Battery protection plate of industrial blower

Abstract

The utility model discloses an industrial blower battery protection plate which comprises a fixing part, a protection part is arranged on one side of the fixing part, the protection part is of an arc-shaped structure, the protection part is detachably buckled on one side of the fixing part, and a cavity for fixing a lithium battery pack in a battery module is formed. The fixing part is provided with a through hole through which an electrode slice led out from an electrode of the lithium battery pack penetrates, the other side of the fixing part is provided with a blind hole which can be in threaded connection with a bolt, and the electrode slice is detachably connected with a conducting strip led out from a power interface of a circuit board in the battery module through the bolt; the physical interlayer is additionally arranged between the lithium battery pack and the circuit board, so that the probability that the circuit board is damaged due to the problems of liquid leakage, swelling and the like of the lithium battery pack is reduced, and the replacement cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery protection plate for an industrial hair dryer. Background Art

[0002] With the popularity of lithium batteries, various portable products have begun to use lithium batteries for power supply. Industrial hair dryers are common industrial products, but most of them are powered by AC. In certain industrial application scenarios, it is not convenient to use AC power on site, so lithium batteries are considered for power supply. Due to the complexity and harshness of industrial application scenarios, lithium batteries are required to be stable in use and have perfect safety protection to ensure that there are no problems with the battery, avoid product safety risks, and ensure the safety of users.

[0003] In order to meet the requirement of DC18V-24V for the motor of industrial hair dryer, 6 series of lithium batteries are selected for power supply. Due to the space and volume limitation of the product, the cells are arranged in a triangle shape, and the circuit board is close to the surface of the cell. The two are wound and installed with tape. Under the premise of ensuring reliability, the volume requirements are met. The overall layout is as follows Figure 5 shown.

[0004] However, this connection method leaves no interlayer between the lithium battery and the circuit board. When the lithium battery has problems such as leakage or bulging, it will affect the circuit board, resulting in a relatively high cost of use. At the same time, the circuit board is close to the surface of the battery cell. When connecting the electrode sheet leading out of the battery cell to the power interface of the circuit board, the electrode sheet must be bent first and set to the power interface of the circuit board. Since the electrode sheet has a certain rebound characteristic, when connecting by soldering, it is also necessary to maintain a certain pressure on the electrode sheet so that the solder can be solidified to complete the welding. This makes the operation cumbersome and the assembly efficiency low. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing circuit board is directly fixed closely to the lithium battery pack, lacks protection and fixation, resulting in high use cost and low assembly efficiency.

[0006] In order to solve the above technical problems, the utility model provides a technical solution: an industrial hair dryer battery protection board, comprising a fixing part, a protection part is arranged on one side of the circuit board, the protection part is an arc-shaped structure, the protection part can be detachably buckled on one side of the fixing part through a snap-on structure, and forms a chamber for fixing the lithium battery pack in the battery module, the fixing part is provided with a through hole for the electrode sheet led out from the electrode of the lithium battery pack to pass through, and the other side of the fixing part is provided with a blind hole which can be threadedly connected with a bolt, the blind hole corresponds to the through hole, and the electrode sheet and the conductive sheet led out from the power interface of the circuit board in the battery module are detachably connected through the bolt.

[0007] Furthermore, the buckle structure includes an elastic buckle and a buckle slot, the elastic buckle is arranged at the bottom of both sides of the protecting part, and the buckle slot is arranged on both sides of the fixing part.

[0008] Furthermore, the electrode sheet and the conductive sheet are provided with connection holes for the bolts to penetrate.

[0009] The fixing portion is provided with an arc-shaped groove for the lithium battery pack to be embedded.

[0010] Furthermore, a groove for embedding the circuit board is provided on the other side of the fixing portion, and a limiting protrusion is provided at the edge of one side of the groove, and the limiting protrusion is suspended and extends toward the groove.

[0011] Furthermore, the fixing portion and the protecting portion are made of flame-retardant materials.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model fixes and protects the lithium battery pack through the cooperation between the fixing part and the protection part, and connects the electrode sheet and the conductive sheet through the cooperation of the bolt and the blind hole. The bolt crimping connection is convenient and the circuit board and the fixing part are fixed. The circuit board can be embedded in the groove on the fixing part, and the position without bolts is limited by the limiting protrusion to ensure the stability of the circuit board connection and protect the circuit board at the same time. The fixing part and the protection part are made of PP flame-retardant material, and a physical partition is added between the lithium battery pack and the circuit board to reduce the probability of damage to the circuit board caused by leakage, bulging and other problems of the lithium battery pack, thereby reducing the replacement cost. The protective circuit board of the utility model has a very small size change compared with the original battery module, which meets the installation and use requirements.

[0014] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only five of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the battery protection board of the industrial hair dryer of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the fixing part of the battery protection board of the industrial hair dryer of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the protection part of the battery protection board of the industrial hair dryer of the utility model.

[0019] Figure 4 The utility model is a schematic structural diagram of the industrial hair dryer battery protection board when in use.

[0020] Figure 5 The figure is a schematic diagram of the structure of a battery module of an industrial hair dryer power supply in the prior art.

[0021] In the figure, 1-fixing part, 2-protecting part, 3-through hole, 4-bolt, 5-elastic buckle, 6-slot, 7-arc slot, 8-groove, 9-limiting protrusion, 10-blind hole;

[0022] A-lithium battery pack, B-circuit board, C-electrode sheet, D-conductive sheet. DETAILED DESCRIPTION

[0023] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0024] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0025] The names of the messages or information exchanged between multiple devices in the implementation manner of the present utility model are only used for illustrative purposes, and are not used to limit the scope of these messages or information. Embodiment 1

[0026] like Figure 1-4The industrial hair dryer battery protection board shown includes a fixing part 1, a protection part 2 is arranged on one side of the fixing part 1, the fixing part 1 and the protection part 2 can be made of PP flame-retardant material, the protection part 2 is an arc-shaped structure, the protection part 2 can be detachably buckled on one side of the fixing part 1 through a snap-fit ​​structure, and forms a chamber for fixing the lithium battery pack A in the battery module, the fixing part 1 is provided with a through hole 3 for the electrode sheet C led out from the electrode of the lithium battery pack A to pass through, and the other side of the fixing part 1 is provided with a blind hole 10 that can be threadedly connected with a bolt 4, and the blind hole 10 is aligned with the through hole 3. The electrode sheet C and the conductive sheet D led out from the power interface of the circuit board B in the battery module are detachably connected by bolts 4; the lithium battery pack A is fixed to one side of the fixing part 1 by the protective part 2, and the circuit board B is fixed to the other side of the fixing part 1 by bolts 4, so as to increase the physical distance between the lithium battery pack A and the circuit board B and reduce the influence of the lithium battery pack A on the circuit board B. At the same time, the electrode sheet C and the conductive sheet D are crimped and connected by bolts 4 (the conductive sheet D needs to be connected to the power contact on the circuit board B in advance), and the connection is convenient and quick.

[0027] Among them, the buckle structure includes an elastic buckle 5 and a card slot 6, the elastic buckle 5 is arranged at the bottom of both sides of the protective part 2, and the card slot 6 is arranged on both sides of the fixing part 1; the electrode sheet C and the conductive sheet D are provided with connecting holes for the bolts 4 to pass through; the fixing part 1 is provided with an arc groove 7 for the lithium battery pack A to be embedded; the elastic buckle 5 and the card slot 6 are detachably connected, which is convenient for disassembly, assembly and replacement of the lithium battery pack A, and the setting of the connecting holes on the electrode sheet C and the conductive sheet D (processed together during production) is convenient for the bolts 4 to pass through and connect the two, and the connecting holes can be strip holes to ensure that the connection can still be made with a certain corresponding error; the setting of the arc groove 7 limits the lithium battery to prevent it from shaking, thereby ensuring the stability of the fixation of the lithium battery pack A. Embodiment 2

[0028] like Figure 1 and Figure 5 As shown, this embodiment is obtained by adding technical features such as a groove 8 on the basis of the first embodiment. The remaining technical features are the same as those of the first embodiment, and the similarities are not repeated here. The difference between this embodiment and the first embodiment is that a groove 8 for embedding the circuit board B is provided on the other side of the fixing portion 1, and a limiting protrusion 9 is provided at the edge of the groove 8 on one side, and the limiting protrusion 9 is suspended and extends in the direction of the groove 8.

[0029] In this embodiment, the limiting protrusion 9 is arranged on the side without the through hole 3. When one end of the circuit board B extends between the limiting protrusion 9 and the groove 8, the limiting of the end of the circuit board B is completed. The other end of the circuit board B is fixed in the groove 8 by the bolt 4 to ensure the connection stability of the circuit board B. The groove 8 has a certain protective effect on the circuit board B, reduces the probability of bumps and friction, and extends the service life of the circuit board B.

[0030] When in use, the lithium battery pack A is placed in the arc groove 7 on the fixing part 1, the electrode sheet C extends into the through hole 3, and the lithium battery pack A is fixed to one side of the fixing part 1 through the protective part 2 (the elastic buckle 5 extends into the card slot 6), and the circuit board B is placed in the groove 8. After bending the electrode sheet C, the electrode sheet C and the conductive sheet D are connected and fixed to the fixing part 1 through the bolt 4 (the conductive sheet D needs to be connected to the power contact on the circuit board B in advance). While completing the circuit connection, the circuit board B is also fixed in the groove 8. At this time, flame retardant glue can be added to the through hole 3 to seal the through hole 3 to complete the fixed installation of the battery module.

[0031] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An industrial hair dryer battery protection board, comprising a fixing portion, a protection portion is arranged on one side of the fixing portion, and is characterized in that: The protection part is an arc-shaped structure, which can be detachably buckled on one side of the fixing part through a snap-on structure, and forms a cavity for fixing the lithium battery pack in the battery module. The fixing part is provided with a through hole for the electrode sheet led out from the electrode of the lithium battery pack to pass through, and the other side of the fixing part is provided with a blind hole that can be threadedly connected with a bolt. The blind hole corresponds to the through hole, and the electrode sheet and the conductive sheet led out from the power interface of the circuit board are detachably connected through the bolt.

2. The industrial hair dryer battery protection board according to claim 1 is characterized by: The buckle structure comprises an elastic buckle and a buckle slot. The elastic buckle is arranged at the bottom of both sides of the protection part, and the buckle slot is arranged at both sides of the fixing part.

3. The industrial hair dryer battery protection board according to claim 2 is characterized by: The electrode sheet and the conductive sheet are provided with connection holes for the bolts to pass through.

4. The industrial hair dryer battery protection board according to claim 3 is characterized by: The fixing portion is provided with an arc-shaped groove for the lithium battery pack to be embedded.

5. The industrial hair dryer battery protection board according to claim 4 is characterized by: A groove for embedding the circuit board is arranged on the other side of the fixing portion, and a limiting protrusion is arranged at the edge of one side of the groove, and the limiting protrusion is suspended and extends toward the groove.

6. The industrial hair dryer battery protection board according to claim 5 is characterized by: The fixing part and the protecting part are made of flame retardant material.

Images