A battery module based on setting batteries at opposite ends of electrodes

Abstract

The present invention discloses a battery module based on the arrangement of batteries at opposite ends of electrodes, including a plurality of batteries arranged in a module frame. The battery is a rectangular long strip, and the poles of the positive and negative poles are respectively located on the end faces of the front and rear ends of the battery strip direction, and are arranged into a battery row in a manner of aligning the end faces. The number of batteries is an even number, and the positive and negative poles of the batteries are arranged alternately. The module frame includes two side end plates parallel to the batteries and a plurality of U-shaped strips arranged at the top and bottom of the battery row, and the U-shaped strips are connected to the side end plates. The front and rear end faces of the battery row are respectively provided with connection components through wiring harness isolation plates. The connection component at the front end leads to the output electrode. The flexible circuit boards in the two connection components are connected to the connectors arranged on the outside of the side end plates through the side connection plates. Compared with the traditional structure, the present invention can bring greater energy density, and the temperature control system in the battery box can directly act on the battery, thereby improving the temperature control efficiency.

Description

Technical Field

[0001] The invention relates to a battery module. Background Art

[0002] Under the existing technology, battery packs are usually implemented in two ways. The first is to form a battery module with several batteries, and then form a battery with several battery modules. The second is to directly pack the batteries into a battery pack. Regardless of the battery pack assembly method, the positive and negative poles of the battery are usually located on its top surface. When the battery pack is assembled, the battery and the battery connection need to be connected with corresponding accessories, such as a connection row and a collection line for collecting battery temperature and voltage. In the case where the positive and negative poles of the battery are located on the top surface of the battery, the connection accessories above the battery will occupy a large space. The space utilization rate of the space occupied by this part of the connection accessories is very low. This is determined by the overall area of ​​the battery box of the battery pack. Regardless of the way the batteries are composed of battery modules or the way the batteries are directly packaged into battery packs, the batteries are arranged in the battery box in a row. At this time, the connection row or the collection line needs to cover the entire battery box area. More specifically, the distance between the battery poles is too far, and the length of the connection row or the collection line that needs to be connected is too long.

[0003] In addition, in the traditional battery module structure, the bottom plate of the battery module used to support the bottom of the battery needs to cover the bottom surface of the entire battery module. In this structure, the liquid cooling plate and heating plate in the battery box are separated from the battery by a layer of battery module bottom plate, thereby reducing the temperature control efficiency of the liquid cooling plate and heating plate of the battery box. Summary of the invention

[0004] Problems to be solved by the present invention:

[0005] 1. Improve the energy density of the battery pack;

[0006] 2. Improve the fit between the battery in the battery module and the liquid cooling plate and heating plate of the battery pack to improve the temperature control efficiency.

[0007] To solve the above problems, the solution adopted by the present invention is as follows:

[0008] A battery module based on setting batteries at opposite ends of electrodes, comprising a module frame and a plurality of batteries arranged in the module frame, wherein the batteries are rectangular long strips, and the poles of the positive and negative poles are respectively located on the end faces of the front and rear ends of the battery in the long strip direction; the batteries are arranged in the module frame in a manner that the front and rear end faces in the long strip direction are aligned to form a battery row; in the battery row, the positive and negative poles of the batteries are arranged alternately; the front and rear end faces of the battery row are respectively provided with connection components through wiring harness isolation plates; wherein the wiring harness isolation plate on the front end face of the battery row is a first wiring harness isolation plate, which is provided with a first connection component; the wiring harness isolation plate on the rear end face of the battery row is a second wiring harness isolation plate, which is provided with a second connection component; the first connection component and the second connection component both include a connection row for connecting the batteries in series; wherein the first connection component also includes Output pole tab and first acquisition circuit; the second connection component also includes a second acquisition circuit; the output pole tab is connected to the pole of the battery through a tab row; the first acquisition circuit includes a first flexible circuit board, a first side connecting plate and a first connector; the first flexible circuit board is arranged on the first wiring harness isolation plate; the first connector is connected to the first flexible circuit board through the first side connecting plate; the second acquisition circuit includes a second flexible circuit board, a second side connecting plate and a second connector; the second flexible circuit board is arranged on the second wiring harness isolation plate; the second connector is connected to the second flexible circuit board through the second side connecting plate; the two output pole tabs are respectively located on both sides of the front end of the battery module; the first connector and the second connector are respectively located on both sides of the rear end of the battery module.

[0009] Furthermore, the module frame includes two side end plates and a plurality of U-shaped strips; the two side end plates are respectively vertically arranged on both sides of the battery row; the U-shaped strips are divided into a bottom U-shaped strip and a top U-shaped strip; wherein the bottom U-shaped strip is arranged below the battery row, and its two ends are respectively connected to the two side end plates; the top U-shaped strip is arranged above the battery row, and its two ends are respectively connected to the two side end plates; the first side connecting plate and the second side connecting plate are respectively close to the outer side surfaces of the two side end plates; the first connector and the second connector are respectively arranged on the two side end plates, and are located on the outer side surfaces of the rear ends of the side end plates.

[0010] Furthermore, the side end plate is hollowed out in the vertical direction, including a main supporting plate and a plurality of bosses arranged on the top of the main supporting plate; the height of the main supporting plate is lower than the height of the battery; the top of the boss is flush with the top surface of the battery; a first sinker is provided on the outer side of the boss for connecting the top U-shaped strip; a second sinker is provided on the outer side below the main supporting plate for connecting the bottom U-shaped strip.

[0011] Furthermore, the U-shaped strip is made of a long strip of metal plate, including a main strip located in the middle formed by bending the long strip of metal plate at both ends and end buckle plates located at both ends; the end buckle plates of the bottom U-shaped strip are respectively connected to the second sinking platform, and the end buckle plates of the top U-shaped strip are respectively connected to the first sinking platform, so that the main strip of the bottom U-shaped strip spans across each battery below the battery row and provides bottom support for each battery, and the main strip of the top U-shaped strip spans across each battery above the battery row and presses each battery.

[0012] Furthermore, the main strip of each bottom U-shaped strip covers 20% to 80% of the bottom area of ​​the battery row below the battery row.

[0013] Furthermore, a third sink for arranging the first connector or the second connector is provided on the outer side of the rear end of the main carrier plate.

[0014] Furthermore, a fourth sunken platform for setting a first side connecting plate is provided between the first sunken platform and the second sunken platform; the first side connecting plate is set on the fourth sunken platform by means of fasteners.

[0015] Furthermore, a pole lug insertion hole is provided at the front end of the side end plate in the vertical direction, and an output pole support is provided through the pole lug insertion hole; the output pole lug is connected to the output pole support.

[0016] Furthermore, the wiring harness isolation plate includes a main partition, a plurality of vertical partitions arranged on the main partition and a plurality of connecting holes arranged on the main partition; the vertical partitions include edge vertical partitions and hole edge vertical partitions; the hole edge vertical partitions are arranged at the edges of the connecting holes; the edge vertical partitions are arranged at the edges of the main partitions; the connecting holes are arranged in rows; circuit board grooves separated by the edge vertical partitions and the hole edge vertical partitions are provided on both sides along the arrangement direction of the connecting holes; a connecting groove connecting the circuit board grooves on both sides is provided between adjacent connecting holes; the circuit board groove is used to set the first flexible circuit board or the second flexible circuit board; the connecting row is arranged in the connecting hole and is connected to the poles on the front and rear end faces of the battery row.

[0017] Furthermore, the connection hole is square, and two diagonal portions are respectively provided with a front clamping portion and a rear clamping portion; the connection row is clamped between the front clamping portion and the rear clamping portion.

[0018] The technical effects of the present invention are as follows:

[0019] 1. Compared with the battery module of the traditional structure, in the battery module of the present invention, the connection assembly is located at the end of the battery module, thereby shortening the distance between the poles, thereby improving the space utilization of the connection assembly, thereby improving the space utilization of the battery pack as a whole and improving the energy density of the battery pack.

[0020] 2. The bottom plate of the battery module used to support the battery is not completely covered. Therefore, when the battery pack is placed in the battery box to form a battery pack, the liquid cooling plate and heating plate in the battery box can directly fit the battery in the battery module without the need for a layer of module bottom plate in the middle.

[0021] 3. The low-voltage wiring harness interface and the high-voltage wiring harness are located at both ends of the battery module to reduce mutual interference.

[0022] 4. Compared with the battery module of the traditional structure, the battery module of the present invention has a simple structure, reduces many parts and components, and is more convenient to install.

[0023] 5. The top and bottom of the module are incompletely covered structures, thereby reducing the weight of the module top and bottom plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall structural exploded view of a battery module embodiment of the present invention.

[0025] Figure 2 It is a three-dimensional schematic diagram of the overall structure of a battery module embodiment of the present invention.

[0026] Figure 3 It is a top view of the overall structure of a battery module embodiment of the present invention.

[0027] Figure 4 It is a structural exploded view of the battery module embodiment of the present invention after hiding the front and rear connecting components.

[0028] Figure 5 is a schematic diagram of the exploded structure of the first connection component.

[0029] Figure 6 is a schematic diagram of the exploded structure of the second connection component.

[0030] Figure 7 It is a structural schematic diagram of the first wiring harness isolation plate.

[0031] Figure 8 It is a structural diagram of the connecting row.

[0032] Fig. 9 It is a structural diagram of the side end plate.

[0033] Fig.10 It is a schematic diagram of the U-shaped strip structure.

[0034] in,

[0035] 100 is a module frame, 101 is a bottom U-shaped strip, and 102 is a top U-shaped strip;

[0036] 11 is a side end plate, 111 is a main bearing plate, 112 is a boss, 113 is a first sink, 114 is a second sink, 115 is a third sink, 116 is a fourth sink, 118 is a tab insertion hole, and 119 is a module mounting hole;

[0037] 12 is a U-shaped strip, 121 is a main strip, 122 is an end buckle plate, and 123 is a heat-conducting insulating layer;

[0038] 13 is an end cover plate, 131 is a first end cover plate, 132 is a second end cover plate, and 19 is a heat insulation plate;

[0039] 200 is a battery row, 2 is a battery, 201 is a front end, 202 is a rear end, 21 is a pole, 22 is an explosion-proof valve, and 29 is a buffer insulation pad;

[0040] 301 is a first connection component, and 302 is a second connection component;

[0041] 401 is a first wiring harness isolation plate, 402 is a second wiring harness isolation plate, 4 is a wiring harness isolation plate, 41 is a main partition, 42 is a vertical partition, 421 is an edge vertical partition, 422 is a hole edge vertical partition, 43 is a connecting hole, 431 is a front clamping portion, 432 is a rear clamping portion, 44 is a circuit board slot, 441 is a connecting slot, 442 is a positioning column, 443 is a slot edge opening, 45 is a pole ear connecting slot, and 451 is a pole hole;

[0042] 51 is a connection row, 511 is a connection plate, 512 is a buffer bridge, 513 is a pole connection part, 514 is a collection piece connection slot, 515 is a front clamping slot, 52 is an output pole ear, 53 is a first collection circuit, 531 is a first flexible circuit board, 532 is a first side connection plate, 533 is a first connector, 534 is a first collection piece, 538 is a nail hole, 54 is a second collection circuit, 541 is a second flexible circuit board, 542 is a second side connection plate, 543 is a second connector, 544 is a second collection piece; 55 is a pole ear row; 59 is a nail;

[0043] 6 is an output pole support, 61 is a base, 62 is an insert nut, and 63 is an output pole cover. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below with reference to the accompanying drawings.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a battery module based on the arrangement of batteries at opposite ends of electrodes comprises a module frame 100 and a plurality of batteries 2 arranged in the module frame 100. The battery 2 is a rectangular strip with a length of 365-600 mm, a height of 50-150 mm, and a thickness of 12-80 mm. The battery 2 is a battery arranged based on the opposite ends of electrodes, that is, the poles 21 of the positive and negative poles are respectively located on the end faces of the front and rear ends of the battery 2 in the strip direction. The batteries 2 are arranged in the module frame 100 in such a way that the front and rear end faces of the battery 2 in the strip direction are aligned to form a battery row 200. In the battery row 200, the number of batteries 2 is an even number. The positive and negative poles of the battery 2 are arranged alternately, that is, if the front end of one of the batteries 2 is a positive pole and the rear end is a negative pole, the battery 2 adjacent to the battery has a negative pole at the rear end and a positive pole at the front end. The front and rear end faces of the battery row 200 are respectively provided with connection components through the harness isolation plate 4. After the batteries 2 in the battery row 200 are connected in series through the connection bars in the front and rear end connection components, the output electrodes of the battery module are connected through the outermost batteries 2 on both sides. Series connection means that the positive electrode of one battery 2 is connected to the negative electrode of another battery 2.

[0046] The module frame 100 includes two side end plates 11 and a plurality of U-shaped strips 12. The side end plates 11 are the main load-bearing plates, and are preferably made of aluminum profiles that are hollowed out in the vertical direction. The two side end plates 11 are arranged vertically opposite to each other and are located on both sides of the battery row 200, parallel to the long strip direction of each battery 2, and clamp the battery row on both sides of the battery row 200. The U-shaped strips 12 are divided into a bottom U-shaped strip 101 and a top U-shaped strip 102. The bottom U-shaped strip 101 is arranged below the battery row 200, and its two ends are respectively connected to the bottom of the two side end plates 11. The top U-shaped strip 102 is arranged above the battery row, and its two ends are respectively connected to the top of the two side end plates 11. The number of the bottom U-shaped strips 101 and the top U-shaped strips 102 is the same, and they are arranged opposite to each other up and down. Thus, a receiving cavity for accommodating the battery 2 is formed between the two side end plates 11 and between the bottom U-shaped strip plate 101 and the top U-shaped strip plate 102. The battery 2 is arranged in the receiving cavity.

[0047] Specifically, refer to Fig. 9 The side end plate 11 includes a main support plate 111 and a plurality of bosses 112 disposed on the top of the main support plate 111. The bottom of the main support plate 111 is flush with the battery 2 and its height is lower than that of the battery 2. The top of the boss 112 is flush with the top surface of the battery 2. A first sink 113 is disposed on the outer side of the boss 112 for connecting the top U-shaped strip 102. A second sink 114 is disposed on the outer side below the main support plate 111 for connecting the bottom U-shaped strip 101. Fig.10The U-shaped strip 12 is made of a long strip of metal plate, including a main strip 121 located in the middle formed by bending the long strip of metal plate at both ends and end buckle plates 122 located at both ends. The end buckle plates 122 of the bottom U-shaped strip 101 are respectively close to the second sinking platform 114 and are welded to the end side plate 11 at the second sinking platform 114, so that the main strip 121 of the bottom U-shaped strip 101 spans across each battery 2 below the battery row 200 and provides bottom support for each battery 2. There is a gap between adjacent bottom U-shaped strips 101. The end buckle plates 122 of the top U-shaped strip 102 are respectively close to the first sinking platform 113 and are welded to the end side plate 11 at the first sinking platform 113, so that the main strip 121 of the top U-shaped strip 102 spans across each battery 2 above the battery row 200 and buckles each battery 2 above the battery 2. There is a gap between adjacent top U-shaped strips 102.

[0048] The wiring harness isolation plate 4 on the front end face of the battery row 200 is the first wiring harness isolation plate 401. The first wiring harness isolation plate 401 is in close contact with the front end face of the battery row 200. The connection component set at the front end of the battery row 200 through the first wiring harness isolation plate 401 is the first connection component 301. The first connection component 301 includes a connection row 51, an output pole ear 52 and a first acquisition line 53. The wiring harness isolation plate 4 on the rear end face of the battery row 200 is the second wiring harness isolation plate 402. The second wiring harness isolation plate 402 is in close contact with the rear end face of the battery row 200. The connection component set at the rear end of the battery row 200 through the second wiring harness isolation plate 402 is the second connection component 302. The second connection component 301 includes a plurality of connection rows 51 and a second acquisition line 54. The connection row 51 is used to connect the batteries 2 in series. Since the positive and negative poles of the batteries 2 are arranged alternately in the battery row 200, the connection row 51 can be connected in series with two adjacent batteries 2. Refer to Figure 5 The output pole tab 52 is connected to the pole of the battery 2 at the side of the battery row 200 through the tab row 55. Thus, after the front and rear batteries 2 in the battery row 200 are connected in series to form a whole, the output electrode of the battery module is output through the output pole tab 52. The two output pole tabs 52 are respectively located on both sides of the front end of the battery module.

[0049] Reference Figure 5 and Figure 6, the first acquisition circuit 53 includes a first flexible circuit board 531, a first side connection plate 532 and a first connector 533. The first flexible circuit board 531 is arranged on the first harness isolation plate 401. The first connector 533 is connected to the first flexible circuit board 531 through the first side connection plate 532. The first side connection plate 532 and the first flexible circuit board 531 are connected to form an L-shaped structure. The second acquisition circuit 54 includes a second flexible circuit board 541, a second side connection plate 542 and a second connector 543. The second flexible circuit board 541 is arranged on the second harness isolation plate 402. The second connector 543 is connected to the second flexible circuit board 541 through the second side connection plate 542. The second flexible circuit board 541 and the second side connection plate 542 are connected to form an L-shaped structure. The first flexible circuit board 531 and the second flexible circuit board 541 are connected to the connection row 51 through the first acquisition sheet 534 and the second acquisition sheet 544 respectively. Among them, part of the first acquisition sheet 534 and the second acquisition sheet 544 are also connected to a temperature sensor for detecting the temperature of the battery 2. The temperature sensor is not shown in the figure, but it does not hinder the understanding of those skilled in the art.

[0050] Reference Figure 7 The wiring harness isolation plate 4 includes a main partition 41, a plurality of vertical partitions 42 arranged on the main partition 41, and a plurality of connection holes 43 arranged on the main partition 41. The vertical partition 42 is located on the front of the wiring harness isolation plate 4; the back of the wiring harness isolation plate 4 is close to the front and rear end faces of the battery row 200. The vertical partition 42 includes an edge vertical partition 421 and a hole edge vertical partition 422. The edge vertical partition 421 is arranged on the edge of the main partition 41. The hole edge vertical partition 422 is arranged on the edge of the connection hole 43. The connection holes 43 are used to set the connection row 51, which corresponds to the poles 21 on the front and rear end faces of the battery row 200 and is arranged in a row. Each connection hole 43 corresponds to two poles 21 on the end faces of two adjacent batteries 2, and the connection row 51 arranged in the connection hole 43 connects the two corresponding poles. A circuit board slot 44 is provided on both sides along the arrangement direction of the connection holes 43, which is isolated by the edge vertical partition 421 and the hole edge vertical partition 422. A connecting groove 441 is provided between adjacent connecting holes 43 to connect the circuit board grooves 44 on both sides. The circuit board groove 44 is used to set the first flexible circuit board 531 or the second flexible circuit board 541, and is provided with a plurality of positioning posts 442 for locking with the first flexible circuit board 531 or the second flexible circuit board 541. A groove edge opening 443 is provided at the end edge of the circuit board groove 44. The first flexible circuit board 531 and the second flexible circuit board 541 in the circuit board groove 44 are connected to the first side connecting plate 532 and the second side connecting plate 542 through the groove edge opening 443.

[0051] The connection row 51 is arranged in the connection hole 43, and is connected to the poles 21 on the front and rear end faces of the battery row 200. The connection hole 43 is square, and a connection row clamping mechanism is arranged therein. The connection row clamping mechanism includes a front clamping portion 431 and a rear clamping portion 432 respectively arranged at two diagonals. That is, the two front clamping portions 431 are respectively arranged diagonally, and the two rear clamping portions 432 are respectively arranged diagonally, and the two front clamping portions and the two rear clamping portions are respectively located at different diagonals. The connection row 51 is clamped between the front clamping portion 431 and the rear clamping portion 432. Specifically, the two front clamping portions 431 are clamped in front of the connection row 51, and the two rear clamping portions 432 are clamped behind the connection row 51.

[0052] Connecting row 51, refer to Figure 8 , including two connecting plates 511 connected by a buffer bridge 512. The buffer bridge 512 is an Ω-shaped bending portion. The connecting plate 511 is provided with a pole connecting portion 513, a collection piece connecting groove 514 and a front clamping groove 515. The pole connecting portion 513, the collection piece connecting groove 514 and the front clamping groove 515 are all formed by stamping the connecting plate 511. Among them, the pole connecting portion 513 is a part used for welding and connecting to the pole 21 of the battery 2, and the collection piece connecting groove 514 is used to accommodate and connect the first collection piece 534 or the second collection piece 544. The front clamping groove 515 is used to accommodate the front clamping portion 431.

[0053] It should be pointed out that Figure 7 The wiring harness isolation plate 4 shown in the example is the first wiring harness isolation plate 401. In the first wiring harness isolation plate 401, pole lug connection grooves 45 are also provided at both ends along the arrangement direction of the connection holes 43. A pole hole 451 is provided in the pole lug connection groove 45. The pole lug connection groove 45 is used to set a pole lug row 55. The pole lug row 55 is arranged in the pole lug connection groove 45 to connect the pole 21 passing through the pole hole. In the pole lug connection groove 45, the output pole pole lug 52 is welded and connected to the pole lug row 55. Compared with the first wiring harness isolation plate 401, the second wiring harness isolation plate 402 does not need a pole lug connection groove, and its specific structure is substantially the same as that of the first wiring harness isolation plate 401, and will not be repeated.

[0054] The first connector 533 and the second connector 543 are respectively located on both sides of the rear end of the battery module. Specifically, a third sinker 115 for setting the first connector 533 or the second connector 543 is provided on the outer side of the rear end of the main support plate 111, and a fourth sinker 116 for setting the first side connecting plate 532 is provided between the first sinker 113 and the second sinker 114. The first connector 533 and the second connector 543 are respectively arranged on the third sinker 115 through the first side connecting plate 532 and the second side connecting plate 542 connected to them. Among them, the first side connecting plate 532 is connected from the first flexible circuit board 531 connected to the front end through the fourth sinker 116 on the outer side of the main support plate 111 to the third sinker 115 on the outer side of the rear end main support plate 111, thereby connecting the first connector 533 arranged on the side of the rear end of the battery module.

[0055] In this embodiment, the first side connecting plate 532 and the second side connecting plate 542 are realized by bonding a flexible circuit board to an insulating plate. The flexible circuit boards on the first side connecting plate 532 and the second side connecting plate 542 are integrated with the first flexible circuit board 531 and the second flexible circuit board 541, respectively. The first side connecting plate 532 and the second side connecting plate 542 are respectively attached to the outer side surfaces of the two side end plates 11, and are fixed to the main support plate 111 by fastening nails, referring to Figure 2 Middle buckle nail 59 and Figure 5 The middle rivet hole 538 is used as an example. After the rivet 59 passes through the rivet hole 538, the first side connecting plate 532 is fixed to the fourth sinker 116 on the outer side of the main bearing plate 111. The second side connecting plate 542 is also fixed by rivets. Those skilled in the art understand that the first side connecting plate 532 and the second side connecting plate 542 can also be fixed to the side end plate 11 by other means such as rivets and bolts.

[0056] Furthermore, a tab insertion hole 118 is provided in the vertical direction at the front end of the side end plate 11, and an output pole support member 6 is provided through the tab insertion hole 118. Fig. 9 The output pole support member 6 includes a base 61, an insert nut 62 and an output pole cover 63. The base 61 includes an insert portion at the bottom and a pole lug accommodating cavity arranged on the insert portion. The base 61 is inserted into the pole lug inserting hole 118 through the insert portion. The insert nut 62 is arranged in the pole lug accommodating cavity, and is used to be connected to the output pole pole lug 52 by bolts. That is, one end of the output pole pole lug 52 is arranged in the output pole support member 6 arranged on the side end plate 11, and the other end is bent and connected to the pole column 21 through the pole lug row 55. The output pole cover 63 is arranged above the pole lug accommodating cavity by snap-fitting. The top surface of the output pole cover 63 is flush with the top surface of the battery 2.

[0057] Furthermore, the side end plate 11 is used as a main load-bearing plate, and module mounting holes 119 are provided in the vertical direction at both ends. The module mounting holes 119 are used to install and fix the battery module in the battery box.

[0058] Furthermore, in the present embodiment, in order to enable the battery module to be arranged in the battery box so that the battery 2 can directly adhere to the liquid cooling plate and the heating plate in the battery box to achieve a better heat exchange effect, the main body 121 of each bottom U-shaped strip 101 covers the bottom area of ​​the battery row 200 below the battery row 200 by no more than 80%, preferably 20% to 50%. That is, the main strip 121 of each bottom U-shaped strip 101 covers the bottom area of ​​the module frame by no more than 80%, preferably 20% to 50%.

[0059] Furthermore, an explosion-proof valve 22 is also provided on the top surface of the battery 2. There are two explosion-proof valves 22 on the top surface of the battery 2. The explosion-proof valve 22 is located in the gap between two adjacent top U-shaped strips 102. Therefore, when the internal pressure of the battery 2 is too high and the explosion-proof valve 22 explodes, the pressure and heat can be released through the gap between the top U-shaped strips 102.

[0060] Furthermore, the front and rear ends of the battery module are respectively provided with end cover plates 13. Among them, the end cover plate 13 provided at the front end of the battery module is a front end cover plate 131, and the end cover plate 13 provided at the rear end is a rear end cover plate 132. The front end cover plate 131 and the rear end cover plate 132 can be connected to the end side plate 11 or the wiring harness isolation plate 4 by snapping.

[0061] Furthermore, a buffer heat-insulating pad 29 is provided between the batteries 2. A heat-insulating insulating plate 19 is provided on the inner side of the side end plate 11. A heat-conducting insulating layer 123 is provided on the inner side of the main strip 121 of the U-shaped strip 12. The heat-conducting insulating layer 123 is coated on the inner side of the main strip 121 using a heat-conducting structural adhesive, that is, the battery 2 and the main strip 121 are bonded together by the heat-conducting structural adhesive. The heat-conducting structural adhesive used in the heat-conducting insulating layer 123 in this embodiment has a thermal conductivity of 0.5~15.0W / Km and a bonding strength of 0.5~30.0MPa.

[0062] In addition, it should be pointed out that those skilled in the art understand that the first side connecting plate 532 and the second side connecting plate 542 can also be directly made of a flexible circuit board.

Claims

1. A battery module based on arranging batteries at opposite ends of electrodes, comprising a module frame (100) and a plurality of batteries (2) arranged in the module frame (100), characterized in that: The battery (2) is in the form of a rectangular strip, and the positive and negative poles (21) are respectively located on the end faces of the front and rear ends of the battery (2) in the strip direction; the batteries (2) are arranged in the module frame (100) in a manner such that the front and rear end faces in the strip direction are aligned to form a battery row (200); the number of batteries (2) in the battery row (200) is an even number, and the positive and negative poles of the batteries (2) are arranged alternately; the front and rear end faces of the battery row (200) are respectively provided with connection components through the wiring harness isolation plate (4); wherein the front end face of the battery row (200) The wiring harness isolation plate (4) on the battery row (200) is a first wiring harness isolation plate (401) provided with a first connection assembly (301); the wiring harness isolation plate (4) on the rear end surface of the battery row (200) is a second wiring harness isolation plate (402) provided with a second connection assembly (302); the first connection assembly (301) and the second connection assembly (302) both include a connection row (51) for connecting the batteries (2) in series; wherein the first connection assembly (301) also includes an output pole ear (52) and a first acquisition circuit (53); the second connection assembly (302 ) also includes a second acquisition circuit (54); the output pole tab (52) is connected to the pole of the battery (2) through a tab row (55); the first acquisition circuit (53) includes a first flexible circuit board (531), a first side connecting plate (532) and a first connector (533); the first flexible circuit board (531) is arranged on the first wiring harness isolation plate (401); the first connector (533) is connected to the first flexible circuit board (531) through the first side connecting plate (532); the second acquisition circuit (54 ) comprises a second flexible circuit board (541), a second side connecting plate (542) and a second connector (543); the second flexible circuit board (541) is arranged on the second wiring harness isolation plate (402); the second connector (543) is connected to the second flexible circuit board (541) through the second side connecting plate (542); the two output pole tabs (52) are respectively located at both sides of the front end of the battery module; the first connector (533) and the second connector (543) are respectively located at both sides of the rear end of the battery module.

2. The battery module based on arranging batteries at opposite ends of electrodes according to claim 1, characterized in that: The module frame (100) comprises two side end plates (11) and a plurality of U-shaped strips (12); the two side end plates (11) are respectively arranged vertically on both sides of the battery row (200); the U-shaped strips (12) are divided into a bottom U-shaped strip (101) and a top U-shaped strip (102); wherein the bottom U-shaped strip (101) is arranged below the battery row (200), and its two ends are respectively connected to the two side end plates (11); the top U-shaped strip (102) is arranged above the battery row, and its two ends are respectively connected to the two side end plates (11); the first side connecting plate (532) and the second side connecting plate (542) are respectively closely attached to the outer side surfaces of the two side end plates (11); the first connector (533) and the second connector (543) are respectively arranged on the two side end plates (11) and are located on the outer side surfaces of the rear ends of the side end plates (11).

3. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 2, characterized in that: The side end plate (11) is hollowed out in the vertical direction, and comprises a main support plate (111) and a plurality of bosses (112) arranged on the top of the main support plate (111); the height of the main support plate (111) is lower than the height of the battery (2); the top of the boss (112) is flush with the top surface of the battery (2); a first sunken platform (113) for connecting to the top U-shaped strip plate (102) is arranged on the outer side of the boss (112); and a second sunken platform (114) for connecting to the bottom U-shaped strip plate (101) is arranged on the outer side below the main support plate (111).

4. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 3, characterized in that: The U-shaped strip (12) is made of a long strip of metal plate, and comprises a main strip (121) located in the middle and end buckle plates (122) located at both ends formed by bending the long strip of metal plate at both ends; the end buckle plates (122) of the bottom U-shaped strip (101) are respectively connected to the second sinking platform (114), and the end buckle plates (122) of the top U-shaped strip (102) are respectively connected to the first sinking platform (113), so that the main strip (121) of the bottom U-shaped strip (101) spans across each battery (2) below the battery row (200) and provides bottom support for each battery (2), and the main strip (121) of the top U-shaped strip (102) spans across each battery (2) above the battery row (200) and presses each battery (2).

5. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 4, characterized in that: The main strips (121) of each bottom U-shaped strip (101) cover 20% to 80% of the bottom area of ​​the battery row (200) below the battery row (200).

6. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 3, characterized in that: A third sink (115) for arranging the first connector (533) or the second connector (543) is provided on the outer side of the rear end of the main support plate (111).

7. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 3, characterized in that: A fourth sunken platform (116) for arranging a first side connecting plate (532) is provided between the first sunken platform (113) and the second sunken platform (114); the first side connecting plate (532) is arranged on the fourth sunken platform (116) by means of fasteners.

8. The battery module based on arranging batteries at opposite ends of electrodes as claimed in claim 3, characterized in that: A pole lug insertion hole (118) is provided in the vertical direction at the front end of the side end plate (11), and an output pole support member (6) is provided through the pole lug insertion hole (118); the output pole lug (52) is connected to the output pole support member (6).

9. The battery module based on arranging batteries at opposite ends of electrodes according to claim 1, characterized in that: The wiring harness isolation plate (4) comprises a main partition (41), a plurality of vertical partitions (42) arranged on the main partition (41), and a plurality of connection holes (43) arranged on the main partition (41); the vertical partitions (42) comprise edge vertical partitions (421) and hole edge vertical partitions (422); the hole edge vertical partitions (422) are arranged at the edges of the connection holes (43); the edge vertical partitions (421) are arranged at the edges of the main partition (41); the connection holes (43) are arranged in rows; and the connection holes (43) are arranged in rows along the connection holes (43). Circuit board slots (44) separated by the edge vertical partitions (421) and the hole edge vertical partitions (422) are provided on both sides of the column direction; a connecting slot (441) connecting the circuit board slots (44) on both sides is provided between adjacent connecting holes (43); the circuit board slots (44) are used to set the first flexible circuit board (531) or the second flexible circuit board (541); the connecting row (51) is set in the connecting hole (43) and connected to the poles (21) on the front and rear end surfaces of the battery row (200).

10. The battery module based on arranging batteries at opposite ends of electrodes according to claim 9, characterized in that: The connection hole (43) is square, and two diagonal portions are respectively provided with a front clamping portion (431) and a rear clamping portion (432); the connection row (51) is clamped between the front clamping portion (431) and the rear clamping portion (432).

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