Soft package battery module

Abstract

The utility model belongs to the field of battery modules, and discloses a soft package battery module, which comprises a battery cell module provided with electrode tabs, the battery cell module is provided with a length direction, and the electrode tabs extend along the length direction; one side of the battery cell support module and the battery cell module are fixed into a whole through an electrode tab to serve as a battery cell module assembly, and the battery cell support assembly is electrically connected with a battery cell support element on the battery cell support module; and the first PCBA board is mounted on the battery cell bracket module. When the battery pack is assembled, the battery cell module and the battery cell bracket module are assembled into the battery cell module assembly outside the shell, then the first PCBA board is connected to the battery cell module assembly, and the battery cell module assembly is uniformly arranged in the cavity of the shell after all the battery cell modules are assembled in order; compared with the step of sequentially installing the battery cell support module, the battery cell module and the first PCBA board in the shell in the prior art, the installation mode is simple, convenient and rapid in process, time-saving and labor-saving, and high in installation efficiency, so that the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery modules, specifically relating to a soft-pack battery module. Background Technology

[0002] Soft-pack batteries are widely used in the starting power supply of new energy vehicles due to their advantages of high safety, high energy density, light weight and low internal resistance.

[0003] Currently, pouch batteries require a housing to be prepared during assembly, and then the cell support module, cell module and other components are installed on the housing respectively. For example, the pouch battery module with the publication number "CN220155685U" previously applied for by our company is assembled in the above manner.

[0004] The above assembly process requires sequential installation, which makes the process cumbersome, time-consuming, labor-intensive, and inefficient, resulting in increased costs and making it unsuitable for complex application scenarios. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a soft-pack battery module. When assembling this battery module, the cell module and cell support module are first assembled into a cell module assembly outside the housing. Then, a first PCBA board is attached to this cell module assembly. After all components are assembled, they are all installed into the housing cavity. Compared to the existing technology that sequentially installs the cell support module, cell module, and PCBA board into the housing, this installation method is simpler, faster, saves time and effort, and has higher installation efficiency, thereby reducing costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pouch battery module, comprising,

[0008] A battery cell module having electrode tabs, and the battery cell module having a length direction, the electrode tabs extending along the length direction;

[0009] A cell support module has one side fixed to the cell module as a cell module assembly via an electrode tab, and is electrically connected to the cell support element on the cell support module.

[0010] The first PCBA board is mounted on the cell support module, and the first PCBA board is also electrically connected to the electrode tabs and the cell support elements respectively.

[0011] The housing has an internal housing chamber that extends vertically upward and opens to the outside of the housing. The battery cell module assembly is installed vertically downward in the housing chamber through the opening on the housing.

[0012] Preferably, the battery cell module comprises, in a vertically upward direction, the following components:

[0013] One pressure plate, several foam pads, and multiple soft-pack battery cells;

[0014] The pressure plate serves as the lower surface of the battery cell module, and a foam and two soft-pack battery cells serve as the base units. The pressure plate and multiple base units are stacked vertically upwards, and the pressure plate is in contact with the foam on one of the base units; each of the soft-pack battery cells has an electrode tab.

[0015] Preferably, the battery cell support module has an opening that corresponds to the electrode tab, the electrode tab is inserted into the battery cell support module along the length direction through the opening, and the battery cell support module is fixed to the pressure plate along the length direction.

[0016] The battery cell support element consists of a positive copper busbar and a negative copper busbar. The electrode tabs pass through the opening and are bent before being electrically connected to the positive copper busbar and the negative copper busbar, respectively.

[0017] The first PCBA board is electrically connected to the electrode tabs;

[0018] The battery cell module, electrode tabs, positive copper busbar, negative copper busbar, and first PCBA board form a current loop.

[0019] Furthermore, the pressure plate has two mounting ears on one side wall. After being bent, the two mounting ears correspond to the battery cell support module. The two mounting ears are provided with mounting ear threaded holes. The battery cell support module is provided with a battery cell support module threaded hole that matches the mounting ear threaded hole. The mounting ear threaded hole and the battery cell support module threaded hole are threaded together to install the first bolt.

[0020] Preferably, the first PCBA board has a plurality of nickel sheets, positioning holes and first fixing holes;

[0021] The battery cell support module is provided with a first PCBA board mounting position, and the first PCBA board mounting position is provided with a positioning post that matches the positioning hole and a second fixing hole that matches the first fixing hole.

[0022] The first PCBA board is positioned on the positioning post through the positioning hole and fixed to the first fixing hole and the second fixing hole by rivets. The nickel sheet is electrically connected to the electrode tab.

[0023] Preferably, a positive electrode conductive bus and a negative electrode conductive bus are provided at one end of the housing, and the direction from the positive electrode conductive bus to the negative electrode conductive bus is taken as the width direction of the housing, and this width direction is perpendicular to the length direction. A positive electrode conductive bus connection terminal, an adapter bus, a communication PIN pin, and a negative electrode conductive bus connection terminal are sequentially provided along the width direction on one inner sidewall of the housing cavity.

[0024] The first PCBA board has a connector, which is electrically connected to a plurality of nickel plates. The positive electrode busbar connection terminal is electrically connected to the positive electrode busbar, and the negative electrode busbar connection terminal is electrically connected to the negative electrode busbar.

[0025] Preferably, when the battery cell module assembly is installed in the housing cavity, the pressure plate is located at the top layer of the housing cavity; a second PCBA board is installed on the upper surface of the pressure plate located at the top layer, and the second PCBA board is respectively sleeved with the positive electrode conductive bus connection terminal, the adapter bus, the communication PIN pin and the negative electrode conductive bus connection terminal.

[0026] Preferably, the second PCBA board is provided with a plurality of vias and pressfit holes. The positive conductive bus connection terminal has a positive conductive bus pin, and the negative conductive bus connection terminal has a negative conductive bus pin. The vias correspond to the positive conductive bus pin, the adapter bus, and the negative conductive bus pin. The second PCBA board is fitted onto the positive conductive bus pin, the adapter bus, and the negative conductive bus pin through the vias. The pressfit holes correspond to the communication pins. The second PCBA board is fitted onto the communication pins through the pressfit holes.

[0027] Preferably, the nickel sheet is electrically connected to the connector, the connector, the positive electrode bus pin, the adapter bus, and the negative electrode bus pin are electrically connected to the second PCBA board, the communication pin is communicatively connected to the second PCBA board and one end of the communication pin extends out of the housing, one end of the positive adapter bus is electrically connected to the positive copper bus and the other end is electrically connected to the adapter bus, and the negative adapter bus is electrically connected to one end of the negative copper bus and the other end is electrically connected to another adapter bus.

[0028] Preferably, the battery module further includes a top cover, which is fixed vertically downward at the opening of the housing cavity, and the battery cell module assembly, the first PCBA board, and the second PCBA board are all covered by the top cover.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] 1. The battery module of this utility model includes: a cell module having electrode tabs, and the cell module having a length direction, the electrode tabs extending along the length direction; a cell support module, one side of which is fixed to the cell module as a cell module assembly via the electrode tabs, and electrically connected to the cell support elements on the cell support module; a first PCBA board, mounted on the cell support module, and the first PCBA board is also electrically connected to the electrode tabs and the cell support elements respectively; and a housing having a housing chamber inside, the housing chamber extending vertically... Extending upwards and opening outwards from the housing, the battery cell module assembly is installed vertically downwards into the housing cavity through the opening on the housing. The purpose is to first assemble the battery cell module and battery cell support module into a battery cell module assembly outside the housing, then connect the first PCBA board to this battery cell module assembly, and finally install it into the housing cavity after all the components are assembled. Compared with the existing technology that sequentially installs the battery cell support module, battery cell module and PCBA board into the housing, the installation method is simpler and faster, saves time and effort, has high installation efficiency, and thus reduces costs.

[0031] 2. The battery cell module of this utility model includes a pressure plate, several foams, and multiple soft-pack battery cells in a vertically upward direction. The pressure plate serves as the lower surface of the battery cell module, and one foam and two soft-pack battery cells serve as basic units. The pressure plate and multiple basic units are stacked vertically upward, and the pressure plate is in contact with the foam on one of the basic units. Each soft-pack battery cell has an electrode tab. The purpose of using the above-mentioned special battery cell module structure is to effectively simplify the battery cell assembly tooling.

[0032] 3. Because the battery cell support module in this utility model discloses that the battery cell support module has an opening, the opening corresponds to the electrode tab, the electrode tab is inserted into the battery cell support module through the opening, and the insertion direction is taken as the length direction, the battery cell support module is fixed on the pressure plate along the length direction; the battery cell support element is a positive copper busbar and a negative copper busbar, the electrode tab passes through the opening and is bent and then electrically connected to the positive copper busbar and the negative copper busbar respectively; the first PCBA board is electrically connected to the electrode tab; the battery cell module, electrode tab, positive copper busbar, negative copper busbar and the first PCBA board form a current loop; the purpose is to realize the functions of battery cell temperature acquisition and voltage acquisition.

[0033] 4. Because the battery cell support module of this utility model discloses that the first PCBA board has a plurality of nickel sheets, positioning holes and first fixing holes respectively; the battery cell support module is provided with a first PCBA board mounting position, and the first PCBA board mounting position is provided with positioning posts that match the positioning holes and second fixing holes that match the first fixing holes respectively; the first PCBA board is positioned on the positioning posts through the positioning holes and fixed on the first fixing holes and the second fixing holes by rivets, the purpose of which is to fix the first PCBA board.

[0034] 5. Because the battery cell support module of this utility model discloses that a positive electrode conductive bus and a negative electrode conductive bus are provided at one end of the housing, and the direction from the positive electrode conductive bus to the negative electrode conductive bus is taken as the width direction of the housing, and this width direction is perpendicular to the length direction. A positive electrode conductive bus connection terminal, an adapter bus, a communication PIN pin and a negative electrode conductive bus connection terminal are sequentially provided along the width direction on an inner side wall of the housing cavity. A connector is provided on the first PCBA board; the connector is electrically connected to several nickel strips, the positive electrode conductive bus connection terminal is electrically connected to the positive electrode conductive bus, and the negative electrode conductive bus connection terminal is electrically connected to the negative electrode conductive bus; the purpose is to electrically connect the positive and negative electrodes of the battery cell to the housing.

[0035] 6. Because the battery cell support module in this utility model discloses that when the battery cell module assembly is installed in the housing cavity, the pressure plate is located at the top layer of the housing cavity; a second PCBA board is installed on the upper surface of the pressure plate located at the top layer. The second PCBA board is respectively connected to the positive electrode conductive bus connection terminal, the adapter bus, the communication PIN pin and the negative electrode conductive bus connection terminal. The purpose is to electrically connect the second PCBA board to the positive and negative electrodes of the housing, the positive electrode and its negative electrode of the battery cell, and to make signal connection with the communication PIN pin.

[0036] 7. Because the battery cell support module in this utility model discloses that the second PCBA board is provided with a number of vias and pressfit holes, the positive conductive bus connection terminal has a positive conductive bus pin, the negative conductive bus connection terminal has a negative conductive bus pin, and the vias correspond to the positive conductive bus pin, the adapter bus and the negative conductive bus pin. Through the vias, the second PCBA board is fitted onto the positive conductive bus pin, the adapter bus and the negative conductive bus pin. The pressfit holes correspond to the communication pins. Through the pressfit holes, the second PCBA board is fitted onto the communication pins. The purpose is to realize the signal connection between the second PCBA and the shell without the risk of short circuit.

[0037] 8. Because the battery cell support module in this utility model discloses that the battery module also includes a top cover, which is fixed vertically downward at the opening of the housing cavity, and the battery cell module assembly, the first PCBA board, and the second PCBA board are all covered by the top cover, the purpose of which is to cover the components inside the housing and play a protective role. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of this utility model;

[0039] Figure 2 This is an exploded view of the present invention;

[0040] Figure 3 for Figure 2Enlarged view of part of the exploded view;

[0041] Figure 4 This is a schematic diagram of the battery cell module in this utility model;

[0042] Figure 5 This is a schematic diagram of the battery cell support module in this utility model;

[0043] Figure 6 for Figure 4 Enlarged view showing the position of the central opening in the cell support module;

[0044] Figure 7 This is a schematic diagram of the shell structure in this utility model;

[0045] Figure 8 This is a schematic diagram of the structure of the first PCBA board in this utility model;

[0046] Figure 9 This is a schematic diagram of the structure of the second PCBA board in this utility model;

[0047] Figure 10 This is a schematic diagram of the assembled structure of the battery cell module, battery cell support module, and first PCBA board in this utility model;

[0048] Figure 11 This is a schematic diagram of the structure of the upper cover in this utility model;

[0049] Figure 12 This is an exploded view of the assembly of the battery cell module, battery cell support module, and first PCBA board in this utility model, and the housing. The arrow indicates the length direction of the assembly toward the inside of the housing.

[0050] Figure 13 This is a partially enlarged exploded view of the present invention;

[0051] Figure 14 This is a schematic diagram of the overall structure of the present invention after the battery cell module, battery cell bracket module, and first PCBA board are assembled and installed inside the housing;

[0052] Figure 15 This is a schematic diagram of the structure of the present invention, in which the battery cell module, battery cell bracket module, and first PCBA board are assembled and installed inside the housing, and then the second PCBA board is assembled.

[0053] In the figure: housing 100, positive conductive busbar 101, positive conductive busbar connection terminal 1011, positive conductive busbar PIN pin 1012, nested nut 102, adapter busbar 103, communication PIN pin 104, negative conductive busbar 105, negative conductive busbar connection terminal 1051, negative conductive busbar PIN pin 1052, housing chamber 106, housing installation position 107, upper cover 200, upper cover screw installation position 210, upper cover glue groove 220, first screw 300, cell module 400, pressing plate 410, mounting ear 4101, foam 420, soft-pack cell 430, electrode tab 440, cell support module 500, cell support 510, opening 5101, positive copper busbar 520, negative copper busbar 530, first PCBA board 600, nickel strip 610, first fixing hole 620, positioning hole 630, connector 640, rivet 700, wire 800, second PCBA board 900, Pressfit hole 910, via hole 920, second screw 1000, sealant 1100, lock nut 1200, positive adapter busbar 1300, negative adapter busbar 1400. Detailed implementation manners

[0054] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the following embodiments will specifically elaborate on the technical solutions of the present utility model in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are used to help understand the present utility model, but do not constitute a limitation to the present utility model.

[0055] It should be noted that for the present utility model,

[0056] 1. Pressfit PIN pin refers to a PIN pin that realizes electrical connection through a press-fit process; Pressfit Chinese name: press-fitting;

[0057] 2. Functions of the first PCBA board 600: (1) Used for welding electrode tabs 640 to achieve the series connection of soft-pack cells 430 in the cell module; (2) Cell voltage acquisition;

[0058] 3. Functions of the second PCBA board 900: It is the management system hardware board of the battery module to realize various functions of the battery.

[0059] As Figure 1-15 shown, a soft-pack battery module includes

[0060] A cell module 400, which has electrode tabs 440, and the cell module 400 has a length direction A, and the electrode tabs 440 extend along the length direction A; specifically, the cell module 400 sequentially includes, in the upward direction along the vertical direction

[0061] One pressure plate 410, several foams 420, multiple soft-pack battery cells 430;

[0062] The pressure plate 410 serves as the lower surface of the cell module 400. A foam 420 and two soft-pack cells 430 serve as the base unit. The pressure plate 410 and multiple base units are stacked vertically upwards, and the pressure plate 410 is in contact with the foam 420 on one of the base units. Each soft-pack cell 430 has an electrode tab 440 (it should be noted that the electrode tab 400 on the cell module 400 is the same as the electrode tab 440 on the soft-pack cell 430).

[0063] The copper busbar of the battery cell support module 500 is laser-welded to the battery cell module 500 via electrode tabs 440 to form a battery cell module assembly, and is electrically connected to the battery cell support elements on the battery cell support module 500.

[0064] The first PCBA board 600 is mounted on the cell support module 500, and the first PCBA board 600 is also electrically connected to the electrode tab 440 and the cell support element respectively.

[0065] The housing 100 has a housing chamber 106 inside, which extends vertically upward and opens to the outside of the housing 100. The battery cell module assembly is installed vertically downward in the housing chamber 106 through the opening on the housing 100. Specifically, when the battery cell module assembly is placed into the housing chamber 106, a nested nut 102 is installed on the housing chamber 106, and the nested nut 102 extends vertically upward. The edge of the pressure plate 410 is provided with a pressure plate screw hole that matches the nested nut 102. The pressure plate 410 is fixed in the housing chamber 106 by a second screw 1000 being screwed vertically downward into the pressure plate screw hole and the nested nut 102 in sequence (e.g., Figure 6 (as shown);

[0066] The cell support module 500 has an opening 5101, which corresponds to the electrode tab 440. The electrode tab 440 is inserted into the cell support module 500 along the length direction A through the opening 5101, and the cell support module 500 is fixed on the pressure plate 510 along the length direction A.

[0067] The battery cell support components are a positive copper busbar 520 and a negative copper busbar 530. The electrode tabs 440 pass through the opening 5101 and are bent to be electrically connected to the positive copper busbar 520 and the negative copper busbar 530 respectively. (It should be noted that the positive copper busbar 520 and the negative copper busbar 530 are fixed to the battery cell support 510 by a hot riveting process. The battery cell support 510 is a part of the battery cell support module 500.)

[0068] The first PCBA board 600 is electrically connected to the electrode tab 440;

[0069] The battery cell module 400, several electrode tabs 440, positive copper busbar 520, negative copper busbar 530 and the first PCBA board 600 form a current loop, that is, the current loop is: the current of the electrode tabs 440 flows through the nickel sheet 610 on the first PCBA board 600 to the connector 640 on the first PCBA board 600.

[0070] The pressure plate 410 has two mounting ears 4101 on one side wall. After being bent, the two mounting ears 4101 correspond to the cell support module 500. The two mounting ears 4101 are provided with mounting ear threaded holes. The cell support module 500 is provided with a cell support module threaded hole that matches the mounting ear threaded hole. The mounting ear threaded hole and the cell support module threaded hole are threaded together to install the first bolt.

[0071] The first PCBA board 600 has several nickel sheets 610, positioning holes 630 and first fixing holes 620 respectively;

[0072] The battery cell bracket module 500 is provided with a first PCBA board mounting position, and the first PCBA board mounting position is provided with a positioning post that matches the positioning hole 630 and a second fixing hole that matches the first fixing hole 620.

[0073] The first PCBA board 600 is positioned on the positioning post through the positioning hole 630 and fixed on the first fixing hole 620 and the second fixing hole by the rivet 700 (specifically, SR nylon rivet). The nickel sheet 610 is electrically connected to the electrode tab 440; specifically, the nickel sheet 610 and the electrode tab 440 are laser welded together.

[0074] A positive electrode conductive bus 101 (conical cylinder) and a negative electrode conductive bus 105 (conical cylinder) are provided at one end of the housing 100. The direction from the positive electrode conductive bus 101 to the negative electrode conductive bus 105 is defined as the width direction D of the housing 100, and this width direction D is perpendicular to the length direction A. A positive electrode conductive bus connection terminal 1011, an adapter bus 103, a communication PIN pin 104, and a negative electrode conductive bus connection terminal 1051 are sequentially provided along the width direction D on one inner side wall of the housing cavity 106.

[0075] The first PCBA board 600 has a connector 640; the connector 640 is electrically connected to a plurality of nickel sheets 610, the positive electrode conductive bus connection terminal 1011 is electrically connected to the positive electrode conductive bus 101, and the negative electrode conductive bus connection terminal 1051 is electrically connected to the negative electrode conductive bus 105.

[0076] When the battery cell module assembly is installed in the housing chamber 106, the pressure plate 410 is located at the top of the housing chamber 106. A second PCBA board 900 is installed on the upper surface of the pressure plate 106 at the top. The second PCBA board 900 is respectively connected to the positive electrode conductive bus connection terminal 1011, the adapter bus 106, the communication PIN pin 104 and the negative electrode conductive bus connection terminal 1051.

[0077] The second PCBA board 900 is provided with a number of vias 920 and pressfit holes 910. The positive conductive bus connection terminal 1101 has a positive conductive bus PIN 1012, and the negative conductive bus connection terminal 105 has a negative conductive bus PIN 1052. The vias 920 correspond to the positive conductive bus PIN 1012, the adapter bus 103, and the negative conductive bus PIN 1052. The second PCBA board 900 is sleeved on the positive conductive bus PIN 1012, the adapter bus 103, and the negative conductive bus PIN 1052 through the vias 920. The pressfit holes 910 correspond to the communication PIN pin 104. The second PCBA board 900 is sleeved on the communication PIN pin 104 through the pressfit holes 910.

[0078] Additionally, the nickel plate 610 is electrically connected to the connector 640. The connector 640, positive electrode busbar PIN 1012, adapter busbar 103, and negative electrode busbar PIN 1052 are electrically connected to the second PCBA board 900. (The connector 640 and the second PCBA board 900 are electrically connected via wire 800, which is plugged into the connector and the second PCBA board 900.) The communication PIN 104 is connected to the second PCBA board 900, with one end extending out of the housing 100. One end of the positive electrode adapter busbar 1300 is electrically connected to the positive electrode copper busbar 520. (It should be noted that the positive electrode copper busbar 520 has a positive electrode copper busbar fixing post, and the positive electrode adapter busbar 1300 has a positive electrode adapter busbar through hole that matches the positive electrode copper busbar fixing post. The positive electrode adapter busbar is inserted into the positive electrode through the positive electrode adapter busbar through hole.) One end of the copper busbar is fixed on the copper busbar fixing post and secured by the locking nut 1200. The other end is electrically connected to the adapter busbar 103. The negative adapter busbar 1400 is electrically connected to one end of the negative copper busbar 530 (it should be noted that the negative copper busbar 530 is provided with a negative copper busbar fixing post, and the negative adapter busbar 1400 is provided with a negative adapter busbar through hole that matches the negative copper busbar fixing post. The negative adapter busbar is inserted into the negative copper busbar fixing post through the negative adapter busbar through hole and is also secured by the locking nut 1200). The other end is electrically connected to another adapter busbar 103. The adapter busbar 103, the positive conductive busbar PIN 1012, the positive conductive busbar connection terminal 1011, and the positive conductive busbar 101 are electrically connected. Similarly, the other adapter busbar 103, the negative conductive busbar PIN 1052, the negative conductive busbar terminal 1051, and the negative conductive busbar 105 are electrically connected.

[0079] The battery module also includes a top cover 200, which is fixed vertically downward to the opening of the housing cavity 106. The cell module assembly 400, the first PCBA board 600, and the second PCBA board 900 are all covered by the top cover 200. Specifically, the top cover 200 has a top cover cavity and a top cover groove 210. The top cover cavity matches the top cover 200 and also matches the opening on the housing 100. A sealing skirt is provided at the opening of the housing 100, and the sealing skirt extends vertically upward. The top cover groove 210... 10 is provided along the edge of the upper cover 200 and matches the sealing skirt. When the upper cover 200 is placed on the housing 100, the upper cover chamber is connected to the housing chamber 106. The upper cover groove 210 is filled with sealant 1100 and fitted onto the sealing skirt. Then, the upper cover 200 and the housing 100 are fixed with the first screw 300 (more specifically, the upper cover 200 and the housing 100 are respectively provided with screw mounting positions, namely the upper cover screw mounting position 210 and the housing mounting position 107), so as to achieve the sealing of the housing 100 by the upper cover 200 (e.g., Figure 10-13 (As shown).

[0080] This battery cell module is assembled in the following manner:

[0081] The assembled cell support module 500 is inserted into the cell module 400, so that the cell tab 440 passes through the corresponding opening 5101 on the cell support module 500. Then, the cell support module 500 and the cell module 400 are locked together with two first bolts (the threaded holes of the mounting tabs and the threaded holes of the cell support module share the same thread for the first bolts). Then, the electrode tab 440 is rolled flat, that is, after passing through the opening 5101, it is bent to be parallel to the plane on the cell support module 500, and laser welded to the positive copper busbar 520 and the negative copper busbar 530 respectively.

[0082] The first PCBA board 600 is then positioned on the positioning post through the positioning hole 630, and fixed on the first fixing hole 620 and the second fixing hole by the rivet 700 (specifically SR nylon rivet). The nickel sheet 610 is laser welded to the bent electrode tab 440, so that the battery module 400, electrode tab 440, positive copper busbar, negative copper busbar and the first PCBA board 600 form a current loop.

[0083] Then, place the entire module on a flat surface with the pressure plate 410 at the bottom. Invert the housing 100 and slowly install it downwards until it contacts the foam 420. Then, turn it over so that the bottom of the housing 100 is facing down. Then, use six second screws 1000 to lock the pressure plate 410 onto the housing 100. Install the positive electrode adapter 1300 and the negative electrode adapter 1400 onto the housing 100 and the cell support assembly 500, and then lock them with four lock nuts 1200. Specifically, the positive electrode copper busbar 520 has a positive electrode copper busbar fixing post, and the positive electrode adapter 1300 has a corresponding fixing post. The positive electrode adapter 1300 is fitted onto the positive electrode copper busbar fixing post through the positive electrode adapter 130 ...

[0084] Then, the second PCBA board 900 is pressed into the housing 100 using a tooling, so that the communication pin 104 in the housing 100 makes good contact with the hole wall of the second PCBA board 900 (specifically: through the through hole 920, the second PCBA board 900 is sleeved on the positive conductive bus pin 1012, the adapter bus 103 and the negative conductive bus pin 1052, and through the Pressfit hole 910, the second PCBA board 900 is sleeved on the communication pin 104); then, the second PCBA board 900 is locked on the pressure plate 410 with two first screws 300; then, the other pins are soldered onto the second PCBA board 900; the wires 800 are inserted into the corresponding connectors on the second PCBA board 900 and the connectors 640 on the first PCBA board 600 and glue is applied.

[0085] Finally, install the plastic top cover 200. Seal the top cover 200 with the housing 100 by applying sealant to the glue groove 220 of the top cover, then invert the top cover 200 onto the housing 100 and tighten it with four first screws 300.

[0086] It should be noted that the outer wall of the housing 100 is also provided with a housing mounting position 107, through which the battery module is installed on the new energy vehicle.

[0087] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A soft-pack battery module, characterized by: include, A battery cell module having electrode tabs, and the battery cell module having a length direction, the electrode tabs extending along the length direction; A cell support module has one side fixed to the cell module as a cell module assembly via an electrode tab, and is electrically connected to the cell support element on the cell support module. The first PCBA board is mounted on the cell support module, and the first PCBA board is also electrically connected to the electrode tabs and the cell support elements respectively. The housing has an internal housing chamber that extends vertically upward and opens to the outside of the housing. The battery cell module assembly is installed vertically downward in the housing chamber through the opening on the housing.

2. The soft-pack battery module according to claim 1, characterized in that: The battery cell module comprises, in a vertically upward direction, the following components: One pressure plate, several foam pads, and multiple soft-pack battery cells; The pressure plate is used as the lower surface of the battery cell module, and a foam and two soft-pack battery cells are used as the base unit. The pressure plate and multiple base units are stacked vertically upwards, and the pressure plate is in contact with the foam on one of the base units. Each of the aforementioned pouch cells has electrode tabs.

3. A soft-pack battery module according to claim 2, characterized in that: The battery cell support module has an opening that corresponds to the electrode tab. The electrode tab is inserted into the battery cell support module along the length direction through the opening, and the battery cell support module is fixed to the pressure plate along the length direction. The battery cell support element consists of a positive copper busbar and a negative copper busbar. The electrode tabs pass through the opening and are bent before being electrically connected to the positive copper busbar and the negative copper busbar, respectively. The first PCBA board is electrically connected to the electrode tabs; The battery cell module, electrode tabs, positive copper busbar, negative copper busbar, and first PCBA board form a current loop.

4. A soft-pack battery module according to claim 3, characterized in that: The first PCBA board has several nickel strips, positioning holes and first fixing holes; The battery cell support module is provided with a first PCBA board mounting position, and the first PCBA board mounting position is provided with a positioning post that matches the positioning hole and a second fixing hole that matches the first fixing hole. The first PCBA board is positioned on the positioning post through the positioning hole and fixed to the first fixing hole and the second fixing hole by rivets. The nickel sheet is electrically connected to the electrode tab.

5. A soft-pack battery module according to claim 4, characterized in that: A positive electrode conductive bus and a negative electrode conductive bus are provided at one end of the housing, and the direction from the positive electrode conductive bus to the negative electrode conductive bus is taken as the width direction of the housing, and this width direction is perpendicular to the length direction. A positive electrode conductive bus connection terminal, an adapter bus, a communication PIN pin, and a negative electrode conductive bus connection terminal are sequentially provided along the width direction on one inner side wall of the housing cavity. The first PCBA board has a connector; the connector is electrically connected to a plurality of nickel plates, the positive electrode busbar connection terminal is electrically connected to the positive electrode busbar, and the negative electrode busbar connection terminal is electrically connected to the negative electrode busbar.

6. A soft-pack battery module according to claim 5, characterized in that: When the battery cell module assembly is installed in the housing cavity, the pressure plate is located at the top layer of the housing cavity; a second PCBA board is installed on the upper surface of the pressure plate at the top layer, and the second PCBA board is respectively sleeved with the positive electrode conductive bus connection terminal, the adapter bus, the communication PIN pin and the negative electrode conductive bus connection terminal.

7. A soft-pack battery module according to claim 6, characterized in that: The second PCBA board is provided with several vias and pressfit holes. The positive conductive bus connection terminal has a positive conductive bus pin, and the negative conductive bus connection terminal has a negative conductive bus pin. The vias correspond to the positive conductive bus pin, the adapter bus, and the negative conductive bus pin. The second PCBA board is fitted onto the positive conductive bus pin, the adapter bus, and the negative conductive bus pin through the vias. The pressfit holes correspond to the communication pins. The second PCBA board is fitted onto the communication pins through the pressfit holes.

8. A soft-pack battery module according to claim 7, characterized in that: The battery module also includes a top cover, which is fixed vertically downward at the opening of the housing cavity, and the battery cell module assembly, the first PCBA board, and the second PCBA board are all covered by the top cover.

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