A battery pack

Abstract

The utility model discloses a battery pack, including box and display component, the box is formed with containing cavity and observation port, and the observation port and containing cavity intercommunication, and the display component includes light -transmitting cover and display piece, and the display piece sets up in containing cavity, and the light -transmitting cover covers and sets up in display piece, and the light -transmitting cover is connected with the box and is covered and sets up in the observation port, and the display piece is used to show the state of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery pack. Background Technology

[0002] Existing energy storage battery packs are mostly used in outdoor power supply, mobile maintenance, and emergency backup scenarios, where users have a strong demand for battery status information such as charge level, power output, remaining usable time, and health status. Common solutions rely on host computers or external monitoring systems for data collection and display, requiring users to use computers or dedicated terminals to obtain battery status information. This architecture results in long information chains, unintuitive interaction, and users being unable to directly read key statuses on-site, making operations complex and time-consuming. In environments with unstable networks or limited interfaces, issues such as data unavailability and status lag are more likely to occur, affecting power consumption decisions and maintenance efficiency. Utility Model Content

[0003] One objective of this invention is to provide a battery pack that addresses the technical problem of how users can intuitively and conveniently obtain battery status information.

[0004] To achieve the above objectives, the present invention provides a solution as follows: a battery pack, comprising: a housing, the housing having a receiving cavity and an observation port, the observation port and the receiving cavity being connected; The display assembly includes a light-transmitting cover and a display element. The display element is disposed in a receiving cavity, and the light-transmitting cover covers the display element. The light-transmitting cover is connected to the housing and covers the observation port. The display element is used to display the status of the battery pack.

[0005] Optionally, the light-transmitting cover includes a first base and a light-transmitting first protrusion connected to the first base. The first protrusion matches and is inserted into the observation port, and the first base is connected to the housing.

[0006] Optionally, a mounting cavity is formed inside the first substrate, the first protrusion extends toward the side away from the mounting cavity and protrudes out of the first substrate, the display element is connected to the first substrate and the light-emitting surface of the display element is disposed facing the first protrusion.

[0007] Optionally, the display includes multiple light sources, which are disposed on the light-emitting surface of the display and spaced apart along the length of the first protrusion. The projection of the multiple light sources onto the plane where the observation port is located is inside the observation port.

[0008] Optionally, the battery pack includes a seal connected between the housing and the light-transmitting cover to seal the gap between the observation port and the light-transmitting cover.

[0009] Optionally, the light-transmitting cover includes a first base and a light-transmitting first protrusion connected to the first base, and a sealing member is disposed between the first base and the housing and surrounds the first protrusion.

[0010] Optionally, the display element has a first through hole, and the light-transmitting cover has a second through hole; The battery pack includes connectors and fasteners. A connector is provided on the side of the housing facing the receiving cavity. The connector faces the light-transmitting cover and is inserted into the second through hole. The fastener passes through the first through hole and is connected to the connector to connect the display, the light-transmitting cover and the housing.

[0011] Optionally, the second through hole is flared, and the inner diameter of the second through hole gradually increases in the direction away from the display element, and the inner wall of the second through hole abuts against the connector.

[0012] Optionally, a clearance channel is formed between the light-transmitting cover and the display element, the clearance channel being used for the transmission of wires from the display element.

[0013] Optionally, the enclosure includes a main body, a first cover and a second cover, a receiving cavity is formed in the main body, an observation port is formed in the first cover, the first cover is placed on the main body to close the receiving cavity, the second cover is detachably connected to the first cover and is arranged opposite to the observation port, and a light-transmitting cover is connected to the first cover.

[0014] The beneficial effects of this utility model are as follows: The battery pack includes a housing and a display component. The housing has a receiving cavity and an observation port, which are connected. The display component includes a light-transmitting cover and a display element. The display element is disposed in the receiving cavity, and the light-transmitting cover is placed over the display element. The light-transmitting cover is connected to the housing and covers the observation port. The display element is used to display the status of the battery pack. In practical applications, when the battery pack is working, the user looks at the display element through the observation port on the housing that is connected to the receiving cavity. Because the display element is arranged inside the receiving cavity, it can be electrically connected to the battery management system (BMS) in the battery pack, thereby directly acquiring and displaying real-time data from the BMS. At the same time, the observation port is sealed from the inside by the light-transmitting cover that is fixedly connected to the housing. Light can pass through or into the observation port, while external rainwater and dust are blocked outside the light-transmitting cover, so that the display content can still be clearly read, avoiding the risk of water and dust ingress caused by frequently opening the cover to read information. In transportation and vibration scenarios, the rigid connection between the light-transmitting cover and the housing forms a reinforced boundary for the observation port, offsetting the direct force of local impacts on the display components and reducing the probability of displacement or damage to the display components. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the battery pack provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the structure of the display component provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the display component provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the battery pack provided in an embodiment of the present invention; Figure 5 This is provided by the embodiment of the present utility model. Figure 4 A magnified view of a portion of region A in the middle; Figure 6 This is a schematic diagram of the structure of the receiving cavity provided in an embodiment of the present invention.

[0017] Explanation of icon numbers: 20. Housing; 21. Receiving cavity; 22. Observation port; 23. Main body; 24. First cover; 25. Second cover; 30. Display component; 31. Light-transmitting cover; 311. First base; 3111. Mounting cavity; 312. First protrusion; 313. Second through hole; 32. Display element; 321. Light-emitting surface; 322. Light source; 323. First through hole; 33. Clearance channel; 40. Sealing element; 50. Connecting element; 60. Fastener. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the battery pack provided in this embodiment of the utility model. Figure 2 This is a schematic diagram of the structure of the display component 30 provided in this embodiment of the utility model.

[0020] This utility model provides a battery pack, including a housing 20 and a display component 30. The housing 20 has a receiving cavity 21 and an observation port 22, which are connected to the receiving cavity 21. The display component 30 includes a light-transmitting cover 31 and a display element 32. The display element 32 is disposed in the receiving cavity 21, and the light-transmitting cover 31 covers the display element 32. The light-transmitting cover 31 is connected to the housing 20 and covers the observation port 22. The display element 32 is used to display the status of the battery pack.

[0021] In practical applications, when the battery pack is operating, the user directs their gaze towards the display 32 through the observation port 22 on the housing 20, which communicates with the housing cavity 21. Because the display 32 is located within the housing cavity 21, it can be electrically connected to the battery management system (BMS) in the battery pack, thereby directly acquiring and displaying real-time data from the BMS. Simultaneously, the observation port 22 is sealed internally by a light-transmitting cover 31 fixedly connected to the housing 20. Light can pass through or into the observation port 22, while external rainwater and dust are blocked outside the light-transmitting cover 31, ensuring the displayed content remains clearly readable and avoiding the risk of water and dust ingress caused by frequent opening of the cover for information reading. In transportation and vibration scenarios, the rigid connection between the light-transmitting cover 31 and the housing 20 forms a reinforced boundary for the observation port 22, offsetting the direct force of localized impacts on the display 32 and reducing the probability of displacement or damage to the display 32.

[0022] The display element 32 can be a display screen that directly displays battery status information such as battery level, battery temperature, and fault type. Alternatively, the display element 32 can be a light source 322 that can indicate battery level or other statuses. For example, the brightness of the light source 322 can be used to display the battery level, the flashing frequency of the light source 322 can be used to display the fault status, and the color of the light source 322 can be used to display the battery temperature. Or, the display element 32 can include multiple light sources 322, and the number of light sources 322 and the flashing frequency can be used to display battery status information such as fault status, battery level, and battery temperature.

[0023] The material of the light-transmitting cover 31 can be transparent glass, acrylic, transparent resin, etc.

[0024] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The light-transmitting cover 31 includes a first base 311 and a light-transmitting first protrusion 312 connected to the first base 311. The first protrusion 312 matches and is inserted into the observation port 22. The first base 311 is connected to the housing 20.

[0025] In practical applications, during the assembly process, when the user aligns the light-transmitting cover 31 with the first protrusion 312 with the observation port 22 of the housing 20, the matching of the first protrusion 312 with the observation port 22 provides guidance and positioning, so that the light-transmitting cover 31 is limited by the hole wall during the insertion process, thereby facilitating the installation of the first protrusion 312.

[0026] Optionally, see Figure 3 The first base 311 has a mounting cavity 3111 inside, the first protrusion 312 extends toward the side away from the mounting cavity 3111 and protrudes from the first base 311, the display 32 is connected to the first base 311 and the light-emitting surface 321 of the display 32 is disposed toward the first protrusion 312.

[0027] In practical applications, during assembly, the display element 32 is first placed in the mounting cavity 3111 of the first base 311. The mounting cavity 3111 limits and guides the position and orientation of the display element 32, establishing a stable optical reference for the light-emitting surface 321 of the display element 32 relative to the reference surface of the first base 311. Subsequently, the first protrusion 312 protrudes along the side away from the mounting cavity 3111 and aligns with the observation port 22 of the housing 20. Because the light-emitting surface 321 of the display element 32 faces the first protrusion 312, it forms a short and direct light-emitting channel with the inner side of the first protrusion 312, avoiding multiple reflections of light or obstruction by the edges within the mounting cavity 3111. As the first protrusion 312 is inserted into the observation port 22 and fits against the wall of the observation port 22, a sealed path is established between the first protrusion 312 and the observation port 22, preventing moisture and dust from entering the mounting cavity 3111 and preventing fogging or contamination of the light-emitting surface 321 and related light-transmitting interfaces of the display element 32, which would lead to brightness attenuation. Since the display element 32 is fixed by the first base 311 and does not directly bear the load of the outer shell, external impacts and vibrations are preferentially dispersed through the connection between the first protrusion 312 and the hole wall of the observation port 22, thereby reducing the stress on the display element 32 in the mounting cavity 3111 and reducing the impact of external impacts and vibrations on the solder joints of the display element 32.

[0028] Optionally, see Figure 3 The display element 32 includes multiple light sources 322, which are disposed on the light-emitting surface 321 of the display element 32 and spaced apart along the length direction of the first protrusion 312. The projection of the multiple light sources 322 onto the plane where the observation port 22 is located is inside the observation port 22.

[0029] In practical applications, when the display component 32 includes multiple light sources 322 and the multiple light sources 322 are disposed on the light-emitting surface 321 of the display component 32 and spaced apart along the length direction of the first protrusion 312, since the projection of the multiple light sources 322 on the plane where the observation port 22 is located is inside the observation port 22, the emitted light beam completely falls into the opening range of the observation port 22, thereby avoiding secondary reflection and edge occlusion caused by some light beam falling on the hole wall of the observation port 22 or the inner surface of the housing 20.

[0030] In this embodiment, by controlling the number and rhythm of multiple light sources 322 that are spaced apart along the length of the first protrusion 312 and whose projections fall into the observation port 22, the battery status, such as battery power, battery temperature, and whether the battery is faulty, can be displayed intuitively. For example, five lights (named L1-L5) represent the battery power, with each light representing approximately 20%. During charging, the lights gradually accumulate from L1 to L5 to form a progress bar, and all lights are on when the battery is fully charged. When the battery is low, only the leftmost L1 flashes rapidly to indicate charging. When the battery is at a normal temperature, L1-L5 emit blue light, and when the battery temperature is high, L1-L5 emit red light. Different temperature ranges can also be matched with different light colors according to the temperature gradient, thereby achieving the effect of indicating the battery temperature. General battery faults can be alarmed by the middle L3 flashing at a constant frequency, while serious faults will be indicated by the alternating flashing of L1 and L5 at both ends.

[0031] In one embodiment, see Figure 3 The battery pack includes a seal 40 connected between the housing 20 and the light-transmitting cover 31 to seal the gap between the observation port 22 and the light-transmitting cover 31.

[0032] In practical applications, when the battery pack is used outdoors or in environments with dust, moisture, condensation, or cleaning mist, if the observation port 22 is only directly connected to the housing 20 and the light-transmitting cover 31, the interface gap will become a channel for gas, liquid, and particles to enter. This will further lead to water vapor retention and pollution accumulation in the cavity, causing condensation and dirt obstruction on the surface of the display element 32 or the light guide structure. When the user reads the indicator of the light source 322 through the observation port 22, there will be increased scattering and decreased contrast due to changes in refractive index, and the metal contacts may be corroded. The sealing element 40 is connected between the housing 20 and the light-transmitting cover 31 to seal the observation port 22. Under the action of the assembly pre-tightening force, the sealing element 40 forms a continuous seal, blocking the capillary channels through which external media seep in along the joint, reducing the frequency of gas exchange between the inside and outside of the housing 20, and thus reducing the humidity in the receiving cavity 21. This keeps the inside of the light-transmitting cover 31 clean and dry, making it easier for operators to observe. At the same time, it avoids reliability hazards caused by the deposition of contaminants and moisture in electrical components, thereby reducing the frequency of maintenance and cleaning during long-term use.

[0033] Furthermore, referring to Figure 3The light-transmitting cover 31 includes a first base 311 and a light-transmitting first protrusion 312 connected to the first base 311. The sealing member 40 is disposed between the first base 311 and the housing 20 and surrounds the first protrusion 312.

[0034] In practical applications, during battery packaging and use, if the first base 311 of the light-transmitting cover 31 is only attached to the box 20 without the sealing element 40 being placed between the first base 311 and the box 20 and surrounding the first protrusion 312, a tiny gap will be formed between the first protrusion 312 and the periphery of the observation port 22. External water mist and dust can enter from the tiny gap near the root of the first protrusion 312 under the drive of pressure and temperature difference, causing condensation and contamination on the inside of the first protrusion 312, thereby changing the consistency of the refractive interface between the light source 322, the first protrusion 312, and the outside world, resulting in light spot scattering, blurred indicator edges, and misjudgment of readings. When the structure of "a light-transmitting cover 31 including a first base 311 and a light-transmitting first protrusion 312 connected to the first base 311, and a sealing member 40 disposed between the first base 311 and the housing 20 and surrounding the first protrusion 312" is adopted, the sealing member 40 forms a closed sealing track around the first protrusion 312 with the first base 311 under assembly pre-pressure, directly sealing the tiny gaps near the root of the first protrusion 312, greatly reducing the moisture and particles entering the inside of the first protrusion 312, thereby keeping the inner surface of the first protrusion 312 clean and dry under repeated hot and cold cycles, rinsing or vibration conditions. The contrast and edge clarity when the user observes the indicator through the first protrusion 312 are not easily attenuated during long-term use, while reducing the risk of stress cracking and electrical component moisture caused by moisture at the root of the protrusion.

[0035] In one embodiment, reference is made to Figure 2 and Figure 3 The display element 32 has a first through hole 323, and the light-transmitting cover 31 has a second through hole 313. The battery pack includes a connector 50 and a fastener 60. The connector 50 is provided on the side of the housing 20 facing the receiving cavity 21. The connector 50 faces the light-transmitting cover 31 and is inserted into the second through hole 313. The fastener 60 passes through the first through hole 323 and is connected to the connector 50 to connect the display element 32, the light-transmitting cover 31 and the housing 20.

[0036] In practical applications, during assembly, the first through hole 323 of the display component 32 and the second through hole 313 of the light-transmitting cover 31 are aligned sequentially. The connector 50, located on the side of the housing 20 facing the receiving cavity 21, is inserted into the second through hole 313 from the inside out to form a reference guide, thereby enabling the light-transmitting cover 31 to achieve radial limitation and initial positioning relative to the housing 20. Subsequently, the fastener 60 passes through the first through hole 323 from the side of the display component 32 and connects with the connector 50. During the tightening process, the fastener 60 passes through the connector 50. The axial clamping of the fastener 60 presses the display 32, the light-transmitting cover 31 and the housing 20 together along the normal direction. The fitting of the second through hole 313 with the connector 50 helps to suppress assembly eccentricity and lateral movement. Thus, under repeated tightening, vibration and thermal cycling conditions, the relative position of the display 32 and the light-transmitting cover 31 is maintained by the insertion positioning of the connector 50 and the axial preload of the fastener 60, and the contact interface between the light-transmitting cover 31 and the housing 20 is subjected to uniform force and the gap is reduced.

[0037] Furthermore, referring to Figure 3 The second through hole 313 is flared, and the inner diameter of the second through hole 313 gradually increases in the direction away from the display element 32. The inner wall of the second through hole 313 abuts against the connector 50.

[0038] During actual assembly, the user moves the light-transmitting cover 31 closer to the housing 20, causing the connector 50 to first insert into the second through hole 313. Since the second through hole 313 is flared and its inner diameter gradually increases in the direction away from the display element 32, the connector 50 first enters the larger inner diameter section of the second through hole 313, gaining tolerance to absorb initial alignment deviations and assembly tolerances. Subsequently, as the light-transmitting cover 31 continues to move closer, the connector 50 gradually transitions into the smaller inner diameter section, where it is radially converged and automatically aligned under the guidance of the flared conical surface. When it reaches the designed position... When in place, the inner wall of the second through hole 313 abuts against the connector 50. The flared profile decomposes the axial assembly force generated by the advancement of the light-transmitting cover 31 into a radial limiting component and a normal contact component on the connector 50. On the one hand, under tightening or vibration conditions, the gradual reduction from large to small suppresses lateral movement and reduces stress concentration at the orifice. On the other hand, the insertion stroke from lenient to precise reduces assembly impact and scratching, forming a uniform contact zone, so that the interface between the connector 50 and the second through hole 313 maintains stable positioning and force distribution during long-term thermal cycling and repeated disassembly and assembly.

[0039] In one embodiment, reference is made to Figure 3 A clearance channel 33 is formed between the light-transmitting cover 31 and the display element 32, and the clearance channel 33 is used for the wires of the display element 32 to pass through.

[0040] In practical applications, during assembly and use, the user first positions the display element 32 on the predetermined mounting surface. Then, the wires of the display element 32 need to be led out and electrically connected to the BMS, and the light-transmitting cover 31 is placed over the outside of the display element 32. If the light-transmitting cover 31 and the display element 32 have a conventional bonding structure, the wires will be squeezed or forced to detour during the covering process. This results in an excessively small bending radius, scratches on the insulation layer, and additional rebound force, causing slight displacement of the display element 32's positioning and interference with the sealing boundary of the light-transmitting cover 31. By forming a clearance channel 33 between the light-transmitting cover 31 and the display element 32, and allowing the wires of the display element 32 to pass through the clearance channel 33, the wires maintain a set bending radius and lateral clearance within the clearance channel 33, preventing interference with the edges of the light-transmitting cover 31 or the display element 32. Therefore, during final fixing, the wires will not exert a biasing force on the display element 32.

[0041] In one embodiment, reference is made to Figure 4 , Figure 5 and Figure 6 The housing 20 includes a main body 23, a first cover 24 and a second cover 25. A receiving cavity 21 is opened in the main body 23, and an observation port 22 is formed in the first cover 24. The first cover 24 covers the main body 23 to close the receiving cavity 21. The second cover 25 is detachably connected to the first cover 24 and is arranged opposite to the observation port 22. A light-transmitting cover 31 is connected to the first cover 24.

[0042] In practical applications, when routine inspections or replacements of the display component 30 are required, users only need to remove the second cover 25, which is positioned opposite to the observation port 22, from the outside to clean, defog, or replace the display component 30. There is no need to remove the first cover 24 from the main body 23, thereby improving maintenance efficiency.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0044] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0045] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery pack, characterized by, include: The housing has a receiving cavity and an observation port, and the observation port and the receiving cavity are in communication. The display assembly includes a light-transmitting cover and a display element. The display element is disposed in the receiving cavity, and the light-transmitting cover covers the display element. The light-transmitting cover is connected to the housing and covers the observation port. The display element is used to display the status of the battery pack.

2. The battery pack of claim 1, wherein, The light-transmitting cover includes a first base and a light-transmitting first protrusion connected to the first base. The first protrusion matches the observation port and is inserted into the observation port. The first base is connected to the housing.

3. The battery pack according to claim 2, characterized in that, The first substrate has a mounting cavity inside, the first protrusion extends away from the mounting cavity and protrudes from the first substrate, the display is connected to the first substrate and the light-emitting surface of the display is disposed facing the first protrusion.

4. The battery pack of claim 2, wherein, The display device includes multiple light sources, which are disposed on the light-emitting surface of the display device and spaced apart along the length direction of the first protrusion. The projection of the multiple light sources on the plane where the observation port is located is inside the observation port.

5. The battery pack according to claim 1, characterized in that, The battery pack includes a sealing element connected between the housing and the light-transmitting cover to seal the gap between the observation port and the light-transmitting cover.

6. The battery pack according to claim 5, characterized in that, The light-transmitting cover includes a first base and a light-transmitting first protrusion connected to the first base. The sealing member is disposed between the first base and the housing and surrounds the first protrusion.

7. The battery pack according to claim 1, characterized in that, The display component has a first through hole, and the light-transmitting cover has a second through hole; The battery pack includes connectors and fasteners. A connector is provided on the side of the housing facing the receiving cavity. The connector faces the light-transmitting cover and is inserted into the second through hole. The fastener passes through the first through hole and is connected to the connector to connect the display, the light-transmitting cover and the housing.

8. The battery pack according to claim 7, characterized in that, The second through hole is flared, and its inner diameter gradually increases in the direction away from the display element. The inner wall of the second through hole abuts against the connector.

9. The battery pack according to claim 1, characterized in that, A clearance channel is formed between the light-transmitting cover and the display element, the clearance channel being used for the passage of the wires of the display element.

10. The battery pack of claim 1, wherein, The enclosure includes a main body, a first cover, and a second cover. The receiving cavity is formed in the main body, and the observation port is formed in the first cover. The first cover is placed on the main body to close the receiving cavity. The second cover is detachably connected to the first cover and is disposed opposite to the observation port. The light-transmitting cover is connected to the first cover.

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