Constant temperature energy storage battery device and electric tool

Abstract

The utility model relates to a constant temperature energy storage battery device and an electric tool, the constant temperature energy storage battery device comprising: a casing, provided with an air outlet channel and at least one air inlet channel arranged relatively to each other; a control panel assembly installed in the casing; a battery assembly comprising at least two layers of energy storage modules, each layer of energy storage modules being provided with at least four energy storage batteries at intervals. A temperature control phase change assembly comprises a bottom module and at least one middle module made of phase change material, the bottom module being installed in the casing, a layer of the energy storage module being laid on the bottom module, the bottom module and at least one middle module being provided with a plurality of air guide channels passing through, each of the air guide channels separating adjacent energy storage batteries, the air outlet channel being connected to one end of the air guide channel, and the air outlet channel being connected to the other end of the air guide channel. The temperature control phase change assembly realizes dual temperature control through airflow and heat absorption, thereby being able to keep the temperature of the battery assembly stable.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a constant temperature energy storage battery device and an electric tool. Background Art

[0002] Existing electric tools include a tool device for function output and a battery device for providing electric energy to the tool device. The battery device generates heat in the process of providing electric energy, thereby increasing the temperature of the entire battery device.

[0003] For example, Chinese patent CN 116169392 A discloses a battery pack and an electric tool, wherein the battery pack comprises: a shell; a battery cell assembly disposed in the shell, wherein the battery cell assembly comprises a plurality of battery cell units; a heat absorber made of a composite phase change material, wherein the heat absorber is in thermal contact with at least one of the battery cell units to absorb heat generated by the battery cell assembly during the charging and discharging process of the battery pack; the composite phase change material comprises at least a main phase change material and phase change microcapsules.

[0004] However, the temperature control of the above-mentioned battery pack is only performed by absorbing heat through a heat absorber. Not only is the heat absorption limited, but the heat generated by the battery device is cooled through heat exchange, which requires a long cooling time and low cooling efficiency, so it needs to be improved. Utility Model Content

[0005] In order to overcome the problems existing in the related art, the embodiments of the present utility model provide a constant temperature energy storage battery device and an electric tool to solve the technical problems of single temperature rise control and low cooling efficiency.

[0006] According to a first aspect of an embodiment of the present utility model, a constant temperature energy storage battery device is provided, the constant temperature energy storage battery device comprising:

[0007] A housing, provided with an air outlet passage and at least one air inlet passage arranged opposite to each other;

[0008] A control panel assembly is installed in the housing;

[0009] The battery assembly comprises at least two layers of energy storage modules, each layer of energy storage modules being provided with at least four energy storage batteries at intervals;

[0010] The temperature-controlled phase change component comprises a bottom module and at least one middle module made of phase change material, wherein the bottom module is mounted on the casing, a layer of the energy storage module is laid on the bottom module, and the middle module separates two adjacent layers of the energy storage modules, and the bottom module and at least one middle module are provided with a plurality of through-going air guide channels, wherein the air guide channels are perpendicular to the length direction of the energy storage batteries, each of the air guide channels separates adjacent energy storage batteries, and the air outlet channel is connected to one end of the air guide channel, and the air outlet channel is connected to the other end of the air guide channel.

[0011] In one embodiment, the width of two adjacent air guide channels is greater than the minimum spacing between two adjacent energy storage batteries in the same layer, and at least part of the surface of the energy storage battery intersects with the air guide channel. The housing is provided with a confluence space, and the confluence space aggregates and connects the air guide channel and the air outlet channel.

[0012] In one embodiment, the bottom module includes a bottom phase change body and two guide holes passing through the bottom phase change body at intervals, the cross-sectional size of the guide holes is larger than the width of two adjacent air guide channels, and the guide holes are arranged corresponding to the air inlet channels.

[0013] In one embodiment, the bottom module also includes two air guide grooves spaced apart from each other on the bottom phase change body, the air guide grooves pass through the opposite sides of the bottom phase change body and are arranged parallel to the length direction of the energy storage battery, and the air guide grooves intersect with the guide holes so that the air guide grooves connect the spaces at both ends of the battery assembly.

[0014] In one embodiment, the intermediate module includes a continuous middle body and a plurality of positioning grooves recessed from the middle body, the energy storage battery is embedded in the positioning grooves, and the air guide channel passes through the middle body and is distributed between two adjacent positioning grooves.

[0015] In one embodiment, the battery assembly includes mounting frames installed at both ends of the battery assembly, and both ends of the energy storage battery are respectively plugged into and limited to the mounting frames. The length of the intermediate module is less than the distance between the two mounting frames, and a lateral flow space is formed between the end of the intermediate module and the mounting frame.

[0016] In one embodiment, the control board assembly is pressed onto the mounting frame, the mounting frame is provided with a positioning column, the positioning column and the control board assembly are plugged together, and the battery assembly includes a conductive sheet plugged into the control board assembly.

[0017] In one embodiment, the control board assembly includes a circuit board and an overcurrent protection component formed by bending a metal sheet, the overcurrent protection component includes a connecting portion and a fuse portion located in the middle of the connecting portion, and the cross-sectional area of ​​the connecting portion is larger than the cross-sectional area of ​​the fuse portion.

[0018] According to a second aspect of an embodiment of the utility model, there is provided an electric tool, comprising a tool device and the constant temperature energy storage battery device as described above, wherein the constant temperature energy storage battery device is used to power the tool device.

[0019] The technical solution provided by the embodiment of the utility model may include the following beneficial effects: the temperature-controlled phase change component can absorb the heat generated by the battery component, thereby maintaining the temperature of the battery component stable. The temperature-controlled phase change component is provided with a plurality of air guide channels, and gas flows in each air guide channel to achieve heat exchange between the battery component and the temperature-controlled phase change component and the air, thereby achieving heat interaction in multiple ways, which can not only achieve stable temperature control, but also achieve rapid temperature reduction, so as to achieve the dual temperature control effect of the temperature-controlled phase change component through airflow and heat absorption. The air guide channel is perpendicular to the length direction of the energy storage battery, and the air guide channel constitutes a long hole and wide groove structure to increase the gas flow space.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0022] Figure 1 The figure is a schematic structural diagram showing a constant temperature energy storage battery device according to an exemplary embodiment.

[0023] Figure 2 The figure is a schematic cross-sectional view of a constant temperature energy storage battery device according to an exemplary embodiment.

[0024] Figure 3 The figure is a schematic diagram showing the explosion structure of a constant temperature energy storage battery device according to an exemplary embodiment.

[0025] Figure 4 The diagram is a schematic structural diagram showing a constant temperature energy storage battery device with a top case removed according to an exemplary embodiment.

[0026] Figure 5 It is a schematic diagram showing the structure of a battery assembly and a temperature-controlled phase change assembly according to an exemplary embodiment.

[0027] Figure 6 It is a schematic diagram showing the structure of a portion of energy storage batteries attached to a temperature-controlled phase change component according to an exemplary embodiment.

[0028] In the figure, the casing 10; the top casing 11; the air outlet channel 111; the bottom casing 12; the air inlet channel 121; the air guide frame 13; the air guide pipe 131; the mounting frame 14; the positioning column 141; the battery assembly 20; the energy storage module 21; the energy storage battery 211; the control board assembly 30; the circuit board 31; the air guide jack 311; the overcurrent protection component 32; the connecting part 321; the fuse part 322; the temperature control phase change assembly 40; the bottom module 41; the guide hole 411; the positioning groove 412; the air guide groove 413; the bottom phase change body 414; the middle module 42; the air guide channel 421; the positioning groove 422; the middle body 423. DETAILED DESCRIPTION

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 3As shown, the utility model provides a constant temperature energy storage battery device, which includes a housing 10, a control board assembly 30, a battery assembly 20 and a temperature control phase change assembly 40, and the control board assembly 30 is installed in the housing 10. The battery assembly 20 includes at least two layers of energy storage modules 21, and each layer of energy storage modules 21 is provided with at least four energy storage batteries 211. The battery assembly 20 and the control board assembly 30 are electrically connected, and the control board assembly 30 outputs electric energy and controls the power supply of the internal battery assembly 20.

[0033] The housing 10 is a shell structure, including a bottom housing 12 and a top housing 11 that fit together. The housing 10 is provided with an air outlet channel 111 and at least one air inlet channel 121 that are relatively arranged, wherein the air inlet channel 121 is distributed in the bottom housing 12 and the air outlet channel 111 is arranged in the top housing 11.

[0034] The temperature-controlled phase change component 40 includes a bottom module 41 made of phase change material and at least one middle module 42, and the bottom module 41 is installed on the casing 10. Among them, the bottom module 41 is installed on the bottom shell 12, a layer of energy storage module 21 is laid on the bottom module 41, the middle module 42 is stacked and mounted on the energy storage module 21, and another layer of energy storage module 21 is stacked on the middle module 42. When the energy storage module 21 is set to three or more layers, the middle module 42 and the energy storage module 21 are stacked in sequence to form a multi-layer structure. The temperature-controlled phase change component 40 can absorb the heat generated by the battery assembly 20, so as to keep the temperature of the battery assembly 20 stable.

[0035] The middle module 42 separates the energy storage modules 21 of two adjacent layers. The bottom module 41 and at least one middle module 42 are provided with a plurality of air guide channels 421 that penetrate therethrough. The air guide channels 421 are perpendicular to the length direction of the energy storage batteries 211. Each air guide channel 421 separates adjacent energy storage batteries 211. The air outlet channel 111 is connected to one end of the air guide channel 421, and the air outlet channel 111 is connected to the other end of the air guide channel 421.

[0036] The temperature-controlled phase-change assembly 40 is provided with a plurality of air-conducting channels 421, and gas flows in each air-conducting channel 421 to achieve heat exchange between the battery assembly 20 and the temperature-controlled phase-change assembly 40 and the air, thereby achieving heat interaction in multiple ways, which can achieve both stable temperature control and rapid temperature drop. The air-conducting channel 421 is perpendicular to the length direction of the energy storage battery 211, and the air-conducting channel 421 forms a long hole and wide groove structure to increase the gas flow space.

[0037] In one embodiment, the width of two adjacent air guide channels 421 is greater than the minimum spacing between two adjacent energy storage batteries 211 in the same layer, and at least part of the surface of the energy storage battery 211 intersects with the air guide channel 421. The energy storage batteries 211 are arranged in parallel and spaced apart. For example, one layer of energy storage batteries 211 is provided with N, such as N is set to 4, 5, 6, 8, 10, 20. Then the number of air guide channels 421 is N-1. The energy storage battery 211 is arranged in a cylindrical or rectangular shape, and the minimum spacing between two adjacent energy storage batteries 211 is the distance between the opposite surfaces of the two energy storage batteries 211. The spacing between two adjacent air guide channels 421 is greater than the minimum spacing, so that part of the surface of the energy storage battery 211 extends into the air guide channel 421, thereby directly contacting with the air guide channel 421 to achieve heat transfer. In addition, the surface of the air guide channel 421 provided by the bottom module 41 and the middle module 42 is a gas flow area, and is also a heat dissipation area, which can increase the heat exchange area and is conducive to temperature control. The distribution of the air guide channels 421 and the energy storage batteries 211 are alternately distributed, and the heat storage batteries 211 and the temperature control phase change components 40 can be dissipated synchronously, and the comprehensive cooling effect is good.

[0038] Furthermore, the housing 10 is provided with a confluence space, which is connected to the air guide channel 421 and the air outlet channel 111. A plurality of air guide channels 421 converge to the confluence space, so that the airflow can be concentrated and flow out from the air outlet channel 111, and the airflow output is smooth. Preferably, the air outlet channel 111 is located at the top of the space inside the housing 10, and the confluence space is located at the top of the battery assembly 20.

[0039] like Figures 2 to 5 As shown, the bottom module 41 and the middle module 42 are made of phase change material, and the temperature control and heat absorption effect are stable, so as to keep the working temperature of the constant temperature energy storage battery 211 device stable. In one embodiment, the bottom module 41 includes a bottom phase change body 414, two guide holes 411 that pass through the bottom phase change body 414 at intervals, and the cross-sectional size of the guide hole 411 is greater than the width of the two adjacent air guide channels 421, and the guide hole 411 is arranged corresponding to the air intake channel 121. The guide hole 411 is a large-aperture hole structure that passes through the bottom module 41 to match the corresponding air intake channel 121. Optionally, the aperture of the guide hole 411 is less than or equal to the opening size of the air intake channel 121 to guide the airflow in correspondingly. Preferably, the air intake channel 121 is provided with a plurality of grille ribs that are staggered up and down, and lateral air holes are formed between the two grille ribs that are staggered up and down to intake air from the side. The projections of the staggered grid ribs on the bottom plane overlap to form a closed structure, thereby preventing foreign matter from directly entering the guide hole 411 area while maintaining the air flow conduction effect.

[0040] In one embodiment, the battery assembly 20 includes a mounting frame 14 installed at both ends of the battery assembly 20, and both ends of the energy storage battery 211 are respectively inserted and limited to the mounting frame 14. The length of the intermediate module 42 is less than the spacing between the two mounting frames 14, and a lateral flow space is formed between the end of the intermediate module 42 and the mounting frame 14. The two mounting frames 14 respectively limit the two ends of the battery assembly 20, so as to keep the installation position and installation angle of the energy storage battery 211 consistent. And the battery assembly 20 is pressed and fitted with the temperature control phase change component 40 under the limitation of the mounting frame 14, which can not only maintain a close fit and heat conduction, but also have good buffering performance, and maintain the high stability of the battery assembly 20. The length of the intermediate module 42 is less than the spacing between the mounting frames 14, and a lateral flow guide space for gas circulation is formed between the intermediate module 42 and the mounting frame 14 to achieve ventilation and cooling regulation.

[0041] Preferably, the lateral flow guide space is connected to the collection space to form a three-dimensional airflow circulation structure. Further, the bottom module 41 also includes two air guide grooves 413 spaced apart and distributed on the bottom phase change body 414. The air guide grooves 413 penetrate the opposite sides of the bottom phase change body 414 and are arranged parallel to the length direction of the energy storage battery 211. The air guide grooves 413 intersect with the guide holes 411 so that the air guide grooves 413 are connected to the spaces at both ends of the battery assembly 20. The air guide grooves 413 can be connected to the lateral flow guide space, thereby realizing a complete three-dimensional airflow circulation structure.

[0042] The bottom module 41 also includes positioning grooves 412 that are spaced apart on the bottom phase change body 414 and are arc-shaped structures that can accommodate the energy storage battery 211. When the bottom module 41 and the middle module 42 are closed to clamp the energy storage battery 211, at least part of the bottom module 41 and the middle module 42 are in contact to form heat transfer between the bottom module 41 and the middle module 42, thereby achieving overall internal temperature balance.

[0043] Preferably, the width of one guide hole 411 is greater than or equal to the width of two energy storage batteries 211, so as to form a regional airflow channel and a large air intake and form a narrow airflow channel at the air guide channel 421, thereby forming a local flow velocity increase effect and improving the heat dissipation effect. Optionally, the guide hole 411 is set as a rectangular hole, an elliptical hole or a circular hole. The bottom module 41 is an integral module structure, with partial hollowing, easy assembly and good airflow guiding function.

[0044] The middle module 42 separates the energy storage battery 211 between the upper and lower layers and absorbs heat, wherein the middle module 42 includes a continuous middle body 423 and a plurality of positioning grooves 422 recessed from the middle body 423, the energy storage battery 211 is embedded in the positioning groove 422, and the air guide channel 421 runs through the middle body 423 and is distributed between two adjacent positioning grooves 422. The positioning groove 422 and the positioning groove 412 are arranged relative to each other to respectively contain and fit the surface of the energy storage battery 211. Preferably, the surface of the energy storage battery 211 is made of metal material to improve the heat conduction effect. Further preferably, a heat conducting medium is provided at the joint surface between the energy storage battery 211 and the positioning groove 422 to improve the heat conduction efficiency. For example, the heat conducting medium can be provided as a heat conducting glue, a graphene heat conducting film, or the like.

[0045] The air guide channel 421 passes through the middle module 42 and is located at the intersection of two adjacent positioning grooves 412 to form an air flow guide. The air guide channel 421 can be set as a flat long hole structure or a porous structure to increase the heat conduction area and ventilation performance. In one embodiment, the positioning groove 412 has a height difference in the thickness direction of the middle body 423, so that the energy storage batteries 211 in the same layer of energy storage modules 21 have a height difference to achieve angular distribution. Preferably, the three continuously distributed energy storage batteries 211 are symmetrically distributed with the middle energy storage battery 211. The positioning groove 412 has an undulating change, and accordingly, the air guide channel 421 intersects the space on both sides of the positioning groove 412 to form a trumpet-shaped guide space to form an accelerated guide structure. Preferably, the large end of the air guide channel 421 faces the guide hole 411 to form a pressurized drive space structure.

[0046] In one embodiment, the control board assembly 30 is pressed on the mounting frame 14, the mounting frame 14 is provided with a positioning column 141, the positioning column 141 and the control board assembly 30 are plugged together, and the battery assembly 20 includes a conductive sheet plugged into the control board assembly 30. Both sides of the mounting frame 14 are provided with protruding positioning columns 141, and the control board assembly 30 includes a circuit board 31, and the circuit board 31 is provided with a positioning hole. The positioning column 141 is plugged into the positioning hole to achieve a positioning plug connection.

[0047] Preferably, an air guide frame 13 is provided between the battery assembly 20 and the circuit board 31, the air guide frame 13 is pressed on the battery assembly 20, and a confluence space is formed between the air guide frame 13 and the battery assembly 20. The air guide frame 13 is provided with an air guide tube 131 penetrating the circuit board 31 and a plurality of air guide plates distributed in the air guide tube 131, and the ends of the air guide plates extend into the confluence space and are curved to guide the airflow on the opposite side into the air guide tube 131. The air guide frame 13 limits the battery assembly 20 to maintain structural stability.

[0048] like Figures 3 to 6As shown, in one embodiment, the control board assembly 30 includes a circuit board 31 and an overcurrent protection member 32 formed by bending a metal sheet. The overcurrent protection member 32 includes a connecting portion 321 and a fuse portion 322 located in the middle of the connecting portion 321. The cross-sectional area of ​​the connecting portion 321 is larger than the cross-sectional area of ​​the fuse portion 322. The circuit board 31 is provided with a conductive plug, and the metal sheet of the battery assembly 20 is plugged and connected to the conductive plug for plug-in connection. The circuit board 31 is also provided with an air guide plug 311, and the air guide tube 131 is inserted into the air guide plug 311 to perform an air guide connection. The air guide frame 13 is located between the circuit board 31 and the battery assembly 20 to separate the battery assembly 20 and the control board assembly 30, realize directional control of the temperature zone, and reduce the thermal energy impact between the control board assembly 30 and the battery assembly 20.

[0049] The overcurrent protection part 32 is processed by bending a metal sheet. The overcurrent protection part 32 is an integral structure and does not require an additional assembly structure, which greatly simplifies the installation effect. Preferably, the connecting part 321 is located at both ends of the fuse part 322, and is used to connect the circuit board 31 to form a fuse protection structure. The overcurrent protection part 32 is formed by stamping a metal sheet to form a structure with a reduced local thickness, such as the fuse part 322 is set as an inclined straight bar structure, a corrugated structure, or a hole is opened on the basis of the straight bar to form a local cross-section reduction. The fuse part 322 and the two ends of the fuse part 322 form a structure similar to an "N" or "I" shape, wherein the fuse part 322 is inclined to reduce the length direction, increase the fuse length, and have a good fuse effect. The overcurrent protection part 32 is processed by a metal sheet, has high overall bendability, and is easy to install.

[0050] Furthermore, the overcurrent protection member 32 is disposed on one side of the outlet of the air duct 131 , and the airflow flows into the periphery of the overcurrent protection member 32 , which can keep the peripheral electrical environment of the overcurrent protection member 32 stable.

[0051] The structures of the bottom module 41 and the middle module 42 are basically the same, and they are made of phase change material to form a heat-absorbing phase change temperature stabilization control.

[0052] The constant temperature energy storage battery device disclosed in the above embodiment is applied to an electric tool, wherein the electric tool includes a tool device and a constant temperature energy storage battery device, and the constant temperature energy storage battery device is used to power the tool device. The constant temperature energy storage battery device and the tool device are detachably connected to form an assembly structure. The constant temperature energy storage battery device provides electric energy for the tool device, such as the tool device is set as a pistol drill, an electric screwdriver, a high-pressure washing device, and other electrical equipment.

[0053] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0054] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A constant temperature energy storage battery device, characterized in that: The constant temperature energy storage battery device includes: A housing, provided with an air outlet passage and at least one air inlet passage arranged opposite to each other; A control panel assembly is installed in the housing; The battery assembly comprises at least two layers of energy storage modules, each layer of energy storage modules being provided with at least four energy storage batteries at intervals; The temperature-controlled phase change component comprises a bottom module and at least one middle module made of phase change material, wherein the bottom module is mounted on the casing, a layer of the energy storage module is laid on the bottom module, and the middle module separates two adjacent layers of the energy storage modules, and the bottom module and at least one middle module are provided with a plurality of through-going air guide channels, wherein the air guide channels are perpendicular to the length direction of the energy storage batteries, each of the air guide channels separates adjacent energy storage batteries, and the air outlet channel is connected to one end of the air guide channel, and the air outlet channel is connected to the other end of the air guide channel.

2. The constant temperature energy storage battery device according to claim 1, characterized in that: The width of two adjacent air guide channels is greater than the minimum spacing between two adjacent energy storage batteries in the same layer, and at least part of the surface of the energy storage battery intersects with the air guide channel. The housing is provided with a confluence space, and the confluence space aggregates and connects the air guide channel and the air outlet channel.

3. The constant temperature energy storage battery device according to claim 1, characterized in that: The bottom module includes a bottom phase change body and two guide holes that penetrate the bottom phase change body at intervals. The cross-sectional size of the guide holes is larger than the width of two adjacent air guide channels. The guide holes are arranged corresponding to the air intake channels.

4. The constant temperature energy storage battery device according to claim 3, characterized in that: The bottom module also includes two air guide grooves spaced apart from each other on the bottom phase change body, the air guide grooves passing through opposite sides of the bottom phase change body and arranged parallel to the length direction of the energy storage battery, the air guide grooves intersecting with the guide holes so that the air guide grooves connect the spaces at both ends of the battery assembly.

5. The constant temperature energy storage battery device according to claim 3, characterized in that: The intermediate module includes a continuous middle body and a plurality of positioning grooves recessed from the middle body, the energy storage battery is embedded in the positioning grooves, and the air guide channel penetrates the middle body and is distributed between two adjacent positioning grooves.

6. The constant temperature energy storage battery device according to claim 1, characterized in that: The battery assembly includes mounting frames installed at both ends of the battery assembly, and the two ends of the energy storage battery are respectively plugged into and limited to the mounting frames. The length of the intermediate module is less than the distance between the two mounting frames, and a lateral flow space is formed between the end of the intermediate module and the mounting frame.

7. The constant temperature energy storage battery device according to claim 6, characterized in that: The control board assembly is pressed onto the mounting frame, the mounting frame is provided with a positioning column, the positioning column and the control board assembly are plugged into each other, and the battery assembly includes a conductive sheet plugged into the control board assembly.

8. The constant temperature energy storage battery device according to claim 1, characterized in that: The control board assembly includes a circuit board and an overcurrent protection component formed by bending a metal sheet. The overcurrent protection component includes a connecting portion and a fuse portion located in the middle of the connecting portion. The cross-sectional area of ​​the connecting portion is greater than the cross-sectional area of ​​the fuse portion.

9. An electric tool, characterized in that: It comprises a tool device and a constant temperature energy storage battery device as claimed in any one of claims 1 to 8, wherein the constant temperature energy storage battery device is used to power the tool device.

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