C-shaped bus 25 is provided below the inner bridge connecting portion 262; the C-shaped bus bar 25 connects the positive electrode of the 2 i-th cell and the negative electrode of the 2i + 2-th cell. The lower part of the inner bridge connecting part 262 of the inner bridge type bus bar 26 is pre-coated with epoxy resin, so that a layer of epoxy resin is separated between the C-shaped bus bar 25 and the inner bridge connecting part 262 of the inner bridge type bus bar 26 to serve as an insulating layer. Fig. 24 shows a structure of the outer bus bar 27. The outer bus bar 27 is used in place of the bridge bus bar 24 in fig. 8, 9, and 13 or in place of the inner bridge bus bar 26 in fig. 23, that is, a bus bar to which the negative electrode of the 2i-1 th cell and the positive electrode of the 2i +1 th cell are connected and a bus bar to which the positive electrode of the 2 i-th cell and the negative electrode of the 2i +2 th cell are connected are the outer bus bar 27 and the C-shaped bus bar 25, respectively. The outer bus bar 27 includes two horizontal surface electrode portions 271 and an outer surface connecting portion 272. The two horizontal electrode portions 271 are used to connect the positive and negative electrodes, respectively. The outer side surface connecting portion 272 is perpendicular to the horizontal surface electrode portion 271, that is, the outer side bus bar 27 is L-shaped bent from a C-shaped bus bar, so that when the outer side bus bar 27 is mounted on the negative electrode of the 2i-1 th cell and the positive electrode of the 2i +1 th cell, the outer side surface connecting portion 272 is attached to the battery pack side surface of the battery module, and the C-shaped bus bar 25 connecting the positive electrode of the 2 i-th cell and the negative electrode of the 2i +2 th cell is located on the battery pack top surface of the battery module.

In the present embodiment, the port frame formed by the end plate 41 and the side plate 42, the battery in the port frame, the bottom plate 43, and other components do not have a fixed connection relationship. In actual assembly, a port frame formed by the end plate 41 and the side plate 42 is fixed to the module base by bolts in the battery module assembly holes 490, and bottoms of components such as a battery and a bottom plate 43 in the port frame are supported by the module base.

Claims (10)

1. A battery module with electrode output at the same side comprises a plurality of square batteries which are sequentially arranged in sequence, wherein the positive electrode and the negative electrode of each battery are positioned at the top and are respectively arranged at two sides of a central axis in the arrangement direction of the batteries; the method is characterized in that along the arrangement direction of the batteries, the positive pole of the 1 st battery and the negative pole of the 2 nd battery are positioned on the same side of the central axis, the positive poles of the 2i th battery and the 2i +1 th battery are positioned on the same side of the central axis, and the positive pole of the 2i +1 th battery and the negative pole of the 2i +2 th battery are positioned on the same side of the central axis; the positive electrode of the 1 st battery is connected with the positive output electrode of the battery module through a bus bar, the negative electrode of the 2 nd battery is connected with the negative output electrode of the battery module through a bus bar, the positive electrode of the 2i th battery is connected with the negative electrode of the 2i +2 th battery through a bus bar, and the negative electrode of the 2i-1 st battery is connected with the positive electrode of the 2i +1 st battery through a bus bar, wherein i is 1,2,3 and …; if the number of the batteries is 2N, connecting the positive electrode of the 2N-th battery with the negative electrode of the 2N-1-th battery along the arrangement direction of the batteries; if the number of the batteries is 2N +1, the cathode of the 2N +1 th battery is connected with the anode of the 2N th battery along the arrangement direction of the batteries.

2. The same-side electrode output battery module as in claim 1, wherein the bus bars comprise a bridge bus bar (24) and a C-shaped bus bar (25); a bus connected with the negative electrode of the 2i-1 th battery and the positive electrode of the 2i +1 th battery and a bus connected with the positive electrode of the 2i th battery and the negative electrode of the 2i +2 th battery respectively adopt a bridge bus (24) and a C-shaped bus (25); the middle of the bridge type bus bar (24) is provided with an upward convex bridge connection part (241); one end of the C-shaped bus bar (25) is inserted below the bridge connecting part (241) to connect the electrodes of the battery.

3. The same-side electrode-output battery module as in claim 1, wherein the bus bars comprise an inner bridge bus bar (26) and a C-shaped bus bar (25); the bus connected with the negative electrode of the 2i-1 th battery and the positive electrode of the 2i +1 th battery and the bus connected with the positive electrode of the 2 i-th battery and the negative electrode of the 2i +2 th battery respectively adopt an inner bridge type bus (26) and a C-shaped bus (25); the inner bridge type bus (26) is formed by bending a C-shaped bus in a Z shape and comprises two electrode connecting parts (261) and an inner bridge connecting part (262); the two electrode connecting parts (261) are respectively used for connecting the positive electrode and the negative electrode; the electrode connecting part (261) and the inner bridge connecting part (262) are connected through a Z-shaped bending part (263).

4. The same side electrode output battery module as in claim 1, wherein the bus bars comprise an outside bus bar (27) and a C-shaped bus bar (25); the bus connected with the negative electrode of the 2i-1 th battery and the positive electrode of the 2i +1 th battery and the bus connected with the positive electrode of the 2i th battery and the negative electrode of the 2i +2 th battery respectively adopt an outer bus (27) and a C-shaped bus (25); the outer bus (27) is formed by bending a C-shaped bus in an L shape and comprises two horizontal plane electrode parts (271) and an outer side surface connecting part (272); the two horizontal electrode parts (271) are respectively used for connecting the anode and the cathode; the outer side surface connecting part (272) is perpendicular to the horizontal surface electrode part (271), so that the outer side surface connecting part (272) of the outer side type bus bar (27) is attached to the battery pack side surface of the battery module, and the C-shaped bus bar (25) is positioned on the battery pack top surface of the battery module.

5. The battery module with the same side electrode output as the claim 1, wherein the battery is arranged on a bottom plate (43) and is arranged in a port-shaped frame defined by two end plates (41) and two side plates (42), and a wiring harness isolation plate (31) is arranged on the top of the battery; the wire harness isolation plate (31) is a plate-shaped body and is provided with a battery electrode hole (313); the positions of the battery electrode holes (313) are matched with the positions of the positive and negative electrodes of the arranged batteries; the bus is erected on the wiring harness isolation plate (31) and is connected with the positive electrode and the negative electrode of the battery through a battery electrode hole (313); the wire harness isolation plate (31) is provided with a plurality of wire isolation inner baffles (314), and two sides of the wire harness isolation plate are respectively provided with a wire isolation outer plate (312); each bus is isolated independently through an inner isolation plate (314); a main partition line plate (311) is separated from the middle of the wiring harness partition plate (31) through a partition line inner partition plate (314); a flexible circuit board (32) is arranged in the separation line main flat plate (311); the flexible circuit board (32) is connected with the bus bar through the electrode connecting lug (323).

6. The battery module with same-side electrode output as in claim 5, wherein the end plate (41) is a plate body composed of an end plate main body (411) and two fixed columns (413); the two fixed upright posts (413) are vertical and are respectively positioned at two sides of the end plate (41); the fixed upright column (413) is provided with an end plate mounting hole (414) along the vertical direction; a plurality of flat plate grooves (415) are arranged on the fixed upright column (413); the flat plate groove (415) is horizontal, and the fixed upright column (413) is cut into a plurality of upright column sections; the side plate (42) comprises a side plate body (421) and two upright post connecting parts; the two upright post connecting parts are respectively positioned at two ends of the side plate body (421); the upright post connecting part comprises an upright post cladding plate (423), an upper clamping plate (424), a lower clamping plate (425) and a plurality of middle clamping plates (426); the upper clamping plate (424), the lower clamping plate (425) and the middle clamping plate (426) are positioned on the inner side of the upright post cladding plate (423) and are provided with mounting holes; two upright post cladding plates (423) at two ends of the side plate (42) are respectively cladded on the cylindrical surfaces of two fixed upright posts (413) at the same side of the two end plates (41), an upper clamping plate (424) is clamped at the top of the fixed upright posts (413), a lower clamping plate (425) is clamped at the bottom of the fixed upright posts (413), each middle clamping plate (426) is respectively clamped in a corresponding flat plate groove (415), the upper clamping plate (424), the mounting holes in the lower clamping plate (425) and the middle clamping plate (426) are coaxial with the vertical axis of the end plate mounting hole (414) in the fixed upright post (413).

7. The battery module with electrode output on the same side as the claim 5, characterized in that the bottom plate (43) is provided with a heat-conducting silica gel pad; the battery is arranged on the heat-conducting silica gel pad.

8. The same-side electrode output battery module as in claim 5, further comprising an upper cover plate (44); a hasp mechanism is arranged between the upper cover plate (44) and the wire separating outer side plate (312); the upper cover plate (44) is buckled on the wiring harness isolation plate (31) through the buckle mechanism and covers the flexible circuit board (32) and the bus bars.

9. The same-side electrode output battery module as in claim 5, wherein an end insulating plate (35) is provided between the end plate (41) and the battery; a double-output-electrode supporting piece (45) is arranged on the outer side of an end insulating plate (35) between the end plate (41) and the 1 st battery; the dual-output-electrode support (45) is lapped on the end plate (41) and comprises a support base (451) and a clapboard vertically arranged on the support base (451); the separator vertically arranged on the support base (451) divides the double-output pole support (45) into a positive pole support part (452) and a negative pole support part (453); the positive electrode of the 1 st battery is connected with a positive electrode supporting part (452) through a positive electrode bus bar (21); the negative electrode of the 2 nd cell is connected to the negative electrode support part (453) through a negative electrode bus bar (22).

10. The same-side electrode output battery module as set forth in claim 9, wherein the end insulating plate (35) comprises an end insulating plate supporting plate (351) and an end insulating plate insulating sheet (352) attached to the inside of the end insulating plate supporting plate (351); the end insulating plate support plate (351) is provided with vertical oblique bending connecting parts (3511) at positions close to the edges of the two sides of the end insulating plate support plate (351), and the end insulating plate support plate (351) is divided into a middle main support plate (3512) and edge support plates (3513) on the two sides by the oblique bending connecting parts (3511).

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