Battery pack

Abstract

The utility model discloses a battery pack which comprises a first connecting piece, a resistor, a first lead and a plurality of batteries, the plurality of batteries are arranged side by side, and the batteries at the two ends of the plurality of batteries are a first end part battery and a second end part battery respectively; a first gap is formed between the first end battery and the adjacent battery; the first connecting sheet is arranged on an electrode of the first end battery; the resistor is arranged in the first gap, a first lead is arranged on the resistor, and the first lead is electrically connected with the first connecting sheet; the first wire is electrically connected with the first connecting sheet. According to the battery pack, the first connecting piece is arranged at the end part of the first end part battery, and enough space is provided for welding the first lead and the first lead, so that the risk of breakage of the first lead and / or the first lead can be reduced, and the safety of the battery pack is improved. Even if the battery is an AAA battery (No.7 battery), the resistor can be completely accommodated in the first gap, and the size and the appearance of the battery pack are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack. Background Art

[0002] As a commonly used energy storage and supply component, the battery is applied in various electronic devices. During the charging and discharging process of the battery, the temperature of the battery will rise. If the battery temperature is too high, accidents such as short circuit and fire will occur. Therefore, in order to ensure the safety of the battery, it is necessary to detect the temperature of the battery during charging and discharging in real time. When the battery temperature is detected to be too high, the battery is turned off in time. In the prior art, a thermistor is usually used to detect the temperature of the battery in real time, and the thermistor needs to be electrically connected to a controller outside the battery through a lead wire.

[0003] As Figure 1 、 Figure 2 shown, the thermistor 110 is usually arranged on the side of the battery assembly, in the groove 121 between two adjacent batteries 120; the connecting piece 130 on the electrode of the battery 120 is bent and extended into the groove 121, and is welded to the wire 140 and the lead 111 of the thermistor 110. In actual application, due to the limited width of the groove 121, the width of the connecting piece 130 is limited, resulting in that the wire 140 and the lead 111 cannot be welded in parallel. The copper core of the wire 140 or the lead 111 can only be reluctantly welded to the connecting piece 130 after being tilted, and the welding is not tight and is easy to break under external force. Moreover, when the single battery is an AAA battery (No. 7 battery), due to the thinness of the single battery and the small width of the groove 121, the wire 140, the thermistor 110 and the connecting piece 130 cannot be completely accommodated in the groove 121, resulting in the protrusion of the side surface of the battery assembly, affecting the size and appearance of the battery assembly. Summary of the Utility Model

[0004] The embodiment of the utility model provides a battery pack to solve the problems that the wire or lead in the battery pack is easy to break and the side surface protrudes, and achieve the effects of improving the safety and beauty of the battery pack.

[0005] Specifically, the utility model provides a battery pack, including:

[0006] A plurality of batteries, which are arranged side by side and connected in series, and the batteries at both ends of the plurality of batteries are respectively a first end battery and a second end battery; a first gap is formed between the first end battery and the adjacent battery;

[0007] A first connecting piece, which is arranged on the electrode of the first end battery, and the projection of the first connecting piece on the battery completely lies on the electrode of the battery;

[0008] A resistor, the resistor is disposed within the first gap, a first lead is provided on the resistor, and the first lead is electrically connected to the first connection piece;

[0009] A first wire, the first wire is electrically connected to the first connection piece.

[0010] Optionally, an end of the first wire connected to the first connection piece and an end of the first lead connected to the first connection piece are arranged in parallel; an end of the first wire connected to the first connection piece is perpendicular to the extending direction of the first connection piece.

[0011] Optionally, the battery pack further includes a first shrink tube, and the first shrink tube is sleeved on the first wire and an end of the first lead close to the first connection piece.

[0012] Optionally, the battery pack further includes a housing, and the housing is sleeved on the battery; the first connection piece and the resistor are both located within the housing;

[0013] The housing has an opening at one end of the second end battery, and the first wire extends from the first end battery towards the second end battery and extends out of the housing through the opening.

[0014] Optionally, a second gap is formed between the second end battery and an adjacent battery, a second connection piece is connected to an electrode at an end of the second end battery away from the opening, and one end of the second connection piece extends into the second gap;

[0015] The battery pack further includes a second wire, and the second wire is electrically connected to the second connection piece.

[0016] Optionally, the second wire extends to an end of the second end battery close to the opening and extends out of the housing through the opening.

[0017] Optionally, one end of the second connection piece located in the second gap is on the same side of the batteries where the resistor is arranged in parallel;

[0018] Or, one end of the second connection piece located in the second gap is on two sides of the batteries where the resistor is arranged in parallel.

[0019] Optionally, a second lead is further provided on the resistor, and the second lead extends within the first gap; the second lead is electrically connected to a third wire, and the third wire extends from the first end battery towards the second end battery and extends out of the housing at the position of the second end battery.

[0020] Optionally, the first wire, the second wire, and the third wire are arranged side by side at the end of the battery.

[0021] Optionally, the battery pack further includes a third connecting piece for connecting the electrodes of two adjacent batteries to connect a plurality of the batteries in series.

[0022] The beneficial effects of the present utility model are as follows:

[0023] In the battery pack provided by the present utility model, by arranging the first connecting piece at the end of the battery at the first end, there is sufficient space for welding the first lead and the first wire, so that it is possible to avoid loose welding of the first lead and / or the first wire, reduce the risk of breakage of the first lead and / or the first wire, and improve the safety of the battery pack. At the same time, since the first connecting piece no longer extends into the first gap, the first wire does not need to extend into the first gap either, and the first gap is only used to accommodate the resistor; even when the battery is an AAA battery (No. 7 battery), the resistor can be completely accommodated in the first gap without affecting the size and appearance of the battery pack. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0025] Figure 1 is a schematic structural diagram of a battery pack in the prior art;

[0026] Figure 2 is a schematic structural diagram of a battery pack in the prior art;

[0027] Figure 3 is a schematic structural diagram of a battery pack in an embodiment of the present utility model;

[0028] Figure 4 is a schematic cross-sectional view of a battery pack in an embodiment of the present utility model;

[0029] Figure 5 is a schematic partial cross-sectional view of a battery pack in an embodiment of the present utility model.

[0030] In the figure: 110, thermistor; 111, lead; 120, battery; 121, groove; 130, connecting piece; 140, wire.

[0031] 200. Battery, 210. First end battery, 220. Second end battery, 230. First gap, 240. Second gap, 310. First connecting piece, 320. Second connecting piece, 330. Third connecting piece, 400. Resistor, 410. First lead wire, 420. Second lead wire, 510. First wire, 520. Second wire, 530. Third wire, 610. First shrink tube, 620. Second shrink tube, 630. Third shrink tube, 700. Outer shell. Detailed implementation mode

[0032] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] Figure 3 is a schematic structural diagram of a battery pack in an embodiment of the present utility model, as Figure 3 shown, and with reference to Figures 4 to 5, an embodiment of the present utility model provides a battery pack, which includes a first connecting piece 310, a resistor 400, a first wire 510 and a plurality of batteries 200. The plurality of batteries 200 are arranged side by side and connected in series, and the batteries 200 located at both ends are a first end battery 210 and a second end battery 220 respectively; a first gap 230 is formed between the first end battery 210 and the adjacent battery 200; the first connecting piece 310 is disposed on the electrode at one end of the first end battery 210, and the projection of the first connecting piece 310 on the battery 200 completely lies on the electrode of the battery 200; the resistor 400 is disposed in the first gap 230, and a first lead 410 is provided on the resistor 400, and the first lead 410 is electrically connected to the first connecting piece 310; the first wire 510 is electrically connected to the first connecting piece 310.

[0036] In the embodiment of the present utility model, by disposing the first connecting piece 310 on the end of the first end battery 210, there is enough space for welding the first lead 410 and the first wire 510. Therefore, it is possible to avoid poor welding of the first lead 410 and / or the first wire 510, reduce the risk of breakage of the first lead 410 and / or the first wire 510, and improve the safety of the battery pack. At the same time, since the first connecting piece 310 no longer extends into the first gap 230, the first wire 510 does not need to extend into the first gap 230 either. The first gap 230 is only used to accommodate the resistor 400; even when the battery 200 is an AAA battery 200 (No. 7 battery 200), the resistor 400 can be completely accommodated in the first gap 230 without affecting the size and appearance of the battery pack.

[0037] Specifically, the resistor 400 is an NTC thermistor, and realizes the functions of temperature measurement, temperature compensation or temperature control component after being electrically connected to the battery 200.

[0038] In an embodiment of the present utility model, the end of the first wire 510 connected to the first connecting piece 310 and the end of the first lead 410 connected to the first connecting piece 310 are arranged in parallel; the end of the first wire 510 connected to the first connecting piece 310 is perpendicular to the extending direction of the first connecting piece 310.

[0039] With such a setting, the first lead 410 and the first wire 510 are arranged side by side and perpendicularly connected to the first connecting piece 310, avoiding the generation of an oblique angle and internal stress between the first lead 410 and the first wire 510. Therefore, the risk of breakage of the first lead 410 and / or the first wire 510 can be reduced, and the safety of the battery pack can be improved.

[0040] Further, the battery pack further includes a first shrink tube 610 sleeved on one end of the first wire 510 and the first lead 410 close to the first connection piece 310. Since no oblique angle is formed between the first lead 410 and the first wire 510, the first shrink tube 610 can fully wrap the first wire 510 and the first lead 410, making them less susceptible to external forces and improving the structural stability. Also, the first shrink tube 610 provides insulation protection for the first lead 410 and the first wire 510, reducing the risk of short circuit.

[0041] In an embodiment of the present invention, the battery pack further includes a housing 700 sleeved on the battery 200; the housing 700 is a shrink film which forms the housing 700 after heat shrinkage when sleeved on the battery 200; the first connection piece 310 and the resistor 400 are both located inside the housing 700. The housing 700 has an opening at one end of the second-end battery 220, and the first wire 510 extends from the first-end battery 210 to the second-end battery 220 and extends out of the housing 700 through the opening. Since the first wire 510 extends from the first-end battery 210 to the second-end battery 220 and extends out of the housing 700 through the opening at the second-end battery 220, the housing 700 can wrap a section of the first wire 510, effectively preventing the first wire 510 from moving or falling off the battery 200 and ensuring the stability of the electrical connection.

[0042] As Figure 4 shown, in an embodiment of the present invention, a second gap 240 is formed between the second-end battery 220 and the adjacent battery 200, a second connection piece 320 is connected to the electrode at one end of the second-end battery 220 away from the opening, and one end of the second connection piece 320 extends into the second gap 240. The battery pack further includes a second wire 520 and a second shrink tube 620, and the second wire 520 is electrically connected to the second connection piece 320. The second shrink tube 620 is sleeved at the connection position of the second wire 520 and the second connection piece 320, thereby providing insulation protection for the second wire 520 and the second connection piece 320 and reducing the risk of short circuit.

[0043] Further, the second wire 520 extends to one end of the second end battery 220 near the opening and extends out of the housing 700 through the opening. Since the second connecting piece 320 and the first connecting piece 310 are arranged at intervals in the axial direction of the battery 200, the second wire 520 extends to the opening position in the second gap 240 and extends out. On the one hand, the second wire 520 is bent at one end of the second end battery 220 near the opening and then extends out of the housing 700, increasing the difficulty of movement or detachment of the second wire 520 and improving the stability of the electrical connection of the second wire 520; on the other hand, the second wire 520 and the first wire 510 extend out of the housing 700 at the same position, which can avoid wire chaos and facilitate wire arrangement applications.

[0044] As Figure 3 , Figure 5 shown, in an embodiment of the present invention, the second connecting piece 320 is located on one end of the second gap 240 and on the same side of the batteries 200 arranged side by side as the resistor 400. Alternatively, the second connecting piece 320 is located on one end of the second gap 240 and on both sides of the batteries 200 arranged side by side as the resistor 400.

[0045] In an embodiment of the present invention, a second lead 420 is further provided on the resistor 400, and the second lead 420 extends in the first gap 230; the second lead 420 is electrically connected to a third wire 530, and the third wire 530 extends from the first end battery 210 to the second end battery 220 and extends out of the housing 700 at the position of the second end battery 220. A third shrink tube 630 is sleeved at the connection position of the second lead 420 and the third wire 530 to provide insulation protection for the second lead 420 and the third wire 530 and reduce the risk of short circuit.

[0046] In an embodiment of the present invention, the first wire 510, the second wire 520 and the third wire 530 are arranged side by side at the end of the battery 200 to improve the neatness of wire arrangement and avoid affecting the size and appearance of the battery pack.

[0047] In an embodiment of the present invention, the battery pack further includes a third connecting piece 330, and the third connecting piece 330 is used to connect the electrodes of two adjacent batteries 200 so that a plurality of batteries 200 are connected in series.

[0048] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A battery pack, characterized in that, Comprising: A plurality of batteries (200), which are arranged side by side and connected in series among the plurality of batteries (200), and the batteries (200) located at both ends are a first end battery (210) and a second end battery (220) respectively; a first gap (230) is formed between the first end battery (210) and the adjacent battery (200); A first connecting piece (310), which is arranged on the electrode of the first end battery (210), and the projection of the first connecting piece (310) on the battery (200) is completely located on the electrode of the battery (200); A resistor (400), which is arranged in the first gap (230), a first lead (410) is provided on the resistor (400), and the first lead (410) is electrically connected to the first connecting piece (310); A first wire (510), which is electrically connected to the first connecting piece (310).

2. The battery pack according to claim 1, wherein The end of the first wire (510) connected to the first connecting piece (310) and the end of the first lead (410) connected to the first connecting piece (310) are arranged in parallel; the end of the first wire (510) connected to the first connecting piece (310) is perpendicular to the extending direction of the first connecting piece (310).

3. The battery pack according to claim 2, wherein The battery pack further includes a first shrink tube (610), and the first shrink tube (610) is sleeved on one end of the first wire (510) and the first lead (410) close to the first connecting piece (310).

4. The battery pack according to claim 1, wherein The battery pack further includes a housing (700), and the housing (700) is sleeved on the battery (200); the first connecting piece (310) and the resistor (400) are both located inside the housing (700); The housing (700) has an opening at one end of the second end battery (220), and the first wire (510) extends along the first end battery (210) towards the second end battery (220) and extends out of the housing (700) through the opening.

5. The battery pack according to claim 4, wherein A second gap (240) is formed between the second end battery (220) and the adjacent battery (200), a second connecting piece (320) is connected to the electrode at the end of the second end battery (220) away from the opening, and one end of the second connecting piece (320) extends into the second gap (240); The battery pack further includes a second wire (520), and the second wire (520) is electrically connected to the second connecting piece (320).

6. The battery pack according to claim 5, wherein The second wire (520) extends to one end of the second end battery (220) near the opening and extends out of the housing (700) through the opening.

7. The battery pack according to claim 5, wherein the second connecting piece (320) is located at one end of the second gap (240) and on the same side of the batteries (200) arranged side by side as the resistor (400); alternatively, the second connecting piece (320) is located at one end of the second gap (240) and on both sides of the batteries (200) arranged side by side as the resistor (400).

8. The battery pack according to claim 5, wherein a second lead (420) is further provided on the resistor (400), and the second lead (420) extends in the first gap (230); the second lead (420) is electrically connected to a third wire (530), and the third wire (530) extends along the first end battery (210) towards the second end battery (220) and extends out of the housing (700) at the position of the second end battery (220).

9. The battery pack according to claim 8, wherein the first wire (510), the second wire (520) and the third wire (530) are arranged side by side at the end of the battery (200).

10. The battery pack according to claim 1, wherein the battery pack further includes a third connecting piece (330), and the third connecting piece (330) is used to connect the electrodes of two adjacent batteries (200) so that a plurality of the batteries (200) are connected in series.

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