Pouch battery and power tool

Abstract

The application discloses a soft package battery and an electric tool, and relates to the battery technical field.The soft package battery comprises a shell, a support, a battery cell and a circuit board assembly arranged in the shell; the support is provided with a first mounting plate and a second mounting plate which are perpendicular to each other, the first mounting plate is parallel to the bottom surface of the shell, and the second mounting plate is perpendicular to the bottom surface of the shell; the battery cell is accommodated in a corner defined by the first mounting plate and the second mounting plate; the circuit board assembly comprises a first circuit board and a second circuit board which are electrically connected, the first circuit board is arranged on the side of the first mounting plate away from the battery cell, and the second circuit board is arranged on the side of the second mounting plate close to the battery cell and is electrically connected with the battery cell.The above-mentioned soft package battery can be optimized in layout of the support and the circuit board assembly, so that the internal space utilization rate of the soft package battery is improved, and the heat dissipation efficiency is considered.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a soft-pack battery and a power tool. Background Technology

[0002] Due to their high energy density and flexible shape, pouch batteries are beginning to be used in power tools, portable devices, and other fields. Internally, they require circuit board assemblies to enable functions such as cell series connection and status monitoring. Pouch batteries need to compactly house the cells and circuit board assemblies to reduce overall size while simultaneously meeting thermal management isolation requirements.

[0003] Traditional pouch cell layouts struggle to simultaneously optimize these requirements. Simply stacking circuit boards and cells leads to conflicting heat dissipation paths or inefficient space utilization. Therefore, there is an urgent need for a pouch cell that integrates the spatial relationship between circuit board components and cells through a three-dimensional internal layout, balancing heat dissipation efficiency and compactness. Utility Model Content

[0004] The purpose of this invention is to provide a soft-pack battery and power tool that can improve the utilization rate of the internal space of the soft-pack battery while taking into account heat dissipation efficiency.

[0005] The embodiments of this utility model are implemented as follows:

[0006] In one aspect, this utility model provides a soft-pack battery, including a housing and a bracket, a battery cell, and a circuit board assembly disposed within the housing; the bracket has a first mounting plate and a second mounting plate perpendicular to each other, the first mounting plate being parallel to the bottom surface of the housing and the second mounting plate being perpendicular to the bottom surface of the housing; the battery cell is housed in a corner defined by the first mounting plate and the second mounting plate; the circuit board assembly includes a first circuit board and a second circuit board electrically connected, the first circuit board being disposed on the side of the first mounting plate away from the battery cell, and the second circuit board being disposed on the side of the second mounting plate close to the battery cell and electrically connected to the battery cell.

[0007] Optionally, a support member is provided on the side of the first mounting plate opposite to the battery cell, and a first circuit board is disposed on the top of the support member and spaced apart from the first mounting plate.

[0008] Optionally, there may be multiple support members, which are arranged at intervals; the extension directions of any two adjacent support members may be perpendicular or parallel to each other.

[0009] Optionally, the first circuit board and the second circuit board are electrically connected by a ribbon cable; the second mounting plate has a ribbon cable hole that penetrates its thickness, and the ribbon cable is electrically connected to the first circuit board and the second circuit board through the ribbon cable hole respectively.

[0010] Optionally, a cable tray is provided on the side of the second mounting plate away from the battery cell, with the cable tray hole located at the end of the cable tray and the cable portion accommodated within the cable tray.

[0011] Optionally, the bracket also has a side plate connecting the first mounting plate and the second mounting plate; the side plate, the first mounting plate, the second mounting plate and the inner wall of the housing together enclose a cavity for accommodating the battery cell.

[0012] Optionally, the side plate has a potting hole that extends through its thickness, and the potting hole corresponds to the position of the electrode tab of the battery cell; the potting hole is used to fill the electrode tab with sealant.

[0013] Optionally, a temperature detector is connected to the first circuit board, and the first mounting plate has a through hole that penetrates its thickness; the temperature detector passes through the through hole and contacts the battery cell to measure the temperature value of the battery cell.

[0014] Optionally, a positioning post is provided on the side of the first mounting plate opposite to the battery cell, and a positioning hole is provided on the first circuit board corresponding to the positioning post. The positioning post passes through the positioning hole to limit the planar displacement of the first circuit board. An elastic element is sleeved on the outer wall of the positioning post, and the end of the elastic element abuts against the inner wall of the locking element of the soft-pack battery.

[0015] In another aspect, this utility model provides an electric tool that can be detachably fitted with the aforementioned pouch battery.

[0016] The beneficial effects of this utility model include:

[0017] This application provides a pouch battery, including a housing and a support, a battery cell, and a circuit board assembly disposed within the housing. The support has a first mounting plate and a second mounting plate perpendicular to each other. The first mounting plate is parallel to the bottom surface of the housing, and the second mounting plate is perpendicular to the bottom surface of the housing, allowing the support to adapt to the internal structure of the housing, making full use of the three-dimensional space within the housing and greatly improving space utilization. The battery cell is housed in the corner defined by the first and second mounting plates, allowing the support to provide a certain degree of protection and cushioning for the battery cell, limiting and fixing the battery cell while reducing the possibility of mechanical damage to the battery cell. The circuit board assembly includes a first circuit board and a second circuit board electrically connected. The first circuit board is disposed on the side of the first mounting plate away from the battery cell, and the second circuit board is disposed on the side of the second mounting plate close to the battery cell and electrically connected to the battery cell. By placing the first and second circuit boards at different positions on the support, reasonable zoning of battery management functions is achieved, improving the management efficiency of the pouch battery. Furthermore, by mounting the first and second circuit boards on different sides of the support, the space around the support is fully utilized, avoiding overlap between circuit boards and excessive space occupation, further improving the utilization rate of the internal space of the battery, and also facilitating heat dissipation, thus improving the reliability and service life of the pouch battery. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 One of the structural schematic diagrams of the soft-pack battery provided in the embodiments of this utility model;

[0020] Figure 2 This is the second schematic diagram of the structure of the soft-pack battery provided in the embodiment of this utility model;

[0021] Figure 3 The third schematic diagram of the structure of the soft-pack battery provided in this embodiment of the utility model;

[0022] Figure 4 Fourth schematic diagram of the structure of the soft-pack battery provided in this embodiment of the present utility model;

[0023] Figure 5 The fifth schematic diagram of the structure of the soft-pack battery provided in the embodiment of this utility model.

[0024] Icons: 100-Pack battery; 110-Casing; 120-Cell; 121-Taper; 131-First circuit board; 1311-Temperature detector; 1312-Positioning hole; 132-Second circuit board; 140-Bracket; 141-First mounting plate; 1411-Support; 1412-Through hole; 1413-Positioning post; 142-Second mounting plate; 1421-Cable hole; 1422-Cable groove; 143-Side plate; 1431-Pouring hole; 150-Cable; 160-Elastic element; 170-Locking element; 171-Push-up part; 172-Locking part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Please refer to Figure 1This embodiment provides a soft-pack battery 100, including a housing 110 and a bracket 140, a battery cell 120, and a circuit board assembly disposed within the housing 110. The bracket 140 has a first mounting plate 141 and a second mounting plate 142 that are perpendicular to each other. The first mounting plate 141 is parallel to the bottom surface of the housing 110, and the second mounting plate 142 is perpendicular to the bottom surface of the housing 110. The battery cell 120 is housed in a corner defined by the first mounting plate 141 and the second mounting plate 142. The circuit board assembly includes a first circuit board 131 and a second circuit board 132 that are electrically connected. The first circuit board 131 is disposed on the side of the first mounting plate 141 away from the battery cell 120, and the second circuit board 132 is disposed on the side of the second mounting plate 142 close to the battery cell 120 and is electrically connected to the battery cell 120.

[0032] Specifically, such as Figure 1 As shown, the pouch battery 100 includes a housing 110, within which a support 140 is disposed. The support 140 includes a first mounting plate 141 and a second mounting plate 142 that are perpendicular to each other. The first mounting plate 141 and the second mounting plate 142 form an L-shaped structure, such that the inner wall of the support 140 and the inner wall of the housing 110 enclose a space for accommodating the battery cell 120. This provides a fixing and limiting effect on the battery cell 120, while also providing some protection and cushioning for the battery cell 120, reducing the possibility of mechanical damage to the battery cell 120. Multiple battery cells 120 are stacked within this accommodating space.

[0033] like Figure 1 As shown, the circuit board assembly includes a first circuit board 131 and a second circuit board 132 electrically connected. The first circuit board 131 is disposed on the side of the first mounting plate 141 opposite to the battery cell 120, and is mainly responsible for monitoring and controlling the voltage, current acquisition, and charge / discharge status of the battery cell 120. The second circuit board 132 is disposed on the side of the second mounting plate 142 close to the battery cell 120 and is electrically connected to the tab 121 of the battery cell 120, so that multiple battery cells 120 are connected in series. By mounting the first circuit board 131 and the second circuit board 132 on different sides of the bracket 140, the space around the bracket 140 is fully utilized, avoiding mutual overlap and excessive space occupation between the circuit boards, further improving the utilization rate of the internal space of the battery, and optimizing the heat dissipation efficiency of the two circuit boards. In addition, this circuit board layout with clear functional partitioning and collaborative operation greatly improves the performance and efficiency of the battery management system.

[0034] For example, please combine Figure 2 and Figure 3A support member 1411 protrudes from the side of the first mounting plate 141 opposite to the battery cell 120. A first circuit board 131 is disposed on the top of the support member 1411 and spaced apart from the first mounting plate 141. The support member 1411 provides a stable mounting carrier for the first circuit board 131.

[0035] The first circuit board 131 is disposed on the top of the support member 1411, so that an air flow gap is formed between the first circuit board 131 and the first mounting plate 141, which can accelerate the dissipation of heat generated by the first circuit board 131 during operation, avoid heat accumulation between the circuit board and the mounting plate, and avoid the problem of poor heat dissipation caused by traditional close-fitting installation.

[0036] It should be noted that, firstly, the protrusion height of the support member 1411 can be flexibly set according to the relative interval between the first circuit board 131 and the top of the housing 110, as long as the installation position of the first circuit board 131 in the housing 110 is accurate and interference with the top of the housing 110 is avoided.

[0037] Secondly, in one specific embodiment of this application, the support member 1411 can be a cylindrical structure or a rectangular block structure. Of course, it can also be other shapes that can stably support the first circuit board 131. This application does not impose any restrictions on the specific structure of the support member 1411, as long as it can provide stable support for the first circuit board 131.

[0038] Optionally, such as Figure 3 As shown, to prevent the first circuit board 131 from deforming due to uneven stress, multiple support members 1411 are arranged at intervals to form heat dissipation channels, further enhancing airflow efficiency and accelerating heat dissipation. Simultaneously, the space between two support members 1411 can also accommodate solder joints, wiring, and other components, preventing structural interference between the support members 1411 and other parts, thus improving space utilization. The extension directions of any two adjacent support members 1411 are perpendicular or parallel to each other, allowing the extension direction of the support members 1411 to be flexibly adjusted according to the placement of components on the surface of the first mounting plate 141 or electronic components on the surface of the first circuit board 131, further improving the flexibility and assembly stability of the pouch battery 100.

[0039] For example, such as Figure 4 As shown, the first circuit board 131 and the second circuit board 132 are electrically connected by a ribbon cable 150; the second mounting plate 142 has a ribbon cable hole 1421 that penetrates its thickness, and the ribbon cable 150 is electrically connected to the first circuit board 131 and the second circuit board 132 through the ribbon cable hole 1421 respectively.

[0040] Specifically, such as Figure 4As shown, the first circuit board 131 and the second circuit board 132 are electrically connected via a ribbon cable 150 to accommodate the spatial differences between the first circuit board 131 and the second circuit board 132, thus improving the flexibility of the electrical connection. Since the second circuit board 132 is located on the side of the second mounting plate 142 closest to the battery cell 120 (i.e., the second circuit board 132 is located on the inner wall of the bracket 140), and the first circuit board 131 is located on the side of the first mounting plate 141 away from the battery cell 120 (i.e., the first circuit board 131 is located on the outer wall of the bracket 140), the second mounting plate 142 has a ribbon cable hole 1421 to facilitate the passage of the ribbon cable 150, ensuring an orderly routing of the ribbon cable 150 within the housing 110. Furthermore, the ribbon cable 150 passes through the ribbon cable hole 1421, and the hole wall provides some constraint and protection for the ribbon cable 150, reducing the possibility of the ribbon cable 150 shaking due to vibration of the soft-pack battery 100, which could lead to poor contact between the first circuit board 131 and the second circuit board 132.

[0041] In this embodiment, the cable routing hole 1421 is located on the side of the second mounting plate 142 away from the first mounting plate 141, and the cable routing hole 1421 opens on the side away from the first mounting plate 141. That is to say, the periphery of the cable routing hole 1421 is not completely closed, and the cable 150 can be inserted into the cable routing hole 1421 through the open side for installation, thereby making the installation of the cable 150 more convenient.

[0042] Optionally, such as Figure 4 As shown, the second mounting plate 142 has a cable tray 1422 on the side opposite to the battery cell 120. The cable tray hole 1421 is located at the end of the cable tray 1422, and the cable 150 is partially accommodated in the cable tray 1422. The cable tray 1422 has a certain depth to provide dedicated space for the cable 150, reducing the portion of the cable 150 protruding from the outer wall of the bracket 140 and improving the space utilization rate within the housing 110. The cable tray 1422 is set along a preset trajectory, which can limit the direction of the cable 150. When the cable 150 is partially placed in the cable tray 1422, the assembly stability of the cable 150 can be further improved.

[0043] Preferably, the cable hole 1421 is connected to one end of the cable groove 1422, and the cable 150, after passing through the cable hole 1421, can be directly bent and attached to the cable groove 1422. In one specific embodiment of this application, the cable groove 1422 is an open groove arranged vertically on the outer wall of the second mounting plate 142, and the cable hole 1421 is located on the end side of the cable groove 1422, which further improves the stability of the attachment of the cable 150 to the cable groove 1422.

[0044] It should be noted that this application does not impose any restrictions on the width of the cable tray 1422. The width of the cable tray 1422 can be equal to the width of the cable 150 to improve the assembly stability of the cable 150. The width of the cable tray 1422 can also be slightly larger than the width of the cable 150 to improve the assembly convenience of the cable 150.

[0045] In one possible implementation of this application, such as Figure 2 As shown, the bracket 140 also has a side plate 143 that connects the first mounting plate 141 and the second mounting plate 142; the side plate 143, the first mounting plate 141, the second mounting plate 142 and the inner wall of the housing 110 together form a receiving cavity for accommodating the battery cell 120.

[0046] Specifically, such as Figure 2 As shown, the side plate 143 has an L-shaped structure, with one side connected to the first mounting plate 141 and the other side connected to the second mounting plate 142, thereby enhancing the connection stability of the bracket 140. The side plate 143 is located on at least one side of the bracket 140, and preferably, side plates 143 are provided on both opposite sides of the bracket 140. The side plate 143 can effectively resist the lateral force generated when the soft-pack battery 100 vibrates, and can also prevent the first mounting plate 141 and the second mounting plate 142 from deforming relative to each other due to force. Furthermore, the side plate 143, without affecting the heat dissipation of the cell 120, can form an additional barrier on the side of the cell 120, thereby limiting the displacement of the cell 120 from the side and improving the positioning accuracy of the cell 120 within the bracket 140.

[0047] Optionally, such as Figure 2 and Figure 3 As shown, the side plate 143 has a potting hole 1431 that penetrates its thickness. The potting hole 1431 corresponds to the position of the tab 121 of the battery cell 120. The potting hole 1431 is used to fill the tab 121 with sealant.

[0048] Specifically, there can be multiple potting holes 1431, which are arranged at intervals along the stacking direction of the battery cell 120 to ensure that the sealant inside the potting holes 1431 can encapsulate the tabs 121 of each battery cell 120. The potting holes 1431 penetrate the thickness of the side plate 143, providing a direct channel for the injection of sealant. This facilitates the injection of adhesive from the outside into the tab 121 area after the battery cell 120 is assembled, without the need to disassemble the bracket 140 or the battery cell 120 assembly, reducing the complexity of the manufacturing process and improving the encapsulation efficiency.

[0049] The sealant injected through the potting hole 1431 can encapsulate the tab 121 and the welding area, forming a physical barrier to prevent electrolyte leakage or external moisture and dust from entering the tab 121 area during the operation of the cell 120, thereby reducing the risk of oxidation and corrosion of the tab 121 and improving the electrical reliability of the pouch battery 100.

[0050] For example, such as Figure 2 and Figure 3 As shown, a temperature detector 1311 is connected to the first circuit board 131, and a through hole 1412 is opened on the first mounting plate 141, which penetrates the thickness of the plate. The temperature detector 1311 passes through the through hole 1412 and contacts the battery cell 120 to measure the temperature value of the battery cell 120.

[0051] Specifically, the temperature detector 1311 is connected to the first circuit board 131, integrating temperature detection and battery management functions. The first circuit board 131 can directly receive signals from the temperature detector 1311, quickly responding to temperature changes in the cell 120 and improving the safety of the pouch battery 100. The first mounting plate 141 has a through hole 1412 for the temperature detector 1311, allowing it to connect directly to the cell 120 along the through hole 1412. This eliminates the need for additional space within the housing 110 for the installation and connection of the temperature detector 1311, further improving space utilization within the housing 110.

[0052] In one possible implementation of this application, such as Figure 1 and Figure 2 As shown, a positioning post 1413 protrudes from the side of the first mounting plate 141 away from the battery cell 120. The first circuit board 131 has a positioning hole 1312 corresponding to the positioning post 1413. The positioning post 1413 passes through the positioning hole 1312 to limit the planar displacement of the first circuit board 131. An elastic member 160 is sleeved on the outer wall of the positioning post 1413. The end of the elastic member 160 abuts against the inner wall of the locking member 170 of the soft pack battery 100.

[0053] Specifically, such as Figure 1 and Figure 2 As shown, the positioning post 1413 on the first mounting plate 141 cooperates with the positioning hole 1312 of the first circuit board 131 to form a mechanical limiting structure, which directly restricts the displacement of the first circuit board 131 in the horizontal direction, ensuring that the first circuit board 131 is stable in position during battery vibration and assembly, and avoiding problems such as the ribbon cable 150 falling off or poor contact with the second circuit board 132 due to displacement.

[0054] like Figure 1 and Figure 5As shown, the pouch battery 100 also includes a locking member 170, which includes a push part 171 and a locking part 172 connected to each other. Both the push part 171 and the locking part 172 are disposed in the housing 110. The locking part 172 is used to assemble with a power tool or charger to lock the pouch battery 100 onto the power tool or charger. A clearance space is provided in the housing 110 corresponding to the push part 171 and the locking part 172. When the push part 171 is driven to move toward the clearance space, it can simultaneously drive the locking part 172 to move toward the clearance space in the housing 110. At this time, the locking part 172 is no longer located on the outer surface of the housing 110, thereby canceling the lock with the power tool or charger and realizing unlocking.

[0055] like Figure 1 As shown, an elastic element 160 is sleeved on the outer wall of the positioning post 1413, and the end of the elastic element 160 abuts against the inner wall of the locking member 170 of the pouch battery 100. Preferably, the elastic element 160 abuts against the push part 171 of the locking member 170 to achieve unlocking with less effort. When the push part 171 is driven to move toward the clearance space, the locking part 172 disengages from the power tool or charger, thereby unlocking the pouch battery. During this process, the elastic element 160 is compressed and stores energy. When the push part 171 is no longer driven, the elastic element 160 is no longer compressed and releases energy, thereby driving the locking member 170 to reset, which can lock the pouch battery 100 to the power tool or charger, or prepare for the next assembly.

[0056] In another aspect, this utility model provides an electric tool that can be detachably fitted with the aforementioned pouch battery 100.

[0057] Specifically, the power tool can slide and engage with the sliding groove on the housing 110 of the pouch battery 100 via its own sliding groove structure, allowing the battery pack to be quickly inserted into or removed from the power tool in a specific direction, simplifying the installation and removal operation. The pouch battery 100 is equipped with terminals; when the battery pack is slidably engaged with the power tool, these terminals can precisely align with the electrode plates on the power tool, forming an electrical connection to supply power to the power tool. The well-designed layout of the bracket 140 and circuit board assembly within the housing 110 of the pouch battery 100 ensures stable power output, guaranteeing the continuous and stable operation and reliability of the power tool. The specific structure and beneficial effects of the pouch battery 100 have been described in detail above and will not be repeated here.

[0058] The above description is merely an optional embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A soft-pack battery, characterized in that, The device includes a housing (110) and a bracket (140), a battery cell (120), and a circuit board assembly disposed within the housing (110). The bracket (140) has a first mounting plate (141) and a second mounting plate (142) that are perpendicular to each other. The first mounting plate (141) is parallel to the bottom surface of the housing (110), and the second mounting plate (142) is perpendicular to the bottom surface of the housing (110). The battery cell is housed in a corner defined by the first mounting plate and the second mounting plate. The circuit board assembly includes a first circuit board (131) and a second circuit board (132) that are electrically connected. The first circuit board (131) is disposed on the side of the first mounting plate (141) away from the battery cell (120), and the second circuit board (132) is disposed on the side of the second mounting plate (142) close to the battery cell (120) and is electrically connected to the battery cell (120).

2. The soft-pack battery according to claim 1, characterized in that, The first mounting plate (141) has a support member (1411) protruding on the side opposite to the battery cell (120), and the first circuit board (131) is disposed on the top of the support member (1411) and spaced apart from the first mounting plate (141).

3. The soft-pack battery according to claim 2, characterized in that, The number of the support members (1411) is multiple, and the multiple support members (1411) are arranged at intervals; the extension directions of any two adjacent support members (1411) are perpendicular or parallel to each other.

4. The soft-pack battery according to claim 1, characterized in that, The first circuit board (131) and the second circuit board (132) are electrically connected by a ribbon cable (150); the second mounting plate (142) has a ribbon cable hole (1421) that penetrates its thickness, and the ribbon cable (150) is electrically connected to the first circuit board (131) and the second circuit board (132) through the ribbon cable hole (1421).

5. The soft-pack battery according to claim 4, characterized in that, The second mounting plate (142) has a cable tray (1422) on the side opposite to the battery cell (120), the cable tray hole (1421) is located at the end of the cable tray (1422), and the cable (150) is partially housed in the cable tray (1422).

6. The soft-pack battery according to claim 1, characterized in that, The bracket (140) also has a side plate (143) connecting the first mounting plate (141) and the second mounting plate (142); the side plate (143), the first mounting plate (141), the second mounting plate (142) and the inner wall of the housing (110) together enclose a cavity for accommodating the battery cell.

7. The soft-pack battery according to claim 6, characterized in that, The side plate (143) has a potting hole (1431) that extends through its thickness. The potting hole (1431) corresponds to the position of the tab (121) of the battery cell (120). The potting hole (1431) is used to fill the tab (121) with sealant.

8. The soft-pack battery according to claim 1, characterized in that, A temperature detector (1311) is connected to the first circuit board (131), and the first mounting plate (141) has a through hole (1412) that penetrates its thickness; the temperature detector (1311) passes through the through hole (1412) and contacts the battery cell (120) to measure the temperature value of the battery cell (120).

9. The soft-pack battery according to claim 1, characterized in that, The first mounting plate (141) has a positioning post (1413) protruding on the side opposite to the battery cell (120). The first circuit board (131) has a positioning hole (1312) corresponding to the positioning post (1413). The positioning post (1413) passes through the positioning hole (1312) to limit the planar displacement of the first circuit board (131). An elastic member (160) is sleeved on the outer wall of the positioning post (1413). The end of the elastic member (160) abuts against the inner wall of the locking member of the soft pack battery.

10. A power tool, characterized in that, The pouch cell (100) of any one of claims 1-9 is removably mounted.

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