CN210863985U

CN210863985U - Battery voltage sampling device

Info

Publication number: CN210863985U
Application number: CN201921426374.4U
Authority: CN
Inventors: 唐胜利
Original assignee: Dongguan Lilong Battery Technology Co ltd
Current assignee: Dongguan Lilong Battery Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-26
Anticipated expiration: 2029-08-30

Abstract

The utility model belongs to the technical field of the battery, concretely relates to battery voltage sampling device, including voltage sampling circuit board, battery mount and battery management system, the battery mount is used for fixed battery, voltage sampling circuit board integration has voltage sampling circuit, battery management system passes through voltage sampling circuit board is connected with the battery electricity, battery management system is used for detecting the voltage of battery, voltage sampling circuit board is provided with a plurality of pads and a plurality of sampling terminal, and is a plurality of the pad all through different wires with the sampling terminal electricity is connected. The sampling device is well fixed on the battery, and the voltage sampling circuit board is adopted to replace a plurality of connecting wires, so that the cost is reduced, and the safety coefficient, the sampling precision and the production efficiency are improved.

Description

Battery voltage sampling device

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to battery voltage sampling device.

Background

The lithium battery is used as main power of a new energy industry, and mainly comprises a plurality of lithium batteries which are connected in series and in parallel through a battery bracket to form a battery module so as to meet various power supply requirements. In the production process, in order to ensure that the lithium battery can meet the working requirements, various performance tests need to be carried out on the lithium battery before the lithium battery is put into use, wherein voltage sampling is a very important link.

The existing battery pack voltage sampling device needs to externally connect a plurality of connecting wires with a plurality of batteries for voltage sampling, because the internal space of a battery module is limited, the connecting wires must be gathered together and fixed or gathered in the same wiring groove to be wired to the external interface of the module together, the insulation and temperature resistance of the connecting wires are limited, when the module breaks down and thermal runaway causes high-temperature electrolyte to be sprayed or even fire, the insulation layers of the connecting wires are damaged inevitably, short circuit occurs among the wires, the connecting wires are easy to wind, when sampling is carried out, the connecting wires are electrified to generate heat, heat transfer among the connecting wires can accelerate the damage of the insulation layers of the connecting wires, and the short circuit occurs; simultaneously the position of a plurality of batteries is unfixed, receives the vibration interference easily when the test, and these factors lead to voltage sampling's factor of safety to reduce, have reduced the precision of sampling data simultaneously, and the sampling operation is inconvenient, has reduced production efficiency, is unfavorable for the development of enterprise.

In view of the above, the related art needs to be perfected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the battery voltage sampling device is good in battery fixation, the circuit board is adopted to replace a plurality of connecting wires, the cost is reduced, and meanwhile the safety coefficient, the sampling precision and the production efficiency are improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a battery voltage sampling device, includes voltage sampling circuit board, battery mount and battery management system, the battery mount is used for fixed battery, voltage sampling circuit board integration has voltage sampling circuit, battery management system passes through voltage sampling circuit board is connected with the battery electricity, battery management system is used for detecting the voltage of battery, voltage sampling circuit board is provided with a plurality of pads and a plurality of sampling terminal, and is a plurality of the pad all through different wires with the sampling terminal electricity is connected. In operation, fix a plurality of batteries in the battery mount earlier, then establish the voltage sampling circuit board lid in the battery mount side, pass through the wire one-to-one electricity through welded mode with pad and battery connection piece and be connected, pass through data line and battery management system electricity with a plurality of sampling terminals at last and be connected, with gather voltage information, this sampling device is fixed well to the battery, and adopt the voltage sampling circuit board to replace many connecting wires, the cost is reduced, and the factor of safety has been improved simultaneously, sampling precision and production efficiency.

As a battery voltage sampling device's an improvement, it is a plurality of the pad is spaced evenly distributed each other in voltage sampling circuit board. This design is advantageous to avoid short circuits.

As a battery voltage sampling device's an improvement, it is a plurality of the sampling terminal all through the data line with the battery management system electricity is connected. The structural design is beneficial to acquiring the voltage information of a plurality of batteries through the battery management system.

As an improvement of the battery voltage sampling device of the present invention, the battery holder includes a holder body, and a connecting portion and an accommodating portion provided on the holder body, wherein a plurality of the accommodating portions are distributed in the holder body in an array manner, the connecting portion is surrounded by the accommodating portions, and the accommodating portion includes a first through hole and a clamping plate corresponding to the first through hole; the connecting part comprises a connecting column and a second through hole, the connecting column is arranged on the bracket body, and the second through hole penetrates through the connecting column and the bracket body at the same time. In work, a single battery is placed in the first through hole, the clamping plate resists the battery to prevent the battery from sliding out of the other end of the first through hole, the two support bodies are combined together, and a plurality of single batteries can be clamped simultaneously to assemble a single battery pack; closely lean on a plurality of single group battery together for second through-hole on the different group batteries is coaxial, then runs through a plurality of second through-holes with the screw rod, and with the bolt fastening, thereby has constituteed high-power supply battery, in order to satisfy high-power supply demand, and this battery mount possesses multiple fixed mode, and simple structure, convenient to use, the practicality is strong.

As a battery voltage sampling device's an improvement, the spliced pole with support body integrated into one piece. The structural design is favorable for improving the firmness of connection between the connecting column and the bracket body.

As an improvement of the battery voltage sampling apparatus of the present invention, the cross-sectional shape of the first through-hole is at least one of a semicircular shape, a circular shape, a fan shape, and a polygonal shape. In operation, the first through hole is used for accommodating a single battery; in practical applications, the shape of the single battery has a cylindrical shape or a cubic shape, and the cross-sectional shape of the first through hole is designed according to the cross-sectional shape of the battery for stability of operation, and can be flexibly set according to practical situations.

As an improvement of the battery voltage sampling device of the present invention, it is a plurality of the accommodating portions are distributed in the bracket body in at least one of a linear array, an annular array and a rectangular array. In practical application, the distribution mode of the accommodating parts can be designed into various modes, and the accommodating parts can be flexibly arranged according to working environments.

As a battery voltage sampling device's an improvement, the cardboard set up in the bottom of first through-hole. In operation, the cardboard is used for keeping out the battery in the first through-hole, prevents that the battery in the first through-hole from landing.

As an improvement of the battery voltage sampling apparatus of the present invention, the cross-sectional shape of the clamping plate is at least one of a semi-circular shape, a circular shape and a polygonal shape. In practical application, the shape of cardboard can be designed into diversified, and the quantity of cardboard also can design a plurality ofly, can set up according to actual work condition in a flexible way.

As an improvement of the battery voltage sampling device of the present invention, the number of the connecting portions is at least 2. In practical use, the connection parts are provided at edge regions of the plurality of receiving parts, thereby preventing an influence on the operation of the battery.

As a battery voltage sampling device's an improvement, the support body still is provided with a plurality of baffles and a plurality of third through-hole, and is a plurality of the baffle encloses to be located around the holding portion, the third through-hole sets up in adjacent between the holding portion. The baffle is used for protecting the battery and preventing the battery from being impacted by external force; the battery can produce a large amount of heats at the during operation, and the third through hole is used for the heat dissipation, and material saving is favorable to alleviateing the weight of support body simultaneously.

As a battery voltage sampling device's an improvement, different be provided with card protruding and draw-in groove on the baffle respectively. In actual work, make up two support bodies, the centre gripping has a plurality of batteries, and protruding, the draw-in groove of the card on two support bodies carries out the joint respectively this moment, is favorable to increasing the stability of group battery structure.

As an improvement of the battery voltage sampling apparatus of the present invention, the cross-sectional shape of the third through-hole is at least one of a semicircular shape, a circular shape, a fan shape, and a polygonal shape. In practical application, the shape of the third through hole can be designed to be various, and the third through hole can be flexibly arranged according to practical situations.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic three-dimensional structure diagram in an embodiment of the present invention;

fig. 2 is a schematic structural view of the battery holder according to the embodiment of the present invention when the battery is fixed;

fig. 3 is a schematic three-dimensional structure view of a battery holder according to an embodiment of the present invention;

FIG. 4 is a schematic top view of the structure of FIG. 3;

fig. 5 is a schematic structural diagram of a circuit connection according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of circuit connection of the voltage sampling circuit board in the embodiment of the present invention;

fig. 7 is a schematic circuit diagram of the voltage sampling circuit board in the embodiment of the present invention during operation;

wherein: 1-a voltage sampling circuit board; 11-a pad; 12-a sampling terminal; 2-a battery holder; 21-a stent body; 22-a connecting part; 221-connecting column; 222-a second via; 23-a locus of containment; 231 — a first via; 232-card board; 24-a baffle; 241-convex block; 242-card slot; 25-a third via; 3-a battery management system; 4-single cell.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.

Examples

As shown in fig. 1-7, a battery voltage sampling device includes a voltage sampling circuit board 1, a battery holder 2 and a battery management system 3, wherein the battery holder 2 is used for fixing a battery, the voltage sampling circuit board 1 is integrated with a voltage sampling circuit, the battery management system 3 is electrically connected to the battery through the voltage sampling circuit board 1, the battery management system 3 is used for detecting the voltage of the battery, the voltage sampling circuit board 1 is provided with a plurality of bonding pads 11 and a plurality of sampling terminals 12, and the plurality of bonding pads 11 are electrically connected to the sampling terminals 12 through different wires. In operation, fix a plurality of batteries 4 in battery mount 2 earlier, then establish 2 sides in battery mount with voltage sampling circuit board 1 lid, pass through the wire one-to-one electricity through welded mode with pad 11 and battery connection piece and be connected, pass through data line and battery management system 3 electricity with a plurality of sampling terminals 12 at last, with gather voltage information, this sampling device is fixed well to the battery, and adopt voltage sampling circuit board to replace many connecting wires, the cost is reduced, the factor of safety has been improved simultaneously, sampling precision and production efficiency.

Preferably, the plurality of pads 11 are spaced apart from each other and uniformly distributed on the voltage sampling circuit board 1. This design is advantageous to avoid short circuits.

Preferably, each of the plurality of sampling terminals 12 is electrically connected to the battery management system 3 through a data line. The structural design is beneficial to acquiring the voltage information of a plurality of batteries through the battery management system.

Preferably, the battery holder 2 includes a holder body 21, and a connecting portion 22 and a receiving portion 23 disposed on the holder body 21, the plurality of receiving portions 23 are distributed in the holder body 21 in an array, the connecting portion 22 surrounds the plurality of receiving portions 23, and the receiving portion 23 includes a first through hole 231 and a clamping plate 232 corresponding to the first through hole 231; the connecting portion 22 includes a connecting column 221 and a second through hole 222, the connecting column 221 is disposed on the bracket body 21, and the second through hole 222 penetrates through the connecting column 221 and the bracket body 21. In operation, a single battery 4 is placed in the first through hole 231, the clamping plate 232 resists the battery, the battery is prevented from sliding out from the other end of the first through hole 231, the two bracket bodies 21 are combined together, and a plurality of single batteries 4 can be clamped at the same time, so that a single battery 4 group is assembled; closely lean on together a plurality of single battery 4 groups for second through-hole 222 on the different group battery is coaxial, then runs through a plurality of second through-holes 222 with the screw rod, and with the bolt fastening, thereby constituted high-power supply battery, with satisfying high-power supply demand, this support possesses multiple fixed mode, and simple structure, convenient to use, the practicality is strong.

Preferably, the connecting column 221 is integrally formed with the bracket body 21. This design is beneficial to increase the connection firmness between the connection column 221 and the bracket body 21.

Preferably, the cross-sectional shape of the first through-hole 231 is at least one of semicircular, circular, fan-shaped, and polygonal. In operation, the first through hole 231 is used to accommodate a single battery 4; in practical applications, the shape of the single battery 4 has a cylindrical or cubic shape, and the cross-sectional shape of the first through hole 231 is designed according to the cross-sectional shape of the battery for stability of operation, and can be flexibly set according to practical situations.

Preferably, the plurality of receptacles 23 are distributed in the stent body 21 in at least one of a linear array, an annular array, and a rectangular array. In practical applications, the distribution of the receiving portions 23 may be designed in various ways, and the arrangement may be flexibly performed according to the working environment.

Preferably, the chucking plate 232 is disposed at the bottom of the first through hole 231. In operation, the clamping plate 232 is used to block the batteries in the first through hole 231 and prevent the batteries in the first through hole 231 from sliding out.

Preferably, the chucking plate 232 has a cross-sectional shape of at least one of a semicircle, a circle, and a polygon. In practical application, the shape of cardboard 232 can be designed into a great variety, and the quantity of cardboard 232 also can design a plurality ofly, can set up according to actual work condition in a flexible way.

Preferably, the number of the connection portions 22 is at least 2. In practical applications, the connection parts 22 are disposed at edge regions of the plurality of receiving parts 23, thereby avoiding an influence on the operation of the battery.

Preferably, the bracket body 21 is further provided with a plurality of baffles 24 and a plurality of third through holes 25, the plurality of baffles 24 are arranged around the accommodating portions 23, and the third through holes 25 are arranged between adjacent accommodating portions 23. The baffle 24 is used for protecting the battery and preventing the battery from being impacted by external force; the battery can generate a large amount of heat during operation, the third through hole 25 is used for heat dissipation, and meanwhile, materials are saved, so that the weight of the support body 21 is favorably reduced.

Preferably, the different blocking plates 24 are respectively provided with a locking protrusion 241 and a locking groove 242. In actual work, two support bodies 21 are combined, a plurality of batteries are clamped in the middle, the clamping protrusions 241 and the clamping grooves 242 on the two support bodies 21 are clamped respectively, and the stability of the battery pack structure is improved.

Preferably, the cross-sectional shape of the third through-hole 25 is at least one of semicircular, circular, fan-shaped, and polygonal. In practical applications, the shape of the third through hole 25 can be designed to be various, and can be flexibly set according to practical situations.

The utility model discloses a theory of operation is: in operation, a single battery 4 is placed in the first through hole 231, the clamping plate 232 supports the battery to prevent the battery from sliding out of the other end of the first through hole 231, the two bracket bodies 21 are combined together, the clamping protrusions 241 and the clamping grooves 242 on the two bracket bodies 21 are clamped respectively, so that the stability of the battery pack structure is improved, and a plurality of single batteries 4 can be clamped simultaneously to assemble a single battery 4 group; the multiple single batteries 4 are closely abutted together, so that the second through holes 222 on different battery packs are coaxial, then the second through holes 222 are penetrated through by screws and fixed by bolts, and thus the high-power supply battery is formed to meet the high-power supply requirement, and the baffle 24 is used for protecting the batteries and avoiding the batteries from being impacted by external force; the battery can generate a large amount of heat during working, the third through hole 25 is used for heat dissipation, materials are saved, the weight of the support body 21 is favorably reduced, the support has multiple fixing modes, and the support is simple in structure, convenient to use and high in practicability; in operation, fix a plurality of batteries in battery mount 2 earlier, then establish 2 sides in battery mount with voltage sampling circuit board 1 lid, pass through the wire one-to-one electricity through welded mode with pad 11 and battery connection piece and be connected, pass through data line and battery management system 3 electricity with a plurality of sampling terminals 12 at last, with gather voltage information, this sampling device is fixed well to the battery, and adopt voltage sampling circuit board to replace many connecting wires, the cost is reduced, the factor of safety has been improved simultaneously, sampling precision and production efficiency.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A battery voltage sampling device, characterized in that: including voltage sampling circuit board (1), battery mount (2) and battery management system (3), battery mount (2) are used for fixed battery, voltage sampling circuit board (1) is integrated with voltage sampling circuit, battery management system (3) pass through voltage sampling circuit board (1) is connected with the battery electricity, battery management system (3) are used for detecting the voltage of battery, voltage sampling circuit board (1) is provided with a plurality of pads (11) and a plurality of sampling terminal (12), and is a plurality of pad (11) all through different wires with sampling terminal (12) electricity is connected.

2. The battery voltage sampling apparatus of claim 1, wherein: the pads (11) are spaced from each other and uniformly distributed on the voltage sampling circuit board (1).

3. The battery voltage sampling apparatus of claim 1, wherein: the plurality of sampling terminals (12) are electrically connected with the battery management system (3) through data lines.

4. The battery voltage sampling apparatus of claim 1, wherein: the battery fixing frame (2) comprises a support body (21), and a connecting part (22) and an accommodating part (23) which are arranged on the support body (21), wherein the accommodating parts (23) are distributed on the support body (21) in an array manner, the connecting part (22) surrounds the accommodating parts (23), and each accommodating part (23) comprises a first through hole (231) and a clamping plate (232) corresponding to the first through hole (231); the connecting part (22) comprises a connecting column (221) and a second through hole (222), the connecting column (221) is arranged on the bracket body (21), and the second through hole (222) penetrates through the connecting column (221) and the bracket body (21) at the same time.

5. The battery voltage sampling apparatus of claim 4, wherein: the connecting column (221) and the bracket body (21) are integrally formed.

6. The battery voltage sampling apparatus of claim 4, wherein: the plurality of receptacles (23) are distributed in the stent body (21) in at least one of a linear array, an annular array, and a rectangular array.

7. The battery voltage sampling apparatus of claim 4, wherein: the clamping plate (232) is arranged at the bottom of the first through hole (231).

8. The battery voltage sampling apparatus of claim 4, wherein: the support body (21) is further provided with a plurality of baffles (24) and a plurality of third through holes (25), the baffles (24) are arranged around the containing part (23), and the third through holes (25) are arranged between the adjacent containing parts (23).

9. The battery voltage sampling apparatus of claim 8, wherein: different baffles (24) are respectively provided with a clamping protrusion (241) and a clamping groove (242).